Adding upstream version 5.2.15.upstream/5.2.15upstream

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

32 files changed, 19570 insertions, 0 deletions

diff --git a/support/Makefile.in b/support/Makefile.in
new file mode 100644
index 0000000..f7de7ac
--- /dev/null
+++ b/support/Makefile.in
@@ -0,0 +1,90 @@
+#
+# Simple Makefile for the support programs.
+#
+# documentation support: man2html
+# testing support: printenv recho zecho xcase
+#
+# bashbug.sh lives here (created by configure), but bashbug is created by
+# the top-level makefile
+#
+# Currently only man2html is built
+#
+# Copyright (C) 1998-2021 Free Software Foundation, Inc.
+
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#
+# Boilerplate
+#
+topdir = @top_srcdir@
+srcdir = @srcdir@
+VPATH = @srcdir@
+BUILD_DIR = @BUILD_DIR@
+
+RM	= rm -f
+SHELL	= @MAKE_SHELL@
+CC = @CC@
+CC_FOR_BUILD = @CC_FOR_BUILD@
+
+EXEEXT = @EXEEXT@
+
+#
+# Compiler options:
+#
+PROFILE_FLAGS = @PROFILE_FLAGS@
+
+CFLAGS = @CFLAGS@
+CFLAGS_FOR_BUILD = @CFLAGS_FOR_BUILD@
+BASE_CFLAGS_FOR_BUILD = @BASE_CFLAGS_FOR_BUILD@
+CPPFLAGS = @CPPFLAGS@
+CPPFLAGS_FOR_BUILD = @CPPFLAGS_FOR_BUILD@
+LOCAL_CFLAGS = @LOCAL_CFLAGS@
+STYLE_CFLAGS = @STYLE_CFLAGS@
+DEFS = @DEFS@
+LOCAL_DEFS = @LOCAL_DEFS@
+
+LIBS = @LIBS@
+LIBS_FOR_BUILD = ${LIBS}		# XXX
+
+LOCAL_LDFLAGS = @LOCAL_LDFLAGS@
+LDFLAGS = @LDFLAGS@ $(LOCAL_LDFLAGS)
+LDFLAGS_FOR_BUILD = @LDFLAGS_FOR_BUILD@ $(LOCAL_LDFLAGS) $(CFLAGS_FOR_BUILD)
+
+INCLUDES = -I${BUILD_DIR} -I${topdir}
+
+BASE_CCFLAGS = ${PROFILE_FLAGS} $(DEFS) $(LOCAL_DEFS) $(SYSTEM_FLAGS) \
+	  ${INCLUDES} $(STYLE_CFLAGS) $(LOCAL_CFLAGS)
+
+CCFLAGS = $(BASE_CCFLAGS) $(CPPFLAGS) $(CFLAGS)
+CCFLAGS_FOR_BUILD = $(BASE_CCFLAGS) $(CPPFLAGS_FOR_BUILD) $(CFLAGS_FOR_BUILD)
+
+SRC1 =	man2html.c
+OBJ1 =	man2html.o
+
+.c.o:
+	$(RM) $@
+	$(CC_FOR_BUILD) -c $(CCFLAGS_FOR_BUILD) $<
+
+all: man2html$(EXEEXT)
+
+man2html$(EXEEXT): $(OBJ1)
+	$(CC_FOR_BUILD) $(LDFLAGS_FOR_BUILD) $(OBJ1) -o $@ ${LIBS_FOR_BUILD}
+
+clean:
+	$(RM) man2html$(EXEEXT) $(OBJ1)
+
+distclean maintainer-clean mostlyclean: clean
+	$(RM) bash.pc bashbug.sh
+
+man2html.o: man2html.c
diff --git a/support/SYMLINKS b/support/SYMLINKS
new file mode 100644
index 0000000..06bbed7
--- /dev/null
+++ b/support/SYMLINKS
@@ -0,0 +1,18 @@
+#
+# symlink map for bash source tree
+#
+#	link name		link target
+#
+lib/readline/tilde.c		../tilde/tilde.c
+lib/readline/tilde.h		../tilde/tilde.h
+#
+lib/readline/ansi_stdlib.h	../../include/ansi_stdlib.h
+lib/readline/posixdir.h		../../include/posixdir.h
+lib/readline/posixjmp.h		../../include/posixjmp.h
+lib/readline/posixselect.h	../../include/posixselect.h
+lib/readline/posixstat.h	../../include/posixstat.h
+#lib/readline/rlstdc.h		../../include/stdc.h
+#lib/readline/xmalloc.c		../malloc/xmalloc.c
+#
+#lib/tilde/memalloc.h		../../include/memalloc.h
+#
diff --git a/support/bash.pc.in b/support/bash.pc.in
new file mode 100644
index 0000000..6009659
--- /dev/null
+++ b/support/bash.pc.in
@@ -0,0 +1,28 @@
+# bash.pc.in
+
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+includedir=@includedir@
+libdir=@libdir@
+
+loadablesdir=@loadablesdir@
+headersdir=${includedir}/@PACKAGE_NAME@
+
+LOCAL_CFLAGS = @LOCAL_CFLAGS@
+LOCAL_DEFS = @LOCAL_DEFS@
+CCFLAGS = ${LOCAL_DEFS} ${LOCAL_CFLAGS}
+
+CC = @CC@
+SHOBJ_CC = @SHOBJ_CC@
+SHOBJ_CFLAGS = @SHOBJ_CFLAGS@
+SHOBJ_LD = @SHOBJ_LD@
+SHOBJ_LDFLAGS = @SHOBJ_LDFLAGS@
+SHOBJ_XLDFLAGS = @SHOBJ_XLDFLAGS@
+SHOBJ_LIBS = @SHOBJ_LIBS@
+
+Name: @PACKAGE_NAME@
+Description: Bash headers for bash loadable builtins
+Version: @PACKAGE_VERSION@
+Url: @PACKAGE_URL@
+Libs: ${SHOBJ_LIBS}
+Cflags: ${SHOBJ_CFLAGS} ${CCFLAGS} -I${headersdir} -I${headersdir}/builtins -I${headersdir}/include
diff --git a/support/bash.xbm b/support/bash.xbm
new file mode 100644
index 0000000..14bbe6a
--- /dev/null
+++ b/support/bash.xbm
@@ -0,0 +1,60 @@
+From: Simon Marshall <sm2@sequent.cc.hull.ac.uk>
+Date: Wed, 8 May 91 17:15:58 +0100
+To: bug-bash@ai.mit.edu
+Subject: X bitmap for bash
+
+        Since other GNU software comes with its very own X bitmap, I
+     thought it was about time bash had one too & here it is!  To use,
+     stick the stuff after my signature in a file <path>/bash.xbm.  If
+     using a twm window manager, insert the lines:
+
+IconDirectory           "<path>"
+Icons {
+        "<xterm title>" "bash.xbm"
+}
+        in your ~/.twmrc file.  The <xterm title> can be a prefix, so if
+     you have titles "bash@machine", the prefix "bash" will do.  I'm not
+     familiar enough with other window managers, but they should be
+     similar.
+
+        If you like it, you're welcome to it...
+
+        Simon.
+
+Copyright (C) 1992 Simon Marshall
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#define bash_width 64
+#define bash_height 48
+static char bash_bits[] = {
+   0x00, 0x60, 0x06, 0x30, 0x04, 0x00, 0x00, 0x00, 0x60, 0x98, 0x01, 0x40,
+   0x03, 0x00, 0x00, 0x00, 0x19, 0x00, 0xa0, 0x80, 0x80, 0xff, 0x00, 0x00,
+   0x06, 0x00, 0x1c, 0x03, 0xe1, 0x5f, 0x03, 0x00, 0x02, 0x00, 0x22, 0x0c,
+   0x5d, 0xf4, 0x0e, 0x00, 0xe1, 0x02, 0x09, 0x19, 0x17, 0x91, 0x3d, 0x00,
+   0xf8, 0x87, 0x40, 0x90, 0x88, 0x88, 0x6e, 0x00, 0x8e, 0x9b, 0x04, 0x62,
+   0x22, 0x22, 0xd6, 0x00, 0x02, 0xee, 0x4c, 0x68, 0x44, 0x44, 0x6c, 0x01,
+   0x02, 0xf8, 0xa1, 0x4a, 0x11, 0x11, 0xb1, 0x02, 0x05, 0xa0, 0x22, 0xe0,
+   0x88, 0x88, 0x68, 0x03, 0x42, 0x50, 0x5d, 0x40, 0x22, 0x22, 0xa2, 0x05,
+   0x11, 0x81, 0x00, 0x44, 0x44, 0x44, 0x44, 0x07, 0x02, 0x20, 0x84, 0x60,
+   0x11, 0x11, 0xd1, 0x0d, 0x02, 0x0a, 0x02, 0xc0, 0x88, 0x88, 0x48, 0x0b,
+   0x44, 0x40, 0x00, 0x42, 0x22, 0x22, 0xa2, 0x1d, 0x24, 0x08, 0x02, 0x64,
+   0x44, 0x44, 0xc4, 0x1a, 0x08, 0x00, 0x20, 0x20, 0x11, 0x11, 0x91, 0x15,
+   0x88, 0x00, 0x00, 0xe1, 0xff, 0xff, 0xff, 0x1a, 0x10, 0x08, 0x22, 0x10,
+   0x00, 0x00, 0xc0, 0x15, 0x31, 0x40, 0x00, 0xf2, 0x03, 0xc0, 0xc1, 0x1a,
+   0x41, 0x24, 0x48, 0x6c, 0x06, 0x80, 0xc1, 0x15, 0x82, 0x01, 0x00, 0x66,
+   0x06, 0x80, 0xc1, 0x1a, 0x04, 0x22, 0x12, 0x67, 0x06, 0x80, 0xc1, 0x15,
+   0x0a, 0x04, 0xe0, 0x66, 0xe6, 0xb8, 0xc7, 0x1a, 0x09, 0xf0, 0x17, 0xee,
+   0xb3, 0xa5, 0xcf, 0x15, 0x30, 0x00, 0x00, 0x6e, 0x86, 0x8d, 0xcd, 0x1a,
+   0x00, 0x01, 0x80, 0x67, 0xe6, 0xbd, 0xcd, 0x15, 0x00, 0x46, 0x40, 0x66,
+   0xb6, 0xb1, 0xcd, 0x1a, 0x00, 0x38, 0x3c, 0x66, 0xb6, 0xa5, 0xcd, 0x15,
+   0x00, 0x00, 0x02, 0xf6, 0xe3, 0x9d, 0xdd, 0x1a, 0x00, 0x04, 0x60, 0x06,
+   0x00, 0x00, 0xc0, 0x15, 0x00, 0x04, 0x40, 0xfe, 0xff, 0xff, 0xff, 0x1a,
+   0x00, 0x02, 0x80, 0x12, 0x11, 0x11, 0x91, 0x15, 0x00, 0x00, 0x00, 0x8a,
+   0x88, 0x88, 0x88, 0x1a, 0x00, 0x00, 0x00, 0x22, 0x22, 0x22, 0xa2, 0x15,
+   0x00, 0x00, 0x00, 0x46, 0x44, 0x44, 0xc4, 0x9a, 0x00, 0x00, 0x00, 0x12,
+   0x11, 0x11, 0x91, 0xb5, 0x00, 0x00, 0x10, 0x8a, 0x88, 0x88, 0x88, 0xba,
+   0x00, 0x00, 0x10, 0x22, 0x22, 0x22, 0xa2, 0xd5, 0x00, 0x00, 0x30, 0xc6,
+   0x44, 0x44, 0xcc, 0xdf, 0x00, 0x20, 0x39, 0x96, 0x15, 0x51, 0x99, 0xf5,
+   0x80, 0xf2, 0x56, 0x8b, 0x9a, 0xea, 0x9b, 0xff, 0xc1, 0xad, 0x5e, 0xaf,
+   0xbb, 0xfa, 0xba, 0xdf, 0x22, 0x9b, 0xae, 0xd7, 0x54, 0x5d, 0xd7, 0xbf,
+   0x3b, 0x32, 0xce, 0xff, 0xff, 0xff, 0xff, 0xab, 0xae, 0x2b, 0x59, 0xaf,
+   0xd4, 0xae, 0x2e, 0xc3, 0xdd, 0x43, 0xa9, 0xd1, 0xba, 0xae, 0x2c, 0xcd};
diff --git a/support/bashbug.sh b/support/bashbug.sh
new file mode 100644
index 0000000..940f706
--- /dev/null
+++ b/support/bashbug.sh
@@ -0,0 +1,274 @@
+#!/bin/sh -
+#
+# bashbug - create a bug report and mail it to the bug address
+#
+# The bug address depends on the release status of the shell.  Versions
+# with status `devel', `alpha', `beta', or `rc' mail bug reports to
+# chet@cwru.edu and, optionally, to bash-testers@cwru.edu.
+# Other versions send mail to bug-bash@gnu.org.
+#
+# Copyright (C) 1996-2021 Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#
+# configuration section:
+#	these variables are filled in by the make target in Makefile
+#
+MACHINE="!MACHINE!"
+OS="!OS!"
+CC="!CC!"
+CFLAGS="!CFLAGS!"
+RELEASE="!RELEASE!"
+PATCHLEVEL="!PATCHLEVEL!"
+RELSTATUS="!RELSTATUS!"
+MACHTYPE="!MACHTYPE!"
+
+PATH=/bin:/usr/bin:/usr/local/bin:$PATH
+export PATH
+
+# Check if TMPDIR is set, default to /tmp
+: ${TMPDIR:=/tmp}
+
+#Securely create a temporary directory for the temporary files
+TEMPDIR=$TMPDIR/bbug.$$
+(umask 077 && mkdir "$TEMPDIR") || {
+	echo "$0: could not create temporary directory" >&2
+	exit 1
+}
+
+TEMPFILE1=$TEMPDIR/bbug1
+TEMPFILE2=$TEMPDIR/bbug2
+        
+USAGE="Usage: $0 [--help] [--version] [bug-report-email-address]"
+VERSTR="GNU bashbug, version ${RELEASE}.${PATCHLEVEL}-${RELSTATUS}"
+
+do_help= do_version=
+
+while [ $# -gt 0 ]; do
+	case "$1" in
+	--help)		shift ; do_help=y ;;
+	--version)	shift ; do_version=y ;;
+	--)		shift ; break ;;
+	-*)		echo "bashbug: ${1}: invalid option" >&2
+			echo "$USAGE" >&2
+			exit 2 ;;
+	*)		break ;;
+	esac
+done
+
+if [ -n "$do_version" ]; then
+	echo "${VERSTR}"
+	exit 0
+fi
+
+if [ -n "$do_help" ]; then
+	echo "${VERSTR}"
+	echo "${USAGE}"
+	echo
+	cat << HERE_EOF
+Bashbug is used to send mail to the Bash maintainers
+for when Bash doesn't behave like you'd like, or expect.
+
+Bashbug will start up your editor (as defined by the shell's
+EDITOR environment variable) with a preformatted bug report
+template for you to fill in. The report will be mailed to the
+bug-bash mailing list by default. See the manual for details.
+
+If you invoke bashbug by accident, just quit your editor without
+saving any changes to the template, and no bug report will be sent.
+HERE_EOF
+	exit 0
+fi
+
+# Figure out how to echo a string without a trailing newline
+N=`echo 'hi there\c'`
+case "$N" in
+*c)	n=-n c= ;;
+*)	n= c='\c' ;;
+esac
+
+BASHTESTERS="bash-testers@cwru.edu"
+
+case "$RELSTATUS" in
+alpha*|beta*|devel*|rc*)	BUGBASH=chet@cwru.edu ;;
+*)				BUGBASH=bug-bash@gnu.org ;;
+esac
+
+case "$RELSTATUS" in
+alpha*|beta*|devel*|rc*)
+		echo "$0: This is a testing release.  Would you like your bug report"
+		echo "$0: to be sent to the bash-testers mailing list?"
+		echo $n "$0: Send to bash-testers? $c"
+		read ans
+		case "$ans" in
+		y*|Y*)	BUGBASH="${BUGBASH},${BASHTESTERS}" ;;
+		esac ;;
+esac
+
+BUGADDR="${1-$BUGBASH}"
+
+if [ -z "$DEFEDITOR" ] && [ -z "$EDITOR" ]; then
+	if [ -x /usr/bin/editor ]; then
+		DEFEDITOR=editor
+	elif [ -x /usr/local/bin/ce ]; then
+		DEFEDITOR=ce
+	elif [ -x /usr/local/bin/emacs ]; then
+		DEFEDITOR=emacs
+	elif [ -x /usr/contrib/bin/emacs ]; then
+		DEFEDITOR=emacs
+	elif [ -x /usr/bin/emacs ]; then
+		DEFEDITOR=emacs
+	elif [ -x /usr/bin/xemacs ]; then
+		DEFEDITOR=xemacs
+	elif [ -x /usr/bin/nano ]; then
+		DEFEDITOR=nano
+	elif [ -x /usr/contrib/bin/jove ]; then
+		DEFEDITOR=jove
+	elif [ -x /usr/local/bin/jove ]; then
+		DEFEDITOR=jove
+	elif [ -x /usr/bin/vi ]; then
+		DEFEDITOR=vi
+	else
+		echo "$0: No default editor found: attempting to use vi" >&2
+		DEFEDITOR=vi
+	fi
+fi
+
+
+: ${EDITOR=$DEFEDITOR}
+
+: ${USER=${LOGNAME-`whoami`}}
+
+trap 'rm -rf "$TEMPDIR"; exit 1' 1 2 3 13 15
+trap 'rm -rf "$TEMPDIR"' 0
+
+UN=
+if (uname) >/dev/null 2>&1; then
+	UN=`uname -a`
+fi
+
+if [ -f /usr/lib/sendmail ] ; then
+	RMAIL="/usr/lib/sendmail"
+	SMARGS="-i -t"
+elif [ -f /usr/sbin/sendmail ] ; then
+	RMAIL="/usr/sbin/sendmail"
+	SMARGS="-i -t"
+else
+	RMAIL=rmail
+	SMARGS="$BUGADDR"
+fi
+
+INITIAL_SUBJECT='[50 character or so descriptive subject here (for reference)]'
+
+cat > "$TEMPFILE1" <<EOF
+From: ${USER}
+To: ${BUGADDR}
+Subject: ${INITIAL_SUBJECT}
+
+Configuration Information [Automatically generated, do not change]:
+Machine: $MACHINE
+OS: $OS
+Compiler: $CC
+Compilation CFLAGS: $CFLAGS
+uname output: $UN
+Machine Type: $MACHTYPE
+
+Bash Version: $RELEASE
+Patch Level: $PATCHLEVEL
+Release Status: $RELSTATUS
+
+Description:
+	[Detailed description of the problem, suggestion, or complaint.]
+
+Repeat-By:
+	[Describe the sequence of events that causes the problem
+	to occur.]
+
+Fix:
+	[Description of how to fix the problem.  If you don't know a
+	fix for the problem, don't include this section.]
+EOF
+
+cp "$TEMPFILE1" "$TEMPFILE2"
+chmod u+w "$TEMPFILE1"
+
+trap '' 2		# ignore interrupts while in editor
+
+edstat=1
+while [ $edstat -ne 0 ]; do
+	$EDITOR "$TEMPFILE1"
+	edstat=$?
+
+	if [ $edstat -ne 0 ]; then
+		echo "$0: editor \`$EDITOR' exited with nonzero status."
+		echo "$0: Perhaps it was interrupted."
+		echo "$0: Type \`y' to give up, and lose your bug report;"
+		echo "$0: type \`n' to re-enter the editor."
+		echo $n "$0: Do you want to give up? $c"
+
+		read ans
+		case "$ans" in
+		[Yy]*) exit 1 ;;
+		esac
+
+		continue
+	fi
+
+	# find the subject from the temp file and see if it's been changed
+	CURR_SUB=`grep '^Subject: ' "$TEMPFILE1" | sed 's|^Subject:[ 	]*||' | sed 1q`
+
+	case "$CURR_SUB" in
+	"${INITIAL_SUBJECT}")
+		echo
+		echo "$0: You have not changed the subject from the default."
+		echo "$0: Please use a more descriptive subject header."
+		echo "$0: Type \`y' to give up, and lose your bug report;"
+		echo "$0: type \`n' to re-enter the editor."
+		echo $n "$0: Do you want to give up? $c"
+
+		read ans
+		case "$ans" in
+		[Yy]*) exit 1 ;;
+		esac
+
+		echo "$0:  The editor will be restarted in five seconds."
+		sleep 5
+		edstat=1
+		;;
+	esac
+
+done
+
+trap 'rm -rf "$TEMPDIR"; exit 1' 2	# restore trap on SIGINT
+
+if cmp -s "$TEMPFILE1" "$TEMPFILE2"
+then
+	echo "File not changed, no bug report submitted."
+	exit
+fi
+
+echo $n "Send bug report to ${BUGADDR}? [y/n] $c"
+read ans
+case "$ans" in
+[Nn]*)	exit 0 ;;
+esac
+
+${RMAIL} $SMARGS < "$TEMPFILE1" || {
+	cat "$TEMPFILE1" >> $HOME/dead.bashbug
+	echo "$0: mail to ${BUGADDR} failed: report saved in $HOME/dead.bashbug" >&2
+	echo "$0: please send it manually to ${BUGADDR}" >&2
+}
+
+exit 0
diff --git a/support/bashbug.sh.in b/support/bashbug.sh.in
new file mode 100644
index 0000000..77e14e5
--- /dev/null
+++ b/support/bashbug.sh.in
@@ -0,0 +1,278 @@
+#!/bin/sh -
+#
+# bashbug - create a bug report and mail it to the bug address
+#
+# The bug address depends on the release status of the shell.  Versions
+# with status `devel', `alpha', `beta', or `rc' mail bug reports to
+# chet.ramey@case.edu and, optionally, to bash-testers@cwru.edu.
+# Other versions send mail to bug-bash@gnu.org.
+#
+# Copyright (C) 1996-2021 Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#
+# configuration section:
+#	these variables are filled in by the make target in Makefile
+#
+MACHINE="@host_cpu@"
+OS="@host_os@"
+CC="@CC@"
+CFLAGS="@CFLAGS@"
+RELEASE="@BASHVERS@"
+PATCHLEVEL="!PATCHLEVEL!"
+RELSTATUS="@RELSTATUS@"
+MACHTYPE="@host@"
+
+PATH=/bin:/usr/bin:/usr/local/bin:$PATH
+export PATH
+
+# Check if TMPDIR is set, default to /tmp
+: ${TMPDIR:=/tmp}
+
+#Securely create a temporary directory for the temporary files
+TEMPDIR=$TMPDIR/bbug.$$
+(umask 077 && mkdir "$TEMPDIR") || {
+	echo "$0: could not create temporary directory" >&2
+	exit 1
+}
+
+TEMPFILE1=$TEMPDIR/bbug1
+TEMPFILE2=$TEMPDIR/bbug2
+        
+USAGE="Usage: $0 [--help] [--version] [bug-report-email-address]"
+VERSTR="GNU bashbug, version ${RELEASE}.${PATCHLEVEL}-${RELSTATUS}"
+
+do_help= do_version=
+
+while [ $# -gt 0 ]; do
+	case "$1" in
+	--help)		shift ; do_help=y ;;
+	--version)	shift ; do_version=y ;;
+	--)		shift ; break ;;
+	-*)		echo "bashbug: ${1}: invalid option" >&2
+			echo "$USAGE" >&2
+			exit 2 ;;
+	*)		break ;;
+	esac
+done
+
+if [ -n "$do_version" ]; then
+	echo "${VERSTR}"
+	exit 0
+fi
+
+if [ -n "$do_help" ]; then
+	echo "${VERSTR}"
+	echo "${USAGE}"
+	echo
+	cat << HERE_EOF
+Bashbug is used to send mail to the Bash maintainers
+for when Bash doesn't behave like you'd like, or expect.
+
+Bashbug will start up your editor (as defined by the shell's
+EDITOR environment variable) with a preformatted bug report
+template for you to fill in. The report will be mailed to the
+bug-bash mailing list by default. See the manual for details.
+
+If you invoke bashbug by accident, just quit your editor without
+saving any changes to the template, and no bug report will be sent.
+HERE_EOF
+	exit 0
+fi
+
+# Figure out how to echo a string without a trailing newline
+N=`echo 'hi there\c'`
+case "$N" in
+*c)	n=-n c= ;;
+*)	n= c='\c' ;;
+esac
+
+BASHTESTERS="bash-testers@cwru.edu"
+
+case "$RELSTATUS" in
+alpha*|beta*|devel*|rc*)	BUGBASH=chet.ramey@case.edu ;;
+*)				BUGBASH=bug-bash@gnu.org ;;
+esac
+
+case "$RELSTATUS" in
+alpha*|beta*|devel*|rc*)
+		echo "$0: This is a testing release.  Would you like your bug report"
+		echo "$0: to be sent to the bash-testers mailing list?"
+		echo $n "$0: Send to bash-testers? $c"
+		read ans
+		case "$ans" in
+		y*|Y*)	BUGBASH="${BUGBASH},${BASHTESTERS}" ;;
+		esac ;;
+esac
+
+BUGADDR="${1-$BUGBASH}"
+
+if [ -z "$DEFEDITOR" ] && [ -z "$EDITOR" ]; then
+	if [ -x /usr/bin/editor ]; then
+		DEFEDITOR=editor
+	elif [ -x /usr/local/bin/ce ]; then
+		DEFEDITOR=ce
+	elif [ -x /usr/local/bin/emacs ]; then
+		DEFEDITOR=emacs
+	elif [ -x /usr/contrib/bin/emacs ]; then
+		DEFEDITOR=emacs
+	elif [ -x /usr/bin/emacs ]; then
+		DEFEDITOR=emacs
+	elif [ -x /usr/bin/xemacs ]; then
+		DEFEDITOR=xemacs
+	elif [ -x /usr/bin/vim; then
+		DEFEDITOR=vim
+	elif [ -x /usr/bin/gvim; then
+		DEFEDITOR=gvim
+	elif [ -x /usr/bin/nano ]; then
+		DEFEDITOR=nano
+	elif [ -x /usr/contrib/bin/jove ]; then
+		DEFEDITOR=jove
+	elif [ -x /usr/local/bin/jove ]; then
+		DEFEDITOR=jove
+	elif [ -x /usr/bin/vi ]; then
+		DEFEDITOR=vi
+	else
+		echo "$0: No default editor found: attempting to use vi" >&2
+		DEFEDITOR=vi
+	fi
+fi
+
+
+: ${EDITOR=$DEFEDITOR}
+
+: ${USER=${LOGNAME-`whoami`}}
+
+trap 'rm -rf "$TEMPDIR"; exit 1' 1 2 3 13 15
+trap 'rm -rf "$TEMPDIR"' 0
+
+UN=
+if (uname) >/dev/null 2>&1; then
+	UN=`uname -a`
+fi
+
+if [ -f /usr/lib/sendmail ] ; then
+	RMAIL="/usr/lib/sendmail"
+	SMARGS="-i -t"
+elif [ -f /usr/sbin/sendmail ] ; then
+	RMAIL="/usr/sbin/sendmail"
+	SMARGS="-i -t"
+else
+	RMAIL=rmail
+	SMARGS="$BUGADDR"
+fi
+
+INITIAL_SUBJECT='[50 character or so descriptive subject here (for reference)]'
+
+cat > "$TEMPFILE1" <<EOF
+From: ${USER}
+To: ${BUGADDR}
+Subject: ${INITIAL_SUBJECT}
+
+Configuration Information [Automatically generated, do not change]:
+Machine: $MACHINE
+OS: $OS
+Compiler: $CC
+Compilation CFLAGS: $CFLAGS
+uname output: $UN
+Machine Type: $MACHTYPE
+
+Bash Version: $RELEASE
+Patch Level: $PATCHLEVEL
+Release Status: $RELSTATUS
+
+Description:
+	[Detailed description of the problem, suggestion, or complaint.]
+
+Repeat-By:
+	[Describe the sequence of events that causes the problem
+	to occur.]
+
+Fix:
+	[Description of how to fix the problem.  If you don't know a
+	fix for the problem, don't include this section.]
+EOF
+
+cp "$TEMPFILE1" "$TEMPFILE2"
+chmod u+w "$TEMPFILE1"
+
+trap '' 2		# ignore interrupts while in editor
+
+edstat=1
+while [ $edstat -ne 0 ]; do
+	$EDITOR "$TEMPFILE1"
+	edstat=$?
+
+	if [ $edstat -ne 0 ]; then
+		echo "$0: editor \`$EDITOR' exited with nonzero status."
+		echo "$0: Perhaps it was interrupted."
+		echo "$0: Type \`y' to give up, and lose your bug report;"
+		echo "$0: type \`n' to re-enter the editor."
+		echo $n "$0: Do you want to give up? $c"
+
+		read ans
+		case "$ans" in
+		[Yy]*) exit 1 ;;
+		esac
+
+		continue
+	fi
+
+	# find the subject from the temp file and see if it's been changed
+	CURR_SUB=`grep '^Subject: ' "$TEMPFILE1" | sed 's|^Subject:[ 	]*||' | sed 1q`
+
+	case "$CURR_SUB" in
+	"${INITIAL_SUBJECT}")
+		echo
+		echo "$0: You have not changed the subject from the default."
+		echo "$0: Please use a more descriptive subject header."
+		echo "$0: Type \`y' to give up, and lose your bug report;"
+		echo "$0: type \`n' to re-enter the editor."
+		echo $n "$0: Do you want to give up? $c"
+
+		read ans
+		case "$ans" in
+		[Yy]*) exit 1 ;;
+		esac
+
+		echo "$0:  The editor will be restarted in five seconds."
+		sleep 5
+		edstat=1
+		;;
+	esac
+
+done
+
+trap 'rm -rf "$TEMPDIR"; exit 1' 2	# restore trap on SIGINT
+
+if cmp -s "$TEMPFILE1" "$TEMPFILE2"
+then
+	echo "File not changed, no bug report submitted."
+	exit
+fi
+
+echo $n "Send bug report to ${BUGADDR}? [y/n] $c"
+read ans
+case "$ans" in
+[Nn]*)	exit 0 ;;
+esac
+
+${RMAIL} $SMARGS < "$TEMPFILE1" || {
+	cat "$TEMPFILE1" >> $HOME/dead.bashbug
+	echo "$0: mail to ${BUGADDR} failed: report saved in $HOME/dead.bashbug" >&2
+	echo "$0: please send it manually to ${BUGADDR}" >&2
+}
+
+exit 0
diff --git a/support/bashversion.c b/support/bashversion.c
new file mode 100644
index 0000000..ad02d46
--- /dev/null
+++ b/support/bashversion.c
@@ -0,0 +1,148 @@
+/* bashversion.c -- Display bash version information. */
+
+/* Copyright (C) 2001-2021 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "config.h"
+
+#include "stdc.h"
+
+#include <stdio.h>
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif
+
+#include "bashansi.h"
+
+#include "version.h"
+#include "conftypes.h"
+
+#define RFLAG	0x0001
+#define VFLAG	0x0002
+#define MFLAG	0x0004
+#define PFLAG	0x0008
+#define SFLAG	0x0010
+#define LFLAG	0x0020
+#define XFLAG	0x0040
+
+extern int optind;
+extern char *optarg;
+
+extern char *dist_version;
+extern int patch_level;
+
+extern char *shell_version_string PARAMS((void));
+extern void show_shell_version PARAMS((int));
+
+char *shell_name = "bash";
+char *progname;
+
+static void
+usage()
+{
+  fprintf(stderr, "%s: usage: %s [-hrvpmlsx]\n", progname, progname);
+}
+
+int
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  int opt, oflags;
+  char dv[128], *rv;
+
+  if (progname = strrchr (argv[0], '/'))
+    progname++;
+  else
+    progname = argv[0];
+
+  oflags = 0;
+  while ((opt = getopt(argc, argv, "hrvmpslx")) != EOF)
+    {
+      switch (opt)
+	{
+	case 'h':
+	  usage ();
+	  exit (0);
+	case 'r':
+	  oflags |= RFLAG;	/* release */
+	  break;
+	case 'v':
+	  oflags |= VFLAG;	/* version */
+	  break;
+	case 'm':
+	  oflags |= MFLAG;	/* machtype */
+	  break;
+	case 'p':
+	  oflags |= PFLAG;	/* patchlevel */
+	  break;
+	case 's':		/* short version string */
+	  oflags |= SFLAG;
+	  break;
+	case 'l':		/* long version string */
+	  oflags |= LFLAG;
+	  break;
+	case 'x':		/* extended version information */
+	  oflags |= XFLAG;
+	  break;
+	default:
+	  usage ();
+	  exit (2);
+	}
+    }
+
+  argc -= optind;
+  argv += optind;
+
+  if (argc > 0)
+    {
+      usage ();
+      exit (2);
+    }
+
+  /* default behavior */  
+  if (oflags == 0)
+    oflags = SFLAG;
+
+  if (oflags & (RFLAG|VFLAG))
+    {
+      strcpy (dv, dist_version);
+      rv = strchr (dv, '.');
+      if (rv)
+        *rv++ = '\0';
+      else
+        rv = "00";
+    }
+  if (oflags & RFLAG)
+    printf ("%s\n", dv);
+  else if (oflags & VFLAG)
+    printf ("%s\n", rv);
+  else if (oflags & MFLAG)
+    printf ("%s\n", MACHTYPE);
+  else if (oflags & PFLAG)
+    printf ("%d\n", patch_level);
+  else if (oflags & SFLAG)
+    printf ("%s\n", shell_version_string ());
+  else if (oflags & LFLAG)
+    show_shell_version (0);
+  else if (oflags & XFLAG)
+    show_shell_version (1);
+
+  exit (0);
+}
diff --git a/support/checkbashisms b/support/checkbashisms
new file mode 100755
index 0000000..ea6cc14
--- /dev/null
+++ b/support/checkbashisms
@@ -0,0 +1,170 @@
+#! /usr/bin/perl -w
+
+# This script is essentially copied from /usr/share/lintian/checks/scripts,
+# which is:
+#   Copyright (C) 1998 Richard Braakman
+#   Copyright (C) 2002 Josip Rodin
+# This version is
+#   Copyright (C) 2003 Julian Gilbey
+# 
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+use strict;
+
+(my $progname = $0) =~ s|.*/||;
+
+my $usage = <<"EOF";
+Usage: $progname [-n] script ...
+   or: $progname --help
+   or: $progname --version
+This script performs basic checks for the presence of bashisms
+in /bin/sh scripts.
+EOF
+
+my $version = <<"EOF";
+This is $progname, from the Debian devscripts package, version 2.10.7ubuntu5
+This code is copyright 2003 by Julian Gilbey <jdg\@debian.org>,
+based on original code which is copyright 1998 by Richard Braakman
+and copyright 2002 by Josip Rodin.
+This program comes with ABSOLUTELY NO WARRANTY.
+You are free to redistribute this code under the terms of the
+GNU General Public License, version 3, or (at your option) any later version.
+EOF
+
+my $opt_echo = 0;
+
+##
+## handle command-line options
+##
+if (int(@ARGV) == 0 or $ARGV[0] =~ /^(--help|-h)$/) { print $usage; exit 0; }
+if (@ARGV and $ARGV[0] =~ /^(--version|-v)$/) { print $version; exit 0; }
+if (@ARGV and $ARGV[0] =~ /^(--newline|-n)$/) { $opt_echo = 1; }
+
+
+my $status = 0;
+
+foreach my $filename (@ARGV) {
+    if ($filename eq '-n' or $filename eq '--newline') {
+	next;
+    }
+    unless (open C, "$filename") {
+	warn "cannot open script $filename for reading: $!\n";
+	$status |= 2;
+	next;
+    }
+
+    my $cat_string = "";
+
+    while (<C>) {
+	if ($. == 1) { # This should be an interpreter line
+	    if (m,^\#!\s*(\S+),) {
+		my $interpreter = $1;
+		if ($interpreter =~ m,/bash$,) {
+		    warn "script $filename is already a bash script; skipping\n";
+		    $status |= 2;
+		    last;  # end this file
+		}
+		elsif ($interpreter !~ m,/(sh|ash|dash)$,) {
+		    warn "script $filename does not appear to be a /bin/sh script; skipping\n";
+		    $status |= 2;
+		    last;
+		}
+	    } else {
+		warn "script $filename does not appear to have a \#! interpreter line;\nyou may get strange results\n";
+	    }
+	}
+
+	next if m,^\s*\#,;  # skip comment lines
+	chomp;
+	my $orig_line = $_;
+
+	s/(?<!\\)\#.*$//;   # eat comments
+
+	if (m/(?:^|\s+)cat\s*\<\<\s*(\w+)/) {
+	    $cat_string = $1;
+	}
+	elsif ($cat_string ne "" and m/^$cat_string/) {
+	    $cat_string = "";
+	}
+	my $within_another_shell = 0;
+	if (m,(^|\s+)((/usr)?/bin/)?((b|d)?a|k|z|t?c)sh\s+-c\s*.+,) {
+	    $within_another_shell = 1;
+	}
+	# if cat_string is set, we are in a HERE document and need not
+	# check for things
+	if ($cat_string eq "" and !$within_another_shell) {
+	    my $found = 0;
+	    my $match = '';
+	    my $explanation = '';
+	    my %bashisms = (
+		'(?:^|\s+)function\s+\w+' =>   q<'function' is useless>,
+		'(?:^|\s+)select\s+\w+' =>     q<'select' is not POSIX>,
+		'(?:^|\s+)source\s+(?:\.\/|\/|\$)[^\s]+' =>
+		                               q<should be '.', not 'source'>,
+		'(\[|test|-o|-a)\s*[^\s]+\s+==\s' =>
+		                               q<should be 'b = a'>,
+		'\s\|\&' =>                    q<pipelining is not POSIX>,
+		'\$\[\w+\]' =>                 q<arithmetic not allowed>,
+		'\$\{\w+\:\d+(?::\d+)?\}' =>   q<${foo:3[:1]}>,
+		'\$\{!\w+[@*]\}' =>            q<${!prefix[*|@]>,
+		'\$\{!\w+\}' =>                q<${!name}>,
+		'\$\{\w+(/.+?){1,2}\}' =>      q<${parm/?/pat[/str]}>,
+		'[^\\\]\{([^\s]+?,)+[^\\\}\s]+\}' =>
+		                               q<brace expansion>,
+		'(?:^|\s+)\w+\[\d+\]=' =>      q<bash arrays, H[0]>,
+		'\$\{\#?\w+\[[0-9\*\@]+\]\}' => q<bash arrays, ${name[0|*|@]}>,
+		'(?:^|\s+)(read\s*(?:;|$))' => q<read without variable>,
+		'\$\(\([A-Za-z]' => q<cnt=$((cnt + 1)) does not work in dash>,
+		'echo\s+-[e]' =>               q<echo -e>,
+		'exec\s+-[acl]' =>             q<exec -c/-l/-a name>,
+		'\blet\s' =>                   q<let ...>,
+		'\$RANDOM\b' =>                q<$RANDOM>,
+		'(?<!\$)\(\(' =>               q<'((' should be '$(('>,
+	    );
+
+	    if ($opt_echo) {
+		$bashisms{'echo\s+-[n]'} = 'q<echo -n>';
+	    }
+
+	    while (my ($re,$expl) = each %bashisms) {
+		if (m/($re)/) {
+		    $found = 1;
+		    $match = $1;
+		    $explanation = $expl;
+		    last;
+		}
+	    }
+	    # since this test is ugly, I have to do it by itself
+	    # detect source (.) trying to pass args to the command it runs
+	    if (not $found and m/^\s*(\.\s+[^\s]+\s+([^\s]+))/) {
+		if ($2 eq '&&' || $2 eq '||') {
+		    # everything is ok
+		    ;
+		} else {
+		    $found = 1;
+		    $match = $1;
+		}
+	    }
+	    unless ($found == 0) {
+		warn "possible bashism in $filename line $. ($explanation):\n$orig_line\n";
+		$status |= 1;
+	    }
+	}
+    }
+
+    close C;
+}
+
+exit $status;
diff --git a/support/config.guess b/support/config.guess
new file mode 100644
index 0000000..7f76b62
--- /dev/null
+++ b/support/config.guess
@@ -0,0 +1,1754 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+#   Copyright 1992-2022 Free Software Foundation, Inc.
+
+# shellcheck disable=SC2006,SC2268 # see below for rationale
+
+timestamp='2022-01-09'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+#
+# Originally written by Per Bothner; maintained since 2000 by Ben Elliston.
+#
+# You can get the latest version of this script from:
+# https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
+#
+# Please send patches to <config-patches@gnu.org>.
+
+
+# The "shellcheck disable" line above the timestamp inhibits complaints
+# about features and limitations of the classic Bourne shell that were
+# superseded or lifted in POSIX.  However, this script identifies a wide
+# variety of pre-POSIX systems that do not have POSIX shells at all, and
+# even some reasonably current systems (Solaris 10 as case-in-point) still
+# have a pre-POSIX /bin/sh.
+
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Options:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright 1992-2022 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+    * )
+       break ;;
+  esac
+done
+
+if test $# != 0; then
+  echo "$me: too many arguments$help" >&2
+  exit 1
+fi
+
+# Just in case it came from the environment.
+GUESS=
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+tmp=
+# shellcheck disable=SC2172
+trap 'test -z "$tmp" || rm -fr "$tmp"' 0 1 2 13 15
+
+set_cc_for_build() {
+    # prevent multiple calls if $tmp is already set
+    test "$tmp" && return 0
+    : "${TMPDIR=/tmp}"
+    # shellcheck disable=SC2039,SC3028
+    { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+	{ test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir "$tmp" 2>/dev/null) ; } ||
+	{ tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir "$tmp" 2>/dev/null) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+	{ echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; }
+    dummy=$tmp/dummy
+    case ${CC_FOR_BUILD-},${HOST_CC-},${CC-} in
+	,,)    echo "int x;" > "$dummy.c"
+	       for driver in cc gcc c89 c99 ; do
+		   if ($driver -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then
+		       CC_FOR_BUILD=$driver
+		       break
+		   fi
+	       done
+	       if test x"$CC_FOR_BUILD" = x ; then
+		   CC_FOR_BUILD=no_compiler_found
+	       fi
+	       ;;
+	,,*)   CC_FOR_BUILD=$CC ;;
+	,*,*)  CC_FOR_BUILD=$HOST_CC ;;
+    esac
+}
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if test -f /.attbin/uname ; then
+	PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
+UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown
+UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+
+case $UNAME_SYSTEM in
+Linux|GNU|GNU/*)
+	LIBC=unknown
+
+	set_cc_for_build
+	cat <<-EOF > "$dummy.c"
+	#include <features.h>
+	#if defined(__UCLIBC__)
+	LIBC=uclibc
+	#elif defined(__dietlibc__)
+	LIBC=dietlibc
+	#elif defined(__GLIBC__)
+	LIBC=gnu
+	#else
+	#include <stdarg.h>
+	/* First heuristic to detect musl libc.  */
+	#ifdef __DEFINED_va_list
+	LIBC=musl
+	#endif
+	#endif
+	EOF
+	cc_set_libc=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`
+	eval "$cc_set_libc"
+
+	# Second heuristic to detect musl libc.
+	if [ "$LIBC" = unknown ] &&
+	   command -v ldd >/dev/null &&
+	   ldd --version 2>&1 | grep -q ^musl; then
+		LIBC=musl
+	fi
+
+	# If the system lacks a compiler, then just pick glibc.
+	# We could probably try harder.
+	if [ "$LIBC" = unknown ]; then
+		LIBC=gnu
+	fi
+	;;
+esac
+
+# Note: order is significant - the case branches are not exclusive.
+
+case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
+    *:NetBSD:*:*)
+	# NetBSD (nbsd) targets should (where applicable) match one or
+	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
+	# switched to ELF, *-*-netbsd* would select the old
+	# object file format.  This provides both forward
+	# compatibility and a consistent mechanism for selecting the
+	# object file format.
+	#
+	# Note: NetBSD doesn't particularly care about the vendor
+	# portion of the name.  We always set it to "unknown".
+	UNAME_MACHINE_ARCH=`(uname -p 2>/dev/null || \
+	    /sbin/sysctl -n hw.machine_arch 2>/dev/null || \
+	    /usr/sbin/sysctl -n hw.machine_arch 2>/dev/null || \
+	    echo unknown)`
+	case $UNAME_MACHINE_ARCH in
+	    aarch64eb) machine=aarch64_be-unknown ;;
+	    armeb) machine=armeb-unknown ;;
+	    arm*) machine=arm-unknown ;;
+	    sh3el) machine=shl-unknown ;;
+	    sh3eb) machine=sh-unknown ;;
+	    sh5el) machine=sh5le-unknown ;;
+	    earmv*)
+		arch=`echo "$UNAME_MACHINE_ARCH" | sed -e 's,^e\(armv[0-9]\).*$,\1,'`
+		endian=`echo "$UNAME_MACHINE_ARCH" | sed -ne 's,^.*\(eb\)$,\1,p'`
+		machine=${arch}${endian}-unknown
+		;;
+	    *) machine=$UNAME_MACHINE_ARCH-unknown ;;
+	esac
+	# The Operating System including object format, if it has switched
+	# to ELF recently (or will in the future) and ABI.
+	case $UNAME_MACHINE_ARCH in
+	    earm*)
+		os=netbsdelf
+		;;
+	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
+		set_cc_for_build
+		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+			| grep -q __ELF__
+		then
+		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+		    # Return netbsd for either.  FIX?
+		    os=netbsd
+		else
+		    os=netbsdelf
+		fi
+		;;
+	    *)
+		os=netbsd
+		;;
+	esac
+	# Determine ABI tags.
+	case $UNAME_MACHINE_ARCH in
+	    earm*)
+		expr='s/^earmv[0-9]/-eabi/;s/eb$//'
+		abi=`echo "$UNAME_MACHINE_ARCH" | sed -e "$expr"`
+		;;
+	esac
+	# The OS release
+	# Debian GNU/NetBSD machines have a different userland, and
+	# thus, need a distinct triplet. However, they do not need
+	# kernel version information, so it can be replaced with a
+	# suitable tag, in the style of linux-gnu.
+	case $UNAME_VERSION in
+	    Debian*)
+		release='-gnu'
+		;;
+	    *)
+		release=`echo "$UNAME_RELEASE" | sed -e 's/[-_].*//' | cut -d. -f1,2`
+		;;
+	esac
+	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+	# contains redundant information, the shorter form:
+	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+	GUESS=$machine-${os}${release}${abi-}
+	;;
+    *:Bitrig:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
+	GUESS=$UNAME_MACHINE_ARCH-unknown-bitrig$UNAME_RELEASE
+	;;
+    *:OpenBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
+	GUESS=$UNAME_MACHINE_ARCH-unknown-openbsd$UNAME_RELEASE
+	;;
+    *:SecBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/SecBSD.//'`
+	GUESS=$UNAME_MACHINE_ARCH-unknown-secbsd$UNAME_RELEASE
+	;;
+    *:LibertyBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/^.*BSD\.//'`
+	GUESS=$UNAME_MACHINE_ARCH-unknown-libertybsd$UNAME_RELEASE
+	;;
+    *:MidnightBSD:*:*)
+	GUESS=$UNAME_MACHINE-unknown-midnightbsd$UNAME_RELEASE
+	;;
+    *:ekkoBSD:*:*)
+	GUESS=$UNAME_MACHINE-unknown-ekkobsd$UNAME_RELEASE
+	;;
+    *:SolidBSD:*:*)
+	GUESS=$UNAME_MACHINE-unknown-solidbsd$UNAME_RELEASE
+	;;
+    *:OS108:*:*)
+	GUESS=$UNAME_MACHINE-unknown-os108_$UNAME_RELEASE
+	;;
+    macppc:MirBSD:*:*)
+	GUESS=powerpc-unknown-mirbsd$UNAME_RELEASE
+	;;
+    *:MirBSD:*:*)
+	GUESS=$UNAME_MACHINE-unknown-mirbsd$UNAME_RELEASE
+	;;
+    *:Sortix:*:*)
+	GUESS=$UNAME_MACHINE-unknown-sortix
+	;;
+    *:Twizzler:*:*)
+	GUESS=$UNAME_MACHINE-unknown-twizzler
+	;;
+    *:Redox:*:*)
+	GUESS=$UNAME_MACHINE-unknown-redox
+	;;
+    mips:OSF1:*.*)
+	GUESS=mips-dec-osf1
+	;;
+    alpha:OSF1:*:*)
+	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
+	trap '' 0
+	case $UNAME_RELEASE in
+	*4.0)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+		;;
+	*5.*)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+		;;
+	esac
+	# According to Compaq, /usr/sbin/psrinfo has been available on
+	# OSF/1 and Tru64 systems produced since 1995.  I hope that
+	# covers most systems running today.  This code pipes the CPU
+	# types through head -n 1, so we only detect the type of CPU 0.
+	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
+	case $ALPHA_CPU_TYPE in
+	    "EV4 (21064)")
+		UNAME_MACHINE=alpha ;;
+	    "EV4.5 (21064)")
+		UNAME_MACHINE=alpha ;;
+	    "LCA4 (21066/21068)")
+		UNAME_MACHINE=alpha ;;
+	    "EV5 (21164)")
+		UNAME_MACHINE=alphaev5 ;;
+	    "EV5.6 (21164A)")
+		UNAME_MACHINE=alphaev56 ;;
+	    "EV5.6 (21164PC)")
+		UNAME_MACHINE=alphapca56 ;;
+	    "EV5.7 (21164PC)")
+		UNAME_MACHINE=alphapca57 ;;
+	    "EV6 (21264)")
+		UNAME_MACHINE=alphaev6 ;;
+	    "EV6.7 (21264A)")
+		UNAME_MACHINE=alphaev67 ;;
+	    "EV6.8CB (21264C)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.8AL (21264B)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.8CX (21264D)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.9A (21264/EV69A)")
+		UNAME_MACHINE=alphaev69 ;;
+	    "EV7 (21364)")
+		UNAME_MACHINE=alphaev7 ;;
+	    "EV7.9 (21364A)")
+		UNAME_MACHINE=alphaev79 ;;
+	esac
+	# A Pn.n version is a patched version.
+	# A Vn.n version is a released version.
+	# A Tn.n version is a released field test version.
+	# A Xn.n version is an unreleased experimental baselevel.
+	# 1.2 uses "1.2" for uname -r.
+	OSF_REL=`echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
+	GUESS=$UNAME_MACHINE-dec-osf$OSF_REL
+	;;
+    Amiga*:UNIX_System_V:4.0:*)
+	GUESS=m68k-unknown-sysv4
+	;;
+    *:[Aa]miga[Oo][Ss]:*:*)
+	GUESS=$UNAME_MACHINE-unknown-amigaos
+	;;
+    *:[Mm]orph[Oo][Ss]:*:*)
+	GUESS=$UNAME_MACHINE-unknown-morphos
+	;;
+    *:OS/390:*:*)
+	GUESS=i370-ibm-openedition
+	;;
+    *:z/VM:*:*)
+	GUESS=s390-ibm-zvmoe
+	;;
+    *:OS400:*:*)
+	GUESS=powerpc-ibm-os400
+	;;
+    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+	GUESS=arm-acorn-riscix$UNAME_RELEASE
+	;;
+    arm*:riscos:*:*|arm*:RISCOS:*:*)
+	GUESS=arm-unknown-riscos
+	;;
+    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+	GUESS=hppa1.1-hitachi-hiuxmpp
+	;;
+    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+	case `(/bin/universe) 2>/dev/null` in
+	    att) GUESS=pyramid-pyramid-sysv3 ;;
+	    *)   GUESS=pyramid-pyramid-bsd   ;;
+	esac
+	;;
+    NILE*:*:*:dcosx)
+	GUESS=pyramid-pyramid-svr4
+	;;
+    DRS?6000:unix:4.0:6*)
+	GUESS=sparc-icl-nx6
+	;;
+    DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
+	case `/usr/bin/uname -p` in
+	    sparc) GUESS=sparc-icl-nx7 ;;
+	esac
+	;;
+    s390x:SunOS:*:*)
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=$UNAME_MACHINE-ibm-solaris2$SUN_REL
+	;;
+    sun4H:SunOS:5.*:*)
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=sparc-hal-solaris2$SUN_REL
+	;;
+    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=sparc-sun-solaris2$SUN_REL
+	;;
+    i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
+	GUESS=i386-pc-auroraux$UNAME_RELEASE
+	;;
+    i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
+	set_cc_for_build
+	SUN_ARCH=i386
+	# If there is a compiler, see if it is configured for 64-bit objects.
+	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
+	# This test works for both compilers.
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
+		(CCOPTS="" $CC_FOR_BUILD -m64 -E - 2>/dev/null) | \
+		grep IS_64BIT_ARCH >/dev/null
+	    then
+		SUN_ARCH=x86_64
+	    fi
+	fi
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=$SUN_ARCH-pc-solaris2$SUN_REL
+	;;
+    sun4*:SunOS:6*:*)
+	# According to config.sub, this is the proper way to canonicalize
+	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
+	# it's likely to be more like Solaris than SunOS4.
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=sparc-sun-solaris3$SUN_REL
+	;;
+    sun4*:SunOS:*:*)
+	case `/usr/bin/arch -k` in
+	    Series*|S4*)
+		UNAME_RELEASE=`uname -v`
+		;;
+	esac
+	# Japanese Language versions have a version number like `4.1.3-JL'.
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/-/_/'`
+	GUESS=sparc-sun-sunos$SUN_REL
+	;;
+    sun3*:SunOS:*:*)
+	GUESS=m68k-sun-sunos$UNAME_RELEASE
+	;;
+    sun*:*:4.2BSD:*)
+	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
+	test "x$UNAME_RELEASE" = x && UNAME_RELEASE=3
+	case `/bin/arch` in
+	    sun3)
+		GUESS=m68k-sun-sunos$UNAME_RELEASE
+		;;
+	    sun4)
+		GUESS=sparc-sun-sunos$UNAME_RELEASE
+		;;
+	esac
+	;;
+    aushp:SunOS:*:*)
+	GUESS=sparc-auspex-sunos$UNAME_RELEASE
+	;;
+    # The situation for MiNT is a little confusing.  The machine name
+    # can be virtually everything (everything which is not
+    # "atarist" or "atariste" at least should have a processor
+    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
+    # to the lowercase version "mint" (or "freemint").  Finally
+    # the system name "TOS" denotes a system which is actually not
+    # MiNT.  But MiNT is downward compatible to TOS, so this should
+    # be no problem.
+    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+	GUESS=m68k-atari-mint$UNAME_RELEASE
+	;;
+    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+	GUESS=m68k-atari-mint$UNAME_RELEASE
+	;;
+    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+	GUESS=m68k-atari-mint$UNAME_RELEASE
+	;;
+    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+	GUESS=m68k-milan-mint$UNAME_RELEASE
+	;;
+    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+	GUESS=m68k-hades-mint$UNAME_RELEASE
+	;;
+    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+	GUESS=m68k-unknown-mint$UNAME_RELEASE
+	;;
+    m68k:machten:*:*)
+	GUESS=m68k-apple-machten$UNAME_RELEASE
+	;;
+    powerpc:machten:*:*)
+	GUESS=powerpc-apple-machten$UNAME_RELEASE
+	;;
+    RISC*:Mach:*:*)
+	GUESS=mips-dec-mach_bsd4.3
+	;;
+    RISC*:ULTRIX:*:*)
+	GUESS=mips-dec-ultrix$UNAME_RELEASE
+	;;
+    VAX*:ULTRIX*:*:*)
+	GUESS=vax-dec-ultrix$UNAME_RELEASE
+	;;
+    2020:CLIX:*:* | 2430:CLIX:*:*)
+	GUESS=clipper-intergraph-clix$UNAME_RELEASE
+	;;
+    mips:*:*:UMIPS | mips:*:*:RISCos)
+	set_cc_for_build
+	sed 's/^	//' << EOF > "$dummy.c"
+#ifdef __cplusplus
+#include <stdio.h>  /* for printf() prototype */
+	int main (int argc, char *argv[]) {
+#else
+	int main (argc, argv) int argc; char *argv[]; {
+#endif
+	#if defined (host_mips) && defined (MIPSEB)
+	#if defined (SYSTYPE_SYSV)
+	  printf ("mips-mips-riscos%ssysv\\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_SVR4)
+	  printf ("mips-mips-riscos%ssvr4\\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+	  printf ("mips-mips-riscos%sbsd\\n", argv[1]); exit (0);
+	#endif
+	#endif
+	  exit (-1);
+	}
+EOF
+	$CC_FOR_BUILD -o "$dummy" "$dummy.c" &&
+	  dummyarg=`echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p'` &&
+	  SYSTEM_NAME=`"$dummy" "$dummyarg"` &&
+	    { echo "$SYSTEM_NAME"; exit; }
+	GUESS=mips-mips-riscos$UNAME_RELEASE
+	;;
+    Motorola:PowerMAX_OS:*:*)
+	GUESS=powerpc-motorola-powermax
+	;;
+    Motorola:*:4.3:PL8-*)
+	GUESS=powerpc-harris-powermax
+	;;
+    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+	GUESS=powerpc-harris-powermax
+	;;
+    Night_Hawk:Power_UNIX:*:*)
+	GUESS=powerpc-harris-powerunix
+	;;
+    m88k:CX/UX:7*:*)
+	GUESS=m88k-harris-cxux7
+	;;
+    m88k:*:4*:R4*)
+	GUESS=m88k-motorola-sysv4
+	;;
+    m88k:*:3*:R3*)
+	GUESS=m88k-motorola-sysv3
+	;;
+    AViiON:dgux:*:*)
+	# DG/UX returns AViiON for all architectures
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	if test "$UNAME_PROCESSOR" = mc88100 || test "$UNAME_PROCESSOR" = mc88110
+	then
+	    if test "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx || \
+	       test "$TARGET_BINARY_INTERFACE"x = x
+	    then
+		GUESS=m88k-dg-dgux$UNAME_RELEASE
+	    else
+		GUESS=m88k-dg-dguxbcs$UNAME_RELEASE
+	    fi
+	else
+	    GUESS=i586-dg-dgux$UNAME_RELEASE
+	fi
+	;;
+    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
+	GUESS=m88k-dolphin-sysv3
+	;;
+    M88*:*:R3*:*)
+	# Delta 88k system running SVR3
+	GUESS=m88k-motorola-sysv3
+	;;
+    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+	GUESS=m88k-tektronix-sysv3
+	;;
+    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+	GUESS=m68k-tektronix-bsd
+	;;
+    *:IRIX*:*:*)
+	IRIX_REL=`echo "$UNAME_RELEASE" | sed -e 's/-/_/g'`
+	GUESS=mips-sgi-irix$IRIX_REL
+	;;
+    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+	GUESS=romp-ibm-aix    # uname -m gives an 8 hex-code CPU id
+	;;                    # Note that: echo "'`uname -s`'" gives 'AIX '
+    i*86:AIX:*:*)
+	GUESS=i386-ibm-aix
+	;;
+    ia64:AIX:*:*)
+	if test -x /usr/bin/oslevel ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=$UNAME_VERSION.$UNAME_RELEASE
+	fi
+	GUESS=$UNAME_MACHINE-ibm-aix$IBM_REV
+	;;
+    *:AIX:2:3)
+	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+		set_cc_for_build
+		sed 's/^		//' << EOF > "$dummy.c"
+		#include <sys/systemcfg.h>
+
+		main()
+			{
+			if (!__power_pc())
+				exit(1);
+			puts("powerpc-ibm-aix3.2.5");
+			exit(0);
+			}
+EOF
+		if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"`
+		then
+			GUESS=$SYSTEM_NAME
+		else
+			GUESS=rs6000-ibm-aix3.2.5
+		fi
+	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+		GUESS=rs6000-ibm-aix3.2.4
+	else
+		GUESS=rs6000-ibm-aix3.2
+	fi
+	;;
+    *:AIX:*:[4567])
+	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
+	if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; then
+		IBM_ARCH=rs6000
+	else
+		IBM_ARCH=powerpc
+	fi
+	if test -x /usr/bin/lslpp ; then
+		IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | \
+			   awk -F: '{ print $3 }' | sed s/[0-9]*$/0/`
+	else
+		IBM_REV=$UNAME_VERSION.$UNAME_RELEASE
+	fi
+	GUESS=$IBM_ARCH-ibm-aix$IBM_REV
+	;;
+    *:AIX:*:*)
+	GUESS=rs6000-ibm-aix
+	;;
+    ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*)
+	GUESS=romp-ibm-bsd4.4
+	;;
+    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
+	GUESS=romp-ibm-bsd$UNAME_RELEASE    # 4.3 with uname added to
+	;;                                  # report: romp-ibm BSD 4.3
+    *:BOSX:*:*)
+	GUESS=rs6000-bull-bosx
+	;;
+    DPX/2?00:B.O.S.:*:*)
+	GUESS=m68k-bull-sysv3
+	;;
+    9000/[34]??:4.3bsd:1.*:*)
+	GUESS=m68k-hp-bsd
+	;;
+    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+	GUESS=m68k-hp-bsd4.4
+	;;
+    9000/[34678]??:HP-UX:*:*)
+	HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'`
+	case $UNAME_MACHINE in
+	    9000/31?)            HP_ARCH=m68000 ;;
+	    9000/[34]??)         HP_ARCH=m68k ;;
+	    9000/[678][0-9][0-9])
+		if test -x /usr/bin/getconf; then
+		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
+		    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+		    case $sc_cpu_version in
+		      523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0
+		      528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1
+		      532)                      # CPU_PA_RISC2_0
+			case $sc_kernel_bits in
+			  32) HP_ARCH=hppa2.0n ;;
+			  64) HP_ARCH=hppa2.0w ;;
+			  '') HP_ARCH=hppa2.0 ;;   # HP-UX 10.20
+			esac ;;
+		    esac
+		fi
+		if test "$HP_ARCH" = ""; then
+		    set_cc_for_build
+		    sed 's/^		//' << EOF > "$dummy.c"
+
+		#define _HPUX_SOURCE
+		#include <stdlib.h>
+		#include <unistd.h>
+
+		int main ()
+		{
+		#if defined(_SC_KERNEL_BITS)
+		    long bits = sysconf(_SC_KERNEL_BITS);
+		#endif
+		    long cpu  = sysconf (_SC_CPU_VERSION);
+
+		    switch (cpu)
+			{
+			case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+			case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+			case CPU_PA_RISC2_0:
+		#if defined(_SC_KERNEL_BITS)
+			    switch (bits)
+				{
+				case 64: puts ("hppa2.0w"); break;
+				case 32: puts ("hppa2.0n"); break;
+				default: puts ("hppa2.0"); break;
+				} break;
+		#else  /* !defined(_SC_KERNEL_BITS) */
+			    puts ("hppa2.0"); break;
+		#endif
+			default: puts ("hppa1.0"); break;
+			}
+		    exit (0);
+		}
+EOF
+		    (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null) && HP_ARCH=`"$dummy"`
+		    test -z "$HP_ARCH" && HP_ARCH=hppa
+		fi ;;
+	esac
+	if test "$HP_ARCH" = hppa2.0w
+	then
+	    set_cc_for_build
+
+	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
+	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
+	    # generating 64-bit code.  GNU and HP use different nomenclature:
+	    #
+	    # $ CC_FOR_BUILD=cc ./config.guess
+	    # => hppa2.0w-hp-hpux11.23
+	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
+	    # => hppa64-hp-hpux11.23
+
+	    if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) |
+		grep -q __LP64__
+	    then
+		HP_ARCH=hppa2.0w
+	    else
+		HP_ARCH=hppa64
+	    fi
+	fi
+	GUESS=$HP_ARCH-hp-hpux$HPUX_REV
+	;;
+    ia64:HP-UX:*:*)
+	HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'`
+	GUESS=ia64-hp-hpux$HPUX_REV
+	;;
+    3050*:HI-UX:*:*)
+	set_cc_for_build
+	sed 's/^	//' << EOF > "$dummy.c"
+	#include <unistd.h>
+	int
+	main ()
+	{
+	  long cpu = sysconf (_SC_CPU_VERSION);
+	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
+	     results, however.  */
+	  if (CPU_IS_PA_RISC (cpu))
+	    {
+	      switch (cpu)
+		{
+		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+		  default: puts ("hppa-hitachi-hiuxwe2"); break;
+		}
+	    }
+	  else if (CPU_IS_HP_MC68K (cpu))
+	    puts ("m68k-hitachi-hiuxwe2");
+	  else puts ("unknown-hitachi-hiuxwe2");
+	  exit (0);
+	}
+EOF
+	$CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` &&
+		{ echo "$SYSTEM_NAME"; exit; }
+	GUESS=unknown-hitachi-hiuxwe2
+	;;
+    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*)
+	GUESS=hppa1.1-hp-bsd
+	;;
+    9000/8??:4.3bsd:*:*)
+	GUESS=hppa1.0-hp-bsd
+	;;
+    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+	GUESS=hppa1.0-hp-mpeix
+	;;
+    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*)
+	GUESS=hppa1.1-hp-osf
+	;;
+    hp8??:OSF1:*:*)
+	GUESS=hppa1.0-hp-osf
+	;;
+    i*86:OSF1:*:*)
+	if test -x /usr/sbin/sysversion ; then
+	    GUESS=$UNAME_MACHINE-unknown-osf1mk
+	else
+	    GUESS=$UNAME_MACHINE-unknown-osf1
+	fi
+	;;
+    parisc*:Lites*:*:*)
+	GUESS=hppa1.1-hp-lites
+	;;
+    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+	GUESS=c1-convex-bsd
+	;;
+    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit ;;
+    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+	GUESS=c34-convex-bsd
+	;;
+    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+	GUESS=c38-convex-bsd
+	;;
+    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+	GUESS=c4-convex-bsd
+	;;
+    CRAY*Y-MP:*:*:*)
+	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
+	GUESS=ymp-cray-unicos$CRAY_REL
+	;;
+    CRAY*[A-Z]90:*:*:*)
+	echo "$UNAME_MACHINE"-cray-unicos"$UNAME_RELEASE" \
+	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+	      -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*TS:*:*:*)
+	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
+	GUESS=t90-cray-unicos$CRAY_REL
+	;;
+    CRAY*T3E:*:*:*)
+	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
+	GUESS=alphaev5-cray-unicosmk$CRAY_REL
+	;;
+    CRAY*SV1:*:*:*)
+	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
+	GUESS=sv1-cray-unicos$CRAY_REL
+	;;
+    *:UNICOS/mp:*:*)
+	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
+	GUESS=craynv-cray-unicosmp$CRAY_REL
+	;;
+    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+	FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
+	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
+	FUJITSU_REL=`echo "$UNAME_RELEASE" | sed -e 's/ /_/'`
+	GUESS=${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}
+	;;
+    5000:UNIX_System_V:4.*:*)
+	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
+	FUJITSU_REL=`echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'`
+	GUESS=sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}
+	;;
+    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+	GUESS=$UNAME_MACHINE-pc-bsdi$UNAME_RELEASE
+	;;
+    sparc*:BSD/OS:*:*)
+	GUESS=sparc-unknown-bsdi$UNAME_RELEASE
+	;;
+    *:BSD/OS:*:*)
+	GUESS=$UNAME_MACHINE-unknown-bsdi$UNAME_RELEASE
+	;;
+    arm:FreeBSD:*:*)
+	UNAME_PROCESSOR=`uname -p`
+	set_cc_for_build
+	if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_PCS_VFP
+	then
+	    FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
+	    GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabi
+	else
+	    FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
+	    GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabihf
+	fi
+	;;
+    *:FreeBSD:*:*)
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	case $UNAME_PROCESSOR in
+	    amd64)
+		UNAME_PROCESSOR=x86_64 ;;
+	    i386)
+		UNAME_PROCESSOR=i586 ;;
+	esac
+	FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
+	GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL
+	;;
+    i*:CYGWIN*:*)
+	GUESS=$UNAME_MACHINE-pc-cygwin
+	;;
+    *:MINGW64*:*)
+	GUESS=$UNAME_MACHINE-pc-mingw64
+	;;
+    *:MINGW*:*)
+	GUESS=$UNAME_MACHINE-pc-mingw32
+	;;
+    *:MSYS*:*)
+	GUESS=$UNAME_MACHINE-pc-msys
+	;;
+    i*:PW*:*)
+	GUESS=$UNAME_MACHINE-pc-pw32
+	;;
+    *:SerenityOS:*:*)
+        GUESS=$UNAME_MACHINE-pc-serenity
+        ;;
+    *:Interix*:*)
+	case $UNAME_MACHINE in
+	    x86)
+		GUESS=i586-pc-interix$UNAME_RELEASE
+		;;
+	    authenticamd | genuineintel | EM64T)
+		GUESS=x86_64-unknown-interix$UNAME_RELEASE
+		;;
+	    IA64)
+		GUESS=ia64-unknown-interix$UNAME_RELEASE
+		;;
+	esac ;;
+    i*:UWIN*:*)
+	GUESS=$UNAME_MACHINE-pc-uwin
+	;;
+    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
+	GUESS=x86_64-pc-cygwin
+	;;
+    prep*:SunOS:5.*:*)
+	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
+	GUESS=powerpcle-unknown-solaris2$SUN_REL
+	;;
+    *:GNU:*:*)
+	# the GNU system
+	GNU_ARCH=`echo "$UNAME_MACHINE" | sed -e 's,[-/].*$,,'`
+	GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's,/.*$,,'`
+	GUESS=$GNU_ARCH-unknown-$LIBC$GNU_REL
+	;;
+    *:GNU/*:*:*)
+	# other systems with GNU libc and userland
+	GNU_SYS=`echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"`
+	GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
+	GUESS=$UNAME_MACHINE-unknown-$GNU_SYS$GNU_REL-$LIBC
+	;;
+    *:Minix:*:*)
+	GUESS=$UNAME_MACHINE-unknown-minix
+	;;
+    aarch64:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    aarch64_be:Linux:*:*)
+	UNAME_MACHINE=aarch64_be
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    alpha:Linux:*:*)
+	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' /proc/cpuinfo 2>/dev/null` in
+	  EV5)   UNAME_MACHINE=alphaev5 ;;
+	  EV56)  UNAME_MACHINE=alphaev56 ;;
+	  PCA56) UNAME_MACHINE=alphapca56 ;;
+	  PCA57) UNAME_MACHINE=alphapca56 ;;
+	  EV6)   UNAME_MACHINE=alphaev6 ;;
+	  EV67)  UNAME_MACHINE=alphaev67 ;;
+	  EV68*) UNAME_MACHINE=alphaev68 ;;
+	esac
+	objdump --private-headers /bin/sh | grep -q ld.so.1
+	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    arc:Linux:*:* | arceb:Linux:*:* | arc32:Linux:*:* | arc64:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    arm*:Linux:*:*)
+	set_cc_for_build
+	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_EABI__
+	then
+	    GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	else
+	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+		| grep -q __ARM_PCS_VFP
+	    then
+		GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabi
+	    else
+		GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabihf
+	    fi
+	fi
+	;;
+    avr32*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    cris:Linux:*:*)
+	GUESS=$UNAME_MACHINE-axis-linux-$LIBC
+	;;
+    crisv32:Linux:*:*)
+	GUESS=$UNAME_MACHINE-axis-linux-$LIBC
+	;;
+    e2k:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    frv:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    hexagon:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    i*86:Linux:*:*)
+	GUESS=$UNAME_MACHINE-pc-linux-$LIBC
+	;;
+    ia64:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    k1om:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    loongarch32:Linux:*:* | loongarch64:Linux:*:* | loongarchx32:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    m32r*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    m68*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    mips:Linux:*:* | mips64:Linux:*:*)
+	set_cc_for_build
+	IS_GLIBC=0
+	test x"${LIBC}" = xgnu && IS_GLIBC=1
+	sed 's/^	//' << EOF > "$dummy.c"
+	#undef CPU
+	#undef mips
+	#undef mipsel
+	#undef mips64
+	#undef mips64el
+	#if ${IS_GLIBC} && defined(_ABI64)
+	LIBCABI=gnuabi64
+	#else
+	#if ${IS_GLIBC} && defined(_ABIN32)
+	LIBCABI=gnuabin32
+	#else
+	LIBCABI=${LIBC}
+	#endif
+	#endif
+
+	#if ${IS_GLIBC} && defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
+	CPU=mipsisa64r6
+	#else
+	#if ${IS_GLIBC} && !defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
+	CPU=mipsisa32r6
+	#else
+	#if defined(__mips64)
+	CPU=mips64
+	#else
+	CPU=mips
+	#endif
+	#endif
+	#endif
+
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	MIPS_ENDIAN=el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	MIPS_ENDIAN=
+	#else
+	MIPS_ENDIAN=
+	#endif
+	#endif
+EOF
+	cc_set_vars=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU\|^MIPS_ENDIAN\|^LIBCABI'`
+	eval "$cc_set_vars"
+	test "x$CPU" != x && { echo "$CPU${MIPS_ENDIAN}-unknown-linux-$LIBCABI"; exit; }
+	;;
+    mips64el:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    openrisc*:Linux:*:*)
+	GUESS=or1k-unknown-linux-$LIBC
+	;;
+    or32:Linux:*:* | or1k*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    padre:Linux:*:*)
+	GUESS=sparc-unknown-linux-$LIBC
+	;;
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
+	GUESS=hppa64-unknown-linux-$LIBC
+	;;
+    parisc:Linux:*:* | hppa:Linux:*:*)
+	# Look for CPU level
+	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
+	  PA7*) GUESS=hppa1.1-unknown-linux-$LIBC ;;
+	  PA8*) GUESS=hppa2.0-unknown-linux-$LIBC ;;
+	  *)    GUESS=hppa-unknown-linux-$LIBC ;;
+	esac
+	;;
+    ppc64:Linux:*:*)
+	GUESS=powerpc64-unknown-linux-$LIBC
+	;;
+    ppc:Linux:*:*)
+	GUESS=powerpc-unknown-linux-$LIBC
+	;;
+    ppc64le:Linux:*:*)
+	GUESS=powerpc64le-unknown-linux-$LIBC
+	;;
+    ppcle:Linux:*:*)
+	GUESS=powerpcle-unknown-linux-$LIBC
+	;;
+    riscv32:Linux:*:* | riscv32be:Linux:*:* | riscv64:Linux:*:* | riscv64be:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    s390:Linux:*:* | s390x:Linux:*:*)
+	GUESS=$UNAME_MACHINE-ibm-linux-$LIBC
+	;;
+    sh64*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    sh*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    sparc:Linux:*:* | sparc64:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    tile*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    vax:Linux:*:*)
+	GUESS=$UNAME_MACHINE-dec-linux-$LIBC
+	;;
+    x86_64:Linux:*:*)
+	set_cc_for_build
+	LIBCABI=$LIBC
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __ILP32__'; echo IS_X32; echo '#endif') | \
+		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		grep IS_X32 >/dev/null
+	    then
+		LIBCABI=${LIBC}x32
+	    fi
+	fi
+	GUESS=$UNAME_MACHINE-pc-linux-$LIBCABI
+	;;
+    xtensa*:Linux:*:*)
+	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	;;
+    i*86:DYNIX/ptx:4*:*)
+	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+	# earlier versions are messed up and put the nodename in both
+	# sysname and nodename.
+	GUESS=i386-sequent-sysv4
+	;;
+    i*86:UNIX_SV:4.2MP:2.*)
+	# Unixware is an offshoot of SVR4, but it has its own version
+	# number series starting with 2...
+	# I am not positive that other SVR4 systems won't match this,
+	# I just have to hope.  -- rms.
+	# Use sysv4.2uw... so that sysv4* matches it.
+	GUESS=$UNAME_MACHINE-pc-sysv4.2uw$UNAME_VERSION
+	;;
+    i*86:OS/2:*:*)
+	# If we were able to find `uname', then EMX Unix compatibility
+	# is probably installed.
+	GUESS=$UNAME_MACHINE-pc-os2-emx
+	;;
+    i*86:XTS-300:*:STOP)
+	GUESS=$UNAME_MACHINE-unknown-stop
+	;;
+    i*86:atheos:*:*)
+	GUESS=$UNAME_MACHINE-unknown-atheos
+	;;
+    i*86:syllable:*:*)
+	GUESS=$UNAME_MACHINE-pc-syllable
+	;;
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
+	GUESS=i386-unknown-lynxos$UNAME_RELEASE
+	;;
+    i*86:*DOS:*:*)
+	GUESS=$UNAME_MACHINE-pc-msdosdjgpp
+	;;
+    i*86:*:4.*:*)
+	UNAME_REL=`echo "$UNAME_RELEASE" | sed 's/\/MP$//'`
+	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+		GUESS=$UNAME_MACHINE-univel-sysv$UNAME_REL
+	else
+		GUESS=$UNAME_MACHINE-pc-sysv$UNAME_REL
+	fi
+	;;
+    i*86:*:5:[678]*)
+	# UnixWare 7.x, OpenUNIX and OpenServer 6.
+	case `/bin/uname -X | grep "^Machine"` in
+	    *486*)	     UNAME_MACHINE=i486 ;;
+	    *Pentium)	     UNAME_MACHINE=i586 ;;
+	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+	esac
+	GUESS=$UNAME_MACHINE-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
+	;;
+    i*86:*:3.2:*)
+	if test -f /usr/options/cb.name; then
+		UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
+		GUESS=$UNAME_MACHINE-pc-isc$UNAME_REL
+	elif /bin/uname -X 2>/dev/null >/dev/null ; then
+		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
+		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+			&& UNAME_MACHINE=i586
+		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		GUESS=$UNAME_MACHINE-pc-sco$UNAME_REL
+	else
+		GUESS=$UNAME_MACHINE-pc-sysv32
+	fi
+	;;
+    pc:*:*:*)
+	# Left here for compatibility:
+	# uname -m prints for DJGPP always 'pc', but it prints nothing about
+	# the processor, so we play safe by assuming i586.
+	# Note: whatever this is, it MUST be the same as what config.sub
+	# prints for the "djgpp" host, or else GDB configure will decide that
+	# this is a cross-build.
+	GUESS=i586-pc-msdosdjgpp
+	;;
+    Intel:Mach:3*:*)
+	GUESS=i386-pc-mach3
+	;;
+    paragon:*:*:*)
+	GUESS=i860-intel-osf1
+	;;
+    i860:*:4.*:*) # i860-SVR4
+	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+	  GUESS=i860-stardent-sysv$UNAME_RELEASE    # Stardent Vistra i860-SVR4
+	else # Add other i860-SVR4 vendors below as they are discovered.
+	  GUESS=i860-unknown-sysv$UNAME_RELEASE     # Unknown i860-SVR4
+	fi
+	;;
+    mini*:CTIX:SYS*5:*)
+	# "miniframe"
+	GUESS=m68010-convergent-sysv
+	;;
+    mc68k:UNIX:SYSTEM5:3.51m)
+	GUESS=m68k-convergent-sysv
+	;;
+    M680?0:D-NIX:5.3:*)
+	GUESS=m68k-diab-dnix
+	;;
+    M68*:*:R3V[5678]*:*)
+	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
+    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+	OS_REL=''
+	test -r /etc/.relid \
+	&& OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	  && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
+    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4; exit; } ;;
+    NCR*:*:4.2:* | MPRAS*:*:4.2:*)
+	OS_REL='.3'
+	test -r /etc/.relid \
+	    && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	    && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
+	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
+    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+	GUESS=m68k-unknown-lynxos$UNAME_RELEASE
+	;;
+    mc68030:UNIX_System_V:4.*:*)
+	GUESS=m68k-atari-sysv4
+	;;
+    TSUNAMI:LynxOS:2.*:*)
+	GUESS=sparc-unknown-lynxos$UNAME_RELEASE
+	;;
+    rs6000:LynxOS:2.*:*)
+	GUESS=rs6000-unknown-lynxos$UNAME_RELEASE
+	;;
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
+	GUESS=powerpc-unknown-lynxos$UNAME_RELEASE
+	;;
+    SM[BE]S:UNIX_SV:*:*)
+	GUESS=mips-dde-sysv$UNAME_RELEASE
+	;;
+    RM*:ReliantUNIX-*:*:*)
+	GUESS=mips-sni-sysv4
+	;;
+    RM*:SINIX-*:*:*)
+	GUESS=mips-sni-sysv4
+	;;
+    *:SINIX-*:*:*)
+	if uname -p 2>/dev/null >/dev/null ; then
+		UNAME_MACHINE=`(uname -p) 2>/dev/null`
+		GUESS=$UNAME_MACHINE-sni-sysv4
+	else
+		GUESS=ns32k-sni-sysv
+	fi
+	;;
+    PENTIUM:*:4.0*:*)	# Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+			# says <Richard.M.Bartel@ccMail.Census.GOV>
+	GUESS=i586-unisys-sysv4
+	;;
+    *:UNIX_System_V:4*:FTX*)
+	# From Gerald Hewes <hewes@openmarket.com>.
+	# How about differentiating between stratus architectures? -djm
+	GUESS=hppa1.1-stratus-sysv4
+	;;
+    *:*:*:FTX*)
+	# From seanf@swdc.stratus.com.
+	GUESS=i860-stratus-sysv4
+	;;
+    i*86:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	GUESS=$UNAME_MACHINE-stratus-vos
+	;;
+    *:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	GUESS=hppa1.1-stratus-vos
+	;;
+    mc68*:A/UX:*:*)
+	GUESS=m68k-apple-aux$UNAME_RELEASE
+	;;
+    news*:NEWS-OS:6*:*)
+	GUESS=mips-sony-newsos6
+	;;
+    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+	if test -d /usr/nec; then
+		GUESS=mips-nec-sysv$UNAME_RELEASE
+	else
+		GUESS=mips-unknown-sysv$UNAME_RELEASE
+	fi
+	;;
+    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
+	GUESS=powerpc-be-beos
+	;;
+    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
+	GUESS=powerpc-apple-beos
+	;;
+    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
+	GUESS=i586-pc-beos
+	;;
+    BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
+	GUESS=i586-pc-haiku
+	;;
+    x86_64:Haiku:*:*)
+	GUESS=x86_64-unknown-haiku
+	;;
+    SX-4:SUPER-UX:*:*)
+	GUESS=sx4-nec-superux$UNAME_RELEASE
+	;;
+    SX-5:SUPER-UX:*:*)
+	GUESS=sx5-nec-superux$UNAME_RELEASE
+	;;
+    SX-6:SUPER-UX:*:*)
+	GUESS=sx6-nec-superux$UNAME_RELEASE
+	;;
+    SX-7:SUPER-UX:*:*)
+	GUESS=sx7-nec-superux$UNAME_RELEASE
+	;;
+    SX-8:SUPER-UX:*:*)
+	GUESS=sx8-nec-superux$UNAME_RELEASE
+	;;
+    SX-8R:SUPER-UX:*:*)
+	GUESS=sx8r-nec-superux$UNAME_RELEASE
+	;;
+    SX-ACE:SUPER-UX:*:*)
+	GUESS=sxace-nec-superux$UNAME_RELEASE
+	;;
+    Power*:Rhapsody:*:*)
+	GUESS=powerpc-apple-rhapsody$UNAME_RELEASE
+	;;
+    *:Rhapsody:*:*)
+	GUESS=$UNAME_MACHINE-apple-rhapsody$UNAME_RELEASE
+	;;
+    arm64:Darwin:*:*)
+	GUESS=aarch64-apple-darwin$UNAME_RELEASE
+	;;
+    *:Darwin:*:*)
+	UNAME_PROCESSOR=`uname -p`
+	case $UNAME_PROCESSOR in
+	    unknown) UNAME_PROCESSOR=powerpc ;;
+	esac
+	if command -v xcode-select > /dev/null 2> /dev/null && \
+		! xcode-select --print-path > /dev/null 2> /dev/null ; then
+	    # Avoid executing cc if there is no toolchain installed as
+	    # cc will be a stub that puts up a graphical alert
+	    # prompting the user to install developer tools.
+	    CC_FOR_BUILD=no_compiler_found
+	else
+	    set_cc_for_build
+	fi
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
+		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		   grep IS_64BIT_ARCH >/dev/null
+	    then
+		case $UNAME_PROCESSOR in
+		    i386) UNAME_PROCESSOR=x86_64 ;;
+		    powerpc) UNAME_PROCESSOR=powerpc64 ;;
+		esac
+	    fi
+	    # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
+	    if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
+		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		   grep IS_PPC >/dev/null
+	    then
+		UNAME_PROCESSOR=powerpc
+	    fi
+	elif test "$UNAME_PROCESSOR" = i386 ; then
+	    # uname -m returns i386 or x86_64
+	    UNAME_PROCESSOR=$UNAME_MACHINE
+	fi
+	GUESS=$UNAME_PROCESSOR-apple-darwin$UNAME_RELEASE
+	;;
+    *:procnto*:*:* | *:QNX:[0123456789]*:*)
+	UNAME_PROCESSOR=`uname -p`
+	if test "$UNAME_PROCESSOR" = x86; then
+		UNAME_PROCESSOR=i386
+		UNAME_MACHINE=pc
+	fi
+	GUESS=$UNAME_PROCESSOR-$UNAME_MACHINE-nto-qnx$UNAME_RELEASE
+	;;
+    *:QNX:*:4*)
+	GUESS=i386-pc-qnx
+	;;
+    NEO-*:NONSTOP_KERNEL:*:*)
+	GUESS=neo-tandem-nsk$UNAME_RELEASE
+	;;
+    NSE-*:NONSTOP_KERNEL:*:*)
+	GUESS=nse-tandem-nsk$UNAME_RELEASE
+	;;
+    NSR-*:NONSTOP_KERNEL:*:*)
+	GUESS=nsr-tandem-nsk$UNAME_RELEASE
+	;;
+    NSV-*:NONSTOP_KERNEL:*:*)
+	GUESS=nsv-tandem-nsk$UNAME_RELEASE
+	;;
+    NSX-*:NONSTOP_KERNEL:*:*)
+	GUESS=nsx-tandem-nsk$UNAME_RELEASE
+	;;
+    *:NonStop-UX:*:*)
+	GUESS=mips-compaq-nonstopux
+	;;
+    BS2000:POSIX*:*:*)
+	GUESS=bs2000-siemens-sysv
+	;;
+    DS/*:UNIX_System_V:*:*)
+	GUESS=$UNAME_MACHINE-$UNAME_SYSTEM-$UNAME_RELEASE
+	;;
+    *:Plan9:*:*)
+	# "uname -m" is not consistent, so use $cputype instead. 386
+	# is converted to i386 for consistency with other x86
+	# operating systems.
+	if test "${cputype-}" = 386; then
+	    UNAME_MACHINE=i386
+	elif test "x${cputype-}" != x; then
+	    UNAME_MACHINE=$cputype
+	fi
+	GUESS=$UNAME_MACHINE-unknown-plan9
+	;;
+    *:TOPS-10:*:*)
+	GUESS=pdp10-unknown-tops10
+	;;
+    *:TENEX:*:*)
+	GUESS=pdp10-unknown-tenex
+	;;
+    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+	GUESS=pdp10-dec-tops20
+	;;
+    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+	GUESS=pdp10-xkl-tops20
+	;;
+    *:TOPS-20:*:*)
+	GUESS=pdp10-unknown-tops20
+	;;
+    *:ITS:*:*)
+	GUESS=pdp10-unknown-its
+	;;
+    SEI:*:*:SEIUX)
+	GUESS=mips-sei-seiux$UNAME_RELEASE
+	;;
+    *:DragonFly:*:*)
+	DRAGONFLY_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
+	GUESS=$UNAME_MACHINE-unknown-dragonfly$DRAGONFLY_REL
+	;;
+    *:*VMS:*:*)
+	UNAME_MACHINE=`(uname -p) 2>/dev/null`
+	case $UNAME_MACHINE in
+	    A*) GUESS=alpha-dec-vms ;;
+	    I*) GUESS=ia64-dec-vms ;;
+	    V*) GUESS=vax-dec-vms ;;
+	esac ;;
+    *:XENIX:*:SysV)
+	GUESS=i386-pc-xenix
+	;;
+    i*86:skyos:*:*)
+	SKYOS_REL=`echo "$UNAME_RELEASE" | sed -e 's/ .*$//'`
+	GUESS=$UNAME_MACHINE-pc-skyos$SKYOS_REL
+	;;
+    i*86:rdos:*:*)
+	GUESS=$UNAME_MACHINE-pc-rdos
+	;;
+    i*86:Fiwix:*:*)
+	GUESS=$UNAME_MACHINE-pc-fiwix
+	;;
+    *:AROS:*:*)
+	GUESS=$UNAME_MACHINE-unknown-aros
+	;;
+    x86_64:VMkernel:*:*)
+	GUESS=$UNAME_MACHINE-unknown-esx
+	;;
+    amd64:Isilon\ OneFS:*:*)
+	GUESS=x86_64-unknown-onefs
+	;;
+    *:Unleashed:*:*)
+	GUESS=$UNAME_MACHINE-unknown-unleashed$UNAME_RELEASE
+	;;
+esac
+
+# Do we have a guess based on uname results?
+if test "x$GUESS" != x; then
+    echo "$GUESS"
+    exit
+fi
+
+# No uname command or uname output not recognized.
+set_cc_for_build
+cat > "$dummy.c" <<EOF
+#ifdef _SEQUENT_
+#include <sys/types.h>
+#include <sys/utsname.h>
+#endif
+#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
+#if defined (vax) || defined (__vax) || defined (__vax__) || defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
+#include <signal.h>
+#if defined(_SIZE_T_) || defined(SIGLOST)
+#include <sys/utsname.h>
+#endif
+#endif
+#endif
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
+     I don't know....  */
+  printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include <sys/param.h>
+  printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+  "4"
+#else
+  ""
+#endif
+  ); exit (0);
+#endif
+#endif
+
+#if defined (NeXT)
+#if !defined (__ARCHITECTURE__)
+#define __ARCHITECTURE__ "m68k"
+#endif
+  int version;
+  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
+  if (version < 4)
+    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
+  else
+    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
+  exit (0);
+#endif
+
+#if defined (MULTIMAX) || defined (n16)
+#if defined (UMAXV)
+  printf ("ns32k-encore-sysv\n"); exit (0);
+#else
+#if defined (CMU)
+  printf ("ns32k-encore-mach\n"); exit (0);
+#else
+  printf ("ns32k-encore-bsd\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (__386BSD__)
+  printf ("i386-pc-bsd\n"); exit (0);
+#endif
+
+#if defined (sequent)
+#if defined (i386)
+  printf ("i386-sequent-dynix\n"); exit (0);
+#endif
+#if defined (ns32000)
+  printf ("ns32k-sequent-dynix\n"); exit (0);
+#endif
+#endif
+
+#if defined (_SEQUENT_)
+  struct utsname un;
+
+  uname(&un);
+  if (strncmp(un.version, "V2", 2) == 0) {
+    printf ("i386-sequent-ptx2\n"); exit (0);
+  }
+  if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
+    printf ("i386-sequent-ptx1\n"); exit (0);
+  }
+  printf ("i386-sequent-ptx\n"); exit (0);
+#endif
+
+#if defined (vax)
+#if !defined (ultrix)
+#include <sys/param.h>
+#if defined (BSD)
+#if BSD == 43
+  printf ("vax-dec-bsd4.3\n"); exit (0);
+#else
+#if BSD == 199006
+  printf ("vax-dec-bsd4.3reno\n"); exit (0);
+#else
+  printf ("vax-dec-bsd\n"); exit (0);
+#endif
+#endif
+#else
+  printf ("vax-dec-bsd\n"); exit (0);
+#endif
+#else
+#if defined(_SIZE_T_) || defined(SIGLOST)
+  struct utsname un;
+  uname (&un);
+  printf ("vax-dec-ultrix%s\n", un.release); exit (0);
+#else
+  printf ("vax-dec-ultrix\n"); exit (0);
+#endif
+#endif
+#endif
+#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
+#if defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
+#if defined(_SIZE_T_) || defined(SIGLOST)
+  struct utsname *un;
+  uname (&un);
+  printf ("mips-dec-ultrix%s\n", un.release); exit (0);
+#else
+  printf ("mips-dec-ultrix\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (alliant) && defined (i860)
+  printf ("i860-alliant-bsd\n"); exit (0);
+#endif
+
+  exit (1);
+}
+EOF
+
+$CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=`"$dummy"` &&
+	{ echo "$SYSTEM_NAME"; exit; }
+
+# Apollos put the system type in the environment.
+test -d /usr/apollo && { echo "$ISP-apollo-$SYSTYPE"; exit; }
+
+echo "$0: unable to guess system type" >&2
+
+case $UNAME_MACHINE:$UNAME_SYSTEM in
+    mips:Linux | mips64:Linux)
+	# If we got here on MIPS GNU/Linux, output extra information.
+	cat >&2 <<EOF
+
+NOTE: MIPS GNU/Linux systems require a C compiler to fully recognize
+the system type. Please install a C compiler and try again.
+EOF
+	;;
+esac
+
+cat >&2 <<EOF
+
+This script (version $timestamp), has failed to recognize the
+operating system you are using. If your script is old, overwrite *all*
+copies of config.guess and config.sub with the latest versions from:
+
+  https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
+and
+  https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+EOF
+
+our_year=`echo $timestamp | sed 's,-.*,,'`
+thisyear=`date +%Y`
+# shellcheck disable=SC2003
+script_age=`expr "$thisyear" - "$our_year"`
+if test "$script_age" -lt 3 ; then
+   cat >&2 <<EOF
+
+If $0 has already been updated, send the following data and any
+information you think might be pertinent to config-patches@gnu.org to
+provide the necessary information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`
+
+hostinfo               = `(hostinfo) 2>/dev/null`
+/bin/universe          = `(/bin/universe) 2>/dev/null`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
+/bin/arch              = `(/bin/arch) 2>/dev/null`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
+
+UNAME_MACHINE = "$UNAME_MACHINE"
+UNAME_RELEASE = "$UNAME_RELEASE"
+UNAME_SYSTEM  = "$UNAME_SYSTEM"
+UNAME_VERSION = "$UNAME_VERSION"
+EOF
+fi
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/support/config.rpath b/support/config.rpath
new file mode 100755
index 0000000..fc5913d
--- /dev/null
+++ b/support/config.rpath
@@ -0,0 +1,684 @@
+#! /bin/sh
+# Output a system dependent set of variables, describing how to set the
+# run time search path of shared libraries in an executable.
+#
+#   Copyright 1996-2018 Free Software Foundation, Inc.
+#   Taken from GNU libtool, 2001
+#   Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
+#
+#   This file is free software; the Free Software Foundation gives
+#   unlimited permission to copy and/or distribute it, with or without
+#   modifications, as long as this notice is preserved.
+#
+# The first argument passed to this file is the canonical host specification,
+#    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or
+#    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# The environment variables CC, GCC, LDFLAGS, LD, with_gnu_ld
+# should be set by the caller.
+#
+# The set of defined variables is at the end of this script.
+
+# Known limitations:
+# - On IRIX 6.5 with CC="cc", the run time search patch must not be longer
+#   than 256 bytes, otherwise the compiler driver will dump core. The only
+#   known workaround is to choose shorter directory names for the build
+#   directory and/or the installation directory.
+
+# All known linkers require a '.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+shrext=.so
+
+host="$1"
+host_cpu=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+# Code taken from libtool.m4's _LT_CC_BASENAME.
+
+for cc_temp in $CC""; do
+  case $cc_temp in
+    compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
+    distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`echo "$cc_temp" | sed -e 's%^.*/%%'`
+
+# Code taken from libtool.m4's _LT_COMPILER_PIC.
+
+wl=
+if test "$GCC" = yes; then
+  wl='-Wl,'
+else
+  case "$host_os" in
+    aix*)
+      wl='-Wl,'
+      ;;
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      ;;
+    hpux9* | hpux10* | hpux11*)
+      wl='-Wl,'
+      ;;
+    irix5* | irix6* | nonstopux*)
+      wl='-Wl,'
+      ;;
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+        ecc*)
+          wl='-Wl,'
+          ;;
+        icc* | ifort*)
+          wl='-Wl,'
+          ;;
+        lf95*)
+          wl='-Wl,'
+          ;;
+        nagfor*)
+          wl='-Wl,-Wl,,'
+          ;;
+        pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+          wl='-Wl,'
+          ;;
+        ccc*)
+          wl='-Wl,'
+          ;;
+        xl* | bgxl* | bgf* | mpixl*)
+          wl='-Wl,'
+          ;;
+        como)
+          wl='-lopt='
+          ;;
+        *)
+          case `$CC -V 2>&1 | sed 5q` in
+            *Sun\ F* | *Sun*Fortran*)
+              wl=
+              ;;
+            *Sun\ C*)
+              wl='-Wl,'
+              ;;
+          esac
+          ;;
+      esac
+      ;;
+    newsos6)
+      ;;
+    *nto* | *qnx*)
+      ;;
+    osf3* | osf4* | osf5*)
+      wl='-Wl,'
+      ;;
+    rdos*)
+      ;;
+    solaris*)
+      case $cc_basename in
+        f77* | f90* | f95* | sunf77* | sunf90* | sunf95*)
+          wl='-Qoption ld '
+          ;;
+        *)
+          wl='-Wl,'
+          ;;
+      esac
+      ;;
+    sunos4*)
+      wl='-Qoption ld '
+      ;;
+    sysv4 | sysv4.2uw2* | sysv4.3*)
+      wl='-Wl,'
+      ;;
+    sysv4*MP*)
+      ;;
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      wl='-Wl,'
+      ;;
+    unicos*)
+      wl='-Wl,'
+      ;;
+    uts4*)
+      ;;
+  esac
+fi
+
+# Code taken from libtool.m4's _LT_LINKER_SHLIBS.
+
+hardcode_libdir_flag_spec=
+hardcode_libdir_separator=
+hardcode_direct=no
+hardcode_minus_L=no
+
+case "$host_os" in
+  cygwin* | mingw* | pw32* | cegcc*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+esac
+
+ld_shlibs=yes
+if test "$with_gnu_ld" = yes; then
+  # Set some defaults for GNU ld with shared library support. These
+  # are reset later if shared libraries are not supported. Putting them
+  # here allows them to be overridden if necessary.
+  # Unlike libtool, we use -rpath here, not --rpath, since the documented
+  # option of GNU ld is called -rpath, not --rpath.
+  hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+  case "$host_os" in
+    aix[3-9]*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+        ld_shlibs=no
+      fi
+      ;;
+    amigaos*)
+      case "$host_cpu" in
+        powerpc)
+          ;;
+        m68k)
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_minus_L=yes
+          ;;
+      esac
+      ;;
+    beos*)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    cygwin* | mingw* | pw32* | cegcc*)
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec='-L$libdir'
+      if $LD --help 2>&1 | grep 'auto-import' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    haiku*)
+      ;;
+    interix[3-9]*)
+      hardcode_direct=no
+      hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+      ;;
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    netbsd*)
+      ;;
+    solaris*)
+      if $LD -v 2>&1 | grep 'BFD 2\.8' > /dev/null; then
+        ld_shlibs=no
+      elif $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*)
+          ld_shlibs=no
+          ;;
+        *)
+          if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+            hardcode_libdir_flag_spec='`test -z "$SCOABSPATH" && echo ${wl}-rpath,$libdir`'
+          else
+            ld_shlibs=no
+          fi
+          ;;
+      esac
+      ;;
+    sunos4*)
+      hardcode_direct=yes
+      ;;
+    *)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+  esac
+  if test "$ld_shlibs" = no; then
+    hardcode_libdir_flag_spec=
+  fi
+else
+  case "$host_os" in
+    aix3*)
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      hardcode_minus_L=yes
+      if test "$GCC" = yes; then
+        # Neither direct hardcoding nor static linking is supported with a
+        # broken collect2.
+        hardcode_direct=unsupported
+      fi
+      ;;
+    aix[4-9]*)
+      if test "$host_cpu" = ia64; then
+        # On IA64, the linker does run time linking by default, so we don't
+        # have to do anything special.
+        aix_use_runtimelinking=no
+      else
+        aix_use_runtimelinking=no
+        # Test if we are trying to use run time linking or normal
+        # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+        # need to do runtime linking.
+        case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
+          for ld_flag in $LDFLAGS; do
+            if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+              aix_use_runtimelinking=yes
+              break
+            fi
+          done
+          ;;
+        esac
+      fi
+      hardcode_direct=yes
+      hardcode_libdir_separator=':'
+      if test "$GCC" = yes; then
+        case $host_os in aix4.[012]|aix4.[012].*)
+          collect2name=`${CC} -print-prog-name=collect2`
+          if test -f "$collect2name" && \
+            strings "$collect2name" | grep resolve_lib_name >/dev/null
+          then
+            # We have reworked collect2
+            :
+          else
+            # We have old collect2
+            hardcode_direct=unsupported
+            hardcode_minus_L=yes
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_libdir_separator=
+          fi
+          ;;
+        esac
+      fi
+      # Begin _LT_AC_SYS_LIBPATH_AIX.
+      echo 'int main () { return 0; }' > conftest.c
+      ${CC} ${LDFLAGS} conftest.c -o conftest
+      aix_libpath=`dump -H conftest 2>/dev/null | sed -n -e '/Import File Strings/,/^$/ { /^0/ { s/^0  *\(.*\)$/\1/; p; }
+}'`
+      if test -z "$aix_libpath"; then
+        aix_libpath=`dump -HX64 conftest 2>/dev/null | sed -n -e '/Import File Strings/,/^$/ { /^0/ { s/^0  *\(.*\)$/\1/; p; }
+}'`
+      fi
+      if test -z "$aix_libpath"; then
+        aix_libpath="/usr/lib:/lib"
+      fi
+      rm -f conftest.c conftest
+      # End _LT_AC_SYS_LIBPATH_AIX.
+      if test "$aix_use_runtimelinking" = yes; then
+        hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+      else
+        if test "$host_cpu" = ia64; then
+          hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+        else
+          hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+        fi
+      fi
+      ;;
+    amigaos*)
+      case "$host_cpu" in
+        powerpc)
+          ;;
+        m68k)
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_minus_L=yes
+          ;;
+      esac
+      ;;
+    bsdi[45]*)
+      ;;
+    cygwin* | mingw* | pw32* | cegcc*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec=' '
+      libext=lib
+      ;;
+    darwin* | rhapsody*)
+      hardcode_direct=no
+      if { case $cc_basename in ifort*) true;; *) test "$GCC" = yes;; esac; }; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    dgux*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    freebsd2.[01]*)
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    freebsd* | dragonfly*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    hpux9*)
+      hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_direct=yes
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      hardcode_minus_L=yes
+      ;;
+    hpux10*)
+      if test "$with_gnu_ld" = no; then
+        hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+        hardcode_libdir_separator=:
+        hardcode_direct=yes
+        # hardcode_minus_L: Not really in the search PATH,
+        # but as the default location of the library.
+        hardcode_minus_L=yes
+      fi
+      ;;
+    hpux11*)
+      if test "$with_gnu_ld" = no; then
+        hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+        hardcode_libdir_separator=:
+        case $host_cpu in
+          hppa*64*|ia64*)
+            hardcode_direct=no
+            ;;
+          *)
+            hardcode_direct=yes
+            # hardcode_minus_L: Not really in the search PATH,
+            # but as the default location of the library.
+            hardcode_minus_L=yes
+            ;;
+        esac
+      fi
+      ;;
+    irix5* | irix6* | nonstopux*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    netbsd*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    newsos6)
+      hardcode_direct=yes
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    *nto* | *qnx*)
+      ;;
+    openbsd*)
+      if test -f /usr/libexec/ld.so; then
+        hardcode_direct=yes
+        if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+          hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+        else
+          case "$host_os" in
+            openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+              hardcode_libdir_flag_spec='-R$libdir'
+              ;;
+            *)
+              hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+              ;;
+          esac
+        fi
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    os2*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      ;;
+    osf3*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    osf4* | osf5*)
+      if test "$GCC" = yes; then
+        hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      else
+        # Both cc and cxx compiler support -rpath directly
+        hardcode_libdir_flag_spec='-rpath $libdir'
+      fi
+      hardcode_libdir_separator=:
+      ;;
+    solaris*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      ;;
+    sunos4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    sysv4)
+      case $host_vendor in
+        sni)
+          hardcode_direct=yes # is this really true???
+          ;;
+        siemens)
+          hardcode_direct=no
+          ;;
+        motorola)
+          hardcode_direct=no #Motorola manual says yes, but my tests say they lie
+          ;;
+      esac
+      ;;
+    sysv4.3*)
+      ;;
+    sysv4*MP*)
+      if test -d /usr/nec; then
+        ld_shlibs=yes
+      fi
+      ;;
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
+      ;;
+    sysv5* | sco3.2v5* | sco5v6*)
+      hardcode_libdir_flag_spec='`test -z "$SCOABSPATH" && echo ${wl}-R,$libdir`'
+      hardcode_libdir_separator=':'
+      ;;
+    uts4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    *)
+      ld_shlibs=no
+      ;;
+  esac
+fi
+
+# Check dynamic linker characteristics
+# Code taken from libtool.m4's _LT_SYS_DYNAMIC_LINKER.
+# Unlike libtool.m4, here we don't care about _all_ names of the library, but
+# only about the one the linker finds when passed -lNAME. This is the last
+# element of library_names_spec in libtool.m4, or possibly two of them if the
+# linker has special search rules.
+library_names_spec=      # the last element of library_names_spec in libtool.m4
+libname_spec='lib$name'
+case "$host_os" in
+  aix3*)
+    library_names_spec='$libname.a'
+    ;;
+  aix[4-9]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  amigaos*)
+    case "$host_cpu" in
+      powerpc*)
+        library_names_spec='$libname$shrext' ;;
+      m68k)
+        library_names_spec='$libname.a' ;;
+    esac
+    ;;
+  beos*)
+    library_names_spec='$libname$shrext'
+    ;;
+  bsdi[45]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  cygwin* | mingw* | pw32* | cegcc*)
+    shrext=.dll
+    library_names_spec='$libname.dll.a $libname.lib'
+    ;;
+  darwin* | rhapsody*)
+    shrext=.dylib
+    library_names_spec='$libname$shrext'
+    ;;
+  dgux*)
+    library_names_spec='$libname$shrext'
+    ;;
+  freebsd[23].*)
+    library_names_spec='$libname$shrext$versuffix'
+    ;;
+  freebsd* | dragonfly*)
+    library_names_spec='$libname$shrext'
+    ;;
+  gnu*)
+    library_names_spec='$libname$shrext'
+    ;;
+  haiku*)
+    library_names_spec='$libname$shrext'
+    ;;
+  hpux9* | hpux10* | hpux11*)
+    case $host_cpu in
+      ia64*)
+        shrext=.so
+        ;;
+      hppa*64*)
+        shrext=.sl
+        ;;
+      *)
+        shrext=.sl
+        ;;
+    esac
+    library_names_spec='$libname$shrext'
+    ;;
+  interix[3-9]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  irix5* | irix6* | nonstopux*)
+    library_names_spec='$libname$shrext'
+    case "$host_os" in
+      irix5* | nonstopux*)
+        libsuff= shlibsuff=
+        ;;
+      *)
+        case $LD in
+          *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ") libsuff= shlibsuff= ;;
+          *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ") libsuff=32 shlibsuff=N32 ;;
+          *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ") libsuff=64 shlibsuff=64 ;;
+          *) libsuff= shlibsuff= ;;
+        esac
+        ;;
+    esac
+    ;;
+  linux*oldld* | linux*aout* | linux*coff*)
+    ;;
+  linux* | k*bsd*-gnu | kopensolaris*-gnu)
+    library_names_spec='$libname$shrext'
+    ;;
+  knetbsd*-gnu)
+    library_names_spec='$libname$shrext'
+    ;;
+  netbsd*)
+    library_names_spec='$libname$shrext'
+    ;;
+  newsos6)
+    library_names_spec='$libname$shrext'
+    ;;
+  *nto* | *qnx*)
+    library_names_spec='$libname$shrext'
+    ;;
+  openbsd*)
+    library_names_spec='$libname$shrext$versuffix'
+    ;;
+  os2*)
+    libname_spec='$name'
+    shrext=.dll
+    library_names_spec='$libname.a'
+    ;;
+  osf3* | osf4* | osf5*)
+    library_names_spec='$libname$shrext'
+    ;;
+  rdos*)
+    ;;
+  solaris*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sunos4*)
+    library_names_spec='$libname$shrext$versuffix'
+    ;;
+  sysv4 | sysv4.3*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sysv4*MP*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+    library_names_spec='$libname$shrext'
+    ;;
+  tpf*)
+    library_names_spec='$libname$shrext'
+    ;;
+  uts4*)
+    library_names_spec='$libname$shrext'
+    ;;
+esac
+
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+escaped_wl=`echo "X$wl" | sed -e 's/^X//' -e "$sed_quote_subst"`
+shlibext=`echo "$shrext" | sed -e 's,^\.,,'`
+escaped_libname_spec=`echo "X$libname_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_library_names_spec=`echo "X$library_names_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_hardcode_libdir_flag_spec=`echo "X$hardcode_libdir_flag_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+
+LC_ALL=C sed -e 's/^\([a-zA-Z0-9_]*\)=/acl_cv_\1=/' <<EOF
+
+# How to pass a linker flag through the compiler.
+wl="$escaped_wl"
+
+# Static library suffix (normally "a").
+libext="$libext"
+
+# Shared library suffix (normally "so").
+shlibext="$shlibext"
+
+# Format of library name prefix.
+libname_spec="$escaped_libname_spec"
+
+# Library names that the linker finds when passed -lNAME.
+library_names_spec="$escaped_library_names_spec"
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist.
+hardcode_libdir_flag_spec="$escaped_hardcode_libdir_flag_spec"
+
+# Whether we need a single -rpath flag with a separated argument.
+hardcode_libdir_separator="$hardcode_libdir_separator"
+
+# Set to yes if using DIR/libNAME.so during linking hardcodes DIR into the
+# resulting binary.
+hardcode_direct="$hardcode_direct"
+
+# Set to yes if using the -LDIR flag during linking hardcodes DIR into the
+# resulting binary.
+hardcode_minus_L="$hardcode_minus_L"
+
+EOF
diff --git a/support/config.sub b/support/config.sub
new file mode 100644
index 0000000..9b62e37
--- /dev/null
+++ b/support/config.sub
@@ -0,0 +1,1890 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+#   Copyright 1992-2021 Free Software Foundation, Inc.
+
+# shellcheck disable=SC2006,SC2268 # see below for rationale
+
+timestamp='2021-12-25'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+
+
+# Please send patches to <config-patches@gnu.org>.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# You can get the latest version of this script from:
+# https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support.  The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+# The "shellcheck disable" line above the timestamp inhibits complaints
+# about features and limitations of the classic Bourne shell that were
+# superseded or lifted in POSIX.  However, this script identifies a wide
+# variety of pre-POSIX systems that do not have POSIX shells at all, and
+# even some reasonably current systems (Solaris 10 as case-in-point) still
+# have a pre-POSIX /bin/sh.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
+
+Canonicalize a configuration name.
+
+Options:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright 1992-2021 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo "$1"
+       exit ;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
+esac
+
+# Split fields of configuration type
+# shellcheck disable=SC2162
+saved_IFS=$IFS
+IFS="-" read field1 field2 field3 field4 <<EOF
+$1
+EOF
+IFS=$saved_IFS
+
+# Separate into logical components for further validation
+case $1 in
+	*-*-*-*-*)
+		echo Invalid configuration \`"$1"\': more than four components >&2
+		exit 1
+		;;
+	*-*-*-*)
+		basic_machine=$field1-$field2
+		basic_os=$field3-$field4
+		;;
+	*-*-*)
+		# Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two
+		# parts
+		maybe_os=$field2-$field3
+		case $maybe_os in
+			nto-qnx* | linux-* | uclinux-uclibc* \
+			| uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* \
+			| netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
+			| storm-chaos* | os2-emx* | rtmk-nova*)
+				basic_machine=$field1
+				basic_os=$maybe_os
+				;;
+			android-linux)
+				basic_machine=$field1-unknown
+				basic_os=linux-android
+				;;
+			*)
+				basic_machine=$field1-$field2
+				basic_os=$field3
+				;;
+		esac
+		;;
+	*-*)
+		# A lone config we happen to match not fitting any pattern
+		case $field1-$field2 in
+			decstation-3100)
+				basic_machine=mips-dec
+				basic_os=
+				;;
+			*-*)
+				# Second component is usually, but not always the OS
+				case $field2 in
+					# Prevent following clause from handling this valid os
+					sun*os*)
+						basic_machine=$field1
+						basic_os=$field2
+						;;
+					zephyr*)
+						basic_machine=$field1-unknown
+						basic_os=$field2
+						;;
+					# Manufacturers
+					dec* | mips* | sequent* | encore* | pc533* | sgi* | sony* \
+					| att* | 7300* | 3300* | delta* | motorola* | sun[234]* \
+					| unicom* | ibm* | next | hp | isi* | apollo | altos* \
+					| convergent* | ncr* | news | 32* | 3600* | 3100* \
+					| hitachi* | c[123]* | convex* | sun | crds | omron* | dg \
+					| ultra | tti* | harris | dolphin | highlevel | gould \
+					| cbm | ns | masscomp | apple | axis | knuth | cray \
+					| microblaze* | sim | cisco \
+					| oki | wec | wrs | winbond)
+						basic_machine=$field1-$field2
+						basic_os=
+						;;
+					*)
+						basic_machine=$field1
+						basic_os=$field2
+						;;
+				esac
+			;;
+		esac
+		;;
+	*)
+		# Convert single-component short-hands not valid as part of
+		# multi-component configurations.
+		case $field1 in
+			386bsd)
+				basic_machine=i386-pc
+				basic_os=bsd
+				;;
+			a29khif)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			adobe68k)
+				basic_machine=m68010-adobe
+				basic_os=scout
+				;;
+			alliant)
+				basic_machine=fx80-alliant
+				basic_os=
+				;;
+			altos | altos3068)
+				basic_machine=m68k-altos
+				basic_os=
+				;;
+			am29k)
+				basic_machine=a29k-none
+				basic_os=bsd
+				;;
+			amdahl)
+				basic_machine=580-amdahl
+				basic_os=sysv
+				;;
+			amiga)
+				basic_machine=m68k-unknown
+				basic_os=
+				;;
+			amigaos | amigados)
+				basic_machine=m68k-unknown
+				basic_os=amigaos
+				;;
+			amigaunix | amix)
+				basic_machine=m68k-unknown
+				basic_os=sysv4
+				;;
+			apollo68)
+				basic_machine=m68k-apollo
+				basic_os=sysv
+				;;
+			apollo68bsd)
+				basic_machine=m68k-apollo
+				basic_os=bsd
+				;;
+			aros)
+				basic_machine=i386-pc
+				basic_os=aros
+				;;
+			aux)
+				basic_machine=m68k-apple
+				basic_os=aux
+				;;
+			balance)
+				basic_machine=ns32k-sequent
+				basic_os=dynix
+				;;
+			blackfin)
+				basic_machine=bfin-unknown
+				basic_os=linux
+				;;
+			cegcc)
+				basic_machine=arm-unknown
+				basic_os=cegcc
+				;;
+			convex-c1)
+				basic_machine=c1-convex
+				basic_os=bsd
+				;;
+			convex-c2)
+				basic_machine=c2-convex
+				basic_os=bsd
+				;;
+			convex-c32)
+				basic_machine=c32-convex
+				basic_os=bsd
+				;;
+			convex-c34)
+				basic_machine=c34-convex
+				basic_os=bsd
+				;;
+			convex-c38)
+				basic_machine=c38-convex
+				basic_os=bsd
+				;;
+			cray)
+				basic_machine=j90-cray
+				basic_os=unicos
+				;;
+			crds | unos)
+				basic_machine=m68k-crds
+				basic_os=
+				;;
+			da30)
+				basic_machine=m68k-da30
+				basic_os=
+				;;
+			decstation | pmax | pmin | dec3100 | decstatn)
+				basic_machine=mips-dec
+				basic_os=
+				;;
+			delta88)
+				basic_machine=m88k-motorola
+				basic_os=sysv3
+				;;
+			dicos)
+				basic_machine=i686-pc
+				basic_os=dicos
+				;;
+			djgpp)
+				basic_machine=i586-pc
+				basic_os=msdosdjgpp
+				;;
+			ebmon29k)
+				basic_machine=a29k-amd
+				basic_os=ebmon
+				;;
+			es1800 | OSE68k | ose68k | ose | OSE)
+				basic_machine=m68k-ericsson
+				basic_os=ose
+				;;
+			gmicro)
+				basic_machine=tron-gmicro
+				basic_os=sysv
+				;;
+			go32)
+				basic_machine=i386-pc
+				basic_os=go32
+				;;
+			h8300hms)
+				basic_machine=h8300-hitachi
+				basic_os=hms
+				;;
+			h8300xray)
+				basic_machine=h8300-hitachi
+				basic_os=xray
+				;;
+			h8500hms)
+				basic_machine=h8500-hitachi
+				basic_os=hms
+				;;
+			harris)
+				basic_machine=m88k-harris
+				basic_os=sysv3
+				;;
+			hp300 | hp300hpux)
+				basic_machine=m68k-hp
+				basic_os=hpux
+				;;
+			hp300bsd)
+				basic_machine=m68k-hp
+				basic_os=bsd
+				;;
+			hppaosf)
+				basic_machine=hppa1.1-hp
+				basic_os=osf
+				;;
+			hppro)
+				basic_machine=hppa1.1-hp
+				basic_os=proelf
+				;;
+			i386mach)
+				basic_machine=i386-mach
+				basic_os=mach
+				;;
+			isi68 | isi)
+				basic_machine=m68k-isi
+				basic_os=sysv
+				;;
+			m68knommu)
+				basic_machine=m68k-unknown
+				basic_os=linux
+				;;
+			magnum | m3230)
+				basic_machine=mips-mips
+				basic_os=sysv
+				;;
+			merlin)
+				basic_machine=ns32k-utek
+				basic_os=sysv
+				;;
+			mingw64)
+				basic_machine=x86_64-pc
+				basic_os=mingw64
+				;;
+			mingw32)
+				basic_machine=i686-pc
+				basic_os=mingw32
+				;;
+			mingw32ce)
+				basic_machine=arm-unknown
+				basic_os=mingw32ce
+				;;
+			monitor)
+				basic_machine=m68k-rom68k
+				basic_os=coff
+				;;
+			morphos)
+				basic_machine=powerpc-unknown
+				basic_os=morphos
+				;;
+			moxiebox)
+				basic_machine=moxie-unknown
+				basic_os=moxiebox
+				;;
+			msdos)
+				basic_machine=i386-pc
+				basic_os=msdos
+				;;
+			msys)
+				basic_machine=i686-pc
+				basic_os=msys
+				;;
+			mvs)
+				basic_machine=i370-ibm
+				basic_os=mvs
+				;;
+			nacl)
+				basic_machine=le32-unknown
+				basic_os=nacl
+				;;
+			ncr3000)
+				basic_machine=i486-ncr
+				basic_os=sysv4
+				;;
+			netbsd386)
+				basic_machine=i386-pc
+				basic_os=netbsd
+				;;
+			netwinder)
+				basic_machine=armv4l-rebel
+				basic_os=linux
+				;;
+			news | news700 | news800 | news900)
+				basic_machine=m68k-sony
+				basic_os=newsos
+				;;
+			news1000)
+				basic_machine=m68030-sony
+				basic_os=newsos
+				;;
+			necv70)
+				basic_machine=v70-nec
+				basic_os=sysv
+				;;
+			nh3000)
+				basic_machine=m68k-harris
+				basic_os=cxux
+				;;
+			nh[45]000)
+				basic_machine=m88k-harris
+				basic_os=cxux
+				;;
+			nindy960)
+				basic_machine=i960-intel
+				basic_os=nindy
+				;;
+			mon960)
+				basic_machine=i960-intel
+				basic_os=mon960
+				;;
+			nonstopux)
+				basic_machine=mips-compaq
+				basic_os=nonstopux
+				;;
+			os400)
+				basic_machine=powerpc-ibm
+				basic_os=os400
+				;;
+			OSE68000 | ose68000)
+				basic_machine=m68000-ericsson
+				basic_os=ose
+				;;
+			os68k)
+				basic_machine=m68k-none
+				basic_os=os68k
+				;;
+			paragon)
+				basic_machine=i860-intel
+				basic_os=osf
+				;;
+			parisc)
+				basic_machine=hppa-unknown
+				basic_os=linux
+				;;
+			psp)
+				basic_machine=mipsallegrexel-sony
+				basic_os=psp
+				;;
+			pw32)
+				basic_machine=i586-unknown
+				basic_os=pw32
+				;;
+			rdos | rdos64)
+				basic_machine=x86_64-pc
+				basic_os=rdos
+				;;
+			rdos32)
+				basic_machine=i386-pc
+				basic_os=rdos
+				;;
+			rom68k)
+				basic_machine=m68k-rom68k
+				basic_os=coff
+				;;
+			sa29200)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			sei)
+				basic_machine=mips-sei
+				basic_os=seiux
+				;;
+			sequent)
+				basic_machine=i386-sequent
+				basic_os=
+				;;
+			sps7)
+				basic_machine=m68k-bull
+				basic_os=sysv2
+				;;
+			st2000)
+				basic_machine=m68k-tandem
+				basic_os=
+				;;
+			stratus)
+				basic_machine=i860-stratus
+				basic_os=sysv4
+				;;
+			sun2)
+				basic_machine=m68000-sun
+				basic_os=
+				;;
+			sun2os3)
+				basic_machine=m68000-sun
+				basic_os=sunos3
+				;;
+			sun2os4)
+				basic_machine=m68000-sun
+				basic_os=sunos4
+				;;
+			sun3)
+				basic_machine=m68k-sun
+				basic_os=
+				;;
+			sun3os3)
+				basic_machine=m68k-sun
+				basic_os=sunos3
+				;;
+			sun3os4)
+				basic_machine=m68k-sun
+				basic_os=sunos4
+				;;
+			sun4)
+				basic_machine=sparc-sun
+				basic_os=
+				;;
+			sun4os3)
+				basic_machine=sparc-sun
+				basic_os=sunos3
+				;;
+			sun4os4)
+				basic_machine=sparc-sun
+				basic_os=sunos4
+				;;
+			sun4sol2)
+				basic_machine=sparc-sun
+				basic_os=solaris2
+				;;
+			sun386 | sun386i | roadrunner)
+				basic_machine=i386-sun
+				basic_os=
+				;;
+			sv1)
+				basic_machine=sv1-cray
+				basic_os=unicos
+				;;
+			symmetry)
+				basic_machine=i386-sequent
+				basic_os=dynix
+				;;
+			t3e)
+				basic_machine=alphaev5-cray
+				basic_os=unicos
+				;;
+			t90)
+				basic_machine=t90-cray
+				basic_os=unicos
+				;;
+			toad1)
+				basic_machine=pdp10-xkl
+				basic_os=tops20
+				;;
+			tpf)
+				basic_machine=s390x-ibm
+				basic_os=tpf
+				;;
+			udi29k)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			ultra3)
+				basic_machine=a29k-nyu
+				basic_os=sym1
+				;;
+			v810 | necv810)
+				basic_machine=v810-nec
+				basic_os=none
+				;;
+			vaxv)
+				basic_machine=vax-dec
+				basic_os=sysv
+				;;
+			vms)
+				basic_machine=vax-dec
+				basic_os=vms
+				;;
+			vsta)
+				basic_machine=i386-pc
+				basic_os=vsta
+				;;
+			vxworks960)
+				basic_machine=i960-wrs
+				basic_os=vxworks
+				;;
+			vxworks68)
+				basic_machine=m68k-wrs
+				basic_os=vxworks
+				;;
+			vxworks29k)
+				basic_machine=a29k-wrs
+				basic_os=vxworks
+				;;
+			xbox)
+				basic_machine=i686-pc
+				basic_os=mingw32
+				;;
+			ymp)
+				basic_machine=ymp-cray
+				basic_os=unicos
+				;;
+			*)
+				basic_machine=$1
+				basic_os=
+				;;
+		esac
+		;;
+esac
+
+# Decode 1-component or ad-hoc basic machines
+case $basic_machine in
+	# Here we handle the default manufacturer of certain CPU types.  It is in
+	# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		cpu=hppa1.1
+		vendor=winbond
+		;;
+	op50n)
+		cpu=hppa1.1
+		vendor=oki
+		;;
+	op60c)
+		cpu=hppa1.1
+		vendor=oki
+		;;
+	ibm*)
+		cpu=i370
+		vendor=ibm
+		;;
+	orion105)
+		cpu=clipper
+		vendor=highlevel
+		;;
+	mac | mpw | mac-mpw)
+		cpu=m68k
+		vendor=apple
+		;;
+	pmac | pmac-mpw)
+		cpu=powerpc
+		vendor=apple
+		;;
+
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		cpu=m68000
+		vendor=att
+		;;
+	3b*)
+		cpu=we32k
+		vendor=att
+		;;
+	bluegene*)
+		cpu=powerpc
+		vendor=ibm
+		basic_os=cnk
+		;;
+	decsystem10* | dec10*)
+		cpu=pdp10
+		vendor=dec
+		basic_os=tops10
+		;;
+	decsystem20* | dec20*)
+		cpu=pdp10
+		vendor=dec
+		basic_os=tops20
+		;;
+	delta | 3300 | motorola-3300 | motorola-delta \
+	      | 3300-motorola | delta-motorola)
+		cpu=m68k
+		vendor=motorola
+		;;
+	dpx2*)
+		cpu=m68k
+		vendor=bull
+		basic_os=sysv3
+		;;
+	encore | umax | mmax)
+		cpu=ns32k
+		vendor=encore
+		;;
+	elxsi)
+		cpu=elxsi
+		vendor=elxsi
+		basic_os=${basic_os:-bsd}
+		;;
+	fx2800)
+		cpu=i860
+		vendor=alliant
+		;;
+	genix)
+		cpu=ns32k
+		vendor=ns
+		;;
+	h3050r* | hiux*)
+		cpu=hppa1.1
+		vendor=hitachi
+		basic_os=hiuxwe2
+		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		cpu=m68000
+		vendor=hp
+		;;
+	hp9k3[2-9][0-9])
+		cpu=m68k
+		vendor=hp
+		;;
+	hp9k6[0-9][0-9] | hp6[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	hp9k7[0-79][0-9] | hp7[0-79][0-9])
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k78[0-9] | hp78[0-9])
+		# FIXME: really hppa2.0-hp
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+		# FIXME: really hppa2.0-hp
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[0-9][13679] | hp8[0-9][13679])
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	i*86v32)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv32
+		;;
+	i*86v4*)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv4
+		;;
+	i*86v)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv
+		;;
+	i*86sol2)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=solaris2
+		;;
+	j90 | j90-cray)
+		cpu=j90
+		vendor=cray
+		basic_os=${basic_os:-unicos}
+		;;
+	iris | iris4d)
+		cpu=mips
+		vendor=sgi
+		case $basic_os in
+		    irix*)
+			;;
+		    *)
+			basic_os=irix4
+			;;
+		esac
+		;;
+	miniframe)
+		cpu=m68000
+		vendor=convergent
+		;;
+	*mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		cpu=m68k
+		vendor=atari
+		basic_os=mint
+		;;
+	news-3600 | risc-news)
+		cpu=mips
+		vendor=sony
+		basic_os=newsos
+		;;
+	next | m*-next)
+		cpu=m68k
+		vendor=next
+		case $basic_os in
+		    openstep*)
+		        ;;
+		    nextstep*)
+			;;
+		    ns2*)
+		      basic_os=nextstep2
+			;;
+		    *)
+		      basic_os=nextstep3
+			;;
+		esac
+		;;
+	np1)
+		cpu=np1
+		vendor=gould
+		;;
+	op50n-* | op60c-*)
+		cpu=hppa1.1
+		vendor=oki
+		basic_os=proelf
+		;;
+	pa-hitachi)
+		cpu=hppa1.1
+		vendor=hitachi
+		basic_os=hiuxwe2
+		;;
+	pbd)
+		cpu=sparc
+		vendor=tti
+		;;
+	pbb)
+		cpu=m68k
+		vendor=tti
+		;;
+	pc532)
+		cpu=ns32k
+		vendor=pc532
+		;;
+	pn)
+		cpu=pn
+		vendor=gould
+		;;
+	power)
+		cpu=power
+		vendor=ibm
+		;;
+	ps2)
+		cpu=i386
+		vendor=ibm
+		;;
+	rm[46]00)
+		cpu=mips
+		vendor=siemens
+		;;
+	rtpc | rtpc-*)
+		cpu=romp
+		vendor=ibm
+		;;
+	sde)
+		cpu=mipsisa32
+		vendor=sde
+		basic_os=${basic_os:-elf}
+		;;
+	simso-wrs)
+		cpu=sparclite
+		vendor=wrs
+		basic_os=vxworks
+		;;
+	tower | tower-32)
+		cpu=m68k
+		vendor=ncr
+		;;
+	vpp*|vx|vx-*)
+		cpu=f301
+		vendor=fujitsu
+		;;
+	w65)
+		cpu=w65
+		vendor=wdc
+		;;
+	w89k-*)
+		cpu=hppa1.1
+		vendor=winbond
+		basic_os=proelf
+		;;
+	none)
+		cpu=none
+		vendor=none
+		;;
+	leon|leon[3-9])
+		cpu=sparc
+		vendor=$basic_machine
+		;;
+	leon-*|leon[3-9]-*)
+		cpu=sparc
+		vendor=`echo "$basic_machine" | sed 's/-.*//'`
+		;;
+
+	*-*)
+		# shellcheck disable=SC2162
+		saved_IFS=$IFS
+		IFS="-" read cpu vendor <<EOF
+$basic_machine
+EOF
+		IFS=$saved_IFS
+		;;
+	# We use `pc' rather than `unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+		cpu=$basic_machine
+		vendor=pc
+		;;
+	# These rules are duplicated from below for sake of the special case above;
+	# i.e. things that normalized to x86 arches should also default to "pc"
+	pc98)
+		cpu=i386
+		vendor=pc
+		;;
+	x64 | amd64)
+		cpu=x86_64
+		vendor=pc
+		;;
+	# Recognize the basic CPU types without company name.
+	*)
+		cpu=$basic_machine
+		vendor=unknown
+		;;
+esac
+
+unset -v basic_machine
+
+# Decode basic machines in the full and proper CPU-Company form.
+case $cpu-$vendor in
+	# Here we handle the default manufacturer of certain CPU types in canonical form. It is in
+	# some cases the only manufacturer, in others, it is the most popular.
+	craynv-unknown)
+		vendor=cray
+		basic_os=${basic_os:-unicosmp}
+		;;
+	c90-unknown | c90-cray)
+		vendor=cray
+		basic_os=${Basic_os:-unicos}
+		;;
+	fx80-unknown)
+		vendor=alliant
+		;;
+	romp-unknown)
+		vendor=ibm
+		;;
+	mmix-unknown)
+		vendor=knuth
+		;;
+	microblaze-unknown | microblazeel-unknown)
+		vendor=xilinx
+		;;
+	rs6000-unknown)
+		vendor=ibm
+		;;
+	vax-unknown)
+		vendor=dec
+		;;
+	pdp11-unknown)
+		vendor=dec
+		;;
+	we32k-unknown)
+		vendor=att
+		;;
+	cydra-unknown)
+		vendor=cydrome
+		;;
+	i370-ibm*)
+		vendor=ibm
+		;;
+	orion-unknown)
+		vendor=highlevel
+		;;
+	xps-unknown | xps100-unknown)
+		cpu=xps100
+		vendor=honeywell
+		;;
+
+	# Here we normalize CPU types with a missing or matching vendor
+	armh-unknown | armh-alt)
+		cpu=armv7l
+		vendor=alt
+		basic_os=${basic_os:-linux-gnueabihf}
+		;;
+	dpx20-unknown | dpx20-bull)
+		cpu=rs6000
+		vendor=bull
+		basic_os=${basic_os:-bosx}
+		;;
+
+	# Here we normalize CPU types irrespective of the vendor
+	amd64-*)
+		cpu=x86_64
+		;;
+	blackfin-*)
+		cpu=bfin
+		basic_os=linux
+		;;
+	c54x-*)
+		cpu=tic54x
+		;;
+	c55x-*)
+		cpu=tic55x
+		;;
+	c6x-*)
+		cpu=tic6x
+		;;
+	e500v[12]-*)
+		cpu=powerpc
+		basic_os=${basic_os}"spe"
+		;;
+	mips3*-*)
+		cpu=mips64
+		;;
+	ms1-*)
+		cpu=mt
+		;;
+	m68knommu-*)
+		cpu=m68k
+		basic_os=linux
+		;;
+	m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
+		cpu=s12z
+		;;
+	openrisc-*)
+		cpu=or32
+		;;
+	parisc-*)
+		cpu=hppa
+		basic_os=linux
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		cpu=i586
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-* | athalon_*-*)
+		cpu=i686
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		cpu=i686
+		;;
+	pentium4-*)
+		cpu=i786
+		;;
+	pc98-*)
+		cpu=i386
+		;;
+	ppc-* | ppcbe-*)
+		cpu=powerpc
+		;;
+	ppcle-* | powerpclittle-*)
+		cpu=powerpcle
+		;;
+	ppc64-*)
+		cpu=powerpc64
+		;;
+	ppc64le-* | powerpc64little-*)
+		cpu=powerpc64le
+		;;
+	sb1-*)
+		cpu=mipsisa64sb1
+		;;
+	sb1el-*)
+		cpu=mipsisa64sb1el
+		;;
+	sh5e[lb]-*)
+		cpu=`echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/'`
+		;;
+	spur-*)
+		cpu=spur
+		;;
+	strongarm-* | thumb-*)
+		cpu=arm
+		;;
+	tx39-*)
+		cpu=mipstx39
+		;;
+	tx39el-*)
+		cpu=mipstx39el
+		;;
+	x64-*)
+		cpu=x86_64
+		;;
+	xscale-* | xscalee[bl]-*)
+		cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
+		;;
+	arm64-* | aarch64le-*)
+		cpu=aarch64
+		;;
+
+	# Recognize the canonical CPU Types that limit and/or modify the
+	# company names they are paired with.
+	cr16-*)
+		basic_os=${basic_os:-elf}
+		;;
+	crisv32-* | etraxfs*-*)
+		cpu=crisv32
+		vendor=axis
+		;;
+	cris-* | etrax*-*)
+		cpu=cris
+		vendor=axis
+		;;
+	crx-*)
+		basic_os=${basic_os:-elf}
+		;;
+	neo-tandem)
+		cpu=neo
+		vendor=tandem
+		;;
+	nse-tandem)
+		cpu=nse
+		vendor=tandem
+		;;
+	nsr-tandem)
+		cpu=nsr
+		vendor=tandem
+		;;
+	nsv-tandem)
+		cpu=nsv
+		vendor=tandem
+		;;
+	nsx-tandem)
+		cpu=nsx
+		vendor=tandem
+		;;
+	mipsallegrexel-sony)
+		cpu=mipsallegrexel
+		vendor=sony
+		;;
+	tile*-*)
+		basic_os=${basic_os:-linux-gnu}
+		;;
+
+	*)
+		# Recognize the canonical CPU types that are allowed with any
+		# company name.
+		case $cpu in
+			1750a | 580 \
+			| a29k \
+			| aarch64 | aarch64_be \
+			| abacus \
+			| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] \
+			| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] \
+			| alphapca5[67] | alpha64pca5[67] \
+			| am33_2.0 \
+			| amdgcn \
+			| arc | arceb | arc32 | arc64 \
+			| arm | arm[lb]e | arme[lb] | armv* \
+			| avr | avr32 \
+			| asmjs \
+			| ba \
+			| be32 | be64 \
+			| bfin | bpf | bs2000 \
+			| c[123]* | c30 | [cjt]90 | c4x \
+			| c8051 | clipper | craynv | csky | cydra \
+			| d10v | d30v | dlx | dsp16xx \
+			| e2k | elxsi | epiphany \
+			| f30[01] | f700 | fido | fr30 | frv | ft32 | fx80 \
+			| h8300 | h8500 \
+			| hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+			| hexagon \
+			| i370 | i*86 | i860 | i960 | ia16 | ia64 \
+			| ip2k | iq2000 \
+			| k1om \
+			| le32 | le64 \
+			| lm32 \
+			| loongarch32 | loongarch64 | loongarchx32 \
+			| m32c | m32r | m32rle \
+			| m5200 | m68000 | m680[012346]0 | m68360 | m683?2 | m68k \
+			| m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x \
+			| m88110 | m88k | maxq | mb | mcore | mep | metag \
+			| microblaze | microblazeel \
+			| mips | mipsbe | mipseb | mipsel | mipsle \
+			| mips16 \
+			| mips64 | mips64eb | mips64el \
+			| mips64octeon | mips64octeonel \
+			| mips64orion | mips64orionel \
+			| mips64r5900 | mips64r5900el \
+			| mips64vr | mips64vrel \
+			| mips64vr4100 | mips64vr4100el \
+			| mips64vr4300 | mips64vr4300el \
+			| mips64vr5000 | mips64vr5000el \
+			| mips64vr5900 | mips64vr5900el \
+			| mipsisa32 | mipsisa32el \
+			| mipsisa32r2 | mipsisa32r2el \
+			| mipsisa32r3 | mipsisa32r3el \
+			| mipsisa32r5 | mipsisa32r5el \
+			| mipsisa32r6 | mipsisa32r6el \
+			| mipsisa64 | mipsisa64el \
+			| mipsisa64r2 | mipsisa64r2el \
+			| mipsisa64r3 | mipsisa64r3el \
+			| mipsisa64r5 | mipsisa64r5el \
+			| mipsisa64r6 | mipsisa64r6el \
+			| mipsisa64sb1 | mipsisa64sb1el \
+			| mipsisa64sr71k | mipsisa64sr71kel \
+			| mipsr5900 | mipsr5900el \
+			| mipstx39 | mipstx39el \
+			| mmix \
+			| mn10200 | mn10300 \
+			| moxie \
+			| mt \
+			| msp430 \
+			| nds32 | nds32le | nds32be \
+			| nfp \
+			| nios | nios2 | nios2eb | nios2el \
+			| none | np1 | ns16k | ns32k | nvptx \
+			| open8 \
+			| or1k* \
+			| or32 \
+			| orion \
+			| picochip \
+			| pdp10 | pdp11 | pj | pjl | pn | power \
+			| powerpc | powerpc64 | powerpc64le | powerpcle | powerpcspe \
+			| pru \
+			| pyramid \
+			| riscv | riscv32 | riscv32be | riscv64 | riscv64be \
+			| rl78 | romp | rs6000 | rx \
+			| s390 | s390x \
+			| score \
+			| sh | shl \
+			| sh[1234] | sh[24]a | sh[24]ae[lb] | sh[23]e | she[lb] | sh[lb]e \
+			| sh[1234]e[lb] |  sh[12345][lb]e | sh[23]ele | sh64 | sh64le \
+			| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet \
+			| sparclite \
+			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
+			| spu \
+			| tahoe \
+			| thumbv7* \
+			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
+			| tron \
+			| ubicom32 \
+			| v70 | v850 | v850e | v850e1 | v850es | v850e2 | v850e2v3 \
+			| vax \
+			| visium \
+			| w65 \
+			| wasm32 | wasm64 \
+			| we32k \
+			| x86 | x86_64 | xc16x | xgate | xps100 \
+			| xstormy16 | xtensa* \
+			| ymp \
+			| z8k | z80)
+				;;
+
+			*)
+				echo Invalid configuration \`"$1"\': machine \`"$cpu-$vendor"\' not recognized 1>&2
+				exit 1
+				;;
+		esac
+		;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $vendor in
+	digital*)
+		vendor=dec
+		;;
+	commodore*)
+		vendor=cbm
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if test x$basic_os != x
+then
+
+# First recognize some ad-hoc cases, or perhaps split kernel-os, or else just
+# set os.
+case $basic_os in
+	gnu/linux*)
+		kernel=linux
+		os=`echo "$basic_os" | sed -e 's|gnu/linux|gnu|'`
+		;;
+	os2-emx)
+		kernel=os2
+		os=`echo "$basic_os" | sed -e 's|os2-emx|emx|'`
+		;;
+	nto-qnx*)
+		kernel=nto
+		os=`echo "$basic_os" | sed -e 's|nto-qnx|qnx|'`
+		;;
+	*-*)
+		# shellcheck disable=SC2162
+		saved_IFS=$IFS
+		IFS="-" read kernel os <<EOF
+$basic_os
+EOF
+		IFS=$saved_IFS
+		;;
+	# Default OS when just kernel was specified
+	nto*)
+		kernel=nto
+		os=`echo "$basic_os" | sed -e 's|nto|qnx|'`
+		;;
+	linux*)
+		kernel=linux
+		os=`echo "$basic_os" | sed -e 's|linux|gnu|'`
+		;;
+	*)
+		kernel=
+		os=$basic_os
+		;;
+esac
+
+# Now, normalize the OS (knowing we just have one component, it's not a kernel,
+# etc.)
+case $os in
+	# First match some system type aliases that might get confused
+	# with valid system types.
+	# solaris* is a basic system type, with this one exception.
+	auroraux)
+		os=auroraux
+		;;
+	bluegene*)
+		os=cnk
+		;;
+	solaris1 | solaris1.*)
+		os=`echo "$os" | sed -e 's|solaris1|sunos4|'`
+		;;
+	solaris)
+		os=solaris2
+		;;
+	unixware*)
+		os=sysv4.2uw
+		;;
+	# es1800 is here to avoid being matched by es* (a different OS)
+	es1800*)
+		os=ose
+		;;
+	# Some version numbers need modification
+	chorusos*)
+		os=chorusos
+		;;
+	isc)
+		os=isc2.2
+		;;
+	sco6)
+		os=sco5v6
+		;;
+	sco5)
+		os=sco3.2v5
+		;;
+	sco4)
+		os=sco3.2v4
+		;;
+	sco3.2.[4-9]*)
+		os=`echo "$os" | sed -e 's/sco3.2./sco3.2v/'`
+		;;
+	sco*v* | scout)
+		# Don't match below
+		;;
+	sco*)
+		os=sco3.2v2
+		;;
+	psos*)
+		os=psos
+		;;
+	qnx*)
+		os=qnx
+		;;
+	hiux*)
+		os=hiuxwe2
+		;;
+	lynx*178)
+		os=lynxos178
+		;;
+	lynx*5)
+		os=lynxos5
+		;;
+	lynxos*)
+		# don't get caught up in next wildcard
+		;;
+	lynx*)
+		os=lynxos
+		;;
+	mac[0-9]*)
+		os=`echo "$os" | sed -e 's|mac|macos|'`
+		;;
+	opened*)
+		os=openedition
+		;;
+	os400*)
+		os=os400
+		;;
+	sunos5*)
+		os=`echo "$os" | sed -e 's|sunos5|solaris2|'`
+		;;
+	sunos6*)
+		os=`echo "$os" | sed -e 's|sunos6|solaris3|'`
+		;;
+	wince*)
+		os=wince
+		;;
+	utek*)
+		os=bsd
+		;;
+	dynix*)
+		os=bsd
+		;;
+	acis*)
+		os=aos
+		;;
+	atheos*)
+		os=atheos
+		;;
+	syllable*)
+		os=syllable
+		;;
+	386bsd)
+		os=bsd
+		;;
+	ctix* | uts*)
+		os=sysv
+		;;
+	nova*)
+		os=rtmk-nova
+		;;
+	ns2)
+		os=nextstep2
+		;;
+	# Preserve the version number of sinix5.
+	sinix5.*)
+		os=`echo "$os" | sed -e 's|sinix|sysv|'`
+		;;
+	sinix*)
+		os=sysv4
+		;;
+	tpf*)
+		os=tpf
+		;;
+	triton*)
+		os=sysv3
+		;;
+	oss*)
+		os=sysv3
+		;;
+	svr4*)
+		os=sysv4
+		;;
+	svr3)
+		os=sysv3
+		;;
+	sysvr4)
+		os=sysv4
+		;;
+	ose*)
+		os=ose
+		;;
+	*mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
+		os=mint
+		;;
+	dicos*)
+		os=dicos
+		;;
+	pikeos*)
+		# Until real need of OS specific support for
+		# particular features comes up, bare metal
+		# configurations are quite functional.
+		case $cpu in
+		    arm*)
+			os=eabi
+			;;
+		    *)
+			os=elf
+			;;
+		esac
+		;;
+	*)
+		# No normalization, but not necessarily accepted, that comes below.
+		;;
+esac
+
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system.  Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+kernel=
+case $cpu-$vendor in
+	score-*)
+		os=elf
+		;;
+	spu-*)
+		os=elf
+		;;
+	*-acorn)
+		os=riscix1.2
+		;;
+	arm*-rebel)
+		kernel=linux
+		os=gnu
+		;;
+	arm*-semi)
+		os=aout
+		;;
+	c4x-* | tic4x-*)
+		os=coff
+		;;
+	c8051-*)
+		os=elf
+		;;
+	clipper-intergraph)
+		os=clix
+		;;
+	hexagon-*)
+		os=elf
+		;;
+	tic54x-*)
+		os=coff
+		;;
+	tic55x-*)
+		os=coff
+		;;
+	tic6x-*)
+		os=coff
+		;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=tops20
+		;;
+	pdp11-*)
+		os=none
+		;;
+	*-dec | vax-*)
+		os=ultrix4.2
+		;;
+	m68*-apollo)
+		os=domain
+		;;
+	i386-sun)
+		os=sunos4.0.2
+		;;
+	m68000-sun)
+		os=sunos3
+		;;
+	m68*-cisco)
+		os=aout
+		;;
+	mep-*)
+		os=elf
+		;;
+	mips*-cisco)
+		os=elf
+		;;
+	mips*-*)
+		os=elf
+		;;
+	or32-*)
+		os=coff
+		;;
+	*-tti)	# must be before sparc entry or we get the wrong os.
+		os=sysv3
+		;;
+	sparc-* | *-sun)
+		os=sunos4.1.1
+		;;
+	pru-*)
+		os=elf
+		;;
+	*-be)
+		os=beos
+		;;
+	*-ibm)
+		os=aix
+		;;
+	*-knuth)
+		os=mmixware
+		;;
+	*-wec)
+		os=proelf
+		;;
+	*-winbond)
+		os=proelf
+		;;
+	*-oki)
+		os=proelf
+		;;
+	*-hp)
+		os=hpux
+		;;
+	*-hitachi)
+		os=hiux
+		;;
+	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+		os=sysv
+		;;
+	*-cbm)
+		os=amigaos
+		;;
+	*-dg)
+		os=dgux
+		;;
+	*-dolphin)
+		os=sysv3
+		;;
+	m68k-ccur)
+		os=rtu
+		;;
+	m88k-omron*)
+		os=luna
+		;;
+	*-next)
+		os=nextstep
+		;;
+	*-sequent)
+		os=ptx
+		;;
+	*-crds)
+		os=unos
+		;;
+	*-ns)
+		os=genix
+		;;
+	i370-*)
+		os=mvs
+		;;
+	*-gould)
+		os=sysv
+		;;
+	*-highlevel)
+		os=bsd
+		;;
+	*-encore)
+		os=bsd
+		;;
+	*-sgi)
+		os=irix
+		;;
+	*-siemens)
+		os=sysv4
+		;;
+	*-masscomp)
+		os=rtu
+		;;
+	f30[01]-fujitsu | f700-fujitsu)
+		os=uxpv
+		;;
+	*-rom68k)
+		os=coff
+		;;
+	*-*bug)
+		os=coff
+		;;
+	*-apple)
+		os=macos
+		;;
+	*-atari*)
+		os=mint
+		;;
+	*-wrs)
+		os=vxworks
+		;;
+	*)
+		os=none
+		;;
+esac
+
+fi
+
+# Now, validate our (potentially fixed-up) OS.
+case $os in
+	# Sometimes we do "kernel-libc", so those need to count as OSes.
+	musl* | newlib* | relibc* | uclibc*)
+		;;
+	# Likewise for "kernel-abi"
+	eabi* | gnueabi*)
+		;;
+	# VxWorks passes extra cpu info in the 4th filed.
+	simlinux | simwindows | spe)
+		;;
+	# Now accept the basic system types.
+	# The portable systems comes first.
+	# Each alternative MUST end in a * to match a version number.
+	gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
+	     | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
+	     | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
+	     | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \
+	     | hiux* | abug | nacl* | netware* | windows* \
+	     | os9* | macos* | osx* | ios* \
+	     | mpw* | magic* | mmixware* | mon960* | lnews* \
+	     | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
+	     | aos* | aros* | cloudabi* | sortix* | twizzler* \
+	     | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
+	     | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
+	     | mirbsd* | netbsd* | dicos* | openedition* | ose* \
+	     | bitrig* | openbsd* | secbsd* | solidbsd* | libertybsd* | os108* \
+	     | ekkobsd* | freebsd* | riscix* | lynxos* | os400* \
+	     | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
+	     | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
+	     | udi* | lites* | ieee* | go32* | aux* | hcos* \
+	     | chorusrdb* | cegcc* | glidix* | serenity* \
+	     | cygwin* | msys* | pe* | moss* | proelf* | rtems* \
+	     | midipix* | mingw32* | mingw64* | mint* \
+	     | uxpv* | beos* | mpeix* | udk* | moxiebox* \
+	     | interix* | uwin* | mks* | rhapsody* | darwin* \
+	     | openstep* | oskit* | conix* | pw32* | nonstopux* \
+	     | storm-chaos* | tops10* | tenex* | tops20* | its* \
+	     | os2* | vos* | palmos* | uclinux* | nucleus* | morphos* \
+	     | scout* | superux* | sysv* | rtmk* | tpf* | windiss* \
+	     | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
+	     | skyos* | haiku* | rdos* | toppers* | drops* | es* \
+	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
+	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
+	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
+	     | fiwix* )
+		;;
+	# This one is extra strict with allowed versions
+	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
+		# Don't forget version if it is 3.2v4 or newer.
+		;;
+	none)
+		;;
+	*)
+		echo Invalid configuration \`"$1"\': OS \`"$os"\' not recognized 1>&2
+		exit 1
+		;;
+esac
+
+# As a final step for OS-related things, validate the OS-kernel combination
+# (given a valid OS), if there is a kernel.
+case $kernel-$os in
+	linux-gnu* | linux-dietlibc* | linux-android* | linux-newlib* \
+		   | linux-musl* | linux-relibc* | linux-uclibc* )
+		;;
+	uclinux-uclibc* )
+		;;
+	-dietlibc* | -newlib* | -musl* | -relibc* | -uclibc* )
+		# These are just libc implementations, not actual OSes, and thus
+		# require a kernel.
+		echo "Invalid configuration \`$1': libc \`$os' needs explicit kernel." 1>&2
+		exit 1
+		;;
+	kfreebsd*-gnu* | kopensolaris*-gnu*)
+		;;
+	vxworks-simlinux | vxworks-simwindows | vxworks-spe)
+		;;
+	nto-qnx*)
+		;;
+	os2-emx)
+		;;
+	*-eabi* | *-gnueabi*)
+		;;
+	-*)
+		# Blank kernel with real OS is always fine.
+		;;
+	*-*)
+		echo "Invalid configuration \`$1': Kernel \`$kernel' not known to work with OS \`$os'." 1>&2
+		exit 1
+		;;
+esac
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer.  We pick the logical manufacturer.
+case $vendor in
+	unknown)
+		case $cpu-$os in
+			*-riscix*)
+				vendor=acorn
+				;;
+			*-sunos*)
+				vendor=sun
+				;;
+			*-cnk* | *-aix*)
+				vendor=ibm
+				;;
+			*-beos*)
+				vendor=be
+				;;
+			*-hpux*)
+				vendor=hp
+				;;
+			*-mpeix*)
+				vendor=hp
+				;;
+			*-hiux*)
+				vendor=hitachi
+				;;
+			*-unos*)
+				vendor=crds
+				;;
+			*-dgux*)
+				vendor=dg
+				;;
+			*-luna*)
+				vendor=omron
+				;;
+			*-genix*)
+				vendor=ns
+				;;
+			*-clix*)
+				vendor=intergraph
+				;;
+			*-mvs* | *-opened*)
+				vendor=ibm
+				;;
+			*-os400*)
+				vendor=ibm
+				;;
+			s390-* | s390x-*)
+				vendor=ibm
+				;;
+			*-ptx*)
+				vendor=sequent
+				;;
+			*-tpf*)
+				vendor=ibm
+				;;
+			*-vxsim* | *-vxworks* | *-windiss*)
+				vendor=wrs
+				;;
+			*-aux*)
+				vendor=apple
+				;;
+			*-hms*)
+				vendor=hitachi
+				;;
+			*-mpw* | *-macos*)
+				vendor=apple
+				;;
+			*-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
+				vendor=atari
+				;;
+			*-vos*)
+				vendor=stratus
+				;;
+		esac
+		;;
+esac
+
+echo "$cpu-$vendor-${kernel:+$kernel-}$os"
+exit
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/support/fixlinks b/support/fixlinks
new file mode 100755
index 0000000..73b0fa3
--- /dev/null
+++ b/support/fixlinks
@@ -0,0 +1,89 @@
+#! /bin/sh
+#
+# fixlinks - make symlinks in the bash source tree so that there is
+#	     exactly one version of any given source file.
+#
+# Copyright (C) 1996-2002 Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+SRCDIR=.
+while [ $# -gt 0 ]; do
+	case "$1" in
+	-s)	shift; SRCDIR=$1 ;;
+	-u)	unfix=yes ;;
+	-h)	hardlinks=yes ;;
+	-*)	echo "$0: $1: bad option" 1>&2
+		echo "$0: usage: $0 [-hu] [-s srcdir] [linkmap]" 1>&2
+		exit 1;;
+	*)	break ;;
+	esac
+	shift
+done
+
+if [ ! -d $SRCDIR/builtins ]; then
+	echo "$0: must be run with valid -s argument or from source directory" 1>&2
+	exit 1
+fi
+
+if [ $# -eq 0 ]; then
+	linkfile=$SRCDIR/support/SYMLINKS
+else
+	linkfile=$1	
+fi
+
+if [ ! -f "$linkfile" ]; then
+	echo "$0: symlink map file \`$linkfile' does not exist"
+	exit 1
+fi
+
+rm_ltmp=false
+LINKTEMP=`mktemp -t linktmp.XXXXXXXX 2>/dev/null`
+if [ -z "$LINKTEMP" ]; then
+	: ${TMPDIR:=/tmp}
+	LINKTEMP=${TMPDIR}/linktmp.$$
+	rm_ltmp=true
+fi
+
+$rm_ltmp && rm -f ${LINKTEMP}
+# if the user specified hard links, then do that.  otherwise, try to use
+# symlinks if they're present
+if [ -n "$hardlinks" ]; then
+	LN=ln
+elif (ln -s /dev/null ${LINKTEMP}) >/dev/null 2>&1; then
+	LN="ln -s"
+else
+	LN=ln
+fi
+rm -f ${LINKTEMP}
+
+while read name target
+do
+	case "$name" in
+	\#*)	continue;;
+	esac
+
+	rm -f $name
+	case "$unfix" in
+	yes)	dirname=`expr "$name" ':' '^\(.*\)/[^/]*'`
+		[ -z "$dirname" ] && dirname=.
+		cp $dirname/$target $name
+		echo $target copied to $name ;;
+	*)	$LN $target $name ; echo "$name -> $target" ;;
+	esac
+
+done < $linkfile
+
+exit 0
diff --git a/support/install.sh b/support/install.sh
new file mode 100755
index 0000000..0cac004
--- /dev/null
+++ b/support/install.sh
@@ -0,0 +1,247 @@
+#!/bin/sh
+#
+# install - install a program, script, or datafile
+# This comes from X11R5.
+#
+# $XConsortium: install.sh,v 1.2 89/12/18 14:47:22 jim Exp $
+#
+# Copyright 1991 by the Massachusetts Institute of Technology
+#
+# Permission to use, copy, modify, distribute, and sell this software and its
+# documentation for any purpose is hereby granted without fee, provided that
+# the above copyright notice appear in all copies and that both that
+# copyright notice and this permission notice appear in supporting
+# documentation, and that the name of M.I.T. not be used in advertising or
+# publicity pertaining to distribution of the software without specific,
+# written prior permission.  M.I.T. makes no representations about the
+# suitability of this software for any purpose.  It is provided "as is"
+# without express or implied warranty.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+#
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit="${DOITPROG-}"
+
+
+# put in absolute paths if you don't have them in your path; or use env. vars.
+
+mvprog="${MVPROG-mv}"
+cpprog="${CPPROG-cp}"
+chmodprog="${CHMODPROG-chmod}"
+chownprog="${CHOWNPROG-chown}"
+chgrpprog="${CHGRPPROG-chgrp}"
+stripprog="${STRIPPROG-strip}"
+rmprog="${RMPROG-rm}"
+mkdirprog="${MKDIRPROG-mkdir}"
+
+tranformbasename=""
+transform_arg=""
+instcmd="$mvprog"
+chmodcmd="$chmodprog 0755"
+chowncmd=""
+chgrpcmd=""
+stripcmd=""
+rmcmd="$rmprog -f"
+mvcmd="$mvprog"
+src=""
+dst=""
+dir_arg=""
+
+while [ x"$1" != x ]; do
+    case $1 in
+	-c) instcmd="$cpprog"
+	    shift
+	    continue;;
+
+	-d) dir_arg=true
+	    shift
+	    continue;;
+
+	-m) chmodcmd="$chmodprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-o) chowncmd="$chownprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-g) chgrpcmd="$chgrpprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-s) stripcmd="$stripprog"
+	    shift
+	    continue;;
+
+	-t=*) transformarg=`echo $1 | sed 's/-t=//'`
+	    shift
+	    continue;;
+
+	-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
+	    shift
+	    continue;;
+
+	*)  if [ x"$src" = x ]
+	    then
+		src=$1
+	    else
+		# this colon is to work around a 386BSD /bin/sh bug
+		:
+		dst=$1
+	    fi
+	    shift
+	    continue;;
+    esac
+done
+
+if [ x"$src" = x ]
+then
+	echo "install:	no input file specified"
+	exit 1
+else
+	true
+fi
+
+if [ x"$dir_arg" != x ]; then
+	dst=$src
+	src=""
+	
+	if [ -d $dst ]; then
+		instcmd=:
+	else
+		instcmd=mkdir
+	fi
+else
+
+# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
+# might cause directories to be created, which would be especially bad 
+# if $src (and thus $dsttmp) contains '*'.
+
+	if [ -f $src -o -d $src ]
+	then
+		true
+	else
+		echo "install:  $src does not exist"
+		exit 1
+	fi
+	
+	if [ x"$dst" = x ]
+	then
+		echo "install:	no destination specified"
+		exit 1
+	else
+		true
+	fi
+
+# If destination is a directory, append the input filename; if your system
+# does not like double slashes in filenames, you may need to add some logic
+
+	if [ -d $dst ]
+	then
+		dst="$dst"/`basename $src`
+	else
+		true
+	fi
+fi
+
+## this sed command emulates the dirname command
+dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+
+# Make sure that the destination directory exists.
+#  this part is taken from Noah Friedman's mkinstalldirs script
+
+# Skip lots of stat calls in the usual case.
+if [ ! -d "$dstdir" ]; then
+defaultIFS='	
+'
+IFS="${IFS-${defaultIFS}}"
+
+oIFS="${IFS}"
+# Some sh's can't handle IFS=/ for some reason.
+IFS='%'
+set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
+IFS="${oIFS}"
+
+pathcomp=''
+
+while [ $# -ne 0 ] ; do
+	pathcomp="${pathcomp}${1}"
+	shift
+
+	if [ ! -d "${pathcomp}" ] ;
+        then
+		$mkdirprog "${pathcomp}"
+	else
+		true
+	fi
+
+	pathcomp="${pathcomp}/"
+done
+fi
+
+if [ x"$dir_arg" != x ]
+then
+	$doit $instcmd $dst &&
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
+else
+
+# If we're going to rename the final executable, determine the name now.
+
+	if [ x"$transformarg" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		dstfile=`basename $dst $transformbasename | 
+			sed $transformarg`$transformbasename
+	fi
+
+# don't allow the sed command to completely eliminate the filename
+
+	if [ x"$dstfile" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		true
+	fi
+
+# Make a temp file name in the proper directory.
+
+	dsttmp=$dstdir/#inst.$$#
+
+# Move or copy the file name to the temp name
+
+	$doit $instcmd $src $dsttmp &&
+
+	trap "rm -f ${dsttmp}" 0 &&
+
+# and set any options; do chmod last to preserve setuid bits
+
+# If any of these fail, we abort the whole thing.  If we want to
+# ignore errors from any of these, just make sure not to ignore
+# errors from the above "$doit $instcmd $src $dsttmp" command.
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
+
+# Now rename the file to the real destination.
+
+	$doit $rmcmd -f $dstdir/$dstfile &&
+	$doit $mvcmd $dsttmp $dstdir/$dstfile 
+
+fi &&
+
+
+exit 0
diff --git a/support/man2html.c b/support/man2html.c
new file mode 100644
index 0000000..e6f441b
--- /dev/null
+++ b/support/man2html.c
@@ -0,0 +1,4088 @@
+/*
+ * This program was written by Richard Verhoeven (NL:5482ZX35)
+ * at the Eindhoven University of Technology. Email: rcb5@win.tue.nl
+ *
+ * Permission is granted to distribute, modify and use this program as long
+ * as this comment is not removed or changed.
+ *
+ * THIS IS A MODIFIED VERSION.  IT WAS MODIFIED BY chet@po.cwru.edu FOR
+ * USE BY BASH.
+ */
+
+/*
+ * man2html will add links to the converted manpages. The function add_links
+ * is used for that. At the moment it will add links as follows, where
+ *     indicates what should match to start with:
+ * ^^^
+ * Recognition           Item            Link
+ * ----------------------------------------------------------
+ * name(*)               Manpage         ../man?/name.*
+ *     ^
+ * name@hostname         Email address   mailto:name@hostname
+ *     ^
+ * method://string       URL             method://string
+ *       ^^^
+ * www.host.name         WWW server      http://www.host.name
+ * ^^^^
+ * ftp.host.name         FTP server      ftp://ftp.host.name
+ * ^^^^
+ * <file.h>              Include file    file:/usr/include/file.h
+ *      ^^^
+ *
+ * Since man2html does not check if manpages, hosts or email addresses exist,
+ * some links might not work. For manpages, some extra checks are performed
+ * to make sure not every () pair creates a link. Also out of date pages
+ * might point to incorrect places.
+ *
+ * The program will not allow users to get system specific files, such as
+ * /etc/passwd. It will check that "man" is part of the specified file and
+ * that  "/../" isn't. Even if someone manages to get such file, man2html will
+ * handle it like a manpage and will usually not produce any output (or crash).
+ *
+ * If you find any bugs when normal manpages are converted, please report
+ * them to me (rcb5@win.tue.nl) after you have checked that man(1) can handle
+ * the manpage correct.
+ *
+ * Known bugs and missing features:
+ *
+ *  * Equations are not converted at all.
+ *  * Tables are converted but some features are not possible in html.
+ *  * The tabbing environment is converted by counting characters and adding
+ *    spaces. This might go wrong (outside <PRE>)
+ *  * Some pages look better if man2html works in troff mode, especially pages
+ *    with tables. You can decide at compile time which made you want to use.
+ *
+ *    -DNROFF=0     troff mode
+ *    -DNROFF=1     nroff mode   (default)
+ *
+ *    if you install both modes, you should compile with the correct CGIBASE.
+ *  * Some manpages rely on the fact that troff/nroff is used to convert
+ *    them and use features which are not descripted in the man manpages.
+ *    (definitions, calculations, conditionals, requests). I can't guarantee
+ *    that all these features work on all manpages. (I didn't have the
+ *    time to look through all the available manpages.)
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define NROFF 0
+
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <time.h>
+#include <sys/time.h>
+#include <errno.h>
+
+#define NULL_TERMINATED(n) ((n) + 1)
+
+#define HUGE_STR_MAX  10000
+#define LARGE_STR_MAX 2000
+#define MED_STR_MAX   500
+#define SMALL_STR_MAX 100
+#define TINY_STR_MAX  10
+
+#define MAX_MAN_PATHS 100	/* Max number of directories */
+#define MAX_ZCATS     10	/* Max number of zcat style programs */
+#define MAX_WORDLIST  100
+
+#ifndef EXIT_SUCCESS
+#define EXIT_SUCCESS 0
+#endif
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif
+#ifndef EXIT_USAGE
+#define EXIT_USAGE 2
+#endif
+
+static char location_base[NULL_TERMINATED(MED_STR_MAX)] = "";
+
+static char th_page_and_sec[128] = { '\0' };
+static char th_datestr[128] = { '\0' };
+static char th_version[128] = { '\0' };
+
+char   *signature = "<HR>\nThis document was created by man2html from %s.<BR>\nTime: %s\n";
+
+/* timeformat for signature */
+#define TIMEFORMAT "%d %B %Y %T %Z"
+
+char *manpage;
+
+/* BSD mandoc Bl/El lists to HTML list types */
+#define BL_DESC_LIST   1
+#define BL_BULLET_LIST 2
+#define BL_ENUM_LIST   4
+
+/* BSD mandoc Bd/Ed example(?) blocks */
+#define BD_LITERAL  1
+#define BD_INDENT   2
+
+#ifndef HAVE_STRERROR
+static char *
+strerror(int e)
+{
+	static char emsg[40];
+
+#if defined (HAVE_SYS_ERRLIST)
+	extern int sys_nerr;
+	extern char *sys_errlist[];
+
+	if (e > 0 && e < sys_nerr)
+		return (sys_errlist[e]);
+	else
+#endif				/* HAVE_SYS_ERRLIST */
+	{
+		sprintf(emsg, "Unknown system error %d", e);
+		return (&emsg[0]);
+	}
+}
+#endif				/* !HAVE_STRERROR */
+
+static char *
+strgrow(char *old, int len)
+{
+	char   *new = realloc(old, (strlen(old) + len + 1) * sizeof(char));
+
+	if (!new) {
+		fprintf(stderr, "man2html: out of memory");
+		exit(EXIT_FAILURE);
+	}
+	return new;
+}
+
+static char *
+stralloc(int len)
+{
+	/* allocate enough for len + NULL */
+	char   *new = malloc((len + 1) * sizeof(char));
+
+	if (!new) {
+		fprintf(stderr, "man2html: out of memory");
+		exit(EXIT_FAILURE);
+	}
+	return new;
+}
+
+void *
+xmalloc (size_t size)
+{
+	void *ret;
+
+	ret = malloc (size);
+	if (ret == 0) {
+		fprintf(stderr, "man2html: out of memory");
+		exit(EXIT_FAILURE);
+	}
+	return ret;
+}
+
+/*
+ * Some systems don't have strdup so lets use our own - which can also
+ * check for out of memory.
+ */
+static char *
+strduplicate(char *from)
+{
+	char   *new = stralloc(strlen(from));
+
+	strcpy(new, from);
+	return new;
+}
+
+/* Assumes space for n plus a null */
+static char *
+strmaxcpy(char *to, char *from, int n)
+{
+	int     len = strlen(from);
+
+	strncpy(to, from, n);
+	to[(len <= n) ? len : n] = '\0';
+	return to;
+}
+
+static char *
+strmaxcat(char *to, char *from, int n)
+{
+	int     to_len = strlen(to);
+
+	if (to_len < n) {
+		int     from_len = strlen(from);
+		int     cp = (to_len + from_len <= n) ? from_len : n - to_len;
+
+		strncpy(to + to_len, from, cp);
+		to[to_len + cp] = '\0';
+	}
+	return to;
+}
+
+/* Assumes space for limit plus a null */
+static char *
+strlimitcpy(char *to, char *from, int n, int limit)
+{
+	int     len = n > limit ? limit : n;
+
+	strmaxcpy(to, from, len);
+	to[len] = '\0';
+	return to;
+}
+
+/*
+ * takes string and escapes all metacharacters.  should be used before
+ * including string in system() or similar call.
+ */
+static char *
+escape_input(char *str)
+{
+	int     i, j = 0;
+	static char new[NULL_TERMINATED(MED_STR_MAX)];
+
+	if (strlen(str) * 2 + 1 > MED_STR_MAX) {
+		fprintf(stderr,
+			"man2html: escape_input - str too long:\n%-80s...\n",
+			str);
+		exit(EXIT_FAILURE);
+	}
+	for (i = 0; i < strlen(str); i++) {
+		if (!(((str[i] >= 'A') && (str[i] <= 'Z')) ||
+		      ((str[i] >= 'a') && (str[i] <= 'z')) ||
+		      ((str[i] >= '0') && (str[i] <= '9')))) {
+			new[j] = '\\';
+			j++;
+		}
+		new[j] = str[i];
+		j++;
+	}
+	new[j] = '\0';
+	return new;
+}
+
+static void
+usage(void)
+{
+	fprintf(stderr, "man2html: usage: man2html filename\n");
+}
+
+
+
+/*
+ * below this you should not change anything unless you know a lot
+ * about this program or about troff.
+ */
+
+typedef struct STRDEF STRDEF;
+struct STRDEF {
+	int     nr, slen;
+	char   *st;
+	STRDEF *next;
+};
+
+typedef struct INTDEF INTDEF;
+struct INTDEF {
+	int     nr;
+	int     val;
+	int     incr;
+	INTDEF *next;
+};
+
+static char NEWLINE[2] = "\n";
+static char idxlabel[6] = "ixAAA";
+
+#define INDEXFILE "/tmp/manindex.list"
+
+static char *fname;
+static FILE *idxfile;
+
+static STRDEF *chardef, *strdef, *defdef;
+static INTDEF *intdef;
+
+#define V(A,B) ((A)*256+(B))
+
+static INTDEF standardint[] = {
+	{V('n', ' '), NROFF, 0, NULL},
+	{V('t', ' '), 1 - NROFF, 0, NULL},
+	{V('o', ' '), 1, 0, NULL},
+	{V('e', ' '), 0, 0, NULL},
+	{V('.', 'l'), 70, 0, NULL},
+	{V('.', '$'), 0, 0, NULL},
+	{V('.', 'A'), NROFF, 0, NULL},
+	{V('.', 'T'), 1 - NROFF, 0, NULL},
+	{V('.', 'V'), 1, 0, NULL},	/* the me package tests for this */
+{0, 0, 0, NULL}};
+
+static STRDEF standardstring[] = {
+	{V('R', ' '), 1, "&#174;", NULL},
+	{V('l', 'q'), 2, "``", NULL},
+	{V('r', 'q'), 2, "''", NULL},
+	{0, 0, NULL, NULL}
+};
+
+
+static STRDEF standardchar[] = {
+	{V('*', '*'), 1, "*", NULL},
+	{V('*', 'A'), 1, "A", NULL},
+	{V('*', 'B'), 1, "B", NULL},
+	{V('*', 'C'), 2, "Xi", NULL},
+	{V('*', 'D'), 5, "Delta", NULL},
+	{V('*', 'E'), 1, "E", NULL},
+	{V('*', 'F'), 3, "Phi", NULL},
+	{V('*', 'G'), 5, "Gamma", NULL},
+	{V('*', 'H'), 5, "Theta", NULL},
+	{V('*', 'I'), 1, "I", NULL},
+	{V('*', 'K'), 1, "K", NULL},
+	{V('*', 'L'), 6, "Lambda", NULL},
+	{V('*', 'M'), 1, "M", NULL},
+	{V('*', 'N'), 1, "N", NULL},
+	{V('*', 'O'), 1, "O", NULL},
+	{V('*', 'P'), 2, "Pi", NULL},
+	{V('*', 'Q'), 3, "Psi", NULL},
+	{V('*', 'R'), 1, "P", NULL},
+	{V('*', 'S'), 5, "Sigma", NULL},
+	{V('*', 'T'), 1, "T", NULL},
+	{V('*', 'U'), 1, "Y", NULL},
+	{V('*', 'W'), 5, "Omega", NULL},
+	{V('*', 'X'), 1, "X", NULL},
+	{V('*', 'Y'), 1, "H", NULL},
+	{V('*', 'Z'), 1, "Z", NULL},
+	{V('*', 'a'), 5, "alpha", NULL},
+	{V('*', 'b'), 4, "beta", NULL},
+	{V('*', 'c'), 2, "xi", NULL},
+	{V('*', 'd'), 5, "delta", NULL},
+	{V('*', 'e'), 7, "epsilon", NULL},
+	{V('*', 'f'), 3, "phi", NULL},
+	{V('*', 'g'), 5, "gamma", NULL},
+	{V('*', 'h'), 5, "theta", NULL},
+	{V('*', 'i'), 4, "iota", NULL},
+	{V('*', 'k'), 5, "kappa", NULL},
+	{V('*', 'l'), 6, "lambda", NULL},
+	{V('*', 'm'), 1, "&#181;", NULL},
+	{V('*', 'n'), 2, "nu", NULL},
+	{V('*', 'o'), 1, "o", NULL},
+	{V('*', 'p'), 2, "pi", NULL},
+	{V('*', 'q'), 3, "psi", NULL},
+	{V('*', 'r'), 3, "rho", NULL},
+	{V('*', 's'), 5, "sigma", NULL},
+	{V('*', 't'), 3, "tau", NULL},
+	{V('*', 'u'), 7, "upsilon", NULL},
+	{V('*', 'w'), 5, "omega", NULL},
+	{V('*', 'x'), 3, "chi", NULL},
+	{V('*', 'y'), 3, "eta", NULL},
+	{V('*', 'z'), 4, "zeta", NULL},
+	{V('t', 's'), 5, "sigma", NULL},
+	{V('+', '-'), 1, "&#177;", NULL},
+	{V('1', '2'), 1, "&#189;", NULL},
+	{V('1', '4'), 1, "&#188;", NULL},
+	{V('3', '4'), 1, "&#190;", NULL},
+	{V('F', 'i'), 3, "ffi", NULL},
+	{V('F', 'l'), 3, "ffl", NULL},
+	{V('a', 'a'), 1, "&#180;", NULL},
+	{V('a', 'p'), 1, "~", NULL},
+	{V('b', 'r'), 1, "|", NULL},
+	{V('b', 'u'), 1, "*", NULL},
+	{V('b', 'v'), 1, "|", NULL},
+	{V('c', 'i'), 1, "o", NULL},
+	{V('c', 'o'), 1, "&#169;", NULL},
+	{V('c', 't'), 1, "&#162;", NULL},
+	{V('d', 'e'), 1, "&#176;", NULL},
+	{V('d', 'g'), 1, "+", NULL},
+	{V('d', 'i'), 1, "&#247;", NULL},
+	{V('e', 'm'), 1, "-", NULL},
+	{V('e', 'm'), 3, "---", NULL},
+	{V('e', 'q'), 1, "=", NULL},
+	{V('e', 's'), 1, "&#216;", NULL},
+	{V('f', 'f'), 2, "ff", NULL},
+	{V('f', 'i'), 2, "fi", NULL},
+	{V('f', 'l'), 2, "fl", NULL},
+	{V('f', 'm'), 1, "&#180;", NULL},
+	{V('g', 'a'), 1, "`", NULL},
+	{V('h', 'y'), 1, "-", NULL},
+	{V('l', 'c'), 2, "|&#175;", NULL},
+	{V('l', 'f'), 2, "|_", NULL},
+	{V('l', 'k'), 1, "<FONT SIZE=+2>{</FONT>", NULL},
+	{V('m', 'i'), 1, "-", NULL},
+	{V('m', 'u'), 1, "&#215;", NULL},
+	{V('n', 'o'), 1, "&#172;", NULL},
+	{V('o', 'r'), 1, "|", NULL},
+	{V('p', 'l'), 1, "+", NULL},
+	{V('r', 'c'), 2, "&#175;|", NULL},
+	{V('r', 'f'), 2, "_|", NULL},
+	{V('r', 'g'), 1, "&#174;", NULL},
+	{V('r', 'k'), 1, "<FONT SIZE=+2>}</FONT>", NULL},
+	{V('r', 'n'), 1, "&#175;", NULL},
+	{V('r', 'u'), 1, "_", NULL},
+	{V('s', 'c'), 1, "&#167;", NULL},
+	{V('s', 'l'), 1, "/", NULL},
+	{V('s', 'q'), 2, "[]", NULL},
+	{V('u', 'l'), 1, "_", NULL},
+	{0, 0, NULL, NULL}
+};
+
+/* default: print code */
+
+
+static char eqndelimopen = 0, eqndelimclose = 0;
+static char escapesym = '\\', nobreaksym = '\'', controlsym = '.', fieldsym = 0, padsym = 0;
+
+static char *buffer = NULL;
+static int buffpos = 0, buffmax = 0;
+static int scaninbuff = 0;
+static int itemdepth = 0;
+static int dl_set[20] = {0};
+static int still_dd = 0;
+static int tabstops[20] = {8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96};
+static int maxtstop = 12;
+static int curpos = 0;
+
+static char *scan_troff(char *c, int san, char **result);
+static char *scan_troff_mandoc(char *c, int san, char **result);
+
+static char **argument = NULL;
+
+static char charb[TINY_STR_MAX];
+
+static void
+print_sig(void)
+{
+	char    datbuf[NULL_TERMINATED(MED_STR_MAX)];
+	struct tm *timetm;
+	time_t  clock;
+
+	datbuf[0] = '\0';
+	clock = time(NULL);
+	timetm = localtime(&clock);
+	strftime(datbuf, MED_STR_MAX, TIMEFORMAT, timetm);
+	printf(signature, manpage, datbuf);
+}
+
+static char *
+expand_char(int nr)
+{
+	STRDEF *h;
+
+	h = chardef;
+	if (!nr)
+		return NULL;
+	while (h)
+		if (h->nr == nr) {
+			curpos += h->slen;
+			return h->st;
+		} else
+			h = h->next;
+	charb[0] = nr / 256;
+	charb[1] = nr % 256;
+	charb[2] = '\0';
+	if (charb[0] == '<') {	/* Fix up <= */
+		charb[4] = charb[1];
+		strncpy(charb, "&lt;", 4);
+		charb[5] = '\0';
+	}
+	curpos += 2;
+	return charb;
+}
+
+static char *
+expand_string(int nr)
+{
+	STRDEF *h = strdef;
+
+	if (!nr)
+		return NULL;
+	while (h)
+		if (h->nr == nr) {
+			curpos += h->slen;
+			return h->st;
+		} else
+			h = h->next;
+	return NULL;
+}
+
+static char *
+read_man_page(char *filename)
+{
+	char   *man_buf = NULL;
+	int     i;
+	FILE   *man_stream = NULL;
+	struct stat stbuf;
+	int     buf_size;
+
+	if (stat(filename, &stbuf) == -1)
+		return NULL;
+
+	buf_size = stbuf.st_size;
+	man_buf = stralloc(buf_size + 5);
+	man_stream = fopen(filename, "r");
+	if (man_stream) {
+		man_buf[0] = '\n';
+		if (fread(man_buf + 1, 1, buf_size, man_stream) == buf_size) {
+			man_buf[buf_size] = '\n';
+			man_buf[buf_size + 1] = man_buf[buf_size + 2] = '\0';
+		} else {
+			free(man_buf);
+			man_buf = NULL;
+		}
+		fclose(man_stream);
+	}
+	return man_buf;
+}
+
+
+static char outbuffer[NULL_TERMINATED(HUGE_STR_MAX)];
+static int obp = 0;
+static int no_newline_output = 0;
+static int newline_for_fun = 0;
+static int output_possible = 0;
+static int out_length = 0;
+
+/*
+ * Add the links to the output. At the moment the following are
+ * recognized:
+ * 
+#if 0
+ *	name(*)                 -> ../man?/name.*
+#endif
+ *	method://string         -> method://string
+ *	www.host.name		-> http://www.host.name
+ *	ftp.host.name           -> ftp://ftp.host.name
+ *	name@host               -> mailto:name@host
+ *	<name.h>                -> file:/usr/include/name.h   (guess)
+ * 
+ * Other possible links to add in the future:
+ * 
+ * /dir/dir/file  -> file:/dir/dir/file
+ */
+static void
+add_links(char *c)
+{
+	int     i, j, nr;
+	char   *f, *g, *h;
+	char   *idtest[6];	/* url, mailto, www, ftp, manpage */
+
+	out_length += strlen(c);
+	/* search for (section) */
+	nr = 0;
+	idtest[0] = strstr(c + 1, "://");
+	idtest[1] = strchr(c + 1, '@');
+	idtest[2] = strstr(c, "www.");
+	idtest[3] = strstr(c, "ftp.");
+#if 0
+	idtest[4] = strchr(c + 1, '(');
+#else
+	idtest[4] = 0;
+#endif
+	idtest[5] = strstr(c + 1, ".h&gt;");
+	for (i = 0; i < 6; i++)
+		nr += (idtest[i] != NULL);
+	while (nr) {
+		j = -1;
+		for (i = 0; i < 6; i++)
+			if (idtest[i] && (j < 0 || idtest[i] < idtest[j]))
+				j = i;
+		switch (j) {
+		case 5:	/* <name.h> */
+			f = idtest[5];
+			h = f + 2;
+			g = f;
+			while (g > c && g[-1] != ';')
+				g--;
+			if (g != c) {
+				char    t;
+
+				t = *g;
+				*g = '\0';
+				fputs(c, stdout);
+				*g = t;
+				*h = '\0';
+				printf("<A HREF=\"file:/usr/include/%s\">%s</A>&gt;", g, g);
+				c = f + 6;
+			} else {
+				f[5] = '\0';
+				fputs(c, stdout);
+				f[5] = ';';
+				c = f + 5;
+			}
+			break;
+		case 4:	/* manpage */
+#if 0
+			f = idtest[j];
+			/* check section */
+			g = strchr(f, ')');
+			if (g && f - g < 6 && (isalnum(f[-1]) || f[-1] == '>') &&
+			    ((isdigit(f[1]) && f[1] != '0' &&
+			      (f[2] == ')' || (isalpha(f[2]) && f[3] == ')') || f[2] == 'X')) ||
+			   (f[2] == ')' && (f[1] == 'n' || f[1] == 'l')))) {
+				/* this might be a link */
+				h = f - 1;
+				/* skip html makeup */
+				while (h > c && *h == '>') {
+					while (h != c && *h != '<')
+						h--;
+					if (h != c)
+						h--;
+				}
+				if (isalnum(*h)) {
+					char    t, sec, subsec, *e;
+
+					e = h + 1;
+					sec = f[1];
+					subsec = f[2];
+					if ((subsec == 'X' && f[3] != ')') || subsec == ')')
+						subsec = '\0';
+					while (h > c && (isalnum(h[-1]) || h[-1] == '_' ||
+					      h[-1] == '-' || h[-1] == '.'))
+						h--;
+					t = *h;
+					*h = '\0';
+					fputs(c, stdout);
+					*h = t;
+					t = *e;
+					*e = '\0';
+					if (subsec)
+						printf("<A HREF=\""
+						       CGIBASE
+						  "?man%c/%s.%c%c\">%s</A>",
+						       sec, h, sec, tolower(subsec), h);
+					else
+						printf("<A HREF=\""
+						       CGIBASE
+						    "?man%c/%s.%c\">%s</A>",
+						       sec, h, sec, h);
+					*e = t;
+					c = e;
+				}
+			}
+			*f = '\0';
+			fputs(c, stdout);
+			*f = '(';
+			idtest[4] = f - 1;
+			c = f;
+#endif
+			break;	/* manpage */
+		case 3:	/* ftp */
+		case 2:	/* www */
+			g = f = idtest[j];
+			while (*g && (isalnum(*g) || *g == '_' || *g == '-' || *g == '+' ||
+				      *g == '.'))
+				g++;
+			if (g[-1] == '.')
+				g--;
+			if (g - f > 4) {
+				char    t;
+
+				t = *f;
+				*f = '\0';
+				fputs(c, stdout);
+				*f = t;
+				t = *g;
+				*g = '\0';
+				printf("<A HREF=\"%s://%s\">%s</A>", (j == 3 ? "ftp" : "http"),
+				       f, f);
+				*g = t;
+				c = g;
+			} else {
+				f[3] = '\0';
+				fputs(c, stdout);
+				c = f + 3;
+				f[3] = '.';
+			}
+			break;
+		case 1:	/* mailto */
+			g = f = idtest[1];
+			while (g > c && (isalnum(g[-1]) || g[-1] == '_' || g[-1] == '-' ||
+			      g[-1] == '+' || g[-1] == '.' || g[-1] == '%'))
+				g--;
+			h = f + 1;
+			while (*h && (isalnum(*h) || *h == '_' || *h == '-' || *h == '+' ||
+				      *h == '.'))
+				h++;
+			if (*h == '.')
+				h--;
+			if (h - f > 4 && f - g > 1) {
+				char    t;
+
+				t = *g;
+				*g = '\0';
+				fputs(c, stdout);
+				*g = t;
+				t = *h;
+				*h = '\0';
+				printf("<A HREF=\"mailto:%s\">%s</A>", g, g);
+				*h = t;
+				c = h;
+			} else {
+				*f = '\0';
+				fputs(c, stdout);
+				*f = '@';
+				idtest[1] = c;
+				c = f;
+			}
+			break;
+		case 0:	/* url */
+			g = f = idtest[0];
+			while (g > c && isalpha(g[-1]) && islower(g[-1]))
+				g--;
+			h = f + 3;
+			while (*h && !isspace(*h) && *h != '<' && *h != '>' && *h != '"' &&
+			       *h != '&')
+				h++;
+			if (f - g > 2 && f - g < 7 && h - f > 3) {
+				char    t;
+
+				t = *g;
+				*g = '\0';
+				fputs(c, stdout);
+				*g = t;
+				t = *h;
+				*h = '\0';
+				printf("<A HREF=\"%s\">%s</A>", g, g);
+				*h = t;
+				c = h;
+			} else {
+				f[1] = '\0';
+				fputs(c, stdout);
+				f[1] = '/';
+				c = f + 1;
+			}
+			break;
+		default:
+			break;
+		}
+		nr = 0;
+		if (idtest[0] && idtest[0] < c)
+			idtest[0] = strstr(c + 1, "://");
+		if (idtest[1] && idtest[1] < c)
+			idtest[1] = strchr(c + 1, '@');
+		if (idtest[2] && idtest[2] < c)
+			idtest[2] = strstr(c, "www.");
+		if (idtest[3] && idtest[3] < c)
+			idtest[3] = strstr(c, "ftp.");
+		if (idtest[4] && idtest[4] < c)
+			idtest[4] = strchr(c + 1, '(');
+		if (idtest[5] && idtest[5] < c)
+			idtest[5] = strstr(c + 1, ".h&gt;");
+		for (i = 0; i < 6; i++)
+			nr += (idtest[i] != NULL);
+	}
+	fputs(c, stdout);
+}
+
+static int current_font = 0;
+static int current_size = 0;
+static int fillout = 1;
+
+static void
+out_html(char *c)
+{
+	if (!c)
+		return;
+	if (no_newline_output) {
+		int     i = 0;
+
+		no_newline_output = 1;
+		while (c[i]) {
+			if (!no_newline_output)
+				c[i - 1] = c[i];
+			if (c[i] == '\n')
+				no_newline_output = 1;
+			i++;
+		}
+		if (!no_newline_output)
+			c[i - 1] = 0;
+	}
+	if (scaninbuff) {
+		while (*c) {
+			if (buffpos >= buffmax) {
+				char   *h;
+
+				h = realloc(buffer, buffmax * 2);
+				if (!h)
+					return;
+				buffer = h;
+				buffmax *= 2;
+			}
+			buffer[buffpos++] = *c++;
+		}
+	} else if (output_possible) {
+		while (*c) {
+			outbuffer[obp++] = *c;
+			if (*c == '\n' || obp > HUGE_STR_MAX) {
+				outbuffer[obp] = '\0';
+				add_links(outbuffer);
+				obp = 0;
+			}
+			c++;
+		}
+	}
+}
+
+#define FO0 ""
+#define FC0 ""
+#define FO1 "<I>"
+#define FC1 "</I>"
+#define FO2 "<B>"
+#define FC2 "</B>"
+#define FO3 "<TT>"
+#define FC3 "</TT>"
+
+static char *switchfont[16] = {
+	"", FC0 FO1, FC0 FO2, FC0 FO3,
+	FC1 FO0, "", FC1 FO2, FC1 FO3,
+	FC2 FO0, FC2 FO1, "", FC2 FO3,
+	FC3 FO0, FC3 FO1, FC3 FO2, ""
+};
+
+static char *
+change_to_font(int nr)
+{
+	int     i;
+
+	switch (nr) {
+	case '0':
+		nr++;
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+		nr = nr - '1';
+		break;
+	case V('C', 'W'):
+		nr = 3;
+		break;
+	case 'L':
+		nr = 3;
+		break;
+	case 'B':
+		nr = 2;
+		break;
+	case 'I':
+		nr = 1;
+		break;
+	case 'P':
+	case 'R':
+		nr = 0;
+		break;
+	case 0:
+	case 1:
+	case 2:
+	case 3:
+		break;
+	default:
+		nr = 0;
+		break;
+	}
+	i = current_font * 4 + nr % 4;
+	current_font = nr % 4;
+	return switchfont[i];
+}
+
+static char sizebuf[200];
+
+static char *
+change_to_size(int nr)
+{
+	int     i;
+
+	switch (nr) {
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+		nr = nr - '0';
+		break;
+	case '\0':
+		break;
+	default:
+		nr = current_size + nr;
+		if (nr > 9)
+			nr = 9;
+		if (nr < -9)
+			nr = -9;
+		break;
+	}
+	if (nr == current_size)
+		return "";
+	i = current_font;
+	sizebuf[0] = '\0';
+	strcat(sizebuf, change_to_font(0));
+	if (current_size)
+		strcat(sizebuf, "</FONT>");
+	current_size = nr;
+	if (nr) {
+		int     l;
+
+		strcat(sizebuf, "<FONT SIZE=");
+		l = strlen(sizebuf);
+		if (nr > 0)
+			sizebuf[l++] = '+';
+		else
+			sizebuf[l++] = '-', nr = -nr;
+		sizebuf[l++] = nr + '0';
+		sizebuf[l++] = '>';
+		sizebuf[l] = '\0';
+	}
+	strcat(sizebuf, change_to_font(i));
+	return sizebuf;
+}
+
+static int asint = 0;
+static int intresult = 0;
+
+#define SKIPEOL while (*c && *c++!='\n')
+
+static int skip_escape = 0;
+static int single_escape = 0;
+
+static char *
+scan_escape(char *c)
+{
+	char   *h = NULL;
+	char    b[5];
+	INTDEF *intd;
+	int     exoutputp, exskipescape;
+	int     i, j;
+
+	intresult = 0;
+	switch (*c) {
+	case 'e':
+		h = "\\";
+		curpos++;
+		break;
+	case '0':
+	case ' ':
+		h = "&nbsp;";
+		curpos++;
+		break;
+	case '|':
+		h = "";
+		break;
+	case '"':
+		SKIPEOL;
+		c--;
+		h = "";
+		break;
+	case '$':
+		if (argument) {
+			c++;
+			i = (*c - '1');
+			if (!(h = argument[i]))
+				h = "";
+		}
+		break;
+	case 'z':
+		c++;
+		if (*c == '\\') {
+			c = scan_escape(c + 1);
+			c--;
+			h = "";
+		} else {
+			b[0] = *c;
+			b[1] = '\0';
+			h = "";
+		}
+		break;
+	case 'k':
+		c++;
+		if (*c == '(')
+			c += 2;
+	case '^':
+	case '!':
+	case '%':
+	case 'a':
+	case 'd':
+	case 'r':
+	case 'u':
+	case '\n':
+	case '&':
+		h = "";
+		break;
+	case '(':
+		c++;
+		i = c[0] * 256 + c[1];
+		c++;
+		h = expand_char(i);
+		break;
+	case '*':
+		c++;
+		if (*c == '(') {
+			c++;
+			i = c[0] * 256 + c[1];
+			c++;
+		} else
+			i = *c * 256 + ' ';
+		h = expand_string(i);
+		break;
+	case 'f':
+		c++;
+		if (*c == '\\') {
+			c++;
+			c = scan_escape(c);
+			c--;
+			i = intresult;
+		} else if (*c != '(')
+			i = *c;
+		else {
+			c++;
+			i = c[0] * 256 + c[1];
+			c++;
+		}
+		if (!skip_escape)
+			h = change_to_font(i);
+		else
+			h = "";
+		break;
+	case 's':
+		c++;
+		j = 0;
+		i = 0;
+		if (*c == '-') {
+			j = -1;
+			c++;
+		} else if (*c == '+') {
+			j = 1;
+			c++;
+		}
+		if (*c == '0')
+			c++;
+		else if (*c == '\\') {
+			c++;
+			c = scan_escape(c);
+			i = intresult;
+			if (!j)
+				j = 1;
+		} else
+			while (isdigit(*c) && (!i || (!j && i < 4)))
+				i = i * 10 + (*c++) - '0';
+		if (!j) {
+			j = 1;
+			if (i)
+				i = i - 10;
+		}
+		if (!skip_escape)
+			h = change_to_size(i * j);
+		else
+			h = "";
+		c--;
+		break;
+	case 'n':
+		c++;
+		j = 0;
+		switch (*c) {
+		case '+':
+			j = 1;
+			c++;
+			break;
+		case '-':
+			j = -1;
+			c++;
+			break;
+		default:
+			break;
+		}
+		if (*c == '(') {
+			c++;
+			i = V(c[0], c[1]);
+			c = c + 1;
+		} else {
+			i = V(c[0], ' ');
+		}
+		intd = intdef;
+		while (intd && intd->nr != i)
+			intd = intd->next;
+		if (intd) {
+			intd->val = intd->val + j * intd->incr;
+			intresult = intd->val;
+		} else {
+			switch (i) {
+			case V('.', 's'):
+				intresult = current_size;
+				break;
+			case V('.', 'f'):
+				intresult = current_font;
+				break;
+			default:
+				intresult = 0;
+				break;
+			}
+		}
+		h = "";
+		break;
+	case 'w':
+		c++;
+		i = *c;
+		c++;
+		exoutputp = output_possible;
+		exskipescape = skip_escape;
+		output_possible = 0;
+		skip_escape = 1;
+		j = 0;
+		while (*c != i) {
+			j++;
+			if (*c == escapesym)
+				c = scan_escape(c + 1);
+			else
+				c++;
+		}
+		output_possible = exoutputp;
+		skip_escape = exskipescape;
+		intresult = j;
+		break;
+	case 'l':
+		h = "<HR>";
+		curpos = 0;
+	case 'b':
+	case 'v':
+	case 'x':
+	case 'o':
+	case 'L':
+	case 'h':
+		c++;
+		i = *c;
+		c++;
+		exoutputp = output_possible;
+		exskipescape = skip_escape;
+		output_possible = 0;
+		skip_escape = 1;
+		while (*c != i)
+			if (*c == escapesym)
+				c = scan_escape(c + 1);
+			else
+				c++;
+		output_possible = exoutputp;
+		skip_escape = exskipescape;
+		break;
+	case 'c':
+		no_newline_output = 1;
+		break;
+	case '{':
+		newline_for_fun++;
+		h = "";
+		break;
+	case '}':
+		if (newline_for_fun)
+			newline_for_fun--;
+		h = "";
+		break;
+	case 'p':
+		h = "<BR>\n";
+		curpos = 0;
+		break;
+	case 't':
+		h = "\t";
+		curpos = (curpos + 8) & 0xfff8;
+		break;
+	case '<':
+		h = "&lt;";
+		curpos++;
+		break;
+	case '>':
+		h = "&gt;";
+		curpos++;
+		break;
+	case '\\':
+		if (single_escape) {
+			c--;
+			break;
+		}
+	default:
+		b[0] = *c;
+		b[1] = 0;
+		h = b;
+		curpos++;
+		break;
+	}
+	c++;
+	if (!skip_escape)
+		out_html(h);
+	return c;
+}
+
+typedef struct TABLEITEM TABLEITEM;
+
+struct TABLEITEM {
+	char   *contents;
+	int     size, align, valign, colspan, rowspan, font, vleft, vright, space,
+	        width;
+	TABLEITEM *next;
+};
+
+static TABLEITEM emptyfield = {NULL, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, NULL};
+
+typedef struct TABLEROW TABLEROW;
+
+struct TABLEROW {
+	TABLEITEM *first;
+	TABLEROW *prev, *next;
+};
+
+static char *tableopt[] = {
+	"center", "expand", "box", "allbox", "doublebox",
+	"tab", "linesize", "delim", NULL
+};
+static int tableoptl[] = {6, 6, 3, 6, 9, 3, 8, 5, 0};
+
+static void
+clear_table(TABLEROW * table)
+{
+	TABLEROW *tr1, *tr2;
+	TABLEITEM *ti1, *ti2;
+
+	tr1 = table;
+	while (tr1->prev)
+		tr1 = tr1->prev;
+	while (tr1) {
+		ti1 = tr1->first;
+		while (ti1) {
+			ti2 = ti1->next;
+			if (ti1->contents)
+				free(ti1->contents);
+			free(ti1);
+			ti1 = ti2;
+		}
+		tr2 = tr1;
+		tr1 = tr1->next;
+		free(tr2);
+	}
+}
+
+static char *scan_expression(char *c, int *result);
+
+static char *
+scan_format(char *c, TABLEROW ** result, int *maxcol)
+{
+	TABLEROW *layout, *currow;
+	TABLEITEM *curfield;
+	int     i, j;
+
+	if (*result) {
+		clear_table(*result);
+	}
+	layout = currow = (TABLEROW *) xmalloc(sizeof(TABLEROW));
+	currow->next = currow->prev = NULL;
+	currow->first = curfield = (TABLEITEM *) xmalloc(sizeof(TABLEITEM));
+	*curfield = emptyfield;
+	while (*c && *c != '.') {
+		switch (*c) {
+		case 'C':
+		case 'c':
+		case 'N':
+		case 'n':
+		case 'R':
+		case 'r':
+		case 'A':
+		case 'a':
+		case 'L':
+		case 'l':
+		case 'S':
+		case 's':
+		case '^':
+		case '_':
+			if (curfield->align) {
+				curfield->next = (TABLEITEM *) xmalloc(sizeof(TABLEITEM));
+				curfield = curfield->next;
+				*curfield = emptyfield;
+			}
+			curfield->align = toupper(*c);
+			c++;
+			break;
+		case 'i':
+		case 'I':
+		case 'B':
+		case 'b':
+			curfield->font = toupper(*c);
+			c++;
+			break;
+		case 'f':
+		case 'F':
+			c++;
+			curfield->font = toupper(*c);
+			c++;
+			if (!isspace(*c))
+				c++;
+			break;
+		case 't':
+		case 'T':
+			curfield->valign = 't';
+			c++;
+			break;
+		case 'p':
+		case 'P':
+			c++;
+			i = j = 0;
+			if (*c == '+') {
+				j = 1;
+				c++;
+			}
+			if (*c == '-') {
+				j = -1;
+				c++;
+			}
+			while (isdigit(*c))
+				i = i * 10 + (*c++) - '0';
+			if (j)
+				curfield->size = i * j;
+			else
+				curfield->size = j - 10;
+			break;
+		case 'v':
+		case 'V':
+		case 'w':
+		case 'W':
+			c = scan_expression(c + 2, &curfield->width);
+			break;
+		case '|':
+			if (curfield->align)
+				curfield->vleft++;
+			else
+				curfield->vright++;
+			c++;
+			break;
+		case 'e':
+		case 'E':
+			c++;
+			break;
+		case '0':
+		case '1':
+		case '2':
+		case '3':
+		case '4':
+		case '5':
+		case '6':
+		case '7':
+		case '8':
+		case '9':
+			i = 0;
+			while (isdigit(*c))
+				i = i * 10 + (*c++) - '0';
+			curfield->space = i;
+			break;
+		case ',':
+		case '\n':
+			currow->next = (TABLEROW *) xmalloc(sizeof(TABLEROW));
+			currow->next->prev = currow;
+			currow = currow->next;
+			currow->next = NULL;
+			curfield = currow->first = (TABLEITEM *) xmalloc(sizeof(TABLEITEM));
+			*curfield = emptyfield;
+			c++;
+			break;
+		default:
+			c++;
+			break;
+		}
+	}
+	if (*c == '.')
+		while (*c++ != '\n');
+	*maxcol = 0;
+	currow = layout;
+	while (currow) {
+		curfield = layout->first;
+		i = 0;
+		while (curfield) {
+			i++;
+			curfield = curfield->next;
+		}
+		if (i > *maxcol)
+			*maxcol = i;
+		currow = currow->next;
+	}
+	*result = layout;
+	return c;
+}
+
+static TABLEROW *
+next_row(TABLEROW * tr)
+{
+	if (tr->next) {
+		tr = tr->next;
+		if (!tr->next)
+			next_row(tr);
+		return tr;
+	} else {
+		TABLEITEM *ti, *ti2;
+
+		tr->next = (TABLEROW *) xmalloc(sizeof(TABLEROW));
+		tr->next->prev = tr;
+		ti = tr->first;
+		tr = tr->next;
+		tr->next = NULL;
+		if (ti)
+			tr->first = ti2 = (TABLEITEM *) xmalloc(sizeof(TABLEITEM));
+		else
+			tr->first = ti2 = NULL;
+		while (ti != ti2) {
+			*ti2 = *ti;
+			ti2->contents = NULL;
+			if ((ti = ti->next)) {
+				ti2->next = (TABLEITEM *) xmalloc(sizeof(TABLEITEM));
+			}
+			ti2 = ti2->next;
+		}
+		return tr;
+	}
+}
+
+static char itemreset[20] = "\\fR\\s0";
+
+static char *
+scan_table(char *c)
+{
+	char   *t, *h, *g;
+	int     center = 0, expand = 0, box = 0, border = 0, linesize = 1;
+	int     i, j, maxcol = 0, finished = 0;
+	int     oldfont, oldsize, oldfillout;
+	char    itemsep = '\t';
+	TABLEROW *layout = NULL, *currow, *ftable;
+	TABLEITEM *curfield;
+
+	while (*c++ != '\n');
+	h = c;
+	if (*h == '.')
+		return c - 1;
+	oldfont = current_font;
+	oldsize = current_size;
+	oldfillout = fillout;
+	out_html(change_to_font(0));
+	out_html(change_to_size(0));
+	if (!fillout) {
+		fillout = 1;
+		out_html("</PRE>");
+	}
+	while (*h && *h != '\n')
+		h++;
+	if (h[-1] == ';') {
+		/* scan table options */
+		while (c < h) {
+			while (isspace(*c))
+				c++;
+			for (i = 0; tableopt[i] && strncmp(tableopt[i], c, tableoptl[i]); i++);
+			c = c + tableoptl[i];
+			switch (i) {
+			case 0:
+				center = 1;
+				break;
+			case 1:
+				expand = 1;
+				break;
+			case 2:
+				box = 1;
+				break;
+			case 3:
+				border = 1;
+				break;
+			case 4:
+				box = 2;
+				break;
+			case 5:
+				while (*c++ != '(');
+				itemsep = *c++;
+				break;
+			case 6:
+				while (*c++ != '(');
+				linesize = 0;
+				while (isdigit(*c))
+					linesize = linesize * 10 + (*c++) - '0';
+				break;
+			case 7:
+				while (*c != ')')
+					c++;
+			default:
+				break;
+			}
+			c++;
+		}
+		c = h + 1;
+	}
+	/* scan layout */
+	c = scan_format(c, &layout, &maxcol);
+	currow = layout;
+	next_row(currow);
+	curfield = layout->first;
+	i = 0;
+	while (!finished) {
+		/* search item */
+		h = c;
+		if ((*c == '_' || *c == '=') && (c[1] == itemsep || c[1] == '\n')) {
+			if (c[-1] == '\n' && c[1] == '\n') {
+				if (currow->prev) {
+					currow->prev->next = (TABLEROW *) xmalloc(sizeof(TABLEROW));
+					currow->prev->next->next = currow;
+					currow->prev->next->prev = currow->prev;
+					currow->prev = currow->prev->next;
+				} else {
+					currow->prev = layout = (TABLEROW *) xmalloc(sizeof(TABLEROW));
+					currow->prev->prev = NULL;
+					currow->prev->next = currow;
+				}
+				curfield = currow->prev->first =
+					(TABLEITEM *) xmalloc(sizeof(TABLEITEM));
+				*curfield = emptyfield;
+				curfield->align = *c;
+				curfield->colspan = maxcol;
+				curfield = currow->first;
+				c = c + 2;
+			} else {
+				if (curfield) {
+					curfield->align = *c;
+					do {
+						curfield = curfield->next;
+					} while (curfield && curfield->align == 'S');
+				}
+				if (c[1] == '\n') {
+					currow = next_row(currow);
+					curfield = currow->first;
+				}
+				c = c + 2;
+			}
+		} else if (*c == 'T' && c[1] == '{') {
+			h = c + 2;
+			c = strstr(h, "\nT}");
+			c++;
+			*c = '\0';
+			g = NULL;
+			scan_troff(h, 0, &g);
+			scan_troff(itemreset, 0, &g);
+			*c = 'T';
+			c += 3;
+			if (curfield) {
+				curfield->contents = g;
+				do {
+					curfield = curfield->next;
+				} while (curfield && curfield->align == 'S');
+			} else if (g)
+				free(g);
+			if (c[-1] == '\n') {
+				currow = next_row(currow);
+				curfield = currow->first;
+			}
+		} else if (*c == '.' && c[1] == 'T' && c[2] == '&' && c[-1] == '\n') {
+			TABLEROW *hr;
+
+			while (*c++ != '\n');
+			hr = currow;
+			currow = currow->prev;
+			hr->prev = NULL;
+			c = scan_format(c, &hr, &i);
+			hr->prev = currow;
+			currow->next = hr;
+			currow = hr;
+			next_row(currow);
+			curfield = currow->first;
+		} else if (*c == '.' && c[1] == 'T' && c[2] == 'E' && c[-1] == '\n') {
+			finished = 1;
+			while (*c++ != '\n');
+			if (currow->prev)
+				currow->prev->next = NULL;
+			currow->prev = NULL;
+			clear_table(currow);
+		} else if (*c == '.' && c[-1] == '\n' && !isdigit(c[1])) {
+			/*
+			 * skip troff request inside table (usually only .sp
+			 * )
+			 */
+			while (*c++ != '\n');
+		} else {
+			h = c;
+			while (*c && (*c != itemsep || c[-1] == '\\') &&
+			       (*c != '\n' || c[-1] == '\\'))
+				c++;
+			i = 0;
+			if (*c == itemsep) {
+				i = 1;
+				*c = '\n';
+			}
+			if (h[0] == '\\' && h[2] == '\n' &&
+			    (h[1] == '_' || h[1] == '^')) {
+				if (curfield) {
+					curfield->align = h[1];
+					do {
+						curfield = curfield->next;
+					} while (curfield && curfield->align == 'S');
+				}
+				h = h + 3;
+			} else {
+				g = NULL;
+				h = scan_troff(h, 1, &g);
+				scan_troff(itemreset, 0, &g);
+				if (curfield) {
+					curfield->contents = g;
+					do {
+						curfield = curfield->next;
+					} while (curfield && curfield->align == 'S');
+				} else if (g)
+					free(g);
+			}
+			if (i)
+				*c = itemsep;
+			c = h;
+			if (c[-1] == '\n') {
+				currow = next_row(currow);
+				curfield = currow->first;
+			}
+		}
+	}
+	/* calculate colspan and rowspan */
+	currow = layout;
+	while (currow->next)
+		currow = currow->next;
+	while (currow) {
+		TABLEITEM *ti, *ti1 = NULL, *ti2 = NULL;
+
+		ti = currow->first;
+		if (currow->prev)
+			ti1 = currow->prev->first;
+		while (ti) {
+			switch (ti->align) {
+			case 'S':
+				if (ti2) {
+					ti2->colspan++;
+					if (ti2->rowspan < ti->rowspan)
+						ti2->rowspan = ti->rowspan;
+				}
+				break;
+			case '^':
+				if (ti1)
+					ti1->rowspan++;
+			default:
+				if (!ti2)
+					ti2 = ti;
+				else {
+					do {
+						ti2 = ti2->next;
+					} while (ti2 && curfield->align == 'S');
+				}
+				break;
+			}
+			ti = ti->next;
+			if (ti1)
+				ti1 = ti1->next;
+		}
+		currow = currow->prev;
+	}
+	/* produce html output */
+	if (center)
+		out_html("<CENTER>");
+	if (box == 2)
+		out_html("<TABLE BORDER><TR><TD>");
+	out_html("<TABLE");
+	if (box || border) {
+		out_html(" BORDER");
+		if (!border)
+			out_html("><TR><TD><TABLE");
+		if (expand)
+			out_html(" WIDTH=100%");
+	}
+	out_html(">\n");
+	currow = layout;
+	while (currow) {
+		j = 0;
+		out_html("<TR VALIGN=top>");
+		curfield = currow->first;
+		while (curfield) {
+			if (curfield->align != 'S' && curfield->align != '^') {
+				out_html("<TD");
+				switch (curfield->align) {
+				case 'N':
+					curfield->space += 4;
+				case 'R':
+					out_html(" ALIGN=right");
+					break;
+				case 'C':
+					out_html(" ALIGN=center");
+				default:
+					break;
+				}
+				if (!curfield->valign && curfield->rowspan > 1)
+					out_html(" VALIGN=center");
+				if (curfield->colspan > 1) {
+					char    buf[5];
+
+					out_html(" COLSPAN=");
+					sprintf(buf, "%i", curfield->colspan);
+					out_html(buf);
+				}
+				if (curfield->rowspan > 1) {
+					char    buf[5];
+
+					out_html(" ROWSPAN=");
+					sprintf(buf, "%i", curfield->rowspan);
+					out_html(buf);
+				}
+				j = j + curfield->colspan;
+				out_html(">");
+				if (curfield->size)
+					out_html(change_to_size(curfield->size));
+				if (curfield->font)
+					out_html(change_to_font(curfield->font));
+				switch (curfield->align) {
+				case '=':
+					out_html("<HR><HR>");
+					break;
+				case '_':
+					out_html("<HR>");
+					break;
+				default:
+					if (curfield->contents)
+						out_html(curfield->contents);
+					break;
+				}
+				if (curfield->space)
+					for (i = 0; i < curfield->space; i++)
+						out_html("&nbsp;");
+				if (curfield->font)
+					out_html(change_to_font(0));
+				if (curfield->size)
+					out_html(change_to_size(0));
+				if (j >= maxcol && curfield->align > '@' && curfield->align != '_')
+					out_html("<BR>");
+				out_html("</TD>");
+			}
+			curfield = curfield->next;
+		}
+		out_html("</TR>\n");
+		currow = currow->next;
+	}
+	if (box && !border)
+		out_html("</TABLE>");
+	out_html("</TABLE>");
+	if (box == 2)
+		out_html("</TABLE>");
+	if (center)
+		out_html("</CENTER>\n");
+	else
+		out_html("\n");
+	if (!oldfillout)
+		out_html("<PRE>");
+	fillout = oldfillout;
+	out_html(change_to_size(oldsize));
+	out_html(change_to_font(oldfont));
+	return c;
+}
+
+static char *
+scan_expression(char *c, int *result)
+{
+	int     value = 0, value2, j = 0, sign = 1, opex = 0;
+	char    oper = 'c';
+
+	if (*c == '!') {
+		c = scan_expression(c + 1, &value);
+		value = (!value);
+	} else if (*c == 'n') {
+		c++;
+		value = NROFF;
+	} else if (*c == 't') {
+		c++;
+		value = 1 - NROFF;
+	} else if (*c == '\'' || *c == '"' || *c < ' ' || (*c == '\\' && c[1] == '(')) {
+		/*
+		 * ?string1?string2? test if string1 equals string2.
+		 */
+		char   *st1 = NULL, *st2 = NULL, *h;
+		char   *tcmp = NULL;
+		char    sep;
+
+		sep = *c;
+		if (sep == '\\') {
+			tcmp = c;
+			c = c + 3;
+		}
+		c++;
+		h = c;
+		while (*c != sep && (!tcmp || strncmp(c, tcmp, 4)))
+			c++;
+		*c = '\n';
+		scan_troff(h, 1, &st1);
+		*c = sep;
+		if (tcmp)
+			c = c + 3;
+		c++;
+		h = c;
+		while (*c != sep && (!tcmp || strncmp(c, tcmp, 4)))
+			c++;
+		*c = '\n';
+		scan_troff(h, 1, &st2);
+		*c = sep;
+		if (!st1 && !st2)
+			value = 1;
+		else if (!st1 || !st2)
+			value = 0;
+		else
+			value = (!strcmp(st1, st2));
+		if (st1)
+			free(st1);
+		if (st2)
+			free(st2);
+		if (tcmp)
+			c = c + 3;
+		c++;
+	} else {
+		while (*c && !isspace(*c) && *c != ')') {
+			opex = 0;
+			switch (*c) {
+			case '(':
+				c = scan_expression(c + 1, &value2);
+				value2 = sign * value2;
+				opex = 1;
+				break;
+			case '.':
+			case '0':
+			case '1':
+			case '2':
+			case '3':
+			case '4':
+			case '5':
+			case '6':
+			case '7':
+			case '8':
+			case '9':{
+					int     num = 0, denum = 1;
+
+					value2 = 0;
+					while (isdigit(*c))
+						value2 = value2 * 10 + ((*c++) - '0');
+					if (*c == '.') {
+						c++;
+						while (isdigit(*c)) {
+							num = num * 10 + ((*c++) - '0');
+							denum = denum * 10;
+						}
+					}
+					if (isalpha(*c)) {
+						/* scale indicator */
+						switch (*c) {
+						case 'i':	/* inch -> 10pt */
+							value2 = value2 * 10 + (num * 10 + denum / 2) / denum;
+							num = 0;
+							break;
+						default:
+							break;
+						}
+						c++;
+					}
+					value2 = value2 + (num + denum / 2) / denum;
+					value2 = sign * value2;
+					opex = 1;
+					break;
+				}
+			case '\\':
+				c = scan_escape(c + 1);
+				value2 = intresult * sign;
+				if (isalpha(*c))
+					c++;	/* scale indicator */
+				opex = 1;
+				break;
+			case '-':
+				if (oper) {
+					sign = -1;
+					c++;
+					break;
+				}
+			case '>':
+			case '<':
+			case '+':
+			case '/':
+			case '*':
+			case '%':
+			case '&':
+			case '=':
+			case ':':
+				if (c[1] == '=')
+					oper = (*c++) + 16;
+				else
+					oper = *c;
+				c++;
+				break;
+			default:
+				c++;
+				break;
+			}
+			if (opex) {
+				sign = 1;
+				switch (oper) {
+				case 'c':
+					value = value2;
+					break;
+				case '-':
+					value = value - value2;
+					break;
+				case '+':
+					value = value + value2;
+					break;
+				case '*':
+					value = value * value2;
+					break;
+				case '/':
+					if (value2)
+						value = value / value2;
+					break;
+				case '%':
+					if (value2)
+						value = value % value2;
+					break;
+				case '<':
+					value = (value < value2);
+					break;
+				case '>':
+					value = (value > value2);
+					break;
+				case '>' + 16:
+					value = (value >= value2);
+					break;
+				case '<' + 16:
+					value = (value <= value2);
+					break;
+				case '=':
+				case '=' + 16:
+					value = (value == value2);
+					break;
+				case '&':
+					value = (value && value2);
+					break;
+				case ':':
+					value = (value || value2);
+					break;
+				default:
+					fprintf(stderr, "man2html: unknown operator %c.\n", oper);
+				}
+				oper = 0;
+			}
+		}
+		if (*c == ')')
+			c++;
+	}
+	*result = value;
+	return c;
+}
+
+static void
+trans_char(char *c, char s, char t)
+{
+	char   *sl = c;
+	int     slash = 0;
+
+	while (*sl != '\n' || slash) {
+		if (!slash) {
+			if (*sl == escapesym)
+				slash = 1;
+			else if (*sl == s)
+				*sl = t;
+		} else
+			slash = 0;
+		sl++;
+	}
+}
+
+/* Remove \a from C in place.  Return modified C. */
+static char *
+unescape (char *c)
+{
+	int	i, l;
+
+	l = strlen (c);
+	i = 0;
+	while (i < l && c[i]) {
+		if (c[i] == '\a') {
+			if (c[i+1])
+				memmove (c + i, c + i + 1, l - i);
+			else {
+				c[i] = '\0';
+				break;
+			}
+		}
+		i++;
+	}
+	return c;
+}
+	
+static char *
+fill_words(char *c, char *words[], int *n)
+{
+	char   *sl = c;
+	int     slash = 0;
+	int     skipspace = 0;
+
+	*n = 0;
+	words[*n] = sl;
+	while (*sl && (*sl != '\n' || slash)) {
+		if (!slash) {
+			if (*sl == '"') {
+				*sl = '\a';
+				skipspace = !skipspace;
+			} else if (*sl == '\a') {
+				/* handle already-translated " */
+				skipspace = !skipspace;
+			} else if (*sl == escapesym)
+				slash = 1;
+			else if ((*sl == ' ' || *sl == '\t') && !skipspace) {
+				*sl = '\n';
+				if (words[*n] != sl)
+					(*n)++;
+				words[*n] = sl + 1;
+			}
+		} else {
+			if (*sl == '"') {
+				sl--;
+				*sl = '\n';
+				if (words[*n] != sl)
+					(*n)++;
+				sl++;
+				while (*sl && *sl != '\n')
+					sl++;
+				words[*n] = sl;
+				sl--;
+			}
+			slash = 0;
+		}
+		sl++;
+	}
+	if (sl != words[*n])
+		(*n)++;
+	return sl;
+}
+
+static char *abbrev_list[] = {
+	"GSBG", "Getting Started ",
+	"SUBG", "Customizing SunOS",
+	"SHBG", "Basic Troubleshooting",
+	"SVBG", "SunView User's Guide",
+	"MMBG", "Mail and Messages",
+	"DMBG", "Doing More with SunOS",
+	"UNBG", "Using the Network",
+	"GDBG", "Games, Demos &amp; Other Pursuits",
+	"CHANGE", "SunOS 4.1 Release Manual",
+	"INSTALL", "Installing SunOS 4.1",
+	"ADMIN", "System and Network Administration",
+	"SECUR", "Security Features Guide",
+	"PROM", "PROM User's Manual",
+	"DIAG", "Sun System Diagnostics",
+	"SUNDIAG", "Sundiag User's Guide",
+	"MANPAGES", "SunOS Reference Manual",
+	"REFMAN", "SunOS Reference Manual",
+	"SSI", "Sun System Introduction",
+	"SSO", "System Services Overview",
+	"TEXT", "Editing Text Files",
+	"DOCS", "Formatting Documents",
+	"TROFF", "Using <B>nroff</B> and <B>troff</B>",
+	"INDEX", "Global Index",
+	"CPG", "C Programmer's Guide",
+	"CREF", "C Reference Manual",
+	"ASSY", "Assembly Language Reference",
+	"PUL", "Programming Utilities and Libraries",
+	"DEBUG", "Debugging Tools",
+	"NETP", "Network Programming",
+	"DRIVER", "Writing Device Drivers",
+	"STREAMS", "STREAMS Programming",
+	"SBDK", "SBus Developer's Kit",
+	"WDDS", "Writing Device Drivers for the SBus",
+	"FPOINT", "Floating-Point Programmer's Guide",
+	"SVPG", "SunView 1 Programmer's Guide",
+	"SVSPG", "SunView 1 System Programmer's Guide",
+	"PIXRCT", "Pixrect Reference Manual",
+	"CGI", "SunCGI Reference Manual",
+	"CORE", "SunCore Reference Manual",
+	"4ASSY", "Sun-4 Assembly Language Reference",
+	"SARCH", "<FONT SIZE=-1>SPARC</FONT> Architecture Manual",
+	"KR", "The C Programming Language",
+NULL, NULL};
+
+static char *
+lookup_abbrev(char *c)
+{
+	int     i = 0;
+
+	if (!c)
+		return "";
+	while (abbrev_list[i] && strcmp(c, abbrev_list[i]))
+		i = i + 2;
+	if (abbrev_list[i])
+		return abbrev_list[i + 1];
+	else
+		return c;
+}
+
+static char manidx[NULL_TERMINATED(HUGE_STR_MAX)];
+static int subs = 0;
+static int mip = 0;
+static char label[5] = "lbAA";
+
+static void
+add_to_index(int level, char *item)
+{
+	char   *c = NULL;
+
+	label[3]++;
+	if (label[3] > 'Z') {
+		label[3] = 'A';
+		label[2]++;
+	}
+	if (level != subs) {
+		if (subs) {
+			strmaxcpy(manidx + mip, "</DL>\n", HUGE_STR_MAX - mip);
+			mip += 6;
+		} else {
+			strmaxcpy(manidx + mip, "<DL>\n", HUGE_STR_MAX - mip);
+			mip += 5;
+		}
+	}
+	subs = level;
+	scan_troff(item, 1, &c);
+	sprintf(manidx + mip, "<DT><A HREF=\"#%s\">%s</A><DD>\n", label, c);
+	if (c)
+		free(c);
+	while (manidx[mip])
+		mip++;
+}
+
+static char *
+skip_till_newline(char *c)
+{
+	int     lvl = 0;
+
+	while (*c && *c != '\n' || lvl > 0) {
+		if (*c == '\\') {
+			c++;
+			if (*c == '}')
+				lvl--;
+			else if (*c == '{')
+				lvl++;
+		}
+		c++;
+	}
+	c++;
+	if (lvl < 0 && newline_for_fun) {
+		newline_for_fun = newline_for_fun + lvl;
+		if (newline_for_fun < 0)
+			newline_for_fun = 0;
+	}
+	return c;
+}
+
+static void
+outputPageHeader(char *l, char *c, char *r)
+{
+	out_html("<TABLE WIDTH=100%>\n<TR>\n");
+	out_html("<TH ALIGN=LEFT width=33%>");
+	out_html(l);
+	out_html("<TH ALIGN=CENTER width=33%>");
+	out_html(c);
+	out_html("<TH ALIGN=RIGHT width=33%>");
+	out_html(r);
+	out_html("\n</TR>\n</TABLE>\n");
+}
+
+static void
+outputPageFooter(char *l, char *c, char *r)
+{
+	out_html("<HR>\n");
+	outputPageHeader(l, c, r);
+}
+
+static int ifelseval = 0;
+
+static char *
+scan_request(char *c)
+{
+	/* BSD Mandoc stuff */
+	static int mandoc_synopsis = 0;	/* True if we are in the synopsis
+					 * section */
+	static int mandoc_command = 0;	/* True if this is mandoc page */
+	static int mandoc_bd_options;	/* Only copes with non-nested Bd's */
+
+	int     i, j, mode = 0;
+	char   *h;
+	char   *wordlist[MAX_WORDLIST];
+	int     words;
+	char   *sl;
+	STRDEF *owndef;
+
+	while (*c == ' ' || *c == '\t')
+		c++;
+	if (c[0] == '\n')
+		return c + 1;
+	if (c[1] == '\n')
+		j = 1;
+	else
+		j = 2;
+	while (c[j] == ' ' || c[j] == '\t')
+		j++;
+	if (c[0] == escapesym) {
+		/* some pages use .\" .\$1 .\} */
+		/* .\$1 is too difficult/stupid */
+		if (c[1] == '$')
+			c = skip_till_newline(c);
+		else
+			c = scan_escape(c + 1);
+	} else {
+		i = V(c[0], c[1]);
+		switch (i) {
+		case V('a', 'b'):
+			h = c + j;
+			while (*h && *h != '\n')
+				h++;
+			*h = '\0';
+			if (scaninbuff && buffpos) {
+				buffer[buffpos] = '\0';
+				puts(buffer);
+			}
+			/* fprintf(stderr, "%s\n", c+2); */
+			exit(0);
+			break;
+		case V('d', 'i'):
+			{
+				STRDEF *de;
+				int     oldcurpos = curpos;
+
+				c = c + j;
+				i = V(c[0], c[1]);
+				if (*c == '\n') {
+					c++;
+					break;
+				}
+				while (*c && *c != '\n')
+					c++;
+				c++;
+				h = c;
+				while (*c && strncmp(c, ".di", 3))
+					while (*c && *c++ != '\n');
+				*c = '\0';
+				de = strdef;
+				while (de && de->nr != i)
+					de = de->next;
+				if (!de) {
+					de = (STRDEF *) xmalloc(sizeof(STRDEF));
+					de->nr = i;
+					de->slen = 0;
+					de->next = strdef;
+					de->st = NULL;
+					strdef = de;
+				} else {
+					if (de->st)
+						free(de->st);
+					de->slen = 0;
+					de->st = NULL;
+				}
+				scan_troff(h, 0, &de->st);
+				*c = '.';
+				while (*c && *c++ != '\n');
+				break;
+			}
+		case V('d', 's'):
+			mode = 1;
+		case V('a', 's'):
+			{
+				STRDEF *de;
+				int     oldcurpos = curpos;
+
+				c = c + j;
+				i = V(c[0], c[1]);
+				j = 0;
+				while (c[j] && c[j] != '\n')
+					j++;
+				if (j < 3) {
+					c = c + j;
+					break;
+				}
+				if (c[1] == ' ')
+					c = c + 1;
+				else
+					c = c + 2;
+				while (isspace(*c))
+					c++;
+				if (*c == '"')
+					c++;
+				de = strdef;
+				while (de && de->nr != i)
+					de = de->next;
+				single_escape = 1;
+				curpos = 0;
+				if (!de) {
+					char   *h;
+
+					de = (STRDEF *) xmalloc(sizeof(STRDEF));
+					de->nr = i;
+					de->slen = 0;
+					de->next = strdef;
+					de->st = NULL;
+					strdef = de;
+					h = NULL;
+					c = scan_troff(c, 1, &h);
+					de->st = h;
+					de->slen = curpos;
+				} else {
+					if (mode) {
+						char   *h = NULL;
+
+						c = scan_troff(c, 1, &h);
+						free(de->st);
+						de->slen = 0;
+						de->st = h;
+					} else
+						c = scan_troff(c, 1, &de->st);
+					de->slen += curpos;
+				}
+				single_escape = 0;
+				curpos = oldcurpos;
+			}
+			break;
+		case V('b', 'r'):
+			if (still_dd)
+				out_html("<DD>");
+			else
+				out_html("<BR>\n");
+			curpos = 0;
+			c = c + j;
+			if (c[0] == escapesym) {
+				c = scan_escape(c + 1);
+			}
+			c = skip_till_newline(c);
+			break;
+		case V('c', '2'):
+			c = c + j;
+			if (*c != '\n') {
+				nobreaksym = *c;
+			} else
+				nobreaksym = '\'';
+			c = skip_till_newline(c);
+			break;
+		case V('c', 'c'):
+			c = c + j;
+			if (*c != '\n') {
+				controlsym = *c;
+			} else
+				controlsym = '.';
+			c = skip_till_newline(c);
+			break;
+		case V('c', 'e'):
+			c = c + j;
+			if (*c == '\n') {
+				i = 1;
+			} else {
+				i = 0;
+				while ('0' <= *c && *c <= '9') {
+					i = i * 10 + *c - '0';
+					c++;
+				}
+			}
+			c = skip_till_newline(c);
+			/* center next i lines */
+			if (i > 0) {
+				out_html("<CENTER>\n");
+				while (i && *c) {
+					char   *line = NULL;
+
+					c = scan_troff(c, 1, &line);
+					if (line && strncmp(line, "<BR>", 4)) {
+						out_html(line);
+						out_html("<BR>\n");
+						i--;
+					}
+				}
+				out_html("</CENTER>\n");
+				curpos = 0;
+			}
+			break;
+		case V('e', 'c'):
+			c = c + j;
+			if (*c != '\n') {
+				escapesym = *c;
+			} else
+				escapesym = '\\';
+			break;
+			c = skip_till_newline(c);
+		case V('e', 'o'):
+			escapesym = '\0';
+			c = skip_till_newline(c);
+			break;
+		case V('e', 'x'):
+			exit(0);
+			break;
+		case V('f', 'c'):
+			c = c + j;
+			if (*c == '\n') {
+				fieldsym = padsym = '\0';
+			} else {
+				fieldsym = c[0];
+				padsym = c[1];
+			}
+			c = skip_till_newline(c);
+			break;
+		case V('f', 'i'):
+			if (!fillout) {
+				out_html(change_to_font(0));
+				out_html(change_to_size('0'));
+				out_html("</PRE>\n");
+			}
+			curpos = 0;
+			fillout = 1;
+			c = skip_till_newline(c);
+			break;
+		case V('f', 't'):
+			c = c + j;
+			if (*c == '\n') {
+				out_html(change_to_font(0));
+			} else {
+				if (*c == escapesym) {
+					int     fn;
+
+					c = scan_expression(c, &fn);
+					c--;
+					out_html(change_to_font(fn));
+				} else {
+					out_html(change_to_font(*c));
+					c++;
+				}
+			}
+			c = skip_till_newline(c);
+			break;
+		case V('e', 'l'):
+			/* .el anything : else part of if else */
+			if (ifelseval) {
+				c = c + j;
+				c[-1] = '\n';
+				c = scan_troff(c, 1, NULL);
+			} else
+				c = skip_till_newline(c + j);
+			break;
+		case V('i', 'e'):
+			/* .ie c anything : then part of if else */
+		case V('i', 'f'):
+			/*
+			 * .if c anything .if !c anything .if N anything .if
+			 * !N anything .if 'string1'string2' anything .if
+			 * !'string1'string2' anything
+			 */
+			c = c + j;
+			c = scan_expression(c, &i);
+			ifelseval = !i;
+			if (i) {
+				*c = '\n';
+				c++;
+				c = scan_troff(c, 1, NULL);
+			} else
+				c = skip_till_newline(c);
+			break;
+		case V('i', 'g'):
+			{
+				char   *endwith = "..\n";
+
+				i = 3;
+				c = c + j;
+				if (*c != '\n') {
+					endwith = c - 1;
+					i = 1;
+					c[-1] = '.';
+					while (*c && *c != '\n')
+						c++, i++;
+				}
+				c++;
+				while (*c && strncmp(c, endwith, i))
+					while (*c++ != '\n');
+				while (*c++ != '\n');
+				break;
+			}
+		case V('n', 'f'):
+			if (fillout) {
+				out_html(change_to_font(0));
+				out_html(change_to_size('0'));
+				out_html("<PRE>\n");
+			}
+			curpos = 0;
+			fillout = 0;
+			c = skip_till_newline(c);
+			break;
+		case V('p', 's'):
+			c = c + j;
+			if (*c == '\n') {
+				out_html(change_to_size('0'));
+			} else {
+				j = 0;
+				i = 0;
+				if (*c == '-') {
+					j = -1;
+					c++;
+				} else if (*c == '+') {
+					j = 1;
+					c++;
+				}
+				c = scan_expression(c, &i);
+				if (!j) {
+					j = 1;
+					if (i > 5)
+						i = i - 10;
+				}
+				out_html(change_to_size(i * j));
+			}
+			c = skip_till_newline(c);
+			break;
+		case V('s', 'p'):
+			c = c + j;
+			if (fillout)
+				out_html("<P>");
+			else {
+				out_html(NEWLINE);
+				NEWLINE[0] = '\n';
+			}
+			curpos = 0;
+			c = skip_till_newline(c);
+			break;
+		case V('s', 'o'):
+			{
+				FILE   *f;
+				struct stat stbuf;
+				int     l = 0;
+				char   *buf;
+				char   *name = NULL;
+
+				curpos = 0;
+				c = c + j;
+				if (*c == '/') {
+					h = c;
+				} else {
+					h = c - 3;
+					h[0] = '.';
+					h[1] = '.';
+					h[2] = '/';
+				}
+				while (*c != '\n')
+					c++;
+				*c = '\0';
+				scan_troff(h, 1, &name);
+				if (name[3] == '/')
+					h = name + 3;
+				else
+					h = name;
+				if (stat(h, &stbuf) != -1)
+					l = stbuf.st_size;
+#if NOCGI
+				if (!out_length) {
+					char   *t, *s;
+
+					t = strrchr(fname, '/');
+					if (!t)
+						t = fname;
+					fprintf(stderr, "ln -s %s.html %s.html\n", h, t);
+					s = strrchr(t, '.');
+					if (!s)
+						s = t;
+					printf("<HTML><HEAD><TITLE> Manpage of %s</TITLE>\n"
+					       "</HEAD><BODY>\n"
+					       "See the manpage for <A HREF=\"%s.html\">%s</A>.\n"
+					       "</BODY></HTML>\n",
+					       s, h, h);
+				} else
+#endif
+				{
+					/*
+					 * this works alright, except for
+					 * section 3
+					 */
+					buf = read_man_page(h);
+					if (!buf) {
+
+						fprintf(stderr, "man2html: unable to open or read file %s.\n",
+							h);
+						out_html("<BLOCKQUOTE>"
+							 "man2html: unable to open or read file.\n");
+						out_html(h);
+						out_html("</BLOCKQUOTE>\n");
+					} else {
+						buf[0] = buf[l] = '\n';
+						buf[l + 1] = buf[l + 2] = '\0';
+						scan_troff(buf + 1, 0, NULL);
+					}
+					if (buf)
+						free(buf);
+				}
+				*c++ = '\n';
+				break;
+			}
+		case V('t', 'a'):
+			c = c + j;
+			j = 0;
+			while (*c != '\n') {
+				sl = scan_expression(c, &tabstops[j]);
+				if (*c == '-' || *c == '+')
+					tabstops[j] += tabstops[j - 1];
+				c = sl;
+				while (*c == ' ' || *c == '\t')
+					c++;
+				j++;
+			}
+			maxtstop = j;
+			curpos = 0;
+			break;
+		case V('t', 'i'):
+			/*
+			 * while (itemdepth || dl_set[itemdepth]) {
+			 * out_html("</DL>\n"); if (dl_set[itemdepth])
+			 * dl_set[itemdepth]=0; else itemdepth--; }
+			 */
+			out_html("<BR>\n");
+			c = c + j;
+			c = scan_expression(c, &j);
+			for (i = 0; i < j; i++)
+				out_html("&nbsp;");
+			curpos = j;
+			c = skip_till_newline(c);
+			break;
+		case V('t', 'm'):
+			c = c + j;
+			h = c;
+			while (*c != '\n')
+				c++;
+			*c = '\0';
+			/* fprintf(stderr,"%s\n", h); */
+			*c = '\n';
+			break;
+		case V('B', ' '):
+		case V('B', '\n'):
+		case V('I', ' '):
+		case V('I', '\n'):
+			/* parse one line in a certain font */
+			out_html(change_to_font(*c));
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			c = scan_troff(c, 1, NULL);
+			out_html(change_to_font('R'));
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('O', 'P'):	/* groff manpages use this
+					 * construction */
+			/* .OP a b : [ <B>a</B> <I>b</I> ] */
+			mode = 1;
+			c[0] = 'B';
+			c[1] = 'I';
+			out_html(change_to_font('R'));
+			out_html("[");
+			curpos++;
+		case V('B', 'R'):
+		case V('B', 'I'):
+		case V('I', 'B'):
+		case V('I', 'R'):
+		case V('R', 'B'):
+		case V('R', 'I'):
+			{
+				char    font[2];
+
+				font[0] = c[0];
+				font[1] = c[1];
+				c = c + j;
+				if (*c == '\n')
+					c++;
+				sl = fill_words(c, wordlist, &words);
+				c = sl + 1;
+				/*
+				 * .BR name (section) indicates a link. It
+				 * will be added in the output routine.
+				 */
+				for (i = 0; i < words; i++) {
+					if (mode) {
+						out_html(" ");
+						curpos++;
+					}
+					wordlist[i][-1] = ' ';
+					out_html(change_to_font(font[i & 1]));
+					scan_troff(wordlist[i], 1, NULL);
+				}
+				out_html(change_to_font('R'));
+				if (mode) {
+					out_html(" ]");
+					curpos++;
+				}
+				out_html(NEWLINE);
+				if (!fillout)
+					curpos = 0;
+				else
+					curpos++;
+			}
+			break;
+		case V('D', 'T'):
+			for (j = 0; j < 20; j++)
+				tabstops[j] = (j + 1) * 8;
+			maxtstop = 20;
+			c = skip_till_newline(c);
+			break;
+		case V('I', 'P'):
+			sl = fill_words(c + j, wordlist, &words);
+			c = sl + 1;
+			if (!dl_set[itemdepth]) {
+				out_html("<DL COMPACT>\n");
+				dl_set[itemdepth] = 1;
+			}
+			out_html("<DT>");
+			if (words) {
+				scan_troff(wordlist[0], 1, NULL);
+			}
+			out_html("<DD>");
+			curpos = 0;
+			break;
+		case V('T', 'P'):
+			if (!dl_set[itemdepth]) {
+				out_html("<DL COMPACT>\n");
+				dl_set[itemdepth] = 1;
+			}
+			out_html("<DT>");
+			c = skip_till_newline(c);
+			/* somewhere a definition ends with '.TP' */
+			if (!*c)
+				still_dd = 1;
+			else {
+				c = scan_troff(c, 1, NULL);
+				out_html("<DD>");
+			}
+			curpos = 0;
+			break;
+		case V('I', 'X'):
+			/* general index */
+			sl = fill_words(c + j, wordlist, &words);
+			c = sl + 1;
+			j = 4;
+			while (idxlabel[j] == 'Z')
+				idxlabel[j--] = 'A';
+			idxlabel[j]++;
+#ifdef MAKEINDEX
+			fprintf(idxfile, "%s@%s@", fname, idxlabel);
+			for (j = 0; j < words; j++) {
+				h = NULL;
+				scan_troff(wordlist[j], 1, &h);
+				fprintf(idxfile, "_\b@%s", h);
+				free(h);
+			}
+			fprintf(idxfile, "\n");
+#endif
+			out_html("<A NAME=\"");
+			out_html(idxlabel);
+			/*
+			 * this will not work in mosaic (due to a bug).
+			 * Adding '&nbsp;' between '>' and '<' solves it, but
+			 * creates some space. A normal space does not work.
+			 */
+			out_html("\"></A>");
+			break;
+		case V('L', 'P'):
+		case V('P', 'P'):
+			if (dl_set[itemdepth]) {
+				out_html("</DL>\n");
+				dl_set[itemdepth] = 0;
+			}
+			if (fillout)
+				out_html("<P>\n");
+			else {
+				out_html(NEWLINE);
+				NEWLINE[0] = '\n';
+			}
+			curpos = 0;
+			c = skip_till_newline(c);
+			break;
+		case V('H', 'P'):
+			if (!dl_set[itemdepth]) {
+				out_html("<DL COMPACT>");
+				dl_set[itemdepth] = 1;
+			}
+			out_html("<DT>\n");
+			still_dd = 1;
+			c = skip_till_newline(c);
+			curpos = 0;
+			break;
+		case V('P', 'D'):
+			c = skip_till_newline(c);
+			break;
+		case V('R', 's'):	/* BSD mandoc */
+		case V('R', 'S'):
+			sl = fill_words(c + j, wordlist, &words);
+			j = 1;
+			if (words > 0)
+				scan_expression(wordlist[0], &j);
+			if (j >= 0) {
+				itemdepth++;
+				dl_set[itemdepth] = 0;
+				out_html("<DL COMPACT><DT><DD>");
+				c = skip_till_newline(c);
+				curpos = 0;
+				break;
+			}
+		case V('R', 'e'):	/* BSD mandoc */
+		case V('R', 'E'):
+			if (itemdepth > 0) {
+				if (dl_set[itemdepth])
+					out_html("</DL>");
+				out_html("</DL>\n");
+				itemdepth--;
+			}
+			c = skip_till_newline(c);
+			curpos = 0;
+			break;
+		case V('S', 'B'):
+			out_html(change_to_size(-1));
+			out_html(change_to_font('B'));
+			c = scan_troff(c + j, 1, NULL);
+			out_html(change_to_font('R'));
+			out_html(change_to_size('0'));
+			break;
+		case V('S', 'M'):
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			out_html(change_to_size(-1));
+			trans_char(c, '"', '\a');
+			c = scan_troff(c, 1, NULL);
+			out_html(change_to_size('0'));
+			break;
+		case V('S', 's'):	/* BSD mandoc */
+			mandoc_command = 1;
+		case V('S', 'S'):
+			mode = 1;
+		case V('S', 'h'):	/* BSD mandoc */
+			/* hack for fallthru from above */
+			mandoc_command = !mode || mandoc_command;
+		case V('S', 'H'):
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			while (itemdepth || dl_set[itemdepth]) {
+				out_html("</DL>\n");
+				if (dl_set[itemdepth])
+					dl_set[itemdepth] = 0;
+				else if (itemdepth > 0)
+					itemdepth--;
+			}
+			out_html(change_to_font(0));
+			out_html(change_to_size(0));
+			if (!fillout) {
+				fillout = 1;
+				out_html("</PRE>");
+			}
+			trans_char(c, '"', '\a');
+			add_to_index(mode, c);
+			out_html("<A NAME=\"");
+			out_html(label);
+			/* &nbsp; for mosaic users */
+			if (mode)
+				out_html("\">&nbsp;</A>\n<H4>");
+			else
+				out_html("\">&nbsp;</A>\n<H3>");
+			mandoc_synopsis = strncmp(c, "SYNOPSIS", 8) == 0;
+			c = mandoc_command ? scan_troff_mandoc(c, 1, NULL) : scan_troff(c, 1, NULL);
+			if (mode)
+				out_html("</H4>\n");
+			else
+				out_html("</H3>\n");
+			curpos = 0;
+			break;
+		case V('T', 'S'):
+			c = scan_table(c);
+			break;
+		case V('D', 't'):	/* BSD mandoc */
+			mandoc_command = 1;
+		case V('T', 'H'):
+			if (!output_possible) {
+				sl = fill_words(c + j, wordlist, &words);
+				if (words > 1) {
+					char	*t;
+					for (i = 1; i < words; i++)
+						wordlist[i][-1] = '\0';
+					*sl = '\0';
+					output_possible = 1;
+					sprintf(th_page_and_sec, "%s(%s)", wordlist[0], wordlist[1]);
+					if (words > 2) {
+						t = unescape(wordlist[2]);
+						strncpy(th_datestr, t, sizeof(th_datestr));
+						th_datestr[sizeof(th_datestr) - 1] = '\0';
+					} else
+						th_datestr[0] = '\0';
+					if (words > 3) {
+						t = unescape(wordlist[3]);
+						strncpy(th_version, t, sizeof(th_version));
+						th_version[sizeof(th_version) - 1] = '\0';
+					} else
+						th_version[0] = '\0';
+					out_html("<HTML><HEAD>\n<TITLE>");
+					out_html(th_page_and_sec);
+					out_html(" Manual Page");
+					out_html("</TITLE>\n</HEAD>\n<BODY>");
+
+					outputPageHeader(th_page_and_sec, th_datestr, th_page_and_sec);
+					
+					out_html("<BR><A HREF=\"#index\">Index</A>\n");
+					*sl = '\n';
+					out_html("<HR>\n");
+					if (mandoc_command)
+						out_html("<BR>BSD mandoc<BR>");
+				}
+				c = sl + 1;
+			} else
+				c = skip_till_newline(c);
+			curpos = 0;
+			break;
+		case V('T', 'X'):
+			sl = fill_words(c + j, wordlist, &words);
+			*sl = '\0';
+			out_html(change_to_font('I'));
+			if (words > 1)
+				wordlist[1][-1] = '\0';
+			c = lookup_abbrev(wordlist[0]);
+			curpos += strlen(c);
+			out_html(c);
+			out_html(change_to_font('R'));
+			if (words > 1)
+				out_html(wordlist[1]);
+			*sl = '\n';
+			c = sl + 1;
+			break;
+		case V('r', 'm'):
+			/* .rm xx : Remove request, macro or string */
+		case V('r', 'n'):
+			/*
+			 * .rn xx yy : Rename request, macro or string xx to
+			 * yy
+			 */
+			{
+				STRDEF *de;
+
+				c = c + j;
+				i = V(c[0], c[1]);
+				c = c + 2;
+				while (isspace(*c) && *c != '\n')
+					c++;
+				j = V(c[0], c[1]);
+				while (*c && *c != '\n')
+					c++;
+				c++;
+				de = strdef;
+				while (de && de->nr != j)
+					de = de->next;
+				if (de) {
+					if (de->st)
+						free(de->st);
+					de->nr = 0;
+				}
+				de = strdef;
+				while (de && de->nr != i)
+					de = de->next;
+				if (de)
+					de->nr = j;
+				break;
+			}
+		case V('n', 'x'):
+			/* .nx filename : next file. */
+		case V('i', 'n'):
+			/* .in +-N : Indent */
+			c = skip_till_newline(c);
+			break;
+		case V('n', 'r'):
+			/*
+			 * .nr R +-N M: define and set number register R by
+			 * +-N; auto-increment by M
+			 */
+			{
+				INTDEF *intd;
+
+				c = c + j;
+				i = V(c[0], c[1]);
+				c = c + 2;
+				intd = intdef;
+				while (intd && intd->nr != i)
+					intd = intd->next;
+				if (!intd) {
+					intd = (INTDEF *) xmalloc(sizeof(INTDEF));
+					intd->nr = i;
+					intd->val = 0;
+					intd->incr = 0;
+					intd->next = intdef;
+					intdef = intd;
+				}
+				while (*c == ' ' || *c == '\t')
+					c++;
+				c = scan_expression(c, &intd->val);
+				if (*c != '\n') {
+					while (*c == ' ' || *c == '\t')
+						c++;
+					c = scan_expression(c, &intd->incr);
+				}
+				c = skip_till_newline(c);
+				break;
+			}
+		case V('a', 'm'):
+			/* .am xx yy : append to a macro. */
+			/* define or handle as .ig yy */
+			mode = 1;
+		case V('d', 'e'):
+			/*
+			 * .de xx yy : define or redefine macro xx; end at
+			 * .yy (..)
+			 */
+			/* define or handle as .ig yy */
+			{
+				STRDEF *de;
+				int     olen = 0;
+
+				c = c + j;
+				sl = fill_words(c, wordlist, &words);
+				i = V(c[0], c[1]);
+				j = 2;
+				if (words == 1)
+					wordlist[1] = "..";
+				else {
+					wordlist[1]--;
+					wordlist[1][0] = '.';
+					j = 3;
+				}
+				c = sl + 1;
+				sl = c;
+				while (*c && strncmp(c, wordlist[1], j))
+					c = skip_till_newline(c);
+				de = defdef;
+				while (de && de->nr != i)
+					de = de->next;
+				if (mode && de)
+					olen = strlen(de->st);
+				j = olen + c - sl;
+				h = stralloc(j * 2 + 4);
+				if (h) {
+					for (j = 0; j < olen; j++)
+						h[j] = de->st[j];
+					if (!j || h[j - 1] != '\n')
+						h[j++] = '\n';
+					while (sl != c) {
+						if (sl[0] == '\\' && sl[1] == '\\') {
+							h[j++] = '\\';
+							sl++;
+						} else
+							h[j++] = *sl;
+						sl++;
+					}
+					h[j] = '\0';
+					if (de) {
+						if (de->st)
+							free(de->st);
+						de->st = h;
+					} else {
+						de = (STRDEF *) xmalloc(sizeof(STRDEF));
+						de->nr = i;
+						de->next = defdef;
+						de->st = h;
+						defdef = de;
+					}
+				}
+			}
+			c = skip_till_newline(c);
+			break;
+		case V('B', 'l'):	/* BSD mandoc */
+			{
+				char    list_options[NULL_TERMINATED(MED_STR_MAX)];
+				char   *nl = strchr(c, '\n');
+
+				c = c + j;
+				if (dl_set[itemdepth]) {	/* These things can
+								 * nest. */
+					itemdepth++;
+				}
+				if (nl) {	/* Parse list options */
+					strlimitcpy(list_options, c, nl - c, MED_STR_MAX);
+				}
+				if (strstr(list_options, "-bullet")) {	/* HTML Unnumbered List */
+					dl_set[itemdepth] = BL_BULLET_LIST;
+					out_html("<UL>\n");
+				} else if (strstr(list_options, "-enum")) {	/* HTML Ordered List */
+					dl_set[itemdepth] = BL_ENUM_LIST;
+					out_html("<OL>\n");
+				} else {	/* HTML Descriptive List */
+					dl_set[itemdepth] = BL_DESC_LIST;
+					out_html("<DL COMPACT>\n");
+				}
+				if (fillout)
+					out_html("<P>\n");
+				else {
+					out_html(NEWLINE);
+					NEWLINE[0] = '\n';
+				}
+				curpos = 0;
+				c = skip_till_newline(c);
+				break;
+			}
+		case V('E', 'l'):	/* BSD mandoc */
+			c = c + j;
+			if (dl_set[itemdepth] & BL_DESC_LIST) {
+				out_html("</DL>\n");
+			} else if (dl_set[itemdepth] & BL_BULLET_LIST) {
+				out_html("</UL>\n");
+			} else if (dl_set[itemdepth] & BL_ENUM_LIST) {
+				out_html("</OL>\n");
+			}
+			dl_set[itemdepth] = 0;
+			if (itemdepth > 0)
+				itemdepth--;
+			if (fillout)
+				out_html("<P>\n");
+			else {
+				out_html(NEWLINE);
+				NEWLINE[0] = '\n';
+			}
+			curpos = 0;
+			c = skip_till_newline(c);
+			break;
+		case V('I', 't'):	/* BSD mandoc */
+			c = c + j;
+			if (strncmp(c, "Xo", 2) == 0 && isspace(*(c + 2))) {
+				c = skip_till_newline(c);
+			}
+			if (dl_set[itemdepth] & BL_DESC_LIST) {
+				out_html("<DT>");
+				out_html(change_to_font('B'));
+				if (*c == '\n') {	/* Don't allow embedded
+							 * comms after a newline */
+					c++;
+					c = scan_troff(c, 1, NULL);
+				} else {	/* Do allow embedded comms on
+						 * the same line. */
+					c = scan_troff_mandoc(c, 1, NULL);
+				}
+				out_html(change_to_font('R'));
+				out_html(NEWLINE);
+				out_html("<DD>");
+			} else if (dl_set[itemdepth] & (BL_BULLET_LIST | BL_ENUM_LIST)) {
+				out_html("<LI>");
+				c = scan_troff_mandoc(c, 1, NULL);
+				out_html(NEWLINE);
+			}
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('B', 'k'):	/* BSD mandoc */
+		case V('E', 'k'):	/* BSD mandoc */
+		case V('D', 'd'):	/* BSD mandoc */
+		case V('O', 's'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('B', 't'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			out_html(" is currently in beta test.");
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('B', 'x'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			out_html("BSD ");
+			c = scan_troff_mandoc(c, 1, NULL);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('D', 'l'):	/* BSD mandoc */
+			c = c + j;
+			out_html(NEWLINE);
+			out_html("<BLOCKQUOTE>");
+			out_html(change_to_font('L'));
+			if (*c == '\n')
+				c++;
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html(change_to_font('R'));
+			out_html("</BLOCKQUOTE>");
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('B', 'd'):	/* BSD mandoc */
+			{	/* Seems like a kind of example/literal mode */
+				char    bd_options[NULL_TERMINATED(MED_STR_MAX)];
+				char   *nl = strchr(c, '\n');
+
+				c = c + j;
+				if (nl) {
+					strlimitcpy(bd_options, c, nl - c, MED_STR_MAX);
+				}
+				out_html(NEWLINE);
+				mandoc_bd_options = 0;	/* Remember options for
+							 * terminating Bl */
+				if (strstr(bd_options, "-offset indent")) {
+					mandoc_bd_options |= BD_INDENT;
+					out_html("<BLOCKQUOTE>\n");
+				}
+				if (strstr(bd_options, "-literal")
+				    || strstr(bd_options, "-unfilled")) {
+					if (fillout) {
+						mandoc_bd_options |= BD_LITERAL;
+						out_html(change_to_font(0));
+						out_html(change_to_size('0'));
+						out_html("<PRE>\n");
+					}
+					curpos = 0;
+					fillout = 0;
+				}
+				c = skip_till_newline(c);
+				break;
+			}
+		case V('E', 'd'):	/* BSD mandoc */
+			if (mandoc_bd_options & BD_LITERAL) {
+				if (!fillout) {
+					out_html(change_to_font(0));
+					out_html(change_to_size('0'));
+					out_html("</PRE>\n");
+				}
+			}
+			if (mandoc_bd_options & BD_INDENT)
+				out_html("</BLOCKQUOTE>\n");
+			curpos = 0;
+			fillout = 1;
+			c = skip_till_newline(c);
+			break;
+		case V('B', 'e'):	/* BSD mandoc */
+			c = c + j;
+			if (fillout)
+				out_html("<P>");
+			else {
+				out_html(NEWLINE);
+				NEWLINE[0] = '\n';
+			}
+			curpos = 0;
+			c = skip_till_newline(c);
+			break;
+		case V('X', 'r'):	/* BSD mandoc */
+			{
+				/*
+				 * Translate xyz 1 to xyz(1) Allow for
+				 * multiple spaces.  Allow the section to be
+				 * missing.
+				 */
+				char    buff[NULL_TERMINATED(MED_STR_MAX)];
+				char   *bufptr;
+
+				trans_char(c, '"', '\a');
+				bufptr = buff;
+				c = c + j;
+				if (*c == '\n')
+					c++;	/* Skip spaces */
+				while (isspace(*c) && *c != '\n')
+					c++;
+				while (isalnum(*c)) {	/* Copy the xyz part */
+					*bufptr = *c;
+					bufptr++;
+					if (bufptr >= buff + MED_STR_MAX)
+						break;
+					c++;
+				}
+				while (isspace(*c) && *c != '\n')
+					c++;	/* Skip spaces */
+				if (isdigit(*c)) {	/* Convert the number if
+							 * there is one */
+					*bufptr = '(';
+					bufptr++;
+					if (bufptr < buff + MED_STR_MAX) {
+						while (isalnum(*c)) {
+							*bufptr = *c;
+							bufptr++;
+							if (bufptr >= buff + MED_STR_MAX)
+								break;
+							c++;
+						}
+						if (bufptr < buff + MED_STR_MAX) {
+							*bufptr = ')';
+							bufptr++;
+						}
+					}
+				}
+				while (*c != '\n') {	/* Copy the remainder */
+					if (!isspace(*c)) {
+						*bufptr = *c;
+						bufptr++;
+						if (bufptr >= buff + MED_STR_MAX)
+							break;
+					}
+					c++;
+				}
+				*bufptr = '\n';
+				scan_troff_mandoc(buff, 1, NULL);
+
+				out_html(NEWLINE);
+				if (fillout)
+					curpos++;
+				else
+					curpos = 0;
+			}
+			break;
+		case V('F', 'l'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			out_html("-");
+			if (*c != '\n') {
+				out_html(change_to_font('B'));
+				c = scan_troff_mandoc(c, 1, NULL);
+				out_html(change_to_font('R'));
+			}
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('P', 'a'):	/* BSD mandoc */
+		case V('P', 'f'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('P', 'p'):	/* BSD mandoc */
+			if (fillout)
+				out_html("<P>\n");
+			else {
+				out_html(NEWLINE);
+				NEWLINE[0] = '\n';
+			}
+			curpos = 0;
+			c = skip_till_newline(c);
+			break;
+		case V('D', 'q'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			out_html("``");
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html("''");
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('O', 'p'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			out_html(change_to_font('R'));
+			out_html("[");
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html(change_to_font('R'));
+			out_html("]");
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('O', 'o'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			out_html(change_to_font('R'));
+			out_html("[");
+			c = scan_troff_mandoc(c, 1, NULL);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('O', 'c'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html(change_to_font('R'));
+			out_html("]");
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('P', 'q'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			out_html("(");
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html(")");
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('Q', 'l'):	/* BSD mandoc */
+			{	/* Single quote first word in the line */
+				char   *sp;
+
+				trans_char(c, '"', '\a');
+				c = c + j;
+				if (*c == '\n')
+					c++;
+				sp = c;
+				do {	/* Find first whitespace after the
+					 * first word that isn't a mandoc
+					 * macro */
+					while (*sp && isspace(*sp))
+						sp++;
+					while (*sp && !isspace(*sp))
+						sp++;
+				} while (*sp && isupper(*(sp - 2)) && islower(*(sp - 1)));
+
+				/*
+				 * Use a newline to mark the end of text to
+				 * be quoted
+				 */
+				if (*sp)
+					*sp = '\n';
+				out_html("`");	/* Quote the text */
+				c = scan_troff_mandoc(c, 1, NULL);
+				out_html("'");
+				out_html(NEWLINE);
+				if (fillout)
+					curpos++;
+				else
+					curpos = 0;
+				break;
+			}
+		case V('S', 'q'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			out_html("`");
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html("'");
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('A', 'r'):	/* BSD mandoc */
+			/* parse one line in italics */
+			out_html(change_to_font('I'));
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n') {	/* An empty Ar means "file
+						 * ..." */
+				out_html("file ...");
+			} else {
+				c = scan_troff_mandoc(c, 1, NULL);
+			}
+			out_html(change_to_font('R'));
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('A', 'd'):	/* BSD mandoc */
+		case V('E', 'm'):	/* BSD mandoc */
+		case V('V', 'a'):	/* BSD mandoc */
+		case V('X', 'c'):	/* BSD mandoc */
+			/* parse one line in italics */
+			out_html(change_to_font('I'));
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html(change_to_font('R'));
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('N', 'd'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			out_html(" - ");
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('N', 'm'):	/* BSD mandoc */
+			{
+				static char mandoc_name[NULL_TERMINATED(SMALL_STR_MAX)] = "";
+
+				trans_char(c, '"', '\a');
+				c = c + j;
+				if (mandoc_synopsis) {	/* Break lines only in
+							 * the Synopsis. The
+							 * Synopsis section
+							 * seems to be treated
+							 * as a special case -
+							 * Bummer! */
+					static int count = 0;	/* Don't break on the
+								 * first Nm */
+
+					if (count) {
+						out_html("<BR>");
+					} else {
+						char   *end = strchr(c, '\n');
+
+						if (end) {	/* Remember the name for
+								 * later. */
+							strlimitcpy(mandoc_name, c, end - c, SMALL_STR_MAX);
+						}
+					}
+					count++;
+				}
+				out_html(change_to_font('B'));
+				while (*c == ' ' || *c == '\t')
+					c++;
+				if (*c == '\n') {	/* If Nm has no
+							 * argument, use one
+							 * from an earlier Nm
+							 * command that did have
+							 * one.  Hope there
+							 * aren't too many
+							 * commands that do
+							 * this. */
+					out_html(mandoc_name);
+				} else {
+					c = scan_troff_mandoc(c, 1, NULL);
+				}
+				out_html(change_to_font('R'));
+				out_html(NEWLINE);
+				if (fillout)
+					curpos++;
+				else
+					curpos = 0;
+				break;
+			}
+		case V('C', 'd'):	/* BSD mandoc */
+		case V('C', 'm'):	/* BSD mandoc */
+		case V('I', 'c'):	/* BSD mandoc */
+		case V('M', 's'):	/* BSD mandoc */
+		case V('O', 'r'):	/* BSD mandoc */
+		case V('S', 'y'):	/* BSD mandoc */
+			/* parse one line in bold */
+			out_html(change_to_font('B'));
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html(change_to_font('R'));
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('D', 'v'):	/* BSD mandoc */
+		case V('E', 'v'):	/* BSD mandoc */
+		case V('F', 'r'):	/* BSD mandoc */
+		case V('L', 'i'):	/* BSD mandoc */
+		case V('N', 'o'):	/* BSD mandoc */
+		case V('N', 's'):	/* BSD mandoc */
+		case V('T', 'n'):	/* BSD mandoc */
+		case V('n', 'N'):	/* BSD mandoc */
+			trans_char(c, '"', '\a');
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			out_html(change_to_font('B'));
+			c = scan_troff_mandoc(c, 1, NULL);
+			out_html(change_to_font('R'));
+			out_html(NEWLINE);
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('%', 'A'):	/* BSD mandoc biblio stuff */
+		case V('%', 'D'):
+		case V('%', 'N'):
+		case V('%', 'O'):
+		case V('%', 'P'):
+		case V('%', 'Q'):
+		case V('%', 'V'):
+			c = c + j;
+			if (*c == '\n')
+				c++;
+			c = scan_troff(c, 1, NULL);	/* Don't allow embedded
+							 * mandoc coms */
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		case V('%', 'B'):
+		case V('%', 'J'):
+		case V('%', 'R'):
+		case V('%', 'T'):
+			c = c + j;
+			out_html(change_to_font('I'));
+			if (*c == '\n')
+				c++;
+			c = scan_troff(c, 1, NULL);	/* Don't allow embedded
+							 * mandoc coms */
+			out_html(change_to_font('R'));
+			if (fillout)
+				curpos++;
+			else
+				curpos = 0;
+			break;
+		default:
+			/* search macro database of self-defined macros */
+			owndef = defdef;
+			while (owndef && owndef->nr != i)
+				owndef = owndef->next;
+			if (owndef) {
+				char  **oldargument;
+				int     deflen;
+				int     onff;
+
+				sl = fill_words(c + j, wordlist, &words);
+				c = sl + 1;
+				*sl = '\0';
+				for (i = 1; i < words; i++)
+					wordlist[i][-1] = '\0';
+				for (i = 0; i < words; i++) {
+					char   *h = NULL;
+
+					if (mandoc_command) {
+						scan_troff_mandoc(wordlist[i], 1, &h);
+					} else {
+						scan_troff(wordlist[i], 1, &h);
+					}
+					wordlist[i] = h;
+				}
+				for (i = words; i < 20; i++)
+					wordlist[i] = NULL;
+				deflen = strlen(owndef->st);
+				for (i = 0; owndef->st[deflen + 2 + i] = owndef->st[i]; i++);
+				oldargument = argument;
+				argument = wordlist;
+				onff = newline_for_fun;
+				if (mandoc_command) {
+					scan_troff_mandoc(owndef->st + deflen + 2, 0, NULL);
+				} else {
+					scan_troff(owndef->st + deflen + 2, 0, NULL);
+				}
+				newline_for_fun = onff;
+				argument = oldargument;
+				for (i = 0; i < words; i++)
+					if (wordlist[i])
+						free(wordlist[i]);
+				*sl = '\n';
+			} else if (mandoc_command &&
+				   ((isupper(*c) && islower(*(c + 1)))
+				    || (islower(*c) && isupper(*(c + 1))))
+				) {	/* Let through any BSD mandoc
+					 * commands that haven't been delt
+					 * with. I don't want to miss
+					 * anything out of the text. */
+				char    buf[4];
+
+				strncpy(buf, c, 2);
+				buf[2] = ' ';
+				buf[3] = '\0';
+				out_html(buf);	/* Print the command (it
+						 * might just be text). */
+				c = c + j;
+				trans_char(c, '"', '\a');
+				if (*c == '\n')
+					c++;
+				out_html(change_to_font('R'));
+				c = scan_troff(c, 1, NULL);
+				out_html(NEWLINE);
+				if (fillout)
+					curpos++;
+				else
+					curpos = 0;
+			} else {
+				c = skip_till_newline(c);
+			}
+			break;
+		}
+	}
+	if (fillout) {
+		out_html(NEWLINE);
+		curpos++;
+	}
+	NEWLINE[0] = '\n';
+	return c;
+}
+
+static void
+flush(void)
+{
+}
+
+static int contained_tab = 0;
+static int mandoc_line = 0;	/* Signals whether to look for embedded
+				 * mandoc commands. */
+
+/* san : stop at newline */
+static char *
+scan_troff(char *c, int san, char **result)
+{
+	char   *h;
+	char    intbuff[NULL_TERMINATED(MED_STR_MAX)];
+	int     ibp = 0;
+	int     i;
+	char   *exbuffer;
+	int     exbuffpos, exbuffmax, exscaninbuff, exnewline_for_fun;
+	int     usenbsp = 0;
+
+#define FLUSHIBP  if (ibp) { intbuff[ibp]=0; out_html(intbuff); ibp=0; }
+
+	exbuffer = buffer;
+	exbuffpos = buffpos;
+	exbuffmax = buffmax;
+	exnewline_for_fun = newline_for_fun;
+	exscaninbuff = scaninbuff;
+	newline_for_fun = 0;
+	if (result) {
+		if (*result) {
+			buffer = *result;
+			buffpos = strlen(buffer);
+			buffmax = buffpos;
+		} else {
+			buffer = stralloc(LARGE_STR_MAX);
+			buffpos = 0;
+			buffmax = LARGE_STR_MAX;
+		}
+		scaninbuff = 1;
+	}
+	h = c;
+	/* start scanning */
+
+	while (*h && (!san || newline_for_fun || *h != '\n')) {
+
+		if (*h == escapesym) {
+			h++;
+			FLUSHIBP;
+			h = scan_escape(h);
+		} else if (*h == controlsym && h[-1] == '\n') {
+			h++;
+			FLUSHIBP;
+			h = scan_request(h);
+			if (san && h[-1] == '\n')
+				h--;
+		} else if (mandoc_line
+			   && *(h) && isupper(*(h))
+			   && *(h + 1) && islower(*(h + 1))
+			   && *(h + 2) && isspace(*(h + 2))) {
+			/*
+			 * BSD embedded command eg ".It Fl Ar arg1 Fl Ar
+			 * arg2"
+			 */
+			FLUSHIBP;
+			h = scan_request(h);
+			if (san && h[-1] == '\n')
+				h--;
+		} else if (*h == nobreaksym && h[-1] == '\n') {
+			h++;
+			FLUSHIBP;
+			h = scan_request(h);
+			if (san && h[-1] == '\n')
+				h--;
+		} else {
+			int     mx;
+
+			if (h[-1] == '\n' && still_dd && isalnum(*h)) {
+				/*
+				 * sometimes a .HP request is not followed by
+				 * a .br request
+				 */
+				FLUSHIBP;
+				out_html("<DD>");
+				curpos = 0;
+				still_dd = 0;
+			}
+			switch (*h) {
+			case '&':
+				intbuff[ibp++] = '&';
+				intbuff[ibp++] = 'a';
+				intbuff[ibp++] = 'm';
+				intbuff[ibp++] = 'p';
+				intbuff[ibp++] = ';';
+				curpos++;
+				break;
+			case '<':
+				intbuff[ibp++] = '&';
+				intbuff[ibp++] = 'l';
+				intbuff[ibp++] = 't';
+				intbuff[ibp++] = ';';
+				curpos++;
+				break;
+			case '>':
+				intbuff[ibp++] = '&';
+				intbuff[ibp++] = 'g';
+				intbuff[ibp++] = 't';
+				intbuff[ibp++] = ';';
+				curpos++;
+				break;
+			case '"':
+				intbuff[ibp++] = '&';
+				intbuff[ibp++] = 'q';
+				intbuff[ibp++] = 'u';
+				intbuff[ibp++] = 'o';
+				intbuff[ibp++] = 't';
+				intbuff[ibp++] = ';';
+				curpos++;
+				break;
+			case '\n':
+				if (h[-1] == '\n' && fillout) {
+					intbuff[ibp++] = '<';
+					intbuff[ibp++] = 'P';
+					intbuff[ibp++] = '>';
+				}
+				if (contained_tab && fillout) {
+					intbuff[ibp++] = '<';
+					intbuff[ibp++] = 'B';
+					intbuff[ibp++] = 'R';
+					intbuff[ibp++] = '>';
+				}
+				contained_tab = 0;
+				curpos = 0;
+				usenbsp = 0;
+				intbuff[ibp++] = '\n';
+				break;
+			case '\t':
+				{
+					int     curtab = 0;
+
+					contained_tab = 1;
+					FLUSHIBP;
+					/* like a typewriter, not like TeX */
+					tabstops[19] = curpos + 1;
+					while (curtab < maxtstop && tabstops[curtab] <= curpos)
+						curtab++;
+					if (curtab < maxtstop) {
+						if (!fillout) {
+							while (curpos < tabstops[curtab]) {
+								intbuff[ibp++] = ' ';
+								if (ibp > 480) {
+									FLUSHIBP;
+								}
+								curpos++;
+							}
+						} else {
+							out_html("<TT>");
+							while (curpos < tabstops[curtab]) {
+								out_html("&nbsp;");
+								curpos++;
+							}
+							out_html("</TT>");
+						}
+					}
+				}
+				break;
+			default:
+				if (*h == ' ' && (h[-1] == '\n' || usenbsp)) {
+					FLUSHIBP;
+					if (!usenbsp && fillout) {
+						out_html("<BR>");
+						curpos = 0;
+					}
+					usenbsp = fillout;
+					if (usenbsp)
+						out_html("&nbsp;");
+					else
+						intbuff[ibp++] = ' ';
+				} else if (*h > 31 && *h < 127)
+					intbuff[ibp++] = *h;
+				else if (((unsigned char) (*h)) > 127) {
+					intbuff[ibp++] = '&';
+					intbuff[ibp++] = '#';
+					intbuff[ibp++] = '0' + ((unsigned char) (*h)) / 100;
+					intbuff[ibp++] = '0' + (((unsigned char) (*h)) % 100) / 10;
+					intbuff[ibp++] = '0' + ((unsigned char) (*h)) % 10;
+					intbuff[ibp++] = ';';
+				}
+				curpos++;
+				break;
+			}
+			if (ibp > (MED_STR_MAX - 20))
+				FLUSHIBP;
+			h++;
+		}
+	}
+	FLUSHIBP;
+	if (buffer)
+		buffer[buffpos] = '\0';
+	if (san && *h)
+		h++;
+	newline_for_fun = exnewline_for_fun;
+	if (result) {
+		*result = buffer;
+		buffer = exbuffer;
+		buffpos = exbuffpos;
+		buffmax = exbuffmax;
+		scaninbuff = exscaninbuff;
+	}
+	return h;
+}
+
+
+static char *
+scan_troff_mandoc(char *c, int san, char **result)
+{
+	char   *ret, *end = c;
+	int     oldval = mandoc_line;
+
+	mandoc_line = 1;
+	while (*end && *end != '\n') {
+		end++;
+	}
+
+	if (end > c + 2
+	    && ispunct(*(end - 1))
+	    && isspace(*(end - 2)) && *(end - 2) != '\n') {
+		/*
+		 * Don't format lonely punctuation E.g. in "xyz ," format the
+		 * xyz and then append the comma removing the space.
+		 */
+		*(end - 2) = '\n';
+		ret = scan_troff(c, san, result);
+		*(end - 2) = *(end - 1);
+		*(end - 1) = ' ';
+	} else {
+		ret = scan_troff(c, san, result);
+	}
+	mandoc_line = oldval;
+	return ret;
+}
+
+int
+main(int argc, char **argv)
+{
+	FILE   *f;
+	char   *t;
+	int     l, i;
+	char   *buf;
+	char   *h, *fullname;
+	STRDEF *stdf;
+
+	t = NULL;
+	while ((i = getopt(argc, argv, "")) != EOF) {
+		switch (i) {
+		default:
+			usage();
+			exit(EXIT_USAGE);
+		}
+	}
+
+	if (argc != 2) {
+		usage();
+		exit(EXIT_USAGE);
+	}
+	manpage = h = t = argv[1];
+	i = 0;
+
+	buf = read_man_page(h);
+	if (!buf) {
+		fprintf(stderr, "man2html: cannot read %s: %s\n", h, strerror(errno));
+		exit(1);
+	}
+#ifdef MAKEINDEX
+	idxfile = fopen(INDEXFILE, "a");
+#endif
+	stdf = &standardchar[0];
+	i = 0;
+	while (stdf->nr) {
+		stdf->next = &standardchar[i];
+		stdf = stdf->next;
+		i++;
+	}
+	chardef = &standardchar[0];
+
+	stdf = &standardstring[0];
+	i = 0;
+	while (stdf->nr) {
+		stdf->next = &standardstring[i];
+		stdf = stdf->next;
+		i++;
+	}
+	strdef = &standardstring[0];
+
+	intdef = &standardint[0];
+	i = 0;
+	while (intdef->nr) {
+		intdef->next = &standardint[i];
+		intdef = intdef->next;
+		i++;
+	}
+	intdef = &standardint[0];
+
+	defdef = NULL;
+
+	scan_troff(buf + 1, 0, NULL);
+
+	while (itemdepth || dl_set[itemdepth]) {
+		out_html("</DL>\n");
+		if (dl_set[itemdepth])
+			dl_set[itemdepth] = 0;
+		else if (itemdepth > 0)
+			itemdepth--;
+	}
+
+	out_html(change_to_font(0));
+	out_html(change_to_size(0));
+	if (!fillout) {
+		fillout = 1;
+		out_html("</PRE>");
+	}
+	out_html(NEWLINE);
+
+	if (output_possible) {
+		outputPageFooter(th_version, th_datestr, th_page_and_sec);
+		/* &nbsp; for mosaic users */
+		fputs("<HR>\n<A NAME=\"index\">&nbsp;</A><H2>Index</H2>\n<DL>\n", stdout);
+		manidx[mip] = 0;
+		fputs(manidx, stdout);
+		if (subs)
+			fputs("</DL>\n", stdout);
+		fputs("</DL>\n", stdout);
+		print_sig();
+		fputs("</BODY>\n</HTML>\n", stdout);
+	} else
+		fprintf(stderr, "man2html: no output produced\n");
+#ifdef MAKEINDEX
+	if (idxfile)
+		fclose(idxfile);
+#endif
+	exit(EXIT_SUCCESS);
+}
diff --git a/support/missing b/support/missing
new file mode 100755
index 0000000..31977a1
--- /dev/null
+++ b/support/missing
@@ -0,0 +1,187 @@
+#! /bin/sh
+# Common stub for a few missing GNU programs while installing.
+# Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+# Franc,ois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+if test $# -eq 0; then
+  echo 1>&2 "Try \`$0 --help' for more information"
+  exit 1
+fi
+
+case "$1" in
+
+  -h|--h|--he|--hel|--help)
+    echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+error status if there is no known handling for PROGRAM.
+
+Options:
+  -h, --help      display this help and exit
+  -v, --version   output version information and exit
+
+Supported PROGRAM values:
+  aclocal      touch file \`aclocal.m4'
+  autoconf     touch file \`configure'
+  autoheader   touch file \`config.h.in'
+  automake     touch all \`Makefile.in' files
+  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
+  flex         create \`lex.yy.c', if possible, from existing .c
+  lex          create \`lex.yy.c', if possible, from existing .c
+  makeinfo     touch the output file
+  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]"
+    ;;
+
+  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+    echo "missing - GNU libit 0.0"
+    ;;
+
+  -*)
+    echo 1>&2 "$0: Unknown \`$1' option"
+    echo 1>&2 "Try \`$0 --help' for more information"
+    exit 1
+    ;;
+
+  aclocal)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified \`acinclude.m4' or \`configure.in'.  You might want
+         to install the \`Automake' and \`Perl' packages.  Grab them from
+         any GNU archive site."
+    touch aclocal.m4
+    ;;
+
+  autoconf)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified \`configure.in'.  You might want to install the
+         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
+         archive site."
+    touch configure
+    ;;
+
+  autoheader)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified \`acconfig.h' or \`configure.in'.  You might want
+         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
+         from any GNU archive site."
+    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER([^):]*:\([^)]*\)).*/\1/p' configure.in`
+    if test -z "$files"; then
+      files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^):]*\)).*/\1/p' configure.in`
+      test -z "$files" || files="$files.in"
+    else
+      files=`echo "$files" | sed -e 's/:/ /g'`
+    fi
+    test -z "$files" && files="config.h.in"
+    touch $files
+    ;;
+
+  automake)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified \`Makefile.am', \`acinclude.m4' or \`configure.in'.
+         You might want to install the \`Automake' and \`Perl' packages.
+         Grab them from any GNU archive site."
+    find . -type f -name Makefile.am -print \
+      | sed 's/^\(.*\).am$/touch \1.in/' \
+      | sh
+    ;;
+
+  bison|yacc)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified a \`.y' file.  You may need the \`Bison' package
+         in order for those modifications to take effect.  You can get
+         \`Bison' from any GNU archive site."
+    rm -f y.tab.c y.tab.h
+    if [ $# -ne 1 ]; then
+        eval LASTARG="\${$#}"
+	case "$LASTARG" in
+	*.y)
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" y.tab.c
+	    fi
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" y.tab.h
+	    fi
+	  ;;
+	esac
+    fi
+    if [ ! -f y.tab.h ]; then
+	echo >y.tab.h
+    fi
+    if [ ! -f y.tab.c ]; then
+	echo 'main() { return 0; }' >y.tab.c
+    fi
+    ;;
+
+  lex|flex)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified a \`.l' file.  You may need the \`Flex' package
+         in order for those modifications to take effect.  You can get
+         \`Flex' from any GNU archive site."
+    rm -f lex.yy.c
+    if [ $# -ne 1 ]; then
+        eval LASTARG="\${$#}"
+	case "$LASTARG" in
+	*.l)
+	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" lex.yy.c
+	    fi
+	  ;;
+	esac
+    fi
+    if [ ! -f lex.yy.c ]; then
+	echo 'main() { return 0; }' >lex.yy.c
+    fi
+    ;;
+
+  makeinfo)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified a \`.texi' or \`.texinfo' file, or any other file
+         indirectly affecting the aspect of the manual.  The spurious
+         call might also be the consequence of using a buggy \`make' (AIX,
+         DU, IRIX).  You might want to install the \`Texinfo' package or
+         the \`GNU make' package.  Grab either from any GNU archive site."
+    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
+    if test -z "$file"; then
+      file=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+      file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $file`
+    fi
+    touch $file
+    ;;
+
+  *)
+    echo 1>&2 "\
+WARNING: \`$1' is needed, and you do not seem to have it handy on your
+         system.  You might have modified some files without having the
+         proper tools for further handling them.  Check the \`README' file,
+         it often tells you about the needed prerequirements for installing
+         this package.  You may also peek at any GNU archive site, in case
+         some other package would contain this missing \`$1' program."
+    exit 1
+    ;;
+esac
+
+exit 0
diff --git a/support/mkclone b/support/mkclone
new file mode 100755
index 0000000..1840b03
--- /dev/null
+++ b/support/mkclone
@@ -0,0 +1,122 @@
+#! /bin/bash
+#
+# mkclone - symlink every file appearing in $src/MANIFEST to a corresponding
+#	    file in the target directory ($1).  Directories specified in
+#	    MANIFEST are created in the target directory
+#
+# Copyright (C) 1996-2002 Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+prog=`basename $0`
+
+SRCDIR=src
+
+USAGE="usage: $prog [-m manifest] [-s srcdir] [-v] [-d] [-h] target"
+while getopts dhm:s:v opt
+do
+	case "$opt" in
+	m)	MANIFEST=$OPTARG ;;
+	s)	SRCDIR=$OPTARG ;;
+	v)	verbose=y ;;
+	d)	ECHO=echo debug=y ;;
+	h)	hardlinks=y ;;
+	?)	echo $USAGE >&2
+		exit 2;;
+	esac
+done
+
+: ${MANIFEST:=${SRCDIR}/MANIFEST}
+
+[ -n "$debug" ] && verbose=
+
+shift $(( $OPTIND - 1 ))
+
+if [ $# -lt 1 ]; then
+	echo $USAGE >&2
+        exit 2
+fi
+
+if [ ! -f $MANIFEST ]; then
+	echo "$prog: $MANIFEST: no such file or directory" >&2
+	echo "$prog: must be run with valid -s argument or from source directory" >&2
+	exit 1
+fi
+
+rm_ltmp=false
+LINKTEMP=`mktemp -t linktmp.XXXXXXXX 2>/dev/null`
+if [ -z "$LINKTEMP" ]; then
+	: ${TMPDIR:=/tmp}
+	LINKTEMP=${TMPDIR}/linktmp.$$
+	rm_ltmp=true
+fi
+
+$rm_ltmp && rm -f ${LINKTEMP}
+# if the user specified hard links, then do that.  otherwise, try to use
+# symlinks if they're present
+if [ -n "$hardlinks" ]; then
+	LN=ln
+elif (ln -s /dev/null ${LINKTEMP}) >/dev/null 2>&1; then
+	LN="ln -s"
+else
+	LN=ln
+fi
+rm -f ${LINKTEMP}
+
+TARGET=$1
+
+if [ ! -d "$TARGET" ]; then
+	mkdir "$TARGET"
+fi
+
+echo "${prog}: creating clone of bash source tree (from $SRCDIR) in $TARGET"
+
+cd "$TARGET" || { echo "${prog}: cannot cd to $TARGET" >&2 ; exit 1; }
+
+while read fname type mode
+do
+	[ -z "$fname" ] && continue
+
+	case "$fname" in
+	\#*)	continue ;;
+	esac
+
+	case "$type" in
+	d)	[ -n "$verbose" ] && echo mkdir $fname
+		$ECHO mkdir $fname ;;		# already in $TARGET
+	f)	fn=${fname##*/}
+		case "$fname" in
+		*/*)	dn=${fname%/*} ;;
+		*)	dn=. ;;
+		esac
+		if [ -n "$verbose" ] || [ -n "$debug" ]; then
+			echo "( cd $dn && $LN $SRCDIR/$fname $fn )"
+		fi
+		[ -z "$debug" ] && ( cd $dn && $LN $SRCDIR/$fname $fn )
+		;;
+	*)	echo "${prog}: ${fname}: unknown file type $type" 1>&2 ;;
+	esac
+done < $MANIFEST
+
+# special
+SPECIAL="parser-built y.tab.c y.tab.h"
+
+rm -f $SPECIAL
+for sf in $SPECIAL
+do
+	[ -n "$verbose" ] && echo cp -p $SRCDIR/$sf $TARGET
+	$ECHO cp -p $SRCDIR/$sf $TARGET
+done
+
+exit 0
diff --git a/support/mkconffiles b/support/mkconffiles
new file mode 100755
index 0000000..59e4c0f
--- /dev/null
+++ b/support/mkconffiles
@@ -0,0 +1,79 @@
+#! /bin/sh
+#
+# mkconffiles - create _distribution and _patchlevel files in preparation
+#		for recreating `configure' from `configure.ac'
+#
+# options:
+#	-s srcdir	directory where `configure' resides (defaults to `.')
+#	-d outdir	directory where the files should be written (defaults
+#			to "$srcdir")
+#	-v		verbose
+#	-n		nocreate - don't create the output files
+#
+# Chet Ramey
+# chet@po.cwru.edu
+
+# Copyright (C) 1996-2002 Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+PROG=`basename $0`
+
+# defaults
+srcdir=.
+
+distname="_distribution"
+patchname="_patchlevel"
+
+while [ $# -gt 0 ]; do
+	case "$1" in
+	-s)	shift; srcdir="$1"; shift;;
+	-d)	shift; outdir="$1"; shift;;
+	-v)	shift; verbose=yes ;;
+	-n)	shift; nocreate=yes;;
+	--)	shift; break;;
+	*)	echo "${PROG}: usage: ${PROG} [-s srcdir] [-d outdir] [-nv]" >&2; exit 2;;
+	esac
+done
+
+if [ ! -f ${srcdir}/configure ]; then
+	echo "${PROG}: ${srcdir}/configure not found" >&2
+	exit 1
+fi
+
+# default output directory to source directory
+if [ -z "$outdir" ]; then
+	outdir=${srcdir}
+fi
+
+DISTRIB=`grep '^BASHVERS' ${srcdir}/configure | sed 's:.*=::'`
+PATCH=`grep '^BASHPATCH' ${srcdir}/configure | sed 's:.*=::'`
+
+if [ -n "$verbose" ]; then
+	echo "${PROG}: creating new distribution files for bash-${DISTRIB}.${PATCH} in ${outdir}"
+fi
+
+distout=${outdir}/${distname}
+patchout=${outdir}/${patchname}
+
+if [ -z "$nocreate" ]; then
+	echo "$DISTRIB" > $distout
+	echo "$PATCH"   > $patchout
+fi
+
+if [ -n "$verbose" ]; then
+	echo "${PROG}: created $distout and $patchout"
+fi
+
+exit 0
diff --git a/support/mkdirs b/support/mkdirs
new file mode 100755
index 0000000..46f656e
--- /dev/null
+++ b/support/mkdirs
@@ -0,0 +1,47 @@
+#! /bin/sh
+#
+# mkdirs - a work-alike for `mkdir -p'
+#
+# Chet Ramey
+# chet@po.cwru.edu
+
+# Copyright (C) 1996-2002 Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+for dir
+do
+
+	test -d "$dir" && continue
+
+	tomake=$dir
+	while test -n "$dir" ; do
+		# dir=${dir%/*}
+		# dir=`expr "$dir" ':' '\(/.*\)/[^/]*'`
+		if dir=`expr "$dir" ':' '\(.*\)/[^/]*'`; then
+			tomake="$dir $tomake"
+		else
+			dir=
+		fi
+	done
+
+	for d in $tomake
+	do
+		test -d "$d" && continue
+		echo mkdir "$d"
+		mkdir "$d"
+	done
+done
+
+exit 0
diff --git a/support/mkinstalldirs b/support/mkinstalldirs
new file mode 100755
index 0000000..d2d5f21
--- /dev/null
+++ b/support/mkinstalldirs
@@ -0,0 +1,111 @@
+#! /bin/sh
+# mkinstalldirs --- make directory hierarchy
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1993-05-16
+# Public domain
+
+errstatus=0
+dirmode=""
+
+usage="\
+Usage: mkinstalldirs [-h] [--help] [-m mode] dir ..."
+
+# process command line arguments
+while test $# -gt 0 ; do
+  case $1 in
+    -h | --help | --h*)         # -h for help
+      echo "$usage" 1>&2
+      exit 0
+      ;;
+    -m)                         # -m PERM arg
+      shift
+      test $# -eq 0 && { echo "$usage" 1>&2; exit 1; }
+      dirmode=$1
+      shift
+      ;;
+    --)                         # stop option processing
+      shift
+      break
+      ;;
+    -*)                         # unknown option
+      echo "$usage" 1>&2
+      exit 1
+      ;;
+    *)                          # first non-opt arg
+      break
+      ;;
+  esac
+done
+
+for file
+do
+  if test -d "$file"; then
+    shift
+  else
+    break
+  fi
+done
+
+case $# in
+  0) exit 0 ;;
+esac
+
+case $dirmode in
+  '')
+    if mkdir -p -- . 2>/dev/null; then
+      echo "mkdir -p -- $*"
+      exec mkdir -p -- "$@"
+    fi
+    ;;
+  *)
+    if mkdir -m "$dirmode" -p -- . 2>/dev/null; then
+      echo "mkdir -m $dirmode -p -- $*"
+      exec mkdir -m "$dirmode" -p -- "$@"
+    fi
+    ;;
+esac
+
+for file
+do
+  set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
+  shift
+
+  pathcomp=
+  for d
+  do
+    pathcomp="$pathcomp$d"
+    case $pathcomp in
+      -*) pathcomp=./$pathcomp ;;
+    esac
+
+    if test ! -d "$pathcomp"; then
+      echo "mkdir $pathcomp"
+
+      mkdir "$pathcomp" || lasterr=$?
+
+      if test ! -d "$pathcomp"; then
+  	errstatus=$lasterr
+      else
+  	if test ! -z "$dirmode"; then
+	  echo "chmod $dirmode $pathcomp"
+    	  lasterr=""
+  	  chmod "$dirmode" "$pathcomp" || lasterr=$?
+
+  	  if test ! -z "$lasterr"; then
+  	    errstatus=$lasterr
+  	  fi
+  	fi
+      fi
+    fi
+
+    pathcomp="$pathcomp/"
+  done
+done
+
+exit $errstatus
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# End:
+# mkinstalldirs ends here
diff --git a/support/mksignames.c b/support/mksignames.c
new file mode 100644
index 0000000..ba87ae8
--- /dev/null
+++ b/support/mksignames.c
@@ -0,0 +1,111 @@
+/* mksignames.c -- Create and write `signames.h', which contains an array of
+   signal names. */
+
+/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <signal.h>
+
+#include <stdio.h>
+#if defined (HAVE_STDLIB_H)
+#  include <stdlib.h>
+#else
+#  include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+/* Duplicated from signames.c */
+#if !defined (NSIG)
+#  define NSIG 64
+#endif
+
+#define LASTSIG NSIG+2
+
+/* Imported from signames.c */
+extern void initialize_signames ();
+extern char *signal_names[];
+
+char *progname;
+
+void
+write_signames (stream)
+     FILE *stream;
+{
+  register int i;
+
+  fprintf (stream, "/* This file was automatically created by %s.\n",
+	   progname);
+  fprintf (stream, "   Do not edit.  Edit support/mksignames.c instead. */\n\n");
+  fprintf (stream,
+	   "/* A translation list so we can be polite to our users. */\n");
+#if defined (CROSS_COMPILING)
+  fprintf (stream, "extern char *signal_names[];\n\n");
+  fprintf (stream, "extern void initialize_signames PARAMS((void));\n\n");
+#else
+  fprintf (stream, "char *signal_names[NSIG + 4] = {\n");
+
+  for (i = 0; i <= LASTSIG; i++)
+    fprintf (stream, "    \"%s\",\n", signal_names[i]);
+
+  fprintf (stream, "    (char *)0x0\n");
+  fprintf (stream, "};\n\n");
+  fprintf (stream, "#define initialize_signames()\n\n");
+#endif
+}
+
+int
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  char *stream_name;
+  FILE *stream;
+
+  progname = argv[0];
+
+  if (argc == 1)
+    {
+      stream_name = "stdout";
+      stream = stdout;
+    }
+  else if (argc == 2)
+    {
+      stream_name = argv[1];
+      stream = fopen (stream_name, "w");
+    }
+  else
+    {
+      fprintf (stderr, "Usage: %s [output-file]\n", progname);
+      exit (1);
+    }
+
+  if (!stream)
+    {
+      fprintf (stderr, "%s: %s: cannot open for writing\n",
+	       progname, stream_name);
+      exit (2);
+    }
+
+#if !defined (CROSS_COMPILING)
+  initialize_signames ();
+#endif
+  write_signames (stream);
+  exit (0);
+}
diff --git a/support/mkversion.sh b/support/mkversion.sh
new file mode 100755
index 0000000..5960a42
--- /dev/null
+++ b/support/mkversion.sh
@@ -0,0 +1,168 @@
+#! /bin/sh
+
+# Simple program to make new version numbers for the shell.
+# Big deal, but it was getting out of hand to do everything
+# in the makefile.  This creates a file named by the -o option,
+# otherwise everything is echoed to the standard output.
+
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+PROGNAME=`basename $0`
+USAGE="$PROGNAME [-b] [-S srcdir] -d version -p patchlevel [-s status] [-o outfile]"
+
+source_dir="."
+
+while [ $# -gt 0 ]; do
+	case "$1" in
+	-o)	shift; OUTFILE=$1; shift ;;
+	-b)	shift; inc_build=yes ;;
+	-s)	shift; rel_status=$1; shift ;;
+	-p)	shift; patch_level=$1; shift ;;
+	-d)	shift; dist_version=$1; shift ;;
+	-S)	shift; source_dir="$1"; shift ;;
+	*)	echo "$PROGNAME: usage: $USAGE" >&2 ; exit 2 ;;
+	esac
+done
+
+# Required arguments
+if [ -z "$dist_version" ]; then
+	echo "${PROGNAME}: required argument -d missing" >&2
+	echo "$PROGNAME: usage: $USAGE" >&2
+	exit 1
+fi
+
+#if [ -z "$patch_level" ]; then
+#	echo "${PROGNAME}: required argument -p missing" >&2
+#	echo "$PROGNAME: usage: $USAGE" >&2
+#	exit 1
+#fi
+
+# Defaults
+if [ -z "$rel_status" ]; then
+	rel_status="release"
+fi
+
+build_ver=
+if [ -r .build ]; then
+	build_ver=`cat .build`
+fi
+if [ -z "$build_ver" ]; then
+	build_ver=0
+fi
+
+# increment the build version if that's what's required
+
+if [ -n "$inc_build" ]; then
+	build_ver=`expr 1 + $build_ver`
+fi
+
+# what's the patch level?
+if [ -z "$patch_level" ]; then
+	patchlevel_h=$source_dir/patchlevel.h
+	if [ -s $patchlevel_h ]; then
+		patch_level=`cat $patchlevel_h | grep '^#define[ 	]*PATCHLEVEL' | awk '{print $NF}'`
+	fi
+fi
+if [ -z "$patch_level" ]; then
+	patch_level=0
+fi
+
+# If we have an output file specified, make it the standard output
+if [ -n "$OUTFILE" ]; then
+	if exec >$OUTFILE; then
+		:
+	else
+		echo "${PROGNAME}: cannot redirect standard output to $OUTFILE" >&2
+		exit 1
+	fi
+fi
+
+# Output the leading comment.
+echo "/* Version control for the shell.  This file gets changed when you say"
+echo "   \`make version.h' to the Makefile.  It is created by mkversion. */"
+
+# Output the distribution version.  Single numbers are converted to x.00.
+# Allow, as a special case, `[:digit:].[:digit:][:alpha:]' for
+# intermediate versions (e.g., `2.5a').
+# Any characters other than digits and `.' are invalid.
+case "$dist_version" in
+[0-9].[0-9][a-z])	;;	# special case
+*[!0-9.]*)	echo "mkversion.sh: ${dist_version}: bad distribution version" >&2
+		exit 1 ;;
+*.*)	;;
+*)	dist_version=${dist_version}.00 ;;
+esac
+
+dist_major=`echo $dist_version | sed 's:\..*$::'`
+[ -z "${dist_major}" ] && dist_major=0
+
+dist_minor=`echo $dist_version | sed 's:^.*\.::'`
+case "$dist_minor" in
+"")	dist_minor=0 ;;
+[a-z])	dist_minor=0${dist_minor} ;;
+?)	dist_minor=${dist_minor} ;;
+*)	;;
+esac
+
+#float_dist=`echo $dist_version | awk '{printf "%.2f\n", $1}'`
+float_dist=${dist_major}.${dist_minor}
+
+echo
+echo "/* The distribution version number of this shell. */"
+echo "#define DISTVERSION \"${float_dist}\""
+
+# Output the patch level
+#echo
+#echo "/* The patch level of this version of the shell. */"
+#echo "#define PATCHLEVEL ${patch_level}"
+
+# Output the build version
+echo
+echo "/* The last built version of this shell. */"
+echo "#define BUILDVERSION ${build_ver}"
+
+# Output the release status
+echo
+echo "/* The release status of this shell. */"
+echo "#define RELSTATUS \"${rel_status}\""
+
+echo
+echo "/* The default shell compatibility-level (the current version) */"
+echo "#define DEFAULT_COMPAT_LEVEL ${dist_major}${dist_minor}"
+
+# Output the SCCS version string
+sccs_string="${float_dist}.${patch_level}(${build_ver}) ${rel_status} GNU"
+echo
+echo "/* A version string for use by sccs and the what command. */"
+echo "#define SCCSVERSION \"@(#)Bash version ${sccs_string}\""
+
+# extern function declarations
+#echo
+#echo '/* Functions from version.c. */'
+#echo 'extern char *shell_version_string PARAMS((void));'
+#echo 'extern void show_shell_version PARAMS((int));'
+
+if [ -n "$inc_build" ]; then
+	# Make sure we can write to .build
+	if [ -f .build ] && [ ! -w .build ]; then
+		echo "$PROGNAME: cannot write to .build, not incrementing build version" >&2
+	else
+		echo "$build_ver" > .build
+	fi
+fi
+	
+exit 0
diff --git a/support/printenv.c b/support/printenv.c
new file mode 100644
index 0000000..154e086
--- /dev/null
+++ b/support/printenv.c
@@ -0,0 +1,72 @@
+/* printenv -- minimal clone of BSD printenv(1).
+
+   usage: printenv [varname]
+
+   Chet Ramey
+   chet@po.cwru.edu
+*/
+
+/* Copyright (C) 1997-2002 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#if defined (HAVE_CONFIG_H)
+#  include  <config.h>
+#endif
+
+#include "bashansi.h"
+#include <stdio.h>		/* puts */
+
+extern char **environ;
+
+int
+main (argc, argv) 
+     int argc;
+     char **argv;
+{
+  register char **envp, *eval;
+  int len;
+
+  argv++;
+  argc--;
+
+  /* printenv */
+  if (argc == 0)
+    {
+      for (envp = environ; *envp; envp++)
+	puts (*envp);
+      exit (0);
+    }
+
+  /* printenv varname */
+  len = strlen (*argv);
+  for (envp = environ; *envp; envp++)
+    {
+      if (**argv == **envp && strncmp (*envp, *argv, len) == 0)
+	{
+	  eval = *envp + len;
+	  /* If the environment variable doesn't have an `=', ignore it. */
+	  if (*eval == '=')
+	    {
+	      puts (eval + 1);
+	      exit (0);
+	    }
+	}
+    }
+  exit (1);
+}
+  
diff --git a/support/printenv.sh b/support/printenv.sh
new file mode 100755
index 0000000..32b7ee8
--- /dev/null
+++ b/support/printenv.sh
@@ -0,0 +1,27 @@
+#! /bin/sh -
+
+# Copyright (C) 1996-2002 Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+if [ $# -eq 0 ]; then
+	env
+	exit
+elif eval [ "\${$1-unset}" = "unset" ]; then
+	exit 1
+else
+	eval echo \$$1
+	exit 0
+fi
diff --git a/support/recho.c b/support/recho.c
new file mode 100644
index 0000000..7e3c6bc
--- /dev/null
+++ b/support/recho.c
@@ -0,0 +1,67 @@
+/*
+   recho -- really echo args, bracketed with <> and with invisible chars
+	    made visible.
+
+   Chet Ramey
+   chet@po.cwru.edu
+*/
+
+/* Copyright (C) 2002-2005 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#if defined (HAVE_CONFIG_H)
+#  include  <config.h>
+#endif
+
+#include "bashansi.h"
+#include <stdio.h>
+
+void strprint();
+
+int
+main(argc, argv)
+int	argc;
+char	**argv;
+{
+	register int	i;
+
+	for (i = 1; i < argc; i++) {
+		printf("argv[%d] = <", i);
+		strprint(argv[i]);
+		printf(">\n");
+	}
+	exit(0);
+}
+
+void
+strprint(str)
+char	*str;
+{
+	register unsigned char *s;
+
+	for (s = (unsigned char *)str; s && *s; s++) {
+		if (*s < ' ') {
+			putchar('^');
+			putchar(*s+64);
+		} else if (*s == 127) {
+			putchar('^');
+			putchar('?');
+		} else
+			putchar(*s);
+	}
+}
diff --git a/support/rlvers.sh b/support/rlvers.sh
new file mode 100755
index 0000000..64cadc7
--- /dev/null
+++ b/support/rlvers.sh
@@ -0,0 +1,113 @@
+#! /bin/sh
+#
+# rlvers.sh -- run a program that prints out the readline version number
+#	       using locally-installed readline libraries
+#
+
+# Copyright (C) 1996-2002 Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+PROGNAME=`basename $0`
+
+: ${TMPDIR:=/tmp}
+TDIR=$TMPDIR/rlvers
+
+# defaults
+CC=cc
+RL_LIBDIR=/usr/local/lib
+RL_INCDIR=/usr/local/include
+
+TERMCAP_LIB="-ltermcap"
+
+# cannot rely on the presence of getopts
+while [ $# -gt 0 ]; do
+	case "$1" in
+	-C)	shift ; CC="$1"; shift ;;
+	-I)	shift ; RL_INCDIR="$1" ; shift ;;
+	-L)	shift ; RL_LIBDIR="$1" ; shift ;;
+	-T)	shift ; TERMCAP_LIB="$1" ; shift ;;
+	-v)	shift ; verbose=y ;;
+	--)	shift ; break ;;
+	*)	echo "${PROGNAME}: usage: $PROGNAME [-C compiler] [-L libdir] [-v]" >&2 ; exit 2;;
+	esac
+done
+
+# if someone happened to install examples/rlversion, use it (it's not
+# installed by default)
+if test -f ${RL_LIBDIR}/rlversion ; then
+	if [ -n "$verbose" ]; then
+		echo "${PROGNAME}: using installed rlversion from ${RL_LIBDIR}/rlversion"
+	fi
+	v=`${RL_LIBDIR}/rlversion 2>/dev/null`
+	case "$v" in
+	unknown | "")	echo 0 ;;
+	*)		echo "$v" ;;
+	esac
+	exit 0
+fi
+
+if [ -n "$verbose" ]; then
+	echo "${PROGNAME}: using ${RL_LIBDIR} to find libreadline"
+	echo "${PROGNAME}: attempting program compilation"
+fi
+
+# make $TDIR mode 0700
+mkdir $TDIR || {
+	echo "${PROGNAME}: ${TDIR}: file exists" >&2
+	echo 0
+	exit 1
+}
+chmod 700 $TDIR
+
+trap 'rm -f $TDIR/rlvers $TDIR/rlvers.? ; rmdir $TDIR' 0 1 2 3 6 15
+
+cat > $TDIR/rlvers.c << EOF
+#include <stdio.h>
+extern char *rl_library_version;
+
+main()
+{
+	printf("%s\n", rl_library_version ? rl_library_version : "0");
+	exit(0);
+}
+EOF
+
+opwd=`pwd`
+
+cd $TDIR || {
+	echo "${PROGNAME}: cannot cd to $TDIR" >&2
+	echo 0
+	exit 1
+}
+	
+if eval ${CC} -L${RL_LIBDIR} -I${RL_INCDIR} -o $TDIR/rlvers $TDIR/rlvers.c -lreadline ${TERMCAP_LIB};
+then
+	v=`$TDIR/rlvers`
+else
+	if [ -n "$verbose" ] ; then
+		echo "${PROGNAME}: compilation failed: status $?"
+		echo "${PROGNAME}: using version 0"
+	fi
+	v=0
+fi
+
+case "$v" in
+unknown | "")	echo 0 ;;
+*)		echo "$v" ;;
+esac
+
+cd $opwd
+exit 0
diff --git a/support/shobj-conf b/support/shobj-conf
new file mode 100755
index 0000000..cd7634d
--- /dev/null
+++ b/support/shobj-conf
@@ -0,0 +1,553 @@
+#! /bin/sh
+#
+# shobj-conf -- output a series of variable assignments to be substituted
+#		into a Makefile by configure which specify system-dependent
+#		information for creating shared objects that may be loaded
+#		into bash with `enable -f'
+#
+# usage: shobj-conf [-C compiler] -c host_cpu -o host_os -v host_vendor
+#
+# Chet Ramey
+# chet@po.cwru.edu
+
+#   Copyright (C) 1996-2021 Free Software Foundation, Inc.
+#
+#   This file is part of GNU Bash, the Bourne Again SHell.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+#
+# defaults
+#
+SHOBJ_STATUS=supported
+SHLIB_STATUS=supported
+
+SHOBJ_CC=cc
+SHOBJ_CFLAGS=
+SHOBJ_LD=
+SHOBJ_LDFLAGS=
+SHOBJ_XLDFLAGS=
+SHOBJ_LIBS=
+
+SHLIB_XLDFLAGS=
+SHLIB_LIBS=
+
+SHLIB_DOT='.'
+SHLIB_LIBPREF='lib'
+SHLIB_LIBSUFF='so'
+
+SHLIB_LIBVERSION='$(SHLIB_LIBSUFF)'
+SHLIB_DLLVERSION='$(SHLIB_MAJOR)'
+
+PROGNAME=`basename $0`
+USAGE="$PROGNAME [-C compiler] -c host_cpu -o host_os -v host_vendor"
+
+while [ $# -gt 0 ]; do
+	case "$1" in
+	-C)	shift; SHOBJ_CC="$1"; shift ;;
+	-c)	shift; host_cpu="$1"; shift ;;
+	-o)	shift; host_os="$1"; shift ;;
+	-v)	shift; host_vendor="$1"; shift ;;
+	*)	echo "$USAGE" >&2 ; exit 2;;
+	esac
+done
+
+case "${host_os}-${SHOBJ_CC}-${host_vendor}" in
+nsk-cc-tandem|nsk-c99-tandem)
+	SHOBJ_CFLAGS=-Wglobalized
+	case `uname -m` in
+	NSR*)
+		SHOBJ_CFLAGS="${SHOBJ_CFLAGS} -Wcall_shared" # default on TNS/E, needed on TNS/R
+		SHOBJ_LD=/usr/bin/ld # for TNS/R
+		;;
+	NSE*|NEO*)
+		SHOBJ_LD=/usr/bin/eld
+		;;
+	esac
+	SHOBJ_LDFLAGS='-shared -bglobalized -unres_symbols ignore'
+	;;
+
+sunos4*-*gcc*)
+	SHOBJ_CFLAGS=-fpic
+	SHOBJ_LD=/usr/bin/ld
+	SHOBJ_LDFLAGS='-assert pure-text'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
+	;;
+
+sunos4*)
+	SHOBJ_CFLAGS=-pic
+	SHOBJ_LD=/usr/bin/ld
+	SHOBJ_LDFLAGS='-assert pure-text'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
+	;;
+
+sunos5*-*gcc*|solaris2*-*gcc*)
+	SHOBJ_LD='${CC}'
+	ld_used=`gcc -print-prog-name=ld`
+	if ${ld_used} -V 2>&1 | grep GNU >/dev/null 2>&1; then
+		# This line works for the GNU ld
+		SHOBJ_LDFLAGS='-shared -Wl,-h,$@'
+		# http://sourceware.org/ml/binutils/2001-08/msg00361.html
+		SHOBJ_CFLAGS=-fPIC
+	else
+		# This line works for the Solaris linker in /usr/ccs/bin/ld
+		SHOBJ_LDFLAGS='-shared -Wl,-i -Wl,-h,$@'
+		SHOBJ_CFLAGS=-fpic
+	fi
+
+#	SHLIB_XLDFLAGS='-R $(libdir)'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+sunos5*|solaris2*)
+	SHOBJ_CFLAGS='-K pic'
+	SHOBJ_LD=/usr/ccs/bin/ld
+	SHOBJ_LDFLAGS='-G -dy -z text -i -h $@'
+
+#	SHLIB_XLDFLAGS='-R $(libdir)'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+# All versions of Linux (including Gentoo/FreeBSD) or the semi-mythical GNU Hurd.
+linux*-*|gnu*-*|k*bsd*-gnu-*|midnightbsd*|freebsd*|dragonfly*)
+	SHOBJ_CFLAGS=-fPIC
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared -Wl,-soname,$@'
+
+	SHLIB_XLDFLAGS='-Wl,-rpath,$(libdir) -Wl,-soname,`basename $@ $(SHLIB_MINOR)`'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
+	;;
+
+# Darwin/MacOS X
+darwin*)
+	# Common definitions for all darwin/mac os x versions
+	SHOBJ_CFLAGS='-fno-common'
+
+	SHOBJ_LD='${CC}'
+
+	SHLIB_LIBVERSION='$(SHLIB_MAJOR)$(SHLIB_MINOR).$(SHLIB_LIBSUFF)'
+	SHLIB_LIBSUFF='dylib'
+
+	# unused at this time
+	SHLIB_SONAME='$(libdir)/`echo $@ | sed "s:\\..*::"`.$(SHLIB_MAJOR).$(SHLIB_LIBSUFF)'
+
+	case "${host_os}" in
+	# Darwin versions 1, 5, 6, 7 correspond to Mac OS X 10.0, 10.1, 10.2,
+	# and 10.3, respectively.
+	darwin[1-7].*)
+		SHOBJ_STATUS=unsupported
+		SHOBJ_LDFLAGS='-dynamic'
+		SHLIB_XLDFLAGS='-install_name $(libdir)/`echo $@ | sed "s:\\..*::"`.$(SHLIB_MAJOR).$(SHLIB_LIBSUFF) -current_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -compatibility_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -v'
+		;;
+	# Darwin 8 == Mac OS X 10.4; Mac OS X 10.N == Darwin N+4
+	*)
+		case "${host_os}" in
+		darwin[89]*|darwin1[012]*)
+			SHOBJ_ARCHFLAGS=
+			;;
+		 *) 	# Mac OS X 10.9 (Mavericks) and later
+			SHOBJ_ARCHFLAGS=
+			# for 32 and 64bit universal library
+			#SHOBJ_ARCHFLAGS='-arch i386 -arch x86_64'
+			#SHOBJ_CFLAGS=${SHOBJ_CFLAGS}' -arch i386 -arch x86_64'
+			;;
+		 esac
+		 SHOBJ_LDFLAGS="-dynamiclib -dynamic -undefined dynamic_lookup ${SHOBJ_ARCHFLAGS}"
+		 SHLIB_XLDFLAGS="-dynamiclib ${SHOBJ_ARCHFLAGS}"' -install_name $(libdir)/`echo $@ | sed "s:\\..*::"`.$(SHLIB_MAJOR).$(SHLIB_LIBSUFF) -current_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -compatibility_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -v'
+		;;
+	esac
+
+	SHLIB_LIBS='-lncurses'	# see if -lcurses works on MacOS X 10.1 
+	;;
+
+openbsd*|netbsd*|mirbsd*)
+	SHOBJ_CFLAGS=-fPIC
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared'
+
+	SHLIB_XLDFLAGS='-R$(libdir)'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
+	;;
+
+bsdi2*)
+	SHOBJ_CC=shlicc2
+	SHOBJ_CFLAGS=
+	SHOBJ_LD=ld
+	SHOBJ_LDFLAGS=-r
+	SHOBJ_LIBS=-lc_s.2.1.0
+
+	# BSD/OS 2.x and 3.x `shared libraries' are too much of a pain in
+	# the ass -- they require changing {/usr/lib,etc}/shlib.map on
+	# each system, and the library creation process is byzantine
+	SHLIB_STATUS=unsupported
+	;;
+
+bsdi3*)
+	SHOBJ_CC=shlicc2
+	SHOBJ_CFLAGS=
+	SHOBJ_LD=ld
+	SHOBJ_LDFLAGS=-r
+	SHOBJ_LIBS=-lc_s.3.0.0
+
+	# BSD/OS 2.x and 3.x `shared libraries' are too much of a pain in
+	# the ass -- they require changing {/usr/lib,etc}/shlib.map on
+	# each system, and the library creation process is byzantine
+	SHLIB_STATUS=unsupported
+	;;
+
+bsdi4*)
+	# BSD/OS 4.x now supports ELF and SunOS-style dynamically-linked
+	# shared libraries.  gcc 2.x is the standard compiler, and the
+	# `normal' gcc options should work as they do in Linux.
+
+	SHOBJ_CFLAGS=-fPIC
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared -Wl,-soname,$@'
+
+	SHLIB_XLDFLAGS='-Wl,-soname,`basename $@ $(SHLIB_MINOR)`'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
+	;;
+
+osf*-*gcc*)
+	# Fix to use gcc linker driver from bfischer@TechFak.Uni-Bielefeld.DE
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared -Wl,-soname,$@'
+
+	SHLIB_XLDFLAGS='-rpath $(libdir)'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+osf*)
+	SHOBJ_LD=ld
+	SHOBJ_LDFLAGS='-shared -soname $@ -expect_unresolved "*"'
+
+	SHLIB_XLDFLAGS='-rpath $(libdir)'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+aix4.[2-9]*-*gcc*|aix[5-9].*-*gcc*)		# lightly tested by jik@cisco.com
+	SHOBJ_CFLAGS=-fpic
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-Wl,-bdynamic -Wl,-bnoentry -Wl,-bexpall'
+	SHOBJ_XLDFLAGS='-G'
+
+	SHLIB_XLDFLAGS='-bM:SRE'
+	SHLIB_LIBS='-lcurses -lc'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+aix4.[2-9]*|aix[5-9].*)
+	SHOBJ_CFLAGS=-K
+	SHOBJ_LD='ld'
+	SHOBJ_LDFLAGS='-bdynamic -bnoentry -bexpall'
+	SHOBJ_XLDFLAGS='-G'
+
+	SHLIB_XLDFLAGS='-bM:SRE'
+	SHLIB_LIBS='-lcurses -lc'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+#
+# THE FOLLOWING ARE UNTESTED -- and some may not support the dlopen interface
+#
+irix[56]*-*gcc*)
+	SHOBJ_CFLAGS='-fpic'
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared -Wl,-soname,$@'
+
+	SHLIB_XLDFLAGS='-Wl,-rpath,$(libdir)'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+irix[56]*)
+	SHOBJ_CFLAGS='-K PIC'
+	SHOBJ_LD=ld
+#	SHOBJ_LDFLAGS='-call_shared -hidden_symbol -no_unresolved -soname $@'
+#	Change from David Kaelbling <drk@sgi.com>.  If you have problems,
+#	remove the `-no_unresolved'
+	SHOBJ_LDFLAGS='-shared -no_unresolved -soname $@'
+
+	SHLIB_XLDFLAGS='-rpath $(libdir)'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+hpux9*-*gcc*)
+	# must use gcc; the bundled cc cannot compile PIC code
+	SHOBJ_CFLAGS='-fpic'
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared -Wl,-b -Wl,+s'
+
+	SHLIB_XLDFLAGS='-Wl,+b,$(libdir)'
+	SHLIB_LIBSUFF='sl'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+hpux9*)
+	SHOBJ_STATUS=unsupported
+	SHLIB_STATUS=unsupported
+
+	# If you are using the HP ANSI C compiler, you can uncomment and use
+	# this code (I have not tested it)
+#	SHOBJ_STATUS=supported
+#	SHLIB_STATUS=supported
+#
+#	SHOBJ_CFLAGS='+z'
+#	SHOBJ_LD='ld'
+#	SHOBJ_LDFLAGS='-b +s'
+#
+#	SHLIB_XLDFLAGS='+b $(libdir)'
+#	SHLIB_LIBSUFF='sl'
+#	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'	
+
+	;;
+
+hpux10*-*gcc*)
+	# must use gcc; the bundled cc cannot compile PIC code
+	SHOBJ_CFLAGS='-fpic'
+	SHOBJ_LD='${CC}'
+	# if you have problems linking here, moving the `-Wl,+h,$@' from
+	# SHLIB_XLDFLAGS to SHOBJ_LDFLAGS has been reported to work
+	SHOBJ_LDFLAGS='-shared -fpic -Wl,-b -Wl,+s'
+
+	SHLIB_XLDFLAGS='-Wl,+h,$@ -Wl,+b,$(libdir)'
+	SHLIB_LIBSUFF='sl'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+hpux10*)
+	SHOBJ_STATUS=unsupported
+	SHLIB_STATUS=unsupported
+
+	# If you are using the HP ANSI C compiler, you can uncomment and use
+	# this code (I have not tested it)
+#	SHOBJ_STATUS=supported
+#	SHLIB_STATUS=supported
+#
+#	SHOBJ_CFLAGS='+z'
+#	SHOBJ_LD='ld'
+#	SHOBJ_LDFLAGS='-b +s +h $@'
+#
+#	SHLIB_XLDFLAGS='+b $(libdir)'
+#	SHLIB_LIBSUFF='sl'
+#	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'	
+
+	;;
+
+hpux11*-*gcc*)
+	# must use gcc; the bundled cc cannot compile PIC code
+	SHOBJ_CFLAGS='-fpic'
+	SHOBJ_LD='${CC}'
+#	SHOBJ_LDFLAGS='-shared -Wl,-b -Wl,-B,symbolic -Wl,+s -Wl,+std -Wl,+h,$@'
+	SHOBJ_LDFLAGS='-shared -fpic -Wl,-b -Wl,+s -Wl,+h,$@'
+
+	SHLIB_XLDFLAGS='-Wl,+b,$(libdir)'
+	SHLIB_LIBSUFF='sl'
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+hpux11*)
+	SHOBJ_STATUS=unsupported
+	SHLIB_STATUS=unsupported
+
+	# If you are using the HP ANSI C compiler, you can uncomment and use
+	# this code from michael.osipov@siemens.com (I have not tested it)
+#	SHOBJ_CFLAGS='+z'
+#	SHOBJ_LD='$(CC)'
+#	SHOBJ_LDFLAGS='-b -Wl,+s -Wl,+h,$@'
+#
+#	SHLIB_XLDFLAGS='-Wl,+b,$(libdir)'
+#	SHLIB_LIBSUFF='so'
+#	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'	
+#	SHLIB_LIBS='$(TERMCAP_LIB)'
+	;;
+
+sysv4*-*gcc*)
+	SHOBJ_CFLAGS=-shared
+	SHOBJ_LDFLAGS='-shared -h $@'
+	SHOBJ_LD='${CC}'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+sysv4*)
+	SHOBJ_CFLAGS='-K PIC'
+	SHOBJ_LD=ld
+	SHOBJ_LDFLAGS='-dy -z text -G -h $@'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+sco3.2v5*-*gcc*)
+	SHOBJ_CFLAGS='-fpic'		# DEFAULTS TO ELF
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+sco3.2v5*)
+	SHOBJ_CFLAGS='-K pic -b elf'
+	SHOBJ_LD=ld
+	SHOBJ_LDFLAGS='-G -b elf -dy -z text -h $@'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+sysv5uw7*-*gcc*)
+	SHOBJ_CFLAGS='-fpic'
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+sysv5uw7*)
+	SHOBJ_CFLAGS='-K PIC'
+	SHOBJ_LD=ld
+	SHOBJ_LDFLAGS='-G -dy -z text -h $@'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+sysv5UnixWare*-*gcc*)
+	SHOBJ_CFLAGS=-fpic
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+sysv5UnixWare*)
+	SHOBJ_CFLAGS='-K PIC'
+	SHOBJ_LD=ld
+	SHOBJ_LDFLAGS='-G -dy -z text -h $@'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+sysv5OpenUNIX*-*gcc*)
+	SHOBJ_CFLAGS=-fpic
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+sysv5OpenUNIX*)
+	SHOBJ_CFLAGS='-K PIC'
+	SHOBJ_LD=ld
+	SHOBJ_LDFLAGS='-G -dy -z text -h $@'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+dgux*-*gcc*)
+	SHOBJ_CFLAGS=-fpic
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+dgux*)
+	SHOBJ_CFLAGS='-K pic'
+	SHOBJ_LD=ld
+	SHOBJ_LDFLAGS='-G -dy -h $@'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+msdos*)
+	SHOBJ_STATUS=unsupported
+	SHLIB_STATUS=unsupported
+	;;
+
+cygwin*)
+	SHOBJ_LD='$(CC)'
+	SHOBJ_LDFLAGS='-shared -Wl,--enable-auto-import -Wl,--enable-auto-image-base -Wl,--export-all -Wl,--out-implib=$(@).a'
+	SHLIB_LIBPREF='cyg'
+	SHLIB_LIBSUFF='dll'
+	SHLIB_LIBVERSION='$(SHLIB_DLLVERSION).$(SHLIB_LIBSUFF)'
+	SHLIB_LIBS='$(TERMCAP_LIB)'
+
+	SHLIB_DOT=
+	# For official cygwin releases, DLLVERSION will be defined in the
+	# environment of configure, and will be incremented any time the API
+	# changes in a non-backwards compatible manner.  Otherwise, it is just
+	# SHLIB_MAJOR.
+	if [ -n "$DLLVERSION" ] ; then
+		SHLIB_DLLVERSION="$DLLVERSION"
+	fi
+	;;
+
+mingw*)
+	SHOBJ_LD='$(CC)'
+	SHOBJ_LDFLAGS='-shared -Wl,--enable-auto-import -Wl,--enable-auto-image-base -Wl,--export-all -Wl,--out-implib=$(@).a'
+	SHLIB_LIBSUFF='dll'
+	SHLIB_LIBVERSION='$(SHLIB_DLLVERSION).$(SHLIB_LIBSUFF)'
+	SHLIB_LIBS='$(TERMCAP_LIB)'
+
+	SHLIB_DOT=
+	# For official cygwin releases, DLLVERSION will be defined in the
+	# environment of configure, and will be incremented any time the API
+	# changes in a non-backwards compatible manner.  Otherwise, it is just
+	# SHLIB_MAJOR.
+	if [ -n "$DLLVERSION" ] ; then
+		SHLIB_DLLVERSION="$DLLVERSION"
+	fi
+	;;
+
+#
+# Rely on correct gcc configuration for everything else
+#
+*-*gcc*)
+	SHOBJ_CFLAGS=-fpic
+	SHOBJ_LD='${CC}'
+	SHOBJ_LDFLAGS='-shared'
+
+	SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
+	;;
+
+*)
+	SHOBJ_STATUS=unsupported
+	SHLIB_STATUS=unsupported
+	;;
+
+esac
+
+echo SHOBJ_CC=\'"$SHOBJ_CC"\'
+echo SHOBJ_CFLAGS=\'"$SHOBJ_CFLAGS"\'
+echo SHOBJ_LD=\'"$SHOBJ_LD"\'
+echo SHOBJ_LDFLAGS=\'"$SHOBJ_LDFLAGS"\'
+echo SHOBJ_XLDFLAGS=\'"$SHOBJ_XLDFLAGS"\'
+echo SHOBJ_LIBS=\'"$SHOBJ_LIBS"\'
+
+echo SHLIB_XLDFLAGS=\'"$SHLIB_XLDFLAGS"\'
+echo SHLIB_LIBS=\'"$SHLIB_LIBS"\'
+
+echo SHLIB_DOT=\'"$SHLIB_DOT"\'
+
+echo SHLIB_LIBPREF=\'"$SHLIB_LIBPREF"\'
+echo SHLIB_LIBSUFF=\'"$SHLIB_LIBSUFF"\'
+
+echo SHLIB_LIBVERSION=\'"$SHLIB_LIBVERSION"\'
+echo SHLIB_DLLVERSION=\'"$SHLIB_DLLVERSION"\'
+
+echo SHOBJ_STATUS=\'"$SHOBJ_STATUS"\'
+echo SHLIB_STATUS=\'"$SHLIB_STATUS"\'
+
+exit 0
diff --git a/support/signames.c b/support/signames.c
new file mode 100644
index 0000000..84864fd
--- /dev/null
+++ b/support/signames.c
@@ -0,0 +1,446 @@
+/* signames.c -- Create an array of signal names. */
+
+/* Copyright (C) 2006-2021 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <sys/types.h>
+#include <signal.h>
+
+#if defined (HAVE_STDLIB_H)
+#  include <stdlib.h>
+#else
+#  include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if !defined (NSIG)
+#  define NSIG 64
+#endif
+
+/*
+ * Special traps:
+ *	EXIT == 0
+ *	DEBUG == NSIG
+ *	ERR == NSIG+1
+ *	RETURN == NSIG+2
+ */
+#define LASTSIG NSIG+2
+
+char *signal_names[2 * (LASTSIG)];
+
+#define signal_names_size (sizeof(signal_names)/sizeof(signal_names[0]))
+
+/* AIX 4.3 defines SIGRTMIN and SIGRTMAX as 888 and 999 respectively.
+   I don't want to allocate so much unused space for the intervening signal
+   numbers, so we just punt if SIGRTMAX is past the bounds of the
+   signal_names array (handled in configure). */
+#if defined (SIGRTMAX) && defined (UNUSABLE_RT_SIGNALS)
+#  undef SIGRTMAX
+#  undef SIGRTMIN
+#endif
+
+#if defined (SIGRTMAX) || defined (SIGRTMIN)
+#  define RTLEN 14
+#  define RTLIM 256
+#endif
+
+#if defined (BUILDTOOL)
+extern char *progname;
+#endif
+
+void
+initialize_signames ()
+{
+  register int i;
+#if defined (SIGRTMAX) || defined (SIGRTMIN)
+  int rtmin, rtmax, rtcnt;
+#endif
+
+  for (i = 1; i < signal_names_size; i++)
+    signal_names[i] = (char *)NULL;
+
+  /* `signal' 0 is what we do on exit. */
+  signal_names[0] = "EXIT";
+
+  /* Place signal names which can be aliases for more common signal
+     names first.  This allows (for example) SIGABRT to overwrite SIGLOST. */
+
+  /* POSIX 1003.1b-1993 real time signals, but take care of incomplete
+     implementations. According to the standard, both SIGRTMIN and
+     SIGRTMAX must be defined, SIGRTMIN must be strictly less than
+     SIGRTMAX, and the difference must be at least 7; that is, there
+     must be at least eight distinct real time signals. */
+
+  /* The generated signal names are SIGRTMIN, SIGRTMIN+1, ...,
+     SIGRTMIN+x, SIGRTMAX-x, ..., SIGRTMAX-1, SIGRTMAX. If the number
+     of RT signals is odd, there is an extra SIGRTMIN+(x+1).
+     These names are the ones used by ksh and /usr/xpg4/bin/sh on SunOS5. */
+
+#if defined (SIGRTMIN)
+  rtmin = SIGRTMIN;
+  signal_names[rtmin] = "SIGRTMIN";
+#endif
+
+#if defined (SIGRTMAX)
+  rtmax = SIGRTMAX;
+  signal_names[rtmax] = "SIGRTMAX";
+#endif
+
+#if defined (SIGRTMAX) && defined (SIGRTMIN)
+  if (rtmax > rtmin)
+    {
+      rtcnt = (rtmax - rtmin - 1) / 2;
+      /* croak if there are too many RT signals */
+      if (rtcnt >= RTLIM/2)
+	{
+	  rtcnt = RTLIM/2-1;
+#ifdef BUILDTOOL
+	  fprintf(stderr, "%s: error: more than %d real time signals, fix `%s'\n",
+		  progname, RTLIM, progname);
+#endif
+	}
+
+      for (i = 1; i <= rtcnt; i++)
+	{
+	  signal_names[rtmin+i] = (char *)malloc(RTLEN);
+	  if (signal_names[rtmin+i])
+	    sprintf (signal_names[rtmin+i], "SIGRTMIN+%d", i);
+	  signal_names[rtmax-i] = (char *)malloc(RTLEN);
+	  if (signal_names[rtmax-i])
+	    sprintf (signal_names[rtmax-i], "SIGRTMAX-%d", i);
+	}
+
+      if (rtcnt < RTLIM/2-1 && rtcnt != (rtmax-rtmin)/2)
+	{
+	  /* Need an extra RTMIN signal */
+	  signal_names[rtmin+rtcnt+1] = (char *)malloc(RTLEN);
+	  if (signal_names[rtmin+rtcnt+1])
+	    sprintf (signal_names[rtmin+rtcnt+1], "SIGRTMIN+%d", rtcnt+1);
+	}
+    }
+#endif /* SIGRTMIN && SIGRTMAX */
+
+#if defined (SIGLOST)	/* resource lost (eg, record-lock lost) */
+  signal_names[SIGLOST] = "SIGLOST";
+#endif
+
+/* AIX */
+#if defined (SIGMSG)	/* HFT input data pending */
+  signal_names[SIGMSG] = "SIGMSG";
+#endif
+
+#if defined (SIGDANGER)	/* system crash imminent */
+  signal_names[SIGDANGER] = "SIGDANGER";
+#endif
+
+#if defined (SIGMIGRATE) /* migrate process to another CPU */
+  signal_names[SIGMIGRATE] = "SIGMIGRATE";
+#endif
+
+#if defined (SIGPRE)	/* programming error */
+  signal_names[SIGPRE] = "SIGPRE";
+#endif
+
+#if defined (SIGPHONE)	/* Phone interrupt */
+  signal_names[SIGPHONE] = "SIGPHONE";
+#endif
+
+#if defined (SIGVIRT)	/* AIX virtual time alarm */
+  signal_names[SIGVIRT] = "SIGVIRT";
+#endif
+
+#if defined (SIGTINT)	/* Interrupt */
+  signal_names[SIGTINT] = "SIGTINT";
+#endif
+
+#if defined (SIGALRM1)	/* m:n condition variables */
+  signal_names[SIGALRM1] = "SIGALRM1";
+#endif
+
+#if defined (SIGWAITING)	/* m:n scheduling */
+  signal_names[SIGWAITING] = "SIGWAITING";
+#endif
+
+#if defined (SIGGRANT)	/* HFT monitor mode granted */
+  signal_names[SIGGRANT] = "SIGGRANT";
+#endif
+
+#if defined (SIGKAP)	/* keep alive poll from native keyboard */
+  signal_names[SIGKAP] = "SIGKAP";
+#endif
+
+#if defined (SIGRETRACT) /* HFT monitor mode retracted */
+  signal_names[SIGRETRACT] = "SIGRETRACT";
+#endif
+
+#if defined (SIGSOUND)	/* HFT sound sequence has completed */
+  signal_names[SIGSOUND] = "SIGSOUND";
+#endif
+
+#if defined (SIGSAK)	/* Secure Attention Key */
+  signal_names[SIGSAK] = "SIGSAK";
+#endif
+
+#if defined (SIGCPUFAIL)	/* Predictive processor deconfiguration */
+  signal_names[SIGCPUFAIL] = "SIGCPUFAIL";
+#endif
+
+#if defined (SIGAIO)	/* Asynchronous I/O */
+  signal_names[SIGAIO] = "SIGAIO";
+#endif
+
+#if defined (SIGLAB)	/* Security label changed */
+  signal_names[SIGLAB] = "SIGLAB";
+#endif
+
+/* SunOS5 */
+#if defined (SIGLWP)	/* Solaris: special signal used by thread library */
+  signal_names[SIGLWP] = "SIGLWP";
+#endif
+
+#if defined (SIGFREEZE)	/* Solaris: special signal used by CPR */
+  signal_names[SIGFREEZE] = "SIGFREEZE";
+#endif
+
+#if defined (SIGTHAW)	/* Solaris: special signal used by CPR */
+  signal_names[SIGTHAW] = "SIGTHAW";
+#endif
+
+#if defined (SIGCANCEL)	/* Solaris: thread cancellation signal used by libthread */
+  signal_names[SIGCANCEL] = "SIGCANCEL";
+#endif
+
+#if defined (SIGXRES)	/* Solaris: resource control exceeded */
+  signal_names[SIGXRES] = "SIGXRES";
+#endif
+
+#if defined (SIGJVM1)	/* Solaris: Java Virtual Machine 1 */
+  signal_names[SIGJVM1] = "SIGJVM1";
+#endif
+
+#if defined (SIGJVM2)	/* Solaris: Java Virtual Machine 2 */
+  signal_names[SIGJVM2] = "SIGJVM2";
+#endif
+
+#if defined (SIGDGTIMER1)
+  signal_names[SIGDGTIMER1] = "SIGDGTIMER1";
+#endif
+
+#if defined (SIGDGTIMER2)
+  signal_names[SIGDGTIMER2] = "SIGDGTIMER2";
+#endif
+
+#if defined (SIGDGTIMER3)
+  signal_names[SIGDGTIMER3] = "SIGDGTIMER3";
+#endif
+
+#if defined (SIGDGTIMER4)
+  signal_names[SIGDGTIMER4] = "SIGDGTIMER4";
+#endif
+
+#if defined (SIGDGNOTIFY)
+  signal_names[SIGDGNOTIFY] = "SIGDGNOTIFY";
+#endif
+
+/* Apollo */
+#if defined (SIGAPOLLO)
+  signal_names[SIGAPOLLO] = "SIGAPOLLO";
+#endif
+
+/* HP-UX */
+#if defined (SIGDIL)	/* DIL signal (?) */
+  signal_names[SIGDIL] = "SIGDIL";
+#endif
+
+/* System V */
+#if defined (SIGCLD)	/* Like SIGCHLD.  */
+  signal_names[SIGCLD] = "SIGCLD";
+#endif
+
+#if defined (SIGPWR)	/* power state indication */
+  signal_names[SIGPWR] = "SIGPWR";
+#endif
+
+#if defined (SIGPOLL)	/* Pollable event (for streams)  */
+  signal_names[SIGPOLL] = "SIGPOLL";
+#endif
+
+/* Unknown */
+#if defined (SIGWINDOW)
+  signal_names[SIGWINDOW] = "SIGWINDOW";
+#endif
+
+/* Linux */
+#if defined (SIGSTKFLT)
+  signal_names[SIGSTKFLT] = "SIGSTKFLT";
+#endif
+
+/* FreeBSD */
+#if defined (SIGTHR)	/* thread interrupt */
+  signal_names[SIGTHR] = "SIGTHR";
+#endif
+
+/* Common */
+#if defined (SIGHUP)	/* hangup */
+  signal_names[SIGHUP] = "SIGHUP";
+#endif
+
+#if defined (SIGINT)	/* interrupt */
+  signal_names[SIGINT] = "SIGINT";
+#endif
+
+#if defined (SIGQUIT)	/* quit */
+  signal_names[SIGQUIT] = "SIGQUIT";
+#endif
+
+#if defined (SIGILL)	/* illegal instruction (not reset when caught) */
+  signal_names[SIGILL] = "SIGILL";
+#endif
+
+#if defined (SIGTRAP)	/* trace trap (not reset when caught) */
+  signal_names[SIGTRAP] = "SIGTRAP";
+#endif
+
+#if defined (SIGIOT)	/* IOT instruction */
+  signal_names[SIGIOT] = "SIGIOT";
+#endif
+
+#if defined (SIGABRT)	/* Cause current process to dump core. */
+  signal_names[SIGABRT] = "SIGABRT";
+#endif
+
+#if defined (SIGEMT)	/* EMT instruction */
+  signal_names[SIGEMT] = "SIGEMT";
+#endif
+
+#if defined (SIGFPE)	/* floating point exception */
+  signal_names[SIGFPE] = "SIGFPE";
+#endif
+
+#if defined (SIGKILL)	/* kill (cannot be caught or ignored) */
+  signal_names[SIGKILL] = "SIGKILL";
+#endif
+
+#if defined (SIGBUS)	/* bus error */
+  signal_names[SIGBUS] = "SIGBUS";
+#endif
+
+#if defined (SIGSEGV)	/* segmentation violation */
+  signal_names[SIGSEGV] = "SIGSEGV";
+#endif
+
+#if defined (SIGSYS)	/* bad argument to system call */
+  signal_names[SIGSYS] = "SIGSYS";
+#endif
+
+#if defined (SIGPIPE)	/* write on a pipe with no one to read it */
+  signal_names[SIGPIPE] = "SIGPIPE";
+#endif
+
+#if defined (SIGALRM)	/* alarm clock */
+  signal_names[SIGALRM] = "SIGALRM";
+#endif
+
+#if defined (SIGTERM)	/* software termination signal from kill */
+  signal_names[SIGTERM] = "SIGTERM";
+#endif
+
+#if defined (SIGURG)	/* urgent condition on IO channel */
+  signal_names[SIGURG] = "SIGURG";
+#endif
+
+#if defined (SIGSTOP)	/* sendable stop signal not from tty */
+  signal_names[SIGSTOP] = "SIGSTOP";
+#endif
+
+#if defined (SIGTSTP)	/* stop signal from tty */
+  signal_names[SIGTSTP] = "SIGTSTP";
+#endif
+
+#if defined (SIGCONT)	/* continue a stopped process */
+  signal_names[SIGCONT] = "SIGCONT";
+#endif
+
+#if defined (SIGCHLD)	/* to parent on child stop or exit */
+  signal_names[SIGCHLD] = "SIGCHLD";
+#endif
+
+#if defined (SIGTTIN)	/* to readers pgrp upon background tty read */
+  signal_names[SIGTTIN] = "SIGTTIN";
+#endif
+
+#if defined (SIGTTOU)	/* like TTIN for output if (tp->t_local&LTOSTOP) */
+  signal_names[SIGTTOU] = "SIGTTOU";
+#endif
+
+#if defined (SIGIO)	/* input/output possible signal */
+  signal_names[SIGIO] = "SIGIO";
+#endif
+
+#if defined (SIGXCPU)	/* exceeded CPU time limit */
+  signal_names[SIGXCPU] = "SIGXCPU";
+#endif
+
+#if defined (SIGXFSZ)	/* exceeded file size limit */
+  signal_names[SIGXFSZ] = "SIGXFSZ";
+#endif
+
+#if defined (SIGVTALRM)	/* virtual time alarm */
+  signal_names[SIGVTALRM] = "SIGVTALRM";
+#endif
+
+#if defined (SIGPROF)	/* profiling time alarm */
+  signal_names[SIGPROF] = "SIGPROF";
+#endif
+
+#if defined (SIGWINCH)	/* window changed */
+  signal_names[SIGWINCH] = "SIGWINCH";
+#endif
+
+/* 4.4 BSD */
+#if defined (SIGINFO) && !defined (_SEQUENT_)	/* information request */
+  signal_names[SIGINFO] = "SIGINFO";
+#endif
+
+#if defined (SIGUSR1)	/* user defined signal 1 */
+  signal_names[SIGUSR1] = "SIGUSR1";
+#endif
+
+#if defined (SIGUSR2)	/* user defined signal 2 */
+  signal_names[SIGUSR2] = "SIGUSR2";
+#endif
+
+#if defined (SIGKILLTHR)	/* BeOS: Kill Thread */
+  signal_names[SIGKILLTHR] = "SIGKILLTHR";
+#endif
+
+  for (i = 0; i < NSIG; i++)
+    if (signal_names[i] == (char *)NULL)
+      {
+	signal_names[i] = (char *)malloc (18);
+	if (signal_names[i])
+	  sprintf (signal_names[i], "SIGJUNK(%d)", i);
+      }
+
+  signal_names[NSIG] = "DEBUG";
+  signal_names[NSIG+1] = "ERR";
+  signal_names[NSIG+2] = "RETURN";
+}
diff --git a/support/texi2dvi b/support/texi2dvi
new file mode 100755
index 0000000..17f4355
--- /dev/null
+++ b/support/texi2dvi
@@ -0,0 +1,1996 @@
+#! /bin/sh
+# texi2dvi --- produce DVI (or PDF) files from Texinfo (or (La)TeX) sources.
+#
+# Copyright 1992-2019 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License,
+# or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Originally written by Noah Friedman.
+#
+# Please send bug reports, etc. to bug-texinfo@gnu.org.
+# If possible, please send a copy of the output of the script called with
+# the `--debug' option when making a bug report.
+
+test -f /bin/ksh && test -z "$RUNNING_KSH" \
+  && { UNAMES=`uname -s`; test "x$UNAMES" = xULTRIX; } 2>/dev/null \
+  && { RUNNING_KSH=true; export RUNNING_KSH; exec /bin/ksh $0 ${1+"$@"}; }
+unset RUNNING_KSH
+
+# No failure shall remain unpunished.
+set -e
+
+# In case the default sed doesn't suffice.
+: ${SED=sed}
+
+program=`echo $0 | $SED -e 's!.*/!!'`
+
+build_mode=${TEXI2DVI_BUILD_MODE:-local}
+build_dir=${TEXI2DVI_BUILD_DIRECTORY:-.}
+
+orig_pwd=`pwd`
+
+# Initialize variables for option overriding and otherwise.
+# Don't use `unset' since old bourne shells don't have this command.
+# Instead, assign them an empty value.
+action=compile
+debug=false
+escape="\\"
+expand=false    # true for expansion via makeinfo
+includes=
+line_error=true # pass --file-line-error to TeX
+max_iters=7     # when to quit
+oname=          # --output
+out_lang=dvi
+quiet=false     # let the tools' message be displayed
+set_language=
+src_specials=
+shell_escape=
+latex2html=hevea  # or set to tex4ht
+textra=         # Extra TeX commands to insert in the input file.
+txiprereq=19990129 # minimum texinfo.tex version with macro expansion
+verb=false      # true for verbose mode
+translate_file= # name of charset translation file
+
+# We have to initialize IFS to space tab newline since we save and
+# restore IFS and apparently POSIX allows stupid/broken behavior with
+# empty-but-set IFS.
+# http://lists.gnu.org/archive/html/automake-patches/2006-05/msg00008.html
+# We need space, tab and newline, in precisely that order.  And don't leave
+# trailing blanks.
+space=' '
+tab='	'
+newline='
+'
+IFS="$space$tab$newline"
+
+: ${EGREP=egrep}
+
+# Systems which define $COMSPEC or $ComSpec use semicolons to separate
+# directories in TEXINPUTS -- except for Cygwin and Msys, where COMSPEC
+# might be inherited, but : is used.
+
+# In the case of Msys, uname returns a value derived from MSYSTEM, as
+# MSYSTEM is user configurable, it is not so safe to use it to detect
+# Msys. It is safer to use OSTYPE, this is why we set MSYSTEM to
+# $OSTYPE before calling uname
+if test -n "$COMSPEC$ComSpec" \
+   && MSYSTEM=$OSTYPE uname | $EGREP -iv 'cygwin|msys' >/dev/null; then
+  path_sep=";"
+else
+  path_sep=":"
+fi
+
+
+# Pacify verbose cds.
+CDPATH=${ZSH_VERSION+.}$path_sep
+
+
+# Now we define numerous functions, with no other executable code.
+# The main program is at the end of the file.
+
+	
+#  Standard help and version functions.
+#
+# usage - display usage and exit successfully.
+usage ()
+{
+  cat <<EOF
+Usage: $program [OPTION]... FILE...
+  or:  texi2pdf [OPTION]... FILE...
+  or:  pdftexi2dvi [OPTION]... FILE...
+
+Run each Texinfo or (La)TeX FILE through TeX in turn until all
+cross-references are resolved, building all indices.  The directory
+containing each FILE is searched for included files.  The suffix of FILE
+is used to determine its language ((La)TeX or Texinfo).  To process
+(e)plain TeX files, set the environment variable LATEX=tex.
+
+When invoked as \`texi2pdf' or given the option --pdf generate PDF output.
+Otherwise, generate DVI.
+
+General options:
+  -D, --debug         turn on shell debugging (set -x)
+  -h, --help          display this help and exit successfully
+  -o, --output=OFILE  leave output in OFILE; only one input FILE is allowed
+  -q, --quiet         no output unless errors
+  -v, --version       display version information and exit successfully
+  -V, --verbose       report on what is done
+  --max-iterations=N  don't process files more than N times [$max_iters]
+  --mostly-clean      remove auxiliary files or directories from
+                          previous runs (but not the output)
+
+Output format:
+      --dvi     output a DVI file [default]
+      --dvipdf  output a PDF file via DVI (using a dvi-to-pdf program)
+      --html    output an HTML file from LaTeX, using HeVeA
+      --info    output an Info file from LaTeX, using HeVeA
+  -p, --pdf     use pdftex or pdflatex for processing
+      --ps      output a PostScript file via DVI (using dvips)
+      --text    output a plain text file from LaTeX, using HeVeA
+
+TeX tuning:
+  -E, --expand               macro expansion using makeinfo
+  -I DIR                     search DIR for Texinfo files
+  -l, --language=LANG        specify LANG for FILE, either latex or texinfo
+      --no-line-error        do not pass --file-line-error to TeX
+      --shell-escape         pass --shell-escape to TeX
+      --src-specials         pass --src-specials to TeX
+      --translate-file=FILE  use given charset translation file for TeX
+  -t, --command=CMD          insert CMD in copy of input file
+
+Build modes:
+  --build=MODE         specify the treatment of auxiliary files [$build_mode]
+      --tidy           same as --build=tidy
+  -c, --clean          same as --build=clean
+      --build-dir=DIR  specify where the tidy compilation is performed;
+                         implies --tidy;
+                         defaults to TEXI2DVI_BUILD_DIRECTORY [$build_dir]
+
+The MODE specifies where the TeX compilation takes place, and, as a
+consequence, how auxiliary files are treated.  The build mode can also
+be set using the environment variable TEXI2DVI_BUILD_MODE.
+
+Valid values of MODE are:
+  \`local'      compile in the current directory, leaving all the auxiliary
+               files around.  This is the traditional TeX use.
+  \`tidy'       compile in a local *.t2d directory, where the auxiliary files
+               are left.  Output files are copied back to the original file.
+  \`clean'      same as \`tidy', but remove the auxiliary directory afterwards.
+               Every compilation therefore requires the full cycle.
+
+The values of these environment variables are used to run the
+corresponding commands, if they are set:
+
+  BIBER BIBTEX DVIPDF DVIPS EGREP HEVEA LATEX MAKEINDEX MAKEINFO
+  PDFLATEX PDFTEX SED T4HT TEX TEX4HT TEXINDEX TEXINDY THUMBPDF_CMD
+
+Regarding --dvipdf, if DVIPDF is not set in the environment, the
+following programs are looked for (in this order): dvipdfmx dvipdfm
+dvipdf dvi2pdf dvitopdf.
+
+If Texinfo is installed on your site, then the command
+
+  info texi2dvi
+  
+should give you access to more documentation.
+
+Report bugs to bug-texinfo@gnu.org,
+general questions and discussion to help-texinfo@gnu.org.
+GNU Texinfo home page: <http://www.gnu.org/software/texinfo/>
+General help using GNU software: <http://www.gnu.org/gethelp/>
+EOF
+  exit 0
+}
+
+
+# version - Display version info and exit successfully.
+version ()
+{
+  cat <<EOF
+texi2dvi (GNU Texinfo 6.7)
+
+Copyright (C) 2019 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+EOF
+  exit 0
+}
+
+
+#  Generic auxiliary functions.
+
+# Used to access files and directories after we have changed directory
+# (for --tidy).
+rel=
+
+# Change directory, updating some relative paths.
+cd_dir ()
+{
+  cd "$1"
+
+  # Check if argument or input file is absolute, and if so, make all the path 
+  # variables absolute.
+  use_absolute=false
+  case $1 in
+  [\\/]* | ?:[\\/]*)  # absolute path
+    use_absolute=true ;;
+  esac
+  case $in_input in
+  [\\/]* | ?:[\\/]*)
+    use_absolute=true ;;
+  esac
+
+  if $use_absolute ; then
+    for cdd_dir in work_build workdir t2ddir work_bak in_input in_dir; do
+      eval "$cdd_dir=\`absolute \$$cdd_dir\`"
+    done
+    return
+  fi
+
+  # Replace each path component with ".." and add a single trailing slash.
+  rel=`echo "$1" | \$SED -e 's/[^/\\][^/\\]*/../g' -e 's/[/\\]*$/\//'`
+}
+
+# cd_orig - Return to the original directory.
+cd_orig ()
+{
+  # In case $orig_pwd is on a different drive (for DOS).
+  cd /
+
+  # Return to the original directory so that
+  # - the next file is processed in correct conditions
+  # - the temporary file can be removed
+  cd "$orig_pwd" || exit 1
+
+  rel=
+}
+
+
+# func_dirname FILE - Return the directory part of FILE.
+func_dirname ()
+{
+  dirname "$1" 2>/dev/null \
+  || { echo "$1" | $SED 's!/[^/]*$!!;s!^$!.!'; }
+}
+
+
+# noext FILE - Return FILE with one extension removed:
+#   foo.bar.baz -> foo.bar
+noext ()
+{
+  echo "$1" | $SED -e 's/\.[^/.][^/.]*$//'
+}
+
+
+# absolute NAME - Return an absolute path to NAME.
+absolute ()
+{
+  case $1 in
+   [\\/]* | ?:[\\/]*)
+      # Absolute paths don't need to be expanded.
+      echo "$1"
+      ;;
+   *) absolute_slashes=`echo "$1" | $SED -n 's,.*[^/]\(/*\)$,\1,p'`
+      absolute_rel=$orig_pwd/`func_dirname "$1"`
+      if test -d "$absolute_rel"; then
+        (cd "$absolute_rel" 2>/dev/null \
+         && absolute_name=`pwd`/`basename "$1"`"$absolute_slashes"
+         echo "$absolute_name")
+      else
+        error 1 "not a directory: $absolute_rel"
+      fi
+      ;;
+  esac
+}
+
+
+# ensure_dir DIR1 DIR2... - Make sure given directories exist.
+ensure_dir ()
+{
+  for dir
+  do
+    # Beware that in parallel builds we may have several concurrent
+    # attempts to create the directory.  So fail only if "mkdir"
+    # failed *and* the directory still does not exist.
+    test -d "$dir" \
+      || mkdir "$dir" \
+      || test -d "$dir" \
+      || error 1 "cannot create directory: $dir"
+  done
+}
+
+
+# error EXIT_STATUS LINE1 LINE2... - Report an error and exit with
+#   failure if EXIT_STATUS is non-null.
+error ()
+{
+  error_status="$1"
+  shift
+  report "$@"
+  if test "$error_status" != 0; then
+    exit $error_status
+  fi
+}
+
+
+# findprog PROG - Return true if PROG is somewhere in PATH, else false.
+findprog ()
+{
+  saveIFS="$IFS"
+  IFS=$path_sep  # break path components at the path separator
+  for dir in $PATH; do
+    IFS=$saveIFS
+    # The basic test for an executable is `test -f $f && test -x $f'.
+    # (`test -x' is not enough, because it can also be true for directories.)
+    # We have to try this both for $1 and $1.exe.
+    #
+    # Note: On Cygwin and DJGPP, `test -x' also looks for .exe.  On Cygwin,
+    # also `test -f' has this enhancement, but not on DJGPP.  (Both are
+    # design decisions, so there is little chance to make them consistent.)
+    # Thusly, it seems to be difficult to make use of these enhancements.
+    #
+    if   { test -f "$dir/$1"     && test -x "$dir/$1"; } \
+      || { test -f "$dir/$1.exe" && test -x "$dir/$1.exe"; }; then
+      return 0
+    fi
+  done
+  return 1
+}
+
+# report LINE1 LINE2... - Echo each argument to stderr.
+report ()
+{
+  for i in "$@"
+  do
+    echo >&2 "$0: $i"
+  done
+}
+
+
+# run COMMAND-LINE - Run COMMAND-LINE verbosely, catching errors as failures.
+run ()
+{
+  verbose "Running $@"
+  "$@" 2>&5 1>&2 \
+  || error 1 "$1 failed"
+}
+
+
+# verbose WORD1 WORD2... - Echo concatenated WORDs to stderr, if $verb.
+verbose ()
+{
+  if $verb; then
+    echo >&2 "$0: $@"
+  fi
+}
+
+
+#  Handling lists.
+#
+# list_append LIST-NAME ELEM - Append ELEM to (the contents of) LIST-NAME.
+list_append ()
+{
+  list_name="$1"
+  shift
+  eval set X \$$list_name "$@"
+  shift
+  eval $list_name=\""$@"\"
+}
+
+
+# list_concat_dirs LIST-NAME DIR-LIST - Append to LIST-NAME all the
+# components (including empty ones) from the $path_sep-separated list
+# DIR-LIST.  Make the paths absolute.
+list_concat_dirs ()
+{
+  lcd_list="$1"
+  # Empty path components are meaningful to tex.  We rewrite them as
+  # `EMPTY' so they don't get lost when we split on $path_sep.
+  # Hopefully no one will have an actual directory named EMPTY.
+  lcd_replace_EMPTY="-e 's/^$path_sep/EMPTY$path_sep/g' \
+                     -e 's/$path_sep\$/${path_sep}EMPTY/g' \
+                     -e 's/$path_sep$path_sep/${path_sep}EMPTY${path_sep}/g'"
+  save_IFS=$IFS
+  IFS=$path_sep
+  set x `echo "$2" | eval $SED $lcd_replace_EMPTY`; shift
+  IFS=$save_IFS
+  for lcd_dir
+  do
+    case $lcd_dir in
+      EMPTY)
+       list_append $lcd_list ""
+       ;;
+      *)
+       if test -d $lcd_dir; then
+          dir=`absolute "$lcd_dir"`
+         list_append $lcd_list "$lcd_dir"
+       fi
+       ;;
+    esac
+  done
+}
+
+
+# list_prefix LIST-NAME SEP -> STRING - Return string with each element
+# of LIST-NAME preceded by SEP.
+list_prefix ()
+{
+  lp_separator="$2"
+  eval set X \$$1
+  shift
+  lp_result=''
+  for i
+  do
+    lp_result="$lp_result \"$lp_separator\" \"$i\""
+  done
+  echo "$lp_result"
+}
+
+# list_infix LIST-NAME SEP -> STRING - Same as list_prefix, but a separator.
+list_infix ()
+{
+  eval set X \$$1
+  shift
+  save_IFS="$IFS"
+  IFS=$path_sep
+  echo "$*"
+  IFS=$save_IFS
+}
+
+# list_dir_to_abs LIST-NAME - Convert list to using only absolute dir names.
+# Currently unused, but should replace absolute_filenames some day.
+list_dir_to_abs ()
+{
+  ldta_list="$1"
+  eval set X \$$ldta_list
+  shift
+  ldta_result=''
+  for dir
+  do
+    dir=`absolute "$dir"`
+    test -d "$dir" || continue
+    ldta_result="$ldata_result \"$dir\""
+  done
+  set X $ldta_result; shift
+  eval $ldta_list=\"$@\"
+}
+
+
+#  Language auxiliary functions. 
+#
+# out_lang_set LANG - set $out_lang to LANG (dvi, pdf, etc.), or error.
+out_lang_set ()
+{
+  case $1 in
+    dvi|dvipdf|html|info|pdf|ps|text) out_lang=$1;;
+    *) error 1 "invalid output format: $1";;
+  esac
+}
+
+# out_lang_tex - Return the tex output language (DVI or PDF) for $out_lang.
+out_lang_tex ()
+{
+  case $out_lang in
+    dvi | ps | dvipdf ) echo dvi;;
+    pdf ) echo $out_lang;;
+    html | info | text ) echo $out_lang;;
+    *)    error 1 "invalid out_lang: $1";;
+  esac
+}
+
+# out_lang_ext - Return the extension for $out_lang (pdf, dvi, etc.).
+out_lang_ext ()
+{
+  case $out_lang in
+    dvipdf ) echo pdf;;
+    dvi | html | info | pdf | ps | text ) echo $out_lang;;
+    *)    error 1 "invalid out_lang: $1";;
+  esac
+}
+
+
+#  TeX file auxiliary functions.
+#
+# absolute_filenames TEX-PATH -> TEX-PATH - Convert relative paths to
+# absolute, so we can run in another directory (e.g., in tidy build
+# mode, or during the macro-support detection).
+absolute_filenames ()
+{
+  # Empty path components are meaningful to tex.  We rewrite them as
+  # `EMPTY' so they don't get lost when we split on $path_sep.
+  # Hopefully no one will have an actual directory named EMPTY.
+  af_replace_empty="-e 's/^$path_sep/EMPTY$path_sep/g' \
+                    -e 's/$path_sep\$/${path_sep}EMPTY/g' \
+                    -e 's/$path_sep$path_sep/${path_sep}EMPTY${path_sep}/g'"
+  af_result=`echo "$1" | eval $SED $af_replace_empty`
+  save_IFS=$IFS
+  IFS=$path_sep
+  set x $af_result; shift
+  af_result=
+  af_path_sep=
+  for dir
+  do
+    case $dir in
+      EMPTY)
+        af_result=$af_result$af_path_sep
+        ;;
+      *)
+        if test -d "$dir"; then
+          af_result=$af_result$af_path_sep`absolute "$dir"`
+        else
+          # Even if $dir is not a directory, preserve it in the path.
+          # It might contain metacharacters that TeX will expand in
+          # turn, e.g., /some/path/{a,b,c}.  This will not get the
+          # implicit absolutification of the path, but we can't help that.
+          af_result=$af_result$af_path_sep$dir
+        fi
+        ;;
+    esac
+    af_path_sep=$path_sep
+  done
+  echo "$af_result"
+}
+
+
+# output_base_name FILE - Return the name of FILE, possibly renamed to
+# satisfy --output.  FILE is local, i.e., without any directory part.
+output_base_name ()
+{
+  case $oname in
+    '') echo "$1";;
+     *) obn_out_noext=`noext "$oname"`
+        obn_file_ext=`echo "$1" | $SED 's/^.*\.//'`
+        echo "$obn_out_noext.$obn_file_ext"
+      ;;
+  esac
+}
+
+
+# destdir - Return the directory where the output is expected.
+destdir ()
+{
+  case $oname in
+    '')  echo "$orig_pwd";;
+    *)   dirname "$oname";;
+  esac
+}
+
+
+# move_to_dest FILE... - Move FILE(s) to the place where the user expects.
+# Truly move it, that is, it must not remain in its build location
+# unless that is also the output location.  (Otherwise it might appear
+# as an extra file in make distcheck.)
+#
+# FILE can be the principal output (in which case -o directly applies),
+# or an auxiliary file with the same base name.
+move_to_dest ()
+{
+#  echo "move_to_dest $*, tidy=$tidy, oname=$oname"
+
+  # If we built in place and have no output name, there is nothing to
+  # do, so just return.
+  case $tidy:$oname in
+    false:) return;;
+  esac
+
+  for file
+  do
+    test -f "$file" \
+    || error 1 "no such file or directory: $file"
+    case $tidy:$oname in
+      true:)  mtd_destdir=$orig_pwd
+              mtd_destfile=$mtd_destdir/$file;;
+      true:*) mtd_destfile=`output_base_name "$file"`
+              mtd_destdir=`dirname "$mtd_destfile"`;;
+      false:*) mtd_destfile=$oname
+               mtd_destdir=`dirname "$mtd_destfile"`;;
+    esac
+ 
+    # We want to compare the source location and the output location,
+    # and if they are different, do the move.  But if they are the
+    # same, we must preserve the source.  Since we can't assume
+    # stat(1) or test -ef is available, resort to comparing the
+    # directory names, canonicalized with pwd.  We can't use cmp -s
+    # since the output file might not actually change from run to run;
+    # e.g., TeX DVI output is timestamped to only the nearest minute.
+    mtd_destdir=`cd "$mtd_destdir" && pwd`
+    mtd_destbase=`basename "$mtd_destfile"`
+
+    mtd_sourcedir=`dirname "$file"`
+    mtd_sourcedir=`cd "$mtd_sourcedir" && pwd`
+    mtd_sourcebase=`basename "$file"`
+
+    if test "$mtd_sourcedir/$mtd_sourcebase" != "$mtd_destdir/$mtd_destbase"
+    then
+      verbose "Moving $file to $mtd_destfile"
+      rm -f "$mtd_destfile"
+      mv "$file" "$mtd_destfile"
+    fi
+  done
+}
+
+
+#  Managing xref files.
+#
+# aux_file_p FILE - Echo FILE if FILE is an aux file.
+aux_file_p ()
+{
+  test -f "$1" || return 0
+  case $1 in
+    *.aux) echo "$1";;
+    *)     return 0;;
+  esac
+}
+
+# bibaux_file_p FILE - Echo FILE if FILE contains citation requests.
+bibaux_file_p ()
+{
+  test -s "$1" || return 0
+  if (grep '^\\bibstyle[{]' "$1"   \
+      && grep '^\\bibdata[{]' "$1" \
+      ## The following line is suspicious: fails when there
+      ## are citations in sub aux files.  We need to be
+      ## smarter in this case.
+      ## && grep '^\\citation[{]' "$f"
+      ) >&6 2>&1;
+  then
+    echo "$1"
+  fi
+  return 0
+}
+
+# index_file_p FILE - Echo FILE if FILE is an index file.
+index_file_p ()
+{
+  test -f "$1" || return 0
+  case $in_lang:$latex2html:`out_lang_tex`:`$SED '1q' "$1"` in
+    # When working with TeX4HT, *.idx are created by LaTeX.  They must
+    # be processed to produce *.4ix, *.4dx files.  The *.4dx file is
+    # passed to makeindex to produce the *.ind file.  This sequence is
+    # handled by run_index, so we are only interested in the *.idx
+    # files, which have each "\indexentry" preceded by a
+    # "\beforeentry".
+    latex:tex4ht:html:"\\beforeentry {"*) echo $1;;
+
+    # When index.sty is used, there is a space before the brace.
+    latex:*:*:"\\indexentry{"*|latex:*:*:"\\indexentry {"*) echo $1;;
+
+    texinfo:*:*:"\\entry{"*) echo $1;;
+    texinfo:*:*:"@entry{"*) echo $1;;
+    # @entry is output from newer versions of texinfo.tex
+  esac
+  return 0
+}
+
+########### not used currently
+# xref_file_p FILE - Return success if FILE is an xref file (indexes,
+# tables and lists).
+xref_file_p ()
+{
+  test -f "$1" || return 1
+  # If the file is not suitable to be an index or xref file, don't
+  # process it.  It's suitable if the first character is a
+  # backslash or right quote or at, as long as the first line isn't
+  # \input texinfo.
+  case `$SED '1q' "$1"` in
+    "\\input texinfo"*) return 1;;
+    [\\''@]*)           return 0;;
+           *)           return 1;;
+  esac
+}
+
+
+# Used in generated_files_get
+generated_files_get_from_log ()
+{
+  if test -f "$1.log"; then
+    # Usually the output is like: \openout1 = `foobar.tex'.
+    # (including the final period)
+    # but luatex outputs: \openout1 = foobar.tex
+    # (no quotes, no period).
+    # So we have to make the punctuation optional.
+    grep '^\\openout[0-9]' "$1.log" \
+      | $SED -e "s/\\\\openout[^=]*= *[\`']*//" \
+           -e "s/'\.$//"
+  fi
+}
+
+# Used in generated_files_get
+generated_files_get_from_fls ()
+{
+  if test -f "$1.fls"; then
+    grep '^OUTPUT ' "$1.fls" | cut -b 8- \
+      | grep -v '\.dvi$' | grep -v '\.log$' | grep -v '\.pdf$' || true
+  fi
+}
+
+# generated_files_get - Output the list of files generated by the TeX 
+#                       compilation.
+generated_files_get ()
+{
+  $generated_files_get_method "$in_noext"
+  if test $generated_files_get_method = generated_files_get_from_fls; then
+    if test -r "$in_noext.fl"; then
+      report 'WARNING!!  The fl index may typeset as garbage!' # goes to stderr
+      report 'Try upgrading your version of texinfo.tex, or else try setting'
+      report 'the environment variable TEXI2DVI_USE_RECORDER to '\''no'\''.'
+report 'Once you'\''ve done that, delete the file with an '\''fl'\'' extension.'
+    fi
+  fi
+}
+
+
+# xref_files_save - set xref_files_orig from xref_files_new, and save xref 
+#                   files in $work_bak.
+xref_files_save ()
+{
+  # Save copies of auxiliary files for later comparison.
+  xref_files_orig=$xref_files_new
+  if test -n "$xref_files_orig"; then
+    verbose "Backing up xref files: $xref_files_orig"
+    # The following line improves `cp $xref_files_orig "$work_bak"'
+    # by preserving the directory parts.  Think of
+    # cp chap1/main.aux chap2/main.aux $work_bak.
+    #
+    # Users may have, e.g., --keep-old-files.  Don't let this interfere.
+    # (Don't use unset for the sake of ancient shells.)
+    TAR_OPTIONS=; export TAR_OPTIONS
+    tar cf - $xref_files_orig | (cd "$rel$work_bak" && tar xf -)
+  fi
+
+  # Remove auxiliary files in same directory as main input file.  Otherwise,
+  # these will likely be read instead of those in the build dir.
+  if $tidy ; then
+    secondary_xref_files=`sorted_index_files`
+    for f in $xref_files_new $secondary_xref_files ; do
+      if test -f "$rel$in_dir/$f" ; then
+        remove $rel$in_dir/$f
+      fi
+    done
+  fi
+}
+
+
+# xref_files_changed - Return success if the xref files have changed
+# since the previous run.
+xref_files_changed ()
+{
+  # LaTeX (and the package changebar) report in the LOG file if it
+  # should be rerun.  This is needed for files included from
+  # subdirs, since texi2dvi does not try to compare xref files in
+  # subdirs.  Performing xref files test is still good since LaTeX
+  # does not report changes in xref files.
+  if grep "Rerun to get" "$in_noext.log" >&6 2>&1; then
+    return 0
+  fi
+  # Similarly, check for biblatex report of whether rerunning is needed.
+  if grep "biblatex.*(re)run" "$in_noext.log" >&6 2>&1; then
+    return 0
+  fi
+
+  # If old and new lists don't have the same file list,
+  # then something has definitely changed.
+  xref_files_new=`generated_files_get`
+  verbose "Original xref files = $xref_files_orig"
+  verbose "New xref files      = $xref_files_new"
+  if test "x$xref_files_orig" != "x$xref_files_new"; then
+    return 0
+  fi
+
+  # Compare each file until we find a difference.
+  for this_file in $xref_files_new; do
+    verbose "Comparing xref file `echo $this_file | $SED 's|\./||g'` ..."
+    # cmp -s returns nonzero exit status if files differ.
+    if cmp -s "$this_file" "$rel$work_bak/$this_file"; then :; else
+      verbose "xref file `echo $this_file | $SED 's|\./||g'` differed ..."
+      if $debug; then
+        diff -u "$rel$work_bak/$this_file" "$this_file"
+      fi
+      return 0
+    fi
+  done
+
+  secondary_xref_files=`sorted_index_files`
+  verbose "Secondary xref files = $secondary_xref_files"
+  for this_file in $secondary_xref_files; do
+    if test -f $this_file; then :; else
+      verbose "$this_file missing ..."
+      return 0
+    fi
+  done
+
+  # No change.
+  return 1
+}
+
+#  Running the TeX suite.
+#
+# Set tex_cmd variable, for running TeX.
+make_tex_cmd ()
+{
+  case $in_lang:$latex2html:`out_lang_tex` in
+    latex:*:dvi|latex:tex4ht:html)
+        tex=${LATEX:-latex};;
+    latex:*:pdf)
+        tex=${PDFLATEX:-pdflatex};;
+    texinfo:*:dvi)
+        # MetaPost also uses the TEX environment variable.  If the user
+        # has set TEX=latex for that reason, don't bomb out.
+        case $TEX in
+          *latex) tex=tex;; # don't bother trying to find etex
+               *) tex=$TEX
+        esac;;
+    texinfo:*:pdf) tex=$PDFTEX;;
+    *) error 1 "$out_lang not supported for $in_lang";;
+  esac
+
+  # Beware of aux files in subdirectories that require the
+  # subdirectory to exist.
+  case $in_lang:$tidy in
+    latex:true)
+       $SED -n 's|^[ ]*\\include{\(.*\)/.*}.*|\1|p' "$in_input" |
+       sort -u |
+       while read d
+       do
+         ensure_dir "$work_build/$d"
+       done
+       ;;
+  esac
+
+  # Note that this will be used via an eval: quote properly.
+  tex_cmd="$tex"
+
+  # If possible, make TeX report error locations in GNU format.
+  if $line_error; then
+    if test "${tex_help:+set}" != set; then
+      # Go to a temporary directory to try --help, since old versions that
+      # don't accept --help will generate a texput.log.
+      tex_help_dir=$t2ddir/tex_help
+      ensure_dir "$tex_help_dir"
+      tex_help=`cd "$tex_help_dir" >&6 && $tex --help </dev/null 2>&1 || true`
+    fi
+    # The mk program and perhaps others want to parse TeX's
+    # original error messages.
+    case $tex_help in
+      *file-line-error*) tex_cmd="$tex_cmd --file-line-error";;
+    esac
+  fi
+
+  # Tell TeX about -recorder option, if specified
+  # recorder_option_maybe is in { " -recorder", "" }
+  tex_cmd="$tex_cmd$recorder_option_maybe"
+  
+  
+  # Tell TeX about TCX file, if specified.
+  test -n "$translate_file" \
+                       && tex_cmd="$tex_cmd --translate-file=$translate_file"
+
+  # Tell TeX to make source specials (for backtracking from output to
+  # source, given a sufficiently smart editor), if specified.
+  test -n "$src_specials" && tex_cmd="$tex_cmd $src_specials"
+
+  # Tell TeX to allow running external executables
+  test -n "$shell_escape" && tex_cmd="$tex_cmd $shell_escape"
+
+  # Run without interaction.
+  # \batchmode does not show terminal output at all, so we don't
+  # want that.  And even in batch mode, TeX insists on having input
+  # from the user.  Close its stdin to make it impossible.
+  tex_cmd="$tex_cmd </dev/null '${escape}nonstopmode'"
+}
+
+
+# run_tex - Run TeX, taking care of errors and logs.
+run_tex ()
+{
+  # Check for any unusual characters in the filename.
+  # However, >, \ and any whitespace characters are not supported
+  # filenames.
+  in_input_funnies=`echo "$in_input" \
+    | $SED -e 's![^}#$%&^_{~]!!g' -e 's!\(.\)!\1\''
+!g' | uniq`
+
+  if test -n "$in_input_funnies" ; then
+    # Make > an end group character, as it's unlikely to appear in
+    # a filename.
+    tex_cmd="$tex_cmd '${escape}bgroup${escape}catcode62=2${escape}relax'"
+
+    # If the filename has funny characters, change the TeX category codes of 
+    # some characters within a group, and use \expandafter to input the file
+    # outside of the group.
+    for w in $in_input_funnies ; do
+      tex_cmd="$tex_cmd '${escape}catcode\`${escape}$w=12${escape}relax'"
+    done
+
+    # Set \toks0 to "\input FILENAME\relax"
+    tex_cmd="$tex_cmd '${escape}toks0${escape}bgroup${escape}input' '$rel$in_input' '${escape}relax>"
+
+    # Expand \toks0 after the end of the group
+    tex_cmd="$tex_cmd${escape}expandafter${escape}egroup"
+    tex_cmd="$tex_cmd${escape}the${escape}toks0${escape}relax'"
+  else
+    # In the case of a simple filename, just pass the filename
+    # with no funny tricks.
+    tex_cmd="$tex_cmd '${escape}input' '$rel$in_input'"
+  fi
+
+  verbose "$0: Running $tex_cmd ..."
+  if (eval "$tex_cmd" >&5); then
+    case $out_lang in
+      dvi | pdf ) move_to_dest "$in_noext.$out_lang";;
+    esac
+  else
+    tex_failed=true
+  fi
+}
+
+
+# run_bibtex - Run bibtex (or biber) on current file
+# - if its input (AUX) exists,
+# - or if some citations are missing (LOG contains `Citation'),
+# - or if the LOG complains of a missing .bbl.
+#
+# Don't try to be too smart:
+# 1. Running bibtex only if the bbl file exists and is older than
+# the LaTeX file is wrong, since the document might include files
+# that have changed.
+#
+# 2. Because there can be several AUX (if there are \include's),
+# but a single LOG, looking for missing citations in LOG is
+# easier, though we take the risk of matching false messages.
+run_bibtex ()
+{
+  case $in_lang in
+    latex)   bibtex=${BIBTEX:-bibtex};;
+    texinfo) return;;
+  esac
+
+  # "Citation undefined" is for LaTeX, "Undefined citation" for btxmac.tex.
+  # The no .aux && \bibdata test is also for btxmac, in case it was the
+  # first run of a bibtex-using document.  Otherwise, it's possible that
+  # bibtex would never be run.
+  if test -r "$in_noext.aux" \
+     && test -r "$in_noext.log" \
+     && ( (grep 'Warning:.*Citation.*undefined' "$in_noext.log" \
+          || grep '.*Undefined citation' "$in_noext.log" \
+          || grep 'No file .*\.bbl\.' "$in_noext.log") \
+          || (grep 'No \.aux file' "$in_noext.log" \
+              && grep '^\\bibdata' "$in_noext.aux") ) \
+        >&6 2>&1; \
+  then
+    bibtex_aux=`filter_files bibaux_file_p`
+    for f in $bibtex_aux; do
+      run $bibtex "$f"
+    done
+  fi
+
+  # biber(+biblatex) check.
+  if test -r "$in_noext.bcf" \
+     && grep '</bcf:controlfile>' "$in_noext.bcf" >/dev/null; then
+    run ${BIBER:-biber} "$in_noext"
+  fi
+}
+
+
+# filter_file PREDICATE - Go through the list of files in xref_files_new
+# and use PREDICATE on each one to optionally print it or print other files 
+# based on the filename.
+filter_files ()
+{
+  test -n "$xref_files_new" || return 0
+  echo "$xref_files_new" |
+  # Filter existing files matching the criterion.
+  #
+  while read file; do
+    $1 "$file"
+  done |
+  sort |
+  # Some files are opened several times, e.g., listings.sty's *.vrb.
+  uniq
+}
+
+# run_index - Run texindex (or makeindex or texindy) on current index
+# files.  If they already exist, and after running TeX a first time the
+# index files don't change, then there's no reason to run TeX again.
+# But we won't know that if the index files are out of date or nonexistent.
+run_index ()
+{
+  index_files=`filter_files index_file_p`
+  test -n "$index_files" \
+  || return 0
+
+  : ${MAKEINDEX:=makeindex}
+  : ${TEXINDEX:=texindex}
+  : ${TEXINDY:=texindy}
+
+  case $in_lang:$latex2html:`out_lang_tex` in
+    latex:tex4ht:html)
+      for index_file in $index_files
+      do
+        index_noext=`noext "$index_file"`
+        run tex \
+            '\def\filename{{'"$index_noext"'}{idx}{4dx}{ind}}
+             \input idxmake.4ht'
+        run $MAKEINDEX -o $index_noext.ind $index_noext.4dx
+      done
+      ;;
+
+    latex:*)
+      if $TEXINDY --version >&6 2>&1; then
+        run $TEXINDY $index_files
+      else
+        run $MAKEINDEX $index_files
+      fi
+      ;;
+
+    texinfo:*)
+      run $TEXINDEX $index_files
+      ;;
+  esac
+}
+
+
+# run_tex4ht - Run the last two phases of TeX4HT: tex4ht extracts the
+# HTML from the instrumented DVI file, and t4ht converts the figures and
+# installs the files when given -d.
+#
+# Because knowing exactly which files are created is complex (in
+# addition the names are not simple to compute), which makes it
+# difficult to install the output files in a second step, we
+# tell t4ht to install the output files.
+run_tex4ht ()
+{
+  case $in_lang:$latex2html:`out_lang_tex` in
+    latex:tex4ht:html)
+      : ${TEX4HT:=tex4ht} ${T4HT:=t4ht}
+      run "$TEX4HT" "-f/$in_noext"
+      # Do not remove the / after the destdir.
+      run "$T4HT" "-d`destdir`/" "-f/$in_noext"
+      ;;
+  esac
+}
+
+
+# run_thumbpdf - Run thumbpdf.
+run_thumbpdf ()
+{
+  if test `out_lang_tex` = pdf \
+     && test -r "$in_noext.log" \
+     && grep 'thumbpdf\.sty'  "$in_noext.log" >&6 2>&1; \
+  then
+    thumbpdf=${THUMBPDF_CMD:-thumbpdf}
+    thumbcmd="$thumbpdf $in_dir/$in_noext"
+    verbose "Running $thumbcmd ..."
+    if $thumbcmd >&5; then
+      run_tex
+    else
+      report "$thumbpdf exited with bad status." \
+             "Ignoring its output."
+    fi
+  fi
+}
+
+
+# run_dvipdf FILE.dvi - Convert FILE.dvi to FILE.pdf.
+run_dvipdf ()
+{
+  # Find which dvi->pdf program is available.
+  if test -n "$DVIPDF"; then
+    dvipdf=$DVIPDF  # user envvar, use it without checking
+
+  elif test -z "$dvipdf"; then
+    for i in dvipdfmx dvipdfm dvipdf dvi2pdf dvitopdf; do
+      if findprog $i; then
+        dvipdf=$i
+      fi
+    done
+  fi
+  # These tools have varying interfaces, some 'input output', others
+  # 'input -o output'.  They all seem to accept 'input' only,
+  # outputting using the expected file name.
+  run $dvipdf "$1"
+  if test ! -f `echo "$1" | $SED -e 's/\.dvi$/.pdf/'`; then
+    error 1 "cannot find output file"
+  fi
+}
+
+# run_tex_suite - Run the TeX tools until a stable point is reached.
+run_tex_suite ()
+{
+  make_tex_cmd
+
+  # Move to the working directory.
+  if $tidy; then
+    verbose "cd $work_build"
+    cd_dir "$work_build" || exit 1
+  fi
+
+  # Count the number of cycles.
+  suite_cycle=0
+
+  # Start by checking the log files for what files were created last
+  # time.  This will mean that if they don't change, we finish in 1 cycle.
+  xref_files_new=`generated_files_get`
+  xref_files_save
+
+  while :; do
+    # check for (probably) LaTeX loop (e.g. varioref)
+    if test $suite_cycle -eq "$max_iters"; then
+      error 0 "Maximum of $max_iters cycles exceeded"
+      break
+    fi
+
+    # report progress
+    suite_cycle=`expr $suite_cycle + 1`
+    verbose "Cycle $suite_cycle for $command_line_filename"
+
+    tex_failed=false
+    run_core_conversion
+    xref_files_changed || break
+    xref_files_save
+
+    # We run bibtex first, because it's more likely for the indexes
+    # to change after bibtex is run than the reverse, though either
+    # would be rare.
+    run_bibtex
+    run_index
+  done
+
+  if $tex_failed ; then
+    # TeX failed, and the xref files did not change.
+    error 1 "$tex exited with bad status, quitting."
+  fi
+
+  # If we were using thumbpdf and producing PDF, then run thumbpdf
+  # and TeX one last time.
+  run_thumbpdf
+
+  # If we are using tex4ht, call it.
+  run_tex4ht
+
+  # Install the result if we didn't already (i.e., if the output is
+  # dvipdf or ps).
+  case $latex2html:$out_lang in
+    *:dvipdf)
+      run_dvipdf "$in_noext.`out_lang_tex`"
+      move_to_dest "$in_noext.`out_lang_ext`"
+      ;;
+    *:ps)
+      : ${DVIPS:=dvips}
+      run $DVIPS -o "$in_noext.`out_lang_ext`" "$in_noext.`out_lang_tex`"
+      move_to_dest "$in_noext.`out_lang_ext`"
+      ;;
+  esac
+
+  cd_orig
+}
+
+
+#  TeX processing auxiliary tools.
+#
+# run_makeinfo - Expand macro commands in the original source file using
+# Makeinfo.  Always use `end' footnote style, since the `separate' style
+# generates different output (arguably this is a bug in -E).  Discard
+# main info output, the user asked to run TeX, not makeinfo.
+run_makeinfo ()
+{
+  test $in_lang = texinfo \
+    || return 0
+
+  # Unless required by the user, makeinfo expansion is wanted only
+  # if texinfo.tex is too old.
+  if $expand; then
+    makeinfo=${MAKEINFO:-makeinfo}
+  else
+    # Check if texinfo.tex performs macro expansion by looking for
+    # its version.  The version is a date of the form YEAR-MO-DA.
+    # We don't need to use [0-9] to match the digits since anyway
+    # the comparison with $txiprereq, a number, will fail with non-digits.
+    # Run in a temporary directory to avoid leaving files.
+    version_test_dir=$t2ddir/version_test
+    ensure_dir "$version_test_dir"
+    if (
+       cd "$version_test_dir"
+       echo '\input texinfo.tex @bye' >txiversion.tex
+       # Be sure that if tex wants to fail, it is not interactive:
+       # close stdin.
+       $TEX txiversion.tex </dev/null >txiversion.out 2>txiversion.err
+    ); then :; else
+      report "texinfo.tex appears to be broken.
+This may be due to the environment variable TEX set to something
+other than (plain) tex, a corrupt texinfo.tex file, or 
+to tex itself simply not working."
+      cat "$version_test_dir/txiversion.out"
+      cat "$version_test_dir/txiversion.err" >&2
+      error 1 "quitting."
+    fi
+    eval `$SED -n 's/^.*\[\(.*\)version \(....\)-\(..\)-\(..\).*$/txiformat=\1 txiversion="\2\3\4"/p' "$version_test_dir/txiversion.out"`
+    verbose "texinfo.tex preloaded as \`$txiformat', version is \`$txiversion' ..."
+    if test "$txiprereq" -le "$txiversion" >&6 2>&1; then
+      makeinfo=
+    else
+      makeinfo=${MAKEINFO:-makeinfo}
+    fi
+    # If TeX is preloaded, offer the user this convenience:
+    if test "$txiformat" = Texinfo; then
+      escape=@
+    fi
+  fi
+
+  if test -n "$makeinfo"; then
+    # in_src: the file with macros expanded.
+    # Use the same basename to generate the same aux file names.
+    work_src=$workdir/src
+    ensure_dir "$work_src"
+    in_src=$work_src/$in_base
+    run_mi_includes=`list_prefix includes -I`
+    verbose "Macro-expanding $command_line_filename to $in_src ..."
+    # eval $makeinfo because it might be defined as something complex
+    # (running missing) and then we end up with things like '"-I"',
+    # and "-I" (including the quotes) is not an option name.  This
+    # happens with gettext 0.14.5, at least.
+    $SED "$comment_iftex" "$command_line_filename" \
+      | eval $makeinfo --footnote-style=end -I "$in_dir" $run_mi_includes \
+        -o /dev/null --macro-expand=- \
+      | $SED "$uncomment_iftex" >"$in_src"
+    # Continue only if everything succeeded.
+    if test $? -ne 0 \
+       || test ! -r "$in_src"; then
+      verbose "Expansion failed, ignored...";
+    else
+      in_input=$in_src
+    fi
+  fi
+}
+
+# Unfortunately, makeinfo --iftex --no-ifinfo doesn't work well enough
+# in versions before 5.0, as makeinfo can't parse the TeX commands
+# inside @tex blocks, so work around with sed.
+#
+# This sed script preprocesses Texinfo sources in order to keep the
+# iftex sections only.  We want to remove non-TeX sections, and comment
+# (with `@c _texi2dvi') TeX sections so that makeinfo does not try to
+# parse them.  Nevertheless, while commenting TeX sections, don't
+# comment @macro/@end macro so that makeinfo does propagate them.
+# Similarly, preserve the @top node to avoid makeinfo complaining about
+# it being missed.  Comment it out after preprocessing, so that it does
+# not appear in the generated document.
+#
+# We assume that `@c _texi2dvi' or `@c (_texi2dvi)' starting a line is
+# not present in the document.  Additionally, conditionally defined
+# macros inside the @top node may end up with the wrong value, although
+# this is unlikely in practice.
+#
+comment_iftex=\
+'/^@tex/,/^@end tex/{
+  s/^/@c _texi2dvi/
+}
+/^@iftex/,/^@end iftex/{
+  s/^/@c _texi2dvi/
+  /^@c _texi2dvi@macro/,/^@c _texi2dvi@end macro/{
+    s/^@c _texi2dvi//
+  }
+}
+/^@ifnottex/,/^@end ifnottex/{
+  s/^/@c (_texi2dvi)/
+  /^@c (_texi2dvi)@node Top/,/^@c (_texi2dvi)@end ifnottex/ {
+    /^@c (_texi2dvi)@end ifnottex/b
+    s/^@c (_texi2dvi)//
+  }
+}
+/^@ifinfo/,/^@end ifinfo/{
+  /^@node/p
+  /^@menu/,/^@end menu/p
+  t
+  s/^/@c (_texi2dvi)/
+}
+s/^@ifnotinfo/@c _texi2dvi@ifnotinfo/
+s/^@end ifnotinfo/@c _texi2dvi@end ifnotinfo/'
+
+# Uncomment @iftex blocks by removing any leading `@c texi2dvi' (repeated
+# copies can sneak in via macro invocations).  Likewise, comment out
+# the @top node inside a @ifnottex block.
+uncomment_iftex=\
+'s/^@c _texi2dvi\(@c _texi2dvi\)*//
+/^@c (_texi2dvi)@ifnottex/,/^@c (_texi2dvi)@end ifnottex/{
+  s/^/@c (_texi2dvi)/
+}'
+
+
+# insert_commands - Insert $textra commands at the beginning of the file. 
+# Recommended to be used for @finalout, @smallbook, etc.
+insert_commands ()
+{
+  if test -n "$textra"; then
+    # _xtr.  The file with the user's extra commands.
+    work_xtr=$workdir/xtr
+    in_xtr=$work_xtr/$in_base
+    ensure_dir "$work_xtr"
+    verbose "Inserting extra commands: $textra"
+    case $in_lang in
+      latex)   textra_cmd=1i;;
+      texinfo)
+        textra_cmd='/^\\input texinfo/a'
+        # insert after @setfilename line if present
+        if head -n 10 $in_input | grep '^@setfilename' ; then
+          textra_cmd='/^@setfilename/a'
+        fi
+        ;;
+      *)       error 1 "internal error, unknown language: $in_lang";;
+    esac
+    $SED "$textra_cmd\\
+$textra" "$in_input" >"$in_xtr"
+    in_input=$in_xtr
+  fi
+
+  case $in_lang:$latex2html:`out_lang_tex` in
+    latex:tex4ht:html)
+      # _tex4ht.  The file with the added \usepackage{tex4ht}.
+      work_tex4ht=$workdir/tex4ht
+      in_tex4ht=$work_tex4ht/$in_base
+      ensure_dir "$work_tex4ht"
+      verbose "Inserting \\usepackage{tex4ht}"
+      perl -pe 's<\\documentclass(?:\[.*\])?{.*}>
+                 <$&\\usepackage[xhtml]{tex4ht}>' \
+        "$in_input" >"$in_tex4ht"
+      in_input=$in_tex4ht
+      ;;
+  esac
+}
+
+
+# compute_language FILENAME - Return the short string for the language
+# in which FILENAME is written: `texinfo' or `latex'.
+compute_language ()
+{
+  # If the user explicitly specified the language, use that.
+  # Otherwise, if the first line is \input texinfo, assume it's texinfo.
+  # Otherwise, guess from the file extension.
+  if test -n "$set_language"; then
+    echo $set_language
+  elif $SED 1q "$1" | grep 'input texinfo' >&6; then
+    echo texinfo
+  else
+    # Get the type of the file (latex or texinfo) from the given language
+    # we just guessed, or from the file extension if not set yet.
+    case $1 in
+      *.ltx | *.tex | *.drv | *.dtx) echo latex;;
+      *)                             echo texinfo;;
+    esac
+  fi
+}
+
+
+# run_hevea (MODE) - Convert to HTML/INFO/TEXT.
+#
+# Don't pass `-noiso' to hevea: it's useless in HTML since anyway the
+# charset is set to latin1, and troublesome in other modes since
+# accented characters loose their accents.
+#
+# Don't pass `-o DEST' to hevea because in that case it leaves all its
+# auxiliary files there too...  Too bad, because it means we will need
+# to handle images some day.
+run_hevea ()
+{
+  run_hevea_name="${HEVEA:-hevea}"
+  run_hevea_cmd="$run_hevea_name"
+
+  case $1 in
+    html) ;;
+    text|info) run_hevea_cmd="$run_hevea_cmd -$1";;
+    *) error 1 "run_hevea_cmd: invalid argument: $1";;
+  esac
+
+  # Compiling to the tmp directory enables to preserve a previous
+  # successful compilation.
+  run_hevea_cmd="$run_hevea_cmd -fix -O -o '$out_base'"
+  run_hevea_cmd="$run_hevea_cmd `list_prefix includes -I` -I '$orig_pwd' "
+  run_hevea_cmd="$run_hevea_cmd '$rel$in_input'"
+
+  if $debug; then
+    run_hevea_cmd="$run_hevea_cmd -v -v"
+  fi
+
+  verbose "running $run_hevea_cmd"
+  if eval "$run_hevea_cmd" >&5; then
+    # hevea leaves trailing white spaces, this is annoying.
+    case $1 in text|info)
+      perl -pi -e 's/[ \t]+$//g' "$out_base"*;;
+    esac
+    case $1 in
+    html|text) move_to_dest "$out_base";;
+    info) # There can be foo.info-1, foo.info-2 etc.
+               move_to_dest "$out_base"*;;
+    esac
+  else
+    error 1 "$run_hevea_name exited with bad status, quitting."
+  fi
+}
+
+
+# run_core_conversion - Run TeX (or HeVeA).
+run_core_conversion ()
+{
+  case $in_lang:$latex2html:`out_lang_tex` in
+    *:dvi|*:pdf|latex:tex4ht:html)
+        run_tex;;
+    latex:*:html|latex:*:text|latex:*:info)
+        run_hevea $out_lang;;
+    *)
+        error 1 "invalid input/output combination: $in_lang/$out_lang";;
+  esac
+}
+
+
+# compile - Run the full compilation chain, from pre-processing to
+# installation of the output at its expected location.
+compile ()
+{
+  # Set include path for tools:
+  #   .  Include current directory in case there are files there already, so
+  #     we don't have more TeX runs than necessary.  orig_pwd is used in case 
+  #     we are in clean build mode, where we have cd'd to a temp directory.
+  #   .  Include directory containing file, in case there are other
+  #     files @include'd.
+  #   .  Keep a final path_sep to get the default (system) TeX
+  #     directories included.
+  #   .  If we have any includes, put those at the end.
+
+  common="$orig_pwd$path_sep$in_dir$path_sep"
+  #
+  txincludes=`list_infix includes $path_sep`
+  test -n "$txincludes" && common="$common$txincludes$path_sep"
+  #
+  for var in $tex_envvars; do
+    eval val="\$common\$${var}_orig"
+    # Convert relative paths to absolute paths, so we can run in another
+    # directory (e.g., in clean build mode, or during the macro-support
+    # detection).
+    val=`absolute_filenames "$val"`
+    eval $var="\"$val\""
+    export $var
+    eval verbose \"$var=\'\$${var}\'\"
+  done
+
+  # --expand
+  run_makeinfo
+
+  # --command, --texinfo
+  insert_commands
+
+  # Run until a fixed point is reached.
+  run_tex_suite
+}
+
+# make_openout_test FLAGS EXTENSION
+# - Run TeX with an input file that performs an \openout.  Pass FLAGS to TeX.
+#
+make_openout_test ()
+{
+    recorder_option_maybe="$1"
+    make_tex_cmd
+
+    ensure_dir "$workdir"/check_recorder
+    cd_dir "$workdir"/check_recorder
+
+    cat > openout.tex <<EOF
+\newwrite\ourwrite
+\immediate\openout\ourwrite dum.dum
+\bye
+EOF
+    # \bye doesn't work for LaTeX, but it will cause latex
+    # to exit with an input error.
+    tex_cmd="$tex_cmd '${escape}input' ./openout.tex"
+    # ./ in case . isn't in path
+    verbose "$0: running $tex_cmd ..."
+    rm -fr "openout.$2"
+    (eval "$tex_cmd" >/dev/null 2>&1)
+}
+
+# Check tex supports -recorder option
+check_recorder_support ()
+{
+  verbose "Checking TeX recorder support..."
+  make_openout_test " -recorder" fls
+  if test -f openout.fls && grep '^OUTPUT dum.dum$' openout.fls > /dev/null
+  then
+    cd_orig
+    verbose "Checking TeX recorder support... yes"
+    return 0
+  else
+    cd_orig
+    verbose "Checking TeX recorder support... no"
+    return 1
+  fi
+}
+
+# Check tex supports \openout traces in log
+check_openout_in_log_support ()
+{
+  verbose "Checking TeX \openout in log support..."
+  make_openout_test "" log
+  if test -f openout.log \
+     && grep '^\\openout..\? *= *`\?dum\.dum'\''\?' openout.log >/dev/null
+  then
+    cd_orig
+    verbose "Checking TeX \openout in log support... yes"
+    return 0
+  else
+    cd_orig
+    verbose "Checking TeX \openout in log support... no"
+    return 1
+  fi
+}
+
+# Set that output auxiliary files are detected with the -recorder option,
+# which creates a file JOBNAME.fls which is a machine-readable listing of
+# files read and written during the job.
+set_aux_files_from_fls ()
+{
+  recorder_option_maybe=" -recorder"
+  generated_files_get_method=generated_files_get_from_fls
+}
+
+# Set that output auxiliary files are detected with searching for \openout
+# in the log file.
+set_aux_files_from_log ()
+{
+  recorder_option_maybe=''
+  generated_files_get_method=generated_files_get_from_log
+}
+
+# Decide whether output auxiliary files are detected with the -recorder
+# option, or by searching for \openout in the log file.
+decide_aux_files_method ()
+{
+  # Select output file detection method
+  # Valid values of TEXI2DVI_USE_RECORDER are:
+  #   yes           use the -recorder option, no checks.
+  #   no            scan for \openout in the log file, no checks.
+  #   yesmaybe      check whether -recorder option is supported, and if yes
+  #                use it, otherwise check for tracing \openout in the
+  #                log file is supported, and if yes use it, else it is an 
+  #                error.
+  #   nomaybe      same as `yesmaybe', except that the \openout trace in
+  #                log file is checked first.
+  #
+  #  The default behaviour is `nomaybe'.
+
+  test -n "$TEXI2DVI_USE_RECORDER" || TEXI2DVI_USE_RECORDER=nomaybe
+
+  case $TEXI2DVI_USE_RECORDER in
+    yes) set_aux_files_from_fls;;
+
+    no)	set_aux_files_from_log;;
+
+    yesmaybe)
+      if check_recorder_support; then
+        set_aux_files_from_fls
+      elif check_openout_in_log_support; then
+        set_aux_files_from_log
+      else
+        error 1 "TeX neither supports -recorder nor outputs \\openout lines in its log file"
+      fi
+      ;;
+
+    nomaybe)
+      if check_openout_in_log_support; then
+        set_aux_files_from_log
+      elif check_recorder_support; then
+        set_aux_files_from_fls
+      else
+        error 1 "TeX neither supports -recorder nor outputs \\openout lines in its log file"
+      fi
+      ;;
+    
+    *) error 1 "Invalid value of TEXI2DVI_USE_RECORDER environment variable : $TEXI2DVI_USE_RECORDER.";;
+
+  esac
+}
+
+# remove FILE...
+remove ()
+{
+  verbose "Removing" "$@"
+  rm -rf "$@"
+}
+
+
+# all_files - Echo the names of all files generated, including those by
+#             auxiliary tools like texindex.
+all_files ()
+{
+  echo $in_noext.log
+  echo $in_noext.fls
+  echo $xref_files_new
+  echo `sorted_index_files`
+}
+
+sorted_index_files ()
+{
+  filter_files sorted_index_filter
+}
+
+# Print the name of a generated file based on FILE if there is one.
+sorted_index_filter ()
+{
+  case $in_lang in
+    texinfo)
+      # texindex: texinfo.cp -> texinfo.cps
+      if test -n "`index_file_p $1`" ; then
+        echo $1s
+      fi
+      ;;
+  esac
+}
+
+
+# Not currently used - use with filter_files to add secondary files created by 
+# bibtex
+bibtex_secondary_files ()
+{
+  case $in_lang in
+    latex)
+      if test -n "`aux_file_p $1`"; then
+        # bibtex: *.aux -> *.bbl and *.blg.
+        echo $1 | $SED 's/^\(.*\)\.aux$/\1.bbl/'
+        echo $1 | $SED 's/^\(.*\)\.aux$/\1.blg/'
+      fi
+      ;;
+  esac
+}
+
+# mostly_clean - Remove auxiliary files and directories.  Changes back to
+# the original directory.
+mostly_clean ()
+{
+  cd_orig
+  set X "$t2ddir"
+  shift
+  $tidy || {
+    set X ${1+"$@"} `all_files`
+    shift
+  }
+  remove ${1+"$@"}
+}
+
+
+# cleanup - Remove what should be removed according to options.
+# Called at the end of each compilation cycle, and at the end of
+# the script.  Changes the current directory.
+cleanup ()
+{
+  case $clean:$tidy in
+    true:true) mostly_clean ;;                # build mode is "clean"
+    false:false) cd_orig; remove "$t2ddir";;  # build mode is "local"
+  esac
+}
+
+
+#  input_file_name_decode - Decode COMMAND_LINE_FILENAME, and set the
+# following shell variables:
+#
+# - COMMAND_LINE_FILENAME
+#   The filename given on the commmand line, but cleaned of TeX commands.
+# - IN_DIR
+#   The directory containing the input file.
+# - IN_BASE
+#   The input file base name (no directory part).
+# - IN_NOEXT
+#   The input file name with neither file extensions nor directory part.
+# - IN_INPUT
+#   The path to the input file for passing as a command-line argument
+#   to TeX.  Defaults to COMMAND_LINE_FILENAME, but might change if the
+#   input is preprocessed.
+input_file_name_decode ()
+{
+  case $command_line_filename in
+    *\\input{*}*)
+      # Let AUC-TeX error parser deal with line numbers.
+      line_error=false
+      command_line_filename=`\
+        expr X"$command_line_filename" : X'.*input{\([^}]*\)}'`
+      ;;
+  esac
+
+  # If the COMMAND_LINE_FILENAME is not absolute (e.g., --debug.tex),
+  # prepend `./' in order to avoid that the tools take it as an option.
+  echo "$command_line_filename" | LC_ALL=C $EGREP '^(/|[A-Za-z]:/)' >&6 \
+  || command_line_filename="./$command_line_filename"
+
+  # See if the file exists.  If it doesn't we're in trouble since, even
+  # though the user may be able to reenter a valid filename at the tex
+  # prompt (assuming they're attending the terminal), this script won't
+  # be able to find the right xref files and so forth.
+  test -r "$command_line_filename" \
+  || error 1 "cannot read $command_line_filename, skipping."
+
+  # Get the name of the current directory.
+  in_dir=`func_dirname "$command_line_filename"`
+
+  # Strip directory part but leave extension.
+  in_base=`basename "$command_line_filename"`
+  # Strip extension.
+  in_noext=`noext "$in_base"`
+
+  # The normalized file name to compile.  Must always point to the
+  # file to actually compile (in case of recoding, macro-expansion etc.).
+  in_input=$in_dir/$in_base
+
+
+  # Compute the output file name.
+  if test x"$oname" != x; then
+    out_name=$oname
+  else
+    out_name=$in_noext.`out_lang_ext`
+  fi
+  out_dir=`func_dirname "$out_name"`
+  out_dir_abs=`absolute "$out_dir"`
+  out_base=`basename "$out_name"`
+  out_noext=`noext "$out_base"`
+}
+
+
+# 
+#################### Main program starts ##########################
+
+# Initialize more variables.
+#
+# Save TEXINPUTS so we can construct a new TEXINPUTS path for each file.
+# Likewise for bibtex and makeindex.
+tex_envvars="BIBINPUTS BSTINPUTS DVIPSHEADERS INDEXSTYLE MFINPUTS MPINPUTS \
+TEXINPUTS TFMFONTS"
+for var in $tex_envvars; do
+  eval ${var}_orig=\$$var
+  export $var
+done
+
+# Push a token among the arguments that will be used to notice when we
+# ended options/arguments parsing.
+# Use "set dummy ...; shift" rather than 'set - ..." because on
+# Solaris set - turns off set -x (but keeps set -e).
+# Use ${1+"$@"} rather than "$@" because Digital Unix and Ultrix 4.3
+# still expand "$@" to a single argument (the empty string) rather
+# than nothing at all.
+arg_sep="$$--$$"
+set dummy ${1+"$@"} "$arg_sep"; shift
+
+while test x"$1" != x"$arg_sep"; do
+  # Handle --option=value by splitting apart and putting back on argv.
+  case "$1" in
+    --*=*)
+      opt=`echo "$1" | $SED -e 's/=.*//'`
+      val=`echo "$1" | $SED -e 's/[^=]*=//'`
+      shift
+      set dummy "$opt" "$val" ${1+"$@"}; shift
+      ;;
+  esac
+
+  case "$1" in
+    -@ ) escape=@;;
+    -~ ) verbose "Option -~ is obsolete: texi2dvi ignores it.";;
+    -b | --batch) ;; # Obsolete
+         --build)      shift; build_mode=$1;;
+         --build-dir)  shift; build_dir=$1; build_mode=tidy;;
+    -c | --clean) build_mode=clean;;
+    -D | --debug) debug=true;;
+    -e | -E | --expand) expand=true;;
+    -h | --help) usage;;
+    -I)   shift; list_concat_dirs includes "$1";;
+    -l | --lang | --language) shift; set_language=$1;;
+    --mostly-clean) action=mostly-clean;;
+    --no-line-error) line_error=false;;
+    --max-iterations) shift; max_iters=$1;;
+    -o | --out  | --output)
+      shift
+      # Make it absolute, just in case we also have --clean, or whatever.
+      oname=`absolute "$1"`;;
+
+    # Output formats.
+    -O|--output-format) shift; out_lang_set "$1";;
+       --dvi|--dvipdf|--html|--info|--pdf|--ps|--text)
+       out_lang_set `echo "x$1" | $SED 's/^x--//'`;;
+
+    -p) out_lang_set pdf;;
+    -q | -s | --quiet | --silent) quiet=true;;
+    --src-specials) src_specials=--src-specials;;
+    --shell-escape) shell_escape=--shell-escape;;  
+    --tex4ht) latex2html=tex4ht;;
+    -t | --texinfo | --command ) shift; textra="$textra\\
+"`echo "$1" | $SED 's/\\\\/\\\\\\\\/g'`;;
+    --translate-file ) shift; translate_file="$1";;
+    --tidy) build_mode=tidy;;
+    -v | --vers*) version;;
+    -V | --verb*) verb=true;;
+    --) # What remains are not options.
+      shift
+      while test x"$1" != x"$arg_sep"; do
+        set dummy ${1+"$@"} "$1"; shift
+        shift
+      done
+      break;;
+    -*)
+      error 1 "Unknown or ambiguous option \`$1'." \
+              "Try \`--help' for more information."
+      ;;
+    *) set dummy ${1+"$@"} "$1"; shift;;
+   esac
+   shift
+done
+# Pop the token
+shift
+
+# $tidy:  compile in a t2d directory.
+# $clean: remove all the aux files.
+case $build_mode in
+  local) clean=false; tidy=false;;
+  tidy)  clean=false; tidy=true;;
+  clean) clean=true;  tidy=true;;
+      *) error 1 "invalid build mode: $build_mode";;
+esac
+
+# Interpret remaining command line args as filenames.
+case $# in
+ 0)
+  error 2 "Missing file arguments." "Try \`--help' for more information."
+  ;;
+ 1) ;;
+ *)
+  if test -n "$oname"; then
+    error 2 "Can't use option \`--output' with more than one argument."
+  fi
+  ;;
+esac
+
+
+# We can't do much without tex.
+# End up with the TEX and PDFTEX variables set to what we are going to use.
+#
+# If $TEX is set to a directory, don't use it.
+test -n "$TEX" && test -d "$TEX" && unset TEX
+
+# But otherwise, use $TEX if it is set.
+if test -z "$TEX"; then
+  if findprog tex; then :; else cat <<EOM >&2
+You don't have a working TeX binary (tex) installed anywhere in
+your PATH, and texi2dvi cannot proceed without one.  If you want to use
+this script, you'll need to install TeX (if you don't have it) or change
+your PATH or TEX environment variable (if you do).  See the --help
+output for more details.
+
+For information about obtaining TeX, please see http://tug.org/texlive,
+or do a web search for TeX and your operating system or distro.
+EOM
+    exit 1
+  fi
+
+  # We want to use etex (or pdftex) if they are available, and the user
+  # didn't explicitly specify.  We don't check for elatex and pdfelatex
+  # because (as of 2003), the LaTeX team has asked that new distributions
+  # use etex by default anyway.
+  #
+  if findprog etex; then TEX=etex; else TEX=tex; fi
+fi
+
+# For many years, the pdftex binary has included the e-tex extensions,
+# but for those people with ancient TeX distributions ...
+if test -z "$PDFTEX"; then
+  if findprog pdfetex; then PDFTEX=pdfetex; else PDFTEX=pdftex; fi
+fi
+
+
+# File descriptor usage:
+# 0 standard input
+# 1 standard output (--verbose messages)
+# 2 standard error
+# 5 tools output (turned off by --quiet)
+# 6 tracing/debugging (set -x output, etc.)
+
+# Main tools' output (TeX, etc.) that TeX users are used to seeing.
+#
+# If quiet, discard, else redirect to the message flow.
+if $quiet; then
+  exec 5>/dev/null
+else
+  exec 5>&1
+fi
+
+
+# Enable tracing, and auxiliary tools output.
+# 
+# This fd should be used where you'd typically use /dev/null to throw
+# output away.  But sometimes it is convenient to see that output (e.g.,
+# from a grep) to aid debugging.  Especially debugging at distance, via
+# the user.
+# 
+if $debug; then
+  exec 6>&1
+  set -vx
+else
+  exec 6>/dev/null
+fi
+
+
+#  Main program main loop - TeXify each file in turn.
+for command_line_filename
+do
+  verbose "Processing $command_line_filename ..."
+
+  input_file_name_decode
+
+  # `texinfo' or `latex'?
+  in_lang=`compute_language "$command_line_filename"`
+
+  # An auxiliary directory used for all the auxiliary tasks involved
+  # in compiling this document.
+  case $build_dir in
+      '' | . ) t2ddir=$out_noext.t2d ;;
+      *) # Avoid collisions between multiple occurrences of the same
+         # file, so depend on the output path.  Remove leading `./',
+         # at least to avoid creating a file starting with `.!', i.e.,
+         # an invisible file. The sed expression is fragile if the cwd
+         # has active characters.  Transform / into ! so that we don't
+         # need `mkdir -p'.  It might be something to reconsider.
+         t2ddir=$build_dir/`echo "$out_dir_abs/$out_noext.t2d" |
+             $SED "s,^$orig_pwd/,,;s,^\./,,;s,/,!,g"`
+  esac
+  # Remove it at exit if clean mode.
+  trap "cleanup" 0 1 2 15
+
+  ensure_dir "$build_dir" "$t2ddir"
+
+  # Sometimes there are incompatibilities between auxiliary files for
+  # DVI and PDF.  The contents can also change whether we work on PDF
+  # and/or DVI.  So keep separate spaces for each.
+  workdir=$t2ddir/`out_lang_tex`
+  ensure_dir "$workdir"
+
+  # _build.  In a tidy build, where the auxiliary files are output.
+  if $tidy; then
+    work_build=$workdir/build
+  else
+    work_build=.
+  fi
+
+  # _bak.  Copies of the previous auxiliary files (another round is
+  # run if they differ from the new ones).
+  work_bak=$workdir/bak
+
+  # Make those directories.
+  ensure_dir "$work_build" "$work_bak"
+
+  # Decide how to find auxiliary files created by TeX.
+  decide_aux_files_method
+  
+  case $action in
+    compile)
+      # Compile the document.
+      compile
+      cleanup
+      ;;
+
+    mostly-clean)
+      xref_files_new=`generated_files_get`
+      mostly_clean
+      ;;
+  esac
+done
+
+verbose "done."
+exit 0 # exit successfully, not however we ended the loop.
+# Local Variables:
+# sh-basic-offset: 2
+# sh-indentation: 2
+# End:
diff --git a/support/texi2html b/support/texi2html
new file mode 100755
index 0000000..13b5588
--- /dev/null
+++ b/support/texi2html
@@ -0,0 +1,5428 @@
+#! /usr/bin/perl
+'di ';
+'ig 00 ';
+#+##############################################################################
+#
+# texi2html: Program to transform Texinfo documents to HTML
+#
+#    Copyright (C) 1999, 2000  Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#-##############################################################################
+
+# This requires perl version 5 or higher
+require 5.0;
+
+#++##############################################################################
+#
+# NOTE FOR DEBUGGING THIS SCRIPT:
+# You can run 'perl texi2html.pl' directly, provided you have
+# the environment variable T2H_HOME set to the directory containing
+# the texi2html.init file
+#
+#--##############################################################################
+
+# CVS version:
+# $Id: texi2html.pl,v 1.55 2000/07/27 14:39:41 obachman Exp $
+
+# Homepage:
+$T2H_HOMEPAGE = <<EOT;
+http://www.mathematik.uni-kl.de/~obachman/Texi2html
+EOT
+
+# Authors:  
+$T2H_AUTHORS = <<EOT;
+Written by: Lionel Cons <Lionel.Cons\@cern.ch> (original author)
+            Karl Berry  <karl\@freefriends.org>
+            Olaf Bachmann <obachman\@mathematik.uni-kl.de>
+            and many others.
+Maintained by: Olaf Bachmann <obachman\@mathematik.uni-kl.de>
+Send bugs and suggestions to <texi2html\@mathematik.uni-kl.de>
+EOT
+
+# Version: set in configure.in
+$THISVERSION = '1.64';
+$THISPROG = "texi2html $THISVERSION";	# program name and version
+  
+# The man page for this program is included at the end of this file and can be
+# viewed using the command 'nroff -man texi2html'.
+
+# Identity:
+
+$T2H_TODAY = &pretty_date;		# like "20 September 1993"
+# the eval prevents this from breaking on system which do not have
+# a proper getpwuid implemented
+eval { ($T2H_USER = (getpwuid ($<))[6]) =~ s/,.*//;}; # Who am i
+
+#+++############################################################################
+#                                                                              #
+# Initialization                                                               #
+# Pasted content of File $(srcdir)/texi2html.init: Default initializations     # 
+#                                                                              #
+#---############################################################################
+
+# leave this within comments, and keep the require statement
+# This way, you can directly run texi2html.pl, if $ENV{T2H_HOME}/texi2html.init
+# exists.
+
+# 
+# -*-perl-*-
+######################################################################
+# File: texi2html.init
+#
+# Sets default values for command-line arguments and for various customizable
+# procedures
+#
+# A copy of this file is pasted into the beginning of texi2html by
+# 'make texi2html'
+#
+# Copy this file and make changes to it, if you like.
+# Afterwards, either, load it with command-line option -init_file <your_init_file>
+#
+# $Id: texi2html.init,v 1.34 2000/07/27 14:09:02 obachman Exp $
+
+######################################################################
+# stuff which can also be set by command-line options
+#
+#
+# Note: values set here, overwrite values set by the command-line
+# options before -init_file and might still be overwritten by
+# command-line arguments following the -init_file option
+#
+
+# T2H_OPTIONS is a hash whose keys are the (long) names of valid
+# command-line options and whose values are a hash with the following keys:
+# type    ==> one of !|=i|:i|=s|:s (see GetOpt::Long for more info)
+# linkage ==> ref to scalar, array, or subroutine (see GetOpt::Long for more info)
+# verbose ==> short description of option (displayed by -h)
+# noHelp  ==> if 1 -> for "not so important options": only print description on -h 1
+#                2 -> for obsolete options: only print description on -h 2
+
+$T2H_DEBUG = 0;
+$T2H_OPTIONS -> {debug} =
+{
+ type => '=i',
+ linkage => \$main::T2H_DEBUG,
+ verbose => 'output HTML with debuging information',
+};
+
+$T2H_DOCTYPE = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">'; 
+$T2H_OPTIONS -> {doctype} = 
+{
+ type => '=s',
+ linkage => \$main::T2H_DOCTYPE,
+ verbose => 'document type which is output in header of HTML files',
+ noHelp => 1
+};
+
+$T2H_CHECK = 0;
+$T2H_OPTIONS -> {check} =
+{
+ type => '!',
+ linkage => \$main::T2H_CHECK,
+ verbose => 'if set, only check files and output all things that may be Texinfo commands',
+ noHelp => 1
+};
+
+# -expand
+# if set to "tex" (or, "info") expand @iftex and @tex (or, @ifinfo) sections
+# else, neither expand @iftex, @tex, nor @ifinfo sections
+$T2H_EXPAND = "info";
+$T2H_OPTIONS -> {expand} = 
+{
+ type => '=s',
+ linkage => \$T2H_EXPAND,
+ verbose => 'Expand info|tex|none section of texinfo source',
+};
+
+# - glossary
+#if set, uses section named `Footnotes' for glossary
+$T2H_USE_GLOSSARY = 0;
+T2H_OPTIONS -> {glossary} =
+{
+ type => '!',
+ linkage => \$T2H_USE_GLOSSARY,
+ verbose => "if set, uses section named `Footnotes' for glossary",
+ noHelp  => 1,
+};
+
+
+# -invisible
+# $T2H_INVISIBLE_MARK is the text used to create invisible destination
+# anchors for index links (you can for instance use the invisible.xbm
+# file shipped with this program). This is a workaround for a known
+# bug of many WWW browsers, including netscape.
+# For me, it works fine without it -- on the contrary: if there, it
+# inserts space between headers and start of text (obachman 3/99)
+$T2H_INVISIBLE_MARK = '';
+# $T2H_INVISIBLE_MARK = '&#160;';
+$T2H_OPTIONS -> {invisible} =
+{
+ type => '=s',
+ linkage => \$T2H_INVISIBLE_MARK,
+ verbose => 'use text in invisble anchot',
+ noHelp  => 1,
+};
+
+# -iso
+# if set, ISO8879 characters are used for special symbols (like copyright, etc)
+$T2H_USE_ISO = 0;
+$T2H_OPTIONS -> {iso} =
+{
+ type => 'iso',
+ linkage => \$T2H_USE_ISO,
+ verbose => 'if set, ISO8879 characters are used for special symbols (like copyright, etc)',
+ noHelp => 1,
+};
+
+# -I
+# list directories where @include files are searched for (besides the
+# directory of the doc file) additional '-I' args add to this list
+@T2H_INCLUDE_DIRS = (".");
+$T2H_OPTIONS -> {I} =
+{
+ type => '=s',
+ linkage => \@T2H_INCLUDE_DIRS,
+ verbose => 'append $s to the @include search path',
+};
+
+# -top_file
+# uses file of this name for top-level file
+# extension is manipulated appropriately, if necessary.
+# If empty, <basename of document>.html is used
+# Typically, you would set this to "index.html".
+$T2H_TOP_FILE = '';
+$T2H_OPTIONS -> {top_file} =
+{
+ type => '=s',
+ linkage => \$T2H_TOP_FILE,
+ verbose => 'use $s as top file, instead of <docname>.html',
+};
+
+
+# -toc_file
+# uses file of this name for table of contents file
+# extension is manipulated appropriately, if necessary.
+# If empty, <basename of document>_toc.html is used
+$T2H_TOC_FILE = '';
+$T2H_OPTIONS -> {toc_file} =
+{
+ type => '=s',
+ linkage => \$T2H_TOC_FILE,
+ verbose => 'use $s as ToC file, instead of <docname>_toc.html',
+};
+
+# -frames
+# if set, output two additional files which use HTML 4.0 "frames".
+$T2H_FRAMES = 0;
+$T2H_OPTIONS -> {frames} =
+{
+ type => '!',
+ linkage => \$T2H_FRAMES,
+ verbose => 'output files which use HTML 4.0 frames (experimental)',
+ noHelp => 1,
+};
+
+
+# -menu | -nomenu
+# if set, show the Texinfo menus
+$T2H_SHOW_MENU = 1;
+$T2H_OPTIONS -> {menu} =
+{
+ type => '!',
+ linkage => \$T2H_SHOW_MENU,
+ verbose => 'ouput Texinfo menus',
+};
+
+# -number | -nonumber
+# if set, number sections and show section names and numbers in references 
+# and menus
+$T2H_NUMBER_SECTIONS = 1;
+$T2H_OPTIONS -> {number} =
+{
+ type => '!',
+ linkage => \$T2H_NUMBER_SECTIONS,
+ verbose => 'use numbered sections'
+};
+
+# if set, and T2H_NUMBER_SECTIONS is set, then use node names in menu
+# entries, instead of section names
+$T2H_NODE_NAME_IN_MENU = 0;
+
+# if set and menu entry equals menu descr, then do not print menu descr.
+# Likewise, if node name equals entry name, do not print entry name.
+$T2H_AVOID_MENU_REDUNDANCY = 1;
+
+# -split section|chapter|none 
+# if set to 'section' (resp. 'chapter') create one html file per (sub)section
+# (resp. chapter) and separate pages for Top, ToC, Overview, Index,
+# Glossary, About.
+# otherwise, create monolithic html file which contains whole document
+#$T2H_SPLIT = 'section';
+$T2H_SPLIT = '';
+$T2H_OPTIONS -> {split} =
+{
+ type => '=s',
+ linkage => \$T2H_SPLIT,
+ verbose => 'split document on section|chapter else no splitting',
+};
+
+# -section_navigation|-no-section_navigation
+# if set, then navigation panels are printed at the beginning of each section
+# and, possibly at the end (depending on whether or not there were more than 
+# $T2H_WORDS_IN_PAGE  words on page
+# This is most useful if you do not want to have section navigation 
+# on -split chapter
+$T2H_SECTION_NAVIGATION = 1;
+$T2H_OPTIONS -> {sec_nav} =
+{
+ type => '!',
+ linkage => \$T2H_SECTION_NAVIGATION,
+ verbose => 'output navigation panels for each section',
+};
+
+# -subdir
+# if set put result files in this directory
+# if not set result files are put into current directory
+#$T2H_SUBDIR = 'html';
+$T2H_SUBDIR = '';
+$T2H_OPTIONS -> {subdir} =
+{
+ type => '=s',
+ linkage => \$T2H_SUBDIR,
+ verbose => 'put HTML files in directory $s, instead of $cwd',
+};
+
+# -short_extn
+# If this is set all HTML file will have extension ".htm" instead of
+# ".html". This is helpful when shipping the document to PC systems.
+$T2H_SHORTEXTN = 0;
+$T2H_OPTIONS -> {short_ext} =
+{
+ type => '!',
+ linkage => \$T2H_SHORTEXTN,
+ verbose => 'use "htm" extension for output HTML files',
+};
+
+
+# -prefix
+# Set the output file prefix, prepended to all .html, .gif and .pl files.
+# By default, this is the basename of the document
+$T2H_PREFIX = '';
+$T2H_OPTIONS -> {prefix} =
+{
+ type => '=s',
+ linkage => \$T2H_PREFIX,
+ verbose => 'use as prefix for output files, instead of <docname>',
+};
+
+# -o filename
+# If set, generate monolithic document output html into $filename
+$T2H_OUT = '';
+$T2H_OPTIONS -> {out_file} =
+{
+ type => '=s',
+ linkage => sub {$main::T2H_OUT = @_[1]; $T2H_SPLIT = '';},
+ verbose => 'if set, all HTML output goes into file $s',
+};
+
+# -short_ref
+#if set cross-references are given without section numbers
+$T2H_SHORT_REF = '';
+$T2H_OPTIONS -> {short_ref} =
+{
+ type => '!',
+ linkage => \$T2H_SHORT_REF,
+ verbose => 'if set, references are without section numbers',
+};
+
+# -idx_sum
+# if value is set, then for each @prinindex $what
+# $docu_name_$what.idx is created which contains lines of the form
+# $key\t$ref sorted alphabetically (case matters)
+$T2H_IDX_SUMMARY = 0;
+$T2H_OPTIONS -> {idx_sum} =
+{
+ type => '!',
+ linkage => \$T2H_IDX_SUMMARY,
+ verbose => 'if set, also output index summary',
+ noHelp  => 1,
+};
+
+# -verbose
+# if set, chatter about what we are doing
+$T2H_VERBOSE = '';
+$T2H_OPTIONS -> {Verbose} =
+{
+ type => '!',
+ linkage => \$T2H_VERBOSE,
+ verbose => 'print progress info to stdout',
+};
+
+# -lang
+# For page titles use $T2H_WORDS->{$T2H_LANG}->{...} as title.
+# To add a new language, supply list of titles (see $T2H_WORDS below).
+# and use ISO 639 language codes (see e.g. perl module Locale-Codes-1.02 
+# for  definitions)
+# Default's to 'en' if not set or no @documentlanguage is specified
+$T2H_LANG = '';
+$T2H_OPTIONS -> {lang} =
+{
+ type => '=s',
+ linkage => sub {SetDocumentLanguage($_[1])},
+ verbose => 'use $s as document language (ISO 639 encoding)',
+};
+
+# -l2h
+# if set, uses latex2html for generation of math content 
+$T2H_L2H = '';
+$T2H_OPTIONS -> {l2h} =
+{
+ type => '!',
+ linkage => \$T2H_L2H,
+ verbose => 'if set, uses latex2html for @math and @tex',
+};
+
+######################
+# The following options are only relevant if $T2H_L2H is set
+#
+# -l2h_l2h
+# name/location of latex2html progam
+$T2H_L2H_L2H = "latex2html";
+$T2H_OPTIONS -> {l2h_l2h} =
+{
+ type => '=s',
+ linkage => \$T2H_L2H_L2H,
+ verbose => 'program to use for latex2html translation',
+ noHelp => 1,
+};
+
+# -l2h_skip
+# if set, skips actual call to latex2html tries to reuse previously generated 
+# content, instead
+$T2H_L2H_SKIP = '';
+$T2H_OPTIONS -> {l2h_skip} =
+{
+ type => '!',
+ linkage => \$T2H_L2H_SKIP,
+ verbose => 'if set, tries to reuse previously latex2html output',
+ noHelp => 1,
+};
+
+# -l2h_tmp
+# if set, l2h uses this directory for temporarary files. The path
+# leading to this directory may not contain a dot (i.e., a "."),
+# otherwise, l2h will fail
+$T2H_L2H_TMP = '';
+$T2H_OPTIONS -> {l2h_tmp} =
+{
+ type => '=s',
+ linkage => \$T2H_L2H_TMP,
+ verbose => 'if set, uses $s as temporary latex2html directory',
+ noHelp => 1,
+};
+
+# if set, cleans intermediate files (they all have the prefix $doc_l2h_) 
+# of l2h 
+$T2H_L2H_CLEAN = 1;
+$T2H_OPTIONS -> {l2h_clean} =
+{
+ type => '!',
+ linkage => \$T2H_L2H_CLEAN,
+ verbose => 'if set, do not keep intermediate latex2html files for later reuse',
+ noHelp => 1,
+};
+
+$T2H_OPTIONS -> {D} =
+{
+ type => '=s',
+ linkage => sub {$main::value{@_[1]} = 1;},
+ verbose => 'equivalent to Texinfo "@set $s 1"',
+ noHelp => 1,
+};
+
+$T2H_OPTIONS -> {init_file} =
+{
+ type => '=s',
+ linkage => \&LoadInitFile,
+ verbose => 'load init file $s'
+};
+
+
+##############################################################################
+#
+# The following can only be set in the init file
+#
+##############################################################################
+
+# if set, center @image by default
+# otherwise, do not center by default
+$T2H_CENTER_IMAGE = 1;
+
+# used as identation for block enclosing command @example, etc
+# If not empty, must be enclosed in <td></td>
+$T2H_EXAMPLE_INDENT_CELL = '<td>&nbsp;</td>';
+# same as above, only for @small
+$T2H_SMALL_EXAMPLE_INDENT_CELL = '<td>&nbsp;</td>';
+# font size for @small
+$T2H_SMALL_FONT_SIZE = '-1';
+
+# if non-empty, and no @..heading appeared in Top node, then
+# use this as header for top node/section, otherwise use value of 
+# @settitle or @shorttitle (in that order)
+$T2H_TOP_HEADING = '';
+
+# if set, use this chapter for 'Index' button, else
+# use first chapter whose name matches 'index' (case insensitive)
+$T2H_INDEX_CHAPTER = '';
+
+# if set and $T2H_SPLIT is set, then split index pages at the next letter
+# after they have more than that many entries
+$T2H_SPLIT_INDEX = 100;
+
+# if set (e.g., to index.html) replace hrefs to this file 
+# (i.e., to index.html) by ./
+$T2H_HREF_DIR_INSTEAD_FILE = '';
+
+########################################################################
+# Language dependencies: 
+# To add a new language extend T2H_WORDS hash and create $T2H_<...>_WORDS hash
+# To redefine one word, simply do:
+# $T2H_WORDS->{<language>}->{<word>} = 'whatever' in your personal init file.
+#
+$T2H_WORDS_EN =
+{
+ # titles  of pages
+ 'ToC_Title' => 'Table of Contents',
+ 'Overview_Title' => 'Short Table of Contents',
+ 'Index_Title' => 'Index',
+ 'About_Title' => 'About this document',
+ 'Footnotes_Title' => 'Footnotes',
+ 'See' => 'See',
+ 'see' => 'see',
+ 'section' => 'section',
+# If necessary, we could extend this as follows: 
+#  # text for buttons
+#  'Top_Button' => 'Top',
+#  'ToC_Button' => 'Contents',
+#  'Overview_Button' => 'Overview',
+#  'Index_button' => 'Index',
+#  'Back_Button' => 'Back',
+#  'FastBack_Button' => 'FastBack',
+#  'Prev_Button' => 'Prev',
+#  'Up_Button' => 'Up',
+#  'Next_Button' => 'Next',
+#  'Forward_Button' =>'Forward',
+#  'FastWorward_Button' => 'FastForward',
+#  'First_Button' => 'First',
+#  'Last_Button' => 'Last',
+#  'About_Button' => 'About'
+};
+
+$T2H_WORD_DE =
+{
+ 'ToC_Title' => 'Inhaltsverzeichniss',
+ 'Overview_Title' => 'Kurzes Inhaltsverzeichniss',
+ 'Index_Title' => 'Index',
+ 'About_Title' => '&Uuml;ber dieses Dokument',
+ 'Footnotes_Title' => 'Fu&szlig;noten',
+ 'See' => 'Siehe',
+ 'see' => 'siehe',
+ 'section' => 'Abschnitt',
+};
+
+$T2H_WORD_NL =
+{
+ 'ToC_Title' => 'Inhoudsopgave',
+ 'Overview_Title' => 'Korte inhoudsopgave',
+ 'Index_Title' => 'Index', #Not sure ;-)
+ 'About_Title' => 'No translation available!', #No translation available!
+ 'Footnotes_Title' => 'No translation available!', #No translation available!
+ 'See' => 'Zie',
+ 'see' => 'zie',
+ 'section' => 'sectie',
+};
+
+$T2H_WORD_ES =
+{
+ 'ToC_Title' => '&iacute;ndice General',
+ 'Overview_Title' => 'Resumen del Contenido',
+ 'Index_Title' => 'Index', #Not sure ;-)
+ 'About_Title' => 'No translation available!', #No translation available!
+ 'Footnotes_Title' => 'Fu&szlig;noten',
+ 'See' => 'V&eacute;ase',
+ 'see' => 'v&eacute;ase',
+ 'section' => 'secci&oacute;n',
+};
+
+$T2H_WORD_NO =
+{
+ 'ToC_Title' => 'Innholdsfortegnelse',
+ 'Overview_Title' => 'Kort innholdsfortegnelse',
+ 'Index_Title' => 'Indeks', #Not sure ;-)
+ 'About_Title' => 'No translation available!', #No translation available!
+ 'Footnotes_Title' => 'No translation available!',
+ 'See' => 'Se',
+ 'see' => 'se',
+ 'section' => 'avsnitt',
+};
+
+$T2H_WORD_PT =
+{
+ 'ToC_Title' => 'Sum&aacute;rio',
+ 'Overview_Title' => 'Breve Sum&aacute;rio',
+ 'Index_Title' => '&Iacute;ndice', #Not sure ;-)
+ 'About_Title' => 'No translation available!', #No translation available!
+ 'Footnotes_Title' => 'No translation available!',
+ 'See' => 'Veja',
+ 'see' => 'veja',
+ 'section' => 'Se&ccedil;&atilde;o',
+};
+
+$T2H_WORDS =
+{
+ 'en' => $T2H_WORDS_EN,
+ 'de' => $T2H_WORDS_DE,
+ 'nl' => $T2H_WORDS_NL,
+ 'es' => $T2H_WORDS_ES,
+ 'no' => $T2H_WORDS_NO,
+ 'pt' => $T2H_WORDS_PT
+};
+
+@MONTH_NAMES_EN =
+(
+ 'January', 'February', 'March', 'April', 'May',
+ 'June', 'July', 'August', 'September', 'October',
+ 'November', 'December'
+);
+
+@MONTH_NAMES_DE =
+(
+ 'Januar', 'Februar', 'M&auml;rz', 'April', 'Mai',
+ 'Juni', 'Juli', 'August', 'September', 'Oktober',
+ 'November', 'Dezember'
+);
+
+@MONTH_NAMES_NL =
+(
+ 'Januari', 'Februari', 'Maart', 'April', 'Mei',
+ 'Juni', 'Juli', 'Augustus', 'September', 'Oktober',
+ 'November', 'December'
+);
+
+@MONTH_NAMES_ES =
+(
+ 'enero', 'febrero', 'marzo', 'abril', 'mayo',
+ 'junio', 'julio', 'agosto', 'septiembre', 'octubre',
+ 'noviembre', 'diciembre'
+);
+
+@MONTH_NAMES_NO =
+(
+
+ 'januar', 'februar', 'mars', 'april', 'mai',
+ 'juni', 'juli', 'august', 'september', 'oktober',
+ 'november', 'desember'
+);
+
+@MONTH_NAMES_PT =
+(
+ 'Janeiro', 'Fevereiro', 'Mar&ccedil;o', 'Abril', 'Maio',
+ 'Junho', 'Julho', 'Agosto', 'Setembro', 'Outubro',
+ 'Novembro', 'Dezembro'
+);
+
+
+$MONTH_NAMES =
+{
+    'en' => \@MONTH_NAMES_EN,
+    'de' => \@MONTH_NAMES_DE,
+    'es' => \@MONTH_NAMES_ES,
+    'nl' => \@MONTH_NAMES_NL,
+    'no' => \@MONTH_NAMES_NO,
+    'pt' => \@MONTH_NAMES_PT
+};
+########################################################################
+# Control of Page layout:
+# You can make changes of the Page layout at two levels:
+# 1.) For small changes, it is often enough to change the value of
+#     some global string/hash/array variables
+# 2.) For larger changes, reimplement one of the T2H_DEFAULT_<fnc>* routines,
+#     give them another name, and assign them to the respective
+#     $T2H_<fnc> variable.
+
+# As a general interface, the hashes T2H_HREF, T2H_NAME, T2H_NODE hold 
+# href, html-name, node-name of
+# This     -- current section (resp. html page)
+# Top      -- top page ($T2H_TOP_FILE)
+# Contents -- Table of contents
+# Overview -- Short table of contents
+# Index    -- Index page
+# About    -- page which explain "navigation buttons"
+# First    -- first node 
+# Last     -- last node
+#
+# Whether or not the following hash values are set, depends on the context 
+# (all values are w.r.t. 'This' section)
+# Next        -- next node of texinfo
+# Prev        -- previous node of texinfo
+# Up          -- up node of texinfo
+# Forward     -- next node in reading order
+# Back        -- previous node in reading order
+# FastForward -- if leave node, up and next, else next node
+# FastBackward-- if leave node, up and prev, else prev node
+#
+# Furthermore, the following global variabels are set:
+# $T2H_THISDOC{title}     -- title as set by @setttile
+# $T2H_THISDOC{fulltitle} -- full title as set by @title...
+# $T2H_THISDOC{subtitle}  -- subtitle as set by @subtitle
+# $T2H_THISDOC{author}    -- author as set by @author
+# 
+# and pointer to arrays of lines which need to be printed by t2h_print_lines 
+# $T2H_OVERVIEW      -- lines of short table of contents
+# $T2H_TOC           -- lines of table of contents
+# $T2H_TOP           -- lines of Top texinfo node 
+# $T2H_THIS_SECTION  -- lines of 'This' section
+
+#
+# There are the following subs which control the layout:
+#
+$T2H_print_section            = \&T2H_DEFAULT_print_section;
+$T2H_print_Top_header         = \&T2H_DEFAULT_print_Top_header;       
+$T2H_print_Top_footer	      = \&T2H_DEFAULT_print_Top_footer;       
+$T2H_print_Top		      = \&T2H_DEFAULT_print_Top;              
+$T2H_print_Toc		      = \&T2H_DEFAULT_print_Toc;              
+$T2H_print_Overview	      = \&T2H_DEFAULT_print_Overview;         
+$T2H_print_Footnotes	      = \&T2H_DEFAULT_print_Footnotes;        
+$T2H_print_About	      = \&T2H_DEFAULT_print_About;            
+$T2H_print_misc_header	      = \&T2H_DEFAULT_print_misc_header;      
+$T2H_print_misc_footer	      = \&T2H_DEFAULT_print_misc_footer;      
+$T2H_print_misc		      = \&T2H_DEFAULT_print_misc;
+$T2H_print_chapter_header     = \&T2H_DEFAULT_print_chapter_header;      
+$T2H_print_chapter_footer     = \&T2H_DEFAULT_print_chapter_footer;      
+$T2H_print_page_head	      = \&T2H_DEFAULT_print_page_head;        
+$T2H_print_page_foot	      = \&T2H_DEFAULT_print_page_foot;        
+$T2H_print_head_navigation    = \&T2H_DEFAULT_print_head_navigation;  
+$T2H_print_foot_navigation    = \&T2H_DEFAULT_print_foot_navigation;  
+$T2H_button_icon_img	      = \&T2H_DEFAULT_button_icon_img;        
+$T2H_print_navigation	      = \&T2H_DEFAULT_print_navigation;       
+$T2H_about_body		      = \&T2H_DEFAULT_about_body;            
+$T2H_print_frame              = \&T2H_DEFAULT_print_frame;
+$T2H_print_toc_frame          = \&T2H_DEFAULT_print_toc_frame;
+
+########################################################################
+# Layout for html for every sections
+#
+sub T2H_DEFAULT_print_section
+{
+  my $fh = shift;
+  local $T2H_BUTTONS = \@T2H_SECTION_BUTTONS;
+  &$T2H_print_head_navigation($fh) if $T2H_SECTION_NAVIGATION;
+  my $nw = t2h_print_lines($fh);
+  if ($T2H_SPLIT eq 'section' && $T2H_SECTION_NAVIGATION)
+  {
+    &$T2H_print_foot_navigation($fh, $nw);
+  }
+  else
+  {
+    print $fh '<HR SIZE="6">' . "\n";
+  }
+}
+
+###################################################################
+# Layout of top-page I recommend that you use @ifnothtml, @ifhtml,
+# @html within the Top texinfo node to specify content of top-level
+# page. 
+#
+# If you enclose everything in @ifnothtml, then title, subtitle,
+# author and overview is printed
+# T2H_HREF of Next, Prev, Up, Forward, Back are not defined
+# if $T2H_SPLIT then Top page is in its own html file
+sub T2H_DEFAULT_print_Top_header
+{
+  &$T2H_print_page_head(@_) if $T2H_SPLIT;
+  t2h_print_label(@_); # this needs to be called, otherwise no label set
+  &$T2H_print_head_navigation(@_);
+}
+sub T2H_DEFAULT_print_Top_footer
+{
+  &$T2H_print_foot_navigation(@_);
+  &$T2H_print_page_foot(@_) if $T2H_SPLIT; 
+}
+sub T2H_DEFAULT_print_Top
+{
+  my $fh = shift;
+
+  # for redefining navigation buttons use:
+  # local $T2H_BUTTONS = [...];
+  # as it is, 'Top', 'Contents', 'Index', 'About' are printed
+  local $T2H_BUTTONS = \@T2H_MISC_BUTTONS;
+  &$T2H_print_Top_header($fh);
+  if ($T2H_THIS_SECTION)
+  {
+    # if top-level node has content, then print it with extra header
+    print $fh "<H1>$T2H_NAME{Top}</H1>"
+      unless ($T2H_HAS_TOP_HEADING);
+    t2h_print_lines($fh, $T2H_THIS_SECTION)
+  }
+  else
+  {
+    # top-level node is fully enclosed in @ifnothtml
+    # print fulltitle, subtitle, author, Overview
+    print $fh 
+      "<CENTER>\n<H1>" .
+      join("</H1>\n<H1>", split(/\n/,  $T2H_THISDOC{fulltitle})) .
+      "</H1>\n";
+    print $fh "<H2>$T2H_THISDOC{subtitle}</H2>\n" if $T2H_THISDOC{subtitle};
+    print $fh "$T2H_THISDOC{author}\n" if $T2H_THISDOC{author};
+    print $fh <<EOT;
+</CENTER>
+<HR>
+<P></P>  
+<H2> Overview: </H2>
+<BLOCKQUOTE>  
+EOT
+    t2h_print_lines($fh, $T2H_OVERVIEW);
+    print $fh "</BLOCKQUOTE>\n";
+  }
+  &$T2H_print_Top_footer($fh);
+}
+
+###################################################################
+# Layout of Toc, Overview, and Footnotes pages
+# By default, we use "normal" layout 
+# T2H_HREF of Next, Prev, Up, Forward, Back, etc are not defined
+# use: local $T2H_BUTTONS = [...] to redefine navigation buttons
+sub T2H_DEFAULT_print_Toc
+{
+  return &$T2H_print_misc(@_);
+}
+sub T2H_DEFAULT_print_Overview
+{
+  return &$T2H_print_misc(@_);
+}
+sub T2H_DEFAULT_print_Footnotes
+{
+  return &$T2H_print_misc(@_);
+}
+sub T2H_DEFAULT_print_About
+{
+  return &$T2H_print_misc(@_);
+}
+
+sub T2H_DEFAULT_print_misc_header
+{
+  &$T2H_print_page_head(@_) if $T2H_SPLIT;
+  # this needs to be called, otherwise, no labels are set
+  t2h_print_label(@_); 
+  &$T2H_print_head_navigation(@_);
+}
+sub T2H_DEFAULT_print_misc_footer
+{
+  &$T2H_print_foot_navigation(@_);
+  &$T2H_print_page_foot(@_) if $T2H_SPLIT; 
+}
+sub T2H_DEFAULT_print_misc
+{
+  my $fh = shift;
+  local $T2H_BUTTONS = \@T2H_MISC_BUTTONS;
+  &$T2H_print_misc_header($fh);
+  print $fh "<H1>$T2H_NAME{This}</H1>\n";
+  t2h_print_lines($fh);
+  &$T2H_print_misc_footer($fh);
+}
+
+###################################################################
+# chapter_header and chapter_footer are only called if
+# T2H_SPLIT eq 'chapter'
+# chapter_header: after print_page_header, before print_section
+# chapter_footer: after print_section of last section, before print_page_footer
+# 
+# If you want to get rid of navigation stuff after each section,
+# redefine print_section such that it does not call print_navigation,
+# and put print_navigation into print_chapter_header
+@T2H_CHAPTER_BUTTONS =
+  (
+   'FastBack', 'FastForward', ' ', 
+   ' ', ' ', ' ', ' ',
+   'Top', 'Contents', 'Index', 'About', 
+  );
+
+sub T2H_DEFAULT_print_chapter_header
+{
+  # nothing to do there, by default
+  if (! $T2H_SECTION_NAVIGATION)
+  {
+    my $fh = shift;
+    local $T2H_BUTTONS = \@T2H_CHAPTER_BUTTONS;
+    &$T2H_print_navigation($fh);
+    print $fh "\n<HR SIZE=2>\n";
+  }
+}
+
+sub T2H_DEFAULT_print_chapter_footer
+{
+  local $T2H_BUTTONS = \@T2H_CHAPTER_BUTTONS;
+  &$T2H_print_navigation(@_);
+}
+###################################################################
+$T2H_TODAY = &pretty_date;		# like "20 September 1993"
+
+sub pretty_date {
+    local($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst);
+
+    ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime(time);
+    $year += ($year < 70) ? 2000 : 1900;
+    # obachman: Let's do it as the Americans do
+    return($MONTH_NAMES->{$T2H_LANG}[$mon] . ", " . $mday . " " . $year);
+}
+
+
+###################################################################
+# Layout of standard header and footer
+#
+
+# Set the default body text, inserted between <BODY ... > 
+###$T2H_BODYTEXT = 'LANG="EN" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#800080" ALINK="#FF0000"';
+$T2H_BODYTEXT = 'LANG="' . $T2H_LANG . '" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#800080" ALINK="#FF0000"';
+# text inserted after <BODY ...>
+$T2H_AFTER_BODY_OPEN = '';
+#text inserted before </BODY>
+$T2H_PRE_BODY_CLOSE = '';
+# this is used in footer
+$T2H_ADDRESS = "by <I>$T2H_USER</I> " if $T2H_USER;
+$T2H_ADDRESS .= "on <I>$T2H_TODAY</I>";
+# this is added inside <HEAD></HEAD> after <TITLE> and some META NAME stuff
+# can be used for <style> <script>, <meta> tags
+$T2H_EXTRA_HEAD = '';
+
+sub T2H_DEFAULT_print_page_head
+{
+  my $fh = shift; 
+  my $longtitle = "$T2H_THISDOC{title}: $T2H_NAME{This}";
+  print $fh <<EOT;
+<HTML>
+$T2H_DOCTYPE
+<!-- Created on $T2H_TODAY by $THISPROG -->
+<!-- 
+$T2H_AUTHORS 
+-->
+<HEAD>
+<TITLE>$longtitle</TITLE>
+
+<META NAME="description" CONTENT="$longtitle">
+<META NAME="keywords" CONTENT="$longtitle">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+<META NAME="Generator" CONTENT="$THISPROG">
+$T2H_EXTRA_HEAD
+</HEAD>
+
+<BODY $T2H_BODYTEXT>
+$T2H_AFTER_BODY_OPEN
+EOT
+}
+
+sub T2H_DEFAULT_print_page_foot
+{
+  my $fh = shift;
+  print $fh <<EOT;
+<BR>  
+<FONT SIZE="-1">
+This document was generated
+$T2H_ADDRESS
+using <A HREF="$T2H_HOMEPAGE"><I>texi2html</I></A>
+$T2H_PRE_BODY_CLOSE
+</BODY>
+</HTML>
+EOT
+}
+
+###################################################################
+# Layout of navigation panel
+
+# if this is set, then a vertical navigation panel is used
+$T2H_VERTICAL_HEAD_NAVIGATION = 0;
+sub T2H_DEFAULT_print_head_navigation
+{
+  my $fh = shift;
+  if ($T2H_VERTICAL_HEAD_NAVIGATION)
+  {
+    print $fh <<EOT;
+<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0">
+<TR VALIGN="TOP">
+<TD ALIGN="LEFT">
+EOT
+  }
+  &$T2H_print_navigation($fh, $T2H_VERTICAL_HEAD_NAVIGATION);
+  if ($T2H_VERTICAL_HEAD_NAVIGATION)
+  {
+    print $fh <<EOT;
+</TD>
+<TD ALIGN="LEFT">
+EOT
+  }
+  elsif ($T2H_SPLIT eq 'section')
+  {
+    print $fh "<HR SIZE=1>\n";
+  }
+}
+
+# Specifies the minimum page length required before a navigation panel
+# is placed at the bottom of a page (the default is that of latex2html)
+# T2H_THIS_WORDS_IN_PAGE holds number of words of current page
+$T2H_WORDS_IN_PAGE = 300;
+sub T2H_DEFAULT_print_foot_navigation
+{
+  my $fh = shift;
+  my $nwords = shift;
+  if ($T2H_VERTICAL_HEAD_NAVIGATION)
+  {
+    print $fh <<EOT;
+</TD>
+</TR>
+</TABLE>
+EOT
+  }
+  print $fh "<HR SIZE=1>\n";
+  &$T2H_print_navigation($fh) if ($nwords >= $T2H_WORDS_IN_PAGE)
+}
+
+######################################################################
+# navigation panel
+#
+# specify in this array which "buttons" should appear in which order
+# in the navigation panel for sections; use ' ' for empty buttons (space)
+@T2H_SECTION_BUTTONS =
+  (
+   'Back', 'Forward', ' ', 'FastBack', 'Up', 'FastForward',  
+   ' ', ' ', ' ', ' ',
+   'Top', 'Contents', 'Index', 'About', 
+  );
+
+# buttons for misc stuff
+@T2H_MISC_BUTTONS = ('Top', 'Contents', 'Index', 'About');
+
+# insert here name of icon images for buttons 
+# Icons are used, if $T2H_ICONS and resp. value are set
+%T2H_ACTIVE_ICONS =
+  (
+   'Top',      '',
+   'Contents', '',
+   'Overview', '',
+   'Index',    '',
+   'Back',     '',
+   'FastBack', '',
+   'Prev',     '',
+   'Up',       '',
+   'Next',     '',
+   'Forward',  '',
+   'FastForward', '',
+   'About' ,    '',
+   'First',    '',
+   'Last',     '',
+   ' ',        ''
+  );
+
+# insert here name of icon images for these, if button is inactive
+%T2H_PASSIVE_ICONS =
+  (
+   'Top',      '',
+   'Contents', '',
+   'Overview', '',
+   'Index',    '',
+   'Back',     '',
+   'FastBack', '',
+   'Prev',     '',
+   'Up',       '',
+   'Next',     '',
+   'Forward',  '',
+   'FastForward', '',
+   'About',     '',
+   'First',    '',
+   'Last',     '',
+  );
+
+# how to create IMG tag
+sub T2H_DEFAULT_button_icon_img
+{
+  my $button = shift;
+  my $icon = shift;
+  my $name = shift;
+  return qq{<IMG SRC="$icon" BORDER="0" ALT="$button: $name" ALIGN="MIDDLE">};
+}
+
+# Names of text as alternative for icons
+%T2H_NAVIGATION_TEXT =
+  (
+   'Top',      'Top',
+   'Contents', 'Contents',
+   'Overview', 'Overview',
+   'Index',    'Index',
+   ' ',        ' &nbsp; ',
+   'Back',     ' &lt; ',
+   'FastBack', ' &lt;&lt; ',
+   'Prev',     'Prev',
+   'Up',       ' Up ',
+   'Next',     'Next',
+   'Forward',  ' &gt; ',
+   'FastForward',  ' &gt;&gt; ',
+   'About',     ' ? ',
+   'First',    ' |&lt; ',
+   'Last',     ' &gt;| '
+  );
+
+sub T2H_DEFAULT_print_navigation
+{
+  my $fh = shift;
+  my $vertical = shift;
+  my $spacing = 1;
+  print $fh "<TABLE CELLPADDING=$spacing CELLSPACING=$spacing BORDER=0>\n";
+
+  print $fh "<TR>" unless $vertical;
+  for $button (@$T2H_BUTTONS)
+  {
+    print $fh qq{<TR VALIGN="TOP" ALIGN="LEFT">\n} if $vertical;
+    print $fh qq{<TD VALIGN="MIDDLE" ALIGN="LEFT">};
+
+    if (ref($button) eq 'CODE')
+    {
+      &$button($fh, $vertical);
+    }
+    elsif ($button eq ' ')
+    { # handle space button
+      print $fh 
+	$T2H_ICONS && $T2H_ACTIVE_ICONS{' '} ? 
+	 &$T2H_button_icon_img($button, $T2H_ACTIVE_ICONS{' '}) :
+	 $T2H_NAVIGATION_TEXT{' '};
+      next;
+    }
+    elsif ($T2H_HREF{$button})
+    { # button is active
+      print $fh   
+	 $T2H_ICONS && $T2H_ACTIVE_ICONS{$button} ? # use icon ? 
+	   t2h_anchor('', $T2H_HREF{$button},  # yes
+		    &$T2H_button_icon_img($button,
+					$T2H_ACTIVE_ICONS{$button},
+					$T2H_NAME{$button})) 
+	 : # use text
+	 "[" . 
+	 t2h_anchor('', $T2H_HREF{$button}, $T2H_NAVIGATION_TEXT{$button}) .
+	 "]";  
+    }
+    else
+    { # button is passive 
+      print $fh 
+	$T2H_ICONS && $T2H_PASSIVE_ICONS{$button} ?
+	 &$T2H_button_icon_img($button,
+			       $T2H_PASSIVE_ICONS{$button},
+			       $T2H_NAME{$button}) :
+	 
+	 "[" . $T2H_NAVIGATION_TEXT{$button} . "]";
+    }
+    print $fh "</TD>\n";
+    print $fh "</TR>\n" if $vertical;
+  }
+  print $fh "</TR>" unless $vertical;
+  print $fh "</TABLE>\n";
+}
+
+######################################################################
+# Frames: this is from "Richard Y. Kim" <ryk@coho.net>
+# Should be improved to be more conforming to other _print* functions
+
+sub T2H_DEFAULT_print_frame
+{
+  my $fh = shift;
+  print $fh <<EOT;
+<HTML>
+<HEAD><TITLE>$T2H_THISDOC{title}</TITLE></HEAD>
+<FRAMESET cols="140,*"> 
+  <FRAME name=toc  src="$docu_toc_frame_file">
+  <FRAME name=main src="$docu_doc">
+</FRAMESET> 
+</HTML>
+EOT
+}
+
+sub T2H_DEFAULT_print_toc_frame
+{
+  my $fh = shift;
+  &$T2H_print_page_head($fh);
+  print $fh <<EOT;
+<H2>Content</H2>
+EOT
+  print $fh map {s/HREF=/target=\"main\" HREF=/; $_;} @stoc_lines;
+  print $fh "</BODY></HTML>\n";
+}
+
+######################################################################
+# About page
+#
+
+# T2H_PRE_ABOUT might be a function
+$T2H_PRE_ABOUT = <<EOT;
+This document was generated $T2H_ADDRESS
+using <A HREF="$T2H_HOMEPAGE"><I>texi2html</I></A>
+<P></P>  
+EOT
+$T2H_AFTER_ABOUT = '';
+
+sub T2H_DEFAULT_about_body
+{
+  my $about;
+  if (ref($T2H_PRE_ABOUT) eq 'CODE')
+  {
+    $about = &$T2H_PRE_ABOUT();
+  }
+  else
+  {
+    $about = $T2H_PRE_ABOUT;
+  }
+  $about .= <<EOT;
+The buttons in the navigation panels have the following meaning:
+<P></P>
+<table border = "1">
+<TR>
+<TH> Button </TH>
+<TH> Name </TH>
+<TH> Go to </TH>
+<TH> From 1.2.3 go to</TH>
+</TR>
+EOT
+  
+  for $button (@T2H_SECTION_BUTTONS)
+  {
+    next if $button eq ' ' || ref($button) eq 'CODE';
+    $about .= <<EOT;
+<TR>
+<TD ALIGN="CENTER">
+EOT
+    $about .= 	
+      ($T2H_ICONS && $T2H_ACTIVE_ICONS{$button} ?
+       &$T2H_button_icon_img($button, $T2H_ACTIVE_ICONS{$button}) :
+       " [" . $T2H_NAVIGATION_TEXT{$button} . "] ");
+    $about .= <<EOT;
+</TD>
+<TD ALIGN="CENTER">
+$button
+</TD>
+<TD>
+$T2H_BUTTONS_GOTO{$button}
+</TD>
+<TD>
+$T2H_BUTTONS_EXAMPLE{$button}
+</TD>
+</TR>
+EOT
+  }
+
+  $about .= <<EOT;
+</TABLE>
+<P></P>
+where the <STRONG> Example </STRONG> assumes that the current position 
+is at <STRONG> Subsubsection One-Two-Three </STRONG> of a document of 
+the following structure:
+<UL>
+<LI> 1. Section One  </LI>
+<UL>
+<LI>1.1 Subsection One-One</LI>
+<UL>
+<LI> ... </LI>
+</UL>
+<LI>1.2 Subsection One-Two</LI>
+<UL>
+<LI>1.2.1 Subsubsection One-Two-One
+</LI><LI>1.2.2 Subsubsection One-Two-Two
+</LI><LI>1.2.3 Subsubsection One-Two-Three &nbsp; &nbsp; <STRONG>
+&lt;== Current Position </STRONG>
+</LI><LI>1.2.4 Subsubsection One-Two-Four
+</LI></UL>
+<LI>1.3 Subsection One-Three</LI>
+<UL>
+<LI> ... </LI>
+</UL>
+<LI>1.4 Subsection One-Four</LI>
+</UL>
+</UL>
+$T2H_AFTER_ABOUT
+EOT
+  return $about;  
+}
+
+  
+%T2H_BUTTONS_GOTO =
+  (
+   'Top',      'cover (top) of document',
+   'Contents', 'table of contents',
+   'Overview', 'short table of contents',
+   'Index',    'concept index',
+   'Back',     'previous section in reading order',
+   'FastBack', 'previous or up-and-previous section ',
+   'Prev',     'previous section same level',
+   'Up',       'up section',
+   'Next',     'next section same level',
+   'Forward',  'next section in reading order',
+   'FastForward', 'next or up-and-next section',
+   'About' ,    'this page',
+   'First',    'first section in reading order',
+   'Last',     'last section in reading order',
+  );
+
+%T2H_BUTTONS_EXAMPLE = 
+(
+   'Top',      ' &nbsp; ',
+   'Contents', ' &nbsp; ',
+   'Overview', ' &nbsp; ',
+   'Index',    ' &nbsp; ',
+   'Back',     '1.2.2',
+   'FastBack', '1.1',
+   'Prev',     '1.2.2',
+   'Up',       '1.2',
+   'Next',     '1.2.4',
+   'Forward',  '1.2.4',
+   'FastForward', '1.3',
+   'About',     ' &nbsp; ',
+   'First',    '1.',
+   'Last',     '1.2.4',
+);
+
+
+######################################################################
+# from here on, its l2h init stuff 
+#
+
+## initialization for latex2html as for Singular manual generation
+## obachman 3/99
+
+#
+# Options controlling Titles, File-Names, Tracing and Sectioning
+#
+$TITLE = '';
+
+$SHORTEXTN = 0;
+
+$LONG_TITLES = 0;
+
+$DESTDIR = ''; # should be overwritten by cmd-line argument
+
+$NO_SUBDIR = 0;# should be overwritten by cmd-line argument
+
+$PREFIX = '';  # should be overwritten by cmd-line argument
+
+$AUTO_PREFIX = 0; # this is needed, so that prefix settings are used
+
+$AUTO_LINK = 0; 
+
+$SPLIT = 0;
+
+$MAX_LINK_DEPTH = 0;
+
+$TMP = ''; # should be overwritten by cmd-line argument
+
+$DEBUG = 0;
+
+$VERBOSE = 1;
+
+#
+# Options controlling Extensions and Special Features 
+#
+$HTML_VERSION = "3.2";
+
+$TEXDEFS = 1; # we absolutely need that
+
+$EXTERNAL_FILE = '';
+
+$SCALABLE_FONTS = 1;
+
+$NO_SIMPLE_MATH = 1;
+
+$LOCAL_ICONS = 1;
+
+$SHORT_INDEX = 0;
+
+$NO_FOOTNODE = 1;
+
+$ADDRESS = '';
+
+$INFO = '';
+
+#
+# Switches controlling Image Generation 
+#
+$ASCII_MODE = 0;
+
+$NOLATEX = 0;
+
+$EXTERNAL_IMAGES = 0;
+
+$PS_IMAGES = 0;
+
+$NO_IMAGES = 0;
+
+$IMAGES_ONLY = 0;
+
+$REUSE = 2;
+
+$ANTI_ALIAS = 1;
+
+$ANTI_ALIAS_TEXT = 1;
+
+#
+#Switches controlling Navigation Panels
+#
+$NO_NAVIGATION = 1;
+$ADDRESS = '';
+$INFO = 0;              # 0 = do not make a "About this document..." section 
+
+#
+#Switches for Linking to other documents 
+#
+# actuall -- we don't care
+
+$MAX_SPLIT_DEPTH = 0;	# Stop making separate files at this depth
+
+$MAX_LINK_DEPTH = 0;    # Stop showing child nodes at this depth   
+
+$NOLATEX = 0;           # 1 = do not pass unknown environments to Latex
+
+$EXTERNAL_IMAGES = 0;   # 1 = leave the images outside the document 
+
+$ASCII_MODE = 0;        # 1 = do not use any icons or internal images
+
+# 1 =  use links to external postscript images rather than inlined bitmap
+# images.
+$PS_IMAGES = 0;
+$SHOW_SECTION_NUMBERS = 0;
+
+### Other global variables ###############################################
+$CHILDLINE = "";
+
+# This is the line width measured in pixels and it is used to right justify
+# equations and equation arrays; 
+$LINE_WIDTH = 500;		
+
+# Used in conjunction with AUTO_NAVIGATION
+$WORDS_IN_PAGE = 300;	
+
+# Affects ONLY the way accents are processed 
+$default_language = 'english';	
+
+# The value of this variable determines how many words to use in each 
+# title that is added to the navigation panel (see below)
+# 
+$WORDS_IN_NAVIGATION_PANEL_TITLES = 0;
+
+# This number will determine the size of the equations, special characters,
+# and anything which will be converted into an inlined image
+# *except* "image generating environments" such as "figure", "table" 
+# or "minipage".
+# Effective values are those greater than 0.
+# Sensible values are between 0.1 - 4.
+$MATH_SCALE_FACTOR = 1.5;
+
+# This number will determine the size of 
+# image generating environments such as "figure", "table" or "minipage".
+# Effective values are those greater than 0.
+# Sensible values are between 0.1 - 4.
+$FIGURE_SCALE_FACTOR = 1.6;
+
+
+#  If both of the following two variables are set then the "Up" button
+#  of the navigation panel in the first node/page of a converted document
+#  will point to $EXTERNAL_UP_LINK. $EXTERNAL_UP_TITLE should be set
+#  to some text which describes this external link.
+$EXTERNAL_UP_LINK = "";
+$EXTERNAL_UP_TITLE = "";
+
+# If this is set then the resulting HTML will look marginally better if viewed 
+# with Netscape.
+$NETSCAPE_HTML = 1;
+
+# Valid paper sizes are "letter", "legal", "a4","a3","a2" and "a0"
+# Paper sizes has no effect other than in the time it takes to create inlined
+# images and in whether large images can be created at all ie
+#  - larger paper sizes *MAY* help with large image problems 
+#  - smaller paper sizes are quicker to handle
+$PAPERSIZE = "a4";
+
+# Replace "english" with another language in order to tell LaTeX2HTML that you 
+# want some generated section titles (eg "Table of Contents" or "References")
+# to appear in a different language. Currently only "english" and "french"
+# is supported but it is very easy to add your own. See the example in the
+# file "latex2html.config" 
+$TITLES_LANGUAGE = "english";
+
+1;	# This must be the last non-comment line
+
+# End File texi2html.init
+######################################################################
+
+
+require "$ENV{T2H_HOME}/texi2html.init" 
+  if ($0 =~ /\.pl$/ &&
+      -e "$ENV{T2H_HOME}/texi2html.init" && -r "$ENV{T2H_HOME}/texi2html.init");
+
+#+++############################################################################
+#                                                                              #
+# Initialization                                                               #
+# Pasted content of File $(srcdir)/MySimple.pm: Command-line processing        #
+#                                                                              #
+#---############################################################################
+
+# leave this within comments, and keep the require statement
+# This way, you can directly run texi2html.pl, if $ENV{T2H_HOME}/texi2html.init
+# exists.
+
+# 
+package Getopt::MySimple;
+
+# Name:
+#	Getopt::MySimple.
+#
+# Documentation:
+#	POD-style (incomplete) documentation is in file MySimple.pod
+#
+# Tabs:
+#	4 spaces || die.
+#
+# Author:
+#	Ron Savage	rpsavage@ozemail.com.au.
+#	1.00	19-Aug-97	Initial version.
+#	1.10	13-Oct-97	Add arrays of switches (eg '=s@').
+#	1.20	 3-Dec-97	Add 'Help' on a per-switch basis.
+#	1.30	11-Dec-97	Change 'Help' to 'verbose'. Make all hash keys lowercase.
+#	1.40	10-Nov-98	Change width of help report. Restructure tests.
+#               1-Jul-00        Modifications for Texi2html
+
+# --------------------------------------------------------------------------
+# Locally modified by obachman (Display type instead of env, order by cmp)
+# $Id: MySimple.pm,v 1.1 2000/07/03 08:44:13 obachman Exp $
+
+# use strict;
+# no strict 'refs';
+
+use vars qw(@EXPORT @EXPORT_OK @ISA);
+use vars qw($fieldWidth $opt $VERSION);
+
+use Exporter();
+use Getopt::Long;
+
+@ISA		= qw(Exporter);
+@EXPORT		= qw();
+@EXPORT_OK	= qw($opt);	# An alias for $self -> {'opt'}.
+
+# --------------------------------------------------------------------------
+
+$fieldWidth	= 20;
+$VERSION	= '1.41';
+
+# --------------------------------------------------------------------------
+
+sub byOrder
+{
+	my($self) = @_;
+	
+	return uc($a) cmp (uc($b));
+}
+
+# --------------------------------------------------------------------------
+
+sub dumpOptions
+{
+	my($self) = @_;
+
+	print 'Option', ' ' x ($fieldWidth - length('Option') ), "Value\n";
+
+	for (sort byOrder keys(%{$self -> {'opt'} }) )
+	{
+	  print "-$_", ' ' x ($fieldWidth - (1 + length) ), "${$self->{'opt'} }{$_}\n";
+	}
+
+	print "\n";
+
+}	# End of dumpOptions.
+
+# --------------------------------------------------------------------------
+# Return:
+#	0 -> Error.
+#	1 -> Ok.
+
+sub getOptions
+{
+	push(@_, 0) if ($#_ == 2);	# Default for $ignoreCase is 0.
+	push(@_, 1) if ($#_ == 3);	# Default for $helpThenExit is 1.
+
+	my($self, $default, $helpText, $versionText, 
+	   $helpThenExit, $versionThenExit, $ignoreCase) = @_;
+	
+	$helpThenExit = 1 unless (defined($helpThenExit));
+	$versionThenExit = 1 unless (defined($versionThenExit));
+	$ignoreCase = 0 unless (defined($ignoreCase));
+
+	$self -> {'default'}		= $default;
+	$self -> {'helpText'}		= $helpText;
+	$self -> {'versionText'}        = $versionText;
+	$Getopt::Long::ignorecase	= $ignoreCase;
+
+	unless (defined($self -> {'default'}{'help'}))
+	{
+	  $self -> {'default'}{'help'} = 
+	  { 
+	   type => ':i', 
+	   default => '',
+	   linkage => sub {$self->helpOptions($_[1]); exit (0) if $helpThenExit;},
+	   verbose => "print help and exit"
+	  };
+	}
+
+	unless (defined($self -> {'default'}{'version'}))
+	{
+	  $self -> {'default'}{'version'} = 
+	  { 
+	   type => '', 
+	   default => '',
+	   linkage => sub {print $self->{'versionText'};  exit (0) if versionTheExit;},
+	   verbose => "print version and exit"
+	  };
+	}
+
+	for (keys(%{$self -> {'default'} }) )
+	{
+	  my $type = ${$self -> {'default'} }{$_}{'type'};
+	  push(@{$self -> {'type'} }, "$_$type");
+	  $self->{'opt'}->{$_} =  ${$self -> {'default'} }{$_}{'linkage'}
+            if ${$self -> {'default'} }{$_}{'linkage'};
+	}
+
+	my($result) = &GetOptions($self -> {'opt'}, @{$self -> {'type'} });
+
+        return $result unless $result;
+
+	for (keys(%{$self -> {'default'} }) )
+	{
+ 	   if (! defined(${$self -> {'opt'} }{$_})) #{
+            {
+ 	     ${$self -> {'opt'} }{$_} = ${$self -> {'default'} }{$_}{'default'};
+            }
+	}
+
+	$result;
+}	# End of getOptions.
+
+# --------------------------------------------------------------------------
+
+sub helpOptions
+{
+	my($self) = shift;
+	my($noHelp) = shift;
+	$noHelp = 0 unless $noHelp;
+	my($optwidth, $typewidth, $defaultwidth, $maxlinewidth, $valind, $valwidth) 
+	  = (10, 5, 9, 78, 4, 11);
+
+	print "$self->{'helpText'}" if ($self -> {'helpText'});
+
+	print ' Option', ' ' x ($optwidth - length('Option') -1 ),
+		'Type', ' ' x ($typewidth - length('Type') + 1),
+		'Default', ' ' x ($defaultwidth - length('Default') ),
+	        "Description\n";
+
+	for (sort byOrder keys(%{$self -> {'default'} }) )
+	{
+	  my($line, $help, $option, $val);
+	  $option = $_;
+	  next if ${$self->{'default'} }{$_}{'noHelp'} && ${$self->{'default'} }{$_}{'noHelp'} > $noHelp;
+		$line = " -$_ " . ' ' x ($optwidth - (2 + length) ) .
+			"${$self->{'default'} }{$_}{'type'} ".
+			' ' x ($typewidth - (1+length(${$self -> {'default'} }{$_}{'type'}) ));
+
+                 $val = ${$self->{'default'} }{$_}{'linkage'};
+                if ($val)
+                {
+                  if (ref($val) eq 'SCALAR')
+		  {
+		    $val = $$val; 
+		  }
+		  else
+		  {
+		    $val = '';
+		  }
+                }
+		else
+		{
+		  $val = ${$self->{'default'} }{$_}{'default'};
+		}
+	        $line .= "$val  ";
+		$line .= ' ' x ($optwidth + $typewidth + $defaultwidth + 1 - length($line));
+		
+		if (defined(${$self -> {'default'} }{$_}{'verbose'}) &&
+		  ${$self -> {'default'} }{$_}{'verbose'} ne '')
+	      {
+		$help = "${$self->{'default'} }{$_}{'verbose'}";
+	      }
+	      else
+	      {
+		$help = ' ';
+	      }
+	      if ((length("$line") + length($help)) < $maxlinewidth)
+	      {
+		print $line , $help, "\n";
+	      }
+	      else
+	      {
+		print $line, "\n", ' ' x $valind, $help, "\n";
+	      }
+	      for $val (sort byOrder keys(%{${$self->{'default'}}{$option}{'values'}}))
+	      {
+	        print ' ' x ($valind + 2);
+	        print $val, '  ', ' ' x ($valwidth - length($val) - 2);
+	        print ${$self->{'default'}}{$option}{'values'}{$val}, "\n";
+	      }
+	}
+
+	print <<EOT;
+Note: 'Options' may be abbreviated. 'Type' specifications mean:
+ <none>| !    no argument: variable is set to 1 on -foo (or, to 0 on -nofoo)
+    =s | :s   mandatory (or, optional)  string argument
+    =i | :i   mandatory (or, optional)  integer argument
+EOT
+}	# End of helpOptions.
+
+#-------------------------------------------------------------------
+
+sub new
+{
+	my($class)				= @_;
+	my($self)				= {};
+	$self -> {'default'}	= {};
+	$self -> {'helpText'}	= '';
+	$self -> {'opt'}		= {};
+	$opt					= $self -> {'opt'};	 # An alias for $self -> {'opt'}.
+	$self -> {'type'}		= ();
+
+	return bless $self, $class;
+
+}	# End of new.
+
+# --------------------------------------------------------------------------
+
+1;
+
+# End MySimple.pm
+
+require "$ENV{T2H_HOME}/MySimple.pm" 
+  if ($0 =~ /\.pl$/ &&
+      -e "$ENV{T2H_HOME}/texi2html.init" && -r "$ENV{T2H_HOME}/texi2html.init");
+
+package main;
+
+#+++############################################################################
+#                                                                              #
+# Constants                                                                    #
+#                                                                              #
+#---############################################################################
+
+$DEBUG_TOC   =  1;
+$DEBUG_INDEX =  2;
+$DEBUG_BIB   =  4;
+$DEBUG_GLOSS =  8;
+$DEBUG_DEF   = 16;
+$DEBUG_HTML  = 32;
+$DEBUG_USER  = 64;
+$DEBUG_L2H   = 128;
+
+
+$BIBRE = '\[[\w\/-]+\]';		# RE for a bibliography reference
+$FILERE = '[\/\w.+-]+';			# RE for a file name
+$VARRE = '[^\s\{\}]+';			# RE for a variable name
+$NODERE = '[^,:]+';		        # RE for a node name
+$NODESRE = '[^:]+';		        # RE for a list of node names
+
+$ERROR = "***";			        # prefix for errors 
+$WARN  = "**";                          # prefix for warnings
+  
+                                        # program home page
+$PROTECTTAG = "_ThisIsProtected_";	# tag to recognize protected sections
+
+$CHAPTEREND = "<!-- End chapter -->\n"; # to know where a chpater ends
+$SECTIONEND = "<!-- End section -->\n"; # to know where section ends
+$TOPEND     = "<!-- End top     -->\n"; # to know where top ends
+
+  
+
+#
+# pre-defined indices
+#
+$index_properties =
+{
+ 'c' => { name => 'cp'},
+ 'f' => { name => 'fn', code => 1},
+ 'v' => { name => 'vr', code => 1},
+ 'k' => { name => 'ky', code => 1},
+ 'p' => { name => 'pg', code => 1},
+ 't' => { name => 'tp', code => 1}
+};
+
+
+%predefined_index = (
+		    'cp', 'c',
+		    'fn', 'f',
+		    'vr', 'v',
+		    'ky', 'k',
+		    'pg', 'p',
+		    'tp', 't',
+	            );
+
+#
+# valid indices
+#
+%valid_index = (
+		    'c', 1,
+		    'f', 1,
+		    'v', 1,
+		    'k', 1,
+		    'p', 1,
+		    't', 1,
+		);
+
+#
+# texinfo section names to level
+#
+%sec2level = (
+	      'top', 0,
+	      'chapter', 1,
+	      'unnumbered', 1,
+	      'majorheading', 1,
+	      'chapheading', 1,
+	      'appendix', 1,
+	      'section', 2,
+	      'unnumberedsec', 2,
+	      'heading', 2,
+	      'appendixsec', 2,
+	      'appendixsection', 2,
+	      'subsection', 3,
+	      'unnumberedsubsec', 3,
+	      'subheading', 3,
+	      'appendixsubsec', 3,
+	      'subsubsection', 4,
+	      'unnumberedsubsubsec', 4,
+	      'subsubheading', 4,
+	      'appendixsubsubsec', 4,
+	      );
+
+#
+# accent map, TeX command to ISO name
+#
+%accent_map = (
+	       '"',  'uml',
+	       '~',  'tilde',
+	       '^',  'circ',
+	       '`',  'grave',
+	       '\'', 'acute',
+	       );
+
+#
+# texinfo "simple things" (@foo) to HTML ones
+#
+%simple_map = (
+	       # cf. makeinfo.c
+	       "*", "<BR>",		# HTML+
+	       " ", " ",
+	       "\t", " ",
+  	       "-", "&#173;",	# soft hyphen
+	       "\n", "\n",
+	       "|", "",
+	       'tab', '<\/TD><TD>',
+	       # spacing commands
+	       ":", "",
+	       "!", "!",
+	       "?", "?",
+	       ".", ".",
+	       "-", "",
+	       );
+
+#
+# texinfo "things" (@foo{}) to HTML ones
+#
+%things_map = (
+	       'TeX', 'TeX',
+	       'br', '<P>',		# paragraph break
+	       'bullet', '*',
+	       'copyright', '(C)',
+	       'dots', '<small>...<\/small>',
+	       'enddots', '<small>....<\/small>',
+	       'equiv', '==',
+	       'error', 'error-->',
+	       'expansion', '==>',
+	       'minus', '-',
+	       'point', '-!-',
+	       'print', '-|',
+	       'result', '=>',
+	       'today', $T2H_TODAY,
+	       'aa', '&aring;',
+	       'AA', '&Aring;',
+	       'ae', '&aelig;',
+	       'oe', '&#156;',
+	       'AE', '&AElig;',
+	       'OE', '&#140;',
+	       'o',  '&oslash;',
+	       'O',  '&Oslash;',
+	       'ss', '&szlig;',
+	       'l', '\/l',
+	       'L', '\/L',
+	       'exclamdown', '&iexcl;',
+	       'questiondown', '&iquest;',
+	       'pounds', '&pound;'
+	       );
+
+#
+# texinfo styles (@foo{bar}) to HTML ones
+#
+%style_map = (
+	      'acronym', '&do_acronym',
+	      'asis', '',
+	      'b', 'B',
+	      'cite', 'CITE',
+	      'code', 'CODE',
+	      'command', 'CODE',
+	      'ctrl', '&do_ctrl',	# special case
+	      'dfn', 'EM',		# DFN tag is illegal in the standard
+	      'dmn', '',		# useless
+	      'email', '&do_email',     # insert a clickable email address
+	      'emph', 'EM',
+	      'env', 'CODE',
+	      'file', '"TT',		# will put quotes, cf. &apply_style
+	      'i', 'I',
+	      'kbd', 'KBD',
+	      'key', 'KBD',
+	      'math', '&do_math',
+	      'option', '"SAMP',        # will put quotes, cf. &apply_style
+	      'r', '',			# unsupported
+	      'samp', '"SAMP',		# will put quotes, cf. &apply_style
+	      'sc', '&do_sc',		# special case
+	      'strong', 'STRONG',
+	      't', 'TT',
+	      'titlefont', '',		# useless
+	      'uref', '&do_uref',       # insert a clickable URL
+	      'url', '&do_url',         # insert a clickable URL
+	      'var', 'VAR',
+	      'w', '',			# unsupported
+	      'H', '&do_accent',
+	      'dotaccent', '&do_accent',
+	      'ringaccent','&do_accent',
+	      'tieaccent', '&do_accent',
+	      'u','&do_accent',
+	      'ubaraccent','&do_accent',
+	      'udotaccent','&do_accent',
+	      'v', '&do_accent',
+	      ',', '&do_accent',
+	      'dotless', '&do_accent'
+	      );
+
+#
+# texinfo format (@foo/@end foo) to HTML ones
+#
+%format_map = (
+	       'quotation', 'BLOCKQUOTE',
+	       # lists
+	       'itemize', 'UL',
+	       'enumerate', 'OL',
+	       # poorly supported
+	       'flushleft', 'PRE',
+	       'flushright', 'PRE',
+	       );
+
+#
+# an eval of these $complex_format_map->{what}->[0] yields beginning
+# an eval of these $complex_format_map->{what}->[1] yieleds end
+$complex_format_map =
+{
+ example => 
+ [
+  q{"<TABLE><tr>$T2H_EXAMPLE_INDENT_CELL<td class=example><pre>"},
+  q{'</pre></td></tr></table>'}
+ ],
+ smallexample => 
+ [
+  q{"<TABLE><tr>$T2H_SMALL_EXAMPLE_INDENT_CELL<td class=smallexample><FONT SIZE=$T2H_SMALL_FONT_SIZE><pre>"},
+  q{'</FONT></pre></td></tr></table>'}
+ ],
+ display =>
+ [
+  q{"<TABLE><tr>$T2H_EXAMPLE_INDENT_CELL<td class=display><pre " . 'style="font-family: serif">'},
+  q{'</pre></td></tr></table>'}
+ ],
+ smalldisplay =>
+ [
+  q{"<TABLE><tr>$T2H_SMALL_EXAMPLE_INDENT_CELL<td class=smalldisplay><FONT SIZE=$T2H_SMALL_FONT_SIZE><pre " . 'style="font-family: serif">'},
+  q{'</pre></FONT></td></tr></table>'}
+ ]
+};
+
+$complex_format_map->{lisp} = $complex_format_map->{example};
+$complex_format_map->{smalllisp} = $complex_format_map->{smallexample};
+$complex_format_map->{format} = $complex_format_map->{display};
+$complex_format_map->{smallformat} = $complex_format_map->{smalldisplay};
+
+#
+# texinfo definition shortcuts to real ones
+#
+%def_map = (
+	    # basic commands
+	    'deffn', 0,
+	    'defvr', 0,
+	    'deftypefn', 0,
+	    'deftypevr', 0,
+	    'defcv', 0,
+	    'defop', 0,
+	    'deftp', 0,
+	    # basic x commands
+	    'deffnx', 0,
+	    'defvrx', 0,
+	    'deftypefnx', 0,
+	    'deftypevrx', 0,
+	    'defcvx', 0,
+	    'defopx', 0,
+	    'deftpx', 0,
+	    # shortcuts
+	    'defun', 'deffn Function',
+	    'defmac', 'deffn Macro',
+	    'defspec', 'deffn {Special Form}',
+	    'defvar', 'defvr Variable',
+	    'defopt', 'defvr {User Option}',
+	    'deftypefun', 'deftypefn Function',
+	    'deftypevar', 'deftypevr Variable',
+	    'defivar', 'defcv {Instance Variable}',
+	    'deftypeivar', 'defcv {Instance Variable}', # NEW: FIXME
+	    'defmethod', 'defop Method',
+	    'deftypemethod', 'defop Method', # NEW:FIXME
+	    # x shortcuts
+	    'defunx', 'deffnx Function',
+	    'defmacx', 'deffnx Macro',
+	    'defspecx', 'deffnx {Special Form}',
+	    'defvarx', 'defvrx Variable',
+	    'defoptx', 'defvrx {User Option}',
+	    'deftypefunx', 'deftypefnx Function',
+	    'deftypevarx', 'deftypevrx Variable',
+	    'defivarx', 'defcvx {Instance Variable}',
+	    'defmethodx', 'defopx Method',
+	    );
+
+#
+# things to skip
+#
+%to_skip = (
+	    # comments
+	    'c', 1,
+	    'comment', 1,
+            'ifnotinfo', 1,
+            'ifnottex', 1,
+	    'ifhtml', 1,
+	    'end ifhtml', 1,
+            'end ifnotinfo', 1,
+            'end ifnottex', 1,
+	    # useless
+	    'detailmenu', 1,
+            'direntry', 1,
+	    'contents', 1,
+	    'shortcontents', 1,
+	    'summarycontents', 1,
+	    'footnotestyle', 1,
+	    'end ifclear', 1,
+	    'end ifset', 1,
+	    'titlepage', 1,
+	    'end titlepage', 1,
+	    # unsupported commands (formatting)
+	    'afourpaper', 1,
+	    'cropmarks', 1,
+	    'finalout', 1,
+	    'headings', 1,
+            'sp', 1,
+	    'need', 1,
+	    'page', 1,
+	    'setchapternewpage', 1,
+	    'everyheading', 1,
+	    'everyfooting', 1,
+	    'evenheading', 1,
+	    'evenfooting', 1,
+	    'oddheading', 1,
+	    'oddfooting', 1,
+	    'smallbook', 1,
+	    'vskip', 1,
+	    'filbreak', 1,
+	    'paragraphindent', 1,
+	    # unsupported formats
+	    'cartouche', 1,
+	    'end cartouche', 1,
+	    'group', 1,
+	    'end group', 1,
+	    );
+
+#+++############################################################################
+#                                                                              #
+# Argument parsing, initialisation                                             #
+#                                                                              #
+#---############################################################################
+
+#
+# flush stdout and stderr after every write
+#
+select(STDERR);
+$| = 1;
+select(STDOUT);
+$| = 1;
+
+
+%value = ();				# hold texinfo variables, see also -D
+$use_bibliography = 1;
+$use_acc = 1;
+
+#
+# called on -init-file
+sub LoadInitFile
+{
+  my $init_file = shift;
+  # second argument is value of options
+  $init_file = shift;
+  if (-f $init_file)
+  {
+    print "# reading initialization file from $init_file\n" 
+      if ($T2H_VERBOSE);
+    require($init_file);
+  }
+  else
+  {
+    print "$ERROR Error: can't read init file $int_file\n";
+    $init_file = '';
+  }
+}
+
+#
+# called on -lang
+sub SetDocumentLanguage
+{
+  my $lang = shift;
+  if (! exists($T2H_WORDS->{$lang}))
+  {
+    warn "$ERROR: Language specs for '$lang' do not exists. Reverting to '" . 
+      ($T2H_LANG ? T2H_LANG : "en") . "'\n";
+  }
+  else
+  {
+    print "# using '$lang' as document language\n" if ($T2H_VERBOSE);
+    $T2H_LANG = $lang;
+  }
+}
+
+##
+## obsolete cmd line options
+##
+$T2H_OBSOLETE_OPTIONS -> {'no-section_navigation'} =
+{
+ type => '!',
+ linkage => sub {$main::T2H_SECTION_NAVIGATION = 0;},
+ verbose => 'obsolete, use -nosec_nav',
+ noHelp => 2,
+};
+$T2H_OBSOLETE_OPTIONS -> {use_acc} =
+{
+ type => '!',
+ linkage => \$use_acc,
+ verbose => 'obsolete',
+ noHelp => 2
+};
+$T2H_OBSOLETE_OPTIONS -> {expandinfo} =
+{
+ type => '!',
+ linkage => sub {$main::T2H_EXPAND = 'info';},
+ verbose => 'obsolete, use "-expand info" instead',
+ noHelp => 2,
+};
+$T2H_OBSOLETE_OPTIONS -> {expandtex} =
+{
+ type => '!',
+ linkage => sub {$main::T2H_EXPAND = 'tex';},
+ verbose => 'obsolete, use "-expand tex" instead',
+ noHelp => 2,
+};
+$T2H_OBSOLETE_OPTIONS -> {monolithic} =
+{
+ type => '!',
+ linkage => sub {$main::T2H_SPLIT = '';},
+ verbose => 'obsolete, use "-split no" instead',
+ noHelp => 2
+};
+$T2H_OBSOLETE_OPTIONS -> {split_node} =
+{
+ type => '!',
+ linkage => sub{$main::T2H_SPLIT = 'section';},
+ verbose => 'obsolete, use "-split section" instead',
+ noHelp => 2,
+};
+$T2H_OBSOLETE_OPTIONS -> {split_chapter} =
+{
+ type => '!',
+ linkage => sub{$main::T2H_SPLIT = 'chapter';},
+ verbose => 'obsolete, use "-split chapter" instead',
+ noHelp => 2,
+};
+$T2H_OBSOLETE_OPTIONS -> {no_verbose} =
+{
+ type => '!',
+ linkage => sub {$main::T2H_VERBOSE = 0;},
+ verbose => 'obsolete, use -noverbose instead',
+ noHelp => 2,
+};
+$T2H_OBSOLETE_OPTIONS -> {output_file} =
+{
+ type => '=s',
+ linkage => sub {$main::T2H_OUT = @_[1]; $T2H_SPLIT = '';},
+ verbose => 'obsolete, use -out_file instead',
+ noHelp => 2
+};
+
+$T2H_OBSOLETE_OPTIONS -> {section_navigation} =
+{
+ type => '!',
+ linkage => \$T2H_SECTION_NAVIGATION,
+ verbose => 'obsolete, use -sec_nav instead',
+ noHelp => 2,
+};
+
+$T2H_OBSOLETE_OPTIONS -> {verbose} =
+{
+ type => '!',
+ linkage => \$T2H_VERBOSE,
+ verbose => 'obsolete, use -Verbose instead',
+ noHelp => 2
+};
+
+# read initialzation from $sysconfdir/texi2htmlrc or $HOME/.texi2htmlrc
+my $home = $ENV{HOME};
+defined($home) or $home = '';
+foreach $i ('/usr/local/etc/texi2htmlrc', "$home/.texi2htmlrc") {
+    if (-f $i) {
+	print "# reading initialization file from $i\n" 
+	    if ($T2H_VERBOSE);
+	require($i);
+    }
+}
+
+
+#+++############################################################################
+#                                                                              #
+# parse command-line options
+#                                                                              #
+#---############################################################################
+$T2H_USAGE_TEXT = <<EOT;
+Usage: texi2html  [OPTIONS] TEXINFO-FILE
+Translates Texinfo source documentation to HTML.
+EOT
+$T2H_FAILURE_TEXT = <<EOT;
+Try 'texi2html -help' for usage instructions.
+EOT
+$options = new Getopt::MySimple;
+
+# some older version of GetOpt::Long don't have 
+# Getopt::Long::Configure("pass_through")
+eval {Getopt::Long::Configure("pass_through");};
+$Configure_failed = $@ && <<EOT;
+**WARNING: Parsing of obsolete command-line options could have failed. 
+           Consider to use only documented command-line options (run
+           'texi2html -help 2' for a complete list) or upgrade to perl 
+           version 5.005 or higher.
+EOT
+
+if (! $options->getOptions($T2H_OPTIONS, $T2H_USAGE_TEXT, "$THISVERSION\n"))
+{
+  print $Configure_failed if $Configure_failed;
+  die $T2H_FAILURE_TEXT;
+}
+
+if (@ARGV > 1)
+{
+  eval {Getopt::Long::Configure("no_pass_through");};
+  if (! $options->getOptions($T2H_OBSOLETE_OPTIONS, $T2H_USAGE_TEXT, "$THISVERSION\n"))
+  {
+    print $Configure_failed if $Configure_failed;
+    die $T2H_FAILURE_TEXT;
+  }
+}
+
+if ($T2H_CHECK) {
+    die "Need file to check\n$T2H_FAILURE_TEXT" unless @ARGV > 0;
+    &check;
+    exit;
+}
+
+#+++############################################################################
+#                                                                              #
+# evaluation of cmd line options
+#                                                                              #
+#---############################################################################
+
+if ($T2H_EXPAND eq 'info') 
+{
+  $to_skip{'ifinfo'} = 1;
+  $to_skip{'end ifinfo'} = 1;
+} 
+elsif ($T2H_EXPAND eq 'tex')
+{
+  $to_skip{'iftex'} = 1;
+  $to_skip{'end iftex'} = 1;
+  
+}
+
+$T2H_INVISIBLE_MARK = '<IMG SRC="invisible.xbm">' if $T2H_INVISIBLE_MARK eq 'xbm';
+
+#
+# file name buisness
+#
+die "Need exactly one file to translate\n$T2H_FAILURE_TEXT" unless @ARGV == 1;
+$docu = shift(@ARGV);
+if ($docu =~ /.*\//) {
+    chop($docu_dir = $&);
+    $docu_name = $';
+} else {
+    $docu_dir = '.';
+    $docu_name = $docu;
+}
+unshift(@T2H_INCLUDE_DIRS, $docu_dir);
+$docu_name =~ s/\.te?x(i|info)?$//;	# basename of the document
+$docu_name = $T2H_PREFIX if ($T2H_PREFIX);
+
+# subdir
+if ($T2H_SUBDIR && ! $T2H_OUT)
+{
+  $T2H_SUBDIR =~ s|/*$||;
+  unless (-d "$T2H_SUBDIR" && -w "$T2H_SUBDIR")
+  {
+    if ( mkdir($T2H_SUBDIR, oct(755)))
+    {
+      print "# created directory $T2H_SUBDIR\n" if ($T2H_VERBOSE);
+    }
+    else
+    {
+      warn "$ERROR can't create directory $T2H_SUBDIR. Put results into current directory\n";
+      $T2H_SUBDIR = '';
+    }
+  }
+}
+
+if ($T2H_SUBDIR && ! $T2H_OUT)
+{
+  $docu_rdir = "$T2H_SUBDIR/";
+  print "# putting result files into directory $docu_rdir\n" if ($T2H_VERBOSE);
+}
+else
+{
+  if ($T2H_OUT && $T2H_OUT =~ m|(.*)/|)
+  {
+    $docu_rdir = "$1/";
+    print "# putting result files into directory $docu_rdir\n" if ($T2H_VERBOSE);
+  }
+  else
+  {
+    print "# putting result files into current directory \n" if ($T2H_VERBOSE);
+    $docu_rdir = '';
+  }
+}
+
+# extension
+if ($T2H_SHORTEXTN)
+{
+  $docu_ext = "htm";
+}
+else
+{
+  $docu_ext = "html";
+}
+if ($T2H_TOP_FILE =~ /\..*$/)
+{
+  $T2H_TOP_FILE = $`.".$docu_ext";
+}
+
+# result files
+if (! $T2H_OUT && ($T2H_SPLIT =~ /section/i || $T2H_SPLIT =~ /node/i))
+{
+  $T2H_SPLIT = 'section';
+}
+elsif (! $T2H_OUT && $T2H_SPLIT =~ /chapter/i)
+{
+  $T2H_SPLIT = 'chapter'
+}
+else
+{
+  undef $T2H_SPLIT;
+}
+
+$docu_doc = "$docu_name.$docu_ext";		# document's contents
+$docu_doc_file = "$docu_rdir$docu_doc";
+if ($T2H_SPLIT) 
+{
+  $docu_toc  = $T2H_TOC_FILE || "${docu_name}_toc.$docu_ext"; # document's table of contents
+  $docu_stoc = "${docu_name}_ovr.$docu_ext"; # document's short toc
+  $docu_foot = "${docu_name}_fot.$docu_ext"; # document's footnotes
+  $docu_about = "${docu_name}_abt.$docu_ext"; # about this document
+  $docu_top  = $T2H_TOP_FILE || $docu_doc;
+}
+else
+{
+  if ($T2H_OUT)
+  {
+    $docu_doc = $T2H_OUT;
+    $docu_doc =~ s|.*/||;
+  }
+  $docu_toc = $docu_foot = $docu_stoc = $docu_about = $docu_top = $docu_doc;
+}
+
+$docu_toc_file  = "$docu_rdir$docu_toc";
+$docu_stoc_file = "$docu_rdir$docu_stoc";
+$docu_foot_file = "$docu_rdir$docu_foot";
+$docu_about_file = "$docu_rdir$docu_about";
+$docu_top_file  = "$docu_rdir$docu_top";
+
+$docu_frame_file =     "$docu_rdir${docu_name}_frame.$docu_ext";
+$docu_toc_frame_file = "$docu_rdir${docu_name}_toc_frame.$docu_ext";
+
+#
+# variables
+#
+$value{'html'} = 1;			# predefine html (the output format)
+$value{'texi2html'} = $THISVERSION;	# predefine texi2html (the translator)
+# _foo: internal to track @foo
+foreach ('_author', '_title', '_subtitle',
+	 '_settitle', '_setfilename', '_shorttitle') {
+    $value{$_} = '';		        # prevent -w warnings
+}
+%node2sec = ();				# node to section name
+%sec2node = ();				# section to node name
+%sec2number = ();                       # section to number
+%number2sec = ();                       # number to section 
+%idx2node = ();                         # index keys to node
+%node2href = ();			# node to HREF
+%node2next = ();			# node to next
+%node2prev = ();			# node to prev
+%node2up   = ();			# node to up
+%bib2href = ();				# bibliography reference to HREF
+%gloss2href = ();			# glossary term to HREF
+@sections = ();				# list of sections
+%tag2pro = ();				# protected sections
+
+#
+# initial indexes
+#
+$bib_num = 0;
+$foot_num = 0;
+$gloss_num = 0;
+$idx_num = 0;
+$sec_num = 0;
+$doc_num = 0;
+$html_num = 0;
+
+#
+# can I use ISO8879 characters? (HTML+)
+#
+if ($T2H_USE_ISO) {
+    $things_map{'bullet'} = "&bull;";
+    $things_map{'copyright'} = "&copy;";
+    $things_map{'dots'} = "&hellip;";
+    $things_map{'equiv'} = "&equiv;";
+    $things_map{'expansion'} = "&rarr;";
+    $things_map{'point'} = "&lowast;";
+    $things_map{'result'} = "&rArr;";
+}
+
+#
+# read texi2html extensions (if any)
+#
+$extensions = 'texi2html.ext'; # extensions in working directory
+if (-f $extensions) {
+    print "# reading extensions from $extensions\n" if $T2H_VERBOSE;
+    require($extensions);
+}
+($progdir = $0) =~ s/[^\/]+$//;
+if ($progdir && ($progdir ne './')) {
+    $extensions = "${progdir}texi2html.ext"; # extensions in texi2html directory
+    if (-f $extensions) {
+	print "# reading extensions from $extensions\n" if $T2H_VERBOSE;
+	require($extensions);
+    }
+}
+
+
+print "# reading from $docu\n" if $T2H_VERBOSE;
+
+#########################################################################
+#
+# latex2html stuff
+# 
+# latex2html conversions consist of three stages:
+# 1) ToLatex: Put "latex" code into a latex file
+# 2) ToHtml: Use latex2html to generate corresponding html code and images
+# 3) FromHtml: Extract generated code and images from latex2html run
+#
+
+##########################
+# default settings
+#
+
+# defaults for files and names
+
+sub l2h_Init 
+{
+  local($root) = @_;
+  
+  return 0 unless ($root);
+  
+  $l2h_name =  "${root}_l2h";
+  
+  $l2h_latex_file = "$docu_rdir${l2h_name}.tex";
+  $l2h_cache_file = "${docu_rdir}l2h_cache.pm";
+  $T2H_L2H_L2H = "latex2html" unless ($T2H_L2H_L2H);
+  
+  # destination dir -- generated images are put there, should be the same
+  # as dir of enclosing html document -- 
+  $l2h_html_file = "$docu_rdir${l2h_name}.html";
+  $l2h_prefix = "${l2h_name}_";
+  return 1;
+}
+
+
+##########################
+# 
+# First stage: Generation of Latex file
+# Initialize with: l2h_InitToLatex
+# Add content with: l2h_ToLatex($text) --> HTML placeholder comment
+# Finish with: l2h_FinishToLatex
+# 
+
+$l2h_latex_preample = <<EOT;
+% This document was automatically generated by the l2h extenstion of texi2html
+% DO NOT EDIT !!!
+\\documentclass{article}
+\\usepackage{html}
+\\begin{document}
+EOT
+
+$l2h_latex_closing = <<EOT;
+\\end{document}
+EOT
+
+# return used latex 1, if l2h could be initalized properly, 0 otherwise
+sub l2h_InitToLatex
+{
+  %l2h_to_latex = ();
+  unless ($T2H_L2H_SKIP)
+  {
+    unless (open(L2H_LATEX, ">$l2h_latex_file"))
+    {
+      warn "$ERROR Error l2h: Can't open latex file '$latex_file' for writing\n";
+      return 0;
+    }  
+    print "# l2h: use ${l2h_latex_file} as latex file\n" if ($T2H_VERBOSE);
+    print L2H_LATEX $l2h_latex_preample;
+  }
+  # open database for caching
+  l2h_InitCache();
+  $l2h_latex_count = 0;
+  $l2h_to_latex_count = 0;
+  $l2h_cached_count = 0;
+  return  1;
+}
+
+# print text (1st arg) into latex file (if not already there), return
+# HTML commentary which can be later on replaced by the latex2html
+# generated text
+sub l2h_ToLatex
+{
+  my($text) = @_;
+  my($count);
+  
+  $l2h_to_latex_count++;
+  $text =~ s/(\s*)$//;
+  
+  # try whether we can cache it
+  my $cached_text = l2h_FromCache($text);
+  if ($cached_text)
+  {
+    $l2h_cached_count++;
+    return $cached_text;
+  }
+  
+  # try whether we have text already on things to do
+  unless ($count = $l2h_to_latex{$text})
+  {
+    $count = $l2h_latex_count;
+    $l2h_latex_count++;
+    $l2h_to_latex{$text} = $count;
+    $l2h_to_latex[$count] = $text;
+    unless ($T2H_L2H_SKIP)
+    {
+      print L2H_LATEX "\\begin{rawhtml}\n";
+      print L2H_LATEX "<!-- l2h_begin ${l2h_name} ${count} -->\n";
+      print L2H_LATEX "\\end{rawhtml}\n";
+      
+      print L2H_LATEX "$text\n";
+      
+      print L2H_LATEX "\\begin{rawhtml}\n";
+      print L2H_LATEX "<!-- l2h_end ${l2h_name} ${count} -->\n";
+      print L2H_LATEX "\\end{rawhtml}\n";
+    }
+  }
+  return "<!-- l2h_replace ${l2h_name} ${count} -->"; 
+}
+
+# print closing into latex file and close it
+sub l2h_FinishToLatex
+{
+  local ($reused);
+  
+  $reused = $l2h_to_latex_count - $l2h_latex_count - $l2h_cached_count;
+  unless ($T2H_L2H_SKIP)
+  {
+    print L2H_LATEX $l2h_latex_closing;
+    close(L2H_LATEX);
+  }
+  print "# l2h: finished to latex ($l2h_cached_count cached, $reused reused, $l2h_latex_count contents)\n" if ($T2H_VERBOSE);
+  unless ($l2h_latex_count)
+  {
+    l2h_Finish();
+    return 0;
+  }
+  return 1;
+}
+
+###################################
+# Second stage: Use latex2html to generate corresponding html code and images
+#
+# l2h_ToHtml([$l2h_latex_file, [$l2h_html_dir]]):
+#   Call latex2html on $l2h_latex_file
+#   Put images (prefixed with $l2h_name."_") and html file(s) in $l2h_html_dir
+#   Return 1, on success
+#          0, otherwise
+#
+sub l2h_ToHtml
+{
+  local($call, $ext, $root, $dotbug);
+  
+  if ($T2H_L2H_SKIP)
+  {
+    print "# l2h: skipping latex2html run\n" if ($T2H_VERBOSE);
+    return 1;
+  }
+  
+  # Check for dot in directory where dvips will work
+  if ($T2H_L2H_TMP)
+  {
+    if ($T2H_L2H_TMP =~ /\./)
+    {
+      warn "$ERROR Warning l2h: l2h_tmp dir contains a dot. Use /tmp, instead\n";
+      $dotbug = 1;
+    }
+  }
+  else
+  {
+    if (&getcwd =~ /\./)
+    {
+     warn "$ERROR Warning l2h: current dir contains a dot. Use /tmp as l2h_tmp dir \n";
+     $dotbug = 1;
+   }
+  }
+  # fix it, if necessary and hope that it works 
+  $T2H_L2H_TMP = "/tmp" if ($dotbug);
+    
+  $call = $T2H_L2H_L2H;
+  # use init file, if specified
+  $call = $call . " -init_file " . $init_file if ($init_file && -f $init_file);
+  # set output dir
+  $call .=  ($docu_rdir ? " -dir $docu_rdir" : " -no_subdir");
+  # use l2h_tmp, if specified
+  $call = $call . " -tmp $T2H_L2H_TMP" if ($T2H_L2H_TMP);
+  # options we want to be sure of
+  $call = $call ." -address 0 -info 0 -split 0 -no_navigation -no_auto_link";
+  $call = $call ." -prefix ${l2h_prefix} $l2h_latex_file"; 
+
+  print "# l2h: executing '$call'\n" if ($T2H_VERBOSE);
+  if (system($call))
+  {
+    warn "l2h ***Error: '${call}' did not succeed\n";
+    return 0;
+  }
+  else
+  {
+    print "# l2h: latex2html finished successfully\n" if ($T2H_VERBOSE);
+    return 1;
+  }
+}
+
+# this is directly pasted over from latex2html
+sub getcwd {
+    local($_) = `pwd`;
+
+    die "'pwd' failed (out of memory?)\n"
+	unless length;
+    chop;
+    $_;
+}
+
+
+##########################
+# Third stage: Extract generated contents from latex2html run
+# Initialize with: l2h_InitFromHtml
+#   open $l2h_html_file for reading
+#   reads in contents into array indexed by numbers
+#   return 1,  on success -- 0, otherwise
+# Extract Html code with: l2h_FromHtml($text)
+#   replaces in $text all previosuly inserted comments by generated html code
+#   returns (possibly changed) $text
+# Finish with: l2h_FinishFromHtml
+#   closes $l2h_html_dir/$l2h_name.".$docu_ext" 
+
+sub l2h_InitFromHtml
+{
+  local($h_line, $h_content, $count, %l2h_img);
+
+  if (! open(L2H_HTML, "<${l2h_html_file}"))
+  {
+    print "$ERROR Error l2h: Can't open ${l2h_html_file} for reading\n";
+    return 0;
+  }
+  print "# l2h: use ${l2h_html_file} as html file\n" if ($T2H_VERBOSE);
+
+  $l2h_html_count = 0;
+  
+  while ($h_line = <L2H_HTML>)
+  {
+    if ($h_line =~ /^<!-- l2h_begin $l2h_name ([0-9]+) -->/)
+    {
+      $count = $1;
+      $h_content = "";
+      while ($h_line = <L2H_HTML>)
+      {
+	if ($h_line =~ /^<!-- l2h_end $l2h_name $count -->/)
+	{
+	  chomp $h_content;
+	  chomp $h_content;
+	  $l2h_html_count++;
+	  $h_content = l2h_ToCache($count, $h_content);
+	  $l2h_from_html[$count] = $h_content;
+	  $h_content = '';
+	  last;
+	}
+	$h_content = $h_content.$h_line;
+      }
+      if ($hcontent)
+      {
+	print "$ERROR Warning l2h: l2h_end $l2h_name $count not found\n" 
+	  if ($T2H_VERBOSE);
+	close(L2H_HTML);
+	return 0;
+      }
+    }
+  }
+  print "# l2h: Got $l2h_html_count of $l2h_latex_count html contents\n"
+    if ($T2H_VERBOSE);
+
+  close(L2H_HTML);
+  return 1;
+}
+
+sub l2h_FromHtml
+{
+  local($text) = @_;
+  local($done, $to_do, $count);
+  
+  $to_do = $text;
+  
+  while ($to_do =~ /([^\000]*)<!-- l2h_replace $l2h_name ([0-9]+) -->([^\000]*)/)
+  {
+    $to_do = $1;
+    $count = $2;
+    $done = $3.$done;
+    
+    $done = "<!-- l2h_end $l2h_name $count -->".$done
+      if ($T2H_DEBUG & $DEBUG_L2H);
+
+    $done = &l2h_ExtractFromHtml($count) . $done;
+
+    $done = "<!-- l2h_begin $l2h_name $count -->".$done
+      if ($T2H_DEBUG & $DEBUG_L2H);
+  }
+  return $to_do.$done;
+}
+
+
+sub l2h_ExtractFromHtml
+{
+  local($count) = @_;
+  
+  return $l2h_from_html[$count] if ($l2h_from_html[$count]);
+  
+  if ($count >= 0 && $count < $l2h_latex_count)
+  {
+    # now we are in trouble
+    local($l_l2h, $_);
+
+    $l2h_extract_error++;
+    print "$ERROR l2h: can't extract content $count from html\n" 
+      if ($T2H_VERBOSE);
+    # try simple (ordinary) substition (without l2h)
+    $l_l2h = $T2H_L2H;
+    $T2H_L2H = 0;
+    $_ = $l2h_to_latex{$count};
+    $_ = &substitute_style($_); 
+    &unprotect_texi;
+    $_ = "<!-- l2h: ". __LINE__ . " use texi2html -->" . $_
+      if ($T2H_DEBUG & $DEBUG_L2H);
+    $T2H_L2H = $l_l2h;
+    return $_;
+  }
+  else
+  {
+    # now we have been incorrectly called
+    $l2h_range_error++;
+    print "$ERROR l2h: Request of $count content which is out of valide range [0,$l2h_latex_count)\n";
+    return "<!-- l2h: ". __LINE__ . " out of range count $count -->"
+      if ($T2H_DEBUG & $DEBUG_L2H);
+    return "<!-- l2h: out of range count $count -->";
+  }
+}
+    
+sub l2h_FinishFromHtml
+{
+  if ($T2H_VERBOSE)
+  {
+    if ($l2h_extract_error + $l2h_range_error)
+    {
+      print "# l2h: finished from html ($l2h_extract_error extract and $l2h_range_error errors)\n";
+    }
+    else
+    {
+      print "# l2h: finished from html (no errors)\n";
+    }
+  }
+}
+
+sub l2h_Finish
+{
+  l2h_StoreCache();
+  if ($T2H_L2H_CLEAN)
+  {
+    print "# l2h: removing temporary files generated by l2h extension\n"
+      if $T2H_VERBOSE;
+    while (<"$docu_rdir$l2h_name"*>)
+    {
+      unlink $_;
+    }
+  }
+  print "# l2h: Finished\n" if $T2H_VERBOSE;
+  return 1;
+}
+
+##############################
+# stuff for l2h caching
+#
+
+# I tried doing this with a dbm data base, but it did not store all
+# keys/values. Hence, I did as latex2html does it
+sub l2h_InitCache
+{
+  if (-r "$l2h_cache_file")
+  {
+    my $rdo = do "$l2h_cache_file";
+    warn("$ERROR l2h Error: could not load $docu_rdir$l2h_cache_file: $@\n")
+      unless ($rdo);
+  }
+}
+
+sub l2h_StoreCache
+{
+  return unless $l2h_latex_count;
+  
+  my ($key, $value);
+  open(FH, ">$l2h_cache_file") || return warn"$ERROR l2h Error: could not open $docu_rdir$l2h_cache_file for writing: $!\n";
+
+  
+  while (($key, $value) = each %l2h_cache)
+  {
+    # escape stuff
+    $key =~ s|/|\\/|g;
+    $key =~ s|\\\\/|\\/|g;
+    # weird, a \ at the end of the key results in an error
+    # maybe this also broke the dbm database stuff
+    $key =~ s|\\$|\\\\|;
+    $value =~ s/\|/\\\|/g; 
+    $value =~ s/\\\\\|/\\\|/g; 
+    $value =~ s|\\\\|\\\\\\\\|g;
+    print FH "\n\$l2h_cache_key = q/$key/;\n";
+    print FH "\$l2h_cache{\$l2h_cache_key} = q|$value|;\n";
+  }
+  print FH "1;";
+  close(FH);
+}
+
+# return cached html, if it exists for text, and if all pictures
+# are there, as well
+sub l2h_FromCache
+{
+  my $text = shift;
+  my $cached = $l2h_cache{$text};
+  if ($cached)
+  {
+    while ($cached =~ m/SRC="(.*?)"/g)
+    {
+      unless (-e "$docu_rdir$1")
+      {
+	return undef;
+      }
+    }
+    return $cached;
+  }
+  return undef;
+}
+
+# insert generated html into cache, move away images, 
+# return transformed html
+$maximage = 1;
+sub l2h_ToCache
+{
+  my $count = shift;
+  my $content = shift;
+  my @images = ($content =~ /SRC="(.*?)"/g);
+  my ($src, $dest);
+
+  for $src (@images)
+  {
+    $dest = $l2h_img{$src};
+    unless ($dest)
+    {
+      my $ext;
+      if ($src =~ /.*\.(.*)$/ && $1 ne $docu_ext)
+      {
+	$ext = $1;
+      }
+      else
+      {
+	warn "$ERROR: L2h image $src has invalid extension\n";
+	next;
+      }
+      while (-e "$docu_rdir${docu_name}_$maximage.$ext") { $maximage++;}
+      $dest = "${docu_name}_$maximage.$ext";
+      system("cp -f $docu_rdir$src $docu_rdir$dest");
+      $l2h_img{$src} = $dest;
+      unlink "$docu_rdir$src" unless ($DEBUG & DEBUG_L2H);
+    }
+    $content =~ s/$src/$dest/g;
+  }
+  $l2h_cache{$l2h_to_latex[$count]} = $content;
+  return $content;
+}
+
+
+#+++############################################################################
+#                                                                              #
+# Pass 1: read source, handle command, variable, simple substitution           #
+#                                                                              #
+#---############################################################################
+
+@lines = ();				# whole document
+@toc_lines = ();			# table of contents
+@stoc_lines = ();			# table of contents
+$curlevel = 0;				# current level in TOC
+$node = '';				# current node name
+$node_next = '';                        # current node next name               
+$node_prev = '';                        # current node prev name
+$node_up = '';                          # current node up name
+$in_table = 0;				# am I inside a table
+$table_type = '';			# type of table ('', 'f', 'v', 'multi')
+@tables = ();			        # nested table support
+$in_bibliography = 0;			# am I inside a bibliography
+$in_glossary = 0;			# am I inside a glossary
+$in_top = 0;				# am I inside the top node
+$has_top = 0;				# did I see a top node?
+$has_top_command = 0;			# did I see @top for automatic pointers?
+$in_pre = 0;				# am I inside a preformatted section
+$in_list = 0;				# am I inside a list
+$in_html = 0;				# am I inside an HTML section
+$first_line = 1;		        # is it the first line
+$dont_html = 0;				# don't protect HTML on this line
+$deferred_ref = '';			# deferred reference for indexes
+@html_stack = ();			# HTML elements stack
+$html_element = '';			# current HTML element
+&html_reset;
+%macros = ();                           # macros
+
+# init l2h
+$T2H_L2H = &l2h_Init($docu_name) if ($T2H_L2H);
+$T2H_L2H = &l2h_InitToLatex      if ($T2H_L2H);    
+
+# build code for simple substitutions
+# the maps used (%simple_map and %things_map) MUST be aware of this
+# watch out for regexps, / and escaped characters!
+$subst_code = '';
+foreach (keys(%simple_map)) {
+    ($re = $_) =~ s/(\W)/\\$1/g; # protect regexp chars
+    $subst_code .= "s/\\\@$re/$simple_map{$_}/g;\n";
+}
+foreach (keys(%things_map)) {
+    $subst_code .= "s/\\\@$_\\{\\}/$things_map{$_}/g;\n";
+}
+if ($use_acc) {
+    # accentuated characters
+    foreach (keys(%accent_map)) {
+	if ($_ eq "`") {
+	    $subst_code .= "s/$;3";
+	} elsif ($_ eq "'") {
+	    $subst_code .= "s/$;4";
+	} else {
+	    $subst_code .= "s/\\\@\\$_";
+	}
+	$subst_code .= "([a-z])/&\${1}$accent_map{$_};/gi;\n";
+    }
+}
+eval("sub simple_substitutions { $subst_code }");
+
+&init_input;
+INPUT_LINE: while ($_ = &next_line) {
+    #
+    # remove \input on the first lines only
+    #
+    if ($first_line) {
+	next if /^\\input/;
+	$first_line = 0;
+    }
+    # non-@ substitutions cf. texinfmt.el
+    #
+    # parse texinfo tags
+    #
+    $tag = '';
+    $end_tag = '';
+    if (/^\s*\@end\s+(\w+)\b/) {
+	$end_tag = $1;
+    } elsif (/^\s*\@(\w+)\b/) {
+	$tag = $1;
+    }
+    #
+    # handle @html / @end html
+    #
+    if ($in_html) {
+	if ($end_tag eq 'html') {
+	    $in_html = 0;
+	} else {
+	    $tag2pro{$in_html} .= $_;
+	}
+	next;
+    } elsif ($tag eq 'html') {
+	$in_html = $PROTECTTAG . ++$html_num;
+	push(@lines, $in_html);
+	next;
+    }
+
+    #
+    # try to remove inlined comments
+    # syntax from tex-mode.el comment-start-skip
+    #
+    s/((^|[^\@])(\@\@)*)\@c(omment | |\{|$).*/$1/;
+
+# Sometimes I use @c right at the end of  a line ( to suppress the line feed )
+#    s/((^|[^\@])(\@\@)*)\@c(omment)?$/$1/;
+#     s/((^|[^\@])(\@\@)*)\@c(omment)? .*/$1/;
+#     s/(.*)\@c{.*?}(.*)/$1$2/;
+#     s/(.*)\@comment{.*?}(.*)/$1$2/;
+#     s/^(.*)\@c /$1/;
+#     s/^(.*)\@comment /$1/;
+
+    #############################################################
+    # value substitution before macro expansion, so that
+    # it works in macro arguments			    
+    s/\@value{($VARRE)}/$value{$1}/eg;
+			    
+    #############################################################
+    # macro substitution
+    while (/\@(\w+)/g)
+    {
+      if (exists($macros->{$1}))    
+      {
+	my $before = $`;
+	my $name = $1;
+	my $after = $';
+	my @args;
+	my $args;
+	if ($after =~ /^\s*{(.*?[^\\])}(.*)/)  
+	{
+	  $args = $1;
+	  $after = $2;
+	}
+	elsif (@{$macros->{$name}->{Args}} == 1)
+	{
+	  $args = $after;
+	  $args =~ s/^\s*//;
+	  $args =~ s/\s*$//;
+	  $after = '';
+	}
+	$args =~ s|\\\\|\\|g;
+	$args =~ s|\\{|{|g;
+        $args =~ s|\\}|}|g;
+	if (@{$macros->{$name}->{Args}} > 1)
+	{
+	  $args =~ s/(^|[^\\]),/$1$;/g ;
+	  $args =~ s|\\,|,|g;
+	  @args = split(/$;\s*/, $args) if (@{$macros->{$name}->{Args}} > 1);
+	}
+	else
+	{
+	  $args =~ s|\\,|,|g;
+	  @args = ($args);
+	}
+	my $macrobody = $macros->{$name}->{Body};
+	for ($i=0; $i<=$#args; $i++)
+	{
+	  $macrobody =~ s|\\$macros->{$name}->{Args}->[$i]\\|$args[$i]|g;
+	}
+	$macrobody =~ s|\\\\|\\|g;
+	$_ = $before . $macrobody . $after;
+	unshift @input_spool, map {$_ = $_."\n"} split(/\n/, $_);
+	next INPUT_LINE;
+      }
+    }				#
+			    
+    
+    #
+    # try to skip the line
+    #
+    if ($end_tag) {
+        $in_titlepage = 0 if $end_tag eq 'titlepage';
+	next if $to_skip{"end $end_tag"};
+    } elsif ($tag) {
+      $in_titlepage = 1 if $tag eq 'titlepage';
+      next if $to_skip{$tag};
+      last if $tag eq 'bye';
+    }
+    if ($in_top) {
+	# parsing the top node
+	if ($tag eq 'node' || 
+	    ($sec2level{$tag} && $tag !~ /unnumbered/ && $tag !~ /heading/))
+	{
+	    # no more in top
+	    $in_top = 0;
+	    push(@lines, $TOPEND);
+	}
+    }
+    unless ($in_pre) {
+	s/``/\"/g;
+	s/''/\"/g;
+	s/([\w ])---([\w ])/$1--$2/g;
+    }
+    #
+    # analyze the tag
+    #
+    if ($tag) {
+	# skip lines
+	&skip_until($tag), next if $tag eq 'ignore';
+	&skip_until($tag), next if $tag eq 'ifnothtml';
+	if ($tag eq 'ifinfo')
+	{
+	  &skip_until($tag), next unless $T2H_EXPAND eq 'info';
+	}
+	if ($tag eq 'iftex')
+	{
+	  &skip_until($tag), next unless $T2H_EXPAND eq 'tex';
+	} 
+	if ($tag eq 'tex')
+	{
+	  # add to latex2html file
+	  if ($T2H_EXPAND eq 'tex' && $T2H_L2H && ! $in_pre)
+	  {
+	    # add space to the end -- tex(i2dvi) does this, as well 
+	    push(@lines, &l2h_ToLatex(&string_until($tag) . " "));
+	  }
+	  else
+	  {
+	    &skip_until($tag);
+	  }
+	  next;
+	}
+	if ($tag eq 'titlepage')
+	{
+	  next;
+	}
+	# handle special tables
+	if ($tag =~ /^(|f|v|multi)table$/) {
+	    $table_type = $1;
+	    $tag = 'table';
+	}
+	# special cases
+	if ($tag eq 'top' || ($tag eq 'node' && /^\@node\s+top\s*,/i)) {
+	    $in_top = 1;
+	    $has_top = 1;
+	    $has_top_command = 1 if $tag eq 'top';
+	    @lines = (); # ignore all lines before top (title page garbage)
+	    next;
+	} elsif ($tag eq 'node') {
+	  if ($in_top)
+	  {
+	    $in_top = 0;
+	    push(@lines, $TOPEND);
+	  }
+	  warn "$ERROR Bad node line: $_" unless $_ =~ /^\@node\s$NODESRE$/o;
+	  # request of "Richard Y. Kim" <ryk@ap.com>
+	  s/^\@node\s+//;
+	  $_ = &protect_html($_); # if node contains '&' for instance
+	  ($node, $node_next, $node_prev, $node_up) = split(/,/);
+	  &normalise_node($node);
+	  &normalise_node($node_next);
+	  &normalise_node($node_prev);
+	  &normalise_node($node_up);
+	  $node =~ /\"/ ?
+	    push @lines, &html_debug("<A NAME='$node'></A>\n", __LINE__) :
+	    push @lines, &html_debug("<A NAME=\"$node\"></A>\n", __LINE__);
+	  next;
+	} elsif ($tag eq 'include') {
+	    if (/^\@include\s+($FILERE)\s*$/o) {
+		$file = LocateIncludeFile($1);
+		if ($file && -e $file) {
+		    &open($file);
+		    print "# including $file\n" if $T2H_VERBOSE;
+		} else {
+		    warn "$ERROR Can't find $1, skipping";
+		}
+	    } else {
+		warn "$ERROR Bad include line: $_";
+	    }
+	    next;
+	} elsif ($tag eq 'ifclear') {
+	    if (/^\@ifclear\s+($VARRE)\s*$/o) {
+		next unless defined($value{$1});
+		&skip_until($tag);
+	    } else {
+		warn "$ERROR Bad ifclear line: $_";
+	    }
+	    next;
+	} elsif ($tag eq 'ifset') {
+	    if (/^\@ifset\s+($VARRE)\s*$/o) {
+		next if defined($value{$1});
+		&skip_until($tag);
+	    } else {
+		warn "$ERROR Bad ifset line: $_";
+	    }
+	    next;
+	} elsif ($tag eq 'menu') {
+	    unless ($T2H_SHOW_MENU) {
+		&skip_until($tag);
+		next;
+	    }
+	    &html_push_if($tag);
+	    push(@lines, &html_debug('', __LINE__));
+	} elsif ($format_map{$tag}) {
+	    $in_pre = 1 if $format_map{$tag} eq 'PRE';
+	    &html_push_if($format_map{$tag});
+	    push(@lines, &html_debug('', __LINE__));
+	    $in_list++ if $format_map{$tag} eq 'UL' || $format_map{$tag} eq 'OL' ;
+#	    push(@lines, &debug("<BLOCKQUOTE>\n", __LINE__))
+#	      if $tag =~ /example/i;
+	    # sunshine@sunshineco.com: <PRE>bla</PRE> looks better than
+	    # <PRE>\nbla</PRE> (at least on NeXTstep browser
+	    push(@lines, &debug("<$format_map{$tag}>" . 
+				($in_pre ? '' : "\n"), __LINE__));
+	    next;
+	}
+	elsif (exists $complex_format_map->{$tag})
+	{
+	  my $start = eval $complex_format_map->{$tag}->[0];
+	  if ($@)
+	  {
+	    print "$ERROR: eval of complex_format_map->{$tag}->[0] $complex_format_map->{$tag}->[0]: $@";
+	    $start = '<pre>'
+	  }
+	  $in_pre = 1 if $start =~ /<pre/;
+	  push(@lines, html_debug($start. ($in_pre ? '' : "\n"), __LINE__));
+	  next;
+	} elsif ($tag eq 'table') {
+	  # anorland@hem2.passagen.se
+	  # if (/^\s*\@(|f|v|multi)table\s+\@(\w+)/) {
+	     if (/^\s*\@(|f|v|multi)table\s+\@(\w+)|(\{[^\}]*\})/) {
+		$in_table = $2;
+		unshift(@tables, join($;, $table_type, $in_table));
+		if ($table_type eq "multi") {
+		    # don't use borders -- gets confused by empty cells
+		    push(@lines, &debug("<TABLE>\n", __LINE__));
+		    &html_push_if('TABLE');
+		} else {
+		    push(@lines, &debug("<DL COMPACT>\n", __LINE__));
+		    &html_push_if('DL');
+		}
+		push(@lines, &html_debug('', __LINE__));
+	    } else {
+		warn "$ERROR Bad table line: $_";
+	    }
+	    next;
+	} 
+	elsif ($tag eq 'synindex' || $tag eq 'syncodeindex') 
+	{
+	  if (/^\@$tag\s+(\w+)\s+(\w+)\s*$/) 
+	  {
+	    my $from = $1;
+	    my $to = $2;
+	    my $prefix_from = IndexName2Prefix($from);
+	    my $prefix_to = IndexName2Prefix($to);
+
+	    warn("$ERROR unknown from index name $from ind syn*index line: $_"), next
+	      unless $prefix_from;
+	    warn("$ERROR unknown to index name $to ind syn*index line: $_"), next
+	      unless $prefix_to;
+
+	    if ($tag eq 'syncodeindex')
+	    {
+	      $index_properties->{$prefix_to}->{'from_code'}->{$prefix_from} = 1;
+	    }
+	    else
+	    {
+	       $index_properties->{$prefix_to}->{'from'}->{$prefix_from} = 1;
+	    }
+	  } 
+	  else 
+	  {
+	    warn "$ERROR Bad syn*index line: $_";
+	  }
+	  next;
+	} 
+	elsif ($tag eq 'defindex' || $tag eq 'defcodeindex') 
+	{
+	  if (/^\@$tag\s+(\w+)\s*$/) 
+	  {
+	    my $name = $1;
+	    $index_properties->{$name}->{name} = $name;
+	    $index_properties->{$name}->{code} = 1 if $tag eq 'defcodeindex';
+	  } 
+	  else 
+	  {
+	    warn "$ERROR Bad defindex line: $_";
+	  }
+	  next;
+	}
+	elsif (/^\@printindex/)
+	{
+	  push (@lines, "<!--::${section}::-->$_");
+	  next;
+	}
+	elsif ($tag eq 'sp') {
+	    push(@lines, &debug("<P>\n", __LINE__));
+	    next;
+	} elsif ($tag eq 'center') {
+	    push(@lines, &debug("<center>\n", __LINE__));
+	    s/\@center//;
+	} elsif ($tag eq 'setref') {
+	    &protect_html; # if setref contains '&' for instance
+	    if (/^\@$tag\s*{($NODERE)}\s*$/) {
+		$setref = $1;
+		$setref =~ s/\s+/ /g; # normalize
+		$setref =~ s/ $//;
+		$node2sec{$setref} = $name;
+		$sec2node{$name} = $setref;
+		$node2href{$setref} = "$docu_doc#$docid";
+	    } else {
+		warn "$ERROR Bad setref line: $_";
+	    }
+	    next;
+	} elsif ($tag eq 'lowersections') {
+	    local ($sec, $level);
+	    while (($sec, $level) = each %sec2level) {
+		$sec2level{$sec} = $level + 1;
+	    }
+	    next;
+	} elsif ($tag eq 'raisesections') {
+	    local ($sec, $level);
+	    while (($sec, $level) = each %sec2level) {
+		$sec2level{$sec} = $level - 1;
+	    }
+	    next;
+	}
+	elsif ($tag eq 'macro' || $tag eq 'rmacro')
+	{
+	  if (/^\@$tag\s*(\w+)\s*(.*)/)
+	  {
+	    my $name = $1;
+	    my @args;
+	    @args = split(/\s*,\s*/ , $1)
+	      if ($2 =~ /^\s*{(.*)}\s*/);
+	    
+	    $macros->{$name}->{Args} = \@args;
+	    $macros->{$name}->{Body} = '';
+	    while (($_ = &next_line) && $_ !~ /\@end $tag/)
+	    {
+	      $macros->{$name}->{Body} .= $_;
+	    }
+	    die "ERROR: No closing '\@end $tag' found for macro definition of '$name'\n"
+	      unless (/\@end $tag/);
+	    chomp $macros->{$name}->{Body};
+	  }
+	  else
+	  {
+	    warn "$ERROR: Bad macro defintion $_"
+	  }
+	  next;
+	}
+	elsif ($tag eq 'unmacro')
+	{
+	  delete $macros->{$1} if (/^\@unmacro\s*(\w+)/);
+	  next;
+	}
+	elsif ($tag eq 'documentlanguage')
+	{
+	  SetDocumentLanguage($1) if (!$T2H_LANG && /documentlanguage\s*(\w+)/);
+	}
+	elsif (defined($def_map{$tag})) {
+	    if ($def_map{$tag}) {
+		s/^\@$tag\s+//;
+		$tag = $def_map{$tag};
+		$_ = "\@$tag $_";
+		$tag =~ s/\s.*//;
+	    }
+	} elsif (defined($user_sub{$tag})) {
+	    s/^\@$tag\s+//;
+	    $sub = $user_sub{$tag};
+	    print "# user $tag = $sub, arg: $_" if $T2H_DEBUG & $DEBUG_USER;
+	    if (defined(&$sub)) {
+		chop($_);
+		&$sub($_);
+	    } else {
+		warn "$ERROR Bad user sub for $tag: $sub\n";
+	    }
+	    next;
+	  } 
+	if (defined($def_map{$tag})) {
+	    s/^\@$tag\s+//;
+	    if ($tag =~ /x$/) {
+		# extra definition line
+		$tag = $`;
+		$is_extra = 1;
+	    } else {
+		$is_extra = 0;
+	    }
+	    while (/\{([^\{\}]*)\}/) {
+		# this is a {} construct
+		($before, $contents, $after) = ($`, $1, $');
+		# protect spaces
+		$contents =~ s/\s+/$;9/g;
+		# restore $_ protecting {}
+		$_ = "$before$;7$contents$;8$after";
+	    }
+	    @args = split(/\s+/, &protect_html($_));
+	    foreach (@args) {
+		s/$;9/ /g;	# unprotect spaces
+		s/$;7/\{/g;	# ... {
+		s/$;8/\}/g;	# ... }
+	    }
+	    $type = shift(@args);
+	    $type =~ s/^\{(.*)\}$/$1/;
+	    print "# def ($tag): {$type} ", join(', ', @args), "\n"
+		if $T2H_DEBUG & $DEBUG_DEF;
+	    $type .= ':'; # it's nicer like this
+	    my $name = shift(@args);
+	    $name =~ s/^\{(.*)\}$/$1/;
+	    if ($is_extra) {
+		$_ = &debug("<DT>", __LINE__);
+	    } else {
+		$_ = &debug("<DL>\n<DT>", __LINE__);
+	    }
+	    if ($tag eq 'deffn' || $tag eq 'defvr' || $tag eq 'deftp') {
+		$_ .= "<U>$type</U> <B>$name</B>";
+		$_ .= " <I>@args</I>" if @args;
+	    } elsif ($tag eq 'deftypefn' || $tag eq 'deftypevr'
+		     || $tag eq 'defcv' || $tag eq 'defop') {
+		$ftype = $name;
+		$name = shift(@args);
+		$name =~ s/^\{(.*)\}$/$1/;
+		$_ .= "<U>$type</U> $ftype <B>$name</B>";
+		$_ .= " <I>@args</I>" if @args;
+	    } else {
+		warn "$ERROR Unknown definition type: $tag\n";
+		$_ .= "<U>$type</U> <B>$name</B>";
+		$_ .= " <I>@args</I>" if @args;
+	    }
+ 	    $_ .= &debug("\n<DD>", __LINE__);
+	    $name = &unprotect_html($name);
+	    if ($tag eq 'deffn' || $tag eq 'deftypefn') {
+	      EnterIndexEntry('f', $name, $docu_doc, $section, \@lines);
+#		unshift(@input_spool, "\@findex $name\n");
+	    } elsif ($tag eq 'defop') {
+	      EnterIndexEntry('f', "$name on $ftype", $docu_doc, $section, \@lines);
+#		unshift(@input_spool, "\@findex $name on $ftype\n");
+	    } elsif ($tag eq 'defvr' || $tag eq 'deftypevr' || $tag eq 'defcv') {
+	      EnterIndexEntry('v', $name, $docu_doc, $section, \@lines);
+#		unshift(@input_spool, "\@vindex $name\n");
+	    } else {
+	      EnterIndexEntry('t', $name, $docu_doc, $section, \@lines);
+#		unshift(@input_spool, "\@tindex $name\n");
+	    }
+	    $dont_html = 1;
+	}
+    } elsif ($end_tag) {
+	if ($format_map{$end_tag}) {
+	    $in_pre = 0 if $format_map{$end_tag} eq 'PRE';
+	    $in_list-- if $format_map{$end_tag} eq 'UL' || $format_map{$end_tag} eq 'OL' ;
+	    &html_pop_if('P');
+	    &html_pop_if('LI');
+	    &html_pop_if();
+	    push(@lines, &debug("</$format_map{$end_tag}>\n", __LINE__));
+	    push(@lines, &html_debug('', __LINE__));
+	}
+	elsif (exists $complex_format_map->{$end_tag})
+	{
+	  my $end = eval $complex_format_map->{$end_tag}->[1];
+	  if ($@)
+	  {
+	    print "$ERROR: eval of complex_format_map->{$end_tag}->[1] $complex_format_map->{$end_tag}->[0]: $@";
+	    $end = '</pre>'
+	  }
+	  $in_pre = 0 if $end =~ m|</pre>|;
+	  push(@lines, html_debug($end, __LINE__));
+	} elsif ($end_tag =~ /^(|f|v|multi)table$/) {
+	    unless (@tables) {
+		warn "$ERROR \@end $end_tag without \@*table\n";
+		next;
+	    }
+	    &html_pop_if('P');
+	    ($table_type, $in_table) = split($;, shift(@tables));
+	    unless ($1 eq $table_type) {
+		warn "$ERROR \@end $end_tag without matching \@$end_tag\n";
+		next;
+	    }
+	    if ($table_type eq "multi") {
+		push(@lines, "</TR></TABLE>\n");
+		&html_pop_if('TR');
+	    } else {
+		push(@lines, "</DL>\n");
+		&html_pop_if('DD');
+	    }
+	    &html_pop_if();
+	    if (@tables) {
+		($table_type, $in_table) = split($;, $tables[0]);
+	    } else {
+		$in_table = 0;
+	    }
+	} elsif (defined($def_map{$end_tag})) {
+ 	    push(@lines, &debug("</DL>\n", __LINE__));
+	} elsif ($end_tag eq 'menu') {
+	    &html_pop_if();
+	    push(@lines, $_); # must keep it for pass 2
+	} 
+	next;
+    }
+    #############################################################
+    # anchor insertion
+    while (/\@anchor\s*\{(.*?)\}/)
+    {
+      $_ = $`.$';
+      my $anchor = $1;
+      $anchor = &normalise_node($anchor);
+      push @lines, &html_debug("<A NAME=\"$anchor\"></A>\n");
+      $node2href{$anchor} = "$docu_doc#$anchor";
+      next INPUT_LINE if $_ =~ /^\s*$/;
+    }
+
+    #############################################################
+    # index entry generation, after value substitutions
+    if (/^\@(\w+?)index\s+/)
+    {
+      EnterIndexEntry($1, $', $docu_doc, $section, \@lines);
+      next;
+    }
+    #
+    # protect texi and HTML things
+    &protect_texi;
+    $_ = &protect_html($_) unless $dont_html;
+    $dont_html = 0;
+    # substitution (unsupported things)
+    s/^\@exdent\s+//g;
+    s/\@noindent\s+//g;
+    s/\@refill\s+//g;
+    # other substitutions
+    &simple_substitutions;
+    s/\@footnote\{/\@footnote$docu_doc\{/g; # mark footnotes, cf. pass 4
+    #
+    # analyze the tag again
+    #
+    if ($tag) {
+      if (defined($sec2level{$tag}) && $sec2level{$tag} > 0) {
+	    if (/^\@$tag\s+(.+)$/) {
+		$name = $1;
+		$name = &normalise_node($name);
+		$level = $sec2level{$tag};
+		# check for index
+		$first_index_chapter = $node
+		  if ($level == 1 && !$first_index_chapter && 
+		      $name =~ /index/i);
+		if ($in_top && /heading/){
+		    $T2H_HAS_TOP_HEADING = 1;
+                    $_ = &debug("<H$level>$name</H$level>\n", __LINE__);
+		    &html_push_if('body');
+		    print "# top heading, section $name, level $level\n"
+			if $T2H_DEBUG & $DEBUG_TOC;
+		}
+		else
+		{
+		  unless (/^\@\w*heading/)
+		  {
+		    unless (/^\@unnumbered/)
+		    {
+		      my $number = &update_sec_num($tag, $level);
+		      $name = $number. ' ' . $name if $T2H_NUMBER_SECTIONS;
+		      $sec2number{$name} = $number;
+		      $number2sec{$number} = $name;
+		    }
+		    if (defined($toplevel))
+		    {
+		      push @lines, ($level==$toplevel ? $CHAPTEREND : $SECTIONEND);
+		    }
+		    else
+		    {
+		      # first time we see a "section"
+		      unless ($level == 1) 
+		      {
+			warn "$WARN The first section found is not of level 1: $_";
+		      }
+		      $toplevel = $level;
+		    }
+		    push(@sections, $name);
+		    next_doc() if ($T2H_SPLIT eq 'section' ||
+				   $T2H_SPLIT && $level == $toplevel);
+		  }
+		  $sec_num++;
+		  $docid = "SEC$sec_num";
+		  $tocid = (/^\@\w*heading/ ? undef : "TOC$sec_num");
+		  # check biblio and glossary
+		  $in_bibliography = ($name =~ /^([A-Z]|\d+)?(\.\d+)*\s*bibliography$/i);
+		  $in_glossary = ($name =~ /^([A-Z]|\d+)?(\.\d+)*\s*glossary$/i);
+		  # check node
+		  if ($node)
+		  {
+		    warn "$ERROR Duplicate node found: $node\n"
+		      if ($node2sec{$node});
+		  }
+		  else
+		  {
+		    $name .= ' ' while ($node2sec{$name});
+		    $node = $name;
+		  }
+		  $name .= ' ' while ($sec2node{$name});
+		  $section = $name; 
+		  $node2sec{$node} = $name;
+		  $sec2node{$name} = $node;
+		  $node2href{$node} = "$docu_doc#$docid";
+		  $node2next{$node} = $node_next;
+		  $node2prev{$node} = $node_prev;
+		  $node2up{$node} = $node_up;
+		  print "# node $node, section $name, level $level\n"
+		    if $T2H_DEBUG & $DEBUG_TOC;
+
+		  $node = '';
+		  $node_next = '';
+		  $node_prev = '';
+		  $node_next = '';
+		  if ($tocid)
+		  {
+		    # update TOC
+		    while ($level > $curlevel) {
+		      $curlevel++;
+		      push(@toc_lines, "<UL>\n");
+		    }
+		    while ($level < $curlevel) {
+		      $curlevel--;
+		      push(@toc_lines, "</UL>\n");
+		    }
+		    $_ = &t2h_anchor($tocid, "$docu_doc#$docid", $name, 1);
+		    $_ = &substitute_style($_);
+		    push(@stoc_lines, "$_<BR>\n") if ($level == 1);
+		    if ($T2H_NUMBER_SECTIONS)
+		    {
+		      push(@toc_lines, $_ . "<BR>\n")
+		    }
+		    else
+		    {
+		      push(@toc_lines, "<LI>" . $_ ."</LI>");
+		    }
+		  }
+		  else
+		  {
+		    push(@lines, &html_debug("<A NAME=\"$docid\"></A>\n", 
+					   __LINE__));
+		  }
+		  # update DOC
+		  push(@lines, &html_debug('', __LINE__));
+		  &html_reset;
+		  $_ =  "<H$level> $name </H$level>\n<!--docid::${docid}::-->\n";
+		  $_ = &debug($_, __LINE__);
+		  push(@lines, &html_debug('', __LINE__));
+		}
+		# update DOC
+		foreach $line (split(/\n+/, $_)) {
+		    push(@lines, "$line\n");
+		}
+		next;
+	    } else {
+		warn "$ERROR Bad section line: $_";
+	    }
+	} else {
+	    # track variables
+	    $value{$1} = Unprotect_texi($2), next if /^\@set\s+($VARRE)\s+(.*)$/o;
+	    delete $value{$1}, next if /^\@clear\s+($VARRE)\s*$/o;
+	    # store things
+	    $value{'_shorttitle'} = Unprotect_texi($1), next if /^\@shorttitle\s+(.*)$/;
+	    $value{'_setfilename'}   = Unprotect_texi($1), next if /^\@setfilename\s+(.*)$/;
+	    $value{'_settitle'}      = Unprotect_texi($1), next if /^\@settitle\s+(.*)$/;
+	    $value{'_author'}   .= Unprotect_texi($1)."\n", next if /^\@author\s+(.*)$/;
+	    $value{'_subtitle'} .= Unprotect_texi($1)."\n", next if /^\@subtitle\s+(.*)$/;
+	    $value{'_title'}    .= Unprotect_texi($1)."\n", next if /^\@title\s+(.*)$/;
+
+	    # list item
+	    if (/^\s*\@itemx?\s+/) {
+		$what = $';
+		$what =~ s/\s+$//;
+		if ($in_bibliography && $use_bibliography) {
+		    if ($what =~ /^$BIBRE$/o) {
+			$id = 'BIB' . ++$bib_num;
+			$bib2href{$what} = "$docu_doc#$id";
+			print "# found bibliography for '$what' id $id\n"
+			    if $T2H_DEBUG & $DEBUG_BIB;
+			$what = &t2h_anchor($id, '', $what);
+		    }
+		} elsif ($in_glossary && $T2H_USE_GLOSSARY) {
+		    $id = 'GLOSS' . ++$gloss_num;
+		    $entry = $what;
+		    $entry =~ tr/A-Z/a-z/ unless $entry =~ /^[A-Z\s]+$/;
+		    $gloss2href{$entry} = "$docu_doc#$id";
+		    print "# found glossary for '$entry' id $id\n"
+			if $T2H_DEBUG & $DEBUG_GLOSS;
+		    $what = &t2h_anchor($id, '', $what);
+		}
+		elsif ($in_table && ($table_type eq 'f' || $table_type eq 'v'))
+		{
+		  EnterIndexEntry($table_type, $what, $docu_doc, $section, \@lines);
+		}
+		&html_pop_if('P');
+		if ($html_element eq 'DL' || $html_element eq 'DD') {
+		    if ($things_map{$in_table} && !$what) {
+			# special case to allow @table @bullet for instance
+			push(@lines, &debug("<DT>$things_map{$in_table}\n", __LINE__));
+		    } else {
+			push(@lines, &debug("<DT>\@$in_table\{$what\}\n", __LINE__));
+		    }
+		    push(@lines, "<DD>");
+		    &html_push('DD') unless $html_element eq 'DD';
+		    if ($table_type) { # add also an index
+			unshift(@input_spool, "\@${table_type}index $what\n");
+		    }
+		} elsif ($html_element eq 'TABLE') {
+		    push(@lines, &debug("<TR><TD>$what</TD>\n", __LINE__));
+		    &html_push('TR');
+		} elsif ($html_element eq 'TR') {
+		    push(@lines, &debug("</TR>\n", __LINE__));
+		    push(@lines, &debug("<TR><TD>$what</TD>\n", __LINE__));
+		} else {
+		    push(@lines, &debug("<LI>$what\n", __LINE__));
+		    &html_push('LI') unless $html_element eq 'LI';
+		}
+		push(@lines, &html_debug('', __LINE__));
+		if ($deferred_ref) {
+		    push(@lines, &debug("$deferred_ref\n", __LINE__));
+		    $deferred_ref = '';
+		}
+		next;
+	    } elsif (/^\@tab\s+(.*)$/) {
+		push(@lines, "<TD>$1</TD>\n");
+		next;
+	    }
+	}
+    }
+    # paragraph separator
+    if ($_ eq "\n" && ! $in_pre) {
+	next if $#lines >= 0 && $lines[$#lines] eq "\n";
+	if ($html_element eq 'P') {
+	    push (@lines, &debug("</P><P>\n", __LINE__));
+	}
+# 	else
+# 	{
+# 	  push(@lines, "<P></P>\n");
+# 	  $_ = &debug("<P></P>\n", __LINE__);
+# 	}
+        elsif ($html_element eq 'body' || $html_element eq 'BLOCKQUOTE' || $html_element eq 'DD' || $html_element eq 'LI') 
+	{
+	  &html_push('P');
+	  push(@lines, &debug("<P>\n", __LINE__));
+	}
+      }
+    # otherwise
+    push(@lines, $_) unless $in_titlepage;
+    push(@lines, &debug("</center>\n", __LINE__))  if ($tag eq 'center');
+}
+
+# finish TOC
+$level = 0;
+while ($level < $curlevel) {
+    $curlevel--;
+    push(@toc_lines, "</UL>\n");
+}
+
+print "# end of pass 1\n" if $T2H_VERBOSE;
+
+SetDocumentLanguage('en') unless ($T2H_LANG);
+#+++############################################################################
+#                                                                              #
+# Stuff related to Index generation                                            #
+#                                                                              #
+#---############################################################################
+
+sub EnterIndexEntry
+{
+  my $prefix = shift;
+  my $key = shift;
+  my $docu_doc = shift;
+  my $section = shift;
+  my $lines = shift;
+  local $_;
+
+  warn "$ERROR Undefined index command: $_", next
+    unless (exists ($index_properties->{$prefix}));
+  $key =~ s/\s+$//;
+  $_ = $key;
+  &protect_texi;
+  $key = $_;
+  $_ = &protect_html($_);
+  my $html_key = substitute_style($_);
+  my $id;
+  $key = remove_style($key);
+  $key = remove_things($key);
+  $_ = $key;
+  &unprotect_texi;
+  $key = $_;
+  while (exists $index->{$prefix}->{$key}) {$key .= ' '};
+  if ($lines->[$#lines] =~ /^<!--docid::(.+)::-->$/)
+  {
+    $id = $1;
+  }
+  else
+  {
+    $id = 'IDX' . ++$idx_num;
+    push(@$lines, &t2h_anchor($id, '', $T2H_INVISIBLE_MARK, !$in_pre));
+  }
+  $index->{$prefix}->{$key}->{html_key} = $html_key;
+  $index->{$prefix}->{$key}->{section} = $section;
+  $index->{$prefix}->{$key}->{href} = "$docu_doc#$id";
+  print "# found ${prefix}index  for '$key' with id $id\n"
+    if $T2H_DEBUG & $DEBUG_INDEX;
+}
+
+sub IndexName2Prefix
+{
+  my $name = shift;
+  my $prefix;
+
+  for $prefix (keys %$index_properties)
+  {
+    return $prefix if ($index_properties->{$prefix}->{name} eq $name);
+  }
+  return undef;
+}
+
+sub GetIndexEntries
+{
+  my $normal = shift;
+  my $code = shift;
+  my ($entries, $prefix, $key) = ({});
+  
+  for $prefix (keys %$normal)
+  {
+    for $key (keys %{$index->{$prefix}})
+    {
+      $entries->{$key} = {%{$index->{$prefix}->{$key}}};
+    }
+  }
+
+  if (defined($code))
+  {
+    for $prefix (keys %$code)
+    {
+      unless (exists $normal->{$keys})
+      {
+	for $key (keys %{$index->{$prefix}})
+	{
+	  $entries->{$key} = {%{$index->{$prefix}->{$key}}};
+	  $entries->{$key}->{html_key} = "<CODE>$entries->{$key}->{html_key}</CODE>";
+	}
+      }
+    }
+  }
+  return $entries;
+}
+
+sub byAlpha
+{
+  if ($a =~ /^[A-Za-z]/)
+  {
+    if ($b =~ /^[A-Za-z]/)
+    {
+      return lc($a) cmp lc($b);
+    }
+    else
+    {
+      return 1;
+    }
+  }
+  elsif ($b =~ /^[A-Za-z]/)
+  {
+    return -1;
+  }
+  else
+  {
+    return lc($a) cmp lc($b);
+  } 
+}
+
+sub GetIndexPages
+{
+  my $entries = shift;
+  my (@Letters, $key);
+  my ($EntriesByLetter, $Pages, $page) = ({}, [], {});
+  my @keys = sort byAlpha keys %$entries;
+
+  for $key (@keys)
+  {
+    push @{$EntriesByLetter->{uc(substr($key,0, 1))}} , $entries->{$key};
+  }
+  @Letters = sort byAlpha keys %$EntriesByLetter;
+  
+  $T2H_SPLIT_INDEX = 0 unless ($T2H_SPLIT);
+
+  unless ($T2H_SPLIT_INDEX)
+  {
+    $page->{First} = $Letters[0];
+    $page->{Last} = $Letters[$#Letters];
+    $page->{Letters} = \@Letters;
+    $page->{EntriesByLetter} = $EntriesByLetter;
+    push @$Pages, $page;
+    return $Pages;
+  }
+
+  if ($T2H_SPLIT_INDEX =~ /^\d+$/)
+  {
+    my $i = 0;
+    my ($prev_letter, $letter);
+    $page->{First} = $Letters[0];
+    for $letter (@Letters)
+    {
+      if ($i > $T2H_SPLIT_INDEX)
+      {
+	$page->{Last} = $prev_letter;
+	push @$Pages, {%$page};
+	$page->{Letters} = [];
+	$page->{EntriesByLetter} = {};
+	$page->{First} = $letter;
+	$i=0;
+      }
+      push @{$page->{Letters}}, $letter;
+      $page->{EntriesByLetter}->{$letter} = [@{$EntriesByLetter->{$letter}}];
+      $i += scalar(@{$EntriesByLetter->{$letter}});
+      $prev_letter = $letter;
+    }
+    $page->{Last} = $Letters[$#Letters];
+    push @$Pages, {%$page};
+  }
+  return $Pages;
+}
+
+sub GetIndexSummary
+{
+  my $first_page = shift;
+  my $Pages = shift;
+  my $name = shift;
+  my ($page, $letter, $summary, $i, $l1, $l2, $l);
+
+  $i = 0;
+  $summary = '<table><tr><th valign=top>Jump to: &nbsp; </th><td>';
+  
+  for $page ($first_page, @$Pages)
+  {
+    for $letter (@{$page->{Letters}})
+    {
+      $l = t2h_anchor('', "$page->{href}#${name}_$letter", "<b>$letter</b>", 
+		      0, 'style="text-decoration:none"') . "\n &nbsp; \n";
+      
+      if ($letter =~ /^[A-Za-z]/)
+      {
+	$l2 .= $l;
+      }
+      else
+      {
+	$l1 .= $l;
+      }
+    }
+  }
+  $summary .= $l1 . "<BR>\n" if ($l1);
+  $summary .= $l2 . '</td></tr></table><br>';
+  return $summary;
+}
+
+sub PrintIndexPage
+{
+  my $lines = shift;
+  my $summary = shift;
+  my $page = shift;
+  my $name = shift;
+
+  push @$lines, $summary;
+
+  push @$lines , <<EOT;
+<P></P>
+<TABLE border=0>
+<TR><TD></TD><TH ALIGN=LEFT>Index Entry</TH><TH ALIGN=LEFT> Section</TH></TR>
+<TR><TD COLSPAN=3> <HR></TD></TR>
+EOT
+
+  for $letter (@{$page->{Letters}})
+  {
+    push @$lines, "<TR><TH><A NAME=\"${name}_$letter\"></A>$letter</TH><TD></TD><TD></TD></TR>\n";
+    for $entry (@{$page->{EntriesByLetter}->{$letter}})
+    {
+      push @$lines, 
+      "<TR><TD></TD><TD valign=top>" . 
+	t2h_anchor('', $entry->{href}, $entry->{html_key}) .
+	  "</TD><TD valign=top>" . 
+	    t2h_anchor('', sec_href($entry->{section}), clean_name($entry->{section})) .
+	      "</TD></TR>\n";
+    }
+    push @$lines, "<TR><TD COLSPAN=3> <HR></TD></TR>\n";
+  }
+  push @$lines, "</TABLE><P></P>";
+  push @$lines, $summary;
+}
+
+sub PrintIndex
+{
+  my $lines = shift;
+  my $name = shift;
+  my $section = shift;
+  $section = 'Top' unless $section;
+  my $prefix = IndexName2Prefix($name);
+
+  warn ("$ERROR printindex: bad index name: $name"), return 
+    unless $prefix;
+
+  if ($index_properties->{$prefix}->{code})
+  {
+    $index_properties->{$prefix}->{from_code}->{$prefix} = 1;
+  }
+  else
+  {
+    $index_properties->{$prefix}->{from}->{$prefix}= 1;
+  }
+
+  my $Entries = GetIndexEntries($index_properties->{$prefix}->{from}, 
+				$index_properties->{$prefix}->{from_code});
+  return unless %$Entries;
+
+  if ($T2H_IDX_SUMMARY)
+  {
+    my $key;
+    open(FHIDX, ">$docu_rdir$docu_name" . "_$name.idx")
+      || die "Can't open > $docu_rdir$docu_name" . "_$name.idx for writing: $!\n";
+    print "# writing $name index summary in $docu_rdir$docu_name" . "_$name.idx...\n" if $T2H_VERBOSE;
+
+    for $key (sort keys %$Entries)
+    {
+      print FHIDX "$key\t$Entries->{$key}->{href}\n";
+    }
+  }
+
+  my $Pages = GetIndexPages($Entries);
+  my $page;
+  my $first_page = shift @$Pages;
+  my $sec_name = $section;
+  # remove section number
+  $sec_name =~ s/.*? // if $sec_name =~ /^([A-Z]|\d+)\./;
+
+  ($first_page->{href} = sec_href($section)) =~ s/\#.*$//;
+  # Update tree structure of document
+  if (@$Pages)
+  {
+    my $sec;
+    my @after;
+
+    while (@sections && $sections[$#sections] ne $section)
+    {
+      unshift @after, pop @sections;
+    }
+
+    for $page (@$Pages)
+    {
+      my $node = ($page->{First} ne $page->{Last} ? 
+		  "$sec_name: $page->{First} -- $page->{Last}" :
+		  "$sec_name: $page->{First}");
+      push @sections, $node;
+      $node2sec{$node} = $node;
+      $sec2node{$node} = $node;
+      $node2up{$node} = $section;
+      $page->{href} = next_doc();
+      $page->{name} = $node;
+      $node2href{$node} = $page->{href};
+      if ($prev_node)
+      {
+	$node2next{$prev_node} = $node;
+	$node2prev{$node} = $prev_node;
+      }
+      $prev_node = $node;
+    }
+    push @sections, @after;
+  }
+
+  my $summary = GetIndexSummary($first_page, $Pages, $name);
+  PrintIndexPage($lines, $summary, $first_page, $name);
+  for $page (@$Pages)
+  {
+    push @$lines, ($T2H_SPLIT eq 'chapter' ? $CHAPTEREND : $SECTIONEND);
+    push @$lines, "<H2 ALIGN=\"Left\">$page->{name}</H2>\n";
+    PrintIndexPage($lines, $summary, $page, $name);
+  }
+}
+
+
+#+++############################################################################
+#                                                                              #
+# Pass 2/3: handle style, menu, index, cross-reference                         #
+#                                                                              #
+#---############################################################################
+
+@lines2 = ();				# whole document (2nd pass)
+@lines3 = ();				# whole document (3rd pass)
+$in_menu = 0;				# am I inside a menu
+
+while (@lines) {
+    $_ = shift(@lines);
+    #
+    # special case (protected sections)
+    #
+    if (/^$PROTECTTAG/o) {
+	push(@lines2, $_);
+	next;
+    }
+    #
+    # menu
+    #
+    if (/^\@menu\b/)
+    {
+      $in_menu = 1;
+      $in_menu_listing = 1;
+      push(@lines2, &debug("<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0> \n", __LINE__));
+      next;
+    }
+    if (/^\@end\s+menu\b/)
+    {
+      if ($in_menu_listing)
+      {
+	push(@lines2, &debug("</TABLE></BLOCKQUOTE>\n", __LINE__));
+      }
+      else
+      {
+	push(@lines2, &debug("</BLOCKQUOTE>\n", __LINE__));
+      }
+      $in_menu = 0;
+      $in_menu_listing = 0;
+      next;
+    }
+    if ($in_menu) 
+    {
+      my ($node, $name, $descr);
+      if (/^\*\s+($NODERE)::/o)
+      {
+	$node = $1;
+	$descr = $';
+      }
+      elsif (/^\*\s+(.+):\s+([^\t,\.\n]+)[\t,\.\n]/)
+      {
+	$name = $1;
+	$node = $2;
+	$descr = $';
+      }
+      elsif (/^\*/) 
+      {
+	warn "$ERROR Bad menu line: $_";
+      }
+      else
+      {
+	if ($in_menu_listing)
+	{
+	  $in_menu_listing = 0;
+	  push(@lines2, &debug("</TABLE>\n", __LINE__));
+	}
+	# should be like verbatim -- preseve spaces, etc
+	s/ /\&nbsp;/g;
+	$_ .= "<br>\n";
+	push(@lines2, $_);
+      }
+      if ($node)
+      {
+	if (! $in_menu_listing)
+	{
+	  $in_menu_listing = 1;
+	  push(@lines2, &debug("<TABLE BORDER=0 CELLSPACING=0>\n", __LINE__));
+	}
+	# look for continuation
+	while ($lines[0] =~ /^\s+\w+/)
+	{
+	  $descr .= shift(@lines);
+	}
+	&menu_entry($node, $name, $descr);
+      } 
+      next;
+    }
+    #
+    # printindex
+    #
+    PrintIndex(\@lines2, $2, $1), next
+      if (/^<!--::(.*)::-->\@printindex\s+(\w+)/);
+    #
+    # simple style substitutions
+    #
+    $_ = &substitute_style($_);
+    #
+    # xref
+    #
+    while (/\@(x|px|info|)ref{([^{}]+)(}?)/) {
+	# note: Texinfo may accept other characters
+	($type, $nodes, $full) = ($1, $2, $3);
+	($before, $after) = ($`, $');
+	if (! $full && $after) {
+	    warn "$ERROR Bad xref (no ending } on line): $_";
+	    $_ = "$before$;0${type}ref\{$nodes$after";
+	    next; # while xref
+	}
+	if ($type eq 'x') {
+	    $type = "$T2H_WORDS->{$T2H_LANG}->{'See'} ";
+	} elsif ($type eq 'px') {
+	    $type = "$T2H_WORDS->{$T2H_LANG}->{'see'} ";
+	} elsif ($type eq 'info') {
+	    $type = "$T2H_WORDS->{$T2H_LANG}->{'See'} Info";
+	} else {
+	    $type = '';
+	}
+	unless ($full) {
+	    $next = shift(@lines);
+	    $next = &substitute_style($next);
+	    chop($nodes); # remove final newline
+	    if ($next =~ /\}/) { # split on 2 lines
+		$nodes .= " $`";
+		$after = $';
+	    } else {
+		$nodes .= " $next";
+		$next = shift(@lines);
+		$next = &substitute_style($next);
+		chop($nodes);
+		if ($next =~ /\}/) { # split on 3 lines
+		    $nodes .= " $`";
+		    $after = $';
+		} else {
+		    warn "$ERROR Bad xref (no ending }): $_";
+		    $_ = "$before$;0xref\{$nodes$after";
+		    unshift(@lines, $next);
+		    next; # while xref
+		}
+	    }
+	}
+	$nodes =~ s/\s+/ /g; # remove useless spaces
+	@args = split(/\s*,\s*/, $nodes);
+	$node = $args[0]; # the node is always the first arg
+	$node = &normalise_node($node);
+	$sec = $args[2] || $args[1] || $node2sec{$node};
+	$href = $node2href{$node};
+	if (@args == 5) { # reference to another manual
+	    $sec = $args[2] || $node;
+	    $man = $args[4] || $args[3];
+	    $_ = "${before}${type}$T2H_WORDS->{$T2H_LANG}->{'section'} `$sec' in \@cite{$man}$after";
+	} elsif ($type =~ /Info/) { # inforef
+	    warn "$ERROR Wrong number of arguments: $_" unless @args == 3;
+	    ($nn, $_, $in) = @args;
+	    $_ = "${before}${type} file `$in', node `$nn'$after";
+	} elsif ($sec && $href && ! $T2H_SHORT_REF) {
+	    $_  = "${before}${type}";
+	    $_ .= "$T2H_WORDS->{$T2H_LANG}->{'section'} " if ${type};
+	    $_ .= &t2h_anchor('', $href, $sec) . $after;
+	} 
+	elsif ($href)
+	{
+	  $_ = "${before}${type} " . 
+	    &t2h_anchor('', $href, $args[2] || $args[1] || $node) . 
+	      $after;
+	}
+	else {
+	    warn "$ERROR Undefined node ($node): $_";
+	    $_ = "$before$;0xref{$nodes}$after";
+	}
+    }
+
+    # replace images
+    s[\@image\s*{(.+?)}]
+    {
+     my @args = split (/\s*,\s*/, $1);
+     my $base = $args[0];
+     my $image = 
+       LocateIncludeFile("$base.png") || 
+       LocateIncludeFile("$base.jpg") ||
+       LocateIncludeFile("$base.gif");
+     warn "$ERROR no image file for $base: $_" unless ($image && -e $image);
+     "<IMG SRC=\"$image\" ALT=\"$base\">";
+     ($T2H_CENTER_IMAGE ?
+      "<CENTER><IMG SRC=\"$image\" ALT=\"$base\"></CENTER>" :
+      "<IMG SRC=\"$image\" ALT=\"$base\">");
+    }eg;
+
+    #
+    # try to guess bibliography references or glossary terms
+    #
+    unless (/^<H\d><A NAME=\"SEC\d/) {
+	if ($use_bibliography) {
+	    $done = '';
+	    while (/$BIBRE/o) {
+		($pre, $what, $post) = ($`, $&, $');
+		$href = $bib2href{$what};
+		if (defined($href) && $post !~ /^[^<]*<\/A>/) {
+		    $done .= $pre . &t2h_anchor('', $href, $what);
+		} else {
+		    $done .= "$pre$what";
+		}
+		$_ = $post;
+	    }
+	    $_ = $done . $_;
+	}
+	if ($T2H_USE_GLOSSARY) {
+	    $done = '';
+	    while (/\b\w+\b/) {
+		($pre, $what, $post) = ($`, $&, $');
+		$entry = $what;
+		$entry =~ tr/A-Z/a-z/ unless $entry =~ /^[A-Z\s]+$/;
+		$href = $gloss2href{$entry};
+		if (defined($href) && $post !~ /^[^<]*<\/A>/) {
+		    $done .= $pre . &t2h_anchor('', $href, $what);
+		} else {
+		    $done .= "$pre$what";
+		}
+		$_ = $post;
+	    }
+	    $_ = $done . $_;
+	}
+    }
+    # otherwise
+    push(@lines2, $_);
+}
+print "# end of pass 2\n" if $T2H_VERBOSE;
+
+#
+# split style substitutions
+#
+while (@lines2) {
+    $_ = shift(@lines2);
+    #
+    # special case (protected sections)
+    #
+    if (/^$PROTECTTAG/o) {
+	push(@lines3, $_);
+	next;
+    }
+    #
+    # split style substitutions
+    #
+    $old = '';
+    while ($old ne $_) {
+        $old = $_;
+	if (/\@(\w+)\{/) {
+	    ($before, $style, $after) = ($`, $1, $');
+	    if (defined($style_map{$style})) {
+		$_ = $after;
+		$text = '';
+		$after = '';
+		$failed = 1;
+		while (@lines2) {
+		    if (/\}/) {
+			$text .= $`;
+			$after = $';
+			$failed = 0;
+			last;
+		    } else {
+			$text .= $_;
+			$_ = shift(@lines2);
+		    }
+		}
+		if ($failed) {
+		    die "* Bad syntax (\@$style) after: $before\n";
+		} else {
+		    $text = &apply_style($style, $text);
+		    $_ = "$before$text$after";
+		}
+	    }
+	}
+    }
+    # otherwise
+    push(@lines3, $_);
+}
+print "# end of pass 3\n" if $T2H_VERBOSE;
+	
+#+++############################################################################
+#                                                                              #
+# Pass 4: foot notes, final cleanup                                            #
+#                                                                              #
+#---############################################################################
+
+@foot_lines = ();			# footnotes
+@doc_lines = ();			# final document
+$end_of_para = 0;			# true if last line is <P>
+	
+while (@lines3) {
+    $_ = shift(@lines3);
+    #
+    # special case (protected sections)
+    #
+    if (/^$PROTECTTAG/o) {
+	push(@doc_lines, $_);
+	$end_of_para = 0;
+	next;
+    }
+    #
+    # footnotes
+    #
+    while (/\@footnote([^\{\s]+)\{/) {
+	($before, $d, $after) = ($`, $1, $');
+	$_ = $after;
+	$text = '';
+	$after = '';
+	$failed = 1;
+	while (@lines3) {
+	    if (/\}/) {
+		$text .= $`;
+		$after = $';
+		$failed = 0;
+		last;
+	    } else {
+		$text .= $_;
+		$_ = shift(@lines3);
+	    }
+	}
+	if ($failed) {
+	    die "* Bad syntax (\@footnote) after: $before\n";
+	} else {
+	    $foot_num++;
+	    $docid  = "DOCF$foot_num";
+	    $footid = "FOOT$foot_num";
+	    $foot = "($foot_num)";
+	    push(@foot_lines, "<H3>" . &t2h_anchor($footid, "$d#$docid", $foot) . "</H3>\n");
+	    $text = "<P>$text" unless $text =~ /^\s*<P>/;
+	    push(@foot_lines, "$text\n");
+	    $_ = $before . &t2h_anchor($docid, "$docu_foot#$footid", $foot) . $after;
+	}
+    }
+    #
+    # remove unnecessary <P>
+    #
+    if (/^\s*<P>\s*$/) {
+	next if $end_of_para++;
+    } else {
+	$end_of_para = 0;
+    }
+    # otherwise
+    push(@doc_lines, $_);
+}
+	
+print "# end of pass 4\n" if $T2H_VERBOSE;
+
+#+++############################################################################
+#                                                                              #
+# Pass 5: print things                                                         #
+#                                                                              #
+#---############################################################################
+
+$T2H_L2H = &l2h_FinishToLatex if ($T2H_L2H);
+$T2H_L2H = &l2h_ToHtml        if ($T2H_L2H);
+$T2H_L2H = &l2h_InitFromHtml  if ($T2H_L2H);
+
+# fix node2up, node2prev, node2next, if desired
+if ($has_top_command)
+{
+  for $section (keys %sec2number)
+  {
+    $node = $sec2node{$section};
+    $node2up{$node} = Sec2UpNode($section) unless $node2up{$node};
+    $node2prev{$node} = Sec2PrevNode($section) unless $node2prev{$node};
+    $node2next{$node} = Sec2NextNode($section) unless $node2next{$node};
+  }
+}
+
+# prepare %T2H_THISDOC
+$T2H_THISDOC{fulltitle} = $value{'_title'} || $value{'_settitle'} || "Untitled Document";
+$T2H_THISDOC{title} = $value{'_settitle'} || $T2H_THISDOC{fulltitle};
+$T2H_THISDOC{author} = $value{'_author'};
+$T2H_THISDOC{subtitle} = $value{'_subtitle'};
+$T2H_THISDOC{shorttitle} = $value{'_shorttitle'};
+for $key (keys %T2H_THISDOC)
+{
+  $_ = &substitute_style($T2H_THISDOC{$key});
+  &unprotect_texi;
+  s/\s*$//;
+  $T2H_THISDOC{$key} = $_;
+}
+
+# if no sections, then simply print document as is
+unless (@sections)
+{
+  print "# Writing content into $docu_top_file \n" if $T2H_VERBOSE;
+  open(FILE, "> $docu_top_file") 
+    || die "$ERROR: Can't open $docu_top_file for writing: $!\n";
+
+  &$T2H_print_page_head(\*FILE);
+  $T2H_THIS_SECTION = \@doc_lines;
+  t2h_print_lines(\*FILE);
+  &$T2H_print_foot_navigation(\*FILE);
+  &$T2H_print_page_foot(\*FILE);
+  close(FILE);
+  goto Finish;
+}
+
+# initialize $T2H_HREF, $T2H_NAME
+%T2H_HREF = 
+  (
+   'First' ,   sec_href($sections[0]),
+   'Last',     sec_href($sections[$#sections]),
+   'About',     $docu_about. '#SEC_About',
+  );
+
+# prepare TOC, OVERVIEW, TOP
+$T2H_TOC = \@toc_lines;
+$T2H_OVERVIEW = \@stoc_lines;
+if ($has_top)
+{
+  while (1)
+  {
+    $_ = shift @doc_lines;
+    last if /$TOPEND/;
+    push @$T2H_TOP, $_;
+  }
+  $T2H_HREF{'Top'} = $docu_top . '#SEC_Top';
+}
+else
+{
+  $T2H_HREF{'Top'} = $T2H_HREF{First};
+}
+
+$node2href{Top} = $T2H_HREF{Top};
+$T2H_HREF{Contents} = $docu_toc.'#SEC_Contents' if @toc_lines;
+$T2H_HREF{Overview} = $docu_stoc.'#SEC_OVERVIEW' if @stoc_lines;
+
+# settle on index
+if ($T2H_INDEX_CHAPTER)
+{
+  $T2H_HREF{Index} = $node2href{normalise_node($T2H_INDEX_CHAPTER)};
+  warn "$ERROR T2H_INDEX_CHAPTER '$T2H_INDEX_CHAPTER' not found\n"
+    unless $T2H_HREF{Index};
+}
+if (! $T2H_HREF{Index} && $first_index_chapter)
+{
+  $T2H_INDEX_CHAPTER = $first_index_chapter;
+  $T2H_HREF{Index} = $node2href{$T2H_INDEX_CHAPTER};
+}
+
+print "# Using '" . clean_name($T2H_INDEX_CHAPTER) . "' as index page\n"
+  if ($T2H_VERBOSE && $T2H_HREF{Index});
+
+%T2H_NAME =
+  (
+   'First',   clean_name($sec2node{$sections[0]}),
+   'Last',    clean_name($sec2node{$sections[$#sections]}),
+   'About',    $T2H_WORDS->{$T2H_LANG}->{'About_Title'},
+   'Contents', $T2H_WORDS->{$T2H_LANG}->{'ToC_Title'},
+   'Overview', $T2H_WORDS->{$T2H_LANG}->{'Overview_Title'},
+   'Index' ,   clean_name($T2H_INDEX_CHAPTER),
+   'Top',      clean_name($T2H_TOP_HEADING || $T2H_THISDOC{'title'} || $T2H_THISDOC{'shorttitle'}),
+  );
+
+#############################################################################
+# print frame and frame toc file
+#
+if ( $T2H_FRAMES )
+{
+  open(FILE, "> $docu_frame_file") 
+    || die "$ERROR: Can't open $docu_frame_file for writing: $!\n";
+  print "# Creating frame in $docu_frame_file ...\n" if $T2H_VERBOSE;
+  &$T2H_print_frame(\*FILE);
+  close(FILE);
+
+  open(FILE, "> $docu_toc_frame_file") 
+    || die "$ERROR: Can't open $docu_toc_frame_file for writing: $!\n";
+  print "# Creating toc frame in $docu_frame_file ...\n" if $T2H_VERBOSE;
+   &$T2H_print_toc_frame(\*FILE);
+  close(FILE);
+}
+
+
+#############################################################################
+# print Top
+#
+open(FILE, "> $docu_top_file") 
+  || die "$ERROR: Can't open $docu_top_file for writing: $!\n";
+&$T2H_print_page_head(\*FILE) unless ($T2H_SPLIT);
+
+if ($has_top)
+{
+  print "# Creating Top in $docu_top_file ...\n" if $T2H_VERBOSE;
+  $T2H_THIS_SECTION = $T2H_TOP;
+  $T2H_HREF{This} = $T2H_HREF{Top};
+  $T2H_NAME{This} = $T2H_NAME{Top};
+  &$T2H_print_Top(\*FILE);
+}
+  
+close(FILE) if $T2H_SPLIT;
+
+#############################################################################
+# Print sections
+#
+$T2H_NODE{Forward} = $sec2node{$sections[0]};
+$T2H_NAME{Forward} = &clean_name($sec2node{$sections[0]});
+$T2H_HREF{Forward} = sec_href($sections[0]);
+$T2H_NODE{This} = 'Top';
+$T2H_NAME{This} = $T2H_NAME{Top};
+$T2H_HREF{This} = $T2H_HREF{Top};
+if ($T2H_SPLIT)
+{
+  print "# writing " . scalar(@sections) . 
+    " sections in $docu_rdir$docu_name"."_[1..$doc_num]"
+	  if $T2H_VERBOSE;
+  $previous = ($T2H_SPLIT eq 'chapter' ? $CHAPTEREND : $SECTIONEND);
+  undef $FH;
+  $doc_num = 0;
+}
+else
+{
+  print "# writing " . scalar(@sections) . " sections in $docu_top_file ..." 
+    if $T2H_VERBOSE;
+  $FH = \*FILE;
+  $previous = '';
+}
+
+$counter = 0;
+# loop through sections
+while ($section = shift(@sections)) 
+{
+  if ($T2H_SPLIT && ($T2H_SPLIT eq 'section' || $previous eq $CHAPTEREND))
+  { 
+    if ($FH)
+    {
+      #close previous page
+      &$T2H_print_chapter_footer($FH) if $T2H_SPLIT eq 'chapter';
+      &$T2H_print_page_foot($FH);
+      close($FH);
+      undef $FH;
+    }
+  }
+  $T2H_NAME{Back} = $T2H_NAME{This};
+  $T2H_HREF{Back} = $T2H_HREF{This};
+  $T2H_NODE{Back} = $T2H_NODE{This};
+  $T2H_NAME{This} = $T2H_NAME{Forward};
+  $T2H_HREF{This} = $T2H_HREF{Forward};
+  $T2H_NODE{This} = $T2H_NODE{Forward};
+  if ($sections[0])
+  {
+    $T2H_NODE{Forward} = $sec2node{$sections[0]};
+    $T2H_NAME{Forward} = &clean_name($T2H_NODE{Forward});
+    $T2H_HREF{Forward} = sec_href($sections[0]);
+  }
+  else
+  {
+    undef $T2H_HREF{Forward}, $T2H_NODE{Forward}, $T2H_NAME{Forward};
+  }
+
+  $node = $node2up{$T2H_NODE{This}};
+  $T2H_HREF{Up} = $node2href{$node};
+  if ($T2H_HREF{Up} eq $T2H_HREF{This} || ! $T2H_HREF{Up})
+  {
+    $T2H_NAME{Up} = $T2H_NAME{Top};
+    $T2H_HREF{Up} = $T2H_HREF{Top};
+    $T2H_NODE{Up} = 'Up';
+  }
+  else
+  {
+    $T2H_NAME{Up} = &clean_name($node);
+    $T2H_NODE{Up} = $node;
+  }
+
+  $node = $T2H_NODE{This};
+  $node = $node2prev{$node};
+  $T2H_NAME{Prev} = &clean_name($node);
+  $T2H_HREF{Prev} = $node2href{$node};
+  $T2H_NODE{Prev} = $node;
+
+  $node = $T2H_NODE{This};
+  if ($node2up{$node} && $node2up{$node} ne 'Top'&&
+      ($node2prev{$node} eq $T2H_NODE{Back} || ! $node2prev{$node}))
+  {
+    $node = $node2up{$node};
+    while ($node && $node ne $node2up{$node} && ! $node2prev{$node})
+    {
+      $node = $node2up{$node};
+    }
+    $node = $node2prev{$node} 
+      unless $node2up{$node} eq 'Top' || ! $node2up{$node};
+  }
+  else
+  {
+    $node = $node2prev{$node};
+  }
+  $T2H_NAME{FastBack} = &clean_name($node);
+  $T2H_HREF{FastBack} = $node2href{$node};
+  $T2H_NODE{FastBack} = $node;
+  
+  $node = $T2H_NODE{This};
+  $node = $node2next{$node};
+  $T2H_NAME{Next} = &clean_name($node);
+  $T2H_HREF{Next} = $node2href{$node};
+  $T2H_NODE{Next} = $node;
+
+  $node = $T2H_NODE{This};
+  if ($node2up{$node} && $node2up{$node} ne 'Top'&& 
+      ($node2next{$node} eq $T2H_NODE{Forward} || ! $node2next{$node}))
+  {
+    $node = $node2up{$node};
+    while ($node && $node ne $node2up{$node} && ! $node2next{$node})
+    {
+      $node = $node2up{$node};
+    }
+  }
+  $node = $node2next{$node};
+  $T2H_NAME{FastForward} = &clean_name($node);
+  $T2H_HREF{FastForward} = $node2href{$node};
+  $T2H_NODE{FastForward} = $node;
+
+  if (! defined($FH))
+  {
+    my $file = $T2H_HREF{This};
+    $file =~ s/\#.*$//;
+    open(FILE, "> $docu_rdir$file") || 
+      die "$ERROR: Can't open $docu_rdir$file for writing: $!\n";
+    $FH = \*FILE;
+    &$T2H_print_page_head($FH);
+    t2h_print_label($FH);
+    &$T2H_print_chapter_header($FH) if $T2H_SPLIT eq 'chapter';
+  }
+  else
+  {
+    t2h_print_label($FH);
+  }
+
+  $T2H_THIS_SECTION = [];
+  while (@doc_lines) {
+    $_ = shift(@doc_lines);
+    last if ($_ eq $SECTIONEND || $_ eq $CHAPTEREND);
+    push(@$T2H_THIS_SECTION, $_);
+  }
+  $previous = $_;
+  &$T2H_print_section($FH);
+
+  if ($T2H_VERBOSE)
+  {
+    $counter++;
+    print "." if $counter =~ /00$/;
+  }
+}
+if ($T2H_SPLIT)
+{
+  &$T2H_print_chapter_footer($FH) if $T2H_SPLIT eq 'chapter';
+  &$T2H_print_page_foot($FH);
+  close($FH);
+}
+print "\n" if $T2H_VERBOSE;
+
+#############################################################################
+# Print ToC, Overview, Footnotes
+#
+undef $T2H_HREF{Prev};
+undef $T2H_HREF{Next};
+undef $T2H_HREF{Back};
+undef $T2H_HREF{Forward};
+undef $T2H_HREF{Up};
+
+if (@foot_lines)
+{
+  print "# writing Footnotes in $docu_foot_file...\n" if $T2H_VERBOSE;
+  open (FILE, "> $docu_foot_file") || die "$ERROR: Can't open $docu_foot_file for writing: $!\n"
+      if $T2H_SPLIT;
+  $T2H_HREF{This} = $docu_foot;
+  $T2H_NAME{This} = $T2H_WORDS->{$T2H_LANG}->{'Footnotes_Title'};
+  $T2H_THIS_SECTION = \@foot_lines;
+  &$T2H_print_Footnotes(\*FILE);
+  close(FILE) if $T2H_SPLIT;
+}
+
+if (@toc_lines)
+{
+  print "# writing Toc in $docu_toc_file...\n" if $T2H_VERBOSE;
+  open (FILE, "> $docu_toc_file") || die "$ERROR: Can't open $docu_toc_file for writing: $!\n"
+      if $T2H_SPLIT;
+  $T2H_HREF{This} = $T2H_HREF{Contents};
+  $T2H_NAME{This} = $T2H_NAME{Contents};
+  $T2H_THIS_SECTION = \@toc_lines;
+  &$T2H_print_Toc(\*FILE);
+  close(FILE) if $T2H_SPLIT;
+}
+
+if (@stoc_lines)
+{
+  print "# writing Overview in $docu_stoc_file...\n" if $T2H_VERBOSE;
+  open (FILE, "> $docu_stoc_file") || die "$ERROR: Can't open $docu_stoc_file for writing: $!\n"
+      if $T2H_SPLIT;
+  
+  $T2H_HREF{This} = $T2H_HREF{Overview};
+  $T2H_NAME{This} = $T2H_NAME{Overview};
+  $T2H_THIS_SECTION = \@stoc_lines;
+  unshift @$T2H_THIS_SECTION, "<BLOCKQUOTE>\n";
+  push @$T2H_THIS_SECTION, "\n</BLOCKQUOTE>\n";
+  &$T2H_print_Overview(\*FILE);
+  close(FILE) if $T2H_SPLIT;
+}
+
+if ($about_body = &$T2H_about_body())
+{
+  print "# writing About in $docu_about_file...\n" if $T2H_VERBOSE;
+  open (FILE, "> $docu_about_file") || die "$ERROR: Can't open $docu_about_file for writing: $!\n"
+      if $T2H_SPLIT;
+  
+  $T2H_HREF{This} = $T2H_HREF{About};
+  $T2H_NAME{This} = $T2H_NAME{About};
+  $T2H_THIS_SECTION = [$about_body];
+  &$T2H_print_About(\*FILE);
+  close(FILE) if $T2H_SPLIT;
+}
+
+unless ($T2H_SPLIT)
+{
+  &$T2H_print_page_foot(\*FILE);
+  close (FILE);
+}
+  
+Finish:
+&l2h_FinishFromHtml if ($T2H_L2H);
+&l2h_Finish if($T2H_L2H);
+print "# that's all folks\n" if $T2H_VERBOSE;
+
+exit(0);
+
+#+++############################################################################
+#                                                                              #
+# Low level functions                                                          #
+#                                                                              #
+#---############################################################################
+
+sub LocateIncludeFile
+{
+  my $file = shift;
+  my $dir;
+
+  return $file if (-e $file && -r $file);
+  foreach $dir (@T2H_INCLUDE_DIRS)
+  {
+    return "$dir/$file" if (-e "$dir/$file" && -r "$dir/$file");
+  }
+  return undef;
+}
+
+sub clean_name 
+{
+  local ($_);
+  $_ = &remove_style($_[0]);
+  &unprotect_texi;
+  return $_;
+}
+
+sub update_sec_num {
+    local($name, $level) = @_;
+    my $ret;
+
+    $level--; # here we start at 0
+    if ($name =~ /^appendix/ || defined(@appendix_sec_num)) {
+	# appendix style
+	if (defined(@appendix_sec_num)) {
+	    &incr_sec_num($level, @appendix_sec_num);
+	} else {
+	    @appendix_sec_num = ('A', 0, 0, 0);
+	}
+	$ret = join('.', @appendix_sec_num[0..$level]);
+    } else {
+	# normal style
+	if (defined(@normal_sec_num)) 
+	{
+	  &incr_sec_num($level, @normal_sec_num);
+	} 
+	else 
+	{
+	  @normal_sec_num = (1, 0, 0, 0);
+	}
+	$ret = join('.', @normal_sec_num[0..$level]);
+    }
+    
+    $ret .= "." if $level == 0;
+    return $ret;
+}
+
+sub incr_sec_num {
+    local($level, $l);
+    $level = shift(@_);
+    $_[$level]++;
+    foreach $l ($level+1 .. 3) {
+	$_[$l] = 0;
+    }
+}
+
+sub Sec2UpNode
+{
+  my $sec = shift;
+  my $num = $sec2number{$sec};
+
+  return '' unless $num;
+  return 'Top' unless $num =~ /\.\d+/;
+  $num =~ s/\.[^\.]*$//;
+  $num = $num . '.' unless $num =~ /\./;
+  return $sec2node{$number2sec{$num}};
+}
+
+sub Sec2PrevNode
+{
+  my $sec = shift;
+  my $num = $sec2number{$sec};
+  my ($i, $post);
+  
+  if ($num =~ /(\w+)(\.$|$)/)
+  {
+    $num = $`;
+    $i = $1;
+    $post = $2;
+    if ($i eq 'A')
+    {
+      $i = $normal_sec_num[0];
+    }
+    elsif ($i ne '1')
+    {
+      # unfortunately, -- operator is not magical
+      $i = chr(ord($i) + 1);
+    }
+    else
+    {
+      return '';
+    }
+    return $sec2node{$number2sec{$num . $i . $post}}
+  }
+  return '';
+}
+
+sub Sec2NextNode
+{
+  my $sec = shift;
+  my $num = $sec2number{$sec};
+  my $i;
+
+  if ($num =~ /(\w+)(\.$|$)/)
+  {
+    $num = $`;
+    $i = $1;
+    $post = $2;
+    if ($post eq '.' && $i eq $normal_sec_num[0])
+    {
+      $i = 'A';
+    }
+    else
+    {
+      $i++;
+    }
+    return $sec2node{$number2sec{$num . $i . $post}}
+  }
+  return '';
+}
+
+sub check {
+    local($_, %seen, %context, $before, $match, $after);
+
+    while (<>) {
+	if (/\@(\*|\.|\:|\@|\{|\})/) {
+	    $seen{$&}++;
+	    $context{$&} .= "> $_" if $T2H_VERBOSE;
+	    $_ = "$`XX$'";
+	    redo;
+	}
+	if (/\@(\w+)/) {
+	    ($before, $match, $after) = ($`, $&, $');
+	    if ($before =~ /\b[\w-]+$/ && $after =~ /^[\w-.]*\b/) { # e-mail address
+		$seen{'e-mail address'}++;
+		$context{'e-mail address'} .= "> $_" if $T2H_VERBOSE;
+	    } else {
+		$seen{$match}++;
+		$context{$match} .= "> $_" if $T2H_VERBOSE;
+	    }
+	    $match =~ s/^\@/X/;
+	    $_ = "$before$match$after";
+	    redo;
+	}
+    }
+    
+    foreach (sort(keys(%seen))) {
+	if ($T2H_VERBOSE) {
+	    print "$_\n";
+	    print $context{$_};
+	} else {
+	    print "$_ ($seen{$_})\n";
+	}
+    }
+}
+
+sub open {
+    local($name) = @_;
+
+    ++$fh_name;
+    if (open($fh_name, $name)) {
+	unshift(@fhs, $fh_name);
+    } else {
+	warn "$ERROR Can't read file $name: $!\n";
+    }
+}
+
+sub init_input {
+    @fhs = ();			# hold the file handles to read
+    @input_spool = ();		# spooled lines to read
+    $fh_name = 'FH000';
+    &open($docu);
+}
+
+sub next_line {
+    local($fh, $line);
+
+    if (@input_spool) {
+	$line = shift(@input_spool);
+	return($line);
+    }
+    while (@fhs) {
+	$fh = $fhs[0];
+	$line = <$fh>;
+	return($line) if $line;
+	close($fh);
+	shift(@fhs);
+    }
+    return(undef);
+}
+
+# used in pass 1, use &next_line
+sub skip_until {
+    local($tag) = @_;
+    local($_);
+
+    while ($_ = &next_line) {
+	return if /^\@end\s+$tag\s*$/;
+    }
+    die "* Failed to find '$tag' after: " . $lines[$#lines];
+}
+
+# used in pass 1 for l2h use &next_line
+sub string_until {
+    local($tag) = @_;
+    local($_, $string);
+
+    while ($_ = &next_line) {
+	return $string if /^\@end\s+$tag\s*$/;
+#	$_ =~ s/hbox/mbox/g;
+	$string = $string.$_;
+    }
+    die "* Failed to find '$tag' after: " . $lines[$#lines];
+}
+
+#
+# HTML stacking to have a better HTML output
+#
+
+sub html_reset {
+    @html_stack = ('html');
+    $html_element = 'body';
+}
+
+sub html_push {
+    local($what) = @_;
+    push(@html_stack, $html_element);
+    $html_element = $what;
+}
+
+sub html_push_if {
+    local($what) = @_;
+    push(@html_stack, $html_element)
+	if ($html_element && $html_element ne 'P');
+    $html_element = $what;
+}
+
+sub html_pop {
+    $html_element = pop(@html_stack);
+}
+
+sub html_pop_if {
+    local($elt);
+
+    if (@_) {
+	foreach $elt (@_) {
+	    if ($elt eq $html_element) {
+		$html_element = pop(@html_stack) if @html_stack;
+		last;
+	    }
+	}
+    } else {
+	$html_element = pop(@html_stack) if @html_stack;
+    }
+}
+
+sub html_debug {
+    local($what, $line) = @_;
+    if ($T2H_DEBUG & $DEBUG_HTML)
+    {
+     $what = "\n" unless $what;
+     return("<!-- $line @html_stack, $html_element -->$what")
+    }	
+    return($what);
+}
+
+# to debug the output...
+sub debug {
+    local($what, $line) = @_;
+    return("<!-- $line -->$what")
+	if $T2H_DEBUG & $DEBUG_HTML;
+    return($what);
+}
+
+sub SimpleTexi2Html
+{
+  local $_ = $_[0];
+  &protect_texi;
+  &protect_html;
+  $_ = substitute_style($_);
+  $_[0]  = $_;
+}
+
+sub normalise_node {
+  local $_ = $_[0];
+  s/\s+/ /g;
+  s/ $//;
+  s/^ //;
+  &protect_texi;
+  &protect_html;
+  $_ = substitute_style($_);
+  $_[0]  = $_;
+}
+
+sub menu_entry 
+{
+  my ($node, $name, $descr) = @_;
+  my ($href, $entry);
+  
+  &normalise_node($node);
+  $href = $node2href{$node};
+  if ($href) 
+  {
+    $descr =~ s/^\s+//;
+    $descr =~ s/\s*$//;
+    $descr = SimpleTexi2Html($descr);
+    if ($T2H_NUMBER_SECTIONS && !$T2H_NODE_NAME_IN_MENU && $node2sec{$node})
+    {
+      $entry = $node2sec{$node};
+      $name = '';
+    }
+    else
+    {
+      &normalise_node($name);
+      $entry = ($name && ($name ne $node || ! $T2H_AVOID_MENU_REDUNDANCY) 
+		? "$name : $node" : $node);
+    }
+
+    if ($T2H_AVOID_MENU_REDUNDANCY && $descr)
+    {
+      my $clean_entry = $entry;
+      $clean_entry =~ s/^.*? // if ($clean_entry =~ /^([A-Z]|\d+)\.[\d\.]* /);
+      $clean_entry =~ s/[^\w]//g;
+      my $clean_descr = $descr;
+      $clean_descr =~ s/[^\w]//g;
+      $descr = '' if ($clean_entry eq $clean_descr)
+    }
+    push(@lines2,&debug('<TR><TD ALIGN="left" VALIGN="TOP">' . 
+			&t2h_anchor('', $href, $entry) . 
+			'</TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">' . 
+			$descr . 
+			"</TD></TR>\n", __LINE__));
+  }
+  elsif ($node =~ /^\(.*\)\w+/)
+  {
+    push(@lines2,&debug('<TR><TD ALIGN="left" VALIGN="TOP">' . 
+			$entry . 
+			'</TD><TD ALIGN="left" VALIGN="TOP">' . $descr . 
+			"</TD></TR>\n", __LINE__))
+  }
+  else
+  {
+    warn "$ERROR Undefined node of menu_entry ($node): $_";
+  }
+}
+
+sub do_ctrl { "^$_[0]" }
+
+sub do_email {
+    local($addr, $text) = split(/,\s*/, $_[0]);
+
+    $text = $addr unless $text;
+    &t2h_anchor('', "mailto:$addr", $text);
+}
+
+sub do_sc 
+{ 
+  # l2h does this much better
+  return &l2h_ToLatex("{\\sc ".&unprotect_html($_[0])."}") if ($T2H_L2H);
+  return "\U$_[0]\E";
+}
+
+sub do_math
+{
+  return &l2h_ToLatex("\$".&unprotect_html($_[0])."\$") if ($T2H_L2H);
+  return "<EM>".$text."</EM>";
+}
+
+sub do_uref {
+    local($url, $text, $only_text) = split(/,\s*/, $_[0]);
+
+    $text = $only_text if $only_text;
+    $text = $url unless $text;
+    &t2h_anchor('', $url, $text);
+}
+
+sub do_url { &t2h_anchor('', $_[0], $_[0]) }
+
+sub do_acronym
+{
+  return '<FONT SIZE="-1">' . $_[0] . '</FONT>';
+}
+
+sub do_accent
+{
+  return "&$_[0]acute;" if $_[1] eq 'H';
+  return "$_[0]." if $_[1] eq 'dotaccent';
+  return "$_[0]*" if $_[1] eq 'ringaccent';
+  return "$_[0]".'[' if $_[1] eq 'tieaccent';
+  return "$_[0]".'(' if $_[1] eq 'u';
+  return "$_[0]_" if $_[1] eq 'ubaraccent';
+  return ".$_[0]" if $_[1] eq 'udotaccent';
+  return "$_[0]&lt;" if $_[1] eq 'v';
+  return "&$_[0]cedil;" if $_[1] eq ',';
+  return "$_[0]" if $_[1] eq 'dotless';
+  return undef;
+}
+
+sub apply_style {
+    local($texi_style, $text) = @_;
+    local($style);
+
+    $style = $style_map{$texi_style};
+    if (defined($style)) { # known style
+	if ($style =~ /^\"/) { # add quotes
+	    $style = $';
+	    $text = "\`$text\'";
+	}
+	if ($style =~ /^\&/) { # custom
+	    $style = $';
+	    $text = &$style($text, $texi_style);
+	} elsif ($style) { # good style
+	    $text = "<$style>$text</$style>";
+	} else { # no style
+	}
+    } else { # unknown style
+	$text = undef;
+    }
+    return($text);
+}
+
+# remove Texinfo styles
+sub remove_style {
+    local($_) = @_;
+    1 while(s/\@\w+{([^\{\}]+)}/$1/g);
+    return($_);
+}
+
+sub remove_things
+{
+  local ($_) = @_;
+  s|\@(\w+)\{\}|$1|g;
+  return $_;
+}
+
+sub substitute_style {
+    local($_) = @_;
+    local($changed, $done, $style, $text);
+
+    &simple_substitutions;
+    $changed = 1;
+    while ($changed) {
+	$changed = 0;
+	$done = '';
+	while (/\@(\w+){([^\{\}]+)}/ || /\@(,){([^\{\}]+)}/) {
+	    $text = &apply_style($1, $2);
+	    if ($text) {
+		$_ = "$`$text$'";
+		$changed = 1;
+	    } else {
+		$done .= "$`\@$1";
+		$_ = "{$2}$'";
+	    }
+	}
+        $_ = $done . $_;
+    }
+    return($_);
+}
+
+sub t2h_anchor {
+    local($name, $href, $text, $newline, $extra_attribs) = @_;
+    local($result);
+
+    $result = "<A";
+    $result .= " NAME=\"$name\"" if $name;
+    if ($href)
+    {
+      $href =~ s|^$T2H_HREF_DIR_INSTEAD_FILE|./| 
+	if ($T2H_HREF_DIR_INSTEAD_FILE);
+      $result .= ($href =~ /\"/ ? " HREF='$href'"  : " HREF=\"$href\"");
+    }
+    $result .= " $extra_attribs" if $extra_attribs;
+    $result .= ">$text</A>";
+    $result .= "\n" if $newline;
+    return($result);
+}
+
+sub pretty_date {
+    local(@MoY, $sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst);
+
+    @MoY = ('January', 'February', 'March', 'April', 'May', 'June',
+	    'July', 'August', 'September', 'October', 'November', 'December');
+    ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime(time);
+    $year += ($year < 70) ? 2000 : 1900;
+    # obachman: Let's do it as the Americans do
+    return("$MoY[$mon], $mday  $year");
+}
+
+sub doc_href {
+    local($num) = @_;
+
+    return("${docu_name}_$num.$docu_ext");
+}
+
+sub sec_href
+{
+  return $node2href{$sec2node{$_[0]}};
+}
+
+sub next_doc {
+    $docu_doc = &doc_href(++$doc_num);
+}
+
+sub t2h_print_lines {
+    my ($fh, $lines) = @_;
+    local($_);
+    $lines = $T2H_THIS_SECTION unless $lines;
+    my $cnt = 0;
+    for (@$lines) 
+    {
+	$_ = l2h_FromHtml($_) if ($T2H_L2H);
+	if (/^$PROTECTTAG/o) {
+	    $_ = $tag2pro{$_};
+	} else {
+	    &unprotect_texi;
+	}
+	print $fh $_;
+	$cnt += split(/\W*\s+\W*/);
+    }
+    return $cnt;
+}
+
+sub protect_texi {
+    # protect @ { } ` '
+    s/\@\@/$;0/go;
+    s/\@\{/$;1/go;
+    s/\@\}/$;2/go;
+    s/\@\`/$;3/go;
+    s/\@\'/$;4/go;
+}
+
+sub protect_html {
+    local($what) = @_;
+    # protect & < >
+    $what =~ s/\&/\&\#38;/g;
+    $what =~ s/\</\&\#60;/g;
+    $what =~ s/\>/\&\#62;/g;
+    # restore anything in quotes
+    # this fixes my problem where I had:
+    # < IMG SRC="leftarrow.gif" ALT="<--" >  but what if I wanted &#60; in my ALT text ??
+    # maybe byte stuffing or some other technique should be used.
+    $what =~ s/\"([^\&]+)\&\#60;(.*)\"/"$1<$2"/g;
+    $what =~ s/\"([^\&]+)\&\#62;(.*)\"/"$1>$2"/g;
+    $what =~ s/\"([^\&]+)\&\#38;(.*)\"/"$1&$2"/g;
+    # but recognize some HTML things
+    $what =~ s/\&\#60;\/A\&\#62;/<\/A>/g;	      # </A>
+    $what =~ s/\&\#60;A ([^\&]+)\&\#62;/<A $1>/g;     # <A [^&]+>
+    $what =~ s/\&\#60;IMG ([^\&]+)\&\#62;/<IMG $1>/g; # <IMG [^&]+>
+    return($what);
+}
+
+sub unprotect_texi {
+    s/$;0/\@/go;
+    s/$;1/\{/go;
+    s/$;2/\}/go;
+    s/$;3/\`/go;
+    s/$;4/\'/go;
+}
+
+sub Unprotect_texi 
+{
+  local $_ = shift;
+  &unprotect_texi;
+  return($_);
+}
+
+sub unprotect_html {
+    local($what) = @_;
+    $what =~ s/\&\#38;/\&/g;
+    $what =~ s/\&\#60;/\</g;
+    $what =~ s/\&\#62;/\>/g;
+    return($what);
+}
+
+sub t2h_print_label
+{
+    my $fh = shift;
+    my $href = shift || $T2H_HREF{This};
+    $href =~ s/.*#(.*)$/$1/;
+    print $fh qq{<A NAME="$href"></A>\n};
+}
+
+##############################################################################
+
+	# These next few lines are legal in both Perl and nroff.
+
+.00 ;			# finish .ig
+ 
+'di			\" finish diversion--previous line must be blank
+.nr nl 0-1		\" fake up transition to first page again
+.nr % 0			\" start at page 1
+'; __END__ ############# From here on it's a standard manual page ############
+.so /usr/local/man/man1/texi2html.1
diff --git a/support/xcase.c b/support/xcase.c
new file mode 100644
index 0000000..527840d
--- /dev/null
+++ b/support/xcase.c
@@ -0,0 +1,98 @@
+/* xcase - change uppercase characters to lowercase or vice versa. */
+
+/* Copyright (C) 2008,2009 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <ctype.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "bashansi.h"
+#include <errno.h>
+
+#ifndef errno
+extern int errno;
+#endif
+
+extern int optind;
+
+#define LOWER	1
+#define UPPER	2
+
+int
+main(ac, av)
+int	ac;
+char	**av;
+{
+	int	c, x;
+	int	op;
+	FILE	*inf;
+
+	op = 0;
+	while ((c = getopt(ac, av, "lnu")) != EOF) {
+		switch (c) {
+		case 'n':
+			setbuf (stdout, (char *)NULL);
+			break;
+		case 'u':
+			op = UPPER;
+			break;
+		case 'l':
+			op = LOWER;
+			break;
+		default:
+			fprintf(stderr, "casemod: usage: casemod [-lnu] [file]\n");
+			exit(2);
+		}
+	}
+	av += optind;
+	ac -= optind;
+
+	if (av[0] && (av[0][0] != '-' || av[0][1])) {
+		inf = fopen(av[0], "r");
+		if (inf == 0) {
+			fprintf(stderr, "casemod: %s: cannot open: %s\n", av[0], strerror(errno));
+			exit(1);
+		}
+	} else
+		inf = stdin;
+
+	while ((c = getc(inf)) != EOF) {
+		switch (op) {
+		case UPPER:
+			x = islower(c) ? toupper(c) : c;
+			break;
+		case LOWER:
+			x = isupper(c) ? tolower(c) : c;
+			break;
+		default:
+			x = c;
+			break;
+		}
+		putchar(x);
+	}
+			
+	exit(0);
+}
diff --git a/support/xenix-link.sh b/support/xenix-link.sh
new file mode 100755
index 0000000..4d82e00
--- /dev/null
+++ b/support/xenix-link.sh
@@ -0,0 +1,84 @@
+:
+# link bash for Xenix under SCO Unix
+#
+# For xenix 2.2:
+#	CC="cc -xenix -lx" ./configure
+#	edit config.h:
+#		comment out the define for HAVE_DIRENT_H
+#		enable the define for HAVE_SYS_NDIR_H to 1
+#	make
+#	CC="cc -xenix -lx" ./link.sh
+#
+# For xenix 2.3:
+#	CC="cc -x2.3" ./configure
+#	make
+#	CC="cc -x2.3" ./link.sh
+
+# Copyright (C) 1989-2002 Free Software Foundation, Inc.
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+set -x
+
+rm -f bash
+
+if [ -z "$CC" ]
+then
+	if [ -f /unix ] && [ ! -f /xenix ]
+	then
+		CC="cc -xenix"
+	else
+		CC=gcc
+	fi
+fi
+
+try_dir=no
+try_23=no
+try_x=yes
+
+case "$CC" in
+*-ldir*) try_dir=yes ;;
+esac
+
+case "$CC" in
+*-lx*) try_23=no ; try_x=yes ;;
+esac
+
+case "$CC" in
+*-x2.3*|*-l2.3*) try_23=yes ; try_dir=yes ;;
+esac
+
+libs=
+try="socket"
+if [ $try_dir = yes ] ; then try="$try dir" ; fi
+if [ $try_23 = yes ] ; then try="$try 2.3" ; fi
+if [ $try_x = yes ] ; then try="$try x" ; fi
+for name in $try
+do
+	if [ -r "/lib/386/Slib${name}.a" ] ; then libs="$libs -l$name" ; fi
+done
+
+$CC -o bash shell.o eval.o y.tab.o \
+general.o make_cmd.o print_cmd.o dispose_cmd.o execute_cmd.o variables.o \
+copy_cmd.o error.o expr.o flags.o nojobs.o subst.o hashcmd.o hashlib.o \
+mailcheck.o trap.o input.o unwind_prot.o pathexp.o sig.o test.o \
+version.o alias.o array.o braces.o bracecomp.o bashhist.o bashline.o \
+getcwd.o siglist.o vprint.o oslib.o list.o stringlib.o locale.o \
+xmalloc.o builtins/libbuiltins.a \
+lib/readline/libreadline.a lib/readline/libhistory.a \
+-ltermcap lib/glob/libglob.a lib/tilde/libtilde.a lib/malloc/libmalloc.a \
+$libs
+
+ls -l bash
diff --git a/support/zecho.c b/support/zecho.c
new file mode 100644
index 0000000..f3a4fe0
--- /dev/null
+++ b/support/zecho.c
@@ -0,0 +1,43 @@
+/* zecho - bare-bones echo */
+
+/* Copyright (C) 1996-2002 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#if defined (HAVE_CONFIG_H)
+#  include  <config.h>
+#endif
+
+#include "bashansi.h"
+#include <stdio.h>
+
+int
+main(argc, argv)
+int	argc;
+char	**argv;
+{
+	argv++;
+
+	while (*argv) {
+		(void)printf("%s", *argv);
+		if (*++argv)
+			putchar(' ');
+	}
+
+	putchar('\n');
+	exit(0);
+}