From e73f2db7a181fd8abcf29a4b237847e8bec69f71 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <mail@daniel-baumann.ch>
Date: Fri, 6 Nov 2015 15:10:02 +0100
Subject: Adding upstream version 1.2.

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
---
 ChangeLog              |  10 ++-
 INSTALL                |  11 +++-
 Makefile.in            |  21 ++++---
 NEWS                   |  14 ++---
 README                 |   2 +-
 carg_parser.c          |   2 +-
 configure              |  37 +++++------
 decoder.c              | 103 ++++++++++++++++++------------
 decoder.h              | 168 ++++++++++++++++++++++---------------------------
 doc/lunzip.1           |   4 +-
 lunzip.h               |  87 +++++++++++--------------
 main.c                 | 161 +++++++++++++++++++----------------------------
 testsuite/check.sh     |  21 ++-----
 testsuite/test.txt.lz  | Bin 0 -> 11518 bytes
 testsuite/test_sync.lz | Bin 11658 -> 0 bytes
 testsuite/test_v0.lz   | Bin 11540 -> 0 bytes
 testsuite/test_v1.lz   | Bin 11548 -> 0 bytes
 17 files changed, 302 insertions(+), 339 deletions(-)
 create mode 100644 testsuite/test.txt.lz
 delete mode 100644 testsuite/test_sync.lz
 delete mode 100644 testsuite/test_v0.lz
 delete mode 100644 testsuite/test_v1.lz

diff --git a/ChangeLog b/ChangeLog
index b9e41e1..b08eb00 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2013-02-18  Antonio Diaz Diaz  <ant_diaz@teleline.es>
+
+	* Version 1.2 released.
+	* Decompression time has been reduced by 12%.
+	* Makefile.in: Added new target 'install-as-lzip'.
+	* Makefile.in: Added new target 'install-bin'.
+	* main.c: Use 'setmode' instead of '_setmode' on Windows and OS/2.
+
 2012-02-26  Antonio Diaz Diaz  <ant_diaz@teleline.es>
 
 	* Version 1.1 released.
@@ -15,7 +23,7 @@
 	* Created from the decompression code of clzip 1.1.
 
 
-Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 
 This file is a collection of facts, and thus it is not copyrightable,
 but just in case, you have unlimited permission to copy, distribute and
diff --git a/INSTALL b/INSTALL
index a745cc1..53f1df3 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,7 +1,7 @@
 Requirements
 ------------
 You will need a C compiler.
-I use gcc 4.3.5 and 3.3.6, but the code should compile with any
+I use gcc 4.7.2 and 3.3.6, but the code should compile with any
 standards compliant compiler.
 Gcc is available at http://gcc.gnu.org.
 
@@ -32,6 +32,13 @@ the main archive.
 5. Type 'make install' to install the program and any data files and
    documentation.
 
+   You can install only the program, the info manual or the man page
+   typing 'make install-bin', 'make install-info' or 'make install-man'
+   respectively.
+
+5a. Type 'make install-as-lzip' to install the program and any data
+    files and documentation, and link the program to the name 'lzip'.
+
 
 Another way
 -----------
@@ -50,7 +57,7 @@ After running 'configure', you can run 'make' and 'make install' as
 explained above.
 
 
-Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 
 This file is free documentation: you have unlimited permission to copy,
 distribute and modify it.
diff --git a/Makefile.in b/Makefile.in
index cde25d8..378f626 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -9,8 +9,8 @@ SHELL = /bin/sh
 objs = carg_parser.o decoder.o main.o
 
 
-.PHONY : all install install-info install-man install-strip \
-         uninstall uninstall-info uninstall-man \
+.PHONY : all install install-bin install-info install-man install-strip \
+         install-as-lzip uninstall uninstall-bin uninstall-info uninstall-man \
          doc info man check dist clean distclean
 
 all : $(progname)
@@ -52,14 +52,16 @@ Makefile : $(VPATH)/configure $(VPATH)/Makefile.in
 check : all
 	@$(VPATH)/testsuite/check.sh $(VPATH)/testsuite $(pkgversion)
 
-install : all install-man
+install : install-bin install-man
+
+install-bin : all
 	if [ ! -d "$(DESTDIR)$(bindir)" ] ; then $(INSTALL_DIR) "$(DESTDIR)$(bindir)" ; fi
 	$(INSTALL_PROGRAM) ./$(progname) "$(DESTDIR)$(bindir)/$(progname)"
 
 install-info :
 	if [ ! -d "$(DESTDIR)$(infodir)" ] ; then $(INSTALL_DIR) "$(DESTDIR)$(infodir)" ; fi
 	$(INSTALL_DATA) $(VPATH)/doc/$(pkgname).info "$(DESTDIR)$(infodir)/$(pkgname).info"
-	-install-info --info-dir="$(DESTDIR)$(infodir)" $(DESTDIR)$(infodir)/$(pkgname).info
+	-install-info --info-dir="$(DESTDIR)$(infodir)" "$(DESTDIR)$(infodir)/$(pkgname).info"
 
 install-man :
 	if [ ! -d "$(DESTDIR)$(mandir)/man1" ] ; then $(INSTALL_DIR) "$(DESTDIR)$(mandir)/man1" ; fi
@@ -68,7 +70,13 @@ install-man :
 install-strip : all
 	$(MAKE) INSTALL_PROGRAM='$(INSTALL_PROGRAM) -s' install
 
-uninstall : uninstall-man
+install-as-lzip : install
+	-rm -f "$(DESTDIR)$(bindir)/lzip"
+	cd "$(DESTDIR)$(bindir)" && ln -s $(progname) lzip
+
+uninstall : uninstall-bin uninstall-man
+
+uninstall-bin :
 	-rm -f "$(DESTDIR)$(bindir)/$(progname)"
 
 uninstall-info :
@@ -92,8 +100,7 @@ dist : doc
 	  $(DISTNAME)/doc/$(progname).1 \
 	  $(DISTNAME)/testsuite/check.sh \
 	  $(DISTNAME)/testsuite/test.txt \
-	  $(DISTNAME)/testsuite/test_sync.lz \
-	  $(DISTNAME)/testsuite/test_v[01].lz \
+	  $(DISTNAME)/testsuite/test.txt.lz \
 	  $(DISTNAME)/*.h \
 	  $(DISTNAME)/*.c
 	rm -f $(DISTNAME)
diff --git a/NEWS b/NEWS
index 3538962..b9ed0f4 100644
--- a/NEWS
+++ b/NEWS
@@ -1,13 +1,7 @@
-Changes in version 1.1:
+Changes in version 1.2:
 
-Print only one status line for each multimember file when only one "-v"
-is specified.
+Decompression time has been reduced by 12%.
 
-Inability to change output file attributes has been downgraded from
-error to warning.
+The target "install-as-lzip" has been added to the Makefile.
 
-Quote characters in messages have been changed as advised by GNU Coding
-Standards.
-
-Configure option "--datadir" has been renamed to "--datarootdir" to
-follow GNU Standards.
+The target "install-bin" has been added to the Makefile.
diff --git a/README b/README
index 67192db..217fb0a 100644
--- a/README
+++ b/README
@@ -35,7 +35,7 @@ few tens of KiB larger than the dictionary size used to compress that
 file.
 
 
-Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 
 This file is free documentation: you have unlimited permission to copy,
 distribute and modify it.
diff --git a/carg_parser.c b/carg_parser.c
index 326bd41..973bb7e 100644
--- a/carg_parser.c
+++ b/carg_parser.c
@@ -88,7 +88,7 @@ static char parse_long_option( struct Arg_parser * const ap,
                                const struct ap_Option options[],
                                int * const argindp )
   {
-  unsigned int len;
+  unsigned len;
   int index = -1;
   int i;
   char exact = 0, ambig = 0;
diff --git a/configure b/configure
index 4990706..703fe5d 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # configure script for Lunzip - Decompressor for lzip files
-# Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+# Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 #
 # This configure script is free software: you have unlimited permission
 # to copy, distribute and modify it.
@@ -8,7 +8,7 @@
 args=
 no_create=
 pkgname=lunzip
-pkgversion=1.1
+pkgversion=1.2
 progname=lunzip
 srctrigger=lunzip.h
 
@@ -22,11 +22,19 @@ bindir='$(exec_prefix)/bin'
 datarootdir='$(prefix)/share'
 infodir='$(datarootdir)/info'
 mandir='$(datarootdir)/man'
-CC=
+CC=gcc
 CPPFLAGS=
 CFLAGS='-Wall -W -O2'
 LDFLAGS=
 
+# checking whether we are using GNU C.
+if [ ! -x /bin/gcc ] &&
+   [ ! -x /usr/bin/gcc ] &&
+   [ ! -x /usr/local/bin/gcc ] ; then
+	CC=cc
+	CFLAGS='-W -O2'
+fi
+
 # Loop over all args
 while [ -n "$1" ] ; do
 
@@ -91,14 +99,14 @@ done
 srcdirtext=
 if [ -z "${srcdir}" ] ; then
 	srcdirtext="or . or .." ; srcdir=.
-	if [ ! -r ${srcdir}/${srctrigger} ] ; then srcdir=.. ; fi
-	if [ ! -r ${srcdir}/${srctrigger} ] ; then
+	if [ ! -r "${srcdir}/${srctrigger}" ] ; then srcdir=.. ; fi
+	if [ ! -r "${srcdir}/${srctrigger}" ] ; then
 		## the sed command below emulates the dirname command
 		srcdir=`echo $0 | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
 	fi
 fi
 
-if [ ! -r ${srcdir}/${srctrigger} ] ; then
+if [ ! -r "${srcdir}/${srctrigger}" ] ; then
 	exec 1>&2
 	echo
 	echo "configure: Can't find sources in ${srcdir} ${srcdirtext}"
@@ -107,18 +115,7 @@ if [ ! -r ${srcdir}/${srctrigger} ] ; then
 fi
 
 # Set srcdir to . if that's what it is.
-if [ "`pwd`" = "`cd ${srcdir} ; pwd`" ] ; then srcdir=. ; fi
-
-# checking whether we are using GNU C.
-if [ -z "${CC}" ] ; then		# Let the user override the test.
-	if [ -x /bin/gcc ] ||
-	   [ -x /usr/bin/gcc ] ||
-	   [ -x /usr/local/bin/gcc ] ; then
-		CC="gcc"
-	else
-		CC="cc"
-	fi
-fi
+if [ "`pwd`" = "`cd "${srcdir}" ; pwd`" ] ; then srcdir=. ; fi
 
 echo
 if [ -z "${no_create}" ] ; then
@@ -152,7 +149,7 @@ echo "LDFLAGS = ${LDFLAGS}"
 rm -f Makefile
 cat > Makefile << EOF
 # Makefile for Lunzip - Decompressor for lzip files
-# Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+# Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 # This file was generated automatically by configure. Do not edit.
 #
 # This Makefile is free software: you have unlimited permission
@@ -173,6 +170,6 @@ CPPFLAGS = ${CPPFLAGS}
 CFLAGS = ${CFLAGS}
 LDFLAGS = ${LDFLAGS}
 EOF
-cat ${srcdir}/Makefile.in >> Makefile
+cat "${srcdir}/Makefile.in" >> Makefile
 
 echo "OK. Now you can run make."
diff --git a/decoder.c b/decoder.c
index d09a143..25f7c73 100644
--- a/decoder.c
+++ b/decoder.c
@@ -1,5 +1,5 @@
 /*  Lunzip - Decompressor for lzip files
-    Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+    Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 
     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
@@ -32,23 +32,40 @@
 CRC32 crc32;
 
 
+void Pp_show_msg( struct Pretty_print * const pp, const char * const msg )
+  {
+  if( pp->verbosity >= 0 )
+    {
+    if( pp->first_post )
+      {
+      int i, len;
+      pp->first_post = false;
+      fprintf( stderr, "  %s: ", pp->name );
+      len = pp->longest_name - strlen( pp->name );
+      for( i = 0; i < len; ++i ) fprintf( stderr, " " );
+      if( !msg ) fflush( stderr );
+      }
+    if( msg ) fprintf( stderr, "%s.\n", msg );
+    }
+  }
+
+
 /* Returns the number of bytes really read.
    If (returned value < size) and (errno == 0), means EOF was reached.
 */
 static int readblock( const int fd, uint8_t * const buf, const int size )
   {
   int rest = size;
-  while( true )
+  errno = 0;
+  while( rest > 0 )
     {
-    int n;
-    errno = 0;
-    if( rest <= 0 ) break;
-    n = read( fd, buf + size - rest, rest );
+    const int n = read( fd, buf + size - rest, rest );
     if( n > 0 ) rest -= n;
-    else if( n == 0 ) break;
+    else if( n == 0 ) break;				/* EOF */
     else if( errno != EINTR && errno != EAGAIN ) break;
+    errno = 0;
     }
-  return ( rest > 0 ) ? size - rest : size;
+  return size - rest;
   }
 
 
@@ -58,16 +75,15 @@ static int readblock( const int fd, uint8_t * const buf, const int size )
 static int writeblock( const int fd, const uint8_t * const buf, const int size )
   {
   int rest = size;
-  while( true )
+  errno = 0;
+  while( rest > 0 )
     {
-    int n;
-    errno = 0;
-    if( rest <= 0 ) break;
-    n = write( fd, buf + size - rest, rest );
+    const int n = write( fd, buf + size - rest, rest );
     if( n > 0 ) rest -= n;
     else if( n < 0 && errno != EINTR && errno != EAGAIN ) break;
+    errno = 0;
     }
-  return ( rest > 0 ) ? size - rest : size;
+  return size - rest;
   }
 
 
@@ -107,7 +123,7 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
   {
   File_trailer trailer;
   const int trailer_size = Ft_versioned_size( decoder->member_version );
-  const long long member_size =
+  const unsigned long long member_size =
     Rd_member_position( decoder->range_decoder ) + trailer_size;
   bool error = false;
 
@@ -136,8 +152,7 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
       {
       Pp_show_msg( pp, 0 );
       fprintf( stderr, "CRC mismatch; trailer says %08X, data CRC is %08X.\n",
-               (unsigned int)Ft_get_data_crc( trailer ),
-               (unsigned int)LZd_crc( decoder ) );
+               Ft_get_data_crc( trailer ), LZd_crc( decoder ) );
       }
     }
   if( Ft_get_data_size( trailer ) != LZd_data_position( decoder ) )
@@ -146,7 +161,7 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
     if( pp->verbosity >= 0 )
       {
       Pp_show_msg( pp, 0 );
-      fprintf( stderr, "Data size mismatch; trailer says %lld, data size is %lld (0x%llX).\n",
+      fprintf( stderr, "Data size mismatch; trailer says %llu, data size is %llu (0x%llX).\n",
                Ft_get_data_size( trailer ), LZd_data_position( decoder ), LZd_data_position( decoder ) );
       }
     }
@@ -156,7 +171,7 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
     if( pp->verbosity >= 0 )
       {
       Pp_show_msg( pp, 0 );
-      fprintf( stderr, "Member size mismatch; trailer says %lld, member size is %lld (0x%llX).\n",
+      fprintf( stderr, "Member size mismatch; trailer says %llu, member size is %llu (0x%llX).\n",
                Ft_get_member_size( trailer ), member_size, member_size );
       }
     }
@@ -166,8 +181,8 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
              ( 8.0 * member_size ) / LZd_data_position( decoder ),
              100.0 * ( 1.0 - ( (double)member_size / LZd_data_position( decoder ) ) ) );
   if( !error && pp->verbosity >= 4 )
-    fprintf( stderr, "data CRC %08X, data size %9lld, member size %8lld.  ",
-             (unsigned int)Ft_get_data_crc( trailer ),
+    fprintf( stderr, "data CRC %08X, data size %9llu, member size %8llu.  ",
+             Ft_get_data_crc( trailer ),
              Ft_get_data_size( trailer ), Ft_get_member_size( trailer ) );
   return !error;
   }
@@ -178,10 +193,11 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
 int LZd_decode_member( struct LZ_decoder * const decoder,
                        struct Pretty_print * const pp )
   {
-  unsigned int rep0 = 0;	/* rep[0-3] latest four distances */
-  unsigned int rep1 = 0;	/* used for efficient coding of */
-  unsigned int rep2 = 0;	/* repeated distances */
-  unsigned int rep3 = 0;
+  unsigned rep0 = 0;		/* rep[0-3] latest four distances */
+  unsigned rep1 = 0;		/* used for efficient coding of */
+  unsigned rep2 = 0;		/* repeated distances */
+  unsigned rep3 = 0;
+
   State state = 0;
   Rd_load( decoder->range_decoder );
 
@@ -192,12 +208,17 @@ int LZd_decode_member( struct LZ_decoder * const decoder,
       {
       const uint8_t prev_byte = LZd_get_prev_byte( decoder );
       if( St_is_char( state ) )
-        LZd_put_byte( decoder, Lid_decode( &decoder->literal_decoder,
-          decoder->range_decoder, prev_byte ) );
+        {
+        state -= ( state < 4 ) ? state : 3;
+        LZd_put_byte( decoder, Rd_decode_tree( decoder->range_decoder,
+                      decoder->bm_literal[get_lit_state(prev_byte)], 8 ) );
+        }
       else
-        LZd_put_byte( decoder, Lid_decode_matched( &decoder->literal_decoder,
-          decoder->range_decoder, prev_byte, LZd_get_byte( decoder, rep0 ) ) );
-      St_set_char( &state );
+        {
+        state -= ( state < 10 ) ? 3 : 6;
+        LZd_put_byte( decoder, Rd_decode_matched( decoder->range_decoder,
+          decoder->bm_literal[get_lit_state(prev_byte)], LZd_get_byte( decoder, rep0 ) ) );
+        }
       }
     else
       {
@@ -207,7 +228,7 @@ int LZd_decode_member( struct LZ_decoder * const decoder,
         len = 0;
         if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep0[state] ) == 1 )
           {
-          unsigned int distance;
+          unsigned distance;
           if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep1[state] ) == 0 )
             distance = rep1;
           else
@@ -223,31 +244,33 @@ int LZd_decode_member( struct LZ_decoder * const decoder,
         else
           {
           if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_len[state][pos_state] ) == 0 )
-            { St_set_short_rep( &state ); len = 1; }
+            { state = St_set_short_rep( state ); len = 1; }
           }
         if( len == 0 )
           {
-          St_set_rep( &state );
+          state = St_set_rep( state );
           len = min_match_len + Led_decode( &decoder->rep_match_len_decoder, decoder->range_decoder, pos_state );
           }
         }
       else
         {
         int dis_slot;
-        const unsigned int rep0_saved = rep0;
+        const unsigned rep0_saved = rep0;
         len = min_match_len + Led_decode( &decoder->len_decoder, decoder->range_decoder, pos_state );
-        dis_slot = Rd_decode_tree( decoder->range_decoder, decoder->bm_dis_slot[get_dis_state(len)], dis_slot_bits );
+        dis_slot = Rd_decode_tree6( decoder->range_decoder, decoder->bm_dis_slot[get_dis_state(len)] );
         if( dis_slot < start_dis_model ) rep0 = dis_slot;
         else
           {
           const int direct_bits = ( dis_slot >> 1 ) - 1;
           rep0 = ( 2 | ( dis_slot & 1 ) ) << direct_bits;
           if( dis_slot < end_dis_model )
-            rep0 += Rd_decode_tree_reversed( decoder->range_decoder, decoder->bm_dis + rep0 - dis_slot, direct_bits );
+            rep0 += Rd_decode_tree_reversed( decoder->range_decoder,
+                                             decoder->bm_dis + rep0 - dis_slot - 1,
+                                             direct_bits );
           else
             {
             rep0 += Rd_decode( decoder->range_decoder, direct_bits - dis_align_bits ) << dis_align_bits;
-            rep0 += Rd_decode_tree_reversed( decoder->range_decoder, decoder->bm_align, dis_align_bits );
+            rep0 += Rd_decode_tree_reversed4( decoder->range_decoder, decoder->bm_align );
             if( rep0 == 0xFFFFFFFFU )		/* Marker found */
               {
               rep0 = rep0_saved;
@@ -271,9 +294,9 @@ int LZd_decode_member( struct LZ_decoder * const decoder,
             }
           }
         rep3 = rep2; rep2 = rep1; rep1 = rep0_saved;
-        St_set_match( &state );
-        if( rep0 >= (unsigned int)decoder->dictionary_size ||
-            ( rep0 >= (unsigned int)decoder->pos && !decoder->partial_data_pos ) )
+        state = St_set_match( state );
+        if( rep0 >= (unsigned)decoder->dictionary_size ||
+            ( rep0 >= (unsigned)decoder->pos && !decoder->partial_data_pos ) )
           { LZd_flush_data( decoder ); return 1; }
         }
       LZd_copy_block( decoder, rep0, len );
diff --git a/decoder.h b/decoder.h
index 65174b5..29b164a 100644
--- a/decoder.h
+++ b/decoder.h
@@ -1,5 +1,5 @@
 /*  Lunzip - Decompressor for lzip files
-    Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+    Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 
     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
@@ -19,7 +19,7 @@ enum { rd_buffer_size = 16384 };
 
 struct Range_decoder
   {
-  long long partial_member_pos;
+  unsigned long long partial_member_pos;
   uint8_t * buffer;		/* input buffer */
   int pos;			/* current pos in buffer */
   int stream_pos;		/* when reached, a new block must be read */
@@ -51,7 +51,8 @@ static inline void Rd_free( struct Range_decoder * const rdec )
 static inline bool Rd_finished( struct Range_decoder * const rdec )
   { return rdec->pos >= rdec->stream_pos && !Rd_read_block( rdec ); }
 
-static inline long long Rd_member_position( const struct Range_decoder * const rdec )
+static inline unsigned long long
+Rd_member_position( const struct Range_decoder * const rdec )
   { return rdec->partial_member_pos + rdec->pos; }
 
 static inline void Rd_reset_member_position( struct Range_decoder * const rdec )
@@ -59,7 +60,7 @@ static inline void Rd_reset_member_position( struct Range_decoder * const rdec )
 
 static inline uint8_t Rd_get_byte( struct Range_decoder * const rdec )
   {
-  if( Rd_finished( rdec ) ) return 0x55;	/* make code != 0 */
+  if( Rd_finished( rdec ) ) return 0xAA;	/* make code != 0 */
   return rdec->buffer[rdec->pos++];
   }
 
@@ -74,16 +75,16 @@ static inline int Rd_read_data( struct Range_decoder * const rdec,
     rdec->pos += rd;
     rest -= rd;
     }
-  return ( rest > 0 ) ? size - rest : size;
+  return size - rest;
   }
 
 static inline void Rd_load( struct Range_decoder * const rdec )
   {
   int i;
   rdec->code = 0;
-  rdec->range = 0xFFFFFFFFU;
   for( i = 0; i < 5; ++i )
     rdec->code = (rdec->code << 8) | Rd_get_byte( rdec );
+  rdec->range = 0xFFFFFFFFU;
   }
 
 static inline void Rd_normalize( struct Range_decoder * const rdec )
@@ -102,20 +103,15 @@ static inline int Rd_decode( struct Range_decoder * const rdec,
   int i;
   for( i = num_bits; i > 0; --i )
     {
-    symbol <<= 1;
-    if( rdec->range <= 0x00FFFFFFU )
-      {
-      rdec->range <<= 7;
-      rdec->code = (rdec->code << 8) | Rd_get_byte( rdec );
-      if( rdec->code >= rdec->range )
-        { rdec->code -= rdec->range; symbol |= 1; }
-      }
-    else
-      {
-      rdec->range >>= 1;
-      if( rdec->code >= rdec->range )
-        { rdec->code -= rdec->range; symbol |= 1; }
-      }
+    uint32_t mask;
+    Rd_normalize( rdec );
+    rdec->range >>= 1;
+/*    symbol <<= 1; */
+/*    if( rdec->code >= rdec->range ) { rdec->code -= rdec->range; symbol |= 1; } */
+    mask = 0U - (rdec->code < rdec->range);
+    rdec->code -= rdec->range;
+    rdec->code += rdec->range & mask;
+    symbol = (symbol << 1) + (mask + 1);
     }
   return symbol;
   }
@@ -151,6 +147,19 @@ static inline int Rd_decode_tree( struct Range_decoder * const rdec,
   return model - (1 << num_bits);
   }
 
+static inline int Rd_decode_tree6( struct Range_decoder * const rdec,
+                                   Bit_model bm[] )
+  {
+  int model = 1;
+  model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
+  model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
+  model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
+  model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
+  model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
+  model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
+  return model - (1 << 6);
+  }
+
 static inline int Rd_decode_tree_reversed( struct Range_decoder * const rdec,
                                            Bit_model bm[], const int num_bits )
   {
@@ -159,32 +168,49 @@ static inline int Rd_decode_tree_reversed( struct Range_decoder * const rdec,
   int i;
   for( i = 0; i < num_bits; ++i )
     {
-    const int bit = Rd_decode_bit( rdec, &bm[model] );
+    const bool bit = Rd_decode_bit( rdec, &bm[model] );
     model <<= 1;
-    if( bit ) { model |= 1; symbol |= (1 << i); }
+    if( bit ) { ++model; symbol |= (1 << i); }
     }
   return symbol;
   }
 
+static inline int Rd_decode_tree_reversed4( struct Range_decoder * const rdec,
+                                            Bit_model bm[] )
+  {
+  int model = 1;
+  int symbol = 0;
+  int bit = Rd_decode_bit( rdec, &bm[model] );
+  model = (model << 1) + bit; symbol |= bit;
+  bit = Rd_decode_bit( rdec, &bm[model] );
+  model = (model << 1) + bit; symbol |= (bit << 1);
+  bit = Rd_decode_bit( rdec, &bm[model] );
+  model = (model << 1) + bit; symbol |= (bit << 2);
+  if( Rd_decode_bit( rdec, &bm[model] ) ) symbol |= 8;
+  return symbol;
+  }
+
 static inline int Rd_decode_matched( struct Range_decoder * const rdec,
-                                     Bit_model bm[], const int match_byte )
+                                     Bit_model bm[], int match_byte )
   {
   Bit_model * const bm1 = bm + 0x100;
   int symbol = 1;
   int i;
   for( i = 7; i >= 0; --i )
     {
-    const int match_bit = ( match_byte >> i ) & 1;
-    const int bit = Rd_decode_bit( rdec, &bm1[(match_bit<<8)+symbol] );
+    int match_bit, bit;
+    match_byte <<= 1;
+    match_bit = match_byte & 0x100;
+    bit = Rd_decode_bit( rdec, &bm1[match_bit+symbol] );
     symbol = ( symbol << 1 ) | bit;
-    if( match_bit != bit )
+    if( match_bit != bit << 8 )
       {
-      while( --i >= 0 )
+      while( symbol < 0x100 )
         symbol = ( symbol << 1 ) | Rd_decode_bit( rdec, &bm[symbol] );
       break;
       }
     }
-  return symbol & 0xFF;
+  return symbol - 0x100;
   }
 
 
@@ -199,17 +225,11 @@ struct Len_decoder
 
 static inline void Led_init( struct Len_decoder * const len_decoder )
   {
-  int i, j;
   Bm_init( &len_decoder->choice1 );
   Bm_init( &len_decoder->choice2 );
-  for( i = 0; i < pos_states; ++i )
-    for( j = 0; j < len_low_symbols; ++j )
-      Bm_init( &len_decoder->bm_low[i][j] );
-  for( i = 0; i < pos_states; ++i )
-    for( j = 0; j < len_mid_symbols; ++j )
-      Bm_init( &len_decoder->bm_mid[i][j] );
-  for( i = 0; i < len_high_symbols; ++i )
-    Bm_init( &len_decoder->bm_high[i] );
+  Bm_array_init( len_decoder->bm_low[0], pos_states * len_low_symbols );
+  Bm_array_init( len_decoder->bm_mid[0], pos_states * len_mid_symbols );
+  Bm_array_init( len_decoder->bm_high, len_high_symbols );
   }
 
 static inline int Led_decode( struct Len_decoder * const len_decoder,
@@ -226,37 +246,9 @@ static inline int Led_decode( struct Len_decoder * const len_decoder,
   }
 
 
-struct Literal_decoder
-  {
-  Bit_model bm_literal[1<<literal_context_bits][0x300];
-  };
-
-static inline void Lid_init( struct Literal_decoder * const lidec )
-  {
-  int i, j;
-  for( i = 0; i < 1<<literal_context_bits; ++i )
-    for( j = 0; j < 0x300; ++j )
-      Bm_init( &lidec->bm_literal[i][j] );
-  }
-
-static inline int Lid_state( const uint8_t prev_byte )
-  { return ( prev_byte >> ( 8 - literal_context_bits ) ); }
-
-static inline uint8_t Lid_decode( struct Literal_decoder * const lidec,
-                                  struct Range_decoder * const rdec,
-                                  const uint8_t prev_byte )
-  { return Rd_decode_tree( rdec, lidec->bm_literal[Lid_state(prev_byte)], 8 ); }
-
-static inline uint8_t Lid_decode_matched( struct Literal_decoder * const lidec,
-                                          struct Range_decoder * const rdec,
-                                          const uint8_t prev_byte,
-                                          const uint8_t match_byte )
-  { return Rd_decode_matched( rdec, lidec->bm_literal[Lid_state(prev_byte)], match_byte ); }
-
-
 struct LZ_decoder
   {
-  long long partial_data_pos;
+  unsigned long long partial_data_pos;
   int dictionary_size;
   int buffer_size;
   uint8_t * buffer;		/* output buffer */
@@ -266,6 +258,7 @@ struct LZ_decoder
   int outfd;			/* output file descriptor */
   int member_version;
 
+  Bit_model bm_literal[1<<literal_context_bits][0x300];
   Bit_model bm_match[states][pos_states];
   Bit_model bm_rep[states];
   Bit_model bm_rep0[states];
@@ -273,13 +266,12 @@ struct LZ_decoder
   Bit_model bm_rep2[states];
   Bit_model bm_len[states][pos_states];
   Bit_model bm_dis_slot[max_dis_states][1<<dis_slot_bits];
-  Bit_model bm_dis[modeled_distances-end_dis_model+1];
+  Bit_model bm_dis[modeled_distances-end_dis_model];
   Bit_model bm_align[dis_align_size];
 
   struct Range_decoder * range_decoder;
   struct Len_decoder len_decoder;
   struct Len_decoder rep_match_len_decoder;
-  struct Literal_decoder literal_decoder;
   };
 
 void LZd_flush_data( struct LZ_decoder * const decoder );
@@ -315,12 +307,12 @@ static inline void LZd_copy_block( struct LZ_decoder * const decoder,
   int i = decoder->pos - distance - 1;
   if( i < 0 ) i += decoder->buffer_size;
   if( len < decoder->buffer_size - max( decoder->pos, i ) &&
-      len <= abs( decoder->pos - i ) )
+      len <= abs( decoder->pos - i ) )		/* no wrap, no overlap */
     {
     memcpy( decoder->buffer + decoder->pos, decoder->buffer + i, len );
     decoder->pos += len;
     }
-  else for( ; len > 0 ; --len )
+  else for( ; len > 0; --len )
     {
     decoder->buffer[decoder->pos] = decoder->buffer[i];
     if( ++decoder->pos >= decoder->buffer_size ) LZd_flush_data( decoder );
@@ -332,7 +324,6 @@ static inline bool LZd_init( struct LZ_decoder * const decoder,
                              const File_header header,
                              struct Range_decoder * const rdec, const int ofd )
   {
-  int i, j;
   decoder->partial_data_pos = 0;
   decoder->dictionary_size = Fh_get_dictionary_size( header );
   decoder->buffer_size = max( 65536, decoder->dictionary_size );
@@ -344,30 +335,20 @@ static inline bool LZd_init( struct LZ_decoder * const decoder,
   decoder->outfd = ofd;
   decoder->member_version = Fh_version( header );
 
-  for( i = 0; i < states; ++i )
-    {
-    for( j = 0; j < pos_states; ++j )
-      {
-      Bm_init( &decoder->bm_match[i][j] );
-      Bm_init( &decoder->bm_len[i][j] );
-      }
-    Bm_init( &decoder->bm_rep[i] );
-    Bm_init( &decoder->bm_rep0[i] );
-    Bm_init( &decoder->bm_rep1[i] );
-    Bm_init( &decoder->bm_rep2[i] );
-    }
-  for( i = 0; i < max_dis_states; ++i )
-    for( j = 0; j < 1<<dis_slot_bits; ++j )
-      Bm_init( &decoder->bm_dis_slot[i][j] );
-  for( i = 0; i < modeled_distances-end_dis_model+1; ++i )
-    Bm_init( &decoder->bm_dis[i] );
-  for( i = 0; i < dis_align_size; ++i )
-    Bm_init( &decoder->bm_align[i] );
+  Bm_array_init( decoder->bm_literal[0], (1 << literal_context_bits) * 0x300 );
+  Bm_array_init( decoder->bm_match[0], states * pos_states );
+  Bm_array_init( decoder->bm_rep, states );
+  Bm_array_init( decoder->bm_rep0, states );
+  Bm_array_init( decoder->bm_rep1, states );
+  Bm_array_init( decoder->bm_rep2, states );
+  Bm_array_init( decoder->bm_len[0], states * pos_states );
+  Bm_array_init( decoder->bm_dis_slot[0], max_dis_states * (1 << dis_slot_bits) );
+  Bm_array_init( decoder->bm_dis, modeled_distances - end_dis_model );
+  Bm_array_init( decoder->bm_align, dis_align_size );
 
   decoder->range_decoder = rdec;
   Led_init( &decoder->len_decoder );
   Led_init( &decoder->rep_match_len_decoder );
-  Lid_init( &decoder->literal_decoder );
   decoder->buffer[decoder->buffer_size-1] = 0;	/* prev_byte of first_byte */
   return true;
   }
@@ -375,10 +356,11 @@ static inline bool LZd_init( struct LZ_decoder * const decoder,
 static inline void LZd_free( struct LZ_decoder * const decoder )
   { free( decoder->buffer ); }
 
-static inline uint32_t LZd_crc( const struct LZ_decoder * const decoder )
+static inline unsigned LZd_crc( const struct LZ_decoder * const decoder )
   { return decoder->crc ^ 0xFFFFFFFFU; }
 
-static inline long long LZd_data_position( const struct LZ_decoder * const decoder )
+static inline unsigned long long
+LZd_data_position( const struct LZ_decoder * const decoder )
   { return decoder->partial_data_pos + decoder->pos; }
 
 int LZd_decode_member( struct LZ_decoder * const decoder,
diff --git a/doc/lunzip.1 b/doc/lunzip.1
index ac3625d..820aa8b 100644
--- a/doc/lunzip.1
+++ b/doc/lunzip.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.37.1.
-.TH LUNZIP "1" "February 2012" "Lunzip 1.1" "User Commands"
+.TH LUNZIP "1" "February 2013" "Lunzip 1.2" "User Commands"
 .SH NAME
 Lunzip \- small decompressor for lzip files
 .SH SYNOPSIS
@@ -46,7 +46,7 @@ Report bugs to lzip\-bug@nongnu.org
 .br
 Lunzip home page: http://www.nongnu.org/lzip/lunzip.html
 .SH COPYRIGHT
-Copyright \(co 2012 Antonio Diaz Diaz.
+Copyright \(co 2013 Antonio Diaz Diaz.
 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
 .br
 This is free software: you are free to change and redistribute it.
diff --git a/lunzip.h b/lunzip.h
index e9a9ea2..4437ec6 100644
--- a/lunzip.h
+++ b/lunzip.h
@@ -1,5 +1,5 @@
 /*  Lunzip - Decompressor for lzip files
-    Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+    Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 
     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
@@ -22,39 +22,26 @@
   #define min(x,y) ((x) <= (y) ? (x) : (y))
 #endif
 
-typedef unsigned char State;
+typedef int State;
 
 enum { states = 12 };
 
 static inline bool St_is_char( const State st ) { return st < 7; }
 
-static inline void St_set_char( State * const st )
+static inline State St_set_char( const State st )
   {
-  static const unsigned char next[states] =
-    { 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 4, 5 };
-  *st = next[*st];
+  static const State next[states] = { 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 4, 5 };
+  return next[st];
   }
 
-static inline void St_set_match( State * const st )
-  {
-  static const unsigned char next[states] =
-    { 7, 7, 7, 7, 7, 7, 7, 10, 10, 10, 10, 10 };
-  *st = next[*st];
-  }
+static inline State St_set_match( const State st )
+  { return ( ( st < 7 ) ? 7 : 10 ); }
 
-static inline void St_set_rep( State * const st )
-  {
-  static const unsigned char next[states] =
-    { 8, 8, 8, 8, 8, 8, 8, 11, 11, 11, 11, 11 };
-  *st = next[*st];
-  }
+static inline State St_set_rep( const State st )
+  { return ( ( st < 7 ) ? 8 : 11 ); }
 
-static inline void St_set_short_rep( State * const st )
-  {
-  static const unsigned char next[states] =
-    { 9, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11 };
-  *st = next[*st];
-  }
+static inline State St_set_short_rep( const State st )
+  { return ( ( st < 7 ) ? 9 : 11 ); }
 
 
 enum {
@@ -88,23 +75,25 @@ enum {
 
   max_dis_states = 4 };
 
-static inline int get_dis_state( int len )
-  {
-  len -= min_match_len;
-  if( len >= max_dis_states ) len = max_dis_states - 1;
-  return len;
-  }
+static inline int get_dis_state( const int len )
+  { return min( len - min_match_len, max_dis_states - 1 ); }
+
+static inline int get_lit_state( const uint8_t prev_byte )
+  { return ( prev_byte >> ( 8 - literal_context_bits ) ); }
 
 
 enum { bit_model_move_bits = 5,
        bit_model_total_bits = 11,
        bit_model_total = 1 << bit_model_total_bits };
 
-typedef unsigned int Bit_model;
+typedef int Bit_model;
 
 static inline void Bm_init( Bit_model * const probability )
   { *probability = bit_model_total / 2; }
 
+static inline void Bm_array_init( Bit_model * const p, const int size )
+  { int i = 0; while( i < size ) p[i++] = bit_model_total / 2; }
+
 
 struct Pretty_print
   {
@@ -121,7 +110,7 @@ void Pp_init( struct Pretty_print * const pp, const char * const filenames[],
 static inline void Pp_set_name( struct Pretty_print * const pp,
                                 const char * const filename )
   {
-  if( filename && filename[0] && strcmp( filename, "-" ) )
+  if( filename && filename[0] && strcmp( filename, "-" ) != 0 )
     pp->name = filename;
   else pp->name = pp->stdin_name;
   pp->first_post = true;
@@ -136,12 +125,12 @@ typedef uint32_t CRC32[256];	/* Table of CRCs of all 8-bit messages. */
 
 extern CRC32 crc32;
 
-static inline void CRC32_init()
+static inline void CRC32_init( void )
   {
-  unsigned int n;
+  unsigned n;
   for( n = 0; n < 256; ++n )
     {
-    unsigned int c = n;
+    unsigned c = n;
     int k;
     for( k = 0; k < 8; ++k )
       { if( c & 1 ) c = 0xEDB88320U ^ ( c >> 1 ); else c >>= 1; }
@@ -151,6 +140,7 @@ static inline void CRC32_init()
 
 static inline void CRC32_update_byte( uint32_t * crc, const uint8_t byte )
   { *crc = crc32[(*crc^byte)&0xFF] ^ ( *crc >> 8 ); }
+
 static inline void CRC32_update_buf( uint32_t * crc, const uint8_t * const buffer,
                                      const int size )
   {
@@ -160,16 +150,15 @@ static inline void CRC32_update_buf( uint32_t * crc, const uint8_t * const buffe
   }
 
 
-static inline int real_bits( const unsigned int value )
+static inline int real_bits( unsigned value )
   {
-  int bits = 0, i = 1;
-  unsigned int mask = 1;
-  for( ; mask > 0; ++i, mask <<= 1 ) if( value & mask ) bits = i;
+  int bits = 0;
+  while( value > 0 ) { value >>= 1; ++bits; }
   return bits;
   }
 
 
-static const uint8_t magic_string[4] = { 'L', 'Z', 'I', 'P' };
+static const uint8_t magic_string[4] = { 0x4C, 0x5A, 0x49, 0x50 }; /* "LZIP" */
 
 typedef uint8_t File_header[6];		/* 0-3 magic bytes */
 					/*   4 version */
@@ -226,43 +215,43 @@ enum { Ft_size = 20 };
 static inline int Ft_versioned_size( const int version )
   { return ( ( version >= 1 ) ? 20 : 12 ); }
 
-static inline uint32_t Ft_get_data_crc( const File_trailer data )
+static inline unsigned Ft_get_data_crc( const File_trailer data )
   {
-  uint32_t tmp = 0;
+  unsigned tmp = 0;
   int i;
   for( i = 3; i >= 0; --i ) { tmp <<= 8; tmp += data[i]; }
   return tmp;
   }
 
-static inline void Ft_set_data_crc( File_trailer data, uint32_t crc )
+static inline void Ft_set_data_crc( File_trailer data, unsigned crc )
   {
   int i;
   for( i = 0; i <= 3; ++i ) { data[i] = (uint8_t)crc; crc >>= 8; }
   }
 
-static inline long long Ft_get_data_size( const File_trailer data )
+static inline unsigned long long Ft_get_data_size( const File_trailer data )
   {
-  long long tmp = 0;
+  unsigned long long tmp = 0;
   int i;
   for( i = 11; i >= 4; --i ) { tmp <<= 8; tmp += data[i]; }
   return tmp;
   }
 
-static inline void Ft_set_data_size( File_trailer data, long long sz )
+static inline void Ft_set_data_size( File_trailer data, unsigned long long sz )
   {
   int i;
   for( i = 4; i <= 11; ++i ) { data[i] = (uint8_t)sz; sz >>= 8; }
   }
 
-static inline long long Ft_get_member_size( const File_trailer data )
+static inline unsigned long long Ft_get_member_size( const File_trailer data )
   {
-  long long tmp = 0;
+  unsigned long long tmp = 0;
   int i;
   for( i = 19; i >= 12; --i ) { tmp <<= 8; tmp += data[i]; }
   return tmp;
   }
 
-static inline void Ft_set_member_size( File_trailer data, long long sz )
+static inline void Ft_set_member_size( File_trailer data, unsigned long long sz )
   {
   int i;
   for( i = 12; i <= 19; ++i ) { data[i] = (uint8_t)sz; sz >>= 8; }
diff --git a/main.c b/main.c
index 97218de..9ba2280 100644
--- a/main.c
+++ b/main.c
@@ -1,5 +1,5 @@
 /*  Lunzip - Decompressor for lzip files
-    Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+    Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 
     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
@@ -58,12 +58,10 @@
 #error "Environments where CHAR_BIT != 8 are not supported."
 #endif
 
-long long int llabs( long long int number );
-
 
 const char * const Program_name = "Lunzip";
 const char * const program_name = "lunzip";
-const char * const program_year = "2012";
+const char * const program_year = "2013";
 const char * invocation_name = 0;
 
 #ifdef O_BINARY
@@ -86,21 +84,7 @@ mode_t outfd_mode = S_IRUSR | S_IWUSR;
 bool delete_output_on_interrupt = false;
 
 
-/* assure at least a minimum size for buffer 'buf' */
-static void * resize_buffer( void * buf, const int min_size )
-  {
-  if( buf ) buf = realloc( buf, min_size );
-  else buf = malloc( min_size );
-  if( !buf )
-    {
-    show_error( "Not enough memory.", 0, false );
-    cleanup_and_fail( 1 );
-    }
-  return buf;
-  }
-
-
-static void show_help()
+static void show_help( void )
   {
   printf( "%s - Decompressor for lzip files.\n", Program_name );
   printf( "\nUsage: %s [options] [files]\n", invocation_name );
@@ -122,7 +106,7 @@ static void show_help()
   }
 
 
-static void show_version()
+static void show_version( void )
   {
   printf( "%s %s\n", Program_name, PROGVERSION );
   printf( "Copyright (C) %s Antonio Diaz Diaz.\n", program_year );
@@ -132,21 +116,35 @@ static void show_version()
   }
 
 
-static const char * format_num( long long num )
+void show_header( const File_header header )
   {
   const char * const prefix[8] =
     { "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" };
-  enum { buf_size = 16, factor = 1024 };
-  static char buf[buf_size];
-  const char *p = "";
+  enum { factor = 1024 };
+  const char * p = "";
+  const char * np = "  ";
+  unsigned num = Fh_get_dictionary_size( header ), i;
   bool exact = ( num % factor == 0 );
-  int i;
 
-  for( i = 0; i < 8 && ( llabs( num ) > 9999 ||
-                         ( exact && llabs( num ) >= factor ) ); ++i )
-    { num /= factor; if( num % factor != 0 ) exact = false; p = prefix[i]; }
-  snprintf( buf, buf_size, "%lld %s", num, p );
-  return buf;
+  for( i = 0; i < 8 && ( num > 9999 || ( exact && num >= factor ) ); ++i )
+    { num /= factor; if( num % factor != 0 ) exact = false;
+      p = prefix[i]; np = ""; }
+  fprintf( stderr, "version %d, dictionary size %s%4u %sB.  ",
+           Fh_version( header ), np, num, p );
+  }
+
+
+static int extension_index( const char * const name )
+  {
+  int i;
+  for( i = 0; known_extensions[i].from; ++i )
+    {
+    const char * const ext = known_extensions[i].from;
+    if( strlen( name ) > strlen( ext ) &&
+        strncmp( name + strlen( name ) - strlen( ext ), ext, strlen( ext ) ) == 0 )
+      return i;
+    }
+  return -1;
   }
 
 
@@ -183,23 +181,22 @@ static int open_instream( const char * const name,
   }
 
 
-static int extension_index( const char * const name )
+/* assure at least a minimum size for buffer 'buf' */
+static void * resize_buffer( void * buf, const int min_size )
   {
-  int i;
-  for( i = 0; known_extensions[i].from; ++i )
+  if( buf ) buf = realloc( buf, min_size );
+  else buf = malloc( min_size );
+  if( !buf )
     {
-    const char * const ext = known_extensions[i].from;
-    if( strlen( name ) > strlen( ext ) &&
-        strncmp( name + strlen( name ) - strlen( ext ), ext, strlen( ext ) ) == 0 )
-      return i;
+    show_error( "Not enough memory.", 0, false );
+    cleanup_and_fail( 1 );
     }
-  return -1;
+  return buf;
   }
 
 
-static void set_d_outname( const char * const name )
+static void set_d_outname( const char * const name, const int i )
   {
-  const int i = extension_index( name );
   if( i >= 0 )
     {
     const char * const from = known_extensions[i].from;
@@ -286,9 +283,9 @@ static void close_and_set_permissions( const struct stat * const in_statsp )
 static int decompress( const int infd, struct Pretty_print * const pp,
                        const bool testing )
   {
-  long long partial_file_pos = 0;
+  unsigned long long partial_file_pos = 0;
   struct Range_decoder rdec;
-  int retval = 0, result;
+  int retval = 0;
   bool first_member;
   if( !Rd_init( &rdec, infd ) )
     {
@@ -296,13 +293,14 @@ static int decompress( const int infd, struct Pretty_print * const pp,
     cleanup_and_fail( 1 );
     }
 
-  for( first_member = true; ; first_member = false, Pp_reset( pp ) )
+  for( first_member = true; ; first_member = false )
     {
+    int result;
     File_header header;
     struct LZ_decoder decoder;
     Rd_reset_member_position( &rdec );
     Rd_read_data( &rdec, header, Fh_size );
-    if( Rd_finished( &rdec ) )		/* End Of File */
+    if( Rd_finished( &rdec ) )			/* End Of File */
       {
       if( first_member )
         { Pp_show_msg( pp, "Error reading member header" ); retval = 1; }
@@ -328,13 +326,7 @@ static int decompress( const int infd, struct Pretty_print * const pp,
         retval = 2; break; }
 
     if( verbosity >= 2 || ( verbosity == 1 && first_member ) )
-      {
-      Pp_show_msg( pp, 0 );
-      if( verbosity >= 2 )
-        fprintf( stderr, "version %d, dictionary size %7sB.  ",
-                 Fh_version( header ),
-                 format_num( Fh_get_dictionary_size( header ) ) );
-      }
+      { Pp_show_msg( pp, 0 ); if( verbosity >= 2 ) show_header( header ); }
 
     if( !LZd_init( &decoder, header, &rdec, outfd ) )
       {
@@ -350,16 +342,16 @@ static int decompress( const int infd, struct Pretty_print * const pp,
         {
         Pp_show_msg( pp, 0 );
         if( result == 2 )
-          fprintf( stderr, "File ends unexpectedly at pos %lld\n",
+          fprintf( stderr, "File ends unexpectedly at pos %llu\n",
                    partial_file_pos );
         else
-          fprintf( stderr, "Decoder error at pos %lld\n", partial_file_pos );
+          fprintf( stderr, "Decoder error at pos %llu\n", partial_file_pos );
         }
       retval = 2; break;
       }
     if( verbosity >= 2 )
       { if( testing ) fprintf( stderr, "ok\n" );
-        else fprintf( stderr, "done\n" ); }
+        else fprintf( stderr, "done\n" ); Pp_reset( pp ); }
     }
   Rd_free( &rdec );
   if( verbosity == 1 && retval == 0 )
@@ -371,13 +363,13 @@ static int decompress( const int infd, struct Pretty_print * const pp,
 
 void signal_handler( int sig )
   {
-  sig = 0;			/* keep compiler happy */
+  if( sig ) {}				/* keep compiler happy */
   show_error( "Control-C or similar caught, quitting.", 0, false );
   cleanup_and_fail( 1 );
   }
 
 
-static void set_signals()
+static void set_signals( void )
   {
   signal( SIGHUP, signal_handler );
   signal( SIGINT, signal_handler );
@@ -388,7 +380,7 @@ static void set_signals()
 void Pp_init( struct Pretty_print * const pp, const char * const filenames[],
               const int num_filenames, const int v )
   {
-  unsigned int stdin_name_len;
+  unsigned stdin_name_len;
   int i;
   pp->name = 0;
   pp->stdin_name = "(stdin)";
@@ -400,31 +392,13 @@ void Pp_init( struct Pretty_print * const pp, const char * const filenames[],
   for( i = 0; i < num_filenames; ++i )
     {
     const char * const s = filenames[i];
-    const int len = ( !strcmp( s, "-" ) ? stdin_name_len : strlen( s ) );
+    const int len = ( (strcmp( s, "-" ) == 0) ? stdin_name_len : strlen( s ) );
     if( len > pp->longest_name ) pp->longest_name = len;
     }
   if( pp->longest_name == 0 ) pp->longest_name = stdin_name_len;
   }
 
 
-void Pp_show_msg( struct Pretty_print * const pp, const char * const msg )
-  {
-  if( verbosity >= 0 )
-    {
-    if( pp->first_post )
-      {
-      int i, len;
-      pp->first_post = false;
-      fprintf( stderr, "  %s: ", pp->name );
-      len = pp->longest_name - strlen( pp->name );
-      for( i = 0; i < len; ++i ) fprintf( stderr, " " );
-      if( !msg ) fflush( stderr );
-      }
-    if( msg ) fprintf( stderr, "%s.\n", msg );
-    }
-  }
-
-
 void show_error( const char * const msg, const int errcode, const bool help )
   {
   if( verbosity >= 0 )
@@ -435,7 +409,7 @@ void show_error( const char * const msg, const int errcode, const bool help )
       if( errcode > 0 ) fprintf( stderr, ": %s", strerror( errcode ) );
       fprintf( stderr, "\n" );
       }
-    if( help && invocation_name && invocation_name[0] )
+    if( help )
       fprintf( stderr, "Try '%s --help' for more information.\n",
                invocation_name );
     }
@@ -495,7 +469,7 @@ int main( const int argc, const char * const argv[] )
     {
     const int code = ap_code( &parser, argind );
     const char * const arg = ap_argument( &parser, argind );
-    if( !code ) break;				/* no more options */
+    if( !code ) break;					/* no more options */
     switch( code )
       {
       case 'c': to_stdout = true; break;
@@ -513,28 +487,23 @@ int main( const int argc, const char * const argv[] )
     } /* end process options */
 
 #if defined(__MSVCRT__) || defined(__OS2__)
-  _fsetmode( stdin, "b" );
-  _fsetmode( stdout, "b" );
+  setmode( STDIN_FILENO, O_BINARY );
+  setmode( STDOUT_FILENO, O_BINARY );
 #endif
 
   if( testing )
     outfd = -1;
 
-  for( ; argind < ap_arguments( &parser ); ++argind )
-    {
-    if( strcmp( ap_argument( &parser, argind ), "-" ) )
-      filenames_given = true;
-    ++num_filenames;
-    filenames = resize_buffer( filenames, num_filenames * sizeof (char *) );
-    filenames[num_filenames-1] = ap_argument( &parser, argind );
-    }
+  num_filenames = max( 1, ap_arguments( &parser ) - argind );
+  filenames = resize_buffer( filenames, num_filenames * sizeof filenames[0] );
+  filenames[0] = "-";
 
-  if( num_filenames == 0 )
+  for( i = 0; argind + i < ap_arguments( &parser ); ++i )
     {
-    ++num_filenames;
-    filenames = resize_buffer( filenames, sizeof (char *) );
-    filenames[num_filenames-1] = "-";
+    filenames[i] = ap_argument( &parser, argind + i );
+    if( strcmp( filenames[i], "-" ) != 0 ) filenames_given = true;
     }
+
   if( !to_stdout && !testing &&
       ( filenames_given || default_output_filename[0] ) )
     set_signals();
@@ -549,7 +518,7 @@ int main( const int argc, const char * const argv[] )
     const struct stat * in_statsp;
     output_filename[0] = 0;
 
-    if( !filenames[i][0] || !strcmp( filenames[i], "-" ) )
+    if( !filenames[i][0] || strcmp( filenames[i], "-" ) == 0 )
       {
       input_filename = "";
       infd = STDIN_FILENO;
@@ -565,7 +534,7 @@ int main( const int argc, const char * const argv[] )
           outfd_mode = all_rw;
           if( !open_outstream( force ) )
             {
-            if( outfd == -1 && retval < 1 ) retval = 1;
+            if( retval < 1 ) retval = 1;
             close( infd ); infd = -1;
             continue;
             }
@@ -582,11 +551,11 @@ int main( const int argc, const char * const argv[] )
         if( to_stdout ) outfd = STDOUT_FILENO;
         else
           {
-          set_d_outname( input_filename );
+          set_d_outname( input_filename, extension_index( input_filename ) );
           outfd_mode = usr_rw;
           if( !open_outstream( force ) )
             {
-            if( outfd == -1 && retval < 1 ) retval = 1;
+            if( retval < 1 ) retval = 1;
             close( infd ); infd = -1;
             continue;
             }
diff --git a/testsuite/check.sh b/testsuite/check.sh
index fea9d0a..8408109 100755
--- a/testsuite/check.sh
+++ b/testsuite/check.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # check script for Lunzip - Decompressor for lzip files
-# Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+# Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 #
 # This script is free software: you have unlimited permission
 # to copy, distribute and modify it.
@@ -23,27 +23,14 @@ cd "${objdir}"/tmp
 
 cat "${testdir}"/test.txt > in || framework_failure
 cat in in > in2 || framework_failure
-cat "${testdir}"/test_v1.lz > in.lz || framework_failure
+cat "${testdir}"/test.txt.lz > in.lz || framework_failure
 cat in.lz in.lz > in2.lz || framework_failure
 fail=0
 
 printf "testing lunzip-%s..." "$2"
 
-"${LZIP}" -t "${testdir}"/test_v0.lz || fail=1
-printf .
-"${LZIP}" -cd "${testdir}"/test_v0.lz > copy || fail=1
-cmp in copy || fail=1
-printf .
-
-"${LZIP}" -t "${testdir}"/test_v1.lz || fail=1
-printf .
-"${LZIP}" -cd "${testdir}"/test_v1.lz > copy || fail=1
-cmp in copy || fail=1
-printf .
-
-"${LZIP}" -t "${testdir}"/test_sync.lz || fail=1
-printf .
-"${LZIP}" -cd "${testdir}"/test_sync.lz > copy || fail=1
+"${LZIP}" -t "${testdir}"/test.txt.lz || fail=1
+"${LZIP}" -cd "${testdir}"/test.txt.lz > copy || fail=1
 cmp in copy || fail=1
 printf .
 
diff --git a/testsuite/test.txt.lz b/testsuite/test.txt.lz
new file mode 100644
index 0000000..4db881a
Binary files /dev/null and b/testsuite/test.txt.lz differ
diff --git a/testsuite/test_sync.lz b/testsuite/test_sync.lz
deleted file mode 100644
index 419fa97..0000000
Binary files a/testsuite/test_sync.lz and /dev/null differ
diff --git a/testsuite/test_v0.lz b/testsuite/test_v0.lz
deleted file mode 100644
index a09b1e8..0000000
Binary files a/testsuite/test_v0.lz and /dev/null differ
diff --git a/testsuite/test_v1.lz b/testsuite/test_v1.lz
deleted file mode 100644
index f1c79eb..0000000
Binary files a/testsuite/test_v1.lz and /dev/null differ
-- 
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