Major update to the xzgrep and other scripts based on

the latest versions found from gzip CVS repository.

configure will try to find a POSIX shell to be used by
the scripts. This should ease portability on systems
which have pre-POSIX /bin/sh.

xzgrep and xzdiff support .xz, .lzma, .gz, and .bz2 files.
xzmore and xzless support only .xz and .lzma files.

The name of the xz executable used in these scripts is
now correct even if --program-transform-name has been used.

1 files changed, 0 insertions, 123 deletions

diff --git a/src/scripts/xzgrep b/src/scripts/xzgrep
deleted file mode 100755
index e359378b..00000000
--- a/src/scripts/xzgrep
+++ /dev/null
@@ -1,123 +0,0 @@
-#!/bin/sh
-
-# xzgrep -- a wrapper around a grep program that decompresses files as needed
-# Adapted to XZ Utils from gzip-1.3.3 + Red Hat's security patches
-# Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca>
-# Copyright (C) 1998, 2001 Free Software Foundation
-# Copyright (C) 1993 Jean-loup Gailly
-
-# 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 2, 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, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-# 02111-1307, USA.
-
-# Improve error handling, this is supported by bash but not all the other
-# shells so we hide the possible error:
-set -o pipefail > /dev/null 2> /dev/null
-
-prog=`echo "$0" | sed 's|.*/||'`
-case "$prog" in
-	*egrep)	grep=${EGREP-egrep}	;;
-	*fgrep)	grep=${FGREP-fgrep}	;;
-	*)	grep=${GREP-grep}	;;
-esac
-
-pat=""
-after_dash_dash=""
-files_with_matches=0
-files_without_matches=0
-no_filename=0
-with_filename=0
-
-while test $# -ne 0; do
-  case "$after_dash_dash$1" in
-  --d* | --rec*)	echo >&2 "$0: $1: option not supported"; exit 1;;
-  --files-with-*)	files_with_matches=1;;
-  --files-witho*)	files_without_matches=1;;
-  --no-f*)	no_filename=1;;
-  --wi*)	with_filename=1;;
-  --*)	;;
-  -*)
-	case "$1" in
-	-*[dr]*) echo >&2 "$0: $1: option not supported"; exit 1;;
-	esac
-	case "$1" in
-	-*H*)	with_filename=1;;
-	esac
-	case "$1" in
-	-*h*)	no_filename=1;;
-	esac
-	case "$1" in
-	-*L*)	files_without_matches=1;;
-	esac
-	case "$1" in
-	-*l*)	files_with_matches=1;;
-	esac;;
-  esac
-  case "$after_dash_dash$1" in
-  -[ef])   opt="$opt $1"; shift; pat="$1"
-           if test "$grep" = grep; then  # grep is buggy with -e on SVR4
-             grep=egrep
-           fi;;
-  -[ABCdm])opt="$opt $1 $2"; shift;;
-  --)      opt="$opt $1"; after_dash_dash=1;;
-  -*)	   opt="$opt $1";;
-   *)      if test -z "$pat"; then
-	     pat="$1"
-	   else
-	     break;
-           fi;;
-  esac
-  shift
-done
-
-if test -z "$pat"; then
-  echo "grep through .xz and .lzma files"
-  echo "usage: $prog [grep_options] pattern [files]"
-  exit 1
-fi
-
-if test $# -eq 0; then
-  xz -dc | $grep $opt "$pat"
-  exit $?
-fi
-
-res=0
-trap break SIGPIPE
-for i do
-  xz -dc -- "$i" |
-    if test $files_with_matches -eq 1; then
-      $grep $opt "$pat" > /dev/null && printf "%s\n" "$i"
-    elif test $files_without_matches -eq 1; then
-      $grep $opt "$pat" > /dev/null || printf "%s\n" "$i"
-    elif test $with_filename -eq 0 && { test $# -eq 1 || test $no_filename -eq 1; }; then
-      $grep $opt "$pat"
-    else
-      i=${i//\\/\\\\}
-      i=${i//|/\\|}
-      i=${i//&/\\&}
-      i=`printf "%s" "$i" | tr '\n' ' '`
-      if test $with_filename -eq 1; then
-	sed_script="s|^[^:]*:|${i}:|"
-      else
-	sed_script="s|^|${i}:|"
-      fi
-      $grep $opt "$pat" | sed "$sed_script"
-    fi
-  r=$?
-  test $res -lt $r && res=$r
-  # SIGPIPE + 128
-  test "$r" -eq 141 && exit $res
-done
-trap - SIGPIPE
-exit $res