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+ #!/bin/sh
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+
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+ # Copyright (C) 1998, 2002, 2006, 2007 Free Software Foundation
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+ # Copyright (C) 1993 Jean-loup Gailly
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+
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+ # Modified for XZ Utils by Andrew Dudman and Lasse Collin.
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+
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+ # This program is free software; you can redistribute it and/or modify
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+ # it under the terms of the GNU General Public License as published by
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+ # the Free Software Foundation; either version 2 of the License, or
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+ # (at your option) any later version.
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+
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+ # This program is distributed in the hope that it will be useful,
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+ # but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ # GNU General Public License for more details.
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+
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+ #SET_PATH - This line is a placeholder to ease patching this script.
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+
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+ # Instead of unsetting XZ_OPT, just make sure that xz will use file format
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+ # autodetection. This way memory usage limit and thread limit can be
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+ # specified via XZ_OPT. With gzip, bzip2, and lzop it's OK to just unset the
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+ # environment variables.
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+ xz='xz --format=auto'
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+ unset GZIP BZIP BZIP2 LZOP
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+
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+ case ${0##*/} in
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+ *cmp*) prog=xzcmp; cmp=${CMP:-cmp};;
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+ *) prog=xzdiff; cmp=${DIFF:-diff};;
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+ esac
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+
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+ version="$prog (XZ Utils) 5.2.4"
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+
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+ usage="Usage: ${0##*/} [OPTION]... FILE1 [FILE2]
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+ Compare FILE1 to FILE2, using their uncompressed contents if they are
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+ compressed. If FILE2 is omitted, then the files compared are FILE1 and
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+ FILE1 from which the compression format suffix has been stripped.
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+
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+ Do comparisons like '$cmp' does. OPTIONs are the same as for '$cmp'.
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+
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+ Report bugs to <lasse.collin@tukaani.org>."
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+
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+ # sed script to escape all ' for the shell, and then (to handle trailing
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+ # newlines correctly) turn trailing X on last line into '.
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+ escape='
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+ s/'\''/'\''\\'\'''\''/g
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+ $s/X$/'\''/
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+ '
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+
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+ while :; do
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+ case $1 in
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+ --h*) printf '%s\n' "$usage" || exit 2; exit;;
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+ --v*) echo "$version" || exit 2; exit;;
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+ --) shift; break;;
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+ -*\'*) cmp="$cmp '"`printf '%sX\n' "$1" | sed "$escape"`;;
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+ -?*) cmp="$cmp '$1'";;
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+ *) break;;
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+ esac
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+ shift
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+ done
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+ cmp="$cmp --"
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+
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+ for file; do
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+ test "X$file" = X- || <"$file" || exit 2
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+ done
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+
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+ xz1=$xz
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+ xz2=$xz
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+ xz_status=0
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+ exec 3>&1
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+
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+ if test $# -eq 1; then
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+ case $1 in
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+ *[-.]xz | *[-.]lzma | *.t[lx]z)
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+ ;;
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+ *[-.]bz2 | *.tbz | *.tbz2)
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+ xz1=bzip2;;
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+ *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z)
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+ xz1=gzip;;
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+ *[-.]lzo | *.tzo)
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+ xz1=lzop;;
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+ *)
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+ echo >&2 "$0: $1: Unknown compressed file name suffix"
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+ exit 2;;
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+ esac
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+ case $1 in
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+ *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *[-.]lzo)
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+ FILE=`expr "X$1" : 'X\(.*\)[-.][abglmoxzZ2]*$'`;;
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+ *.t[abglx]z)
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+ FILE=`expr "X$1" : 'X\(.*[-.]t\)[abglx]z$'`ar;;
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+ *.tbz2)
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+ FILE=`expr "X$1" : 'X\(.*[-.]t\)bz2$'`ar;;
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+ *.tzo)
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+ FILE=`expr "X$1" : 'X\(.*[-.]t\)zo$'`ar;;
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+ esac
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+ xz_status=$(
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+ exec 4>&1
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+ ($xz1 -cd -- "$1" 4>&-; echo $? >&4) 3>&- | eval "$cmp" - '"$FILE"' >&3
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+ )
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+ elif test $# -eq 2; then
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+ case $1 in
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+ *[-.]bz2 | *.tbz | *.tbz2) xz1=bzip2;;
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+ *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz1=gzip;;
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+ *[-.]lzo | *.tzo) xz1=lzop;;
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+ esac
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+ case $2 in
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+ *[-.]bz2 | *.tbz | *.tbz2) xz2=bzip2;;
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+ *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz2=gzip;;
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+ *[-.]lzo | *.tzo) xz2=lzop;;
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+ esac
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+ case $1 in
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+ *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | *[-.]lzo | *.tzo | -)
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+ case "$2" in
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+ *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | *[-.]lzo | *.tzo | -)
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+ if test "$1$2" = --; then
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+ xz_status=$(
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+ exec 4>&1
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+ ($xz1 -cdfq - 4>&-; echo $? >&4) 3>&- |
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+ eval "$cmp" - - >&3
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+ )
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+ elif # Reject Solaris 8's buggy /bin/bash 2.03.
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+ echo X | (echo X | eval "$cmp" /dev/fd/5 - >/dev/null 2>&1) 5<&0; then
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+ xz_status=$(
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+ exec 4>&1
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+ ($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- |
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+ ( ($xz2 -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- 5<&- </dev/null |
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+ eval "$cmp" /dev/fd/5 - >&3) 5<&0
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+ )
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+ cmp_status=$?
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+ case $xz_status in
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+ *[1-9]*) xz_status=1;;
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+ *) xz_status=0;;
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+ esac
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+ (exit $cmp_status)
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+ else
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+ F=`expr "/$2" : '.*/\(.*\)[-.][ablmotxz2]*$'` || F=$prog
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+ tmp=
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+ trap '
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+ test -n "$tmp" && rm -rf "$tmp"
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+ (exit 2); exit 2
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+ ' HUP INT PIPE TERM 0
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+ if type mktemp >/dev/null 2>&1; then
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+ # Note that FreeBSD's mktemp isn't fully compatible with
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+ # the implementations from mktemp.org and GNU coreutils.
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+ # It is important that the -t argument is the last argument
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+ # and that no "--" is used between -t and the template argument.
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+ # This way this command works on all implementations.
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+ tmp=`mktemp -d -t "$prog.XXXXXXXXXX"` || exit 2
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+ else
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+ # Fallback code if mktemp is missing. This isn't as
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+ # robust as using mktemp since this doesn't try with
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+ # different file names in case of a file name conflict.
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+ #
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+ # There's no need to save the original umask since
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+ # we don't create any non-temp files. Note that using
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+ # mkdir -m 0077 isn't secure since some mkdir implementations
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+ # create the dir with the default umask and chmod the
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+ # the dir afterwards.
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+ umask 0077
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+ mkdir -- "${TMPDIR-/tmp}/$prog.$$" || exit 2
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+ tmp="${TMPDIR-/tmp}/$prog.$$"
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+ fi
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+ $xz2 -cdfq -- "$2" > "$tmp/$F" || exit 2
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+ xz_status=$(
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+ exec 4>&1
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+ ($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- |
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+ eval "$cmp" - '"$tmp/$F"' >&3
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+ )
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+ cmp_status=$?
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+ rm -rf "$tmp" || xz_status=$?
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+ trap - HUP INT PIPE TERM 0
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+ (exit $cmp_status)
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+ fi;;
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+ *)
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+ xz_status=$(
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+ exec 4>&1
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+ ($xz1 -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- |
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+ eval "$cmp" - '"$2"' >&3
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+ );;
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+ esac;;
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+ *)
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+ case "$2" in
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+ *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | *[-.]lzo | *.tzo | -)
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+ xz_status=$(
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+ exec 4>&1
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+ ($xz2 -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- |
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+ eval "$cmp" '"$1"' - >&3
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+ );;
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+ *)
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+ eval "$cmp" '"$1"' '"$2"';;
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+ esac;;
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+ esac
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+ else
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+ echo >&2 "$0: Invalid number of operands; try \`${0##*/} --help' for help"
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+ exit 2
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+ fi
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+
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+ cmp_status=$?
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+ test "$xz_status" -eq 0 || exit 2
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+ exit $cmp_status