72 lines
2.2 KiB
Plaintext
72 lines
2.2 KiB
Plaintext
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#!/bin/sh
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# Copyright (C) 1998, 2002, 2006-2007, 2010-2018 Free Software Foundation, Inc.
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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 3 of the License, or
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# (at your option) any later version.
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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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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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version="zless (gzip) 1.10
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Copyright (C) 2007, 2011-2018 Free Software Foundation, Inc.
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This is free software. You may redistribute copies of it under the terms of
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the GNU General Public License <https://www.gnu.org/licenses/gpl.html>.
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There is NO WARRANTY, to the extent permitted by law.
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Written by Paul Eggert."
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usage="Usage: $0 [OPTION]... [FILE]...
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Like 'less', but operate on the uncompressed contents of any compressed FILEs.
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Options are the same as for 'less'.
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Report bugs to <bug-gzip@gnu.org>."
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case $1 in
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--help) printf '%s\n' "$usage" || exit 1; exit;;
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--version) printf '%s\n' "$version" || exit 1; exit;;
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esac
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if test "${LESSMETACHARS+set}" != set; then
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# Work around a bug in less 394 and earlier;
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# it mishandles the metacharacters '$%=~'.
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space=' '
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tab=' '
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newline='
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'
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LESSMETACHARS="$space$tab$newline'"';*?"()<>[|&^`#\$%=~'
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export LESSMETACHARS
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fi
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less_version=`less -V 2>/dev/null`
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case $less_version in
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less' '45[1-9]* | \
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less' '4[6-9][0-9]* | \
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less' '[5-9][0-9][0-9]* | \
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less' '[1-9][0-9][0-9][0-9]*)
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check_exit_status='|';;
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*) check_exit_status='';;
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esac
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case $less_version in
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less' '429* | \
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less' '4[3-9][0-9]* | \
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less' '[5-9][0-9][0-9]* | \
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less' '[1-9][0-9][0-9][0-9]*)
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use_input_pipe_on_stdin='-';;
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*) use_input_pipe_on_stdin='';;
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esac
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LESSOPEN="|$check_exit_status${use_input_pipe_on_stdin}gzip -cdfq -- %s"
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export LESSOPEN
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exec less "$@"
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