X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=zless.in;h=d34068d2b195f05d909eb9873145c976abaef587;hb=8ad557781fded024bfcb4e705100a10528f7feb0;hp=dae346f82e9fc55d9d3fbc033da127d2afdd55b0;hpb=e7921f54c622e3b32e525f345bc34308821e4ae0;p=debian%2Fgzip

diff --git a/zless.in b/zless.in
index dae346f..d34068d 100644
--- a/zless.in
+++ b/zless.in
@@ -1,10 +1,10 @@
 #!/bin/sh
 
-# Copyright (C) 1998, 2002, 2006 Free Software Foundation
+# Copyright (C) 1998, 2002, 2006-2007, 2010-2018 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 2 of the License, or
+# 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,
@@ -16,17 +16,15 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-PATH="BINDIR:$PATH"; export PATH
-
 version="zless (gzip) @VERSION@
-Copyright (C) 2006 Free Software Foundation, Inc.
+Copyright (C) 2007, 2011-2018 Free Software Foundation, Inc.
 This is free software.  You may redistribute copies of it under the terms of
-the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
+the GNU General Public License <https://www.gnu.org/licenses/gpl.html>.
 There is NO WARRANTY, to the extent permitted by law.
 
 Written by Paul Eggert."
 
-usage="Usage: zless [OPTION]... [FILE]...
+usage="Usage: $0 [OPTION]... [FILE]...
 Like 'less', but operate on the uncompressed contents of any compressed FILEs.
 
 Options are the same as for 'less'.
@@ -34,9 +32,40 @@ Options are the same as for 'less'.
 Report bugs to <bug-gzip@gnu.org>."
 
 case $1 in
---help)    exec echo "$usage";;
---version) exec echo "$version";;
+--help)      printf '%s\n' "$usage"   || exit 1; exit;;
+--version)   printf '%s\n' "$version" || exit 1; exit;;
+esac
+
+if test "${LESSMETACHARS+set}" != set; then
+  # Work around a bug in less 394 and earlier;
+  # it mishandles the metacharacters '$%=~'.
+  space=' '
+  tab='	'
+  newline='
+'
+  LESSMETACHARS="$space$tab$newline'"';*?"()<>[|&^`#\$%=~'
+  export LESSMETACHARS
+fi
+
+less_version=`less -V 2>/dev/null`
+case $less_version in
+less' '45[1-9]* | \
+less' '4[6-9][0-9]* | \
+less' '[5-9][0-9][0-9]* | \
+less' '[1-9][0-9][0-9][0-9]*)
+   check_exit_status='|';;
+*) check_exit_status='';;
+esac
+case $less_version in
+less' '429* | \
+less' '4[3-9][0-9]* | \
+less' '[5-9][0-9][0-9]* | \
+less' '[1-9][0-9][0-9][0-9]*)
+   use_input_pipe_on_stdin='-';;
+*) use_input_pipe_on_stdin='';;
 esac
 
-LESSOPEN="|gzip -cdfq -- %s"; export LESSOPEN
+LESSOPEN="|$check_exit_status${use_input_pipe_on_stdin}gzip -cdfq -- %s"
+export LESSOPEN
+
 exec less "$@"