From ee0e33940f9e6cb0225692337fa06c981108c64e Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Wed, 21 Dec 2011 16:11:43 -0800
Subject: [PATCH] zless: decompress stdin too, if less 429 or later

* zless.in: Use LESSOPEN |- feature of less 429 or later.
Problem reported by Jeroen Roovers via Mike Frysinger in
<http://lists.gnu.org/archive/html/bug-gzip/2011-12/msg00006.html>.
---
 zless.in | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/zless.in b/zless.in
index 4152017..93546de 100644
--- a/zless.in
+++ b/zless.in
@@ -53,5 +53,15 @@ if test "${LESSMETACHARS+set}" != set; then
   export LESSMETACHARS
 fi
 
-LESSOPEN="|gzip -cdfq -- %s"; export LESSOPEN
+less_version=`less -V` || exit
+case $less_version in
+'less 429
+'* | 'less '4[3-9][0-9]* | 'less '[5-9][0-9][0-9]* | 'less '[1-9][0-9][0-9][0-9]*)
+   use_input_pipe_on_stdin='-';;
+*) use_input_pipe_on_stdin='';;
+esac
+
+LESSOPEN="|${use_input_pipe_on_stdin}gzip -cdfq -- %s"
+export LESSOPEN
+
 exec less "$@"
-- 
2.30.2