From 01ec37f37744c0035a6ed570ec7736a6b43a2cd2 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Thu, 4 Jan 2007 05:24:04 +0000
Subject: [PATCH] * zdiff.in: Test /dev//fd/3, not /dev/fd/3, to work around a
 problem with Tru64 4.0F ksh M-11/16/88f reported by Thomas Koutcher in
 <http://lists.gnu.org/archive/html/bug-gzip/2007-01/msg00000.html>.

---
 ChangeLog | 6 ++++++
 zdiff.in  | 4 +++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index c0bcc6e..b7699b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2007-01-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* zdiff.in: Test /dev//fd/3, not /dev/fd/3, to work around a problem
+	with Tru64 4.0F ksh M-11/16/88f reported by Thomas Koutcher in
+	<http://lists.gnu.org/archive/html/bug-gzip/2007-01/msg00000.html>.
+
 2006-12-30  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* NEWS: Version 1.3.10 released.
diff --git a/zdiff.in b/zdiff.in
index 74c92fb..72caacc 100644
--- a/zdiff.in
+++ b/zdiff.in
@@ -65,7 +65,9 @@ elif test $# -eq 2; then
 		*[-.]gz* | *[-.][zZ] | *.t[ga]z | -)
 		    if test "$1$2" = --; then
 			gzip -cdfq - | eval "$cmp" - -
-		    elif test -r /dev/fd/3 3</dev/null; then
+		    # The extra slash in /dev//fd works around a problem with
+		    # Tru64 4.0F ksh M-11/16/88f.
+		    elif test -r /dev//fd/3 3</dev/null; then
 			gzip -cdfq -- "$1" |
 			  (gzip -cdfq -- "$2" |
 			   eval "$cmp" /dev/fd/3 -) 3<&0
-- 
2.47.2