tests: avoid failure when running with no tty

[debian/gzip] / zdiff.in

diff --git a/zdiff.in b/zdiff.in
index f2f5435187dfadec6611c55ab843cf13cf3b0866..d57e44dffd0b40b490693389dc5e0d49f4dc9b3d 100644 (file)
--- a/zdiff.in
+++ b/zdiff.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 # sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh
 
-# Copyright (C) 1998, 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc.
+# Copyright (C) 1998, 2002, 2006-2007, 2009-2017 Free Software Foundation, Inc.
 # Copyright (C) 1993 Jean-loup Gailly
 
 # This program is free software; you can redistribute it and/or modify
@@ -111,15 +111,15 @@ elif test $# -eq 2; then
                         esac
                         (exit $cmp_status)
                     else
-                        F=`expr "/$2" : '.*/\(.*\)[-.][zZtga]*$'` || F=$prog
                         tmp=
                         trap '
                           test -n "$tmp" && rm -f "$tmp"
                           (exit 2); exit 2
                         ' HUP INT PIPE TERM 0
                         if type mktemp >/dev/null 2>&1; then
-                          tmp=`mktemp -t -- "$F.XXXXXX"` || exit 2
+                          tmp=`mktemp` || exit 2
                         else
+                          F=`expr "/$2" : '.*/\(.*\)[-.][zZtga]*$'` || F=$prog
                           set -C
                           tmp=${TMPDIR-/tmp}/$F.$$
                         fi