maint: update copyright year for 2013 (in branch maint)

[platform/upstream/automake.git] / t / ax / test-lib.sh

diff --git a/t/ax/test-lib.sh b/t/ax/test-lib.sh
index 6048f81..81f9170 100644 (file)
--- a/t/ax/test-lib.sh
+++ b/t/ax/test-lib.sh
@@ -1,6 +1,6 @@
 # -*- shell-script -*-
 #
-# Copyright (C) 1996-2012 Free Software Foundation, Inc.
+# Copyright (C) 1996-2013 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
@@ -51,9 +51,11 @@ if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
   }
 else
   argv0=$0
-  # Avoid command substitution failure, for it might cause problems with
-  # "set -e" on some shells.
-  case `(set -o) 2>/dev/null || :` in *posix*) set -o posix;; esac
+  # Ignore command substitution failure, for it might cause problems
+  # with "set -e" on some shells.
+  am_shell_opts=$(set -o) || :
+  case $am_shell_opts in *posix*) set -o posix;; esac
+  unset am_shell_opts
 fi
 
 # A single whitespace character.