1 files changed, 5 insertions, 5 deletions

diff --git a/gl/m4/double-slash-root.m4 b/gl/m4/double-slash-root.m4
index 69d60d01..8c6841bc 100644
--- a/gl/m4/double-slash-root.m4
+++ b/gl/m4/double-slash-root.m4
@@ -1,5 +1,5 @@
-# double-slash-root.m4 serial 2   -*- Autoconf -*-
-dnl Copyright (C) 2006 Free Software Foundation, Inc.
+# double-slash-root.m4 serial 4   -*- Autoconf -*-
+dnl Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -24,15 +24,15 @@ AC_DEFUN([gl_DOUBLE_SLASH_ROOT],
             gl_cv_double_slash_root='unknown, assuming no' ;;
         esac
       else
-        set x `ls -di / //`
-        if test $[2] = $[4] && wc //dev/null >/dev/null 2>&1; then
+        set x `ls -di / // 2>/dev/null`
+        if test "$[2]" = "$[4]" && wc //dev/null >/dev/null 2>&1; then
           gl_cv_double_slash_root=no
         else
           gl_cv_double_slash_root=yes
         fi
       fi])
   if test "$gl_cv_double_slash_root" = yes; then
-    AC_DEFINE([DOUBLE_SLASH_IS_DISTINCT_ROOT], 1,
+    AC_DEFINE([DOUBLE_SLASH_IS_DISTINCT_ROOT], [1],
       [Define to 1 if // is a file system root distinct from /.])
   fi
 ])