From 05a661c43b02799fdb886551d61e82ba3ef8d363 Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Thu, 12 May 2005 22:22:45 +0000
Subject: [PATCH] [ must be quoted by [ ...

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2@554 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 program/acinclude.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/program/acinclude.m4 b/program/acinclude.m4
index 03382649..6243c211 100644
--- a/program/acinclude.m4
+++ b/program/acinclude.m4
@@ -38,7 +38,7 @@ AC_DEFUN([EX_CHECK_ALL],
 	     dnl remove the cached value and test again
 	     unset ac_cv_lib_$1_$2
              AC_CHECK_LIB($1,$2,[
-	         unset ac_cv_header_`echo $3 | sed "s/[^A-Za-z]/_/g"`
+	         unset ac_cv_header_`echo $3 | sed  sed ['s/[^a-zA-Z0-9_]/_/g;s/^[0-9]/_/']`
 		 AC_CHECK_HEADER($3,[EX_CHECK_STATE=YES],[])
 	     ],[])
           else
-- 
2.30.2