From 8644437d66e93144d75d0552c0f2613fefd84413 Mon Sep 17 00:00:00 2001
From: gustav_delius <gustav_delius>
Date: Fri, 7 May 2004 17:07:31 +0000
Subject: [PATCH] fixed bug 1037 by improving clean_filename()

---
 lib/moodlelib.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index f639ffff23..5fafa85170 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -1620,7 +1620,7 @@ function clean_filename($string) {
 ///    alphanumeric _ - . 
 
     $string = eregi_replace("\.\.+", "", $string);
-    $string = preg_replace('/[^\.\w-]/','_', $string ); // only allowed chars
+    $string = preg_replace('/[^\.a-zA-Z\d\_-]/','_', $string ); // only allowed chars
     $string = eregi_replace("_+", "_", $string);
     return    $string;
 }
-- 
2.39.5