### Eclipse Workspace Patch 1.0
#P moodle
Index: lib/filterlib.php
===================================================================
RCS file: /cvsroot/moodle/moodle/lib/filterlib.php,v
retrieving revision 1.24.10.4
diff -u -r1.24.10.4 filterlib.php
--- lib/filterlib.php	18 Feb 2009 11:02:11 -0000	1.24.10.4
+++ lib/filterlib.php	24 Aug 2009 03:50:42 -0000
@ -147,8 +153,9 @@
             $linkobject->work_phrase = preg_replace('/([#*%])/','\1\1',$linkobject->work_phrase);
 
         /// Set the replacement phrase properly
-            if ($linkobject->replacementphrase) {    //We have specified a replacement phrase
-            /// Strip tags
+            if ($linkobject->replacementphrase !== null) {    //We have specified a replacement phrase
+            /// Strip tags and double special characters
+                $linkobject->work_replacementphrase = preg_replace('/([#*%])/','\1\1',$linkobject->work_replacementphrase);
                 $linkobject->work_replacementphrase = strip_tags($linkobject->replacementphrase);
             } else {                                 //The replacement is the original phrase as matched below
                 $linkobject->work_replacementphrase = '$1';