Index: languages/messages/MessagesAr.php
===================================================================
--- languages/messages/MessagesAr.php (revision 51205)
+++ languages/messages/MessagesAr.php (working copy)
@@ -396,7 +396,7 @@
* the first group, and the remainder of the string as the second group. Modified to match
* Arabic trails too.
*/
-$linkTrail = '/^([a-z\x{0600}-\x{06FF}]+)(.*)$/suD';
+$linkTrail = '/^([a-zء-ي]+)(.*)$/sDu';
$imageFiles = array(
'button-bold' => 'ar/button_bold.png',
