Index: wp-admin/includes/post.php
===================================================================
--- wp-admin/includes/post.php	(revision 22639)
+++ wp-admin/includes/post.php	(working copy)
@@ -1044,7 +1044,7 @@
 	$post->post_name = $original_name;
 	unset($post->filter);
 
-	return $permalink;
+	return apply_filters( 'get_sample_permalink', $permalink, $title, $name, $id, $post );
 }
 
 /**