Ticket #29573: trac_29573.patch

wp-admin/includes/post.php

@@ -1207 +1207 @@
         } else {
                 if ( function_exists( 'mb_strlen' ) && mb_strlen( $post_name ) > 30 ) {
                         $post_name_abridged = mb_substr( $post_name, 0, 14 ) . '…' . mb_substr( $post_name, -14 );
-                } elseif ( strlen( $post_name ) > 30 ) {
+                } elseif ( ! function_exists( 'mb_strlen' ) && strlen( $post_name ) > 30 ) {
                         $post_name_abridged = substr( $post_name, 0, 14 ) . '…' . substr( $post_name, -14 );
                 } else {
                         $post_name_abridged = $post_name;