Ticket #6603: 6603.diff

wp-includes/rewrite.php

@@ -1819 +1819 @@
                 $this->use_trailing_slashes = ( substr($this->permalink_structure, -1, 1) == '/' ) ? true : false;
 
                 // Enable generic rules for pages if permalink structure doesn't begin with a wildcard.
-                $structure = ltrim($this->permalink_structure, '/');
-                if ( $this->using_index_permalinks() )
-                        $structure = ltrim($this->permalink_structure, $this->index . '/');
-                if ( 0 === strpos($structure, '%postname%') ||
-                         0 === strpos($structure, '%category%') ||
-                         0 === strpos($structure, '%tag%') ||
-                         0 === strpos($structure, '%author%') )
+                if ( preg_match("/^[^%]*%(?:postname|category|tag|author)%/", $this->permalink_structure) )
                          $this->use_verbose_page_rules = true;
                 else
                         $this->use_verbose_page_rules = false;