Ticket #13239: 22355.1.patch

template.php

@@ -539 +539 @@
  */
 function locate_template($template_names, $load = false, $require_once = true ) {
         $located = '';
+    $locations = array(  
+        get_stylesheet_directory(),  
+                get_template_directory()  
+        );  
+
+        /**  
+         * Filter the possible template locations.  
+         *  
+         * @param array $locations Possible template locations.  
+         */  
+        $locations = apply_filters( 'template_locations', $locations );  
+  
         foreach ( (array) $template_names as $template_name ) {
-                if ( !$template_name )
+                if ( !$template_name ) {
                         continue;
-                if ( file_exists(STYLESHEETPATH . '/' . $template_name)) {
-                        $located = STYLESHEETPATH . '/' . $template_name;
-                        break;
-                } elseif ( file_exists(TEMPLATEPATH . '/' . $template_name) ) {
-                        $located = TEMPLATEPATH . '/' . $template_name;
-                        break;
-                } elseif ( file_exists( ABSPATH . WPINC . '/theme-compat/' . $template_name ) ) {
-                        $located = ABSPATH . WPINC . '/theme-compat/' . $template_name;
-                        break;
                 }
+
+                foreach ( (array) $locations as $location ) {  
+                        $template = trailingslashit( $location ) . $template_name;  
+                        if ( file_exists( $template ) {  
+                                $located = $template;  
+                                break;  
+                        }  
+                }
         }
 
-        if ( $load && '' != $located )
+        /**  
+         * Filter the set template location  
+         *  
+         * @param       string  $located Generated template location.  
+         * @param       array   $templates_names Possible template names.  
+         */  
+        $located = apply_filters( 'locate_template', $located, $template_names );
+
+        if ( $load && '' != $located ) {
                 load_template( $located, $require_once );
+        }
 
         return $located;
 }