Ticket #13239: 22355.1.php

Index: template.php
===================================================================
--- template.php        (revision 38766)
+++ template.php        (working copy)
@@ -539,23 +539,43 @@
  */
 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;
 }