Ticket #25879: 25879-3.patch

wp-admin/includes/template.php

@@ -700 +700 @@
  */
 function page_template_dropdown( $default = '' ) {
         $templates = get_page_templates();
+        /**
+         * Filter the page templates displayed in dropdown.
+         *
+         * @since 3.8
+         *
+         * @param array $templates The templates to be displayed.
+         * @param string $default The default template file name.
+         */
+        $templates = apply_filters( 'page_template_dropdown_items', $templates, $default );
         ksort( $templates );
         foreach (array_keys( $templates ) as $template )
                 : if ( $default == $templates[$template] )