related to #1693 changed smarty version to 4.1.0

include/smarty/docs/programmers/api-variables/variable-default-template-handler-func.md

@@ -0,0 +1,50 @@
+\$default\_template\_handler\_func {#variable.default.template.handler.func}
+==================================
+
+This function is called when a template cannot be obtained from its
+resource.
+
+> **Note**
+>
+> The default handler is currently only invoked for file resources. It
+> is not triggered when the resource itself cannot be found, in which
+> case a SmartyException is thrown.
+
+
+    <?php
+
+    $smarty = new Smarty();
+    $smarty->default_template_handler_func = 'my_default_template_handler_func';
+
+    /**
+     * Default Template Handler
+     *
+     * called when Smarty's file: resource is unable to load a requested file
+     * 
+     * @param string   $type     resource type (e.g. "file", "string", "eval", "resource")
+     * @param string   $name     resource name (e.g. "foo/bar.tpl")
+     * @param string  &$content  template's content
+     * @param integer &$modified template's modification time
+     * @param Smarty   $smarty   Smarty instance
+     * @return string|boolean   path to file or boolean true if $content and $modified 
+     *                          have been filled, boolean false if no default template 
+     *                          could be loaded
+     */
+    function my_default_template_handler_func($type, $name, &$content, &$modified, Smarty $smarty) {
+        if (false) {
+            // return corrected filepath
+            return "/tmp/some/foobar.tpl";
+        } elseif (false) {
+            // return a template directly
+            $content = "the template source";
+            $modified = time();
+            return true;
+        } else {
+            // tell smarty that we failed
+            return false;
+        }
+    }
+
+    ?>
+
+