diff --git a/library/smarty/libs/sysplugins/smarty_internal_function_call_handler.php b/library/smarty/libs/sysplugins/smarty_internal_function_call_handler.php
new file mode 100644
--- /dev/null
+++ b/library/smarty/libs/sysplugins/smarty_internal_function_call_handler.php
@@ -0,0 +1,69 @@
+<?php
+/**
+ * Smarty Internal Plugin Function Call Handler
+ *
+ * @package    Smarty
+ * @subpackage PluginsInternal
+ * @author     Uwe Tews
+ */
+
+/**
+ * This class does handles template functions defined with the {function} tag missing in cache file.
+ * It can happen when the template function was called with the nocache option or within a nocache section.
+ * The template function will be loaded from it's compiled template file, executed and added to the cache file
+ * for later use.
+ *
+ * @package    Smarty
+ * @subpackage PluginsInternal
+ */
+class Smarty_Internal_Function_Call_Handler {
+    /**
+     * This function handles calls to template functions defined by {function}
+     * It does create a PHP function at the first call
+     *
+     * @param string $_name template function name
+     * @param Smarty_Internal_Template $_smarty_tpl
+     * @param string $_function PHP function name
+     * @param array $_params Smarty variables passed as call parameter
+     * @param bool $_nocache nocache flag
+     *
+     * @return bool
+     */
+    public static function call($_name, Smarty_Internal_Template $_smarty_tpl, $_function, $_params, $_nocache) {
+        $funcParam = $_smarty_tpl->properties['tpl_function'][$_name];
+        if (is_file($funcParam['compiled_filepath'])) {
+            // read compiled file
+            $code = file_get_contents($funcParam['compiled_filepath']);
+            // grab template function
+            if (preg_match("/\/\* {$_function} \*\/([\S\s]*?)\/\*\/ {$_function} \*\//", $code, $match)) {
+                // grab source info from file dependency
+                preg_match("/\s*'{$funcParam['uid']}'([\S\s]*?)\),/", $code, $match1);
+                unset($code);
+                $output = '';
+                // make PHP function known
+                eval($match[0]);
+                if (function_exists($_function)) {
+                    // search cache file template
+                    $tplPtr = $_smarty_tpl;
+                    while (!isset($tplPtr->cached) && isset($tplPtr->parent)) {
+                        $tplPtr = $tplPtr->parent;
+                    }
+                    // add template function code to cache file
+                    if (isset($tplPtr->cached)) {
+                        $cache = $tplPtr->cached;
+                        $content = $cache->read($tplPtr);
+                        if ($content) {
+                            // check if we must update file dependency
+                            if (!preg_match("/'{$funcParam['uid']}'([\S\s]*?)'nocache_hash'/", $content, $match2)) {
+                                $content = preg_replace("/('file_dependency'([\S\s]*?)\()/", "\\1{$match1[0]}", $content);
+                            }
+                            $cache->write($tplPtr, $content . "<?php " . $match[0] . "?>\n");
+                        }
+                    }
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+}