new file mode 100644
--- /dev/null
+++ b/library/smarty/libs/plugins/variablefilter.htmlspecialchars.php
@@ -0,0 +1,18 @@
+<?php
+/**
+ * Smarty plugin
+ *
+ * @package    Smarty
+ * @subpackage PluginsFilter
+ */
+
+/**
+ * Smarty htmlspecialchars variablefilter plugin
+ *
+ * @param string $source input string
+ *
+ * @return string filtered output
+ */
+function smarty_variablefilter_htmlspecialchars($source) {
+    return htmlspecialchars($source, ENT_QUOTES, Smarty::$_CHARSET);
+}