diff --git a/Compiler.php b/Compiler.php
index aee7494..31cf43d 100644
--- a/Compiler.php
+++ b/Compiler.php
@@ -672,7 +672,7 @@ function compile() {
 				'$result = $this->construct( "'.$function_name.'" );',
 				'$substack = array();',
 				$this->parsed->compile()->replace(array(
-					'MATCH' => 'return $result ;',
+					'MATCH' => 'return $this->finalise( "'.$function_name.'", $result );',
 					'FAIL' => 'return FALSE;'
 				))
 			);
diff --git a/Parser.php b/Parser.php
index 7598deb..6b97343 100644
--- a/Parser.php
+++ b/Parser.php
@@ -173,6 +173,15 @@ function construct( $name ) {
 		return $result ;
 	}
 
+	function finalise( $name, &$result ) {
+		$callback = array( $this, "{$name}__finalise" ) ;
+		if ( is_callable( $callback ) ) {
+			call_user_func_array( $callback, array( &$result ) ) ;
+		}
+
+		return $result ;
+	}
+
 	function store ( &$result, $subres, $storetag = NULL ) {
 		$result['text'] .= $subres['text'] ;