M html.go → html.go

@@ -107,7 +107,7 @@ )
 
 // NewHTMLRenderer creates and configures an HTMLRenderer object, which
 // satisfies the Renderer interface.
-func NewHTMLRenderer(params HTMLRendererParameters) Renderer {
+func NewHTMLRenderer(params HTMLRendererParameters) *HTMLRenderer {
 	// configure the rendering engine
 	closeTag := htmlClose
 	if params.Flags&UseXHTML != 0 {

M node.go → node.go

@@ -310,6 +310,10 @@ nw.entering = entering
 	return nw.next()
 }
 
+func (ast *Node) String() string {
+	return dumpString(ast)
+}
+
 func dump(ast *Node) {
 	fmt.Println(dumpString(ast))
 }