repeatedly/mustache-d — pull request #12 by Abscissa (2013-04-19 19:16:25+00:00)
Title: Pass the unknown name to the handler to aid in debugging templates.

So that you can do stuff like this:

mustache.handler(
string(string name) {
throw new Exception("Missing name: "~name);
}
);

Very helpful for finding problems in templates.