code: function(val, cx, partials, text, tags) {
        var compiler = this.c;
        var options = this.options;
        options.delimiters = tags;
        var text = val.call(cx, text);
        text = (text == null) ? String(text) : text.toString();
        this.b(compiler.compile(text, options).render(cx, partials));
        return false;
      }
docs: higher order templates