ref: 42ed602580a672e420e1d860384e812f4871ff67
dir: /tpl/tplimpl/embedded/templates/shortcodes/gist.html/
<script src="//gist.github.com/{{ index .Params 0 }}/{{ index .Params 1 }}.js{{if len .Params | eq 3 }}?file={{ index .Params 2 }}{{end}}"></script>