ref: f219ac09f6b7e26d84599401512233d77c1bdb4c
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>