ref: 1dd0c69c7b18c3e504411a2fb4f1055be2532aeb
dir: /tpl/tplimpl/embedded/templates/shortcodes/highlight.html/
{{ if len .Params | eq 2 }}{{ highlight (trim .Inner "\n\r") (.Get 0) (.Get 1) }}{{ else }}{{ highlight (trim .Inner "\n\r") (.Get 0) "" }}{{ end }}