github.com/graemephi/kahugo@v0.62.3-0.20211121071557-d78c0423784d/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 }}