ref: d2ec1a06df8ab6b17ad05cb008d5701b40327d47
dir: /themes/gohugoioTheme/layouts/shortcodes/readfile.html/
{{$file := .Get "file"}} {{- if eq (.Get "markdown") "true" -}} {{- $file | readFile | markdownify -}} {{- else -}} {{ $file | readFile | safeHTML }} {{- end -}}