{{ $s := newScratch }}
{{ $s.Set "file" (.Get 0) }}
{{ if not ( path.Ext ($s.Get "file")) }}
 {{ $s.Set "file" (print ($s.Get "file") ".md") }}
{{ end }}
{{ if not ( fileExists ($s.Get "file")) }}
{{ $s.Set "file" (print ( .Site.Params.extraContentDir | default "content_common") "/" ($s.Get "file"))  }}
{{ end }}
<!-- file: {{ ($s.Get "file") }} -->
<div class="markdown-include">
  {{ if fileExists ($s.Get "file") }}
    {{ ($s.Get "file") | readFile | replaceRE "^---[\\s\\S]+?---" "" | markdownify }}
  {{ else }}
    Error file: {{ ($s.Get "file") }} not found
  {{ end }}
</div>