rohanverma.net/themes/after-dark/layouts/shortcodes/external.html

{{ $href := .Get "href" | default nil -}}
{{ $body := .Get "text" | default .Inner -}}
{{ $class := .Get "class" -}}
{{ $referrerpolicy := .Get "referrerpolicy" -}}
{{ $target := .Get "target" -}}
{{ $title := .Get "title" -}}
{{ $type := .Get "type" -}}
{{ $rel := .Get "rel" -}}
{{ $itemtype := .Get "itemtype" -}}
{{- if .IsNamedParams -}}
  {{ partial "components/external.html" (dict "href" $href "body" $body "class" $class "referrerpolicy" $referrerpolicy "target" $target "type" $type "title" $title "rel" $rel "itemtype" $itemtype "suppress_external" (and .Inner (eq (len (findRE "external" $rel)) 0))) }}
{{- else if gt (len .Params) 1 -}}
  {{ partial "components/external.html" (dict "href" (.Get 0) "body" (.Get 1)) }}
{{- else -}}
  {{ partial "components/external.html" (dict "href" (.Get 0)) }}
{{- end -}}
{{- if or (and .IsNamedParams (eq $href nil)) (and (eq .IsNamedParams false) (eq (.Get 0) nil)) }}
  <p>{{ partial "components/alert.html" (dict "type" "error" "body" (errorf "Invalid use of external shortcode. Please provide a URL.")) }}</p>
{{ end -}}