{{- $text  := default "mark"             (.Get "text"  | default (.Get 0)) -}}
{{- $title := default "highlighted text" (.Get "title" | default (.Get 1)) -}}
{{- $id    := default ""                 (.Get "id"    | default (.Get 2)) -}}

{{- if gt (len .Inner) 1 -}}
  {{- $text = trim .Inner "\n" -}}
{{- end -}}

{{- if $id -}}
  {{- $id = print "mark:" (truncate 30 "" $text | anchorize | replaceRE `\d` "") -}}
  {{- $id = printf `id=%q` $id -}}
{{- end -}}

<mark {{ $id | safeHTMLAttr }} title="{{- $title -}}"><span>{{- $text | markdownify -}}</span></mark>
{{- /* This comment removes trailing newlines and white spaces. */ -}}