hugo-theme-relearn/layouts/partials/shortcodes/include.html

{{- $page := .page }}
{{- if and (not $page) .context }}
  {{- $page = .context }}
  {{- warnf "%q: DEPRECATED parameter 'context' for shortcode 'include' found, use 'page' instead; see https://mcshelby.github.io/hugo-theme-relearn/basics/migration/#5180" $page.File.Filename }}
{{- end }}
{{- $file := .file }}
{{- $hideFirstHeading := .hidefirstheading | default false }}
{{- if eq (printf "%T" $hideFirstHeading) "string" }}
	{{- $hideFirstHeading = (eq $hideFirstHeading "true") }}
{{- end }}
{{- if and (gt (len (trim $file " ")) 0) (fileExists $file) }}
	{{- if $hideFirstHeading }}<div class="include hide-first-heading">{{ end }}
	{{- with $page }}

{{ $file | readFile | safeHTML }}

	{{- end }}
	{{- if $hideFirstHeading }}</div>{{ end }}
{{- end }}