{{ range first 1 (where (where .Site.Pages ".Params.tags" "intersect" .Params.tags) "Permalink" "!=" .Permalink) }}
  {{ $.Scratch.Set "has_related" true }}
{{ end }}

{{ if $.Scratch.Get "has_related" }}
  Related Pages:
  {{ $num_to_show := .Site.Params.related_content_limit | default 5 }}
  {{ range first $num_to_show (where (where .Site.Pages ".Params.tags" "intersect" .Params.tags) "Permalink" "!=" .Permalink) }}
  <a href="{{ .RelPermalink }}">{{ .Title }}</a>
  {{ end }}
{{ end }}