{{ define "urls" }}
  <h2>Backlinks, outgoing URLs, bibliographic references and internal links:</h2>
  {{ $s := partialCached "scratch.html" . }}

  <div id="toggleAllLinks" onclick="toggleAllLinks()">[toggle expand/collapse]</div>
  <p></p>
  {{ range $p := .Site.RegularPages }}
    <details><summary>{{ with $p.File }}<span class="sup">{{- substr .Dir 0 -1  -}}⁄</span>{{ end }}<a href="{{ $p.RelPermalink }}{{ if eq hugo.Environment "offline" }}index.html{{ end }}">{{ $p.Title }}</a></summary>

      {{ $pPath := printf "/%s" $p.File }}
      {{ with $ss := $s.Get $pPath }}
        {{ with $ss.backlinks }}
          {{ range $i, $_ := $ss.backlinks }}
            {{ if eq $i 0 }}
              <details><summary>Mentioned in other Sandpoints pages ({{ len $ss.backlinks }}):</summary><ul>
            {{ end }}
            <li>{{ with $_.File }}<span class="sup">{{ substr .Dir 0 -1 }}⁄</span>{{ end }}<a href="{{ $_.RelPermalink }}">{{ $_.Title }}</a></li>
          {{ end }}
              </ul></details>
        {{ end }}
      {{ end }}

      {{ with ($p.Scratch.Get "links") }}
        {{ range $i, $_ := uniq ($p.Scratch.Get "links") }}
          {{ if eq $i 0 }}
            <details><summary>Internal links to other Sandpoint pages ({{ len (uniq ($p.Scratch.Get "links")) }}):</summary><ul>
          {{ end }}
          <li>{{ with $_.File }}<span class="sup">{{ substr .Dir 0 -1 }}⁄</span>{{ end }}<a href="{{ $_.RelPermalink }}">{{ $_.Title }}</a></li>
        {{ end }}
            </ul></details>
      {{ end }}

      {{ $http_links := (slice) }}
      {{ $library_links := (slice) }}
      {{ $anchor_links := (slice) }}
      {{ $other_links := (slice) }}

      {{ with ($p.Scratch.Get "urls") }}
        {{- $c_prefix := $p.Site.Params.sandpointsCatalogPrefix | default "/library/" -}}
        {{ range $i, $_ := ($p.Scratch.Get "urls") }}
          {{ if strings.HasPrefix $_ "http" }}
            {{ $http_links = $http_links | append $_ }}
          {{ else if strings.HasPrefix $_ $c_prefix }}
            {{ $library_links = $library_links | append $_ }}
          {{ else}}
            {{ $other_links = $other_links | append $_ }}
          {{ end }}
        {{ end }}
      {{ end }}

      {{ with $http_links }}
        {{ range $i, $_ := $http_links }}
          {{ if eq $i 0 }}
            <details><summary>Outgoing links to other pages on Internet ({{ len $http_links }}):</summary><ul>
          {{ end }}
          <li><span class="sup">www⁄</span><a href="{{ $_ }}" target="_blank">{{ $_ }}</a></li>
        {{ end }}
            </ul></details>
      {{ end }}

      {{ with $library_links }}
        {{ range $i, $_ := $library_links }}
          {{ if eq $i 0 }}
            <details><summary>Links to Sandpoint's library ({{ len $library_links }}):</summary><ul>
          {{ end }}
          <li><span class="sup">lib⁄</span><a href="{{ $_ }}" target="_blank">{{ $_ }}</a></li>
        {{ end }}
            </ul></details>
      {{ end }}

      {{ with ($p.Scratch.Get "bibs") }}
        {{ range $i, $_ := ($p.Scratch.Get "bibs") }}
          {{ if eq $i 0 }}
            <details><summary>Bibliographic references ({{ len ($p.Scratch.Get "bibs") }}):</summary><ul>
          {{ end }}
          <li><span class="sup">bib⁄</span><a href="{{ index $_ 0 }}" target="_blank">{{ index $_ 1 }}</a></li>
        {{ end }}
            </ul></details>
      {{ end }}

      {{ with $other_links }}
        {{ $formattingN := 0 }}
        {{ $anchorN := 0 }}
        {{ range $i, $_ := $other_links }}
          {{ if eq $i 0 }}
            <details><summary>Anchor, formatting and other links ({{ len $other_links }}):</summary><ul>
          {{ end }}
          {{ if strings.HasPrefix $_ "#" }}
            {{ $anchorN = add $anchorN 1 }}
          {{ else if strings.HasPrefix $_ "{"}}
            {{ $formattingN = add $formattingN 1 }}
          {{ else }}
            <li><span class="sup">other⁄</span><a href="{{ $_ }}" target="_blank">{{ $_ }}</a></li>
          {{ end }}
        {{ end }}
        {{ with $formattingN }}<li>{{ $formattingN }} formatting links.</a></li>{{ end }}
        {{ with $anchorN }}<li>{{ $anchorN }} anchor links.</a></li>{{ end }}
            </ul></details>
      {{ end }}

    </details>

  {{ end }}
{{ end }}