hugo-theme-relearn/layouts/partials/toc-id.html

{{- if or (eq .Kind "taxonomy") (eq .Kind "term") }}
  {{- $lastCapital := "" }}
  {{- $pages := slice }}
  {{- if eq .Kind "taxonomy" }}
    {{- range .Data.Terms }}
      {{- $len := 0 }}
      {{- range .Pages }}
        {{- $c:=""}}{{/* count pages of term */}}
        {{- if and .Title .RelPermalink (or (ne (.Scratch.Get "relearnIsHiddenStem") true) (ne .Site.Params.disableTagHiddenPages true) ) }}
          {{- $len = add $len 1 }}
        {{- end }}
      {{- end }}
      {{- if $len }}
        {{- $pages = $pages| append (dict "Title" (default (humanize .Page.Data.Term | strings.Title) .Page.Title) "Page" . "Len" $len )}}
      {{- end }}
    {{- end }}
  {{- else if eq .Kind "term" }}
    {{- range .Pages }}
      {{- if and .Title .RelPermalink (or (ne (.Scratch.Get "relearnIsHiddenStem") true) (ne .Site.Params.disableTagHiddenPages true) ) }}
        {{- $pages = $pages | append (dict "Title" .Title "Page" . )}}
      {{- end }}
    {{- end }}
  {{- end }}
  {{- $toc_pages := "" }}
  {{- range sort $pages ".Title" }}
    {{- $capital := substr .Title 0 1 | upper }}
    {{- if ne $lastCapital $capital }}
      {{- $toc_pages = printf "%s    <li><a href=\"#%s\">%s</a></li>\n" $toc_pages ($capital | plainify | anchorize) $capital }}
    {{- end }}
    {{- $lastCapital = $capital }}
  {{- end }}
  {{- $toc := trim (partial "toc.html" .) " \n\r\t" }}
  {{- if and (not $toc) $toc_pages }}
    {{- $toc = printf "<nav id=\"TableOfContents\"></nav>" }}
  {{- end }}
  {{- if and $toc $toc_pages }}
    {{- $toc = replaceRE "^(<nav id=\"TableOfContents\">)[\\s]*" "${1}\n  <ul>\n" $toc }}
    {{- $toc = replaceRE "^(<nav id=\"TableOfContents\">[\\s]*<ul>)[\\s]*<ul>[\\n\\r]*" "${1}\n" $toc }}
    {{- $toc = replaceRE "[\\s]*(</nav>)$" "\n  </ul>\n${1}" $toc }}
    {{- $toc = replaceRE "[ \\t]*</ul>[\\s]*(</ul>[\\s]*</nav>)$" "  ${1}" $toc }}
    {{- $toc = replaceRE "([ \\t]*</ul>[\\s]*</nav>)$" (printf "%s${1}" $toc_pages) $toc }}
  {{- end }}
{{ $toc | safeHTML }}
{{- else }}
  {{- partial "toc.html" . }}
{{- end }}