Fix ToC with foreign chars

Note that I suspect you would need a recent Hugo version for this fix to work, as Goldmark (the new renderer) has a slightly different ID generator.

Fixes #34

Author: bep

layouts/_default/list.html

@@ -9,11 +9,11 @@
         {{ $headers := partial "funcs/toc_from_pages" .Site.RegularPages }}
         {{ range $headers }}
             <li>
-                <a href="#{{ .title | anchorize }}" class="toc-h{{ .level }} toc-link" data-title="{{ .title }}">{{ .title }}</a>
+                <a href="#{{ .id }}" class="toc-h{{ .level }} toc-link" data-title="{{ .title }}">{{ .title }}</a>
                 {{if .sub }}
                     <ul class="toc-list-h2">
                         {{range .sub}}
-                            <li><a href="#{{ .title | anchorize }}" class="toc-h{{ .level }} toc-link" data-title="{{ .title }}">{{ .title }}</a></li>
+                            <li><a href="#{{ .id }}" class="toc-h{{ .level }} toc-link" data-title="{{ .title }}">{{ .title }}</a></li>
                         {{end}}
                     </ul>
                 {{end}}

layouts/partials/funcs/toc_from_pages.html

@@ -12,9 +12,8 @@
 {{ range $combined }}
     {{ $level := int (substr . 2 1) }}
     {{ if le $level 2 }}
-        {{ $title := . | replaceRE "</?h\\d.*?>" "" | htmlUnescape | safeHTML }}
-        {{ $item := dict "level" $level "title" $title }}
-
+        {{ $idTitle := split (. | replaceRE "<h\\d id=\"(.*?)\">(.*)</h\\d>" "$1|$2") "|" }} 
+        {{ $item := dict "level" $level "id" (index $idTitle 0) "title" (index $idTitle 1) }}
         {{ if eq $level 1 }}
             {{ if ne $previousLevel 0 }}
                 {{ $tocItem := merge $previousH1 (dict "sub" $h2s) }}