fx-file-server/hugo/docsy/layouts/_partials/breadcrumb.html

{{ $isSingle := true -}}
{{ with .Parent -}}
  {{ $isSingle = .IsHome -}}
{{ end -}}
<nav aria-label="breadcrumb" class="td-breadcrumbs
    {{- if $isSingle }} td-breadcrumbs__single {{- end }}">
  <ol class="breadcrumb">
    {{- template "breadcrumbnav" (dict "p1" . "p2" .) }}
  </ol>
</nav>

{{- define "breadcrumbnav" -}}
  {{ if .p1.Parent -}}
    {{ if not .p1.Parent.IsHome -}}
      {{ template "breadcrumbnav" (dict "p1" .p1.Parent "p2" .p2 )  -}}
    {{ end -}}
  {{ else if not .p1.IsHome -}}
    {{ template "breadcrumbnav" (dict "p1" .p1.Site.Home "p2" .p2 )  -}}
  {{ end -}}
  {{ $isActive :=  eq .p1 .p2 }}
  <li class="breadcrumb-item{{ if $isActive }} active{{ end }}"
      {{- if $isActive }} aria-current="page"{{ end }}>
    {{ if $isActive -}}
      {{ .p1.LinkTitle -}}
    {{ else -}}
      <a href="{{ .p1.RelPermalink }}">{{ .p1.LinkTitle }}</a>
    {{- end -}}
  </li>
{{- end -}}