nav-item.html

{%- assign item = include.section -%}
{%- assign children = item.children -%}
{%- if page.guide_version -%}
  {%- assign compare_version = page.guide_version -%}
{%- else -%}
  {%- assign compare_version = site.version -%}
{%- endif -%}

{%- unless item.exclude_versions contains compare_version -%}
{%- if item.include_versions.size == nil or item.include_versions contains compare_version or item.include_versions contains 'all' -%}
  {%- assign base = '' -%}
  {%- if item.versionless -%}
    {%- assign base = site.baseurl -%}
  {%- else -%}
    {%- if page.guide_version -%}
      {%- assign base = page.baseurl -%}
    {%- else -%}
      {%- assign base = site.version | prepend: "/guides/v" | prepend: site.baseurl -%}
    {%- endif -%}
  {%- endif -%}
  {%- if item.url contains 'http' -%}
    {%- assign base = '' -%}
  {%- endif -%}

  {%- assign item_url = item.url | prepend: base -%}
  {%- assign compare_url = page.url | prepend: site.baseurl -%}
<li class="{% if compare_url == item_url %}is-selected{% endif %} {{ item.class }} {{ include.itemClass }}" role="menuitem">
  {%- if item.url -%}
  <a href="{{ item_url }}" class="{{ include.labelClass }} {{item.edition}}">{{ item.label }}</a>
  {%- else -%}
  <span class="{{ include.labelClass }} {{item.edition}}">{{ item.label }}</span>
  {%- endif -%}
  {%- if children -%}
  <ul class="{{ include.menuClass }}">
    {%- for child in children -%}
      {%- include layout/nav-item.html section=child itemClass=include.itemClass labelClass=include.labelClass -%}
    {%- endfor -%}
  </ul>
  {%- endif -%}
</li>
{%- endif -%}
{%- endunless -%}