skooner/_includes/docs_ul.html

{% assign items = include.items | split: ' ' %}

<ul style="list-style-type: none; padding: 0; margin-left: 0">
{% for item in items %}
  {% assign item_url = item | prepend:'/docs/' | append: '/' %}

  {% if item_url == page.url %}
    {% assign c = 'current' %}
  {% else %}
    {% assign c = '' %}
  {% endif %}
  
  {% for p in site.pages %}
    {% if p.url == item_url %}
      <li class="{{ c }}"><a href="{{ site.baseurl }}{{ p.url }}">{{ p.title }}</a></li>
    {% endif %}
  {% endfor %}

{% endfor %}  
</ul>