ruby--ruby/lib/rdoc/generator/template/darkfish/_sidebar_extends.rhtml

<%- unless klass.extends.empty? then %>
<div id="extends-section" class="nav-section">
  <h3>Extended With Modules</h3>

  <ul class="link-list">
    <%- klass.each_extend do |ext| -%>
  <%- unless String === ext.module then -%>
    <li><a class="extend" href="<%= klass.aref_to ext.module.path %>"><%= ext.module.full_name %></a>
  <%- else -%>
    <li><span class="extend"><%= ext.name %></span>
  <%- end -%>
  <%- end -%>
  </ul>
</div>
<%- end -%>