docs: def do_truncate(parser, token):
      """
      Truncates given text (html-aware)
      Sample usage::
  
          {% truncate 60 %}
               {{ some_text }}
          {% more %}
               <a href="asdasd">Read more..</a>
          {% endtruncate %}
      """
      _, count = token.split_contents()
  
      nodelist = parser.parse(('more', 'endtruncate',))
      token = parser.next_token()
      if token.contents == 'more':
          nodelist_more = parser.parse(('endtruncate',))
          parser.delete_first_token()
      else:
          nodelist_more = None
      return TruncateNode(count, nodelist, nodelist_more)