docs: def comment_filter(comment_text):
      """
      Passed comment text to be rendered through the function defined
      by the ``COMMENT_FILTER`` setting. If no function is defined
      (the default), Django's ``linebreaksbr`` and ``urlize`` filters
      are used.
      """
      filter_func = settings.COMMENT_FILTER
      if not filter_func:
          def filter_func(s):
              return linebreaksbr(urlize(s, autoescape=True), autoescape=True)
      elif not callable(filter_func):
          filter_func = import_dotted_path(filter_func)
      return filter_func(comment_text)