docs: def normpath(path, keep_trailing=False):
      """Really normalize the path by adding a missing leading slash."""
      new_path = k_paths.normpath(path)
      if keep_trailing and path.endswith("/") and not new_path.endswith("/"):
          new_path = new_path + "/"
      if not new_path.startswith('/'):
          return '/' + new_path
      return new_path