docs: def appname(path=None):
      """
  Return a useful application name based on the program argument.
  A special case maps 'mod_wsgi' to a more appropriate name so
  web applications show up as our own.
  """
      if path is None:
          path = sys.argv[0]
      name = os.path.basename(os.path.splitext(path)[0])
      if name == 'mod_wsgi':
          name = 'nvn_web'                                                                        # pragma: no cover
      return name