docs: def commandify(use_argcomplete=False, exit=True, *args, **kwargs):
      '''Turns decorated functions into command line args
  
      Finds the main_command and all commands and generates command line args
      from these.'''
      parser = CommandifyArgumentParser(*args, **kwargs)
      parser.setup_arguments()
      if use_argcomplete:
          try:
              import argcomplete
          except ImportError:
              print('argcomplete not installed, please install it.')
              parser.exit(status=2)
          # Must happen between setup_arguments() and parse_args().
          argcomplete.autocomplete(parser)
      args = parser.parse_args()
      if exit:
          parser.dispatch_commands()
          parser.exit(0)
      else:
          return parser.dispatch_commands()