old_contents: #/usr/bin/env python
  
  import watchme
  
  if __name__ == "__main__":
      w = watchme.Watchme()
      w.run()
  
new_contents: #!/usr/bin/env python
  
  import argparse
  
  import watchme
  
  if __name__ == "__main__":
  
      parser = argparse.ArgumentParser()
      group = parser.add_mutually_exclusive_group()
      group.add_argument(
          '--multitail', dest='multitail', action='store_true', default=True,
          help='Take logs from /var/log (syslog). This is the default.'
      )
      group.add_argument(
          '--systemd', dest='systemd', action='store_true', default=False,
          help='Take logs from systemd (journald).'
      )
  
      w = watchme.Watchme()
      w.run(parser.parse_args())
  
subject: update test watcher file