if __name__ == '__main__':
  parser = argparse.ArgumentParser(description=(
      'Convert MSYS paths in environment variables to Windows paths.'))
  parser.add_argument('--blacklist',
                      nargs='*',
                      help='List of variables to ignore')
  parser.add_argument('--whitelist-prefix',
                      nargs='*',
                      help='Prefix for variables to include')
  args = parser.parse_args()