new_contents: #!/usr/bin/env python2
  
  import argparse
  import multitail
  
  parser = argparse.ArgumentParser()
  parser.add_argument('files', type=str, nargs='+')
  args = parser.parse_args()
  
  for fn, line in multitail.multitail(args.files):
    print("{}: {}".format(fn,line.strip()))
  
subject: Add mt.py