new_contents: #!/usr/bin/env python3
  
  """
  This script is meant to help discover attack types/damages that have not been
  added to Pinobot unixmain.patch.
  
  Example:
  ./find_unimplemented_attacks.py nethack/include/monattk.h pinobot/patch/unixmain.patch
  """
  
  import re
  import sys
  
  AT_RE = re.compile('.*(AT|AD)_([0-9A-Za-z]+).*')
  
  if __name__ == '__main__':
      seen_ats1 = set()
      seen_ats2 = set()
  
      with open(sys.argv[1], 'rt') as f:
          for line in f:
              m = AT_RE.match(line)
              if not m:
                  continue
              seen_ats1.add(f'{m.group(1)}_{m.group(2)}')
  
      with open(sys.argv[2], 'rt') as f:
          for line in f:
              m = AT_RE.match(line)
              if not m:
                  continue
              seen_ats2.add(f'{m.group(1)}_{m.group(2)}')
  
      # What attacks/damages are missing?
      missing = seen_ats1 - seen_ats2
  
      # Go through the first file again, but if it contains a missing entry then
      # print the entire line.
      with open(sys.argv[1], 'rt') as f:
          for line in f:
              for m in missing:
                  if m in line:
                      print(line.rstrip('\n'))
                      break
  
subject: Add the tool that lists all unimplemented AD_/AT_ flags.