new_contents: #!/usr/bin/env python
  import re, sys, os
  if len(sys.argv) != 2:
      print >>sys.stderr, "Usage: win.py path/to/WinUser.h"
      sys.exit(1)
  OUT = 'win2.txt'
  TMP = OUT + '.tmp'
  f = open(TMP, 'w')
  try:
      print >>f, '; Automatically generated by "win.py"'
      VK = re.compile('#define\s*VK_(\w+)\s+(\w+)')
      for line in open(sys.argv[1], 'r'):
          m = VK.match(line)
          if m:
              n, i = m.groups()
              i = int(i, 0)
              print >>f, '%d\t%s' % (i, n)
      f.close()
      os.rename(TMP, OUT)
  except:
      try:
          os.unlink(TMP)
      except OSError:
          pass
      raise
  
subject: Add keycode table generator for Windows