Handle KeyboardInterrupt consistently in python scripts

commit_queue.py

 #!/usr/bin/env python
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Access the commit queue from the command line.
 """
 
 __version__ = '0.1'
 
@@ skipping 163 matching lines @@
       gen_usage(parser, args[0])
       return command(parser, args[1:])
 
   # Not a known command. Default to help.
   gen_usage(parser, 'help')
   return CMDhelp(parser, args)
 
 
 if __name__ == "__main__":
   fix_encoding.fix_encoding()
-  sys.exit(main())
+  try:
+    sys.exit(main())
+  except KeyboardInterrupt:
+    sys.stderr.write('interrupted\n')
+    sys.exit(1)