commit-msg

#!/usr/bin/env python
# $1 is the path to the file containing the commit message.

import sys
import subprocess

def call(cmd):
    p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE)
    return p.communicate()[0]

FILE = sys.argv[1]
BUG = call('git bug').strip()

message = open(FILE).read()

if not message.startswith('bug') and BUG:
    message = 'bug %s, %s' % (BUG, message)

open(FILE, 'w').write(message)