a python script for prepare-commit-msg that extracts the branch name and inserts it as the first word of the commit message title

prepare-commit-msg

#!/usr/bin/python
import commands
import sys
import fileinput


def get_task_name(branch):
    task = branch.rsplit("/",1)[-1]
    task = task.split("_")[0]
    if task.count('-') > 1:
        task = '-'.join(task.split('-')[:2])
    return task


branch_name = get_task_name(commands.getoutput("git symbolic-ref -q HEAD"))

for line in fileinput.input(sys.argv[1], inplace=1):
    if fileinput.isfirstline() and line.strip() == '':
        print branch_name
    print line,