import re

def enforce_commitmsg(ui, repo, hooktype, node=None, source=None, parent1=None, parent2=None, *args, **kwargs):
    cmt = repo[node]
    msg = cmt.description()
    lower_msg = msg.lower()

    if len(cmt.parents()) > 1 or lower_msg.startswith('backed out ') or lower_msg.startswith('back out') or lower_msg.startswith('backout'):
        print "Merge or Backout - not enforcing commit message"
        return None

    task_re = re.compile("^(Task-|Task - |Task -|Task #|Task |Task # |#)([0-9]{1,5}).+?\s*", re.IGNORECASE)
    if task_re.match(msg):
        print "Legit-type commit for #%s" % task_re.match(msg).group(2)
        return None

    print
    print
    print "Your commit message '%s' does not have proper Task ID."
    print "Please try again with a legit message."
    print
    print
    return True