view mercurial/node.py @ 8147:441dc7becd43

win32text: be more careful about rejecting violating changesets

We now try to walk changesets in reverse order from newest to oldest,
so that if we see a file multiple times, we treat the newest version
as canonical.

This should prevent us from rejecting a changegroup that contains an
unacceptable commit followed later by a commit that fixes the problem.

"""
node.py - basic nodeid manipulation for mercurial

Copyright 2005, 2006 Matt Mackall <[e-mail]>

This software may be used and distributed according to the terms
of the GNU General Public License, incorporated herein by reference.
"""

import binascii

nullrev = -1
nullid = "\0" * 20

# This ugly style has a noticeable effect in manifest parsing
hex = binascii.hexlify
bin = binascii.unhexlify

def short(node):
    return hex(node[:6])