annotate mercurial/node.py @ 18115:6db318a15a12

bundlerepo: use _cacheabletip mechanism in bundlerepo

Instead of preventing any cache write we allow writing cache for all content of
the original repo.

The motivation for this change is to drop the custom _writebranchcache of
bundlerepo to help extraction of the branchmap logic out of localrepo.

# 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 version 2 or any later version.

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])