mercurial/node.py

amend: check for directory renames for both merge parents (issue4516)

Before this change, amending a merge would lose the rename information for file
adding in the second parents and implicitly renamed into a new directory.

In case of the merge, we also look for directory rename data from the second
parent. This seems to fix the bug and does not show other issues from the test
suite.

# 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])