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discovery: prevent crash caused by prune marker having no parent data...
discovery: prevent crash caused by prune marker having no parent data If a marker has no parent information, parents field is set to None, which caused TypeError. I think this shouldn't normally happen, but somehow I have such marker in my repo.

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mergeutil.py
22 lines | 701 B | text/x-python | PythonLexer
# mergeutil.py - help for merge processing in mercurial
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
from .i18n import _
from . import (
error,
)
def checkunresolved(ms):
if list(ms.unresolved()):
raise error.Abort(_("unresolved merge conflicts "
"(see 'hg help resolve')"))
if ms.mdstate() != 's' or list(ms.driverresolved()):
raise error.Abort(_('driver-resolved merge conflicts'),
hint=_('run "hg resolve --all" to resolve'))