narrow: fix crash when restoring backup in legacy repo
Using --addremove when committing in an old repo (before we started
keeping .hg/narrowspec.dirstate) results in a crash. The test
case modified in this patch would crash like this:
abort: $ENOENT$
The issue is that when the dirstateguard is aborted, it tries to
restore the backup of .hg/narrowspec.dirstate. However, since we were
in an old repo, that file did not get created when the dirstateguard
was created. Note that the dirstateguard is not used unless
--addremove is passed.
This patch fixes the bug by making restorewcbackup() not fail if the
backup doesn't exist. I also made clearwcbackup() safe, just in case.
Differential Revision: https://phab.mercurial-scm.org/D5634
# scmutil.py - Mercurial core utility functions
#
# Copyright Matt Mackall <mpm@selenic.com> and other
#
# 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 . import repoview
def cachetocopy(srcrepo):
"""return the list of cache file valuable to copy during a clone"""
# In local clones we're copying all nodes, not just served
# ones. Therefore copy all branch caches over.
cachefiles = ['branch2']
cachefiles += ['branch2-%s' % f for f in repoview.filtertable]
cachefiles += ['rbc-names-v1', 'rbc-revs-v1']
cachefiles += ['tags2']
cachefiles += ['tags2-%s' % f for f in repoview.filtertable]
cachefiles += ['hgtagsfnodes1']
return cachefiles