corruption: backout changeset 49fd21f32695 (issue6528)
inverting the parent is masking copy information leading to bad content being
fetched and bad status result.
Since 49fd21f32695, exchange can actively swap these parent corrupting existing
changesets and triggering the corruption.
Data corruption are considered critical so backing this out and doing and
unscheduled release seems in order.
Differential Revision: https://phab.mercurial-scm.org/D10995
# Test the config layer generated by environment variables
from __future__ import absolute_import, print_function
import os
from mercurial import (
encoding,
extensions,
rcutil,
ui as uimod,
util,
)
from mercurial.utils import procutil
testtmp = encoding.environ[b'TESTTMP']
# prepare hgrc files
def join(name):
return os.path.join(testtmp, name)
with open(join(b'sysrc'), 'wb') as f:
f.write(b'[ui]\neditor=e0\n[pager]\npager=p0\n')
with open(join(b'userrc'), 'wb') as f:
f.write(b'[ui]\neditor=e1')
# replace rcpath functions so they point to the files above
def systemrcpath():
return [join(b'sysrc')]
def userrcpath():
return [join(b'userrc')]
extensions.wrapfunction(rcutil, 'default_rc_resources', lambda orig: [])
rcutil.systemrcpath = systemrcpath
rcutil.userrcpath = userrcpath
# utility to print configs
def printconfigs(env):
encoding.environ = env
rcutil._rccomponents = None # reset cache
ui = uimod.ui.load()
for section, name, value in ui.walkconfig():
source = ui.configsource(section, name)
procutil.stdout.write(
b'%s.%s=%s # %s\n' % (section, name, value, util.pconvert(source))
)
procutil.stdout.write(b'\n')
# environment variable overrides
printconfigs({})
printconfigs({b'EDITOR': b'e2', b'PAGER': b'p2'})