commit: fix a typo ("form p1" -> "from p1")

Differential Revision: https://phab.mercurial-scm.org/D6375

mercurial/localrepo.py

@@ -1,3143 +1,3143
 # localrepo.py - read/write repository class for mercurial
 #
 # Copyright 2005-2007 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.
 
 from __future__ import absolute_import
 
 import errno
 import hashlib
 import os
 import random
 import sys
 import time
 import weakref
 
 from .i18n import _
 from .node import (
     bin,
     hex,
     nullid,
     nullrev,
     short,
 )
 from . import (
     bookmarks,
     branchmap,
     bundle2,
     changegroup,
     changelog,
     color,
     context,
     dirstate,
     dirstateguard,
     discovery,
     encoding,
     error,
     exchange,
     extensions,
     filelog,
     hook,
     lock as lockmod,
     manifest,
     match as matchmod,
     merge as mergemod,
     mergeutil,
     namespaces,
     narrowspec,
     obsolete,
     pathutil,
     phases,
     pushkey,
     pycompat,
     repository,
     repoview,
     revset,
     revsetlang,
     scmutil,
     sparse,
     store as storemod,
     subrepoutil,
     tags as tagsmod,
     transaction,
     txnutil,
     util,
     vfs as vfsmod,
 )
 from .utils import (
     interfaceutil,
     procutil,
     stringutil,
 )
 
 from .revlogutils import (
     constants as revlogconst,
 )
 
 release = lockmod.release
 urlerr = util.urlerr
 urlreq = util.urlreq
 
 # set of (path, vfs-location) tuples. vfs-location is:
 # - 'plain for vfs relative paths
 # - '' for svfs relative paths
 _cachedfiles = set()
 
 class _basefilecache(scmutil.filecache):
     """All filecache usage on repo are done for logic that should be unfiltered
     """
     def __get__(self, repo, type=None):
         if repo is None:
             return self
         # proxy to unfiltered __dict__ since filtered repo has no entry
         unfi = repo.unfiltered()
         try:
             return unfi.__dict__[self.sname]
         except KeyError:
             pass
         return super(_basefilecache, self).__get__(unfi, type)
 
     def set(self, repo, value):
         return super(_basefilecache, self).set(repo.unfiltered(), value)
 
 class repofilecache(_basefilecache):
     """filecache for files in .hg but outside of .hg/store"""
     def __init__(self, *paths):
         super(repofilecache, self).__init__(*paths)
         for path in paths:
             _cachedfiles.add((path, 'plain'))
 
     def join(self, obj, fname):
         return obj.vfs.join(fname)
 
 class storecache(_basefilecache):
     """filecache for files in the store"""
     def __init__(self, *paths):
         super(storecache, self).__init__(*paths)
         for path in paths:
             _cachedfiles.add((path, ''))
 
     def join(self, obj, fname):
         return obj.sjoin(fname)
 
 def isfilecached(repo, name):
     """check if a repo has already cached "name" filecache-ed property
 
     This returns (cachedobj-or-None, iscached) tuple.
     """
     cacheentry = repo.unfiltered()._filecache.get(name, None)
     if not cacheentry:
         return None, False
     return cacheentry.obj, True
 
 class unfilteredpropertycache(util.propertycache):
     """propertycache that apply to unfiltered repo only"""
 
     def __get__(self, repo, type=None):
         unfi = repo.unfiltered()
         if unfi is repo:
             return super(unfilteredpropertycache, self).__get__(unfi)
         return getattr(unfi, self.name)
 
 class filteredpropertycache(util.propertycache):
     """propertycache that must take filtering in account"""
 
     def cachevalue(self, obj, value):
         object.__setattr__(obj, self.name, value)
 
 
 def hasunfilteredcache(repo, name):
     """check if a repo has an unfilteredpropertycache value for <name>"""
     return name in vars(repo.unfiltered())
 
 def unfilteredmethod(orig):
     """decorate method that always need to be run on unfiltered version"""
     def wrapper(repo, *args, **kwargs):
         return orig(repo.unfiltered(), *args, **kwargs)
     return wrapper
 
 moderncaps = {'lookup', 'branchmap', 'pushkey', 'known', 'getbundle',
               'unbundle'}
 legacycaps = moderncaps.union({'changegroupsubset'})
 
 @interfaceutil.implementer(repository.ipeercommandexecutor)
 class localcommandexecutor(object):
     def __init__(self, peer):
         self._peer = peer
         self._sent = False
         self._closed = False
 
     def __enter__(self):
         return self
 
     def __exit__(self, exctype, excvalue, exctb):
         self.close()
 
     def callcommand(self, command, args):
         if self._sent:
             raise error.ProgrammingError('callcommand() cannot be used after '
                                          'sendcommands()')
 
         if self._closed:
             raise error.ProgrammingError('callcommand() cannot be used after '
                                          'close()')
 
         # We don't need to support anything fancy. Just call the named
         # method on the peer and return a resolved future.
         fn = getattr(self._peer, pycompat.sysstr(command))
 
         f = pycompat.futures.Future()
 
         try:
             result = fn(**pycompat.strkwargs(args))
         except Exception:
             pycompat.future_set_exception_info(f, sys.exc_info()[1:])
         else:
             f.set_result(result)
 
         return f
 
     def sendcommands(self):
         self._sent = True
 
     def close(self):
         self._closed = True
 
 @interfaceutil.implementer(repository.ipeercommands)
 class localpeer(repository.peer):
     '''peer for a local repo; reflects only the most recent API'''
 
     def __init__(self, repo, caps=None):
         super(localpeer, self).__init__()
 
         if caps is None:
             caps = moderncaps.copy()
         self._repo = repo.filtered('served')
         self.ui = repo.ui
         self._caps = repo._restrictcapabilities(caps)
 
     # Begin of _basepeer interface.
 
     def url(self):
         return self._repo.url()
 
     def local(self):
         return self._repo
 
     def peer(self):
         return self
 
     def canpush(self):
         return True
 
     def close(self):
         self._repo.close()
 
     # End of _basepeer interface.
 
     # Begin of _basewirecommands interface.
 
     def branchmap(self):
         return self._repo.branchmap()
 
     def capabilities(self):
         return self._caps
 
     def clonebundles(self):
         return self._repo.tryread('clonebundles.manifest')
 
     def debugwireargs(self, one, two, three=None, four=None, five=None):
         """Used to test argument passing over the wire"""
         return "%s %s %s %s %s" % (one, two, pycompat.bytestr(three),
                                    pycompat.bytestr(four),
                                    pycompat.bytestr(five))
 
     def getbundle(self, source, heads=None, common=None, bundlecaps=None,
                   **kwargs):
         chunks = exchange.getbundlechunks(self._repo, source, heads=heads,
                                           common=common, bundlecaps=bundlecaps,
                                           **kwargs)[1]
         cb = util.chunkbuffer(chunks)
 
         if exchange.bundle2requested(bundlecaps):
             # When requesting a bundle2, getbundle returns a stream to make the
             # wire level function happier. We need to build a proper object
             # from it in local peer.
             return bundle2.getunbundler(self.ui, cb)
         else:
             return changegroup.getunbundler('01', cb, None)
 
     def heads(self):
         return self._repo.heads()
 
     def known(self, nodes):
         return self._repo.known(nodes)
 
     def listkeys(self, namespace):
         return self._repo.listkeys(namespace)
 
     def lookup(self, key):
         return self._repo.lookup(key)
 
     def pushkey(self, namespace, key, old, new):
         return self._repo.pushkey(namespace, key, old, new)
 
     def stream_out(self):
         raise error.Abort(_('cannot perform stream clone against local '
                             'peer'))
 
     def unbundle(self, bundle, heads, url):
         """apply a bundle on a repo
 
         This function handles the repo locking itself."""
         try:
             try:
                 bundle = exchange.readbundle(self.ui, bundle, None)
                 ret = exchange.unbundle(self._repo, bundle, heads, 'push', url)
                 if util.safehasattr(ret, 'getchunks'):
                     # This is a bundle20 object, turn it into an unbundler.
                     # This little dance should be dropped eventually when the
                     # API is finally improved.
                     stream = util.chunkbuffer(ret.getchunks())
                     ret = bundle2.getunbundler(self.ui, stream)
                 return ret
             except Exception as exc:
                 # If the exception contains output salvaged from a bundle2
                 # reply, we need to make sure it is printed before continuing
                 # to fail. So we build a bundle2 with such output and consume
                 # it directly.
                 #
                 # This is not very elegant but allows a "simple" solution for
                 # issue4594
                 output = getattr(exc, '_bundle2salvagedoutput', ())
                 if output:
                     bundler = bundle2.bundle20(self._repo.ui)
                     for out in output:
                         bundler.addpart(out)
                     stream = util.chunkbuffer(bundler.getchunks())
                     b = bundle2.getunbundler(self.ui, stream)
                     bundle2.processbundle(self._repo, b)
                 raise
         except error.PushRaced as exc:
             raise error.ResponseError(_('push failed:'),
                                       stringutil.forcebytestr(exc))
 
     # End of _basewirecommands interface.
 
     # Begin of peer interface.
 
     def commandexecutor(self):
         return localcommandexecutor(self)
 
     # End of peer interface.
 
 @interfaceutil.implementer(repository.ipeerlegacycommands)
 class locallegacypeer(localpeer):
     '''peer extension which implements legacy methods too; used for tests with
     restricted capabilities'''
 
     def __init__(self, repo):
         super(locallegacypeer, self).__init__(repo, caps=legacycaps)
 
     # Begin of baselegacywirecommands interface.
 
     def between(self, pairs):
         return self._repo.between(pairs)
 
     def branches(self, nodes):
         return self._repo.branches(nodes)
 
     def changegroup(self, nodes, source):
         outgoing = discovery.outgoing(self._repo, missingroots=nodes,
                                       missingheads=self._repo.heads())
         return changegroup.makechangegroup(self._repo, outgoing, '01', source)
 
     def changegroupsubset(self, bases, heads, source):
         outgoing = discovery.outgoing(self._repo, missingroots=bases,
                                       missingheads=heads)
         return changegroup.makechangegroup(self._repo, outgoing, '01', source)
 
     # End of baselegacywirecommands interface.
 
 # Increment the sub-version when the revlog v2 format changes to lock out old
 # clients.
 REVLOGV2_REQUIREMENT = 'exp-revlogv2.1'
 
 # A repository with the sparserevlog feature will have delta chains that
 # can spread over a larger span. Sparse reading cuts these large spans into
 # pieces, so that each piece isn't too big.
 # Without the sparserevlog capability, reading from the repository could use
 # huge amounts of memory, because the whole span would be read at once,
 # including all the intermediate revisions that aren't pertinent for the chain.
 # This is why once a repository has enabled sparse-read, it becomes required.
 SPARSEREVLOG_REQUIREMENT = 'sparserevlog'
 
 # Functions receiving (ui, features) that extensions can register to impact
 # the ability to load repositories with custom requirements. Only
 # functions defined in loaded extensions are called.
 #
 # The function receives a set of requirement strings that the repository
 # is capable of opening. Functions will typically add elements to the
 # set to reflect that the extension knows how to handle that requirements.
 featuresetupfuncs = set()
 
 def makelocalrepository(baseui, path, intents=None):
     """Create a local repository object.
 
     Given arguments needed to construct a local repository, this function
     performs various early repository loading functionality (such as
     reading the ``.hg/requires`` and ``.hg/hgrc`` files), validates that
     the repository can be opened, derives a type suitable for representing
     that repository, and returns an instance of it.
 
     The returned object conforms to the ``repository.completelocalrepository``
     interface.
 
     The repository type is derived by calling a series of factory functions
     for each aspect/interface of the final repository. These are defined by
     ``REPO_INTERFACES``.
 
     Each factory function is called to produce a type implementing a specific
     interface. The cumulative list of returned types will be combined into a
     new type and that type will be instantiated to represent the local
     repository.
 
     The factory functions each receive various state that may be consulted
     as part of deriving a type.
 
     Extensions should wrap these factory functions to customize repository type
     creation. Note that an extension's wrapped function may be called even if
     that extension is not loaded for the repo being constructed. Extensions
     should check if their ``__name__`` appears in the
     ``extensionmodulenames`` set passed to the factory function and no-op if
     not.
     """
     ui = baseui.copy()
     # Prevent copying repo configuration.
     ui.copy = baseui.copy
 
     # Working directory VFS rooted at repository root.
     wdirvfs = vfsmod.vfs(path, expandpath=True, realpath=True)
 
     # Main VFS for .hg/ directory.
     hgpath = wdirvfs.join(b'.hg')
     hgvfs = vfsmod.vfs(hgpath, cacheaudited=True)
 
     # The .hg/ path should exist and should be a directory. All other
     # cases are errors.
     if not hgvfs.isdir():
         try:
             hgvfs.stat()
         except OSError as e:
             if e.errno != errno.ENOENT:
                 raise
 
         raise error.RepoError(_(b'repository %s not found') % path)
 
     # .hg/requires file contains a newline-delimited list of
     # features/capabilities the opener (us) must have in order to use
     # the repository. This file was introduced in Mercurial 0.9.2,
     # which means very old repositories may not have one. We assume
     # a missing file translates to no requirements.
     try:
         requirements = set(hgvfs.read(b'requires').splitlines())
     except IOError as e:
         if e.errno != errno.ENOENT:
             raise
         requirements = set()
 
     # The .hg/hgrc file may load extensions or contain config options
     # that influence repository construction. Attempt to load it and
     # process any new extensions that it may have pulled in.
     if loadhgrc(ui, wdirvfs, hgvfs, requirements):
         afterhgrcload(ui, wdirvfs, hgvfs, requirements)
         extensions.loadall(ui)
         extensions.populateui(ui)
 
     # Set of module names of extensions loaded for this repository.
     extensionmodulenames = {m.__name__ for n, m in extensions.extensions(ui)}
 
     supportedrequirements = gathersupportedrequirements(ui)
 
     # We first validate the requirements are known.
     ensurerequirementsrecognized(requirements, supportedrequirements)
 
     # Then we validate that the known set is reasonable to use together.
     ensurerequirementscompatible(ui, requirements)
 
     # TODO there are unhandled edge cases related to opening repositories with
     # shared storage. If storage is shared, we should also test for requirements
     # compatibility in the pointed-to repo. This entails loading the .hg/hgrc in
     # that repo, as that repo may load extensions needed to open it. This is a
     # bit complicated because we don't want the other hgrc to overwrite settings
     # in this hgrc.
     #
     # This bug is somewhat mitigated by the fact that we copy the .hg/requires
     # file when sharing repos. But if a requirement is added after the share is
     # performed, thereby introducing a new requirement for the opener, we may
     # will not see that and could encounter a run-time error interacting with
     # that shared store since it has an unknown-to-us requirement.
 
     # At this point, we know we should be capable of opening the repository.
     # Now get on with doing that.
 
     features = set()
 
     # The "store" part of the repository holds versioned data. How it is
     # accessed is determined by various requirements. The ``shared`` or
     # ``relshared`` requirements indicate the store lives in the path contained
     # in the ``.hg/sharedpath`` file. This is an absolute path for
     # ``shared`` and relative to ``.hg/`` for ``relshared``.
     if b'shared' in requirements or b'relshared' in requirements:
         sharedpath = hgvfs.read(b'sharedpath').rstrip(b'\n')
         if b'relshared' in requirements:
             sharedpath = hgvfs.join(sharedpath)
 
         sharedvfs = vfsmod.vfs(sharedpath, realpath=True)
 
         if not sharedvfs.exists():
             raise error.RepoError(_(b'.hg/sharedpath points to nonexistent '
                                     b'directory %s') % sharedvfs.base)
 
         features.add(repository.REPO_FEATURE_SHARED_STORAGE)
 
         storebasepath = sharedvfs.base
         cachepath = sharedvfs.join(b'cache')
     else:
         storebasepath = hgvfs.base
         cachepath = hgvfs.join(b'cache')
     wcachepath = hgvfs.join(b'wcache')
 
 
     # The store has changed over time and the exact layout is dictated by
     # requirements. The store interface abstracts differences across all
     # of them.
     store = makestore(requirements, storebasepath,
                       lambda base: vfsmod.vfs(base, cacheaudited=True))
     hgvfs.createmode = store.createmode
 
     storevfs = store.vfs
     storevfs.options = resolvestorevfsoptions(ui, requirements, features)
 
     # The cache vfs is used to manage cache files.
     cachevfs = vfsmod.vfs(cachepath, cacheaudited=True)
     cachevfs.createmode = store.createmode
     # The cache vfs is used to manage cache files related to the working copy
     wcachevfs = vfsmod.vfs(wcachepath, cacheaudited=True)
     wcachevfs.createmode = store.createmode
 
     # Now resolve the type for the repository object. We do this by repeatedly
     # calling a factory function to produces types for specific aspects of the
     # repo's operation. The aggregate returned types are used as base classes
     # for a dynamically-derived type, which will represent our new repository.
 
     bases = []
     extrastate = {}
 
     for iface, fn in REPO_INTERFACES:
         # We pass all potentially useful state to give extensions tons of
         # flexibility.
         typ = fn()(ui=ui,
                  intents=intents,
                  requirements=requirements,
                  features=features,
                  wdirvfs=wdirvfs,
                  hgvfs=hgvfs,
                  store=store,
                  storevfs=storevfs,
                  storeoptions=storevfs.options,
                  cachevfs=cachevfs,
                  wcachevfs=wcachevfs,
                  extensionmodulenames=extensionmodulenames,
                  extrastate=extrastate,
                  baseclasses=bases)
 
         if not isinstance(typ, type):
             raise error.ProgrammingError('unable to construct type for %s' %
                                          iface)
 
         bases.append(typ)
 
     # type() allows you to use characters in type names that wouldn't be
     # recognized as Python symbols in source code. We abuse that to add
     # rich information about our constructed repo.
     name = pycompat.sysstr(b'derivedrepo:%s<%s>' % (
         wdirvfs.base,
         b','.join(sorted(requirements))))
 
     cls = type(name, tuple(bases), {})
 
     return cls(
         baseui=baseui,
         ui=ui,
         origroot=path,
         wdirvfs=wdirvfs,
         hgvfs=hgvfs,
         requirements=requirements,
         supportedrequirements=supportedrequirements,
         sharedpath=storebasepath,
         store=store,
         cachevfs=cachevfs,
         wcachevfs=wcachevfs,
         features=features,
         intents=intents)
 
 def loadhgrc(ui, wdirvfs, hgvfs, requirements):
     """Load hgrc files/content into a ui instance.
 
     This is called during repository opening to load any additional
     config files or settings relevant to the current repository.
 
     Returns a bool indicating whether any additional configs were loaded.
 
     Extensions should monkeypatch this function to modify how per-repo
     configs are loaded. For example, an extension may wish to pull in
     configs from alternate files or sources.
     """
     try:
         ui.readconfig(hgvfs.join(b'hgrc'), root=wdirvfs.base)
         return True
     except IOError:
         return False
 
 def afterhgrcload(ui, wdirvfs, hgvfs, requirements):
     """Perform additional actions after .hg/hgrc is loaded.
 
     This function is called during repository loading immediately after
     the .hg/hgrc file is loaded and before per-repo extensions are loaded.
 
     The function can be used to validate configs, automatically add
     options (including extensions) based on requirements, etc.
     """
 
     # Map of requirements to list of extensions to load automatically when
     # requirement is present.
     autoextensions = {
         b'largefiles': [b'largefiles'],
         b'lfs': [b'lfs'],
     }
 
     for requirement, names in sorted(autoextensions.items()):
         if requirement not in requirements:
             continue
 
         for name in names:
             if not ui.hasconfig(b'extensions', name):
                 ui.setconfig(b'extensions', name, b'', source='autoload')
 
 def gathersupportedrequirements(ui):
     """Determine the complete set of recognized requirements."""
     # Start with all requirements supported by this file.
     supported = set(localrepository._basesupported)
 
     # Execute ``featuresetupfuncs`` entries if they belong to an extension
     # relevant to this ui instance.
     modules = {m.__name__ for n, m in extensions.extensions(ui)}
 
     for fn in featuresetupfuncs:
         if fn.__module__ in modules:
             fn(ui, supported)
 
     # Add derived requirements from registered compression engines.
     for name in util.compengines:
         engine = util.compengines[name]
         if engine.available() and engine.revlogheader():
             supported.add(b'exp-compression-%s' % name)
             if engine.name() == 'zstd':
                 supported.add(b'revlog-compression-zstd')
 
     return supported
 
 def ensurerequirementsrecognized(requirements, supported):
     """Validate that a set of local requirements is recognized.
 
     Receives a set of requirements. Raises an ``error.RepoError`` if there
     exists any requirement in that set that currently loaded code doesn't
     recognize.
 
     Returns a set of supported requirements.
     """
     missing = set()
 
     for requirement in requirements:
         if requirement in supported:
             continue
 
         if not requirement or not requirement[0:1].isalnum():
             raise error.RequirementError(_(b'.hg/requires file is corrupt'))
 
         missing.add(requirement)
 
     if missing:
         raise error.RequirementError(
             _(b'repository requires features unknown to this Mercurial: %s') %
             b' '.join(sorted(missing)),
             hint=_(b'see https://mercurial-scm.org/wiki/MissingRequirement '
                    b'for more information'))
 
 def ensurerequirementscompatible(ui, requirements):
     """Validates that a set of recognized requirements is mutually compatible.
 
     Some requirements may not be compatible with others or require
     config options that aren't enabled. This function is called during
     repository opening to ensure that the set of requirements needed
     to open a repository is sane and compatible with config options.
 
     Extensions can monkeypatch this function to perform additional
     checking.
 
     ``error.RepoError`` should be raised on failure.
     """
     if b'exp-sparse' in requirements and not sparse.enabled:
         raise error.RepoError(_(b'repository is using sparse feature but '
                                 b'sparse is not enabled; enable the '
                                 b'"sparse" extensions to access'))
 
 def makestore(requirements, path, vfstype):
     """Construct a storage object for a repository."""
     if b'store' in requirements:
         if b'fncache' in requirements:
             return storemod.fncachestore(path, vfstype,
                                          b'dotencode' in requirements)
 
         return storemod.encodedstore(path, vfstype)
 
     return storemod.basicstore(path, vfstype)
 
 def resolvestorevfsoptions(ui, requirements, features):
     """Resolve the options to pass to the store vfs opener.
 
     The returned dict is used to influence behavior of the storage layer.
     """
     options = {}
 
     if b'treemanifest' in requirements:
         options[b'treemanifest'] = True
 
     # experimental config: format.manifestcachesize
     manifestcachesize = ui.configint(b'format', b'manifestcachesize')
     if manifestcachesize is not None:
         options[b'manifestcachesize'] = manifestcachesize
 
     # In the absence of another requirement superseding a revlog-related
     # requirement, we have to assume the repo is using revlog version 0.
     # This revlog format is super old and we don't bother trying to parse
     # opener options for it because those options wouldn't do anything
     # meaningful on such old repos.
     if b'revlogv1' in requirements or REVLOGV2_REQUIREMENT in requirements:
         options.update(resolverevlogstorevfsoptions(ui, requirements, features))
 
     return options
 
 def resolverevlogstorevfsoptions(ui, requirements, features):
     """Resolve opener options specific to revlogs."""
 
     options = {}
     options[b'flagprocessors'] = {}
 
     if b'revlogv1' in requirements:
         options[b'revlogv1'] = True
     if REVLOGV2_REQUIREMENT in requirements:
         options[b'revlogv2'] = True
 
     if b'generaldelta' in requirements:
         options[b'generaldelta'] = True
 
     # experimental config: format.chunkcachesize
     chunkcachesize = ui.configint(b'format', b'chunkcachesize')
     if chunkcachesize is not None:
         options[b'chunkcachesize'] = chunkcachesize
 
     deltabothparents = ui.configbool(b'storage',
                                      b'revlog.optimize-delta-parent-choice')
     options[b'deltabothparents'] = deltabothparents
 
     lazydelta = ui.configbool(b'storage', b'revlog.reuse-external-delta')
     lazydeltabase = False
     if lazydelta:
         lazydeltabase = ui.configbool(b'storage',
                                       b'revlog.reuse-external-delta-parent')
     if lazydeltabase is None:
         lazydeltabase = not scmutil.gddeltaconfig(ui)
     options[b'lazydelta'] = lazydelta
     options[b'lazydeltabase'] = lazydeltabase
 
     chainspan = ui.configbytes(b'experimental', b'maxdeltachainspan')
     if 0 <= chainspan:
         options[b'maxdeltachainspan'] = chainspan
 
     mmapindexthreshold = ui.configbytes(b'experimental',
                                         b'mmapindexthreshold')
     if mmapindexthreshold is not None:
         options[b'mmapindexthreshold'] = mmapindexthreshold
 
     withsparseread = ui.configbool(b'experimental', b'sparse-read')
     srdensitythres = float(ui.config(b'experimental',
                                      b'sparse-read.density-threshold'))
     srmingapsize = ui.configbytes(b'experimental',
                                   b'sparse-read.min-gap-size')
     options[b'with-sparse-read'] = withsparseread
     options[b'sparse-read-density-threshold'] = srdensitythres
     options[b'sparse-read-min-gap-size'] = srmingapsize
 
     sparserevlog = SPARSEREVLOG_REQUIREMENT in requirements
     options[b'sparse-revlog'] = sparserevlog
     if sparserevlog:
         options[b'generaldelta'] = True
 
     maxchainlen = None
     if sparserevlog:
         maxchainlen = revlogconst.SPARSE_REVLOG_MAX_CHAIN_LENGTH
     # experimental config: format.maxchainlen
     maxchainlen = ui.configint(b'format', b'maxchainlen', maxchainlen)
     if maxchainlen is not None:
         options[b'maxchainlen'] = maxchainlen
 
     for r in requirements:
         # we allow multiple compression engine requirement to co-exist because
         # strickly speaking, revlog seems to support mixed compression style.
         #
         # The compression used for new entries will be "the last one"
         prefix = r.startswith
         if prefix('revlog-compression-') or prefix('exp-compression-'):
             options[b'compengine'] = r.split('-', 2)[2]
 
     options[b'zlib.level'] = ui.configint(b'storage', b'revlog.zlib.level')
     if options[b'zlib.level'] is not None:
         if not (0 <= options[b'zlib.level'] <= 9):
             msg = _('invalid value for `storage.revlog.zlib.level` config: %d')
             raise error.Abort(msg % options[b'zlib.level'])
     options[b'zstd.level'] = ui.configint(b'storage', b'revlog.zstd.level')
     if options[b'zstd.level'] is not None:
         if not (0 <= options[b'zstd.level'] <= 22):
             msg = _('invalid value for `storage.revlog.zstd.level` config: %d')
             raise error.Abort(msg % options[b'zstd.level'])
 
     if repository.NARROW_REQUIREMENT in requirements:
         options[b'enableellipsis'] = True
 
     return options
 
 def makemain(**kwargs):
     """Produce a type conforming to ``ilocalrepositorymain``."""
     return localrepository
 
 @interfaceutil.implementer(repository.ilocalrepositoryfilestorage)
 class revlogfilestorage(object):
     """File storage when using revlogs."""
 
     def file(self, path):
         if path[0] == b'/':
             path = path[1:]
 
         return filelog.filelog(self.svfs, path)
 
 @interfaceutil.implementer(repository.ilocalrepositoryfilestorage)
 class revlognarrowfilestorage(object):
     """File storage when using revlogs and narrow files."""
 
     def file(self, path):
         if path[0] == b'/':
             path = path[1:]
 
         return filelog.narrowfilelog(self.svfs, path, self._storenarrowmatch)
 
 def makefilestorage(requirements, features, **kwargs):
     """Produce a type conforming to ``ilocalrepositoryfilestorage``."""
     features.add(repository.REPO_FEATURE_REVLOG_FILE_STORAGE)
     features.add(repository.REPO_FEATURE_STREAM_CLONE)
 
     if repository.NARROW_REQUIREMENT in requirements:
         return revlognarrowfilestorage
     else:
         return revlogfilestorage
 
 # List of repository interfaces and factory functions for them. Each
 # will be called in order during ``makelocalrepository()`` to iteratively
 # derive the final type for a local repository instance. We capture the
 # function as a lambda so we don't hold a reference and the module-level
 # functions can be wrapped.
 REPO_INTERFACES = [
     (repository.ilocalrepositorymain, lambda: makemain),
     (repository.ilocalrepositoryfilestorage, lambda: makefilestorage),
 ]
 
 @interfaceutil.implementer(repository.ilocalrepositorymain)
 class localrepository(object):
     """Main class for representing local repositories.
 
     All local repositories are instances of this class.
 
     Constructed on its own, instances of this class are not usable as
     repository objects. To obtain a usable repository object, call
     ``hg.repository()``, ``localrepo.instance()``, or
     ``localrepo.makelocalrepository()``. The latter is the lowest-level.
     ``instance()`` adds support for creating new repositories.
     ``hg.repository()`` adds more extension integration, including calling
     ``reposetup()``. Generally speaking, ``hg.repository()`` should be
     used.
     """
 
     # obsolete experimental requirements:
     #  - manifestv2: An experimental new manifest format that allowed
     #    for stem compression of long paths. Experiment ended up not
     #    being successful (repository sizes went up due to worse delta
     #    chains), and the code was deleted in 4.6.
     supportedformats = {
         'revlogv1',
         'generaldelta',
         'treemanifest',
         REVLOGV2_REQUIREMENT,
         SPARSEREVLOG_REQUIREMENT,
     }
     _basesupported = supportedformats | {
         'store',
         'fncache',
         'shared',
         'relshared',
         'dotencode',
         'exp-sparse',
         'internal-phase'
     }
 
     # list of prefix for file which can be written without 'wlock'
     # Extensions should extend this list when needed
     _wlockfreeprefix = {
         # We migh consider requiring 'wlock' for the next
         # two, but pretty much all the existing code assume
         # wlock is not needed so we keep them excluded for
         # now.
         'hgrc',
         'requires',
         # XXX cache is a complicatged business someone
         # should investigate this in depth at some point
         'cache/',
         # XXX shouldn't be dirstate covered by the wlock?
         'dirstate',
         # XXX bisect was still a bit too messy at the time
         # this changeset was introduced. Someone should fix
         # the remainig bit and drop this line
         'bisect.state',
     }
 
     def __init__(self, baseui, ui, origroot, wdirvfs, hgvfs, requirements,
                  supportedrequirements, sharedpath, store, cachevfs, wcachevfs,
                  features, intents=None):
         """Create a new local repository instance.
 
         Most callers should use ``hg.repository()``, ``localrepo.instance()``,
         or ``localrepo.makelocalrepository()`` for obtaining a new repository
         object.
 
         Arguments:
 
         baseui
            ``ui.ui`` instance that ``ui`` argument was based off of.
 
         ui
            ``ui.ui`` instance for use by the repository.
 
         origroot
            ``bytes`` path to working directory root of this repository.
 
         wdirvfs
            ``vfs.vfs`` rooted at the working directory.
 
         hgvfs
            ``vfs.vfs`` rooted at .hg/
 
         requirements
            ``set`` of bytestrings representing repository opening requirements.
 
         supportedrequirements
            ``set`` of bytestrings representing repository requirements that we
            know how to open. May be a supetset of ``requirements``.
 
         sharedpath
            ``bytes`` Defining path to storage base directory. Points to a
            ``.hg/`` directory somewhere.
 
         store
            ``store.basicstore`` (or derived) instance providing access to
            versioned storage.
 
         cachevfs
            ``vfs.vfs`` used for cache files.
 
         wcachevfs
            ``vfs.vfs`` used for cache files related to the working copy.
 
         features
            ``set`` of bytestrings defining features/capabilities of this
            instance.
 
         intents
            ``set`` of system strings indicating what this repo will be used
            for.
         """
         self.baseui = baseui
         self.ui = ui
         self.origroot = origroot
         # vfs rooted at working directory.
         self.wvfs = wdirvfs
         self.root = wdirvfs.base
         # vfs rooted at .hg/. Used to access most non-store paths.
         self.vfs = hgvfs
         self.path = hgvfs.base
         self.requirements = requirements
         self.supported = supportedrequirements
         self.sharedpath = sharedpath
         self.store = store
         self.cachevfs = cachevfs
         self.wcachevfs = wcachevfs
         self.features = features
 
         self.filtername = None
 
         if (self.ui.configbool('devel', 'all-warnings') or
             self.ui.configbool('devel', 'check-locks')):
             self.vfs.audit = self._getvfsward(self.vfs.audit)
         # A list of callback to shape the phase if no data were found.
         # Callback are in the form: func(repo, roots) --> processed root.
         # This list it to be filled by extension during repo setup
         self._phasedefaults = []
 
         color.setup(self.ui)
 
         self.spath = self.store.path
         self.svfs = self.store.vfs
         self.sjoin = self.store.join
         if (self.ui.configbool('devel', 'all-warnings') or
             self.ui.configbool('devel', 'check-locks')):
             if util.safehasattr(self.svfs, 'vfs'): # this is filtervfs
                 self.svfs.vfs.audit = self._getsvfsward(self.svfs.vfs.audit)
             else: # standard vfs
                 self.svfs.audit = self._getsvfsward(self.svfs.audit)
 
         self._dirstatevalidatewarned = False
 
         self._branchcaches = branchmap.BranchMapCache()
         self._revbranchcache = None
         self._filterpats = {}
         self._datafilters = {}
         self._transref = self._lockref = self._wlockref = None
 
         # A cache for various files under .hg/ that tracks file changes,
         # (used by the filecache decorator)
         #
         # Maps a property name to its util.filecacheentry
         self._filecache = {}
 
         # hold sets of revision to be filtered
         # should be cleared when something might have changed the filter value:
         # - new changesets,
         # - phase change,
         # - new obsolescence marker,
         # - working directory parent change,
         # - bookmark changes
         self.filteredrevcache = {}
 
         # post-dirstate-status hooks
         self._postdsstatus = []
 
         # generic mapping between names and nodes
         self.names = namespaces.namespaces()
 
         # Key to signature value.
         self._sparsesignaturecache = {}
         # Signature to cached matcher instance.
         self._sparsematchercache = {}
 
         self._extrafilterid = repoview.extrafilter(ui)
 
     def _getvfsward(self, origfunc):
         """build a ward for self.vfs"""
         rref = weakref.ref(self)
         def checkvfs(path, mode=None):
             ret = origfunc(path, mode=mode)
             repo = rref()
             if (repo is None
                 or not util.safehasattr(repo, '_wlockref')
                 or not util.safehasattr(repo, '_lockref')):
                 return
             if mode in (None, 'r', 'rb'):
                 return
             if path.startswith(repo.path):
                 # truncate name relative to the repository (.hg)
                 path = path[len(repo.path) + 1:]
             if path.startswith('cache/'):
                 msg = 'accessing cache with vfs instead of cachevfs: "%s"'
                 repo.ui.develwarn(msg % path, stacklevel=3, config="cache-vfs")
             if path.startswith('journal.') or path.startswith('undo.'):
                 # journal is covered by 'lock'
                 if repo._currentlock(repo._lockref) is None:
                     repo.ui.develwarn('write with no lock: "%s"' % path,
                                       stacklevel=3, config='check-locks')
             elif repo._currentlock(repo._wlockref) is None:
                 # rest of vfs files are covered by 'wlock'
                 #
                 # exclude special files
                 for prefix in self._wlockfreeprefix:
                     if path.startswith(prefix):
                         return
                 repo.ui.develwarn('write with no wlock: "%s"' % path,
                                   stacklevel=3, config='check-locks')
             return ret
         return checkvfs
 
     def _getsvfsward(self, origfunc):
         """build a ward for self.svfs"""
         rref = weakref.ref(self)
         def checksvfs(path, mode=None):
             ret = origfunc(path, mode=mode)
             repo = rref()
             if repo is None or not util.safehasattr(repo, '_lockref'):
                 return
             if mode in (None, 'r', 'rb'):
                 return
             if path.startswith(repo.sharedpath):
                 # truncate name relative to the repository (.hg)
                 path = path[len(repo.sharedpath) + 1:]
             if repo._currentlock(repo._lockref) is None:
                 repo.ui.develwarn('write with no lock: "%s"' % path,
                                   stacklevel=4)
             return ret
         return checksvfs
 
     def close(self):
         self._writecaches()
 
     def _writecaches(self):
         if self._revbranchcache:
             self._revbranchcache.write()
 
     def _restrictcapabilities(self, caps):
         if self.ui.configbool('experimental', 'bundle2-advertise'):
             caps = set(caps)
             capsblob = bundle2.encodecaps(bundle2.getrepocaps(self,
                                                               role='client'))
             caps.add('bundle2=' + urlreq.quote(capsblob))
         return caps
 
     def _writerequirements(self):
         scmutil.writerequires(self.vfs, self.requirements)
 
     # Don't cache auditor/nofsauditor, or you'll end up with reference cycle:
     # self -> auditor -> self._checknested -> self
 
     @property
     def auditor(self):
         # This is only used by context.workingctx.match in order to
         # detect files in subrepos.
         return pathutil.pathauditor(self.root, callback=self._checknested)
 
     @property
     def nofsauditor(self):
         # This is only used by context.basectx.match in order to detect
         # files in subrepos.
         return pathutil.pathauditor(self.root, callback=self._checknested,
                                     realfs=False, cached=True)
 
     def _checknested(self, path):
         """Determine if path is a legal nested repository."""
         if not path.startswith(self.root):
             return False
         subpath = path[len(self.root) + 1:]
         normsubpath = util.pconvert(subpath)
 
         # XXX: Checking against the current working copy is wrong in
         # the sense that it can reject things like
         #
         #   $ hg cat -r 10 sub/x.txt
         #
         # if sub/ is no longer a subrepository in the working copy
         # parent revision.
         #
         # However, it can of course also allow things that would have
         # been rejected before, such as the above cat command if sub/
         # is a subrepository now, but was a normal directory before.
         # The old path auditor would have rejected by mistake since it
         # panics when it sees sub/.hg/.
         #
         # All in all, checking against the working copy seems sensible
         # since we want to prevent access to nested repositories on
         # the filesystem *now*.
         ctx = self[None]
         parts = util.splitpath(subpath)
         while parts:
             prefix = '/'.join(parts)
             if prefix in ctx.substate:
                 if prefix == normsubpath:
                     return True
                 else:
                     sub = ctx.sub(prefix)
                     return sub.checknested(subpath[len(prefix) + 1:])
             else:
                 parts.pop()
         return False
 
     def peer(self):
         return localpeer(self) # not cached to avoid reference cycle
 
     def unfiltered(self):
         """Return unfiltered version of the repository
 
         Intended to be overwritten by filtered repo."""
         return self
 
     def filtered(self, name, visibilityexceptions=None):
         """Return a filtered version of a repository
 
         The `name` parameter is the identifier of the requested view. This
         will return a repoview object set "exactly" to the specified view.
 
         This function does not apply recursive filtering to a repository. For
         example calling `repo.filtered("served")` will return a repoview using
         the "served" view, regardless of the initial view used by `repo`.
 
         In other word, there is always only one level of `repoview` "filtering".
         """
         if self._extrafilterid is not None and '%' not in name:
             name = name + '%'  + self._extrafilterid
 
         cls = repoview.newtype(self.unfiltered().__class__)
         return cls(self, name, visibilityexceptions)
 
     @repofilecache('bookmarks', 'bookmarks.current')
     def _bookmarks(self):
         return bookmarks.bmstore(self)
 
     @property
     def _activebookmark(self):
         return self._bookmarks.active
 
     # _phasesets depend on changelog. what we need is to call
     # _phasecache.invalidate() if '00changelog.i' was changed, but it
     # can't be easily expressed in filecache mechanism.
     @storecache('phaseroots', '00changelog.i')
     def _phasecache(self):
         return phases.phasecache(self, self._phasedefaults)
 
     @storecache('obsstore')
     def obsstore(self):
         return obsolete.makestore(self.ui, self)
 
     @storecache('00changelog.i')
     def changelog(self):
         return changelog.changelog(self.svfs,
                                    trypending=txnutil.mayhavepending(self.root))
 
     @storecache('00manifest.i')
     def manifestlog(self):
         rootstore = manifest.manifestrevlog(self.svfs)
         return manifest.manifestlog(self.svfs, self, rootstore,
                                     self._storenarrowmatch)
 
     @repofilecache('dirstate')
     def dirstate(self):
         return self._makedirstate()
 
     def _makedirstate(self):
         """Extension point for wrapping the dirstate per-repo."""
         sparsematchfn = lambda: sparse.matcher(self)
 
         return dirstate.dirstate(self.vfs, self.ui, self.root,
                                  self._dirstatevalidate, sparsematchfn)
 
     def _dirstatevalidate(self, node):
         try:
             self.changelog.rev(node)
             return node
         except error.LookupError:
             if not self._dirstatevalidatewarned:
                 self._dirstatevalidatewarned = True
                 self.ui.warn(_("warning: ignoring unknown"
                                " working parent %s!\n") % short(node))
             return nullid
 
     @storecache(narrowspec.FILENAME)
     def narrowpats(self):
         """matcher patterns for this repository's narrowspec
 
         A tuple of (includes, excludes).
         """
         return narrowspec.load(self)
 
     @storecache(narrowspec.FILENAME)
     def _storenarrowmatch(self):
         if repository.NARROW_REQUIREMENT not in self.requirements:
             return matchmod.always()
         include, exclude = self.narrowpats
         return narrowspec.match(self.root, include=include, exclude=exclude)
 
     @storecache(narrowspec.FILENAME)
     def _narrowmatch(self):
         if repository.NARROW_REQUIREMENT not in self.requirements:
             return matchmod.always()
         narrowspec.checkworkingcopynarrowspec(self)
         include, exclude = self.narrowpats
         return narrowspec.match(self.root, include=include, exclude=exclude)
 
     def narrowmatch(self, match=None, includeexact=False):
         """matcher corresponding the the repo's narrowspec
 
         If `match` is given, then that will be intersected with the narrow
         matcher.
 
         If `includeexact` is True, then any exact matches from `match` will
         be included even if they're outside the narrowspec.
         """
         if match:
             if includeexact and not self._narrowmatch.always():
                 # do not exclude explicitly-specified paths so that they can
                 # be warned later on
                 em = matchmod.exact(match.files())
                 nm = matchmod.unionmatcher([self._narrowmatch, em])
                 return matchmod.intersectmatchers(match, nm)
             return matchmod.intersectmatchers(match, self._narrowmatch)
         return self._narrowmatch
 
     def setnarrowpats(self, newincludes, newexcludes):
         narrowspec.save(self, newincludes, newexcludes)
         self.invalidate(clearfilecache=True)
 
     def __getitem__(self, changeid):
         if changeid is None:
             return context.workingctx(self)
         if isinstance(changeid, context.basectx):
             return changeid
         if isinstance(changeid, slice):
             # wdirrev isn't contiguous so the slice shouldn't include it
             return [self[i]
                     for i in pycompat.xrange(*changeid.indices(len(self)))
                     if i not in self.changelog.filteredrevs]
         try:
             if isinstance(changeid, int):
                 node = self.changelog.node(changeid)
                 rev = changeid
             elif changeid == 'null':
                 node = nullid
                 rev = nullrev
             elif changeid == 'tip':
                 node = self.changelog.tip()
                 rev = self.changelog.rev(node)
             elif changeid == '.':
                 # this is a hack to delay/avoid loading obsmarkers
                 # when we know that '.' won't be hidden
                 node = self.dirstate.p1()
                 rev = self.unfiltered().changelog.rev(node)
             elif len(changeid) == 20:
                 try:
                     node = changeid
                     rev = self.changelog.rev(changeid)
                 except error.FilteredLookupError:
                     changeid = hex(changeid) # for the error message
                     raise
                 except LookupError:
                     # check if it might have come from damaged dirstate
                     #
                     # XXX we could avoid the unfiltered if we had a recognizable
                     # exception for filtered changeset access
                     if (self.local()
                         and changeid in self.unfiltered().dirstate.parents()):
                         msg = _("working directory has unknown parent '%s'!")
                         raise error.Abort(msg % short(changeid))
                     changeid = hex(changeid) # for the error message
                     raise
 
             elif len(changeid) == 40:
                 node = bin(changeid)
                 rev = self.changelog.rev(node)
             else:
                 raise error.ProgrammingError(
                         "unsupported changeid '%s' of type %s" %
                         (changeid, type(changeid)))
 
             return context.changectx(self, rev, node)
 
         except (error.FilteredIndexError, error.FilteredLookupError):
             raise error.FilteredRepoLookupError(_("filtered revision '%s'")
                                                 % pycompat.bytestr(changeid))
         except (IndexError, LookupError):
             raise error.RepoLookupError(
                 _("unknown revision '%s'") % pycompat.bytestr(changeid))
         except error.WdirUnsupported:
             return context.workingctx(self)
 
     def __contains__(self, changeid):
         """True if the given changeid exists
 
         error.AmbiguousPrefixLookupError is raised if an ambiguous node
         specified.
         """
         try:
             self[changeid]
             return True
         except error.RepoLookupError:
             return False
 
     def __nonzero__(self):
         return True
 
     __bool__ = __nonzero__
 
     def __len__(self):
         # no need to pay the cost of repoview.changelog
         unfi = self.unfiltered()
         return len(unfi.changelog)
 
     def __iter__(self):
         return iter(self.changelog)
 
     def revs(self, expr, *args):
         '''Find revisions matching a revset.
 
         The revset is specified as a string ``expr`` that may contain
         %-formatting to escape certain types. See ``revsetlang.formatspec``.
 
         Revset aliases from the configuration are not expanded. To expand
         user aliases, consider calling ``scmutil.revrange()`` or
         ``repo.anyrevs([expr], user=True)``.
 
         Returns a revset.abstractsmartset, which is a list-like interface
         that contains integer revisions.
         '''
         tree = revsetlang.spectree(expr, *args)
         return revset.makematcher(tree)(self)
 
     def set(self, expr, *args):
         '''Find revisions matching a revset and emit changectx instances.
 
         This is a convenience wrapper around ``revs()`` that iterates the
         result and is a generator of changectx instances.
 
         Revset aliases from the configuration are not expanded. To expand
         user aliases, consider calling ``scmutil.revrange()``.
         '''
         for r in self.revs(expr, *args):
             yield self[r]
 
     def anyrevs(self, specs, user=False, localalias=None):
         '''Find revisions matching one of the given revsets.
 
         Revset aliases from the configuration are not expanded by default. To
         expand user aliases, specify ``user=True``. To provide some local
         definitions overriding user aliases, set ``localalias`` to
         ``{name: definitionstring}``.
         '''
         if user:
             m = revset.matchany(self.ui, specs,
                                 lookup=revset.lookupfn(self),
                                 localalias=localalias)
         else:
             m = revset.matchany(None, specs, localalias=localalias)
         return m(self)
 
     def url(self):
         return 'file:' + self.root
 
     def hook(self, name, throw=False, **args):
         """Call a hook, passing this repo instance.
 
         This a convenience method to aid invoking hooks. Extensions likely
         won't call this unless they have registered a custom hook or are
         replacing code that is expected to call a hook.
         """
         return hook.hook(self.ui, self, name, throw, **args)
 
     @filteredpropertycache
     def _tagscache(self):
         '''Returns a tagscache object that contains various tags related
         caches.'''
 
         # This simplifies its cache management by having one decorated
         # function (this one) and the rest simply fetch things from it.
         class tagscache(object):
             def __init__(self):
                 # These two define the set of tags for this repository. tags
                 # maps tag name to node; tagtypes maps tag name to 'global' or
                 # 'local'. (Global tags are defined by .hgtags across all
                 # heads, and local tags are defined in .hg/localtags.)
                 # They constitute the in-memory cache of tags.
                 self.tags = self.tagtypes = None
 
                 self.nodetagscache = self.tagslist = None
 
         cache = tagscache()
         cache.tags, cache.tagtypes = self._findtags()
 
         return cache
 
     def tags(self):
         '''return a mapping of tag to node'''
         t = {}
         if self.changelog.filteredrevs:
             tags, tt = self._findtags()
         else:
             tags = self._tagscache.tags
         rev = self.changelog.rev
         for k, v in tags.iteritems():
             try:
                 # ignore tags to unknown nodes
                 rev(v)
                 t[k] = v
             except (error.LookupError, ValueError):
                 pass
         return t
 
     def _findtags(self):
         '''Do the hard work of finding tags.  Return a pair of dicts
         (tags, tagtypes) where tags maps tag name to node, and tagtypes
         maps tag name to a string like \'global\' or \'local\'.
         Subclasses or extensions are free to add their own tags, but
         should be aware that the returned dicts will be retained for the
         duration of the localrepo object.'''
 
         # XXX what tagtype should subclasses/extensions use?  Currently
         # mq and bookmarks add tags, but do not set the tagtype at all.
         # Should each extension invent its own tag type?  Should there
         # be one tagtype for all such "virtual" tags?  Or is the status
         # quo fine?
 
 
         # map tag name to (node, hist)
         alltags = tagsmod.findglobaltags(self.ui, self)
         # map tag name to tag type
         tagtypes = dict((tag, 'global') for tag in alltags)
 
         tagsmod.readlocaltags(self.ui, self, alltags, tagtypes)
 
         # Build the return dicts.  Have to re-encode tag names because
         # the tags module always uses UTF-8 (in order not to lose info
         # writing to the cache), but the rest of Mercurial wants them in
         # local encoding.
         tags = {}
         for (name, (node, hist)) in alltags.iteritems():
             if node != nullid:
                 tags[encoding.tolocal(name)] = node
         tags['tip'] = self.changelog.tip()
         tagtypes = dict([(encoding.tolocal(name), value)
                          for (name, value) in tagtypes.iteritems()])
         return (tags, tagtypes)
 
     def tagtype(self, tagname):
         '''
         return the type of the given tag. result can be:
 
         'local'  : a local tag
         'global' : a global tag
         None     : tag does not exist
         '''
 
         return self._tagscache.tagtypes.get(tagname)
 
     def tagslist(self):
         '''return a list of tags ordered by revision'''
         if not self._tagscache.tagslist:
             l = []
             for t, n in self.tags().iteritems():
                 l.append((self.changelog.rev(n), t, n))
             self._tagscache.tagslist = [(t, n) for r, t, n in sorted(l)]
 
         return self._tagscache.tagslist
 
     def nodetags(self, node):
         '''return the tags associated with a node'''
         if not self._tagscache.nodetagscache:
             nodetagscache = {}
             for t, n in self._tagscache.tags.iteritems():
                 nodetagscache.setdefault(n, []).append(t)
             for tags in nodetagscache.itervalues():
                 tags.sort()
             self._tagscache.nodetagscache = nodetagscache
         return self._tagscache.nodetagscache.get(node, [])
 
     def nodebookmarks(self, node):
         """return the list of bookmarks pointing to the specified node"""
         return self._bookmarks.names(node)
 
     def branchmap(self):
         '''returns a dictionary {branch: [branchheads]} with branchheads
         ordered by increasing revision number'''
         return self._branchcaches[self]
 
     @unfilteredmethod
     def revbranchcache(self):
         if not self._revbranchcache:
             self._revbranchcache = branchmap.revbranchcache(self.unfiltered())
         return self._revbranchcache
 
     def branchtip(self, branch, ignoremissing=False):
         '''return the tip node for a given branch
 
         If ignoremissing is True, then this method will not raise an error.
         This is helpful for callers that only expect None for a missing branch
         (e.g. namespace).
 
         '''
         try:
             return self.branchmap().branchtip(branch)
         except KeyError:
             if not ignoremissing:
                 raise error.RepoLookupError(_("unknown branch '%s'") % branch)
             else:
                 pass
 
     def lookup(self, key):
         node = scmutil.revsymbol(self, key).node()
         if node is None:
             raise error.RepoLookupError(_("unknown revision '%s'") % key)
         return node
 
     def lookupbranch(self, key):
         if self.branchmap().hasbranch(key):
             return key
 
         return scmutil.revsymbol(self, key).branch()
 
     def known(self, nodes):
         cl = self.changelog
         nm = cl.nodemap
         filtered = cl.filteredrevs
         result = []
         for n in nodes:
             r = nm.get(n)
             resp = not (r is None or r in filtered)
             result.append(resp)
         return result
 
     def local(self):
         return self
 
     def publishing(self):
         # it's safe (and desirable) to trust the publish flag unconditionally
         # so that we don't finalize changes shared between users via ssh or nfs
         return self.ui.configbool('phases', 'publish', untrusted=True)
 
     def cancopy(self):
         # so statichttprepo's override of local() works
         if not self.local():
             return False
         if not self.publishing():
             return True
         # if publishing we can't copy if there is filtered content
         return not self.filtered('visible').changelog.filteredrevs
 
     def shared(self):
         '''the type of shared repository (None if not shared)'''
         if self.sharedpath != self.path:
             return 'store'
         return None
 
     def wjoin(self, f, *insidef):
         return self.vfs.reljoin(self.root, f, *insidef)
 
     def setparents(self, p1, p2=nullid):
         with self.dirstate.parentchange():
             copies = self.dirstate.setparents(p1, p2)
             pctx = self[p1]
             if copies:
                 # Adjust copy records, the dirstate cannot do it, it
                 # requires access to parents manifests. Preserve them
                 # only for entries added to first parent.
                 for f in copies:
                     if f not in pctx and copies[f] in pctx:
                         self.dirstate.copy(copies[f], f)
             if p2 == nullid:
                 for f, s in sorted(self.dirstate.copies().items()):
                     if f not in pctx and s not in pctx:
                         self.dirstate.copy(None, f)
 
     def filectx(self, path, changeid=None, fileid=None, changectx=None):
         """changeid must be a changeset revision, if specified.
            fileid can be a file revision or node."""
         return context.filectx(self, path, changeid, fileid,
                                changectx=changectx)
 
     def getcwd(self):
         return self.dirstate.getcwd()
 
     def pathto(self, f, cwd=None):
         return self.dirstate.pathto(f, cwd)
 
     def _loadfilter(self, filter):
         if filter not in self._filterpats:
             l = []
             for pat, cmd in self.ui.configitems(filter):
                 if cmd == '!':
                     continue
                 mf = matchmod.match(self.root, '', [pat])
                 fn = None
                 params = cmd
                 for name, filterfn in self._datafilters.iteritems():
                     if cmd.startswith(name):
                         fn = filterfn
                         params = cmd[len(name):].lstrip()
                         break
                 if not fn:
                     fn = lambda s, c, **kwargs: procutil.filter(s, c)
                 # Wrap old filters not supporting keyword arguments
                 if not pycompat.getargspec(fn)[2]:
                     oldfn = fn
                     fn = lambda s, c, **kwargs: oldfn(s, c)
                 l.append((mf, fn, params))
             self._filterpats[filter] = l
         return self._filterpats[filter]
 
     def _filter(self, filterpats, filename, data):
         for mf, fn, cmd in filterpats:
             if mf(filename):
                 self.ui.debug("filtering %s through %s\n" % (filename, cmd))
                 data = fn(data, cmd, ui=self.ui, repo=self, filename=filename)
                 break
 
         return data
 
     @unfilteredpropertycache
     def _encodefilterpats(self):
         return self._loadfilter('encode')
 
     @unfilteredpropertycache
     def _decodefilterpats(self):
         return self._loadfilter('decode')
 
     def adddatafilter(self, name, filter):
         self._datafilters[name] = filter
 
     def wread(self, filename):
         if self.wvfs.islink(filename):
             data = self.wvfs.readlink(filename)
         else:
             data = self.wvfs.read(filename)
         return self._filter(self._encodefilterpats, filename, data)
 
     def wwrite(self, filename, data, flags, backgroundclose=False, **kwargs):
         """write ``data`` into ``filename`` in the working directory
 
         This returns length of written (maybe decoded) data.
         """
         data = self._filter(self._decodefilterpats, filename, data)
         if 'l' in flags:
             self.wvfs.symlink(data, filename)
         else:
             self.wvfs.write(filename, data, backgroundclose=backgroundclose,
                             **kwargs)
             if 'x' in flags:
                 self.wvfs.setflags(filename, False, True)
             else:
                 self.wvfs.setflags(filename, False, False)
         return len(data)
 
     def wwritedata(self, filename, data):
         return self._filter(self._decodefilterpats, filename, data)
 
     def currenttransaction(self):
         """return the current transaction or None if non exists"""
         if self._transref:
             tr = self._transref()
         else:
             tr = None
 
         if tr and tr.running():
             return tr
         return None
 
     def transaction(self, desc, report=None):
         if (self.ui.configbool('devel', 'all-warnings')
                 or self.ui.configbool('devel', 'check-locks')):
             if self._currentlock(self._lockref) is None:
                 raise error.ProgrammingError('transaction requires locking')
         tr = self.currenttransaction()
         if tr is not None:
             return tr.nest(name=desc)
 
         # abort here if the journal already exists
         if self.svfs.exists("journal"):
             raise error.RepoError(
                 _("abandoned transaction found"),
                 hint=_("run 'hg recover' to clean up transaction"))
 
         idbase = "%.40f#%f" % (random.random(), time.time())
         ha = hex(hashlib.sha1(idbase).digest())
         txnid = 'TXN:' + ha
         self.hook('pretxnopen', throw=True, txnname=desc, txnid=txnid)
 
         self._writejournal(desc)
         renames = [(vfs, x, undoname(x)) for vfs, x in self._journalfiles()]
         if report:
             rp = report
         else:
             rp = self.ui.warn
         vfsmap = {'plain': self.vfs, 'store': self.svfs} # root of .hg/
         # we must avoid cyclic reference between repo and transaction.
         reporef = weakref.ref(self)
         # Code to track tag movement
         #
         # Since tags are all handled as file content, it is actually quite hard
         # to track these movement from a code perspective. So we fallback to a
         # tracking at the repository level. One could envision to track changes
         # to the '.hgtags' file through changegroup apply but that fails to
         # cope with case where transaction expose new heads without changegroup
         # being involved (eg: phase movement).
         #
         # For now, We gate the feature behind a flag since this likely comes
         # with performance impacts. The current code run more often than needed
         # and do not use caches as much as it could.  The current focus is on
         # the behavior of the feature so we disable it by default. The flag
         # will be removed when we are happy with the performance impact.
         #
         # Once this feature is no longer experimental move the following
         # documentation to the appropriate help section:
         #
         # The ``HG_TAG_MOVED`` variable will be set if the transaction touched
         # tags (new or changed or deleted tags). In addition the details of
         # these changes are made available in a file at:
         #     ``REPOROOT/.hg/changes/tags.changes``.
         # Make sure you check for HG_TAG_MOVED before reading that file as it
         # might exist from a previous transaction even if no tag were touched
         # in this one. Changes are recorded in a line base format::
         #
         #     <action> <hex-node> <tag-name>\n
         #
         # Actions are defined as follow:
         #   "-R": tag is removed,
         #   "+A": tag is added,
         #   "-M": tag is moved (old value),
         #   "+M": tag is moved (new value),
         tracktags = lambda x: None
         # experimental config: experimental.hook-track-tags
         shouldtracktags = self.ui.configbool('experimental', 'hook-track-tags')
         if desc != 'strip' and shouldtracktags:
             oldheads = self.changelog.headrevs()
             def tracktags(tr2):
                 repo = reporef()
                 oldfnodes = tagsmod.fnoderevs(repo.ui, repo, oldheads)
                 newheads = repo.changelog.headrevs()
                 newfnodes = tagsmod.fnoderevs(repo.ui, repo, newheads)
                 # notes: we compare lists here.
                 # As we do it only once buiding set would not be cheaper
                 changes = tagsmod.difftags(repo.ui, repo, oldfnodes, newfnodes)
                 if changes:
                     tr2.hookargs['tag_moved'] = '1'
                     with repo.vfs('changes/tags.changes', 'w',
                                   atomictemp=True) as changesfile:
                         # note: we do not register the file to the transaction
                         # because we needs it to still exist on the transaction
                         # is close (for txnclose hooks)
                         tagsmod.writediff(changesfile, changes)
         def validate(tr2):
             """will run pre-closing hooks"""
             # XXX the transaction API is a bit lacking here so we take a hacky
             # path for now
             #
             # We cannot add this as a "pending" hooks since the 'tr.hookargs'
             # dict is copied before these run. In addition we needs the data
             # available to in memory hooks too.
             #
             # Moreover, we also need to make sure this runs before txnclose
             # hooks and there is no "pending" mechanism that would execute
             # logic only if hooks are about to run.
             #
             # Fixing this limitation of the transaction is also needed to track
             # other families of changes (bookmarks, phases, obsolescence).
             #
             # This will have to be fixed before we remove the experimental
             # gating.
             tracktags(tr2)
             repo = reporef()
             if repo.ui.configbool('experimental', 'single-head-per-branch'):
                 scmutil.enforcesinglehead(repo, tr2, desc)
             if hook.hashook(repo.ui, 'pretxnclose-bookmark'):
                 for name, (old, new) in sorted(tr.changes['bookmarks'].items()):
                     args = tr.hookargs.copy()
                     args.update(bookmarks.preparehookargs(name, old, new))
                     repo.hook('pretxnclose-bookmark', throw=True,
                               **pycompat.strkwargs(args))
             if hook.hashook(repo.ui, 'pretxnclose-phase'):
                 cl = repo.unfiltered().changelog
                 for rev, (old, new) in tr.changes['phases'].items():
                     args = tr.hookargs.copy()
                     node = hex(cl.node(rev))
                     args.update(phases.preparehookargs(node, old, new))
                     repo.hook('pretxnclose-phase', throw=True,
                               **pycompat.strkwargs(args))
 
             repo.hook('pretxnclose', throw=True,
                       **pycompat.strkwargs(tr.hookargs))
         def releasefn(tr, success):
             repo = reporef()
             if success:
                 # this should be explicitly invoked here, because
                 # in-memory changes aren't written out at closing
                 # transaction, if tr.addfilegenerator (via
                 # dirstate.write or so) isn't invoked while
                 # transaction running
                 repo.dirstate.write(None)
             else:
                 # discard all changes (including ones already written
                 # out) in this transaction
                 narrowspec.restorebackup(self, 'journal.narrowspec')
                 narrowspec.restorewcbackup(self, 'journal.narrowspec.dirstate')
                 repo.dirstate.restorebackup(None, 'journal.dirstate')
 
                 repo.invalidate(clearfilecache=True)
 
         tr = transaction.transaction(rp, self.svfs, vfsmap,
                                      "journal",
                                      "undo",
                                      aftertrans(renames),
                                      self.store.createmode,
                                      validator=validate,
                                      releasefn=releasefn,
                                      checkambigfiles=_cachedfiles,
                                      name=desc)
         tr.changes['origrepolen'] = len(self)
         tr.changes['obsmarkers'] = set()
         tr.changes['phases'] = {}
         tr.changes['bookmarks'] = {}
 
         tr.hookargs['txnid'] = txnid
         tr.hookargs['txnname'] = desc
         # note: writing the fncache only during finalize mean that the file is
         # outdated when running hooks. As fncache is used for streaming clone,
         # this is not expected to break anything that happen during the hooks.
         tr.addfinalize('flush-fncache', self.store.write)
         def txnclosehook(tr2):
             """To be run if transaction is successful, will schedule a hook run
             """
             # Don't reference tr2 in hook() so we don't hold a reference.
             # This reduces memory consumption when there are multiple
             # transactions per lock. This can likely go away if issue5045
             # fixes the function accumulation.
             hookargs = tr2.hookargs
 
             def hookfunc():
                 repo = reporef()
                 if hook.hashook(repo.ui, 'txnclose-bookmark'):
                     bmchanges = sorted(tr.changes['bookmarks'].items())
                     for name, (old, new) in bmchanges:
                         args = tr.hookargs.copy()
                         args.update(bookmarks.preparehookargs(name, old, new))
                         repo.hook('txnclose-bookmark', throw=False,
                                   **pycompat.strkwargs(args))
 
                 if hook.hashook(repo.ui, 'txnclose-phase'):
                     cl = repo.unfiltered().changelog
                     phasemv = sorted(tr.changes['phases'].items())
                     for rev, (old, new) in phasemv:
                         args = tr.hookargs.copy()
                         node = hex(cl.node(rev))
                         args.update(phases.preparehookargs(node, old, new))
                         repo.hook('txnclose-phase', throw=False,
                                   **pycompat.strkwargs(args))
 
                 repo.hook('txnclose', throw=False,
                           **pycompat.strkwargs(hookargs))
             reporef()._afterlock(hookfunc)
         tr.addfinalize('txnclose-hook', txnclosehook)
         # Include a leading "-" to make it happen before the transaction summary
         # reports registered via scmutil.registersummarycallback() whose names
         # are 00-txnreport etc. That way, the caches will be warm when the
         # callbacks run.
         tr.addpostclose('-warm-cache', self._buildcacheupdater(tr))
         def txnaborthook(tr2):
             """To be run if transaction is aborted
             """
             reporef().hook('txnabort', throw=False,
                            **pycompat.strkwargs(tr2.hookargs))
         tr.addabort('txnabort-hook', txnaborthook)
         # avoid eager cache invalidation. in-memory data should be identical
         # to stored data if transaction has no error.
         tr.addpostclose('refresh-filecachestats', self._refreshfilecachestats)
         self._transref = weakref.ref(tr)
         scmutil.registersummarycallback(self, tr, desc)
         return tr
 
     def _journalfiles(self):
         return ((self.svfs, 'journal'),
                 (self.svfs, 'journal.narrowspec'),
                 (self.vfs, 'journal.narrowspec.dirstate'),
                 (self.vfs, 'journal.dirstate'),
                 (self.vfs, 'journal.branch'),
                 (self.vfs, 'journal.desc'),
                 (self.vfs, 'journal.bookmarks'),
                 (self.svfs, 'journal.phaseroots'))
 
     def undofiles(self):
         return [(vfs, undoname(x)) for vfs, x in self._journalfiles()]
 
     @unfilteredmethod
     def _writejournal(self, desc):
         self.dirstate.savebackup(None, 'journal.dirstate')
         narrowspec.savewcbackup(self, 'journal.narrowspec.dirstate')
         narrowspec.savebackup(self, 'journal.narrowspec')
         self.vfs.write("journal.branch",
                           encoding.fromlocal(self.dirstate.branch()))
         self.vfs.write("journal.desc",
                           "%d\n%s\n" % (len(self), desc))
         self.vfs.write("journal.bookmarks",
                           self.vfs.tryread("bookmarks"))
         self.svfs.write("journal.phaseroots",
                            self.svfs.tryread("phaseroots"))
 
     def recover(self):
         with self.lock():
             if self.svfs.exists("journal"):
                 self.ui.status(_("rolling back interrupted transaction\n"))
                 vfsmap = {'': self.svfs,
                           'plain': self.vfs,}
                 transaction.rollback(self.svfs, vfsmap, "journal",
                                      self.ui.warn,
                                      checkambigfiles=_cachedfiles)
                 self.invalidate()
                 return True
             else:
                 self.ui.warn(_("no interrupted transaction available\n"))
                 return False
 
     def rollback(self, dryrun=False, force=False):
         wlock = lock = dsguard = None
         try:
             wlock = self.wlock()
             lock = self.lock()
             if self.svfs.exists("undo"):
                 dsguard = dirstateguard.dirstateguard(self, 'rollback')
 
                 return self._rollback(dryrun, force, dsguard)
             else:
                 self.ui.warn(_("no rollback information available\n"))
                 return 1
         finally:
             release(dsguard, lock, wlock)
 
     @unfilteredmethod # Until we get smarter cache management
     def _rollback(self, dryrun, force, dsguard):
         ui = self.ui
         try:
             args = self.vfs.read('undo.desc').splitlines()
             (oldlen, desc, detail) = (int(args[0]), args[1], None)
             if len(args) >= 3:
                 detail = args[2]
             oldtip = oldlen - 1
 
             if detail and ui.verbose:
                 msg = (_('repository tip rolled back to revision %d'
                          ' (undo %s: %s)\n')
                        % (oldtip, desc, detail))
             else:
                 msg = (_('repository tip rolled back to revision %d'
                          ' (undo %s)\n')
                        % (oldtip, desc))
         except IOError:
             msg = _('rolling back unknown transaction\n')
             desc = None
 
         if not force and self['.'] != self['tip'] and desc == 'commit':
             raise error.Abort(
                 _('rollback of last commit while not checked out '
                   'may lose data'), hint=_('use -f to force'))
 
         ui.status(msg)
         if dryrun:
             return 0
 
         parents = self.dirstate.parents()
         self.destroying()
         vfsmap = {'plain': self.vfs, '': self.svfs}
         transaction.rollback(self.svfs, vfsmap, 'undo', ui.warn,
                              checkambigfiles=_cachedfiles)
         if self.vfs.exists('undo.bookmarks'):
             self.vfs.rename('undo.bookmarks', 'bookmarks', checkambig=True)
         if self.svfs.exists('undo.phaseroots'):
             self.svfs.rename('undo.phaseroots', 'phaseroots', checkambig=True)
         self.invalidate()
 
         parentgone = any(p not in self.changelog.nodemap for p in parents)
         if parentgone:
             # prevent dirstateguard from overwriting already restored one
             dsguard.close()
 
             narrowspec.restorebackup(self, 'undo.narrowspec')
             narrowspec.restorewcbackup(self, 'undo.narrowspec.dirstate')
             self.dirstate.restorebackup(None, 'undo.dirstate')
             try:
                 branch = self.vfs.read('undo.branch')
                 self.dirstate.setbranch(encoding.tolocal(branch))
             except IOError:
                 ui.warn(_('named branch could not be reset: '
                           'current branch is still \'%s\'\n')
                         % self.dirstate.branch())
 
             parents = tuple([p.rev() for p in self[None].parents()])
             if len(parents) > 1:
                 ui.status(_('working directory now based on '
                             'revisions %d and %d\n') % parents)
             else:
                 ui.status(_('working directory now based on '
                             'revision %d\n') % parents)
             mergemod.mergestate.clean(self, self['.'].node())
 
         # TODO: if we know which new heads may result from this rollback, pass
         # them to destroy(), which will prevent the branchhead cache from being
         # invalidated.
         self.destroyed()
         return 0
 
     def _buildcacheupdater(self, newtransaction):
         """called during transaction to build the callback updating cache
 
         Lives on the repository to help extension who might want to augment
         this logic. For this purpose, the created transaction is passed to the
         method.
         """
         # we must avoid cyclic reference between repo and transaction.
         reporef = weakref.ref(self)
         def updater(tr):
             repo = reporef()
             repo.updatecaches(tr)
         return updater
 
     @unfilteredmethod
     def updatecaches(self, tr=None, full=False):
         """warm appropriate caches
 
         If this function is called after a transaction closed. The transaction
         will be available in the 'tr' argument. This can be used to selectively
         update caches relevant to the changes in that transaction.
 
         If 'full' is set, make sure all caches the function knows about have
         up-to-date data. Even the ones usually loaded more lazily.
         """
         if tr is not None and tr.hookargs.get('source') == 'strip':
             # During strip, many caches are invalid but
             # later call to `destroyed` will refresh them.
             return
 
         if tr is None or tr.changes['origrepolen'] < len(self):
             # accessing the 'ser ved' branchmap should refresh all the others,
             self.ui.debug('updating the branch cache\n')
             self.filtered('served').branchmap()
             self.filtered('served.hidden').branchmap()
 
         if full:
             unfi = self.unfiltered()
             rbc = unfi.revbranchcache()
             for r in unfi.changelog:
                 rbc.branchinfo(r)
             rbc.write()
 
             # ensure the working copy parents are in the manifestfulltextcache
             for ctx in self['.'].parents():
                 ctx.manifest()  # accessing the manifest is enough
 
             # accessing fnode cache warms the cache
             tagsmod.fnoderevs(self.ui, unfi, unfi.changelog.revs())
             # accessing tags warm the cache
             self.tags()
             self.filtered('served').tags()
 
     def invalidatecaches(self):
 
         if r'_tagscache' in vars(self):
             # can't use delattr on proxy
             del self.__dict__[r'_tagscache']
 
         self._branchcaches.clear()
         self.invalidatevolatilesets()
         self._sparsesignaturecache.clear()
 
     def invalidatevolatilesets(self):
         self.filteredrevcache.clear()
         obsolete.clearobscaches(self)
 
     def invalidatedirstate(self):
         '''Invalidates the dirstate, causing the next call to dirstate
         to check if it was modified since the last time it was read,
         rereading it if it has.
 
         This is different to dirstate.invalidate() that it doesn't always
         rereads the dirstate. Use dirstate.invalidate() if you want to
         explicitly read the dirstate again (i.e. restoring it to a previous
         known good state).'''
         if hasunfilteredcache(self, r'dirstate'):
             for k in self.dirstate._filecache:
                 try:
                     delattr(self.dirstate, k)
                 except AttributeError:
                     pass
             delattr(self.unfiltered(), r'dirstate')
 
     def invalidate(self, clearfilecache=False):
         '''Invalidates both store and non-store parts other than dirstate
 
         If a transaction is running, invalidation of store is omitted,
         because discarding in-memory changes might cause inconsistency
         (e.g. incomplete fncache causes unintentional failure, but
         redundant one doesn't).
         '''
         unfiltered = self.unfiltered() # all file caches are stored unfiltered
         for k in list(self._filecache.keys()):
             # dirstate is invalidated separately in invalidatedirstate()
             if k == 'dirstate':
                 continue
             if (k == 'changelog' and
                 self.currenttransaction() and
                 self.changelog._delayed):
                 # The changelog object may store unwritten revisions. We don't
                 # want to lose them.
                 # TODO: Solve the problem instead of working around it.
                 continue
 
             if clearfilecache:
                 del self._filecache[k]
             try:
                 delattr(unfiltered, k)
             except AttributeError:
                 pass
         self.invalidatecaches()
         if not self.currenttransaction():
             # TODO: Changing contents of store outside transaction
             # causes inconsistency. We should make in-memory store
             # changes detectable, and abort if changed.
             self.store.invalidatecaches()
 
     def invalidateall(self):
         '''Fully invalidates both store and non-store parts, causing the
         subsequent operation to reread any outside changes.'''
         # extension should hook this to invalidate its caches
         self.invalidate()
         self.invalidatedirstate()
 
     @unfilteredmethod
     def _refreshfilecachestats(self, tr):
         """Reload stats of cached files so that they are flagged as valid"""
         for k, ce in self._filecache.items():
             k = pycompat.sysstr(k)
             if k == r'dirstate' or k not in self.__dict__:
                 continue
             ce.refresh()
 
     def _lock(self, vfs, lockname, wait, releasefn, acquirefn, desc,
               inheritchecker=None, parentenvvar=None):
         parentlock = None
         # the contents of parentenvvar are used by the underlying lock to
         # determine whether it can be inherited
         if parentenvvar is not None:
             parentlock = encoding.environ.get(parentenvvar)
 
         timeout = 0
         warntimeout = 0
         if wait:
             timeout = self.ui.configint("ui", "timeout")
             warntimeout = self.ui.configint("ui", "timeout.warn")
         # internal config: ui.signal-safe-lock
         signalsafe = self.ui.configbool('ui', 'signal-safe-lock')
 
         l = lockmod.trylock(self.ui, vfs, lockname, timeout, warntimeout,
                             releasefn=releasefn,
                             acquirefn=acquirefn, desc=desc,
                             inheritchecker=inheritchecker,
                             parentlock=parentlock,
                             signalsafe=signalsafe)
         return l
 
     def _afterlock(self, callback):
         """add a callback to be run when the repository is fully unlocked
 
         The callback will be executed when the outermost lock is released
         (with wlock being higher level than 'lock')."""
         for ref in (self._wlockref, self._lockref):
             l = ref and ref()
             if l and l.held:
                 l.postrelease.append(callback)
                 break
         else: # no lock have been found.
             callback()
 
     def lock(self, wait=True):
         '''Lock the repository store (.hg/store) and return a weak reference
         to the lock. Use this before modifying the store (e.g. committing or
         stripping). If you are opening a transaction, get a lock as well.)
 
         If both 'lock' and 'wlock' must be acquired, ensure you always acquires
         'wlock' first to avoid a dead-lock hazard.'''
         l = self._currentlock(self._lockref)
         if l is not None:
             l.lock()
             return l
 
         l = self._lock(vfs=self.svfs,
                        lockname="lock",
                        wait=wait,
                        releasefn=None,
                        acquirefn=self.invalidate,
                        desc=_('repository %s') % self.origroot)
         self._lockref = weakref.ref(l)
         return l
 
     def _wlockchecktransaction(self):
         if self.currenttransaction() is not None:
             raise error.LockInheritanceContractViolation(
                 'wlock cannot be inherited in the middle of a transaction')
 
     def wlock(self, wait=True):
         '''Lock the non-store parts of the repository (everything under
         .hg except .hg/store) and return a weak reference to the lock.
 
         Use this before modifying files in .hg.
 
         If both 'lock' and 'wlock' must be acquired, ensure you always acquires
         'wlock' first to avoid a dead-lock hazard.'''
         l = self._wlockref and self._wlockref()
         if l is not None and l.held:
             l.lock()
             return l
 
         # We do not need to check for non-waiting lock acquisition.  Such
         # acquisition would not cause dead-lock as they would just fail.
         if wait and (self.ui.configbool('devel', 'all-warnings')
                      or self.ui.configbool('devel', 'check-locks')):
             if self._currentlock(self._lockref) is not None:
                 self.ui.develwarn('"wlock" acquired after "lock"')
 
         def unlock():
             if self.dirstate.pendingparentchange():
                 self.dirstate.invalidate()
             else:
                 self.dirstate.write(None)
 
             self._filecache['dirstate'].refresh()
 
         l = self._lock(self.vfs, "wlock", wait, unlock,
                        self.invalidatedirstate, _('working directory of %s') %
                        self.origroot,
                        inheritchecker=self._wlockchecktransaction,
                        parentenvvar='HG_WLOCK_LOCKER')
         self._wlockref = weakref.ref(l)
         return l
 
     def _currentlock(self, lockref):
         """Returns the lock if it's held, or None if it's not."""
         if lockref is None:
             return None
         l = lockref()
         if l is None or not l.held:
             return None
         return l
 
     def currentwlock(self):
         """Returns the wlock if it's held, or None if it's not."""
         return self._currentlock(self._wlockref)
 
     def _filecommit(self, fctx, manifest1, manifest2, linkrev, tr, changelist,
                     includecopymeta):
         """
         commit an individual file as part of a larger transaction
         """
 
         fname = fctx.path()
         fparent1 = manifest1.get(fname, nullid)
         fparent2 = manifest2.get(fname, nullid)
         if isinstance(fctx, context.filectx):
             node = fctx.filenode()
             if node in [fparent1, fparent2]:
                 self.ui.debug('reusing %s filelog entry\n' % fname)
                 if manifest1.flags(fname) != fctx.flags():
                     changelist.append(fname)
                 return node
 
         flog = self.file(fname)
         meta = {}
         cfname = fctx.copysource()
         if cfname and cfname != fname:
             # Mark the new revision of this file as a copy of another
             # file.  This copy data will effectively act as a parent
             # of this new revision.  If this is a merge, the first
             # parent will be the nullid (meaning "look up the copy data")
             # and the second one will be the other parent.  For example:
             #
             # 0 --- 1 --- 3   rev1 changes file foo
             #   \       /     rev2 renames foo to bar and changes it
             #    \- 2 -/      rev3 should have bar with all changes and
             #                      should record that bar descends from
             #                      bar in rev2 and foo in rev1
             #
             # this allows this merge to succeed:
             #
             # 0 --- 1 --- 3   rev4 reverts the content change from rev2
             #   \       /     merging rev3 and rev4 should use bar@rev2
             #    \- 2 --- 4        as the merge base
             #
 
             cnode = manifest1.get(cfname)
             newfparent = fparent2
 
             if manifest2: # branch merge
                 if fparent2 == nullid or cnode is None: # copied on remote side
                     if cfname in manifest2:
                         cnode = manifest2[cfname]
                         newfparent = fparent1
 
             # Here, we used to search backwards through history to try to find
             # where the file copy came from if the source of a copy was not in
             # the parent directory. However, this doesn't actually make sense to
             # do (what does a copy from something not in your working copy even
             # mean?) and it causes bugs (eg, issue4476). Instead, we will warn
             # the user that copy information was dropped, so if they didn't
             # expect this outcome it can be fixed, but this is the correct
             # behavior in this circumstance.
 
             if cnode:
                 self.ui.debug(" %s: copy %s:%s\n" % (fname, cfname, hex(cnode)))
                 if includecopymeta:
                     meta["copy"] = cfname
                     meta["copyrev"] = hex(cnode)
                 fparent1, fparent2 = nullid, newfparent
             else:
                 self.ui.warn(_("warning: can't find ancestor for '%s' "
                                "copied from '%s'!\n") % (fname, cfname))
 
         elif fparent1 == nullid:
             fparent1, fparent2 = fparent2, nullid
         elif fparent2 != nullid:
             # is one parent an ancestor of the other?
             fparentancestors = flog.commonancestorsheads(fparent1, fparent2)
             if fparent1 in fparentancestors:
                 fparent1, fparent2 = fparent2, nullid
             elif fparent2 in fparentancestors:
                 fparent2 = nullid
 
         # is the file changed?
         text = fctx.data()
         if fparent2 != nullid or flog.cmp(fparent1, text) or meta:
             changelist.append(fname)
             return flog.add(text, meta, tr, linkrev, fparent1, fparent2)
         # are just the flags changed during merge?
         elif fname in manifest1 and manifest1.flags(fname) != fctx.flags():
             changelist.append(fname)
 
         return fparent1
 
     def checkcommitpatterns(self, wctx, vdirs, match, status, fail):
         """check for commit arguments that aren't committable"""
         if match.isexact() or match.prefix():
             matched = set(status.modified + status.added + status.removed)
 
             for f in match.files():
                 f = self.dirstate.normalize(f)
                 if f == '.' or f in matched or f in wctx.substate:
                     continue
                 if f in status.deleted:
                     fail(f, _('file not found!'))
                 if f in vdirs: # visited directory
                     d = f + '/'
                     for mf in matched:
                         if mf.startswith(d):
                             break
                     else:
                         fail(f, _("no match under directory!"))
                 elif f not in self.dirstate:
                     fail(f, _("file not tracked!"))
 
     @unfilteredmethod
     def commit(self, text="", user=None, date=None, match=None, force=False,
                editor=False, extra=None):
         """Add a new revision to current repository.
 
         Revision information is gathered from the working directory,
         match can be used to filter the committed files. If editor is
         supplied, it is called to get a commit message.
         """
         if extra is None:
             extra = {}
 
         def fail(f, msg):
             raise error.Abort('%s: %s' % (f, msg))
 
         if not match:
             match = matchmod.always()
 
         if not force:
             vdirs = []
             match.explicitdir = vdirs.append
             match.bad = fail
 
         # lock() for recent changelog (see issue4368)
         with self.wlock(), self.lock():
             wctx = self[None]
             merge = len(wctx.parents()) > 1
 
             if not force and merge and not match.always():
                 raise error.Abort(_('cannot partially commit a merge '
                                    '(do not specify files or patterns)'))
 
             status = self.status(match=match, clean=force)
             if force:
                 status.modified.extend(status.clean) # mq may commit clean files
 
             # check subrepos
             subs, commitsubs, newstate = subrepoutil.precommit(
                 self.ui, wctx, status, match, force=force)
 
             # make sure all explicit patterns are matched
             if not force:
                 self.checkcommitpatterns(wctx, vdirs, match, status, fail)
 
             cctx = context.workingcommitctx(self, status,
                                             text, user, date, extra)
 
             # internal config: ui.allowemptycommit
             allowemptycommit = (wctx.branch() != wctx.p1().branch()
                                 or extra.get('close') or merge or cctx.files()
                                 or self.ui.configbool('ui', 'allowemptycommit'))
             if not allowemptycommit:
                 return None
 
             if merge and cctx.deleted():
                 raise error.Abort(_("cannot commit merge with missing files"))
 
             ms = mergemod.mergestate.read(self)
             mergeutil.checkunresolved(ms)
 
             if editor:
                 cctx._text = editor(self, cctx, subs)
             edited = (text != cctx._text)
 
             # Save commit message in case this transaction gets rolled back
             # (e.g. by a pretxncommit hook).  Leave the content alone on
             # the assumption that the user will use the same editor again.
             msgfn = self.savecommitmessage(cctx._text)
 
             # commit subs and write new state
             if subs:
                 uipathfn = scmutil.getuipathfn(self)
                 for s in sorted(commitsubs):
                     sub = wctx.sub(s)
                     self.ui.status(_('committing subrepository %s\n') %
                                    uipathfn(subrepoutil.subrelpath(sub)))
                     sr = sub.commit(cctx._text, user, date)
                     newstate[s] = (newstate[s][0], sr)
                 subrepoutil.writestate(self, newstate)
 
             p1, p2 = self.dirstate.parents()
             hookp1, hookp2 = hex(p1), (p2 != nullid and hex(p2) or '')
             try:
                 self.hook("precommit", throw=True, parent1=hookp1,
                           parent2=hookp2)
                 with self.transaction('commit'):
                     ret = self.commitctx(cctx, True)
                     # update bookmarks, dirstate and mergestate
                     bookmarks.update(self, [p1, p2], ret)
                     cctx.markcommitted(ret)
                     ms.reset()
             except: # re-raises
                 if edited:
                     self.ui.write(
                         _('note: commit message saved in %s\n') % msgfn)
                 raise
 
         def commithook():
             # hack for command that use a temporary commit (eg: histedit)
             # temporary commit got stripped before hook release
             if self.changelog.hasnode(ret):
                 self.hook("commit", node=hex(ret), parent1=hookp1,
                           parent2=hookp2)
         self._afterlock(commithook)
         return ret
 
     @unfilteredmethod
     def commitctx(self, ctx, error=False):
         """Add a new revision to current repository.
         Revision information is passed via the context argument.
 
         ctx.files() should list all files involved in this commit, i.e.
         modified/added/removed files. On merge, it may be wider than the
         ctx.files() to be committed, since any file nodes derived directly
         from p1 or p2 are excluded from the committed ctx.files().
         """
 
         p1, p2 = ctx.p1(), ctx.p2()
         user = ctx.user()
 
         writecopiesto = self.ui.config('experimental', 'copies.write-to')
         writefilecopymeta = writecopiesto != 'changeset-only'
         p1copies, p2copies = None, None
         if writecopiesto in ('changeset-only', 'compatibility'):
             p1copies = ctx.p1copies()
             p2copies = ctx.p2copies()
         with self.lock(), self.transaction("commit") as tr:
             trp = weakref.proxy(tr)
 
             if ctx.manifestnode():
                 # reuse an existing manifest revision
                 self.ui.debug('reusing known manifest\n')
                 mn = ctx.manifestnode()
                 files = ctx.files()
             elif ctx.files():
                 m1ctx = p1.manifestctx()
                 m2ctx = p2.manifestctx()
                 mctx = m1ctx.copy()
 
                 m = mctx.read()
                 m1 = m1ctx.read()
                 m2 = m2ctx.read()
 
                 # check in files
                 added = []
                 changed = []
                 removed = list(ctx.removed())
                 linkrev = len(self)
                 self.ui.note(_("committing files:\n"))
                 uipathfn = scmutil.getuipathfn(self)
                 for f in sorted(ctx.modified() + ctx.added()):
                     self.ui.note(uipathfn(f) + "\n")
                     try:
                         fctx = ctx[f]
                         if fctx is None:
                             removed.append(f)
                         else:
                             added.append(f)
                             m[f] = self._filecommit(fctx, m1, m2, linkrev,
                                                     trp, changed,
                                                     writefilecopymeta)
                             m.setflag(f, fctx.flags())
                     except OSError:
                         self.ui.warn(_("trouble committing %s!\n") %
                                      uipathfn(f))
                         raise
                     except IOError as inst:
                         errcode = getattr(inst, 'errno', errno.ENOENT)
                         if error or errcode and errcode != errno.ENOENT:
                             self.ui.warn(_("trouble committing %s!\n") %
                                          uipathfn(f))
                         raise
 
                 # update manifest
                 removed = [f for f in sorted(removed) if f in m1 or f in m2]
                 drop = [f for f in removed if f in m]
                 for f in drop:
                     del m[f]
                 files = changed + removed
                 md = None
                 if not files:
                     # if no "files" actually changed in terms of the changelog,
                     # try hard to detect unmodified manifest entry so that the
                     # exact same commit can be reproduced later on convert.
                     md = m1.diff(m, scmutil.matchfiles(self, ctx.files()))
                 if not files and md:
                     self.ui.debug('not reusing manifest (no file change in '
                                   'changelog, but manifest differs)\n')
                 if files or md:
                     self.ui.note(_("committing manifest\n"))
                     # we're using narrowmatch here since it's already applied at
                     # other stages (such as dirstate.walk), so we're already
                     # ignoring things outside of narrowspec in most cases. The
                     # one case where we might have files outside the narrowspec
                     # at this point is merges, and we already error out in the
                     # case where the merge has files outside of the narrowspec,
                     # so this is safe.
                     mn = mctx.write(trp, linkrev,
                                     p1.manifestnode(), p2.manifestnode(),
                                     added, drop, match=self.narrowmatch())
                 else:
-                    self.ui.debug('reusing manifest form p1 (listed files '
+                    self.ui.debug('reusing manifest from p1 (listed files '
                                   'actually unchanged)\n')
                     mn = p1.manifestnode()
             else:
                 self.ui.debug('reusing manifest from p1 (no file change)\n')
                 mn = p1.manifestnode()
                 files = []
 
             # update changelog
             self.ui.note(_("committing changelog\n"))
             self.changelog.delayupdate(tr)
             n = self.changelog.add(mn, files, ctx.description(),
                                    trp, p1.node(), p2.node(),
                                    user, ctx.date(), ctx.extra().copy(),
                                    p1copies, p2copies)
             xp1, xp2 = p1.hex(), p2 and p2.hex() or ''
             self.hook('pretxncommit', throw=True, node=hex(n), parent1=xp1,
                       parent2=xp2)
             # set the new commit is proper phase
             targetphase = subrepoutil.newcommitphase(self.ui, ctx)
             if targetphase:
                 # retract boundary do not alter parent changeset.
                 # if a parent have higher the resulting phase will
                 # be compliant anyway
                 #
                 # if minimal phase was 0 we don't need to retract anything
                 phases.registernew(self, tr, targetphase, [n])
             return n
 
     @unfilteredmethod
     def destroying(self):
         '''Inform the repository that nodes are about to be destroyed.
         Intended for use by strip and rollback, so there's a common
         place for anything that has to be done before destroying history.
 
         This is mostly useful for saving state that is in memory and waiting
         to be flushed when the current lock is released. Because a call to
         destroyed is imminent, the repo will be invalidated causing those
         changes to stay in memory (waiting for the next unlock), or vanish
         completely.
         '''
         # When using the same lock to commit and strip, the phasecache is left
         # dirty after committing. Then when we strip, the repo is invalidated,
         # causing those changes to disappear.
         if '_phasecache' in vars(self):
             self._phasecache.write()
 
     @unfilteredmethod
     def destroyed(self):
         '''Inform the repository that nodes have been destroyed.
         Intended for use by strip and rollback, so there's a common
         place for anything that has to be done after destroying history.
         '''
         # When one tries to:
         # 1) destroy nodes thus calling this method (e.g. strip)
         # 2) use phasecache somewhere (e.g. commit)
         #
         # then 2) will fail because the phasecache contains nodes that were
         # removed. We can either remove phasecache from the filecache,
         # causing it to reload next time it is accessed, or simply filter
         # the removed nodes now and write the updated cache.
         self._phasecache.filterunknown(self)
         self._phasecache.write()
 
         # refresh all repository caches
         self.updatecaches()
 
         # Ensure the persistent tag cache is updated.  Doing it now
         # means that the tag cache only has to worry about destroyed
         # heads immediately after a strip/rollback.  That in turn
         # guarantees that "cachetip == currenttip" (comparing both rev
         # and node) always means no nodes have been added or destroyed.
 
         # XXX this is suboptimal when qrefresh'ing: we strip the current
         # head, refresh the tag cache, then immediately add a new head.
         # But I think doing it this way is necessary for the "instant
         # tag cache retrieval" case to work.
         self.invalidate()
 
     def status(self, node1='.', node2=None, match=None,
                ignored=False, clean=False, unknown=False,
                listsubrepos=False):
         '''a convenience method that calls node1.status(node2)'''
         return self[node1].status(node2, match, ignored, clean, unknown,
                                   listsubrepos)
 
     def addpostdsstatus(self, ps):
         """Add a callback to run within the wlock, at the point at which status
         fixups happen.
 
         On status completion, callback(wctx, status) will be called with the
         wlock held, unless the dirstate has changed from underneath or the wlock
         couldn't be grabbed.
 
         Callbacks should not capture and use a cached copy of the dirstate --
         it might change in the meanwhile. Instead, they should access the
         dirstate via wctx.repo().dirstate.
 
         This list is emptied out after each status run -- extensions should
         make sure it adds to this list each time dirstate.status is called.
         Extensions should also make sure they don't call this for statuses
         that don't involve the dirstate.
         """
 
         # The list is located here for uniqueness reasons -- it is actually
         # managed by the workingctx, but that isn't unique per-repo.
         self._postdsstatus.append(ps)
 
     def postdsstatus(self):
         """Used by workingctx to get the list of post-dirstate-status hooks."""
         return self._postdsstatus
 
     def clearpostdsstatus(self):
         """Used by workingctx to clear post-dirstate-status hooks."""
         del self._postdsstatus[:]
 
     def heads(self, start=None):
         if start is None:
             cl = self.changelog
             headrevs = reversed(cl.headrevs())
             return [cl.node(rev) for rev in headrevs]
 
         heads = self.changelog.heads(start)
         # sort the output in rev descending order
         return sorted(heads, key=self.changelog.rev, reverse=True)
 
     def branchheads(self, branch=None, start=None, closed=False):
         '''return a (possibly filtered) list of heads for the given branch
 
         Heads are returned in topological order, from newest to oldest.
         If branch is None, use the dirstate branch.
         If start is not None, return only heads reachable from start.
         If closed is True, return heads that are marked as closed as well.
         '''
         if branch is None:
             branch = self[None].branch()
         branches = self.branchmap()
         if not branches.hasbranch(branch):
             return []
         # the cache returns heads ordered lowest to highest
         bheads = list(reversed(branches.branchheads(branch, closed=closed)))
         if start is not None:
             # filter out the heads that cannot be reached from startrev
             fbheads = set(self.changelog.nodesbetween([start], bheads)[2])
             bheads = [h for h in bheads if h in fbheads]
         return bheads
 
     def branches(self, nodes):
         if not nodes:
             nodes = [self.changelog.tip()]
         b = []
         for n in nodes:
             t = n
             while True:
                 p = self.changelog.parents(n)
                 if p[1] != nullid or p[0] == nullid:
                     b.append((t, n, p[0], p[1]))
                     break
                 n = p[0]
         return b
 
     def between(self, pairs):
         r = []
 
         for top, bottom in pairs:
             n, l, i = top, [], 0
             f = 1
 
             while n != bottom and n != nullid:
                 p = self.changelog.parents(n)[0]
                 if i == f:
                     l.append(n)
                     f = f * 2
                 n = p
                 i += 1
 
             r.append(l)
 
         return r
 
     def checkpush(self, pushop):
         """Extensions can override this function if additional checks have
         to be performed before pushing, or call it if they override push
         command.
         """
 
     @unfilteredpropertycache
     def prepushoutgoinghooks(self):
         """Return util.hooks consists of a pushop with repo, remote, outgoing
         methods, which are called before pushing changesets.
         """
         return util.hooks()
 
     def pushkey(self, namespace, key, old, new):
         try:
             tr = self.currenttransaction()
             hookargs = {}
             if tr is not None:
                 hookargs.update(tr.hookargs)
             hookargs = pycompat.strkwargs(hookargs)
             hookargs[r'namespace'] = namespace
             hookargs[r'key'] = key
             hookargs[r'old'] = old
             hookargs[r'new'] = new
             self.hook('prepushkey', throw=True, **hookargs)
         except error.HookAbort as exc:
             self.ui.write_err(_("pushkey-abort: %s\n") % exc)
             if exc.hint:
                 self.ui.write_err(_("(%s)\n") % exc.hint)
             return False
         self.ui.debug('pushing key for "%s:%s"\n' % (namespace, key))
         ret = pushkey.push(self, namespace, key, old, new)
         def runhook():
             self.hook('pushkey', namespace=namespace, key=key, old=old, new=new,
                       ret=ret)
         self._afterlock(runhook)
         return ret
 
     def listkeys(self, namespace):
         self.hook('prelistkeys', throw=True, namespace=namespace)
         self.ui.debug('listing keys for "%s"\n' % namespace)
         values = pushkey.list(self, namespace)
         self.hook('listkeys', namespace=namespace, values=values)
         return values
 
     def debugwireargs(self, one, two, three=None, four=None, five=None):
         '''used to test argument passing over the wire'''
         return "%s %s %s %s %s" % (one, two, pycompat.bytestr(three),
                                    pycompat.bytestr(four),
                                    pycompat.bytestr(five))
 
     def savecommitmessage(self, text):
         fp = self.vfs('last-message.txt', 'wb')
         try:
             fp.write(text)
         finally:
             fp.close()
         return self.pathto(fp.name[len(self.root) + 1:])
 
 # used to avoid circular references so destructors work
 def aftertrans(files):
     renamefiles = [tuple(t) for t in files]
     def a():
         for vfs, src, dest in renamefiles:
             # if src and dest refer to a same file, vfs.rename is a no-op,
             # leaving both src and dest on disk. delete dest to make sure
             # the rename couldn't be such a no-op.
             vfs.tryunlink(dest)
             try:
                 vfs.rename(src, dest)
             except OSError: # journal file does not yet exist
                 pass
     return a
 
 def undoname(fn):
     base, name = os.path.split(fn)
     assert name.startswith('journal')
     return os.path.join(base, name.replace('journal', 'undo', 1))
 
 def instance(ui, path, create, intents=None, createopts=None):
     localpath = util.urllocalpath(path)
     if create:
         createrepository(ui, localpath, createopts=createopts)
 
     return makelocalrepository(ui, localpath, intents=intents)
 
 def islocal(path):
     return True
 
 def defaultcreateopts(ui, createopts=None):
     """Populate the default creation options for a repository.
 
     A dictionary of explicitly requested creation options can be passed
     in. Missing keys will be populated.
     """
     createopts = dict(createopts or {})
 
     if 'backend' not in createopts:
         # experimental config: storage.new-repo-backend
         createopts['backend'] = ui.config('storage', 'new-repo-backend')
 
     return createopts
 
 def newreporequirements(ui, createopts):
     """Determine the set of requirements for a new local repository.
 
     Extensions can wrap this function to specify custom requirements for
     new repositories.
     """
     # If the repo is being created from a shared repository, we copy
     # its requirements.
     if 'sharedrepo' in createopts:
         requirements = set(createopts['sharedrepo'].requirements)
         if createopts.get('sharedrelative'):
             requirements.add('relshared')
         else:
             requirements.add('shared')
 
         return requirements
 
     if 'backend' not in createopts:
         raise error.ProgrammingError('backend key not present in createopts; '
                                      'was defaultcreateopts() called?')
 
     if createopts['backend'] != 'revlogv1':
         raise error.Abort(_('unable to determine repository requirements for '
                             'storage backend: %s') % createopts['backend'])
 
     requirements = {'revlogv1'}
     if ui.configbool('format', 'usestore'):
         requirements.add('store')
         if ui.configbool('format', 'usefncache'):
             requirements.add('fncache')
             if ui.configbool('format', 'dotencode'):
                 requirements.add('dotencode')
 
     compengine = ui.config('format', 'revlog-compression')
     if compengine not in util.compengines:
         raise error.Abort(_('compression engine %s defined by '
                             'format.revlog-compression not available') %
                           compengine,
                           hint=_('run "hg debuginstall" to list available '
                                  'compression engines'))
 
     # zlib is the historical default and doesn't need an explicit requirement.
     elif compengine == 'zstd':
         requirements.add('revlog-compression-zstd')
     elif compengine != 'zlib':
         requirements.add('exp-compression-%s' % compengine)
 
     if scmutil.gdinitconfig(ui):
         requirements.add('generaldelta')
         if ui.configbool('format', 'sparse-revlog'):
             requirements.add(SPARSEREVLOG_REQUIREMENT)
     if ui.configbool('experimental', 'treemanifest'):
         requirements.add('treemanifest')
 
     revlogv2 = ui.config('experimental', 'revlogv2')
     if revlogv2 == 'enable-unstable-format-and-corrupt-my-data':
         requirements.remove('revlogv1')
         # generaldelta is implied by revlogv2.
         requirements.discard('generaldelta')
         requirements.add(REVLOGV2_REQUIREMENT)
     # experimental config: format.internal-phase
     if ui.configbool('format', 'internal-phase'):
         requirements.add('internal-phase')
 
     if createopts.get('narrowfiles'):
         requirements.add(repository.NARROW_REQUIREMENT)
 
     if createopts.get('lfs'):
         requirements.add('lfs')
 
     return requirements
 
 def filterknowncreateopts(ui, createopts):
     """Filters a dict of repo creation options against options that are known.
 
     Receives a dict of repo creation options and returns a dict of those
     options that we don't know how to handle.
 
     This function is called as part of repository creation. If the
     returned dict contains any items, repository creation will not
     be allowed, as it means there was a request to create a repository
     with options not recognized by loaded code.
 
     Extensions can wrap this function to filter out creation options
     they know how to handle.
     """
     known = {
         'backend',
         'lfs',
         'narrowfiles',
         'sharedrepo',
         'sharedrelative',
         'shareditems',
         'shallowfilestore',
     }
 
     return {k: v for k, v in createopts.items() if k not in known}
 
 def createrepository(ui, path, createopts=None):
     """Create a new repository in a vfs.
 
     ``path`` path to the new repo's working directory.
     ``createopts`` options for the new repository.
 
     The following keys for ``createopts`` are recognized:
 
     backend
        The storage backend to use.
     lfs
        Repository will be created with ``lfs`` requirement. The lfs extension
        will automatically be loaded when the repository is accessed.
     narrowfiles
        Set up repository to support narrow file storage.
     sharedrepo
        Repository object from which storage should be shared.
     sharedrelative
        Boolean indicating if the path to the shared repo should be
        stored as relative. By default, the pointer to the "parent" repo
        is stored as an absolute path.
     shareditems
        Set of items to share to the new repository (in addition to storage).
     shallowfilestore
        Indicates that storage for files should be shallow (not all ancestor
        revisions are known).
     """
     createopts = defaultcreateopts(ui, createopts=createopts)
 
     unknownopts = filterknowncreateopts(ui, createopts)
 
     if not isinstance(unknownopts, dict):
         raise error.ProgrammingError('filterknowncreateopts() did not return '
                                      'a dict')
 
     if unknownopts:
         raise error.Abort(_('unable to create repository because of unknown '
                             'creation option: %s') %
                           ', '.join(sorted(unknownopts)),
                           hint=_('is a required extension not loaded?'))
 
     requirements = newreporequirements(ui, createopts=createopts)
 
     wdirvfs = vfsmod.vfs(path, expandpath=True, realpath=True)
 
     hgvfs = vfsmod.vfs(wdirvfs.join(b'.hg'))
     if hgvfs.exists():
         raise error.RepoError(_('repository %s already exists') % path)
 
     if 'sharedrepo' in createopts:
         sharedpath = createopts['sharedrepo'].sharedpath
 
         if createopts.get('sharedrelative'):
             try:
                 sharedpath = os.path.relpath(sharedpath, hgvfs.base)
             except (IOError, ValueError) as e:
                 # ValueError is raised on Windows if the drive letters differ
                 # on each path.
                 raise error.Abort(_('cannot calculate relative path'),
                                   hint=stringutil.forcebytestr(e))
 
     if not wdirvfs.exists():
         wdirvfs.makedirs()
 
     hgvfs.makedir(notindexed=True)
     if 'sharedrepo' not in createopts:
         hgvfs.mkdir(b'cache')
     hgvfs.mkdir(b'wcache')
 
     if b'store' in requirements and 'sharedrepo' not in createopts:
         hgvfs.mkdir(b'store')
 
         # We create an invalid changelog outside the store so very old
         # Mercurial versions (which didn't know about the requirements
         # file) encounter an error on reading the changelog. This
         # effectively locks out old clients and prevents them from
         # mucking with a repo in an unknown format.
         #
         # The revlog header has version 2, which won't be recognized by
         # such old clients.
         hgvfs.append(b'00changelog.i',
                      b'\0\0\0\2 dummy changelog to prevent using the old repo '
                      b'layout')
 
     scmutil.writerequires(hgvfs, requirements)
 
     # Write out file telling readers where to find the shared store.
     if 'sharedrepo' in createopts:
         hgvfs.write(b'sharedpath', sharedpath)
 
     if createopts.get('shareditems'):
         shared = b'\n'.join(sorted(createopts['shareditems'])) + b'\n'
         hgvfs.write(b'shared', shared)
 
 def poisonrepository(repo):
     """Poison a repository instance so it can no longer be used."""
     # Perform any cleanup on the instance.
     repo.close()
 
     # Our strategy is to replace the type of the object with one that
     # has all attribute lookups result in error.
     #
     # But we have to allow the close() method because some constructors
     # of repos call close() on repo references.
     class poisonedrepository(object):
         def __getattribute__(self, item):
             if item == r'close':
                 return object.__getattribute__(self, item)
 
             raise error.ProgrammingError('repo instances should not be used '
                                          'after unshare')
 
         def close(self):
             pass
 
     # We may have a repoview, which intercepts __setattr__. So be sure
     # we operate at the lowest level possible.
     object.__setattr__(repo, r'__class__', poisonedrepository)

tests/test-graft.t

@@ -1,2410 +1,2410
   $ cat >> $HGRCPATH <<EOF
   > [extdiff]
   > # for portability:
   > pdiff = sh "$RUNTESTDIR/pdiff"
   > EOF
 
 Create a repo with some stuff in it:
 
   $ hg init a
   $ cd a
   $ echo a > a
   $ echo a > d
   $ echo a > e
   $ hg ci -qAm0
   $ echo b > a
   $ hg ci -m1 -u bar
   $ hg mv a b
   $ hg ci -m2
   $ hg cp b c
   $ hg ci -m3 -u baz
   $ echo b > d
   $ echo f > e
   $ hg ci -m4
   $ hg up -q 3
   $ echo b > e
   $ hg branch -q stable
   $ hg ci -m5
   $ hg merge -q default --tool internal:local # for conflicts in e, choose 5 and ignore 4
   $ hg branch -q default
   $ hg ci -m6
   $ hg phase --public 3
   $ hg phase --force --secret 6
 
   $ hg log -G --template '{author}@{rev}.{phase}: {desc}\n'
   @    [e-mail]: 6
   |\
   | o  [e-mail]: 5
   | |
   o |  [e-mail]: 4
   |/
   o  [e-mail]: 3
   |
   o  [e-mail]: 2
   |
   o  [e-mail]: 1
   |
   o  [e-mail]: 0
   
 Test --base for grafting the merge of 4 from the perspective of 5, thus only getting the change to d
 
   $ hg up -cqr 3
   $ hg graft -r 6 --base 5
   grafting 6:25a2b029d3ae "6" (tip)
   merging e
   $ hg st --change .
   M d
 
   $ hg -q strip . --config extensions.strip=
 
 Test --base for collapsing changesets 2 and 3, thus getting both b and c
 
   $ hg up -cqr 0
   $ hg graft -r 3 --base 1
   grafting 3:4c60f11aa304 "3"
   merging a and b to b
   merging a and c to c
   $ hg st --change .
   A b
   A c
   R a
 
   $ hg -q strip . --config extensions.strip=
 
 Specifying child as --base revision fails safely (perhaps slightly confusing, but consistent)
 
   $ hg graft -r 2 --base 3
   grafting 2:5c095ad7e90f "2"
   note: possible conflict - c was deleted and renamed to:
    a
   note: graft of 2:5c095ad7e90f created no changes to commit
 
 Can't continue without starting:
 
   $ hg -q up -cr tip
   $ hg rm -q e
   $ hg graft --continue
   abort: no graft in progress
   [255]
   $ hg revert -r . -q e
 
 Need to specify a rev:
 
   $ hg graft
   abort: no revisions specified
   [255]
 
 Can't graft ancestor:
 
   $ hg graft 1 2
   skipping ancestor revision 1:5d205f8b35b6
   skipping ancestor revision 2:5c095ad7e90f
   [255]
 
 Specify revisions with -r:
 
   $ hg graft -r 1 -r 2
   skipping ancestor revision 1:5d205f8b35b6
   skipping ancestor revision 2:5c095ad7e90f
   [255]
 
   $ hg graft -r 1 2
   warning: inconsistent use of --rev might give unexpected revision ordering!
   skipping ancestor revision 2:5c095ad7e90f
   skipping ancestor revision 1:5d205f8b35b6
   [255]
 
 Conflicting date/user options:
 
   $ hg up -q 0
   $ hg graft -U --user foo 2
   abort: --user and --currentuser are mutually exclusive
   [255]
   $ hg graft -D --date '0 0' 2
   abort: --date and --currentdate are mutually exclusive
   [255]
 
 Can't graft with dirty wd:
 
   $ hg up -q 0
   $ echo foo > a
   $ hg graft 1
   abort: uncommitted changes
   [255]
   $ hg revert a
 
 Graft a rename:
 (this also tests that editor is invoked if '--edit' is specified)
 
   $ hg status --rev "2^1" --rev 2
   A b
   R a
   $ HGEDITOR=cat hg graft 2 -u foo --edit
   grafting 2:5c095ad7e90f "2"
   merging a and b to b
   2
   
   
   HG: Enter commit message.  Lines beginning with 'HG:' are removed.
   HG: Leave message empty to abort commit.
   HG: --
   HG: user: foo
   HG: branch 'default'
   HG: added b
   HG: removed a
   $ hg export tip --git
   # HG changeset patch
   # User foo
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
   # Node ID ef0ef43d49e79e81ddafdc7997401ba0041efc82
   # Parent  68795b066622ca79a25816a662041d8f78f3cd9e
   2
   
   diff --git a/a b/b
   rename from a
   rename to b
 
 Look for extra:source
 
   $ hg log --debug -r tip
   changeset:   7:ef0ef43d49e79e81ddafdc7997401ba0041efc82
   tag:         tip
   phase:       draft
   parent:      0:68795b066622ca79a25816a662041d8f78f3cd9e
   parent:      -1:0000000000000000000000000000000000000000
   manifest:    7:e59b6b228f9cbf9903d5e9abf996e083a1f533eb
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   files+:      b
   files-:      a
   extra:       branch=default
   extra:       source=5c095ad7e90f871700f02dd1fa5012cb4498a2d4
   description:
   2
   
   
 
 Graft out of order, skipping a merge and a duplicate
 (this also tests that editor is not invoked if '--edit' is not specified)
 
   $ hg graft 1 5 4 3 'merge()' 2 -n
   skipping ungraftable merge revision 6
   skipping revision 2:5c095ad7e90f (already grafted to 7:ef0ef43d49e7)
   grafting 1:5d205f8b35b6 "1"
   grafting 5:97f8bfe72746 "5"
   grafting 4:9c233e8e184d "4"
   grafting 3:4c60f11aa304 "3"
 
   $ HGEDITOR=cat hg graft 1 5 'merge()' 2 --debug
   skipping ungraftable merge revision 6
   scanning for duplicate grafts
   skipping revision 2:5c095ad7e90f (already grafted to 7:ef0ef43d49e7)
   grafting 1:5d205f8b35b6 "1"
     unmatched files in local:
      b
     all copies found (* = to merge, ! = divergent, % = renamed and deleted):
      src: 'a' -> dst: 'b' *
     checking for directory renames
   resolving manifests
    branchmerge: True, force: True, partial: False
    ancestor: 68795b066622, local: ef0ef43d49e7+, remote: 5d205f8b35b6
    preserving b for resolve of b
   starting 4 threads for background file closing (?)
    b: local copied/moved from a -> m (premerge)
   picked tool ':merge' for b (binary False symlink False changedelete False)
   merging b and a to b
   my b@ef0ef43d49e7+ other a@5d205f8b35b6 ancestor a@68795b066622
    premerge successful
   committing files:
   b
   committing manifest
   committing changelog
   updating the branch cache
   grafting 5:97f8bfe72746 "5"
     all copies found (* = to merge, ! = divergent, % = renamed and deleted):
      src: 'c' -> dst: 'b' 
     checking for directory renames
   resolving manifests
    branchmerge: True, force: True, partial: False
    ancestor: 4c60f11aa304, local: 6b9e5368ca4e+, remote: 97f8bfe72746
    e: remote is newer -> g
   getting e
   committing files:
   e
   committing manifest
   committing changelog
   updating the branch cache
   $ HGEDITOR=cat hg graft 4 3 --log --debug
   scanning for duplicate grafts
   grafting 4:9c233e8e184d "4"
     all copies found (* = to merge, ! = divergent, % = renamed and deleted):
      src: 'c' -> dst: 'b' 
     checking for directory renames
   resolving manifests
    branchmerge: True, force: True, partial: False
    ancestor: 4c60f11aa304, local: 1905859650ec+, remote: 9c233e8e184d
    preserving e for resolve of e
    d: remote is newer -> g
   getting d
    e: versions differ -> m (premerge)
   picked tool ':merge' for e (binary False symlink False changedelete False)
   merging e
   my e@1905859650ec+ other e@9c233e8e184d ancestor e@4c60f11aa304
    e: versions differ -> m (merge)
   picked tool ':merge' for e (binary False symlink False changedelete False)
   my e@1905859650ec+ other e@9c233e8e184d ancestor e@4c60f11aa304
   warning: conflicts while merging e! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
 Summary should mention graft:
 
   $ hg summary |grep graft
   commit: 2 modified, 2 unknown, 1 unresolved (graft in progress)
 
 Using status to get more context
 
   $ hg status --verbose
   M d
   M e
   ? a.orig
   ? e.orig
   # The repository is in an unfinished *graft* state.
   
   # Unresolved merge conflicts:
   # 
   #     e
   # 
   # To mark files as resolved:  hg resolve --mark FILE
   
   # To continue:    hg graft --continue
   # To abort:       hg graft --abort
   
 
 Commit while interrupted should fail:
 
   $ hg ci -m 'commit interrupted graft'
   abort: graft in progress
   (use 'hg graft --continue' or 'hg graft --stop' to stop)
   [255]
 
 Abort the graft and try committing:
 
   $ hg up -C .
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo c >> e
   $ hg ci -mtest
 
   $ hg strip . --config extensions.strip=
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   saved backup bundle to $TESTTMP/a/.hg/strip-backup/*-backup.hg (glob)
 
 Graft again:
 
   $ hg graft 1 5 4 3 'merge()' 2
   skipping ungraftable merge revision 6
   skipping revision 2:5c095ad7e90f (already grafted to 7:ef0ef43d49e7)
   skipping revision 1:5d205f8b35b6 (already grafted to 8:6b9e5368ca4e)
   skipping revision 5:97f8bfe72746 (already grafted to 9:1905859650ec)
   grafting 4:9c233e8e184d "4"
   merging e
   warning: conflicts while merging e! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
 Continue without resolve should fail:
 
   $ hg graft -c
   grafting 4:9c233e8e184d "4"
   abort: unresolved merge conflicts (see 'hg help resolve')
   [255]
 
 Fix up:
 
   $ echo b > e
   $ hg resolve -m e
   (no more unresolved files)
   continue: hg graft --continue
 
 Continue with a revision should fail:
 
   $ hg graft -c 6
   abort: can't specify --continue and revisions
   [255]
 
   $ hg graft -c -r 6
   abort: can't specify --continue and revisions
   [255]
 
 Continue for real, clobber usernames
 
   $ hg graft -c -U
   grafting 4:9c233e8e184d "4"
   grafting 3:4c60f11aa304 "3"
 
 Compare with original:
 
   $ hg diff -r 6
   $ hg status --rev 0:. -C
   M d
   M e
   A b
     a
   A c
     a
   R a
 
 View graph:
 
   $ hg log -G --template '{author}@{rev}.{phase}: {desc}\n'
   @  [e-mail]: 3
   |
   o  [e-mail]: 4
   |
   o  [e-mail]: 5
   |
   o  [e-mail]: 1
   |
   o  [e-mail]: 2
   |
   | o    [e-mail]: 6
   | |\
   | | o  [e-mail]: 5
   | | |
   | o |  [e-mail]: 4
   | |/
   | o  [e-mail]: 3
   | |
   | o  [e-mail]: 2
   | |
   | o  [e-mail]: 1
   |/
   o  [e-mail]: 0
   
 Graft again onto another branch should preserve the original source
   $ hg up -q 0
   $ echo 'g'>g
   $ hg add g
   $ hg ci -m 7
   created new head
   $ hg graft 7
   grafting 7:ef0ef43d49e7 "2"
 
   $ hg log -r 7 --template '{rev}:{node}\n'
   7:ef0ef43d49e79e81ddafdc7997401ba0041efc82
   $ hg log -r 2 --template '{rev}:{node}\n'
   2:5c095ad7e90f871700f02dd1fa5012cb4498a2d4
 
   $ hg log --debug -r tip
   changeset:   13:7a4785234d87ec1aa420ed6b11afe40fa73e12a9
   tag:         tip
   phase:       draft
   parent:      12:b592ea63bb0c19a6c5c44685ee29a2284f9f1b8f
   parent:      -1:0000000000000000000000000000000000000000
   manifest:    13:dc313617b8c32457c0d589e0dbbedfe71f3cd637
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   files+:      b
   files-:      a
   extra:       branch=default
   extra:       intermediate-source=ef0ef43d49e79e81ddafdc7997401ba0041efc82
   extra:       source=5c095ad7e90f871700f02dd1fa5012cb4498a2d4
   description:
   2
   
   
 Disallow grafting an already grafted cset onto its original branch
   $ hg up -q 6
   $ hg graft 7
   skipping already grafted revision 7:ef0ef43d49e7 (was grafted from 2:5c095ad7e90f)
   [255]
 
   $ hg pdiff --config extensions.extdiff= --patch -r 2 -r 13
   --- */hg-5c095ad7e90f.patch	* (glob)
   +++ */hg-7a4785234d87.patch	* (glob)
   @@ -1,18 +1,18 @@
    # HG changeset patch
   -# User test
   +# User foo
    # Date 0 0
    #      Thu Jan 01 00:00:00 1970 +0000
   -# Node ID 5c095ad7e90f871700f02dd1fa5012cb4498a2d4
   -# Parent  5d205f8b35b66bc36375c9534ffd3237730e8f04
   +# Node ID 7a4785234d87ec1aa420ed6b11afe40fa73e12a9
   +# Parent  b592ea63bb0c19a6c5c44685ee29a2284f9f1b8f
    2
    
   -diff -r 5d205f8b35b6 -r 5c095ad7e90f a
   +diff -r b592ea63bb0c -r 7a4785234d87 a
    --- a/a	Thu Jan 01 00:00:00 1970 +0000
    +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
    @@ -1,1 +0,0 @@
   --b
   -diff -r 5d205f8b35b6 -r 5c095ad7e90f b
   +-a
   +diff -r b592ea63bb0c -r 7a4785234d87 b
    --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
    +++ b/b	Thu Jan 01 00:00:00 1970 +0000
    @@ -0,0 +1,1 @@
   -+b
   ++a
   [1]
 
   $ hg pdiff --config extensions.extdiff= --patch -r 2 -r 13 -X .
   --- */hg-5c095ad7e90f.patch	* (glob)
   +++ */hg-7a4785234d87.patch	* (glob)
   @@ -1,8 +1,8 @@
    # HG changeset patch
   -# User test
   +# User foo
    # Date 0 0
    #      Thu Jan 01 00:00:00 1970 +0000
   -# Node ID 5c095ad7e90f871700f02dd1fa5012cb4498a2d4
   -# Parent  5d205f8b35b66bc36375c9534ffd3237730e8f04
   +# Node ID 7a4785234d87ec1aa420ed6b11afe40fa73e12a9
   +# Parent  b592ea63bb0c19a6c5c44685ee29a2284f9f1b8f
    2
    
   [1]
 
 Disallow grafting already grafted csets with the same origin onto each other
   $ hg up -q 13
   $ hg graft 2
   skipping revision 2:5c095ad7e90f (already grafted to 13:7a4785234d87)
   [255]
   $ hg graft 7
   skipping already grafted revision 7:ef0ef43d49e7 (13:7a4785234d87 also has origin 2:5c095ad7e90f)
   [255]
 
   $ hg up -q 7
   $ hg graft 2
   skipping revision 2:5c095ad7e90f (already grafted to 7:ef0ef43d49e7)
   [255]
   $ hg graft tip
   skipping already grafted revision 13:7a4785234d87 (7:ef0ef43d49e7 also has origin 2:5c095ad7e90f)
   [255]
 
 Graft with --log
 
   $ hg up -Cq 1
   $ hg graft 3 --log -u foo
   grafting 3:4c60f11aa304 "3"
   warning: can't find ancestor for 'c' copied from 'b'!
   $ hg log --template '{rev}:{node|short} {parents} {desc}\n' -r tip
   14:0c921c65ef1e 1:5d205f8b35b6  3
   (grafted from 4c60f11aa304a54ae1c199feb94e7fc771e51ed8)
 
 Resolve conflicted graft
   $ hg up -q 0
   $ echo b > a
   $ hg ci -m 8
   created new head
   $ echo c > a
   $ hg ci -m 9
   $ hg graft 1 --tool internal:fail
   grafting 1:5d205f8b35b6 "1"
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
   $ hg resolve --all
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   [1]
   $ cat a
   <<<<<<< local: aaa4406d4f0a - test: 9
   c
   =======
   b
   >>>>>>> graft: 5d205f8b35b6 - bar: 1
   $ echo b > a
   $ hg resolve -m a
   (no more unresolved files)
   continue: hg graft --continue
   $ hg graft -c
   grafting 1:5d205f8b35b6 "1"
   $ hg export tip --git
   # HG changeset patch
   # User bar
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
   # Node ID f67661df0c4804d301f064f332b57e7d5ddaf2be
   # Parent  aaa4406d4f0ae9befd6e58c82ec63706460cbca6
   1
   
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -c
   +b
 
 Resolve conflicted graft with rename
   $ echo c > a
   $ hg ci -m 10
   $ hg graft 2 --tool internal:fail
   grafting 2:5c095ad7e90f "2"
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
   $ hg resolve --all
   merging a and b to b
   (no more unresolved files)
   continue: hg graft --continue
   $ hg graft -c
   grafting 2:5c095ad7e90f "2"
   $ hg export tip --git
   # HG changeset patch
   # User test
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
   # Node ID 9627f653b421c61fc1ea4c4e366745070fa3d2bc
   # Parent  ee295f490a40b97f3d18dd4c4f1c8936c233b612
   2
   
   diff --git a/a b/b
   rename from a
   rename to b
 
 Test simple origin(), with and without args
   $ hg log -r 'origin()'
   changeset:   1:5d205f8b35b6
   user:        bar
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     1
   
   changeset:   2:5c095ad7e90f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   3:4c60f11aa304
   user:        baz
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     3
   
   changeset:   4:9c233e8e184d
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     4
   
   changeset:   5:97f8bfe72746
   branch:      stable
   parent:      3:4c60f11aa304
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     5
   
   $ hg log -r 'origin(7)'
   changeset:   2:5c095ad7e90f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
 Now transplant a graft to test following through copies
   $ hg up -q 0
   $ hg branch -q dev
   $ hg ci -qm "dev branch"
   $ hg --config extensions.transplant= transplant -q 7
   $ hg log -r 'origin(.)'
   changeset:   2:5c095ad7e90f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
 Test that the graft and transplant markers in extra are converted, allowing
 origin() to still work.  Note that these recheck the immediately preceeding two
 tests.
   $ hg --quiet --config extensions.convert= --config convert.hg.saverev=True convert . ../converted
 
 The graft case
   $ hg -R ../converted log -r 7 --template "{rev}: {node}\n{join(extras, '\n')}\n"
   7: 7ae846e9111fc8f57745634250c7b9ac0a60689b
   branch=default
   convert_revision=ef0ef43d49e79e81ddafdc7997401ba0041efc82
   source=e0213322b2c1a5d5d236c74e79666441bee67a7d
   $ hg -R ../converted log -r 'origin(7)'
   changeset:   2:e0213322b2c1
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
 Test that template correctly expands more than one 'extra' (issue4362), and that
 'intermediate-source' is converted.
   $ hg -R ../converted log -r 13 --template "{extras % ' Extra: {extra}\n'}"
    Extra: branch=default
    Extra: convert_revision=7a4785234d87ec1aa420ed6b11afe40fa73e12a9
    Extra: intermediate-source=7ae846e9111fc8f57745634250c7b9ac0a60689b
    Extra: source=e0213322b2c1a5d5d236c74e79666441bee67a7d
 
 The transplant case
   $ hg -R ../converted log -r tip --template "{rev}: {node}\n{join(extras, '\n')}\n"
   21: fbb6c5cc81002f2b4b49c9d731404688bcae5ade
   branch=dev
   convert_revision=7e61b508e709a11d28194a5359bc3532d910af21
   transplant_source=z\xe8F\xe9\x11\x1f\xc8\xf5wEcBP\xc7\xb9\xac\n`h\x9b
   $ hg -R ../converted log -r 'origin(tip)'
   changeset:   2:e0213322b2c1
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
 
 Test simple destination
   $ hg log -r 'destination()'
   changeset:   7:ef0ef43d49e7
   parent:      0:68795b066622
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   8:6b9e5368ca4e
   user:        bar
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     1
   
   changeset:   9:1905859650ec
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     5
   
   changeset:   10:52dc0b4c6907
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     4
   
   changeset:   11:882b35362a6b
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     3
   
   changeset:   13:7a4785234d87
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   14:0c921c65ef1e
   parent:      1:5d205f8b35b6
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     3
   
   changeset:   17:f67661df0c48
   user:        bar
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     1
   
   changeset:   19:9627f653b421
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   21:7e61b508e709
   branch:      dev
   tag:         tip
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   $ hg log -r 'destination(2)'
   changeset:   7:ef0ef43d49e7
   parent:      0:68795b066622
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   13:7a4785234d87
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   19:9627f653b421
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   21:7e61b508e709
   branch:      dev
   tag:         tip
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
 Transplants of grafts can find a destination...
   $ hg log -r 'destination(7)'
   changeset:   21:7e61b508e709
   branch:      dev
   tag:         tip
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
 ... grafts of grafts unfortunately can't
   $ hg graft -q 13 --debug
   scanning for duplicate grafts
   grafting 13:7a4785234d87 "2"
     all copies found (* = to merge, ! = divergent, % = renamed and deleted):
      src: 'a' -> dst: 'b' *
     checking for directory renames
   resolving manifests
    branchmerge: True, force: True, partial: False
    ancestor: b592ea63bb0c, local: 7e61b508e709+, remote: 7a4785234d87
   starting 4 threads for background file closing (?)
   committing files:
   b
   warning: can't find ancestor for 'b' copied from 'a'!
-  reusing manifest form p1 (listed files actually unchanged)
+  reusing manifest from p1 (listed files actually unchanged)
   committing changelog
   updating the branch cache
   $ hg log -r 'destination(13)'
 All copies of a cset
   $ hg log -r 'origin(13) or destination(origin(13))'
   changeset:   2:5c095ad7e90f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   7:ef0ef43d49e7
   parent:      0:68795b066622
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   13:7a4785234d87
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   19:9627f653b421
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   21:7e61b508e709
   branch:      dev
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
   changeset:   22:3a4e92d81b97
   branch:      dev
   tag:         tip
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     2
   
 
 graft works on complex revset
 
   $ hg graft 'origin(13) or destination(origin(13))'
   skipping ancestor revision 21:7e61b508e709
   skipping ancestor revision 22:3a4e92d81b97
   skipping revision 2:5c095ad7e90f (already grafted to 22:3a4e92d81b97)
   grafting 7:ef0ef43d49e7 "2"
   warning: can't find ancestor for 'b' copied from 'a'!
   grafting 13:7a4785234d87 "2"
   warning: can't find ancestor for 'b' copied from 'a'!
   grafting 19:9627f653b421 "2"
   merging b
   warning: can't find ancestor for 'b' copied from 'a'!
 
 graft with --force (still doesn't graft merges)
 
   $ hg graft 19 0 6
   skipping ungraftable merge revision 6
   skipping ancestor revision 0:68795b066622
   skipping already grafted revision 19:9627f653b421 (22:3a4e92d81b97 also has origin 2:5c095ad7e90f)
   [255]
   $ hg graft 19 0 6 --force
   skipping ungraftable merge revision 6
   grafting 19:9627f653b421 "2"
   merging b
   warning: can't find ancestor for 'b' copied from 'a'!
   grafting 0:68795b066622 "0"
 
 graft --force after backout
 
   $ echo abc > a
   $ hg ci -m 28
   $ hg backout 28
   reverting a
   changeset 29:9d95e865b00c backs out changeset 28:cc20d29aec8d
   $ hg graft 28
   skipping ancestor revision 28:cc20d29aec8d
   [255]
   $ hg graft 28 --force
   grafting 28:cc20d29aec8d "28"
   merging a
   $ cat a
   abc
 
 graft --continue after --force
 
   $ echo def > a
   $ hg ci -m 31
   $ hg graft 28 --force --tool internal:fail
   grafting 28:cc20d29aec8d "28"
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
   $ hg resolve --all
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   [1]
   $ echo abc > a
   $ hg resolve -m a
   (no more unresolved files)
   continue: hg graft --continue
   $ hg graft -c
   grafting 28:cc20d29aec8d "28"
   $ cat a
   abc
 
 Continue testing same origin policy, using revision numbers from test above
 but do some destructive editing of the repo:
 
   $ hg up -qC 7
   $ hg tag -l -r 13 tmp
   $ hg --config extensions.strip= strip 2
   saved backup bundle to $TESTTMP/a/.hg/strip-backup/5c095ad7e90f-d323a1e4-backup.hg
   $ hg graft tmp
   skipping already grafted revision 8:7a4785234d87 (2:ef0ef43d49e7 also has unknown origin 5c095ad7e90f)
   [255]
 
 Empty graft
 
   $ hg up -qr 26
   $ hg tag -f something
   $ hg graft -qr 27
   $ hg graft -f 27
   grafting 27:17d42b8f5d50 "28"
   note: graft of 27:17d42b8f5d50 created no changes to commit
 
   $ cd ..
 
 Graft to duplicate a commit
 
   $ hg init graftsibling
   $ cd graftsibling
   $ touch a
   $ hg commit -qAm a
   $ touch b
   $ hg commit -qAm b
   $ hg log -G -T '{rev}\n'
   @  1
   |
   o  0
   
   $ hg up -q 0
   $ hg graft -r 1
   grafting 1:0e067c57feba "b" (tip)
   $ hg log -G -T '{rev}\n'
   @  2
   |
   | o  1
   |/
   o  0
   
 Graft to duplicate a commit twice
 
   $ hg up -q 0
   $ hg graft -r 2
   grafting 2:044ec77f6389 "b" (tip)
   $ hg log -G -T '{rev}\n'
   @  3
   |
   | o  2
   |/
   | o  1
   |/
   o  0
   
 Graft from behind a move or rename
 ==================================
 
 NOTE: This is affected by issue5343, and will need updating when it's fixed
 
 Consider this topology for a regular graft:
 
 o c1
 |
 | o c2
 | |
 | o ca # stands for "common ancestor"
 |/
 o cta # stands for "common topological ancestor"
 
 Note that in issue5343, ca==cta.
 
 The following table shows the possible cases. Here, "x->y" and, equivalently,
 "y<-x", where x is an ancestor of y, means that some copy happened from x to y.
 
 name | c1<-cta | cta<->ca | ca->c2
 A.0  |         |          |
 A.1  |    X    |          |
 A.2  |         |     X    |
 A.3  |         |          |   X
 A.4  |    X    |     X    |
 A.5  |    X    |          |   X
 A.6  |         |     X    |   X
 A.7  |    X    |     X    |   X
 
 A.0 is trivial, and doesn't need copy tracking.
 For A.1, a forward rename is recorded in the c1 pass, to be followed later.
 In A.2, the rename is recorded in the c2 pass and followed backwards.
 A.3 is recorded in the c2 pass as a forward rename to be duplicated on target.
 In A.4, both passes of checkcopies record incomplete renames, which are
 then joined in mergecopies to record a rename to be followed.
 In A.5 and A.7, the c1 pass records an incomplete rename, while the c2 pass
 records an incomplete divergence. The incomplete rename is then joined to the
 appropriate side of the incomplete divergence, and the result is recorded as a
 divergence. The code doesn't distinguish at all between these two cases, since
 the end result of them is the same: an incomplete divergence joined with an
 incomplete rename into a divergence.
 Finally, A.6 records a divergence entirely in the c2 pass.
 
 A.4 has a degenerate case a<-b<-a->a, where checkcopies isn't needed at all.
 A.5 has a special case a<-b<-b->a, which is treated like a<-b->a in a merge.
 A.5 has issue5343 as a special case.
 A.6 has a special case a<-a<-b->a. Here, checkcopies will find a spurious
 incomplete divergence, which is in fact complete. This is handled later in
 mergecopies.
 A.7 has 4 special cases: a<-b<-a->b (the "ping-pong" case), a<-b<-c->b,
 a<-b<-a->c and a<-b<-c->a. Of these, only the "ping-pong" case is interesting,
 the others are fairly trivial (a<-b<-c->b and a<-b<-a->c proceed like the base
 case, a<-b<-c->a is treated the same as a<-b<-b->a).
 
 f5a therefore tests the "ping-pong" rename case, where a file is renamed to the
 same name on both branches, then the rename is backed out on one branch, and
 the backout is grafted to the other branch. This creates a challenging rename
 sequence of a<-b<-a->b in the graft target, topological CA, graft CA and graft
 source, respectively. Since rename detection will run on the c1 side for such a
 sequence (as for technical reasons, we split the c1 and c2 sides not at the
 graft CA, but rather at the topological CA), it will pick up a false rename,
 and cause a spurious merge conflict. This false rename is always exactly the
 reverse of the true rename that would be detected on the c2 side, so we can
 correct for it by detecting this condition and reversing as necessary.
 
 First, set up the repository with commits to be grafted
 
   $ hg init ../graftmove
   $ cd ../graftmove
   $ echo c1a > f1a
   $ echo c2a > f2a
   $ echo c3a > f3a
   $ echo c4a > f4a
   $ echo c5a > f5a
   $ hg ci -qAm A0
   $ hg mv f1a f1b
   $ hg mv f3a f3b
   $ hg mv f5a f5b
   $ hg ci -qAm B0
   $ echo c1c > f1b
   $ hg mv f2a f2c
   $ hg mv f5b f5a
   $ echo c5c > f5a
   $ hg ci -qAm C0
   $ hg mv f3b f3d
   $ echo c4d > f4a
   $ hg ci -qAm D0
   $ hg log -G
   @  changeset:   3:b69f5839d2d9
   |  tag:         tip
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     D0
   |
   o  changeset:   2:f58c7e2b28fa
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     C0
   |
   o  changeset:   1:3d7bba921b5d
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     B0
   |
   o  changeset:   0:11f7a1b56675
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     A0
   
 
 Test the cases A.2 (f1x), A.3 (f2x) and a special case of A.6 (f5x) where the
 two renames actually converge to the same name (thus no actual divergence).
 
   $ hg up -q 'desc("A0")'
   $ HGEDITOR="echo C1 >" hg graft -r 'desc("C0")' --edit
   grafting 2:f58c7e2b28fa "C0"
   merging f1a and f1b to f1a
   merging f5a
   warning: can't find ancestor for 'f5a' copied from 'f5b'!
   $ hg status --change .
   M f1a
   M f5a
   A f2c
   R f2a
   $ hg cat f1a
   c1c
   $ hg cat f1b
   f1b: no such file in rev c9763722f9bd
   [1]
 
 Test the cases A.0 (f4x) and A.6 (f3x)
 
   $ HGEDITOR="echo D1 >" hg graft -r 'desc("D0")' --edit
   grafting 3:b69f5839d2d9 "D0"
   note: possible conflict - f3b was renamed multiple times to:
    f3a
    f3d
   warning: can't find ancestor for 'f3d' copied from 'f3b'!
 
 Set up the repository for some further tests
 
   $ hg up -q "min(desc("A0"))"
   $ hg mv f1a f1e
   $ echo c2e > f2a
   $ hg mv f3a f3e
   $ hg mv f4a f4e
   $ hg mv f5a f5b
   $ hg ci -qAm "E0"
   $ hg up -q "min(desc("A0"))"
   $ hg cp f1a f1f
   $ hg ci -qAm "F0"
   $ hg up -q "min(desc("A0"))"
   $ hg cp f1a f1g
   $ echo c1g > f1g
   $ hg ci -qAm "G0"
   $ hg log -G
   @  changeset:   8:ba67f08fb15a
   |  tag:         tip
   |  parent:      0:11f7a1b56675
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     G0
   |
   | o  changeset:   7:d376ab0d7fda
   |/   parent:      0:11f7a1b56675
   |    user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     F0
   |
   | o  changeset:   6:6bd1736cab86
   |/   parent:      0:11f7a1b56675
   |    user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     E0
   |
   | o  changeset:   5:560daee679da
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     D1
   | |
   | o  changeset:   4:c9763722f9bd
   |/   parent:      0:11f7a1b56675
   |    user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     C1
   |
   | o  changeset:   3:b69f5839d2d9
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     D0
   | |
   | o  changeset:   2:f58c7e2b28fa
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     C0
   | |
   | o  changeset:   1:3d7bba921b5d
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     B0
   |
   o  changeset:   0:11f7a1b56675
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     A0
   
 
 Test the cases A.4 (f1x), the "ping-pong" special case of A.7 (f5x),
 and A.3 with a local content change to be preserved (f2x).
 
   $ hg up -q "desc("E0")"
   $ HGEDITOR="echo C2 >" hg graft -r 'desc("C0")' --edit
   grafting 2:f58c7e2b28fa "C0"
   merging f1e and f1b to f1e
   merging f2a and f2c to f2c
 
 Test the cases A.1 (f4x) and A.7 (f3x).
 
   $ HGEDITOR="echo D2 >" hg graft -r 'desc("D0")' --edit
   grafting 3:b69f5839d2d9 "D0"
   note: possible conflict - f3b was renamed multiple times to:
    f3d
    f3e
   merging f4e and f4a to f4e
   warning: can't find ancestor for 'f3d' copied from 'f3b'!
 
   $ hg cat f2c
   c2e
 
 Test the case A.5 (move case, f1x).
 
   $ hg up -q "desc("C0")"
 BROKEN: Shouldn't get the warning about missing ancestor
   $ HGEDITOR="echo E1 >" hg graft -r 'desc("E0")' --edit
   grafting 6:6bd1736cab86 "E0"
   note: possible conflict - f1a was renamed multiple times to:
    f1b
    f1e
   note: possible conflict - f3a was renamed multiple times to:
    f3b
    f3e
   merging f2c and f2a to f2c
   merging f5a and f5b to f5b
   warning: can't find ancestor for 'f1e' copied from 'f1a'!
   warning: can't find ancestor for 'f3e' copied from 'f3a'!
   $ cat f1e
   c1a
 
 Test the case A.5 (copy case, f1x).
 
   $ hg up -q "desc("C0")"
 BROKEN: Shouldn't get the warning about missing ancestor
   $ HGEDITOR="echo F1 >" hg graft -r 'desc("F0")' --edit
   grafting 7:d376ab0d7fda "F0"
   warning: can't find ancestor for 'f1f' copied from 'f1a'!
 BROKEN: f1f should be marked a copy from f1b
   $ hg st --copies --change .
   A f1f
 BROKEN: f1f should have the new content from f1b (i.e. "c1c")
   $ cat f1f
   c1a
 
 Test the case A.5 (copy+modify case, f1x).
 
   $ hg up -q "desc("C0")"
 BROKEN: We should get a merge conflict from the 3-way merge between f1b in C0
 (content "c1c") and f1g in G0 (content "c1g") with f1a in A0 as base (content
 "c1a")
   $ HGEDITOR="echo G1 >" hg graft -r 'desc("G0")' --edit
   grafting 8:ba67f08fb15a "G0"
   warning: can't find ancestor for 'f1g' copied from 'f1a'!
 
 Check the results of the grafts tested
 
   $ hg log -CGv --patch --git
   @  changeset:   13:ef3adf6c20a4
   |  tag:         tip
   |  parent:      2:f58c7e2b28fa
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  files:       f1g
   |  description:
   |  G1
   |
   |
   |  diff --git a/f1g b/f1g
   |  new file mode 100644
   |  --- /dev/null
   |  +++ b/f1g
   |  @@ -0,0 +1,1 @@
   |  +c1g
   |
   | o  changeset:   12:b5542d755b54
   |/   parent:      2:f58c7e2b28fa
   |    user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    files:       f1f
   |    description:
   |    F1
   |
   |
   |    diff --git a/f1f b/f1f
   |    new file mode 100644
   |    --- /dev/null
   |    +++ b/f1f
   |    @@ -0,0 +1,1 @@
   |    +c1a
   |
   | o  changeset:   11:f8a162271246
   |/   parent:      2:f58c7e2b28fa
   |    user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    files:       f1e f2c f3e f4a f4e f5a f5b
   |    copies:      f4e (f4a) f5b (f5a)
   |    description:
   |    E1
   |
   |
   |    diff --git a/f1e b/f1e
   |    new file mode 100644
   |    --- /dev/null
   |    +++ b/f1e
   |    @@ -0,0 +1,1 @@
   |    +c1a
   |    diff --git a/f2c b/f2c
   |    --- a/f2c
   |    +++ b/f2c
   |    @@ -1,1 +1,1 @@
   |    -c2a
   |    +c2e
   |    diff --git a/f3e b/f3e
   |    new file mode 100644
   |    --- /dev/null
   |    +++ b/f3e
   |    @@ -0,0 +1,1 @@
   |    +c3a
   |    diff --git a/f4a b/f4e
   |    rename from f4a
   |    rename to f4e
   |    diff --git a/f5a b/f5b
   |    rename from f5a
   |    rename to f5b
   |
   | o  changeset:   10:93ee502e8b0a
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  files:       f3d f4e
   | |  description:
   | |  D2
   | |
   | |
   | |  diff --git a/f3d b/f3d
   | |  new file mode 100644
   | |  --- /dev/null
   | |  +++ b/f3d
   | |  @@ -0,0 +1,1 @@
   | |  +c3a
   | |  diff --git a/f4e b/f4e
   | |  --- a/f4e
   | |  +++ b/f4e
   | |  @@ -1,1 +1,1 @@
   | |  -c4a
   | |  +c4d
   | |
   | o  changeset:   9:539cf145f496
   | |  parent:      6:6bd1736cab86
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  files:       f1e f2a f2c f5a f5b
   | |  copies:      f2c (f2a) f5a (f5b)
   | |  description:
   | |  C2
   | |
   | |
   | |  diff --git a/f1e b/f1e
   | |  --- a/f1e
   | |  +++ b/f1e
   | |  @@ -1,1 +1,1 @@
   | |  -c1a
   | |  +c1c
   | |  diff --git a/f2a b/f2c
   | |  rename from f2a
   | |  rename to f2c
   | |  diff --git a/f5b b/f5a
   | |  rename from f5b
   | |  rename to f5a
   | |  --- a/f5b
   | |  +++ b/f5a
   | |  @@ -1,1 +1,1 @@
   | |  -c5a
   | |  +c5c
   | |
   | | o  changeset:   8:ba67f08fb15a
   | | |  parent:      0:11f7a1b56675
   | | |  user:        test
   | | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | | |  files:       f1g
   | | |  copies:      f1g (f1a)
   | | |  description:
   | | |  G0
   | | |
   | | |
   | | |  diff --git a/f1a b/f1g
   | | |  copy from f1a
   | | |  copy to f1g
   | | |  --- a/f1a
   | | |  +++ b/f1g
   | | |  @@ -1,1 +1,1 @@
   | | |  -c1a
   | | |  +c1g
   | | |
   | | | o  changeset:   7:d376ab0d7fda
   | | |/   parent:      0:11f7a1b56675
   | | |    user:        test
   | | |    date:        Thu Jan 01 00:00:00 1970 +0000
   | | |    files:       f1f
   | | |    copies:      f1f (f1a)
   | | |    description:
   | | |    F0
   | | |
   | | |
   | | |    diff --git a/f1a b/f1f
   | | |    copy from f1a
   | | |    copy to f1f
   | | |
   | o |  changeset:   6:6bd1736cab86
   | |/   parent:      0:11f7a1b56675
   | |    user:        test
   | |    date:        Thu Jan 01 00:00:00 1970 +0000
   | |    files:       f1a f1e f2a f3a f3e f4a f4e f5a f5b
   | |    copies:      f1e (f1a) f3e (f3a) f4e (f4a) f5b (f5a)
   | |    description:
   | |    E0
   | |
   | |
   | |    diff --git a/f1a b/f1e
   | |    rename from f1a
   | |    rename to f1e
   | |    diff --git a/f2a b/f2a
   | |    --- a/f2a
   | |    +++ b/f2a
   | |    @@ -1,1 +1,1 @@
   | |    -c2a
   | |    +c2e
   | |    diff --git a/f3a b/f3e
   | |    rename from f3a
   | |    rename to f3e
   | |    diff --git a/f4a b/f4e
   | |    rename from f4a
   | |    rename to f4e
   | |    diff --git a/f5a b/f5b
   | |    rename from f5a
   | |    rename to f5b
   | |
   | | o  changeset:   5:560daee679da
   | | |  user:        test
   | | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | | |  files:       f3d f4a
   | | |  description:
   | | |  D1
   | | |
   | | |
   | | |  diff --git a/f3d b/f3d
   | | |  new file mode 100644
   | | |  --- /dev/null
   | | |  +++ b/f3d
   | | |  @@ -0,0 +1,1 @@
   | | |  +c3a
   | | |  diff --git a/f4a b/f4a
   | | |  --- a/f4a
   | | |  +++ b/f4a
   | | |  @@ -1,1 +1,1 @@
   | | |  -c4a
   | | |  +c4d
   | | |
   | | o  changeset:   4:c9763722f9bd
   | |/   parent:      0:11f7a1b56675
   | |    user:        test
   | |    date:        Thu Jan 01 00:00:00 1970 +0000
   | |    files:       f1a f2a f2c f5a
   | |    copies:      f2c (f2a)
   | |    description:
   | |    C1
   | |
   | |
   | |    diff --git a/f1a b/f1a
   | |    --- a/f1a
   | |    +++ b/f1a
   | |    @@ -1,1 +1,1 @@
   | |    -c1a
   | |    +c1c
   | |    diff --git a/f2a b/f2c
   | |    rename from f2a
   | |    rename to f2c
   | |    diff --git a/f5a b/f5a
   | |    --- a/f5a
   | |    +++ b/f5a
   | |    @@ -1,1 +1,1 @@
   | |    -c5a
   | |    +c5c
   | |
   +---o  changeset:   3:b69f5839d2d9
   | |    user:        test
   | |    date:        Thu Jan 01 00:00:00 1970 +0000
   | |    files:       f3b f3d f4a
   | |    copies:      f3d (f3b)
   | |    description:
   | |    D0
   | |
   | |
   | |    diff --git a/f3b b/f3d
   | |    rename from f3b
   | |    rename to f3d
   | |    diff --git a/f4a b/f4a
   | |    --- a/f4a
   | |    +++ b/f4a
   | |    @@ -1,1 +1,1 @@
   | |    -c4a
   | |    +c4d
   | |
   o |  changeset:   2:f58c7e2b28fa
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  files:       f1b f2a f2c f5a f5b
   | |  copies:      f2c (f2a) f5a (f5b)
   | |  description:
   | |  C0
   | |
   | |
   | |  diff --git a/f1b b/f1b
   | |  --- a/f1b
   | |  +++ b/f1b
   | |  @@ -1,1 +1,1 @@
   | |  -c1a
   | |  +c1c
   | |  diff --git a/f2a b/f2c
   | |  rename from f2a
   | |  rename to f2c
   | |  diff --git a/f5b b/f5a
   | |  rename from f5b
   | |  rename to f5a
   | |  --- a/f5b
   | |  +++ b/f5a
   | |  @@ -1,1 +1,1 @@
   | |  -c5a
   | |  +c5c
   | |
   o |  changeset:   1:3d7bba921b5d
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    files:       f1a f1b f3a f3b f5a f5b
   |    copies:      f1b (f1a) f3b (f3a) f5b (f5a)
   |    description:
   |    B0
   |
   |
   |    diff --git a/f1a b/f1b
   |    rename from f1a
   |    rename to f1b
   |    diff --git a/f3a b/f3b
   |    rename from f3a
   |    rename to f3b
   |    diff --git a/f5a b/f5b
   |    rename from f5a
   |    rename to f5b
   |
   o  changeset:   0:11f7a1b56675
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      files:       f1a f2a f3a f4a f5a
      description:
      A0
   
   
      diff --git a/f1a b/f1a
      new file mode 100644
      --- /dev/null
      +++ b/f1a
      @@ -0,0 +1,1 @@
      +c1a
      diff --git a/f2a b/f2a
      new file mode 100644
      --- /dev/null
      +++ b/f2a
      @@ -0,0 +1,1 @@
      +c2a
      diff --git a/f3a b/f3a
      new file mode 100644
      --- /dev/null
      +++ b/f3a
      @@ -0,0 +1,1 @@
      +c3a
      diff --git a/f4a b/f4a
      new file mode 100644
      --- /dev/null
      +++ b/f4a
      @@ -0,0 +1,1 @@
      +c4a
      diff --git a/f5a b/f5a
      new file mode 100644
      --- /dev/null
      +++ b/f5a
      @@ -0,0 +1,1 @@
      +c5a
   
 Check superfluous filemerge of files renamed in the past but untouched by graft
 
   $ echo a > a
   $ hg ci -qAma
   $ hg mv a b
   $ echo b > b
   $ hg ci -qAmb
   $ echo c > c
   $ hg ci -qAmc
   $ hg up -q .~2
   $ hg graft tip -qt:fail
 
   $ cd ..
 
 Graft a change into a new file previously grafted into a renamed directory
 
   $ hg init dirmovenewfile
   $ cd dirmovenewfile
   $ mkdir a
   $ echo a > a/a
   $ hg ci -qAma
   $ echo x > a/x
   $ hg ci -qAmx
   $ hg up -q 0
   $ hg mv -q a b
   $ hg ci -qAmb
   $ hg graft -q 1 # a/x grafted as b/x, but no copy information recorded
   $ hg up -q 1
   $ echo y > a/x
   $ hg ci -qAmy
   $ hg up -q 3
   $ hg graft -q 4
   $ hg status --change .
   M b/x
 
 Prepare for test of skipped changesets and how merges can influence it:
 
   $ hg merge -q -r 1 --tool :local
   $ hg ci -m m
   $ echo xx >> b/x
   $ hg ci -m xx
 
   $ hg log -G -T '{rev} {desc|firstline}'
   @  7 xx
   |
   o    6 m
   |\
   | o  5 y
   | |
   +---o  4 y
   | |
   | o  3 x
   | |
   | o  2 b
   | |
   o |  1 x
   |/
   o  0 a
   
 Grafting of plain changes correctly detects that 3 and 5 should be skipped:
 
   $ hg up -qCr 4
   $ hg graft --tool :local -r 2::5
   skipping already grafted revision 3:ca093ca2f1d9 (was grafted from 1:13ec5badbf2a)
   skipping already grafted revision 5:43e9eb70dab0 (was grafted from 4:6c9a1289e5f1)
   grafting 2:42127f193bcd "b"
 
 Extending the graft range to include a (skipped) merge of 3 will not prevent us from
 also detecting that both 3 and 5 should be skipped:
 
   $ hg up -qCr 4
   $ hg graft --tool :local -r 2::7
   skipping ungraftable merge revision 6
   skipping already grafted revision 3:ca093ca2f1d9 (was grafted from 1:13ec5badbf2a)
   skipping already grafted revision 5:43e9eb70dab0 (was grafted from 4:6c9a1289e5f1)
   grafting 2:42127f193bcd "b"
   grafting 7:d3c3f2b38ecc "xx"
   note: graft of 7:d3c3f2b38ecc created no changes to commit
 
   $ cd ..
 
 Grafted revision should be warned and skipped only once. (issue6024)
 
   $ mkdir issue6024
   $ cd issue6024
 
   $ hg init base
   $ cd base
   $ touch x
   $ hg commit -qAminit
   $ echo a > x
   $ hg commit -mchange
   $ hg update -q 0
   $ hg graft -r 1
   grafting 1:a0b923c546aa "change" (tip)
   $ cd ..
 
   $ hg clone -qr 2 base clone
   $ cd clone
   $ hg pull -q
   $ hg merge -q 2
   $ hg commit -mmerge
   $ hg update -q 0
   $ hg graft -r 1
   grafting 1:04fc6d444368 "change"
   $ hg update -q 3
   $ hg log -G -T '{rev}:{node|shortest} <- {extras.source|shortest}\n'
   o  4:4e16 <- a0b9
   |
   | @    3:f0ac <-
   | |\
   +---o  2:a0b9 <-
   | |
   | o  1:04fc <- a0b9
   |/
   o  0:7848 <-
   
 
  the source of rev 4 is an ancestor of the working parent, and was also
  grafted as rev 1. it should be stripped from the target revisions only once.
 
   $ hg graft -r 4
   skipping already grafted revision 4:4e16bab40c9c (1:04fc6d444368 also has origin 2:a0b923c546aa)
   [255]
 
   $ cd ../..
 
 Testing the reading of old format graftstate file with newer mercurial
 
   $ hg init oldgraft
   $ cd oldgraft
   $ for ch in a b c; do echo foo > $ch; hg add $ch; hg ci -Aqm "added "$ch; done;
   $ hg log -GT "{rev}:{node|short} {desc}\n"
   @  2:8be98ac1a569 added c
   |
   o  1:80e6d2c47cfe added b
   |
   o  0:f7ad41964313 added a
   
   $ hg up 0
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo bar > b
   $ hg add b
   $ hg ci -m "bar to b"
   created new head
   $ hg graft -r 1 -r 2
   grafting 1:80e6d2c47cfe "added b"
   merging b
   warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
 Writing the nodes in old format to graftstate
 
   $ hg log -r 1 -r 2 -T '{node}\n' > .hg/graftstate
   $ echo foo > b
   $ hg resolve -m
   (no more unresolved files)
   continue: hg graft --continue
   $ hg graft --continue
   grafting 1:80e6d2c47cfe "added b"
   grafting 2:8be98ac1a569 "added c"
 
 Testing that --user is preserved during conflicts and value is reused while
 running `hg graft --continue`
 
   $ hg log -G
   @  changeset:   5:711e9fa999f1
   |  tag:         tip
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     added c
   |
   o  changeset:   4:e5ad7353b408
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     added b
   |
   o  changeset:   3:9e887f7a939c
   |  parent:      0:f7ad41964313
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     bar to b
   |
   | o  changeset:   2:8be98ac1a569
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     added c
   | |
   | o  changeset:   1:80e6d2c47cfe
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     added b
   |
   o  changeset:   0:f7ad41964313
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     added a
   
 
   $ hg up '.^^'
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
 
   $ hg graft -r 1 -r 2 --user batman
   grafting 1:80e6d2c47cfe "added b"
   merging b
   warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
   $ echo wat > b
   $ hg resolve -m
   (no more unresolved files)
   continue: hg graft --continue
 
   $ hg graft --continue
   grafting 1:80e6d2c47cfe "added b"
   grafting 2:8be98ac1a569 "added c"
 
   $ hg log -Gr 3::
   @  changeset:   7:11a36ffaacf2
   |  tag:         tip
   |  user:        batman
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     added c
   |
   o  changeset:   6:76803afc6511
   |  parent:      3:9e887f7a939c
   |  user:        batman
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     added b
   |
   | o  changeset:   5:711e9fa999f1
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     added c
   | |
   | o  changeset:   4:e5ad7353b408
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     added b
   |
   o  changeset:   3:9e887f7a939c
   |  parent:      0:f7ad41964313
   ~  user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     bar to b
   
 Test that --date is preserved and reused in `hg graft --continue`
 
   $ hg up '.^^'
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg graft -r 1 -r 2 --date '1234560000 120'
   grafting 1:80e6d2c47cfe "added b"
   merging b
   warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
   $ echo foobar > b
   $ hg resolve -m
   (no more unresolved files)
   continue: hg graft --continue
   $ hg graft --continue
   grafting 1:80e6d2c47cfe "added b"
   grafting 2:8be98ac1a569 "added c"
 
   $ hg log -Gr '.^^::.'
   @  changeset:   9:1896b76e007a
   |  tag:         tip
   |  user:        test
   |  date:        Fri Feb 13 21:18:00 2009 -0002
   |  summary:     added c
   |
   o  changeset:   8:ce2b4f1632af
   |  parent:      3:9e887f7a939c
   |  user:        test
   |  date:        Fri Feb 13 21:18:00 2009 -0002
   |  summary:     added b
   |
   o  changeset:   3:9e887f7a939c
   |  parent:      0:f7ad41964313
   ~  user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     bar to b
   
 Test that --log is preserved and reused in `hg graft --continue`
 
   $ hg up '.^^'
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg graft -r 1 -r 2 --log
   grafting 1:80e6d2c47cfe "added b"
   merging b
   warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
   $ echo foobar > b
   $ hg resolve -m
   (no more unresolved files)
   continue: hg graft --continue
 
   $ hg graft --continue
   grafting 1:80e6d2c47cfe "added b"
   grafting 2:8be98ac1a569 "added c"
 
   $ hg log -GT "{rev}:{node|short} {desc}" -r '.^^::.'
   @  11:30c1050a58b2 added c
   |  (grafted from 8be98ac1a56990c2d9ca6861041b8390af7bd6f3)
   o  10:ec7eda2313e2 added b
   |  (grafted from 80e6d2c47cfe5b3185519568327a17a061c7efb6)
   o  3:9e887f7a939c bar to b
   |
   ~
 
   $ cd ..
 
 Testing the --stop flag of `hg graft` which stops the interrupted graft
 
   $ hg init stopgraft
   $ cd stopgraft
   $ for ch in a b c d; do echo $ch > $ch; hg add $ch; hg ci -Aqm "added "$ch; done;
 
   $ hg log -G
   @  changeset:   3:9150fe93bec6
   |  tag:         tip
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     added d
   |
   o  changeset:   2:155349b645be
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     added c
   |
   o  changeset:   1:5f6d8a4bf34a
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     added b
   |
   o  changeset:   0:9092f1db7931
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     added a
   
   $ hg up '.^^'
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
 
   $ echo foo > d
   $ hg ci -Aqm "added foo to d"
 
   $ hg graft --stop
   abort: no interrupted graft found
   [255]
 
   $ hg graft -r 3
   grafting 3:9150fe93bec6 "added d"
   merging d
   warning: conflicts while merging d! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
   $ hg graft --stop --continue
   abort: cannot use '--continue' and '--stop' together
   [255]
 
   $ hg graft --stop -U
   abort: cannot specify any other flag with '--stop'
   [255]
   $ hg graft --stop --rev 4
   abort: cannot specify any other flag with '--stop'
   [255]
   $ hg graft --stop --log
   abort: cannot specify any other flag with '--stop'
   [255]
 
   $ hg graft --stop
   stopped the interrupted graft
   working directory is now at a0deacecd59d
 
   $ hg diff
 
   $ hg log -Gr '.'
   @  changeset:   4:a0deacecd59d
   |  tag:         tip
   ~  parent:      1:5f6d8a4bf34a
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     added foo to d
   
   $ hg graft -r 2 -r 3
   grafting 2:155349b645be "added c"
   grafting 3:9150fe93bec6 "added d"
   merging d
   warning: conflicts while merging d! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
   $ hg graft --stop
   stopped the interrupted graft
   working directory is now at 75b447541a9e
 
   $ hg diff
 
   $ hg log -G -T "{rev}:{node|short} {desc}"
   @  5:75b447541a9e added c
   |
   o  4:a0deacecd59d added foo to d
   |
   | o  3:9150fe93bec6 added d
   | |
   | o  2:155349b645be added c
   |/
   o  1:5f6d8a4bf34a added b
   |
   o  0:9092f1db7931 added a
   
   $ cd ..
 
 Testing the --abort flag for `hg graft` which aborts and rollback to state
 before the graft
 
   $ hg init abortgraft
   $ cd abortgraft
   $ for ch in a b c d; do echo $ch > $ch; hg add $ch; hg ci -Aqm "added "$ch; done;
 
   $ hg up '.^^'
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
 
   $ echo x > x
   $ hg ci -Aqm "added x"
   $ hg up '.^'
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo foo > c
   $ hg ci -Aqm "added foo to c"
 
   $ hg log -GT "{rev}:{node|short} {desc}"
   @  5:36b793615f78 added foo to c
   |
   | o  4:863a25e1a9ea added x
   |/
   | o  3:9150fe93bec6 added d
   | |
   | o  2:155349b645be added c
   |/
   o  1:5f6d8a4bf34a added b
   |
   o  0:9092f1db7931 added a
   
   $ hg up 9150fe93bec6
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ hg graft --abort
   abort: no interrupted graft to abort
   [255]
 
 when stripping is required
   $ hg graft -r 4 -r 5
   grafting 4:863a25e1a9ea "added x"
   grafting 5:36b793615f78 "added foo to c" (tip)
   merging c
   warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
   $ hg graft --continue --abort
   abort: cannot use '--continue' and '--abort' together
   [255]
 
   $ hg graft --abort --stop
   abort: cannot use '--abort' and '--stop' together
   [255]
 
   $ hg graft --abort --currentuser
   abort: cannot specify any other flag with '--abort'
   [255]
 
   $ hg graft --abort --edit
   abort: cannot specify any other flag with '--abort'
   [255]
 
   $ hg graft --abort
   graft aborted
   working directory is now at 9150fe93bec6
   $ hg log -GT "{rev}:{node|short} {desc}"
   o  5:36b793615f78 added foo to c
   |
   | o  4:863a25e1a9ea added x
   |/
   | @  3:9150fe93bec6 added d
   | |
   | o  2:155349b645be added c
   |/
   o  1:5f6d8a4bf34a added b
   |
   o  0:9092f1db7931 added a
   
 when stripping is not required
   $ hg graft -r 5
   grafting 5:36b793615f78 "added foo to c" (tip)
   merging c
   warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
   $ hg graft --abort
   graft aborted
   working directory is now at 9150fe93bec6
   $ hg log -GT "{rev}:{node|short} {desc}"
   o  5:36b793615f78 added foo to c
   |
   | o  4:863a25e1a9ea added x
   |/
   | @  3:9150fe93bec6 added d
   | |
   | o  2:155349b645be added c
   |/
   o  1:5f6d8a4bf34a added b
   |
   o  0:9092f1db7931 added a
   
 when some of the changesets became public
 
   $ hg graft -r 4 -r 5
   grafting 4:863a25e1a9ea "added x"
   grafting 5:36b793615f78 "added foo to c" (tip)
   merging c
   warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
   $ hg log -GT "{rev}:{node|short} {desc}"
   @  6:6ec71c037d94 added x
   |
   | o  5:36b793615f78 added foo to c
   | |
   | | o  4:863a25e1a9ea added x
   | |/
   o |  3:9150fe93bec6 added d
   | |
   o |  2:155349b645be added c
   |/
   o  1:5f6d8a4bf34a added b
   |
   o  0:9092f1db7931 added a
   
   $ hg phase -r 6 --public
 
   $ hg graft --abort
   cannot clean up public changesets 6ec71c037d94
   graft aborted
   working directory is now at 6ec71c037d94
 
 when we created new changesets on top of existing one
 
   $ hg up '.^^'
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo y > y
   $ hg ci -Aqm "added y"
   $ echo z > z
   $ hg ci -Aqm "added z"
 
   $ hg up 3
   1 files updated, 0 files merged, 3 files removed, 0 files unresolved
   $ hg log -GT "{rev}:{node|short} {desc}"
   o  8:637f9e9bbfd4 added z
   |
   o  7:123221671fd4 added y
   |
   | o  6:6ec71c037d94 added x
   | |
   | | o  5:36b793615f78 added foo to c
   | | |
   | | | o  4:863a25e1a9ea added x
   | | |/
   | @ |  3:9150fe93bec6 added d
   |/ /
   o /  2:155349b645be added c
   |/
   o  1:5f6d8a4bf34a added b
   |
   o  0:9092f1db7931 added a
   
   $ hg graft -r 8 -r 7 -r 5
   grafting 8:637f9e9bbfd4 "added z" (tip)
   grafting 7:123221671fd4 "added y"
   grafting 5:36b793615f78 "added foo to c"
   merging c
   warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
   $ cd ..
   $ hg init pullrepo
   $ cd pullrepo
   $ cat >> .hg/hgrc <<EOF
   > [phases]
   > publish=False
   > EOF
   $ hg pull ../abortgraft --config phases.publish=False
   pulling from ../abortgraft
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 11 changesets with 9 changes to 8 files (+4 heads)
   new changesets 9092f1db7931:6b98ff0062dd (6 drafts)
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg up 9
   5 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo w > w
   $ hg ci -Aqm "added w" --config phases.publish=False
 
   $ cd ../abortgraft
   $ hg pull ../pullrepo
   pulling from ../pullrepo
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
   new changesets 311dfc6cf3bf (1 drafts)
   (run 'hg heads .' to see heads, 'hg merge' to merge)
 
   $ hg graft --abort
   new changesets detected on destination branch, can't strip
   graft aborted
   working directory is now at 6b98ff0062dd
 
   $ cd ..
 
 ============================
 Testing --no-commit option:|
 ============================
 
   $ hg init nocommit
   $ cd nocommit
   $ echo a > a
   $ hg ci -qAma
   $ echo b > b
   $ hg ci -qAmb
   $ hg up -q 0
   $ echo c > c
   $ hg ci -qAmc
   $ hg log -GT "{rev}:{node|short} {desc}\n"
   @  2:d36c0562f908 c
   |
   | o  1:d2ae7f538514 b
   |/
   o  0:cb9a9f314b8b a
   
 
 Check reporting when --no-commit used with non-applicable options:
 
   $ hg graft 1 --no-commit -e
   abort: cannot specify --no-commit and --edit together
   [255]
 
   $ hg graft 1 --no-commit --log
   abort: cannot specify --no-commit and --log together
   [255]
 
   $ hg graft 1 --no-commit -D
   abort: cannot specify --no-commit and --currentdate together
   [255]
 
 Test --no-commit is working:
   $ hg graft 1 --no-commit
   grafting 1:d2ae7f538514 "b"
 
   $ hg log -GT "{rev}:{node|short} {desc}\n"
   @  2:d36c0562f908 c
   |
   | o  1:d2ae7f538514 b
   |/
   o  0:cb9a9f314b8b a
   
 
   $ hg diff
   diff -r d36c0562f908 b
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/b	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +b
 
 Prepare wrdir to check --no-commit is resepected after --continue:
 
   $ hg up -qC
   $ echo A>a
   $ hg ci -qm "A in file a"
   $ hg up -q 1
   $ echo B>a
   $ hg ci -qm "B in file a"
   $ hg log -GT "{rev}:{node|short} {desc}\n"
   @  4:2aa9ad1006ff B in file a
   |
   | o  3:09e253b87e17 A in file a
   | |
   | o  2:d36c0562f908 c
   | |
   o |  1:d2ae7f538514 b
   |/
   o  0:cb9a9f314b8b a
   
 
   $ hg graft 3 --no-commit
   grafting 3:09e253b87e17 "A in file a"
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
 Resolve conflict:
   $ echo A>a
   $ hg resolve --mark
   (no more unresolved files)
   continue: hg graft --continue
 
   $ hg graft --continue
   grafting 3:09e253b87e17 "A in file a"
   $ hg log -GT "{rev}:{node|short} {desc}\n"
   @  4:2aa9ad1006ff B in file a
   |
   | o  3:09e253b87e17 A in file a
   | |
   | o  2:d36c0562f908 c
   | |
   o |  1:d2ae7f538514 b
   |/
   o  0:cb9a9f314b8b a
   
   $ hg diff
   diff -r 2aa9ad1006ff a
   --- a/a	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -B
   +A
 
   $ hg up -qC
 
 Check --no-commit is resepected when passed with --continue:
 
   $ hg graft 3
   grafting 3:09e253b87e17 "A in file a"
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
 Resolve conflict:
   $ echo A>a
   $ hg resolve --mark
   (no more unresolved files)
   continue: hg graft --continue
 
   $ hg graft --continue --no-commit
   grafting 3:09e253b87e17 "A in file a"
   $ hg diff
   diff -r 2aa9ad1006ff a
   --- a/a	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -B
   +A
 
   $ hg log -GT "{rev}:{node|short} {desc}\n"
   @  4:2aa9ad1006ff B in file a
   |
   | o  3:09e253b87e17 A in file a
   | |
   | o  2:d36c0562f908 c
   | |
   o |  1:d2ae7f538514 b
   |/
   o  0:cb9a9f314b8b a
   
   $ hg up -qC
 
 Test --no-commit when graft multiple revisions:
 When there is conflict:
   $ hg graft -r "2::3" --no-commit
   grafting 2:d36c0562f908 "c"
   grafting 3:09e253b87e17 "A in file a"
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   abort: unresolved conflicts, can't continue
   (use 'hg resolve' and 'hg graft --continue')
   [255]
 
   $ echo A>a
   $ hg resolve --mark
   (no more unresolved files)
   continue: hg graft --continue
   $ hg graft --continue
   grafting 3:09e253b87e17 "A in file a"
   $ hg diff
   diff -r 2aa9ad1006ff a
   --- a/a	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -B
   +A
   diff -r 2aa9ad1006ff c
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/c	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +c
 
   $ hg log -GT "{rev}:{node|short} {desc}\n"
   @  4:2aa9ad1006ff B in file a
   |
   | o  3:09e253b87e17 A in file a
   | |
   | o  2:d36c0562f908 c
   | |
   o |  1:d2ae7f538514 b
   |/
   o  0:cb9a9f314b8b a
   
   $ hg up -qC
 
 When there is no conflict:
   $ echo d>d
   $ hg add d -q
   $ hg ci -qmd
   $ hg up 3 -q
   $ hg log -GT "{rev}:{node|short} {desc}\n"
   o  5:baefa8927fc0 d
   |
   o  4:2aa9ad1006ff B in file a
   |
   | @  3:09e253b87e17 A in file a
   | |
   | o  2:d36c0562f908 c
   | |
   o |  1:d2ae7f538514 b
   |/
   o  0:cb9a9f314b8b a
   
 
   $ hg graft -r 1 -r 5 --no-commit
   grafting 1:d2ae7f538514 "b"
   grafting 5:baefa8927fc0 "d" (tip)
   $ hg diff
   diff -r 09e253b87e17 b
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/b	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +b
   diff -r 09e253b87e17 d
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/d	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +d
   $ hg log -GT "{rev}:{node|short} {desc}\n"
   o  5:baefa8927fc0 d
   |
   o  4:2aa9ad1006ff B in file a
   |
   | @  3:09e253b87e17 A in file a
   | |
   | o  2:d36c0562f908 c
   | |
   o |  1:d2ae7f538514 b
   |/
   o  0:cb9a9f314b8b a
   
   $ cd ..

tests/test-merge-no-file-change.t

@@ -1,379 +1,379
   $ cat <<'EOF' >> "$HGRCPATH"
   > [extensions]
   > convert =
   > [templates]
   > l = '{rev}:{node|short} p={p1rev},{p2rev} m={manifest} f={files|json}'
   > EOF
 
   $ check_convert_identity () {
   >     hg convert -q "$1" "$1.converted"
   >     hg outgoing -q -R "$1.converted" "$1"
   >     if [ "$?" != 1 ]; then
   >         echo '*** BUG: hash changes on convert ***'
   >         hg log -R "$1.converted" -GTl
   >     fi
   > }
 
 Files added at both parents:
 
   $ hg init added-both
   $ cd added-both
   $ touch a b c
   $ hg ci -qAm0 a
   $ hg ci -qAm1 b
   $ hg up -q 0
   $ hg ci -qAm2 c
 
   $ hg merge
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci --debug -m merge
   committing files:
   b
   not reusing manifest (no file change in changelog, but manifest differs)
   committing manifest
   committing changelog
   updating the branch cache
   committed changeset 3:7aa8a293f5d97377037afc21e871e036e718d659
   $ hg log -GTl
   @    3:7aa8a293f5d9 p=2,1 m=3:8667461869a1 f=[]
   |\
   | o  2:e0ea47086fce p=0,-1 m=2:b2e5b07f9374 f=["c"]
   | |
   o |  1:64d01526d4c2 p=0,-1 m=1:686dbf0aeca4 f=["b"]
   |/
   o  0:487a0a245cea p=-1,-1 m=0:8515d4bfda76 f=["a"]
   
 
   $ cd ..
   $ check_convert_identity added-both
 
 Files added at both parents, but the other removed at the merge:
 (In this case, ctx.files() after the commit contains the removed file "b", but
 its manifest does not differ from p1.)
 
   $ hg init added-both-removed-at-merge
   $ cd added-both-removed-at-merge
   $ touch a b c
   $ hg ci -qAm0 a
   $ hg ci -qAm1 b
   $ hg up -q 0
   $ hg ci -qAm2 c
 
   $ hg merge
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg rm -f b
   $ hg ci --debug -m merge
   committing files:
   committing manifest
   committing changelog
   updating the branch cache
   committed changeset 3:915745f3ca3d9d699925269474c2d0a9526e8dfa
   $ hg log -GTl
   @    3:915745f3ca3d p=2,1 m=3:8e9cf3456921 f=["b"]
   |\
   | o  2:e0ea47086fce p=0,-1 m=2:b2e5b07f9374 f=["c"]
   | |
   o |  1:64d01526d4c2 p=0,-1 m=1:686dbf0aeca4 f=["b"]
   |/
   o  0:487a0a245cea p=-1,-1 m=0:8515d4bfda76 f=["a"]
   
 
   $ cd ..
   $ check_convert_identity added-both
 
 An identical file added at both parents:
 
   $ hg init added-identical
   $ cd added-identical
   $ touch a b
   $ hg ci -qAm0 a
   $ hg ci -qAm1 b
   $ hg up -q 0
   $ touch b
   $ hg ci -qAm2 b
 
   $ hg merge
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci --debug -m merge
   reusing manifest from p1 (no file change)
   committing changelog
   updating the branch cache
   committed changeset 3:de26182cd210f0c3fb175ca7616704ab963d3024
   $ hg log -GTl
   @    3:de26182cd210 p=2,1 m=1:686dbf0aeca4 f=[]
   |\
   | o  2:f00991f11eca p=0,-1 m=1:686dbf0aeca4 f=["b"]
   | |
   o |  1:64d01526d4c2 p=0,-1 m=1:686dbf0aeca4 f=["b"]
   |/
   o  0:487a0a245cea p=-1,-1 m=0:8515d4bfda76 f=["a"]
   
 
   $ cd ..
   $ check_convert_identity added-identical
 
 #if execbit
 
 An identical file added at both parents, but the flag differs. Take local:
 
   $ hg init flag-change-take-p1
   $ cd flag-change-take-p1
   $ touch a b
   $ hg ci -qAm0 a
   $ hg ci -qAm1 b
   $ hg up -q 0
   $ touch b
   $ chmod +x b
   $ hg ci -qAm2 b
 
   $ hg merge
   warning: cannot merge flags for b without common ancestor - keeping local flags
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ chmod +x b
   $ hg ci --debug -m merge
   committing files:
   b
-  reusing manifest form p1 (listed files actually unchanged)
+  reusing manifest from p1 (listed files actually unchanged)
   committing changelog
   updating the branch cache
   committed changeset 3:c8d50407916ef8a5a97cb6e36ca9bc844a6ee13e
   $ hg log -GTl
   @    3:c8d50407916e p=2,1 m=2:36b69ba4b24b f=[]
   |\
   | o  2:99451f16b3f5 p=0,-1 m=2:36b69ba4b24b f=["b"]
   | |
   o |  1:64d01526d4c2 p=0,-1 m=1:686dbf0aeca4 f=["b"]
   |/
   o  0:487a0a245cea p=-1,-1 m=0:8515d4bfda76 f=["a"]
   
   $ hg files -vr3
            0   a
            0 x b
 
   $ cd ..
   $ check_convert_identity flag-change-take-p1
 
 An identical file added at both parents, but the flag differs. Take other:
 
   $ hg init flag-change-take-p2
   $ cd flag-change-take-p2
   $ touch a b
   $ hg ci -qAm0 a
   $ hg ci -qAm1 b
   $ hg up -q 0
   $ touch b
   $ chmod +x b
   $ hg ci -qAm2 b
 
   $ hg merge
   warning: cannot merge flags for b without common ancestor - keeping local flags
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ chmod -x b
   $ hg ci --debug -m merge
   committing files:
   b
   committing manifest
   committing changelog
   updating the branch cache
   committed changeset 3:06a62a687d87c7d8944743dee1ee9d8c66b3f6e3
   $ hg log -GTl
   @    3:06a62a687d87 p=2,1 m=3:2a315ba1aa45 f=["b"]
   |\
   | o  2:99451f16b3f5 p=0,-1 m=2:36b69ba4b24b f=["b"]
   | |
   o |  1:64d01526d4c2 p=0,-1 m=1:686dbf0aeca4 f=["b"]
   |/
   o  0:487a0a245cea p=-1,-1 m=0:8515d4bfda76 f=["a"]
   
   $ hg files -vr3
            0   a
            0   b
 
   $ cd ..
   $ check_convert_identity flag-change-take-p2
 
 #endif
 
 An identical file added at both parents, one more file added at p2:
 
   $ hg init added-some-p2
   $ cd added-some-p2
   $ touch a b c
   $ hg ci -qAm0 a
   $ hg ci -qAm1 b
   $ hg ci -qAm2 c
   $ hg up -q 0
   $ touch b
   $ hg ci -qAm3 b
 
   $ hg merge
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci --debug -m merge
   committing files:
   c
   not reusing manifest (no file change in changelog, but manifest differs)
   committing manifest
   committing changelog
   updating the branch cache
   committed changeset 4:f7fbc4e4d9a8fde03ba475adad675578c8bf472d
   $ hg log -GTl
   @    4:f7fbc4e4d9a8 p=3,2 m=3:92acd5bfd716 f=[]
   |\
   | o  3:e9d9f3cc981f p=0,-1 m=1:686dbf0aeca4 f=["b"]
   | |
   o |  2:93c5529a4ec7 p=1,-1 m=2:ae25a31b30b3 f=["c"]
   | |
   o |  1:64d01526d4c2 p=0,-1 m=1:686dbf0aeca4 f=["b"]
   |/
   o  0:487a0a245cea p=-1,-1 m=0:8515d4bfda76 f=["a"]
   
 
   $ cd ..
   $ check_convert_identity added-some-p2
 
 An identical file added at both parents, one more file added at p1:
 (In this case, p1 manifest is reused at the merge commit, which means the
 manifest DAG does not have the same shape as the changelog.)
 
   $ hg init added-some-p1
   $ cd added-some-p1
   $ touch a b
   $ hg ci -qAm0 a
   $ hg ci -qAm1 b
   $ hg up -q 0
   $ touch b c
   $ hg ci -qAm2 b
   $ hg ci -qAm3 c
 
   $ hg merge
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci --debug -m merge
   reusing manifest from p1 (no file change)
   committing changelog
   updating the branch cache
   committed changeset 4:a9f0f589a913f5a149dc10dfbd5af726977c36c4
   $ hg log -GTl
   @    4:a9f0f589a913 p=3,1 m=2:ae25a31b30b3 f=[]
   |\
   | o  3:b8dc385241b5 p=2,-1 m=2:ae25a31b30b3 f=["c"]
   | |
   | o  2:f00991f11eca p=0,-1 m=1:686dbf0aeca4 f=["b"]
   | |
   o |  1:64d01526d4c2 p=0,-1 m=1:686dbf0aeca4 f=["b"]
   |/
   o  0:487a0a245cea p=-1,-1 m=0:8515d4bfda76 f=["a"]
   
 
   $ cd ..
   $ check_convert_identity added-some-p1
 
 A file added at p2, a named branch created at p1:
 
   $ hg init named-branch-p1
   $ cd named-branch-p1
   $ touch a b
   $ hg ci -qAm0 a
   $ hg ci -qAm1 b
   $ hg up -q 0
   $ hg branch -q foo
   $ hg ci -m2
 
   $ hg merge default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci --debug -m merge
   committing files:
   b
   not reusing manifest (no file change in changelog, but manifest differs)
   committing manifest
   committing changelog
   updating the branch cache
   committed changeset 3:fb97d83b02fd072295cfc2171f21b7d38509bfd7
   $ hg log -GT'{l} branch={branch}'
   @    3:fb97d83b02fd p=2,1 m=2:9091c64f4ea1 f=[] branch=foo
   |\
   | o  2:a3a9fa6587e5 p=0,-1 m=0:8515d4bfda76 f=[] branch=foo
   | |
   o |  1:64d01526d4c2 p=0,-1 m=1:686dbf0aeca4 f=["b"] branch=default
   |/
   o  0:487a0a245cea p=-1,-1 m=0:8515d4bfda76 f=["a"] branch=default
   
 
   $ cd ..
   $ check_convert_identity named-branch-p1
 
 A file added at p1, a named branch created at p2:
 (In this case, p1 manifest is reused at the merge commit, which means the
 manifest DAG does not have the same shape as the changelog.)
 
   $ hg init named-branch-p2
   $ cd named-branch-p2
   $ touch a b
   $ hg ci -qAm0 a
   $ hg branch -q foo
   $ hg ci -m1
   $ hg up -q 0
   $ hg ci -qAm1 b
 
   $ hg merge foo
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci --debug -m merge
   reusing manifest from p1 (no file change)
   committing changelog
   updating the branch cache
   committed changeset 3:036823e24692218324d4af43b07ff89f8a000096
   $ hg log -GT'{l} branch={branch}'
   @    3:036823e24692 p=2,1 m=1:686dbf0aeca4 f=[] branch=default
   |\
   | o  2:64d01526d4c2 p=0,-1 m=1:686dbf0aeca4 f=["b"] branch=default
   | |
   o |  1:da38c8e00727 p=0,-1 m=0:8515d4bfda76 f=[] branch=foo
   |/
   o  0:487a0a245cea p=-1,-1 m=0:8515d4bfda76 f=["a"] branch=default
   
 
   $ cd ..
   $ check_convert_identity named-branch-p2
 
 A file changed once at both parents, but amended to have identical content:
 
   $ hg init amend-p1
   $ cd amend-p1
   $ touch a
   $ hg ci -qAm0 a
   $ echo foo > a
   $ hg ci -m1
   $ hg up -q 0
   $ echo bar > a
   $ hg ci -qm2
   $ echo foo > a
   $ hg ci -qm3 --amend
 
   $ hg merge
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci --debug -m merge
   reusing manifest from p1 (no file change)
   committing changelog
   updating the branch cache
   committed changeset 3:314e5bc5adf5c58ea571efabe33eedba20a201aa
   $ hg log -GT'{l} branch={branch}'
   @    3:314e5bc5adf5 p=2,1 m=1:d33ea248bd73 f=[] branch=default
   |\
   | o  2:de9c64f226a3 p=0,-1 m=1:d33ea248bd73 f=["a"] branch=default
   | |
   o |  1:6a74aec01b3c p=0,-1 m=1:d33ea248bd73 f=["a"] branch=default
   |/
   o  0:487a0a245cea p=-1,-1 m=0:8515d4bfda76 f=["a"] branch=default
   
 
   $ cd ..
   $ check_convert_identity amend-p1