view mercurial/configitems.py @ 43913:4b7d5d10c45d

exchange: ensure all outgoing subrepo references are present before pushing

We've run into occasional problems with people committing a repo, and then
amending or rebasing in the subrepo.  That makes it so that the revision in the
parent can't be checked out, and the problem gets propagated on push.  Mercurial
already tries to defend against this sort of dangling reference by pushing *all*
subrepo revisions first.  This reuses the checks that trigger warnings in
`hg verify` to bail on the push unless using `--force`.

I thought about putting this on the server side, but at that point, all of the
data has been transferred, only to bail out.  Additionally, SCM Manager hosts
subrepos in a location that isn't nested in the parent, so normal subrepo code
would complain that the subrepo is missing when run on the server.

Because the push command pushes subrepos before calling this exchange code, a
subrepo will be pushed before the parent is verified.  Not great, but no
dangling references are exchanged, so it solves the problem.  This code isn't in
the loop that pushes the subrepos because:

  1) the list of outgoing revisions is needed to limit the scope of the check
  2) the loop only accesses the current revision, and therefore can miss
     subrepos that were dropped in previous commits
  3) this code is called when pushing a subrepo, so the protection is recursive

I'm not sure if there's a cheap check for the list of files in the outgoing
bundle.  If there is, that would provide a fast path to bypass this check for
people not using subrepos (or if no subrepo changes were made).  There's
probably also room for verifying other references like tags.  But since that
doesn't break checkouts, it's much less of a problem.

Differential Revision: https://phab.mercurial-scm.org/D7616

# configitems.py - centralized declaration of configuration option
#
#  Copyright 2017 Pierre-Yves David <[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 functools
import re

from . import (
    encoding,
    error,
)


def loadconfigtable(ui, extname, configtable):
    """update config item known to the ui with the extension ones"""
    for section, items in sorted(configtable.items()):
        knownitems = ui._knownconfig.setdefault(section, itemregister())
        knownkeys = set(knownitems)
        newkeys = set(items)
        for key in sorted(knownkeys & newkeys):
            msg = b"extension '%s' overwrite config item '%s.%s'"
            msg %= (extname, section, key)
            ui.develwarn(msg, config=b'warn-config')

        knownitems.update(items)


class configitem(object):
    """represent a known config item

    :section: the official config section where to find this item,
       :name: the official name within the section,
    :default: default value for this item,
    :alias: optional list of tuples as alternatives,
    :generic: this is a generic definition, match name using regular expression.
    """

    def __init__(
        self,
        section,
        name,
        default=None,
        alias=(),
        generic=False,
        priority=0,
        experimental=False,
    ):
        self.section = section
        self.name = name
        self.default = default
        self.alias = list(alias)
        self.generic = generic
        self.priority = priority
        self.experimental = experimental
        self._re = None
        if generic:
            self._re = re.compile(self.name)


class itemregister(dict):
    """A specialized dictionary that can handle wild-card selection"""

    def __init__(self):
        super(itemregister, self).__init__()
        self._generics = set()

    def update(self, other):
        super(itemregister, self).update(other)
        self._generics.update(other._generics)

    def __setitem__(self, key, item):
        super(itemregister, self).__setitem__(key, item)
        if item.generic:
            self._generics.add(item)

    def get(self, key):
        baseitem = super(itemregister, self).get(key)
        if baseitem is not None and not baseitem.generic:
            return baseitem

        # search for a matching generic item
        generics = sorted(self._generics, key=(lambda x: (x.priority, x.name)))
        for item in generics:
            # we use 'match' instead of 'search' to make the matching simpler
            # for people unfamiliar with regular expression. Having the match
            # rooted to the start of the string will produce less surprising
            # result for user writing simple regex for sub-attribute.
            #
            # For example using "color\..*" match produces an unsurprising
            # result, while using search could suddenly match apparently
            # unrelated configuration that happens to contains "color."
            # anywhere. This is a tradeoff where we favor requiring ".*" on
            # some match to avoid the need to prefix most pattern with "^".
            # The "^" seems more error prone.
            if item._re.match(key):
                return item

        return None


coreitems = {}


def _register(configtable, *args, **kwargs):
    item = configitem(*args, **kwargs)
    section = configtable.setdefault(item.section, itemregister())
    if item.name in section:
        msg = b"duplicated config item registration for '%s.%s'"
        raise error.ProgrammingError(msg % (item.section, item.name))
    section[item.name] = item


# special value for case where the default is derived from other values
dynamicdefault = object()

# Registering actual config items


def getitemregister(configtable):
    f = functools.partial(_register, configtable)
    # export pseudo enum as configitem.*
    f.dynamicdefault = dynamicdefault
    return f


coreconfigitem = getitemregister(coreitems)


def _registerdiffopts(section, configprefix=b''):
    coreconfigitem(
        section, configprefix + b'nodates', default=False,
    )
    coreconfigitem(
        section, configprefix + b'showfunc', default=False,
    )
    coreconfigitem(
        section, configprefix + b'unified', default=None,
    )
    coreconfigitem(
        section, configprefix + b'git', default=False,
    )
    coreconfigitem(
        section, configprefix + b'ignorews', default=False,
    )
    coreconfigitem(
        section, configprefix + b'ignorewsamount', default=False,
    )
    coreconfigitem(
        section, configprefix + b'ignoreblanklines', default=False,
    )
    coreconfigitem(
        section, configprefix + b'ignorewseol', default=False,
    )
    coreconfigitem(
        section, configprefix + b'nobinary', default=False,
    )
    coreconfigitem(
        section, configprefix + b'noprefix', default=False,
    )
    coreconfigitem(
        section, configprefix + b'word-diff', default=False,
    )


coreconfigitem(
    b'alias', b'.*', default=dynamicdefault, generic=True,
)
coreconfigitem(
    b'auth', b'cookiefile', default=None,
)
_registerdiffopts(section=b'annotate')
# bookmarks.pushing: internal hack for discovery
coreconfigitem(
    b'bookmarks', b'pushing', default=list,
)
# bundle.mainreporoot: internal hack for bundlerepo
coreconfigitem(
    b'bundle', b'mainreporoot', default=b'',
)
coreconfigitem(
    b'censor', b'policy', default=b'abort', experimental=True,
)
coreconfigitem(
    b'chgserver', b'idletimeout', default=3600,
)
coreconfigitem(
    b'chgserver', b'skiphash', default=False,
)
coreconfigitem(
    b'cmdserver', b'log', default=None,
)
coreconfigitem(
    b'cmdserver', b'max-log-files', default=7,
)
coreconfigitem(
    b'cmdserver', b'max-log-size', default=b'1 MB',
)
coreconfigitem(
    b'cmdserver', b'max-repo-cache', default=0, experimental=True,
)
coreconfigitem(
    b'cmdserver', b'message-encodings', default=list, experimental=True,
)
coreconfigitem(
    b'cmdserver',
    b'track-log',
    default=lambda: [b'chgserver', b'cmdserver', b'repocache'],
)
coreconfigitem(
    b'color', b'.*', default=None, generic=True,
)
coreconfigitem(
    b'color', b'mode', default=b'auto',
)
coreconfigitem(
    b'color', b'pagermode', default=dynamicdefault,
)
_registerdiffopts(section=b'commands', configprefix=b'commit.interactive.')
coreconfigitem(
    b'commands', b'commit.post-status', default=False,
)
coreconfigitem(
    b'commands', b'grep.all-files', default=False, experimental=True,
)
coreconfigitem(
    b'commands', b'merge.require-rev', default=False,
)
coreconfigitem(
    b'commands', b'push.require-revs', default=False,
)
coreconfigitem(
    b'commands', b'resolve.confirm', default=False,
)
coreconfigitem(
    b'commands', b'resolve.explicit-re-merge', default=False,
)
coreconfigitem(
    b'commands', b'resolve.mark-check', default=b'none',
)
_registerdiffopts(section=b'commands', configprefix=b'revert.interactive.')
coreconfigitem(
    b'commands', b'show.aliasprefix', default=list,
)
coreconfigitem(
    b'commands', b'status.relative', default=False,
)
coreconfigitem(
    b'commands', b'status.skipstates', default=[], experimental=True,
)
coreconfigitem(
    b'commands', b'status.terse', default=b'',
)
coreconfigitem(
    b'commands', b'status.verbose', default=False,
)
coreconfigitem(
    b'commands', b'update.check', default=None,
)
coreconfigitem(
    b'commands', b'update.requiredest', default=False,
)
coreconfigitem(
    b'committemplate', b'.*', default=None, generic=True,
)
coreconfigitem(
    b'convert', b'bzr.saverev', default=True,
)
coreconfigitem(
    b'convert', b'cvsps.cache', default=True,
)
coreconfigitem(
    b'convert', b'cvsps.fuzz', default=60,
)
coreconfigitem(
    b'convert', b'cvsps.logencoding', default=None,
)
coreconfigitem(
    b'convert', b'cvsps.mergefrom', default=None,
)
coreconfigitem(
    b'convert', b'cvsps.mergeto', default=None,
)
coreconfigitem(
    b'convert', b'git.committeractions', default=lambda: [b'messagedifferent'],
)
coreconfigitem(
    b'convert', b'git.extrakeys', default=list,
)
coreconfigitem(
    b'convert', b'git.findcopiesharder', default=False,
)
coreconfigitem(
    b'convert', b'git.remoteprefix', default=b'remote',
)
coreconfigitem(
    b'convert', b'git.renamelimit', default=400,
)
coreconfigitem(
    b'convert', b'git.saverev', default=True,
)
coreconfigitem(
    b'convert', b'git.similarity', default=50,
)
coreconfigitem(
    b'convert', b'git.skipsubmodules', default=False,
)
coreconfigitem(
    b'convert', b'hg.clonebranches', default=False,
)
coreconfigitem(
    b'convert', b'hg.ignoreerrors', default=False,
)
coreconfigitem(
    b'convert', b'hg.preserve-hash', default=False,
)
coreconfigitem(
    b'convert', b'hg.revs', default=None,
)
coreconfigitem(
    b'convert', b'hg.saverev', default=False,
)
coreconfigitem(
    b'convert', b'hg.sourcename', default=None,
)
coreconfigitem(
    b'convert', b'hg.startrev', default=None,
)
coreconfigitem(
    b'convert', b'hg.tagsbranch', default=b'default',
)
coreconfigitem(
    b'convert', b'hg.usebranchnames', default=True,
)
coreconfigitem(
    b'convert', b'ignoreancestorcheck', default=False, experimental=True,
)
coreconfigitem(
    b'convert', b'localtimezone', default=False,
)
coreconfigitem(
    b'convert', b'p4.encoding', default=dynamicdefault,
)
coreconfigitem(
    b'convert', b'p4.startrev', default=0,
)
coreconfigitem(
    b'convert', b'skiptags', default=False,
)
coreconfigitem(
    b'convert', b'svn.debugsvnlog', default=True,
)
coreconfigitem(
    b'convert', b'svn.trunk', default=None,
)
coreconfigitem(
    b'convert', b'svn.tags', default=None,
)
coreconfigitem(
    b'convert', b'svn.branches', default=None,
)
coreconfigitem(
    b'convert', b'svn.startrev', default=0,
)
coreconfigitem(
    b'debug', b'dirstate.delaywrite', default=0,
)
coreconfigitem(
    b'defaults', b'.*', default=None, generic=True,
)
coreconfigitem(
    b'devel', b'all-warnings', default=False,
)
coreconfigitem(
    b'devel', b'bundle2.debug', default=False,
)
coreconfigitem(
    b'devel', b'bundle.delta', default=b'',
)
coreconfigitem(
    b'devel', b'cache-vfs', default=None,
)
coreconfigitem(
    b'devel', b'check-locks', default=False,
)
coreconfigitem(
    b'devel', b'check-relroot', default=False,
)
coreconfigitem(
    b'devel', b'default-date', default=None,
)
coreconfigitem(
    b'devel', b'deprec-warn', default=False,
)
coreconfigitem(
    b'devel', b'disableloaddefaultcerts', default=False,
)
coreconfigitem(
    b'devel', b'warn-empty-changegroup', default=False,
)
coreconfigitem(
    b'devel', b'legacy.exchange', default=list,
)
coreconfigitem(
    b'devel', b'servercafile', default=b'',
)
coreconfigitem(
    b'devel', b'serverexactprotocol', default=b'',
)
coreconfigitem(
    b'devel', b'serverrequirecert', default=False,
)
coreconfigitem(
    b'devel', b'strip-obsmarkers', default=True,
)
coreconfigitem(
    b'devel', b'warn-config', default=None,
)
coreconfigitem(
    b'devel', b'warn-config-default', default=None,
)
coreconfigitem(
    b'devel', b'user.obsmarker', default=None,
)
coreconfigitem(
    b'devel', b'warn-config-unknown', default=None,
)
coreconfigitem(
    b'devel', b'debug.copies', default=False,
)
coreconfigitem(
    b'devel', b'debug.extensions', default=False,
)
coreconfigitem(
    b'devel', b'debug.repo-filters', default=False,
)
coreconfigitem(
    b'devel', b'debug.peer-request', default=False,
)
coreconfigitem(
    b'devel', b'discovery.randomize', default=True,
)
_registerdiffopts(section=b'diff')
coreconfigitem(
    b'email', b'bcc', default=None,
)
coreconfigitem(
    b'email', b'cc', default=None,
)
coreconfigitem(
    b'email', b'charsets', default=list,
)
coreconfigitem(
    b'email', b'from', default=None,
)
coreconfigitem(
    b'email', b'method', default=b'smtp',
)
coreconfigitem(
    b'email', b'reply-to', default=None,
)
coreconfigitem(
    b'email', b'to', default=None,
)
coreconfigitem(
    b'experimental', b'archivemetatemplate', default=dynamicdefault,
)
coreconfigitem(
    b'experimental', b'auto-publish', default=b'publish',
)
coreconfigitem(
    b'experimental', b'bundle-phases', default=False,
)
coreconfigitem(
    b'experimental', b'bundle2-advertise', default=True,
)
coreconfigitem(
    b'experimental', b'bundle2-output-capture', default=False,
)
coreconfigitem(
    b'experimental', b'bundle2.pushback', default=False,
)
coreconfigitem(
    b'experimental', b'bundle2lazylocking', default=False,
)
coreconfigitem(
    b'experimental', b'bundlecomplevel', default=None,
)
coreconfigitem(
    b'experimental', b'bundlecomplevel.bzip2', default=None,
)
coreconfigitem(
    b'experimental', b'bundlecomplevel.gzip', default=None,
)
coreconfigitem(
    b'experimental', b'bundlecomplevel.none', default=None,
)
coreconfigitem(
    b'experimental', b'bundlecomplevel.zstd', default=None,
)
coreconfigitem(
    b'experimental', b'changegroup3', default=False,
)
coreconfigitem(
    b'experimental', b'cleanup-as-archived', default=False,
)
coreconfigitem(
    b'experimental', b'clientcompressionengines', default=list,
)
coreconfigitem(
    b'experimental', b'copytrace', default=b'on',
)
coreconfigitem(
    b'experimental', b'copytrace.movecandidateslimit', default=100,
)
coreconfigitem(
    b'experimental', b'copytrace.sourcecommitlimit', default=100,
)
coreconfigitem(
    b'experimental', b'copies.read-from', default=b"filelog-only",
)
coreconfigitem(
    b'experimental', b'copies.write-to', default=b'filelog-only',
)
coreconfigitem(
    b'experimental', b'crecordtest', default=None,
)
coreconfigitem(
    b'experimental', b'directaccess', default=False,
)
coreconfigitem(
    b'experimental', b'directaccess.revnums', default=False,
)
coreconfigitem(
    b'experimental', b'editortmpinhg', default=False,
)
coreconfigitem(
    b'experimental', b'evolution', default=list,
)
coreconfigitem(
    b'experimental',
    b'evolution.allowdivergence',
    default=False,
    alias=[(b'experimental', b'allowdivergence')],
)
coreconfigitem(
    b'experimental', b'evolution.allowunstable', default=None,
)
coreconfigitem(
    b'experimental', b'evolution.createmarkers', default=None,
)
coreconfigitem(
    b'experimental',
    b'evolution.effect-flags',
    default=True,
    alias=[(b'experimental', b'effect-flags')],
)
coreconfigitem(
    b'experimental', b'evolution.exchange', default=None,
)
coreconfigitem(
    b'experimental', b'evolution.bundle-obsmarker', default=False,
)
coreconfigitem(
    b'experimental', b'log.topo', default=False,
)
coreconfigitem(
    b'experimental', b'evolution.report-instabilities', default=True,
)
coreconfigitem(
    b'experimental', b'evolution.track-operation', default=True,
)
# repo-level config to exclude a revset visibility
#
# The target use case is to use `share` to expose different subset of the same
# repository, especially server side. See also `server.view`.
coreconfigitem(
    b'experimental', b'extra-filter-revs', default=None,
)
coreconfigitem(
    b'experimental', b'maxdeltachainspan', default=-1,
)
coreconfigitem(
    b'experimental', b'mergetempdirprefix', default=None,
)
coreconfigitem(
    b'experimental', b'mmapindexthreshold', default=None,
)
coreconfigitem(
    b'experimental', b'narrow', default=False,
)
coreconfigitem(
    b'experimental', b'nonnormalparanoidcheck', default=False,
)
coreconfigitem(
    b'experimental', b'exportableenviron', default=list,
)
coreconfigitem(
    b'experimental', b'extendedheader.index', default=None,
)
coreconfigitem(
    b'experimental', b'extendedheader.similarity', default=False,
)
coreconfigitem(
    b'experimental', b'graphshorten', default=False,
)
coreconfigitem(
    b'experimental', b'graphstyle.parent', default=dynamicdefault,
)
coreconfigitem(
    b'experimental', b'graphstyle.missing', default=dynamicdefault,
)
coreconfigitem(
    b'experimental', b'graphstyle.grandparent', default=dynamicdefault,
)
coreconfigitem(
    b'experimental', b'hook-track-tags', default=False,
)
coreconfigitem(
    b'experimental', b'httppeer.advertise-v2', default=False,
)
coreconfigitem(
    b'experimental', b'httppeer.v2-encoder-order', default=None,
)
coreconfigitem(
    b'experimental', b'httppostargs', default=False,
)
coreconfigitem(
    b'experimental', b'mergedriver', default=None,
)
coreconfigitem(b'experimental', b'nointerrupt', default=False)
coreconfigitem(b'experimental', b'nointerrupt-interactiveonly', default=True)

coreconfigitem(
    b'experimental', b'obsmarkers-exchange-debug', default=False,
)
coreconfigitem(
    b'experimental', b'remotenames', default=False,
)
coreconfigitem(
    b'experimental', b'removeemptydirs', default=True,
)
coreconfigitem(
    b'experimental', b'revert.interactive.select-to-keep', default=False,
)
coreconfigitem(
    b'experimental', b'revisions.prefixhexnode', default=False,
)
coreconfigitem(
    b'experimental', b'revlogv2', default=None,
)
coreconfigitem(
    b'experimental', b'revisions.disambiguatewithin', default=None,
)
coreconfigitem(
    b'experimental', b'server.filesdata.recommended-batch-size', default=50000,
)
coreconfigitem(
    b'experimental',
    b'server.manifestdata.recommended-batch-size',
    default=100000,
)
coreconfigitem(
    b'experimental', b'server.stream-narrow-clones', default=False,
)
coreconfigitem(
    b'experimental', b'single-head-per-branch', default=False,
)
coreconfigitem(
    b'experimental',
    b'single-head-per-branch:account-closed-heads',
    default=False,
)
coreconfigitem(
    b'experimental', b'sshserver.support-v2', default=False,
)
coreconfigitem(
    b'experimental', b'sparse-read', default=False,
)
coreconfigitem(
    b'experimental', b'sparse-read.density-threshold', default=0.50,
)
coreconfigitem(
    b'experimental', b'sparse-read.min-gap-size', default=b'65K',
)
coreconfigitem(
    b'experimental', b'treemanifest', default=False,
)
coreconfigitem(
    b'experimental', b'update.atomic-file', default=False,
)
coreconfigitem(
    b'experimental', b'sshpeer.advertise-v2', default=False,
)
coreconfigitem(
    b'experimental', b'web.apiserver', default=False,
)
coreconfigitem(
    b'experimental', b'web.api.http-v2', default=False,
)
coreconfigitem(
    b'experimental', b'web.api.debugreflect', default=False,
)
coreconfigitem(
    b'experimental', b'worker.wdir-get-thread-safe', default=False,
)
coreconfigitem(
    b'experimental', b'worker.repository-upgrade', default=False,
)
coreconfigitem(
    b'experimental', b'xdiff', default=False,
)
coreconfigitem(
    b'extensions', b'.*', default=None, generic=True,
)
coreconfigitem(
    b'extdata', b'.*', default=None, generic=True,
)
coreconfigitem(
    b'format', b'bookmarks-in-store', default=False,
)
coreconfigitem(
    b'format', b'chunkcachesize', default=None, experimental=True,
)
coreconfigitem(
    b'format', b'dotencode', default=True,
)
coreconfigitem(
    b'format', b'generaldelta', default=False, experimental=True,
)
coreconfigitem(
    b'format', b'manifestcachesize', default=None, experimental=True,
)
coreconfigitem(
    b'format', b'maxchainlen', default=dynamicdefault, experimental=True,
)
coreconfigitem(
    b'format', b'obsstore-version', default=None,
)
coreconfigitem(
    b'format', b'sparse-revlog', default=True,
)
coreconfigitem(
    b'format',
    b'revlog-compression',
    default=b'zlib',
    alias=[(b'experimental', b'format.compression')],
)
coreconfigitem(
    b'format', b'usefncache', default=True,
)
coreconfigitem(
    b'format', b'usegeneraldelta', default=True,
)
coreconfigitem(
    b'format', b'usestore', default=True,
)
coreconfigitem(
    b'format',
    b'exp-use-copies-side-data-changeset',
    default=False,
    experimental=True,
)
coreconfigitem(
    b'format', b'exp-use-side-data', default=False, experimental=True,
)
coreconfigitem(
    b'format', b'internal-phase', default=False, experimental=True,
)
coreconfigitem(
    b'fsmonitor', b'warn_when_unused', default=True,
)
coreconfigitem(
    b'fsmonitor', b'warn_update_file_count', default=50000,
)
coreconfigitem(
    b'help', br'hidden-command\..*', default=False, generic=True,
)
coreconfigitem(
    b'help', br'hidden-topic\..*', default=False, generic=True,
)
coreconfigitem(
    b'hooks', b'.*', default=dynamicdefault, generic=True,
)
coreconfigitem(
    b'hgweb-paths', b'.*', default=list, generic=True,
)
coreconfigitem(
    b'hostfingerprints', b'.*', default=list, generic=True,
)
coreconfigitem(
    b'hostsecurity', b'ciphers', default=None,
)
coreconfigitem(
    b'hostsecurity', b'disabletls10warning', default=False,
)
coreconfigitem(
    b'hostsecurity', b'minimumprotocol', default=dynamicdefault,
)
coreconfigitem(
    b'hostsecurity',
    b'.*:minimumprotocol$',
    default=dynamicdefault,
    generic=True,
)
coreconfigitem(
    b'hostsecurity', b'.*:ciphers$', default=dynamicdefault, generic=True,
)
coreconfigitem(
    b'hostsecurity', b'.*:fingerprints$', default=list, generic=True,
)
coreconfigitem(
    b'hostsecurity', b'.*:verifycertsfile$', default=None, generic=True,
)

coreconfigitem(
    b'http_proxy', b'always', default=False,
)
coreconfigitem(
    b'http_proxy', b'host', default=None,
)
coreconfigitem(
    b'http_proxy', b'no', default=list,
)
coreconfigitem(
    b'http_proxy', b'passwd', default=None,
)
coreconfigitem(
    b'http_proxy', b'user', default=None,
)

coreconfigitem(
    b'http', b'timeout', default=None,
)

coreconfigitem(
    b'logtoprocess', b'commandexception', default=None,
)
coreconfigitem(
    b'logtoprocess', b'commandfinish', default=None,
)
coreconfigitem(
    b'logtoprocess', b'command', default=None,
)
coreconfigitem(
    b'logtoprocess', b'develwarn', default=None,
)
coreconfigitem(
    b'logtoprocess', b'uiblocked', default=None,
)
coreconfigitem(
    b'merge', b'checkunknown', default=b'abort',
)
coreconfigitem(
    b'merge', b'checkignored', default=b'abort',
)
coreconfigitem(
    b'experimental', b'merge.checkpathconflicts', default=False,
)
coreconfigitem(
    b'merge', b'followcopies', default=True,
)
coreconfigitem(
    b'merge', b'on-failure', default=b'continue',
)
coreconfigitem(
    b'merge', b'preferancestor', default=lambda: [b'*'], experimental=True,
)
coreconfigitem(
    b'merge', b'strict-capability-check', default=False,
)
coreconfigitem(
    b'merge-tools', b'.*', default=None, generic=True,
)
coreconfigitem(
    b'merge-tools',
    br'.*\.args$',
    default=b"$local $base $other",
    generic=True,
    priority=-1,
)
coreconfigitem(
    b'merge-tools', br'.*\.binary$', default=False, generic=True, priority=-1,
)
coreconfigitem(
    b'merge-tools', br'.*\.check$', default=list, generic=True, priority=-1,
)
coreconfigitem(
    b'merge-tools',
    br'.*\.checkchanged$',
    default=False,
    generic=True,
    priority=-1,
)
coreconfigitem(
    b'merge-tools',
    br'.*\.executable$',
    default=dynamicdefault,
    generic=True,
    priority=-1,
)
coreconfigitem(
    b'merge-tools', br'.*\.fixeol$', default=False, generic=True, priority=-1,
)
coreconfigitem(
    b'merge-tools', br'.*\.gui$', default=False, generic=True, priority=-1,
)
coreconfigitem(
    b'merge-tools',
    br'.*\.mergemarkers$',
    default=b'basic',
    generic=True,
    priority=-1,
)
coreconfigitem(
    b'merge-tools',
    br'.*\.mergemarkertemplate$',
    default=dynamicdefault,  # take from ui.mergemarkertemplate
    generic=True,
    priority=-1,
)
coreconfigitem(
    b'merge-tools', br'.*\.priority$', default=0, generic=True, priority=-1,
)
coreconfigitem(
    b'merge-tools',
    br'.*\.premerge$',
    default=dynamicdefault,
    generic=True,
    priority=-1,
)
coreconfigitem(
    b'merge-tools', br'.*\.symlink$', default=False, generic=True, priority=-1,
)
coreconfigitem(
    b'pager', b'attend-.*', default=dynamicdefault, generic=True,
)
coreconfigitem(
    b'pager', b'ignore', default=list,
)
coreconfigitem(
    b'pager', b'pager', default=dynamicdefault,
)
coreconfigitem(
    b'patch', b'eol', default=b'strict',
)
coreconfigitem(
    b'patch', b'fuzz', default=2,
)
coreconfigitem(
    b'paths', b'default', default=None,
)
coreconfigitem(
    b'paths', b'default-push', default=None,
)
coreconfigitem(
    b'paths', b'.*', default=None, generic=True,
)
coreconfigitem(
    b'phases', b'checksubrepos', default=b'follow',
)
coreconfigitem(
    b'phases', b'new-commit', default=b'draft',
)
coreconfigitem(
    b'phases', b'publish', default=True,
)
coreconfigitem(
    b'profiling', b'enabled', default=False,
)
coreconfigitem(
    b'profiling', b'format', default=b'text',
)
coreconfigitem(
    b'profiling', b'freq', default=1000,
)
coreconfigitem(
    b'profiling', b'limit', default=30,
)
coreconfigitem(
    b'profiling', b'nested', default=0,
)
coreconfigitem(
    b'profiling', b'output', default=None,
)
coreconfigitem(
    b'profiling', b'showmax', default=0.999,
)
coreconfigitem(
    b'profiling', b'showmin', default=dynamicdefault,
)
coreconfigitem(
    b'profiling', b'showtime', default=True,
)
coreconfigitem(
    b'profiling', b'sort', default=b'inlinetime',
)
coreconfigitem(
    b'profiling', b'statformat', default=b'hotpath',
)
coreconfigitem(
    b'profiling', b'time-track', default=dynamicdefault,
)
coreconfigitem(
    b'profiling', b'type', default=b'stat',
)
coreconfigitem(
    b'progress', b'assume-tty', default=False,
)
coreconfigitem(
    b'progress', b'changedelay', default=1,
)
coreconfigitem(
    b'progress', b'clear-complete', default=True,
)
coreconfigitem(
    b'progress', b'debug', default=False,
)
coreconfigitem(
    b'progress', b'delay', default=3,
)
coreconfigitem(
    b'progress', b'disable', default=False,
)
coreconfigitem(
    b'progress', b'estimateinterval', default=60.0,
)
coreconfigitem(
    b'progress',
    b'format',
    default=lambda: [b'topic', b'bar', b'number', b'estimate'],
)
coreconfigitem(
    b'progress', b'refresh', default=0.1,
)
coreconfigitem(
    b'progress', b'width', default=dynamicdefault,
)
coreconfigitem(
    b'push', b'pushvars.server', default=False,
)
coreconfigitem(
    b'rewrite',
    b'backup-bundle',
    default=True,
    alias=[(b'ui', b'history-editing-backup')],
)
coreconfigitem(
    b'rewrite', b'update-timestamp', default=False,
)
coreconfigitem(
    b'storage', b'new-repo-backend', default=b'revlogv1', experimental=True,
)
coreconfigitem(
    b'storage',
    b'revlog.optimize-delta-parent-choice',
    default=True,
    alias=[(b'format', b'aggressivemergedeltas')],
)
coreconfigitem(
    b'storage', b'revlog.reuse-external-delta', default=True,
)
coreconfigitem(
    b'storage', b'revlog.reuse-external-delta-parent', default=None,
)
coreconfigitem(
    b'storage', b'revlog.zlib.level', default=None,
)
coreconfigitem(
    b'storage', b'revlog.zstd.level', default=None,
)
coreconfigitem(
    b'server', b'bookmarks-pushkey-compat', default=True,
)
coreconfigitem(
    b'server', b'bundle1', default=True,
)
coreconfigitem(
    b'server', b'bundle1gd', default=None,
)
coreconfigitem(
    b'server', b'bundle1.pull', default=None,
)
coreconfigitem(
    b'server', b'bundle1gd.pull', default=None,
)
coreconfigitem(
    b'server', b'bundle1.push', default=None,
)
coreconfigitem(
    b'server', b'bundle1gd.push', default=None,
)
coreconfigitem(
    b'server',
    b'bundle2.stream',
    default=True,
    alias=[(b'experimental', b'bundle2.stream')],
)
coreconfigitem(
    b'server', b'compressionengines', default=list,
)
coreconfigitem(
    b'server', b'concurrent-push-mode', default=b'strict',
)
coreconfigitem(
    b'server', b'disablefullbundle', default=False,
)
coreconfigitem(
    b'server', b'maxhttpheaderlen', default=1024,
)
coreconfigitem(
    b'server', b'pullbundle', default=False,
)
coreconfigitem(
    b'server', b'preferuncompressed', default=False,
)
coreconfigitem(
    b'server', b'streamunbundle', default=False,
)
coreconfigitem(
    b'server', b'uncompressed', default=True,
)
coreconfigitem(
    b'server', b'uncompressedallowsecret', default=False,
)
coreconfigitem(
    b'server', b'view', default=b'served',
)
coreconfigitem(
    b'server', b'validate', default=False,
)
coreconfigitem(
    b'server', b'zliblevel', default=-1,
)
coreconfigitem(
    b'server', b'zstdlevel', default=3,
)
coreconfigitem(
    b'share', b'pool', default=None,
)
coreconfigitem(
    b'share', b'poolnaming', default=b'identity',
)
coreconfigitem(
    b'shelve', b'maxbackups', default=10,
)
coreconfigitem(
    b'smtp', b'host', default=None,
)
coreconfigitem(
    b'smtp', b'local_hostname', default=None,
)
coreconfigitem(
    b'smtp', b'password', default=None,
)
coreconfigitem(
    b'smtp', b'port', default=dynamicdefault,
)
coreconfigitem(
    b'smtp', b'tls', default=b'none',
)
coreconfigitem(
    b'smtp', b'username', default=None,
)
coreconfigitem(
    b'sparse', b'missingwarning', default=True, experimental=True,
)
coreconfigitem(
    b'subrepos',
    b'allowed',
    default=dynamicdefault,  # to make backporting simpler
)
coreconfigitem(
    b'subrepos', b'hg:allowed', default=dynamicdefault,
)
coreconfigitem(
    b'subrepos', b'git:allowed', default=dynamicdefault,
)
coreconfigitem(
    b'subrepos', b'svn:allowed', default=dynamicdefault,
)
coreconfigitem(
    b'templates', b'.*', default=None, generic=True,
)
coreconfigitem(
    b'templateconfig', b'.*', default=dynamicdefault, generic=True,
)
coreconfigitem(
    b'trusted', b'groups', default=list,
)
coreconfigitem(
    b'trusted', b'users', default=list,
)
coreconfigitem(
    b'ui', b'_usedassubrepo', default=False,
)
coreconfigitem(
    b'ui', b'allowemptycommit', default=False,
)
coreconfigitem(
    b'ui', b'archivemeta', default=True,
)
coreconfigitem(
    b'ui', b'askusername', default=False,
)
coreconfigitem(
    b'ui', b'clonebundlefallback', default=False,
)
coreconfigitem(
    b'ui', b'clonebundleprefers', default=list,
)
coreconfigitem(
    b'ui', b'clonebundles', default=True,
)
coreconfigitem(
    b'ui', b'color', default=b'auto',
)
coreconfigitem(
    b'ui', b'commitsubrepos', default=False,
)
coreconfigitem(
    b'ui', b'debug', default=False,
)
coreconfigitem(
    b'ui', b'debugger', default=None,
)
coreconfigitem(
    b'ui', b'editor', default=dynamicdefault,
)
coreconfigitem(
    b'ui', b'fallbackencoding', default=None,
)
coreconfigitem(
    b'ui', b'forcecwd', default=None,
)
coreconfigitem(
    b'ui', b'forcemerge', default=None,
)
coreconfigitem(
    b'ui', b'formatdebug', default=False,
)
coreconfigitem(
    b'ui', b'formatjson', default=False,
)
coreconfigitem(
    b'ui', b'formatted', default=None,
)
coreconfigitem(
    b'ui', b'graphnodetemplate', default=None,
)
coreconfigitem(
    b'ui', b'interactive', default=None,
)
coreconfigitem(
    b'ui', b'interface', default=None,
)
coreconfigitem(
    b'ui', b'interface.chunkselector', default=None,
)
coreconfigitem(
    b'ui', b'large-file-limit', default=10000000,
)
coreconfigitem(
    b'ui', b'logblockedtimes', default=False,
)
coreconfigitem(
    b'ui', b'logtemplate', default=None,
)
coreconfigitem(
    b'ui', b'merge', default=None,
)
coreconfigitem(
    b'ui', b'mergemarkers', default=b'basic',
)
coreconfigitem(
    b'ui',
    b'mergemarkertemplate',
    default=(
        b'{node|short} '
        b'{ifeq(tags, "tip", "", '
        b'ifeq(tags, "", "", "{tags} "))}'
        b'{if(bookmarks, "{bookmarks} ")}'
        b'{ifeq(branch, "default", "", "{branch} ")}'
        b'- {author|user}: {desc|firstline}'
    ),
)
coreconfigitem(
    b'ui', b'message-output', default=b'stdio',
)
coreconfigitem(
    b'ui', b'nontty', default=False,
)
coreconfigitem(
    b'ui', b'origbackuppath', default=None,
)
coreconfigitem(
    b'ui', b'paginate', default=True,
)
coreconfigitem(
    b'ui', b'patch', default=None,
)
coreconfigitem(
    b'ui', b'pre-merge-tool-output-template', default=None,
)
coreconfigitem(
    b'ui', b'portablefilenames', default=b'warn',
)
coreconfigitem(
    b'ui', b'promptecho', default=False,
)
coreconfigitem(
    b'ui', b'quiet', default=False,
)
coreconfigitem(
    b'ui', b'quietbookmarkmove', default=False,
)
coreconfigitem(
    b'ui', b'relative-paths', default=b'legacy',
)
coreconfigitem(
    b'ui', b'remotecmd', default=b'hg',
)
coreconfigitem(
    b'ui', b'report_untrusted', default=True,
)
coreconfigitem(
    b'ui', b'rollback', default=True,
)
coreconfigitem(
    b'ui', b'signal-safe-lock', default=True,
)
coreconfigitem(
    b'ui', b'slash', default=False,
)
coreconfigitem(
    b'ui', b'ssh', default=b'ssh',
)
coreconfigitem(
    b'ui', b'ssherrorhint', default=None,
)
coreconfigitem(
    b'ui', b'statuscopies', default=False,
)
coreconfigitem(
    b'ui', b'strict', default=False,
)
coreconfigitem(
    b'ui', b'style', default=b'',
)
coreconfigitem(
    b'ui', b'supportcontact', default=None,
)
coreconfigitem(
    b'ui', b'textwidth', default=78,
)
coreconfigitem(
    b'ui', b'timeout', default=b'600',
)
coreconfigitem(
    b'ui', b'timeout.warn', default=0,
)
coreconfigitem(
    b'ui', b'traceback', default=False,
)
coreconfigitem(
    b'ui', b'tweakdefaults', default=False,
)
coreconfigitem(b'ui', b'username', alias=[(b'ui', b'user')])
coreconfigitem(
    b'ui', b'verbose', default=False,
)
coreconfigitem(
    b'verify', b'skipflags', default=None,
)
coreconfigitem(
    b'web', b'allowbz2', default=False,
)
coreconfigitem(
    b'web', b'allowgz', default=False,
)
coreconfigitem(
    b'web', b'allow-pull', alias=[(b'web', b'allowpull')], default=True,
)
coreconfigitem(
    b'web', b'allow-push', alias=[(b'web', b'allow_push')], default=list,
)
coreconfigitem(
    b'web', b'allowzip', default=False,
)
coreconfigitem(
    b'web', b'archivesubrepos', default=False,
)
coreconfigitem(
    b'web', b'cache', default=True,
)
coreconfigitem(
    b'web', b'comparisoncontext', default=5,
)
coreconfigitem(
    b'web', b'contact', default=None,
)
coreconfigitem(
    b'web', b'deny_push', default=list,
)
coreconfigitem(
    b'web', b'guessmime', default=False,
)
coreconfigitem(
    b'web', b'hidden', default=False,
)
coreconfigitem(
    b'web', b'labels', default=list,
)
coreconfigitem(
    b'web', b'logoimg', default=b'hglogo.png',
)
coreconfigitem(
    b'web', b'logourl', default=b'https://mercurial-scm.org/',
)
coreconfigitem(
    b'web', b'accesslog', default=b'-',
)
coreconfigitem(
    b'web', b'address', default=b'',
)
coreconfigitem(
    b'web', b'allow-archive', alias=[(b'web', b'allow_archive')], default=list,
)
coreconfigitem(
    b'web', b'allow_read', default=list,
)
coreconfigitem(
    b'web', b'baseurl', default=None,
)
coreconfigitem(
    b'web', b'cacerts', default=None,
)
coreconfigitem(
    b'web', b'certificate', default=None,
)
coreconfigitem(
    b'web', b'collapse', default=False,
)
coreconfigitem(
    b'web', b'csp', default=None,
)
coreconfigitem(
    b'web', b'deny_read', default=list,
)
coreconfigitem(
    b'web', b'descend', default=True,
)
coreconfigitem(
    b'web', b'description', default=b"",
)
coreconfigitem(
    b'web', b'encoding', default=lambda: encoding.encoding,
)
coreconfigitem(
    b'web', b'errorlog', default=b'-',
)
coreconfigitem(
    b'web', b'ipv6', default=False,
)
coreconfigitem(
    b'web', b'maxchanges', default=10,
)
coreconfigitem(
    b'web', b'maxfiles', default=10,
)
coreconfigitem(
    b'web', b'maxshortchanges', default=60,
)
coreconfigitem(
    b'web', b'motd', default=b'',
)
coreconfigitem(
    b'web', b'name', default=dynamicdefault,
)
coreconfigitem(
    b'web', b'port', default=8000,
)
coreconfigitem(
    b'web', b'prefix', default=b'',
)
coreconfigitem(
    b'web', b'push_ssl', default=True,
)
coreconfigitem(
    b'web', b'refreshinterval', default=20,
)
coreconfigitem(
    b'web', b'server-header', default=None,
)
coreconfigitem(
    b'web', b'static', default=None,
)
coreconfigitem(
    b'web', b'staticurl', default=None,
)
coreconfigitem(
    b'web', b'stripes', default=1,
)
coreconfigitem(
    b'web', b'style', default=b'paper',
)
coreconfigitem(
    b'web', b'templates', default=None,
)
coreconfigitem(
    b'web', b'view', default=b'served', experimental=True,
)
coreconfigitem(
    b'worker', b'backgroundclose', default=dynamicdefault,
)
# Windows defaults to a limit of 512 open files. A buffer of 128
# should give us enough headway.
coreconfigitem(
    b'worker', b'backgroundclosemaxqueue', default=384,
)
coreconfigitem(
    b'worker', b'backgroundcloseminfilecount', default=2048,
)
coreconfigitem(
    b'worker', b'backgroundclosethreadcount', default=4,
)
coreconfigitem(
    b'worker', b'enabled', default=True,
)
coreconfigitem(
    b'worker', b'numcpus', default=None,
)

# Rebase related configuration moved to core because other extension are doing
# strange things. For example, shelve import the extensions to reuse some bit
# without formally loading it.
coreconfigitem(
    b'commands', b'rebase.requiredest', default=False,
)
coreconfigitem(
    b'experimental', b'rebaseskipobsolete', default=True,
)
coreconfigitem(
    b'rebase', b'singletransaction', default=False,
)
coreconfigitem(
    b'rebase', b'experimental.inmemory', default=False,
)