errors: use InputError for some invalid revsets and such

Differential Revision: https://phab.mercurial-scm.org/D11496

mercurial/commands.py

@@ -1,7968 +1,7968 b''
 # commands.py - command processing for mercurial
 #
 # Copyright 2005-2007 Olivia 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 os
 import re
 import sys
 
 from .i18n import _
 from .node import (
     hex,
     nullrev,
     short,
     wdirrev,
 )
 from .pycompat import open
 from . import (
     archival,
     bookmarks,
     bundle2,
     bundlecaches,
     changegroup,
     cmdutil,
     copies,
     debugcommands as debugcommandsmod,
     destutil,
     dirstateguard,
     discovery,
     encoding,
     error,
     exchange,
     extensions,
     filemerge,
     formatter,
     graphmod,
     grep as grepmod,
     hbisect,
     help,
     hg,
     logcmdutil,
     merge as mergemod,
     mergestate as mergestatemod,
     narrowspec,
     obsolete,
     obsutil,
     patch,
     phases,
     pycompat,
     rcutil,
     registrar,
     requirements,
     revsetlang,
     rewriteutil,
     scmutil,
     server,
     shelve as shelvemod,
     state as statemod,
     streamclone,
     tags as tagsmod,
     ui as uimod,
     util,
     verify as verifymod,
     vfs as vfsmod,
     wireprotoserver,
 )
 from .utils import (
     dateutil,
     stringutil,
     urlutil,
 )
 
 table = {}
 table.update(debugcommandsmod.command._table)
 
 command = registrar.command(table)
 INTENT_READONLY = registrar.INTENT_READONLY
 
 # common command options
 
 globalopts = [
     (
         b'R',
         b'repository',
         b'',
         _(b'repository root directory or name of overlay bundle file'),
         _(b'REPO'),
     ),
     (b'', b'cwd', b'', _(b'change working directory'), _(b'DIR')),
     (
         b'y',
         b'noninteractive',
         None,
         _(
             b'do not prompt, automatically pick the first choice for all prompts'
         ),
     ),
     (b'q', b'quiet', None, _(b'suppress output')),
     (b'v', b'verbose', None, _(b'enable additional output')),
     (
         b'',
         b'color',
         b'',
         # i18n: 'always', 'auto', 'never', and 'debug' are keywords
         # and should not be translated
         _(b"when to colorize (boolean, always, auto, never, or debug)"),
         _(b'TYPE'),
     ),
     (
         b'',
         b'config',
         [],
         _(b'set/override config option (use \'section.name=value\')'),
         _(b'CONFIG'),
     ),
     (b'', b'debug', None, _(b'enable debugging output')),
     (b'', b'debugger', None, _(b'start debugger')),
     (
         b'',
         b'encoding',
         encoding.encoding,
         _(b'set the charset encoding'),
         _(b'ENCODE'),
     ),
     (
         b'',
         b'encodingmode',
         encoding.encodingmode,
         _(b'set the charset encoding mode'),
         _(b'MODE'),
     ),
     (b'', b'traceback', None, _(b'always print a traceback on exception')),
     (b'', b'time', None, _(b'time how long the command takes')),
     (b'', b'profile', None, _(b'print command execution profile')),
     (b'', b'version', None, _(b'output version information and exit')),
     (b'h', b'help', None, _(b'display help and exit')),
     (b'', b'hidden', False, _(b'consider hidden changesets')),
     (
         b'',
         b'pager',
         b'auto',
         _(b"when to paginate (boolean, always, auto, or never)"),
         _(b'TYPE'),
     ),
 ]
 
 dryrunopts = cmdutil.dryrunopts
 remoteopts = cmdutil.remoteopts
 walkopts = cmdutil.walkopts
 commitopts = cmdutil.commitopts
 commitopts2 = cmdutil.commitopts2
 commitopts3 = cmdutil.commitopts3
 formatteropts = cmdutil.formatteropts
 templateopts = cmdutil.templateopts
 logopts = cmdutil.logopts
 diffopts = cmdutil.diffopts
 diffwsopts = cmdutil.diffwsopts
 diffopts2 = cmdutil.diffopts2
 mergetoolopts = cmdutil.mergetoolopts
 similarityopts = cmdutil.similarityopts
 subrepoopts = cmdutil.subrepoopts
 debugrevlogopts = cmdutil.debugrevlogopts
 
 # Commands start here, listed alphabetically
 
 
 @command(
     b'abort',
     dryrunopts,
     helpcategory=command.CATEGORY_CHANGE_MANAGEMENT,
     helpbasic=True,
 )
 def abort(ui, repo, **opts):
     """abort an unfinished operation (EXPERIMENTAL)
 
     Aborts a multistep operation like graft, histedit, rebase, merge,
     and unshelve if they are in an unfinished state.
 
     use --dry-run/-n to dry run the command.
     """
     dryrun = opts.get('dry_run')
     abortstate = cmdutil.getunfinishedstate(repo)
     if not abortstate:
         raise error.StateError(_(b'no operation in progress'))
     if not abortstate.abortfunc:
         raise error.InputError(
             (
                 _(b"%s in progress but does not support 'hg abort'")
                 % (abortstate._opname)
             ),
             hint=abortstate.hint(),
         )
     if dryrun:
         ui.status(
             _(b'%s in progress, will be aborted\n') % (abortstate._opname)
         )
         return
     return abortstate.abortfunc(ui, repo)
 
 
 @command(
     b'add',
     walkopts + subrepoopts + dryrunopts,
     _(b'[OPTION]... [FILE]...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
     helpbasic=True,
     inferrepo=True,
 )
 def add(ui, repo, *pats, **opts):
     """add the specified files on the next commit
 
     Schedule files to be version controlled and added to the
     repository.
 
     The files will be added to the repository at the next commit. To
     undo an add before that, see :hg:`forget`.
 
     If no names are given, add all files to the repository (except
     files matching ``.hgignore``).
 
     .. container:: verbose
 
        Examples:
 
          - New (unknown) files are added
            automatically by :hg:`add`::
 
              $ ls
              foo.c
              $ hg status
              ? foo.c
              $ hg add
              adding foo.c
              $ hg status
              A foo.c
 
          - Specific files to be added can be specified::
 
              $ ls
              bar.c  foo.c
              $ hg status
              ? bar.c
              ? foo.c
              $ hg add bar.c
              $ hg status
              A bar.c
              ? foo.c
 
     Returns 0 if all files are successfully added.
     """
 
     m = scmutil.match(repo[None], pats, pycompat.byteskwargs(opts))
     uipathfn = scmutil.getuipathfn(repo, legacyrelativevalue=True)
     rejected = cmdutil.add(ui, repo, m, b"", uipathfn, False, **opts)
     return rejected and 1 or 0
 
 
 @command(
     b'addremove',
     similarityopts + subrepoopts + walkopts + dryrunopts,
     _(b'[OPTION]... [FILE]...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
     inferrepo=True,
 )
 def addremove(ui, repo, *pats, **opts):
     """add all new files, delete all missing files
 
     Add all new files and remove all missing files from the
     repository.
 
     Unless names are given, new files are ignored if they match any of
     the patterns in ``.hgignore``. As with add, these changes take
     effect at the next commit.
 
     Use the -s/--similarity option to detect renamed files. This
     option takes a percentage between 0 (disabled) and 100 (files must
     be identical) as its parameter. With a parameter greater than 0,
     this compares every removed file with every added file and records
     those similar enough as renames. Detecting renamed files this way
     can be expensive. After using this option, :hg:`status -C` can be
     used to check which files were identified as moved or renamed. If
     not specified, -s/--similarity defaults to 100 and only renames of
     identical files are detected.
 
     .. container:: verbose
 
        Examples:
 
          - A number of files (bar.c and foo.c) are new,
            while foobar.c has been removed (without using :hg:`remove`)
            from the repository::
 
              $ ls
              bar.c foo.c
              $ hg status
              ! foobar.c
              ? bar.c
              ? foo.c
              $ hg addremove
              adding bar.c
              adding foo.c
              removing foobar.c
              $ hg status
              A bar.c
              A foo.c
              R foobar.c
 
          - A file foobar.c was moved to foo.c without using :hg:`rename`.
            Afterwards, it was edited slightly::
 
              $ ls
              foo.c
              $ hg status
              ! foobar.c
              ? foo.c
              $ hg addremove --similarity 90
              removing foobar.c
              adding foo.c
              recording removal of foobar.c as rename to foo.c (94% similar)
              $ hg status -C
              A foo.c
                foobar.c
              R foobar.c
 
     Returns 0 if all files are successfully added.
     """
     opts = pycompat.byteskwargs(opts)
     if not opts.get(b'similarity'):
         opts[b'similarity'] = b'100'
     matcher = scmutil.match(repo[None], pats, opts)
     relative = scmutil.anypats(pats, opts)
     uipathfn = scmutil.getuipathfn(repo, legacyrelativevalue=relative)
     return scmutil.addremove(repo, matcher, b"", uipathfn, opts)
 
 
 @command(
     b'annotate|blame',
     [
         (b'r', b'rev', b'', _(b'annotate the specified revision'), _(b'REV')),
         (
             b'',
             b'follow',
             None,
             _(b'follow copies/renames and list the filename (DEPRECATED)'),
         ),
         (b'', b'no-follow', None, _(b"don't follow copies and renames")),
         (b'a', b'text', None, _(b'treat all files as text')),
         (b'u', b'user', None, _(b'list the author (long with -v)')),
         (b'f', b'file', None, _(b'list the filename')),
         (b'd', b'date', None, _(b'list the date (short with -q)')),
         (b'n', b'number', None, _(b'list the revision number (default)')),
         (b'c', b'changeset', None, _(b'list the changeset')),
         (
             b'l',
             b'line-number',
             None,
             _(b'show line number at the first appearance'),
         ),
         (
             b'',
             b'skip',
             [],
             _(b'revset to not display (EXPERIMENTAL)'),
             _(b'REV'),
         ),
     ]
     + diffwsopts
     + walkopts
     + formatteropts,
     _(b'[-r REV] [-f] [-a] [-u] [-d] [-n] [-c] [-l] FILE...'),
     helpcategory=command.CATEGORY_FILE_CONTENTS,
     helpbasic=True,
     inferrepo=True,
 )
 def annotate(ui, repo, *pats, **opts):
     """show changeset information by line for each file
 
     List changes in files, showing the revision id responsible for
     each line.
 
     This command is useful for discovering when a change was made and
     by whom.
 
     If you include --file, --user, or --date, the revision number is
     suppressed unless you also include --number.
 
     Without the -a/--text option, annotate will avoid processing files
     it detects as binary. With -a, annotate will annotate the file
     anyway, although the results will probably be neither useful
     nor desirable.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions. See also :hg:`help templates`.
 
       :lines:   List of lines with annotation data.
       :path:    String. Repository-absolute path of the specified file.
 
       And each entry of ``{lines}`` provides the following sub-keywords in
       addition to ``{date}``, ``{node}``, ``{rev}``, ``{user}``, etc.
 
       :line:    String. Line content.
       :lineno:  Integer. Line number at that revision.
       :path:    String. Repository-absolute path of the file at that revision.
 
       See :hg:`help templates.operators` for the list expansion syntax.
 
     Returns 0 on success.
     """
     opts = pycompat.byteskwargs(opts)
     if not pats:
         raise error.InputError(
             _(b'at least one filename or pattern is required')
         )
 
     if opts.get(b'follow'):
         # --follow is deprecated and now just an alias for -f/--file
         # to mimic the behavior of Mercurial before version 1.5
         opts[b'file'] = True
 
     if (
         not opts.get(b'user')
         and not opts.get(b'changeset')
         and not opts.get(b'date')
         and not opts.get(b'file')
     ):
         opts[b'number'] = True
 
     linenumber = opts.get(b'line_number') is not None
     if (
         linenumber
         and (not opts.get(b'changeset'))
         and (not opts.get(b'number'))
     ):
         raise error.InputError(_(b'at least one of -n/-c is required for -l'))
 
     rev = opts.get(b'rev')
     if rev:
         repo = scmutil.unhidehashlikerevs(repo, [rev], b'nowarn')
     ctx = scmutil.revsingle(repo, rev)
 
     ui.pager(b'annotate')
     rootfm = ui.formatter(b'annotate', opts)
     if ui.debugflag:
         shorthex = pycompat.identity
     else:
 
         def shorthex(h):
             return h[:12]
 
     if ui.quiet:
         datefunc = dateutil.shortdate
     else:
         datefunc = dateutil.datestr
     if ctx.rev() is None:
         if opts.get(b'changeset'):
             # omit "+" suffix which is appended to node hex
             def formatrev(rev):
                 if rev == wdirrev:
                     return b'%d' % ctx.p1().rev()
                 else:
                     return b'%d' % rev
 
         else:
 
             def formatrev(rev):
                 if rev == wdirrev:
                     return b'%d+' % ctx.p1().rev()
                 else:
                     return b'%d ' % rev
 
         def formathex(h):
             if h == repo.nodeconstants.wdirhex:
                 return b'%s+' % shorthex(hex(ctx.p1().node()))
             else:
                 return b'%s ' % shorthex(h)
 
     else:
         formatrev = b'%d'.__mod__
         formathex = shorthex
 
     opmap = [
         (b'user', b' ', lambda x: x.fctx.user(), ui.shortuser),
         (b'rev', b' ', lambda x: scmutil.intrev(x.fctx), formatrev),
         (b'node', b' ', lambda x: hex(scmutil.binnode(x.fctx)), formathex),
         (b'date', b' ', lambda x: x.fctx.date(), util.cachefunc(datefunc)),
         (b'path', b' ', lambda x: x.fctx.path(), pycompat.bytestr),
         (b'lineno', b':', lambda x: x.lineno, pycompat.bytestr),
     ]
     opnamemap = {
         b'rev': b'number',
         b'node': b'changeset',
         b'path': b'file',
         b'lineno': b'line_number',
     }
 
     if rootfm.isplain():
 
         def makefunc(get, fmt):
             return lambda x: fmt(get(x))
 
     else:
 
         def makefunc(get, fmt):
             return get
 
     datahint = rootfm.datahint()
     funcmap = [
         (makefunc(get, fmt), sep)
         for fn, sep, get, fmt in opmap
         if opts.get(opnamemap.get(fn, fn)) or fn in datahint
     ]
     funcmap[0] = (funcmap[0][0], b'')  # no separator in front of first column
     fields = b' '.join(
         fn
         for fn, sep, get, fmt in opmap
         if opts.get(opnamemap.get(fn, fn)) or fn in datahint
     )
 
     def bad(x, y):
         raise error.Abort(b"%s: %s" % (x, y))
 
     m = scmutil.match(ctx, pats, opts, badfn=bad)
 
     follow = not opts.get(b'no_follow')
     diffopts = patch.difffeatureopts(
         ui, opts, section=b'annotate', whitespace=True
     )
     skiprevs = opts.get(b'skip')
     if skiprevs:
         skiprevs = scmutil.revrange(repo, skiprevs)
 
     uipathfn = scmutil.getuipathfn(repo, legacyrelativevalue=True)
     for abs in ctx.walk(m):
         fctx = ctx[abs]
         rootfm.startitem()
         rootfm.data(path=abs)
         if not opts.get(b'text') and fctx.isbinary():
             rootfm.plain(_(b"%s: binary file\n") % uipathfn(abs))
             continue
 
         fm = rootfm.nested(b'lines', tmpl=b'{rev}: {line}')
         lines = fctx.annotate(
             follow=follow, skiprevs=skiprevs, diffopts=diffopts
         )
         if not lines:
             fm.end()
             continue
         formats = []
         pieces = []
 
         for f, sep in funcmap:
             l = [f(n) for n in lines]
             if fm.isplain():
                 sizes = [encoding.colwidth(x) for x in l]
                 ml = max(sizes)
                 formats.append([sep + b' ' * (ml - w) + b'%s' for w in sizes])
             else:
                 formats.append([b'%s'] * len(l))
             pieces.append(l)
 
         for f, p, n in zip(zip(*formats), zip(*pieces), lines):
             fm.startitem()
             fm.context(fctx=n.fctx)
             fm.write(fields, b"".join(f), *p)
             if n.skip:
                 fmt = b"* %s"
             else:
                 fmt = b": %s"
             fm.write(b'line', fmt, n.text)
 
         if not lines[-1].text.endswith(b'\n'):
             fm.plain(b'\n')
         fm.end()
 
     rootfm.end()
 
 
 @command(
     b'archive',
     [
         (b'', b'no-decode', None, _(b'do not pass files through decoders')),
         (
             b'p',
             b'prefix',
             b'',
             _(b'directory prefix for files in archive'),
             _(b'PREFIX'),
         ),
         (b'r', b'rev', b'', _(b'revision to distribute'), _(b'REV')),
         (b't', b'type', b'', _(b'type of distribution to create'), _(b'TYPE')),
     ]
     + subrepoopts
     + walkopts,
     _(b'[OPTION]... DEST'),
     helpcategory=command.CATEGORY_IMPORT_EXPORT,
 )
 def archive(ui, repo, dest, **opts):
     """create an unversioned archive of a repository revision
 
     By default, the revision used is the parent of the working
     directory; use -r/--rev to specify a different revision.
 
     The archive type is automatically detected based on file
     extension (to override, use -t/--type).
 
     .. container:: verbose
 
       Examples:
 
       - create a zip file containing the 1.0 release::
 
           hg archive -r 1.0 project-1.0.zip
 
       - create a tarball excluding .hg files::
 
           hg archive project.tar.gz -X ".hg*"
 
     Valid types are:
 
     :``files``: a directory full of files (default)
     :``tar``:   tar archive, uncompressed
     :``tbz2``:  tar archive, compressed using bzip2
     :``tgz``:   tar archive, compressed using gzip
     :``txz``:   tar archive, compressed using lzma (only in Python 3)
     :``uzip``:  zip archive, uncompressed
     :``zip``:   zip archive, compressed using deflate
 
     The exact name of the destination archive or directory is given
     using a format string; see :hg:`help export` for details.
 
     Each member added to an archive file has a directory prefix
     prepended. Use -p/--prefix to specify a format string for the
     prefix. The default is the basename of the archive, with suffixes
     removed.
 
     Returns 0 on success.
     """
 
     opts = pycompat.byteskwargs(opts)
     rev = opts.get(b'rev')
     if rev:
         repo = scmutil.unhidehashlikerevs(repo, [rev], b'nowarn')
     ctx = scmutil.revsingle(repo, rev)
     if not ctx:
         raise error.InputError(
             _(b'no working directory: please specify a revision')
         )
     node = ctx.node()
     dest = cmdutil.makefilename(ctx, dest)
     if os.path.realpath(dest) == repo.root:
         raise error.InputError(_(b'repository root cannot be destination'))
 
     kind = opts.get(b'type') or archival.guesskind(dest) or b'files'
     prefix = opts.get(b'prefix')
 
     if dest == b'-':
         if kind == b'files':
             raise error.InputError(_(b'cannot archive plain files to stdout'))
         dest = cmdutil.makefileobj(ctx, dest)
         if not prefix:
             prefix = os.path.basename(repo.root) + b'-%h'
 
     prefix = cmdutil.makefilename(ctx, prefix)
     match = scmutil.match(ctx, [], opts)
     archival.archive(
         repo,
         dest,
         node,
         kind,
         not opts.get(b'no_decode'),
         match,
         prefix,
         subrepos=opts.get(b'subrepos'),
     )
 
 
 @command(
     b'backout',
     [
         (
             b'',
             b'merge',
             None,
             _(b'merge with old dirstate parent after backout'),
         ),
         (
             b'',
             b'commit',
             None,
             _(b'commit if no conflicts were encountered (DEPRECATED)'),
         ),
         (b'', b'no-commit', None, _(b'do not commit')),
         (
             b'',
             b'parent',
             b'',
             _(b'parent to choose when backing out merge (DEPRECATED)'),
             _(b'REV'),
         ),
         (b'r', b'rev', b'', _(b'revision to backout'), _(b'REV')),
         (b'e', b'edit', False, _(b'invoke editor on commit messages')),
     ]
     + mergetoolopts
     + walkopts
     + commitopts
     + commitopts2,
     _(b'[OPTION]... [-r] REV'),
     helpcategory=command.CATEGORY_CHANGE_MANAGEMENT,
 )
 def backout(ui, repo, node=None, rev=None, **opts):
     """reverse effect of earlier changeset
 
     Prepare a new changeset with the effect of REV undone in the
     current working directory. If no conflicts were encountered,
     it will be committed immediately.
 
     If REV is the parent of the working directory, then this new changeset
     is committed automatically (unless --no-commit is specified).
 
     .. note::
 
        :hg:`backout` cannot be used to fix either an unwanted or
        incorrect merge.
 
     .. container:: verbose
 
       Examples:
 
       - Reverse the effect of the parent of the working directory.
         This backout will be committed immediately::
 
           hg backout -r .
 
       - Reverse the effect of previous bad revision 23::
 
           hg backout -r 23
 
       - Reverse the effect of previous bad revision 23 and
         leave changes uncommitted::
 
           hg backout -r 23 --no-commit
           hg commit -m "Backout revision 23"
 
       By default, the pending changeset will have one parent,
       maintaining a linear history. With --merge, the pending
       changeset will instead have two parents: the old parent of the
       working directory and a new child of REV that simply undoes REV.
 
       Before version 1.7, the behavior without --merge was equivalent
       to specifying --merge followed by :hg:`update --clean .` to
       cancel the merge and leave the child of REV as a head to be
       merged separately.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     See :hg:`help revert` for a way to restore files to the state
     of another revision.
 
     Returns 0 on success, 1 if nothing to backout or there are unresolved
     files.
     """
     with repo.wlock(), repo.lock():
         return _dobackout(ui, repo, node, rev, **opts)
 
 
 def _dobackout(ui, repo, node=None, rev=None, **opts):
     cmdutil.check_incompatible_arguments(opts, 'no_commit', ['commit', 'merge'])
     opts = pycompat.byteskwargs(opts)
 
     if rev and node:
         raise error.InputError(_(b"please specify just one revision"))
 
     if not rev:
         rev = node
 
     if not rev:
         raise error.InputError(_(b"please specify a revision to backout"))
 
     date = opts.get(b'date')
     if date:
         opts[b'date'] = dateutil.parsedate(date)
 
     cmdutil.checkunfinished(repo)
     cmdutil.bailifchanged(repo)
     ctx = scmutil.revsingle(repo, rev)
     node = ctx.node()
 
     op1, op2 = repo.dirstate.parents()
     if not repo.changelog.isancestor(node, op1):
         raise error.InputError(
             _(b'cannot backout change that is not an ancestor')
         )
 
     p1, p2 = repo.changelog.parents(node)
     if p1 == repo.nullid:
         raise error.InputError(_(b'cannot backout a change with no parents'))
     if p2 != repo.nullid:
         if not opts.get(b'parent'):
             raise error.InputError(_(b'cannot backout a merge changeset'))
         p = repo.lookup(opts[b'parent'])
         if p not in (p1, p2):
             raise error.InputError(
                 _(b'%s is not a parent of %s') % (short(p), short(node))
             )
         parent = p
     else:
         if opts.get(b'parent'):
             raise error.InputError(
                 _(b'cannot use --parent on non-merge changeset')
             )
         parent = p1
 
     # the backout should appear on the same branch
     branch = repo.dirstate.branch()
     bheads = repo.branchheads(branch)
     rctx = scmutil.revsingle(repo, hex(parent))
     if not opts.get(b'merge') and op1 != node:
         with dirstateguard.dirstateguard(repo, b'backout'):
             overrides = {(b'ui', b'forcemerge'): opts.get(b'tool', b'')}
             with ui.configoverride(overrides, b'backout'):
                 stats = mergemod.back_out(ctx, parent=repo[parent])
             repo.setparents(op1, op2)
         hg._showstats(repo, stats)
         if stats.unresolvedcount:
             repo.ui.status(
                 _(b"use 'hg resolve' to retry unresolved file merges\n")
             )
             return 1
     else:
         hg.clean(repo, node, show_stats=False)
         repo.dirstate.setbranch(branch)
         cmdutil.revert(ui, repo, rctx)
 
     if opts.get(b'no_commit'):
         msg = _(b"changeset %s backed out, don't forget to commit.\n")
         ui.status(msg % short(node))
         return 0
 
     def commitfunc(ui, repo, message, match, opts):
         editform = b'backout'
         e = cmdutil.getcommiteditor(
             editform=editform, **pycompat.strkwargs(opts)
         )
         if not message:
             # we don't translate commit messages
             message = b"Backed out changeset %s" % short(node)
             e = cmdutil.getcommiteditor(edit=True, editform=editform)
         return repo.commit(
             message, opts.get(b'user'), opts.get(b'date'), match, editor=e
         )
 
     # save to detect changes
     tip = repo.changelog.tip()
 
     newnode = cmdutil.commit(ui, repo, commitfunc, [], opts)
     if not newnode:
         ui.status(_(b"nothing changed\n"))
         return 1
     cmdutil.commitstatus(repo, newnode, branch, bheads, tip)
 
     def nice(node):
         return b'%d:%s' % (repo.changelog.rev(node), short(node))
 
     ui.status(
         _(b'changeset %s backs out changeset %s\n')
         % (nice(newnode), nice(node))
     )
     if opts.get(b'merge') and op1 != node:
         hg.clean(repo, op1, show_stats=False)
         ui.status(_(b'merging with changeset %s\n') % nice(newnode))
         overrides = {(b'ui', b'forcemerge'): opts.get(b'tool', b'')}
         with ui.configoverride(overrides, b'backout'):
             return hg.merge(repo[b'tip'])
     return 0
 
 
 @command(
     b'bisect',
     [
         (b'r', b'reset', False, _(b'reset bisect state')),
         (b'g', b'good', False, _(b'mark changeset good')),
         (b'b', b'bad', False, _(b'mark changeset bad')),
         (b's', b'skip', False, _(b'skip testing changeset')),
         (b'e', b'extend', False, _(b'extend the bisect range')),
         (
             b'c',
             b'command',
             b'',
             _(b'use command to check changeset state'),
             _(b'CMD'),
         ),
         (b'U', b'noupdate', False, _(b'do not update to target')),
     ],
     _(b"[-gbsr] [-U] [-c CMD] [REV]"),
     helpcategory=command.CATEGORY_CHANGE_NAVIGATION,
 )
 def bisect(
     ui,
     repo,
     positional_1=None,
     positional_2=None,
     command=None,
     reset=None,
     good=None,
     bad=None,
     skip=None,
     extend=None,
     noupdate=None,
 ):
     """subdivision search of changesets
 
     This command helps to find changesets which introduce problems. To
     use, mark the earliest changeset you know exhibits the problem as
     bad, then mark the latest changeset which is free from the problem
     as good. Bisect will update your working directory to a revision
     for testing (unless the -U/--noupdate option is specified). Once
     you have performed tests, mark the working directory as good or
     bad, and bisect will either update to another candidate changeset
     or announce that it has found the bad revision.
 
     As a shortcut, you can also use the revision argument to mark a
     revision as good or bad without checking it out first.
 
     If you supply a command, it will be used for automatic bisection.
     The environment variable HG_NODE will contain the ID of the
     changeset being tested. The exit status of the command will be
     used to mark revisions as good or bad: status 0 means good, 125
     means to skip the revision, 127 (command not found) will abort the
     bisection, and any other non-zero exit status means the revision
     is bad.
 
     .. container:: verbose
 
       Some examples:
 
       - start a bisection with known bad revision 34, and good revision 12::
 
           hg bisect --bad 34
           hg bisect --good 12
 
       - advance the current bisection by marking current revision as good or
         bad::
 
           hg bisect --good
           hg bisect --bad
 
       - mark the current revision, or a known revision, to be skipped (e.g. if
         that revision is not usable because of another issue)::
 
           hg bisect --skip
           hg bisect --skip 23
 
       - skip all revisions that do not touch directories ``foo`` or ``bar``::
 
           hg bisect --skip "!( file('path:foo') & file('path:bar') )"
 
       - forget the current bisection::
 
           hg bisect --reset
 
       - use 'make && make tests' to automatically find the first broken
         revision::
 
           hg bisect --reset
           hg bisect --bad 34
           hg bisect --good 12
           hg bisect --command "make && make tests"
 
       - see all changesets whose states are already known in the current
         bisection::
 
           hg log -r "bisect(pruned)"
 
       - see the changeset currently being bisected (especially useful
         if running with -U/--noupdate)::
 
           hg log -r "bisect(current)"
 
       - see all changesets that took part in the current bisection::
 
           hg log -r "bisect(range)"
 
       - you can even get a nice graph::
 
           hg log --graph -r "bisect(range)"
 
       See :hg:`help revisions.bisect` for more about the `bisect()` predicate.
 
     Returns 0 on success.
     """
     rev = []
     # backward compatibility
     if positional_1 in (b"good", b"bad", b"reset", b"init"):
         ui.warn(_(b"(use of 'hg bisect <cmd>' is deprecated)\n"))
         cmd = positional_1
         rev.append(positional_2)
         if cmd == b"good":
             good = True
         elif cmd == b"bad":
             bad = True
         else:
             reset = True
     elif positional_2:
         raise error.InputError(_(b'incompatible arguments'))
     elif positional_1 is not None:
         rev.append(positional_1)
 
     incompatibles = {
         b'--bad': bad,
         b'--command': bool(command),
         b'--extend': extend,
         b'--good': good,
         b'--reset': reset,
         b'--skip': skip,
     }
 
     enabled = [x for x in incompatibles if incompatibles[x]]
 
     if len(enabled) > 1:
         raise error.InputError(
             _(b'%s and %s are incompatible') % tuple(sorted(enabled)[0:2])
         )
 
     if reset:
         hbisect.resetstate(repo)
         return
 
     state = hbisect.load_state(repo)
 
     if rev:
         nodes = [repo[i].node() for i in scmutil.revrange(repo, rev)]
     else:
         nodes = [repo.lookup(b'.')]
 
     # update state
     if good or bad or skip:
         if good:
             state[b'good'] += nodes
         elif bad:
             state[b'bad'] += nodes
         elif skip:
             state[b'skip'] += nodes
         hbisect.save_state(repo, state)
         if not (state[b'good'] and state[b'bad']):
             return
 
     def mayupdate(repo, node, show_stats=True):
         """common used update sequence"""
         if noupdate:
             return
         cmdutil.checkunfinished(repo)
         cmdutil.bailifchanged(repo)
         return hg.clean(repo, node, show_stats=show_stats)
 
     displayer = logcmdutil.changesetdisplayer(ui, repo, {})
 
     if command:
         changesets = 1
         if noupdate:
             try:
                 node = state[b'current'][0]
             except LookupError:
                 raise error.StateError(
                     _(
                         b'current bisect revision is unknown - '
                         b'start a new bisect to fix'
                     )
                 )
         else:
             node, p2 = repo.dirstate.parents()
             if p2 != repo.nullid:
                 raise error.StateError(_(b'current bisect revision is a merge'))
         if rev:
             if not nodes:
-                raise error.Abort(_(b'empty revision set'))
+                raise error.InputError(_(b'empty revision set'))
             node = repo[nodes[-1]].node()
         with hbisect.restore_state(repo, state, node):
             while changesets:
                 # update state
                 state[b'current'] = [node]
                 hbisect.save_state(repo, state)
                 status = ui.system(
                     command,
                     environ={b'HG_NODE': hex(node)},
                     blockedtag=b'bisect_check',
                 )
                 if status == 125:
                     transition = b"skip"
                 elif status == 0:
                     transition = b"good"
                 # status < 0 means process was killed
                 elif status == 127:
                     raise error.Abort(_(b"failed to execute %s") % command)
                 elif status < 0:
                     raise error.Abort(_(b"%s killed") % command)
                 else:
                     transition = b"bad"
                 state[transition].append(node)
                 ctx = repo[node]
                 summary = cmdutil.format_changeset_summary(ui, ctx, b'bisect')
                 ui.status(_(b'changeset %s: %s\n') % (summary, transition))
                 hbisect.checkstate(state)
                 # bisect
                 nodes, changesets, bgood = hbisect.bisect(repo, state)
                 # update to next check
                 node = nodes[0]
                 mayupdate(repo, node, show_stats=False)
         hbisect.printresult(ui, repo, state, displayer, nodes, bgood)
         return
 
     hbisect.checkstate(state)
 
     # actually bisect
     nodes, changesets, good = hbisect.bisect(repo, state)
     if extend:
         if not changesets:
             extendctx = hbisect.extendrange(repo, state, nodes, good)
             if extendctx is not None:
                 ui.write(
                     _(b"Extending search to changeset %s\n")
                     % cmdutil.format_changeset_summary(ui, extendctx, b'bisect')
                 )
                 state[b'current'] = [extendctx.node()]
                 hbisect.save_state(repo, state)
                 return mayupdate(repo, extendctx.node())
         raise error.StateError(_(b"nothing to extend"))
 
     if changesets == 0:
         hbisect.printresult(ui, repo, state, displayer, nodes, good)
     else:
         assert len(nodes) == 1  # only a single node can be tested next
         node = nodes[0]
         # compute the approximate number of remaining tests
         tests, size = 0, 2
         while size <= changesets:
             tests, size = tests + 1, size * 2
         rev = repo.changelog.rev(node)
         summary = cmdutil.format_changeset_summary(ui, repo[rev], b'bisect')
         ui.write(
             _(
                 b"Testing changeset %s "
                 b"(%d changesets remaining, ~%d tests)\n"
             )
             % (summary, changesets, tests)
         )
         state[b'current'] = [node]
         hbisect.save_state(repo, state)
         return mayupdate(repo, node)
 
 
 @command(
     b'bookmarks|bookmark',
     [
         (b'f', b'force', False, _(b'force')),
         (b'r', b'rev', b'', _(b'revision for bookmark action'), _(b'REV')),
         (b'd', b'delete', False, _(b'delete a given bookmark')),
         (b'm', b'rename', b'', _(b'rename a given bookmark'), _(b'OLD')),
         (b'i', b'inactive', False, _(b'mark a bookmark inactive')),
         (b'l', b'list', False, _(b'list existing bookmarks')),
     ]
     + formatteropts,
     _(b'hg bookmarks [OPTIONS]... [NAME]...'),
     helpcategory=command.CATEGORY_CHANGE_ORGANIZATION,
 )
 def bookmark(ui, repo, *names, **opts):
     """create a new bookmark or list existing bookmarks
 
     Bookmarks are labels on changesets to help track lines of development.
     Bookmarks are unversioned and can be moved, renamed and deleted.
     Deleting or moving a bookmark has no effect on the associated changesets.
 
     Creating or updating to a bookmark causes it to be marked as 'active'.
     The active bookmark is indicated with a '*'.
     When a commit is made, the active bookmark will advance to the new commit.
     A plain :hg:`update` will also advance an active bookmark, if possible.
     Updating away from a bookmark will cause it to be deactivated.
 
     Bookmarks can be pushed and pulled between repositories (see
     :hg:`help push` and :hg:`help pull`). If a shared bookmark has
     diverged, a new 'divergent bookmark' of the form 'name@path' will
     be created. Using :hg:`merge` will resolve the divergence.
 
     Specifying bookmark as '.' to -m/-d/-l options is equivalent to specifying
     the active bookmark's name.
 
     A bookmark named '@' has the special property that :hg:`clone` will
     check it out by default if it exists.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions such as ``{bookmark}``. See also
       :hg:`help templates`.
 
       :active:  Boolean. True if the bookmark is active.
 
       Examples:
 
       - create an active bookmark for a new line of development::
 
           hg book new-feature
 
       - create an inactive bookmark as a place marker::
 
           hg book -i reviewed
 
       - create an inactive bookmark on another changeset::
 
           hg book -r .^ tested
 
       - rename bookmark turkey to dinner::
 
           hg book -m turkey dinner
 
       - move the '@' bookmark from another branch::
 
           hg book -f @
 
       - print only the active bookmark name::
 
           hg book -ql .
     """
     opts = pycompat.byteskwargs(opts)
     force = opts.get(b'force')
     rev = opts.get(b'rev')
     inactive = opts.get(b'inactive')  # meaning add/rename to inactive bookmark
 
     action = cmdutil.check_at_most_one_arg(opts, b'delete', b'rename', b'list')
     if action:
         cmdutil.check_incompatible_arguments(opts, action, [b'rev'])
     elif names or rev:
         action = b'add'
     elif inactive:
         action = b'inactive'  # meaning deactivate
     else:
         action = b'list'
 
     cmdutil.check_incompatible_arguments(
         opts, b'inactive', [b'delete', b'list']
     )
     if not names and action in {b'add', b'delete'}:
         raise error.InputError(_(b"bookmark name required"))
 
     if action in {b'add', b'delete', b'rename', b'inactive'}:
         with repo.wlock(), repo.lock(), repo.transaction(b'bookmark') as tr:
             if action == b'delete':
                 names = pycompat.maplist(repo._bookmarks.expandname, names)
                 bookmarks.delete(repo, tr, names)
             elif action == b'rename':
                 if not names:
                     raise error.InputError(_(b"new bookmark name required"))
                 elif len(names) > 1:
                     raise error.InputError(
                         _(b"only one new bookmark name allowed")
                     )
                 oldname = repo._bookmarks.expandname(opts[b'rename'])
                 bookmarks.rename(repo, tr, oldname, names[0], force, inactive)
             elif action == b'add':
                 bookmarks.addbookmarks(repo, tr, names, rev, force, inactive)
             elif action == b'inactive':
                 if len(repo._bookmarks) == 0:
                     ui.status(_(b"no bookmarks set\n"))
                 elif not repo._activebookmark:
                     ui.status(_(b"no active bookmark\n"))
                 else:
                     bookmarks.deactivate(repo)
     elif action == b'list':
         names = pycompat.maplist(repo._bookmarks.expandname, names)
         with ui.formatter(b'bookmarks', opts) as fm:
             bookmarks.printbookmarks(ui, repo, fm, names)
     else:
         raise error.ProgrammingError(b'invalid action: %s' % action)
 
 
 @command(
     b'branch',
     [
         (
             b'f',
             b'force',
             None,
             _(b'set branch name even if it shadows an existing branch'),
         ),
         (b'C', b'clean', None, _(b'reset branch name to parent branch name')),
         (
             b'r',
             b'rev',
             [],
             _(b'change branches of the given revs (EXPERIMENTAL)'),
         ),
     ],
     _(b'[-fC] [NAME]'),
     helpcategory=command.CATEGORY_CHANGE_ORGANIZATION,
 )
 def branch(ui, repo, label=None, **opts):
     """set or show the current branch name
 
     .. note::
 
        Branch names are permanent and global. Use :hg:`bookmark` to create a
        light-weight bookmark instead. See :hg:`help glossary` for more
        information about named branches and bookmarks.
 
     With no argument, show the current branch name. With one argument,
     set the working directory branch name (the branch will not exist
     in the repository until the next commit). Standard practice
     recommends that primary development take place on the 'default'
     branch.
 
     Unless -f/--force is specified, branch will not let you set a
     branch name that already exists.
 
     Use -C/--clean to reset the working directory branch to that of
     the parent of the working directory, negating a previous branch
     change.
 
     Use the command :hg:`update` to switch to an existing branch. Use
     :hg:`commit --close-branch` to mark this branch head as closed.
     When all heads of a branch are closed, the branch will be
     considered closed.
 
     Returns 0 on success.
     """
     opts = pycompat.byteskwargs(opts)
     revs = opts.get(b'rev')
     if label:
         label = label.strip()
 
     if not opts.get(b'clean') and not label:
         if revs:
             raise error.InputError(
                 _(b"no branch name specified for the revisions")
             )
         ui.write(b"%s\n" % repo.dirstate.branch())
         return
 
     with repo.wlock():
         if opts.get(b'clean'):
             label = repo[b'.'].branch()
             repo.dirstate.setbranch(label)
             ui.status(_(b'reset working directory to branch %s\n') % label)
         elif label:
 
             scmutil.checknewlabel(repo, label, b'branch')
             if revs:
                 return cmdutil.changebranch(ui, repo, revs, label, opts)
 
             if not opts.get(b'force') and label in repo.branchmap():
                 if label not in [p.branch() for p in repo[None].parents()]:
                     raise error.InputError(
                         _(b'a branch of the same name already exists'),
                         # i18n: "it" refers to an existing branch
                         hint=_(b"use 'hg update' to switch to it"),
                     )
 
             repo.dirstate.setbranch(label)
             ui.status(_(b'marked working directory as branch %s\n') % label)
 
             # find any open named branches aside from default
             for n, h, t, c in repo.branchmap().iterbranches():
                 if n != b"default" and not c:
                     return 0
             ui.status(
                 _(
                     b'(branches are permanent and global, '
                     b'did you want a bookmark?)\n'
                 )
             )
 
 
 @command(
     b'branches',
     [
         (
             b'a',
             b'active',
             False,
             _(b'show only branches that have unmerged heads (DEPRECATED)'),
         ),
         (b'c', b'closed', False, _(b'show normal and closed branches')),
         (b'r', b'rev', [], _(b'show branch name(s) of the given rev')),
     ]
     + formatteropts,
     _(b'[-c]'),
     helpcategory=command.CATEGORY_CHANGE_ORGANIZATION,
     intents={INTENT_READONLY},
 )
 def branches(ui, repo, active=False, closed=False, **opts):
     """list repository named branches
 
     List the repository's named branches, indicating which ones are
     inactive. If -c/--closed is specified, also list branches which have
     been marked closed (see :hg:`commit --close-branch`).
 
     Use the command :hg:`update` to switch to an existing branch.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions such as ``{branch}``. See also
       :hg:`help templates`.
 
       :active:  Boolean. True if the branch is active.
       :closed:  Boolean. True if the branch is closed.
       :current: Boolean. True if it is the current branch.
 
     Returns 0.
     """
 
     opts = pycompat.byteskwargs(opts)
     revs = opts.get(b'rev')
     selectedbranches = None
     if revs:
         revs = scmutil.revrange(repo, revs)
         getbi = repo.revbranchcache().branchinfo
         selectedbranches = {getbi(r)[0] for r in revs}
 
     ui.pager(b'branches')
     fm = ui.formatter(b'branches', opts)
     hexfunc = fm.hexfunc
 
     allheads = set(repo.heads())
     branches = []
     for tag, heads, tip, isclosed in repo.branchmap().iterbranches():
         if selectedbranches is not None and tag not in selectedbranches:
             continue
         isactive = False
         if not isclosed:
             openheads = set(repo.branchmap().iteropen(heads))
             isactive = bool(openheads & allheads)
         branches.append((tag, repo[tip], isactive, not isclosed))
     branches.sort(key=lambda i: (i[2], i[1].rev(), i[0], i[3]), reverse=True)
 
     for tag, ctx, isactive, isopen in branches:
         if active and not isactive:
             continue
         if isactive:
             label = b'branches.active'
             notice = b''
         elif not isopen:
             if not closed:
                 continue
             label = b'branches.closed'
             notice = _(b' (closed)')
         else:
             label = b'branches.inactive'
             notice = _(b' (inactive)')
         current = tag == repo.dirstate.branch()
         if current:
             label = b'branches.current'
 
         fm.startitem()
         fm.write(b'branch', b'%s', tag, label=label)
         rev = ctx.rev()
         padsize = max(31 - len(b"%d" % rev) - encoding.colwidth(tag), 0)
         fmt = b' ' * padsize + b' %d:%s'
         fm.condwrite(
             not ui.quiet,
             b'rev node',
             fmt,
             rev,
             hexfunc(ctx.node()),
             label=b'log.changeset changeset.%s' % ctx.phasestr(),
         )
         fm.context(ctx=ctx)
         fm.data(active=isactive, closed=not isopen, current=current)
         if not ui.quiet:
             fm.plain(notice)
         fm.plain(b'\n')
     fm.end()
 
 
 @command(
     b'bundle',
     [
         (
             b'f',
             b'force',
             None,
             _(b'run even when the destination is unrelated'),
         ),
         (
             b'r',
             b'rev',
             [],
             _(b'a changeset intended to be added to the destination'),
             _(b'REV'),
         ),
         (
             b'b',
             b'branch',
             [],
             _(b'a specific branch you would like to bundle'),
             _(b'BRANCH'),
         ),
         (
             b'',
             b'base',
             [],
             _(b'a base changeset assumed to be available at the destination'),
             _(b'REV'),
         ),
         (b'a', b'all', None, _(b'bundle all changesets in the repository')),
         (
             b't',
             b'type',
             b'bzip2',
             _(b'bundle compression type to use'),
             _(b'TYPE'),
         ),
     ]
     + remoteopts,
     _(b'[-f] [-t BUNDLESPEC] [-a] [-r REV]... [--base REV]... FILE [DEST]...'),
     helpcategory=command.CATEGORY_IMPORT_EXPORT,
 )
 def bundle(ui, repo, fname, *dests, **opts):
     """create a bundle file
 
     Generate a bundle file containing data to be transferred to another
     repository.
 
     To create a bundle containing all changesets, use -a/--all
     (or --base null). Otherwise, hg assumes the destination will have
     all the nodes you specify with --base parameters. Otherwise, hg
     will assume the repository has all the nodes in destination, or
     default-push/default if no destination is specified, where destination
     is the repositories you provide through DEST option.
 
     You can change bundle format with the -t/--type option. See
     :hg:`help bundlespec` for documentation on this format. By default,
     the most appropriate format is used and compression defaults to
     bzip2.
 
     The bundle file can then be transferred using conventional means
     and applied to another repository with the unbundle or pull
     command. This is useful when direct push and pull are not
     available or when exporting an entire repository is undesirable.
 
     Applying bundles preserves all changeset contents including
     permissions, copy/rename information, and revision history.
 
     Returns 0 on success, 1 if no changes found.
     """
     opts = pycompat.byteskwargs(opts)
     revs = None
     if b'rev' in opts:
         revstrings = opts[b'rev']
         revs = scmutil.revrange(repo, revstrings)
         if revstrings and not revs:
             raise error.InputError(_(b'no commits to bundle'))
 
     bundletype = opts.get(b'type', b'bzip2').lower()
     try:
         bundlespec = bundlecaches.parsebundlespec(
             repo, bundletype, strict=False
         )
     except error.UnsupportedBundleSpecification as e:
         raise error.InputError(
             pycompat.bytestr(e),
             hint=_(b"see 'hg help bundlespec' for supported values for --type"),
         )
     cgversion = bundlespec.contentopts[b"cg.version"]
 
     # Packed bundles are a pseudo bundle format for now.
     if cgversion == b's1':
         raise error.InputError(
             _(b'packed bundles cannot be produced by "hg bundle"'),
             hint=_(b"use 'hg debugcreatestreamclonebundle'"),
         )
 
     if opts.get(b'all'):
         if dests:
             raise error.InputError(
                 _(b"--all is incompatible with specifying destinations")
             )
         if opts.get(b'base'):
             ui.warn(_(b"ignoring --base because --all was specified\n"))
         base = [nullrev]
     else:
         base = scmutil.revrange(repo, opts.get(b'base'))
     if cgversion not in changegroup.supportedoutgoingversions(repo):
         raise error.Abort(
             _(b"repository does not support bundle version %s") % cgversion
         )
 
     if base:
         if dests:
             raise error.InputError(
                 _(b"--base is incompatible with specifying destinations")
             )
         common = [repo[rev].node() for rev in base]
         heads = [repo[r].node() for r in revs] if revs else None
         outgoing = discovery.outgoing(repo, common, heads)
         missing = outgoing.missing
         excluded = outgoing.excluded
     else:
         missing = set()
         excluded = set()
         for path in urlutil.get_push_paths(repo, ui, dests):
             other = hg.peer(repo, opts, path.rawloc)
             if revs is not None:
                 hex_revs = [repo[r].hex() for r in revs]
             else:
                 hex_revs = None
             branches = (path.branch, [])
             head_revs, checkout = hg.addbranchrevs(
                 repo, repo, branches, hex_revs
             )
             heads = (
                 head_revs
                 and pycompat.maplist(repo.lookup, head_revs)
                 or head_revs
             )
             outgoing = discovery.findcommonoutgoing(
                 repo,
                 other,
                 onlyheads=heads,
                 force=opts.get(b'force'),
                 portable=True,
             )
             missing.update(outgoing.missing)
             excluded.update(outgoing.excluded)
 
     if not missing:
         scmutil.nochangesfound(ui, repo, not base and excluded)
         return 1
 
     if heads:
         outgoing = discovery.outgoing(
             repo, missingroots=missing, ancestorsof=heads
         )
     else:
         outgoing = discovery.outgoing(repo, missingroots=missing)
     outgoing.excluded = sorted(excluded)
 
     if cgversion == b'01':  # bundle1
         bversion = b'HG10' + bundlespec.wirecompression
         bcompression = None
     elif cgversion in (b'02', b'03'):
         bversion = b'HG20'
         bcompression = bundlespec.wirecompression
     else:
         raise error.ProgrammingError(
             b'bundle: unexpected changegroup version %s' % cgversion
         )
 
     # TODO compression options should be derived from bundlespec parsing.
     # This is a temporary hack to allow adjusting bundle compression
     # level without a) formalizing the bundlespec changes to declare it
     # b) introducing a command flag.
     compopts = {}
     complevel = ui.configint(
         b'experimental', b'bundlecomplevel.' + bundlespec.compression
     )
     if complevel is None:
         complevel = ui.configint(b'experimental', b'bundlecomplevel')
     if complevel is not None:
         compopts[b'level'] = complevel
 
     compthreads = ui.configint(
         b'experimental', b'bundlecompthreads.' + bundlespec.compression
     )
     if compthreads is None:
         compthreads = ui.configint(b'experimental', b'bundlecompthreads')
     if compthreads is not None:
         compopts[b'threads'] = compthreads
 
     # Bundling of obsmarker and phases is optional as not all clients
     # support the necessary features.
     cfg = ui.configbool
     contentopts = {
         b'obsolescence': cfg(b'experimental', b'evolution.bundle-obsmarker'),
         b'obsolescence-mandatory': cfg(
             b'experimental', b'evolution.bundle-obsmarker:mandatory'
         ),
         b'phases': cfg(b'experimental', b'bundle-phases'),
     }
     bundlespec.contentopts.update(contentopts)
 
     bundle2.writenewbundle(
         ui,
         repo,
         b'bundle',
         fname,
         bversion,
         outgoing,
         bundlespec.contentopts,
         compression=bcompression,
         compopts=compopts,
     )
 
 
 @command(
     b'cat',
     [
         (
             b'o',
             b'output',
             b'',
             _(b'print output to file with formatted name'),
             _(b'FORMAT'),
         ),
         (b'r', b'rev', b'', _(b'print the given revision'), _(b'REV')),
         (b'', b'decode', None, _(b'apply any matching decode filter')),
     ]
     + walkopts
     + formatteropts,
     _(b'[OPTION]... FILE...'),
     helpcategory=command.CATEGORY_FILE_CONTENTS,
     inferrepo=True,
     intents={INTENT_READONLY},
 )
 def cat(ui, repo, file1, *pats, **opts):
     """output the current or given revision of files
 
     Print the specified files as they were at the given revision. If
     no revision is given, the parent of the working directory is used.
 
     Output may be to a file, in which case the name of the file is
     given using a template string. See :hg:`help templates`. In addition
     to the common template keywords, the following formatting rules are
     supported:
 
     :``%%``: literal "%" character
     :``%s``: basename of file being printed
     :``%d``: dirname of file being printed, or '.' if in repository root
     :``%p``: root-relative path name of file being printed
     :``%H``: changeset hash (40 hexadecimal digits)
     :``%R``: changeset revision number
     :``%h``: short-form changeset hash (12 hexadecimal digits)
     :``%r``: zero-padded changeset revision number
     :``%b``: basename of the exporting repository
     :``\\``: literal "\\" character
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions. See also :hg:`help templates`.
 
       :data:    String. File content.
       :path:    String. Repository-absolute path of the file.
 
     Returns 0 on success.
     """
     opts = pycompat.byteskwargs(opts)
     rev = opts.get(b'rev')
     if rev:
         repo = scmutil.unhidehashlikerevs(repo, [rev], b'nowarn')
     ctx = scmutil.revsingle(repo, rev)
     m = scmutil.match(ctx, (file1,) + pats, opts)
     fntemplate = opts.pop(b'output', b'')
     if cmdutil.isstdiofilename(fntemplate):
         fntemplate = b''
 
     if fntemplate:
         fm = formatter.nullformatter(ui, b'cat', opts)
     else:
         ui.pager(b'cat')
         fm = ui.formatter(b'cat', opts)
     with fm:
         return cmdutil.cat(
             ui, repo, ctx, m, fm, fntemplate, b'', **pycompat.strkwargs(opts)
         )
 
 
 @command(
     b'clone',
     [
         (
             b'U',
             b'noupdate',
             None,
             _(
                 b'the clone will include an empty working '
                 b'directory (only a repository)'
             ),
         ),
         (
             b'u',
             b'updaterev',
             b'',
             _(b'revision, tag, or branch to check out'),
             _(b'REV'),
         ),
         (
             b'r',
             b'rev',
             [],
             _(
                 b'do not clone everything, but include this changeset'
                 b' and its ancestors'
             ),
             _(b'REV'),
         ),
         (
             b'b',
             b'branch',
             [],
             _(
                 b'do not clone everything, but include this branch\'s'
                 b' changesets and their ancestors'
             ),
             _(b'BRANCH'),
         ),
         (b'', b'pull', None, _(b'use pull protocol to copy metadata')),
         (b'', b'uncompressed', None, _(b'an alias to --stream (DEPRECATED)')),
         (b'', b'stream', None, _(b'clone with minimal data processing')),
     ]
     + remoteopts,
     _(b'[OPTION]... SOURCE [DEST]'),
     helpcategory=command.CATEGORY_REPO_CREATION,
     helpbasic=True,
     norepo=True,
 )
 def clone(ui, source, dest=None, **opts):
     """make a copy of an existing repository
 
     Create a copy of an existing repository in a new directory.
 
     If no destination directory name is specified, it defaults to the
     basename of the source.
 
     The location of the source is added to the new repository's
     ``.hg/hgrc`` file, as the default to be used for future pulls.
 
     Only local paths and ``ssh://`` URLs are supported as
     destinations. For ``ssh://`` destinations, no working directory or
     ``.hg/hgrc`` will be created on the remote side.
 
     If the source repository has a bookmark called '@' set, that
     revision will be checked out in the new repository by default.
 
     To check out a particular version, use -u/--update, or
     -U/--noupdate to create a clone with no working directory.
 
     To pull only a subset of changesets, specify one or more revisions
     identifiers with -r/--rev or branches with -b/--branch. The
     resulting clone will contain only the specified changesets and
     their ancestors. These options (or 'clone src#rev dest') imply
     --pull, even for local source repositories.
 
     In normal clone mode, the remote normalizes repository data into a common
     exchange format and the receiving end translates this data into its local
     storage format. --stream activates a different clone mode that essentially
     copies repository files from the remote with minimal data processing. This
     significantly reduces the CPU cost of a clone both remotely and locally.
     However, it often increases the transferred data size by 30-40%. This can
     result in substantially faster clones where I/O throughput is plentiful,
     especially for larger repositories. A side-effect of --stream clones is
     that storage settings and requirements on the remote are applied locally:
     a modern client may inherit legacy or inefficient storage used by the
     remote or a legacy Mercurial client may not be able to clone from a
     modern Mercurial remote.
 
     .. note::
 
        Specifying a tag will include the tagged changeset but not the
        changeset containing the tag.
 
     .. container:: verbose
 
       For efficiency, hardlinks are used for cloning whenever the
       source and destination are on the same filesystem (note this
       applies only to the repository data, not to the working
       directory). Some filesystems, such as AFS, implement hardlinking
       incorrectly, but do not report errors. In these cases, use the
       --pull option to avoid hardlinking.
 
       Mercurial will update the working directory to the first applicable
       revision from this list:
 
       a) null if -U or the source repository has no changesets
       b) if -u . and the source repository is local, the first parent of
          the source repository's working directory
       c) the changeset specified with -u (if a branch name, this means the
          latest head of that branch)
       d) the changeset specified with -r
       e) the tipmost head specified with -b
       f) the tipmost head specified with the url#branch source syntax
       g) the revision marked with the '@' bookmark, if present
       h) the tipmost head of the default branch
       i) tip
 
       When cloning from servers that support it, Mercurial may fetch
       pre-generated data from a server-advertised URL or inline from the
       same stream. When this is done, hooks operating on incoming changesets
       and changegroups may fire more than once, once for each pre-generated
       bundle and as well as for any additional remaining data. In addition,
       if an error occurs, the repository may be rolled back to a partial
       clone. This behavior may change in future releases.
       See :hg:`help -e clonebundles` for more.
 
       Examples:
 
       - clone a remote repository to a new directory named hg/::
 
           hg clone https://www.mercurial-scm.org/repo/hg/
 
       - create a lightweight local clone::
 
           hg clone project/ project-feature/
 
       - clone from an absolute path on an ssh server (note double-slash)::
 
           hg clone ssh://user@server//home/projects/alpha/
 
       - do a streaming clone while checking out a specified version::
 
           hg clone --stream http://server/repo -u 1.5
 
       - create a repository without changesets after a particular revision::
 
           hg clone -r 04e544 experimental/ good/
 
       - clone (and track) a particular named branch::
 
           hg clone https://www.mercurial-scm.org/repo/hg/#stable
 
     See :hg:`help urls` for details on specifying URLs.
 
     Returns 0 on success.
     """
     opts = pycompat.byteskwargs(opts)
     cmdutil.check_at_most_one_arg(opts, b'noupdate', b'updaterev')
 
     # --include/--exclude can come from narrow or sparse.
     includepats, excludepats = None, None
 
     # hg.clone() differentiates between None and an empty set. So make sure
     # patterns are sets if narrow is requested without patterns.
     if opts.get(b'narrow'):
         includepats = set()
         excludepats = set()
 
         if opts.get(b'include'):
             includepats = narrowspec.parsepatterns(opts.get(b'include'))
         if opts.get(b'exclude'):
             excludepats = narrowspec.parsepatterns(opts.get(b'exclude'))
 
     r = hg.clone(
         ui,
         opts,
         source,
         dest,
         pull=opts.get(b'pull'),
         stream=opts.get(b'stream') or opts.get(b'uncompressed'),
         revs=opts.get(b'rev'),
         update=opts.get(b'updaterev') or not opts.get(b'noupdate'),
         branch=opts.get(b'branch'),
         shareopts=opts.get(b'shareopts'),
         storeincludepats=includepats,
         storeexcludepats=excludepats,
         depth=opts.get(b'depth') or None,
     )
 
     return r is None
 
 
 @command(
     b'commit|ci',
     [
         (
             b'A',
             b'addremove',
             None,
             _(b'mark new/missing files as added/removed before committing'),
         ),
         (b'', b'close-branch', None, _(b'mark a branch head as closed')),
         (b'', b'amend', None, _(b'amend the parent of the working directory')),
         (b's', b'secret', None, _(b'use the secret phase for committing')),
         (b'e', b'edit', None, _(b'invoke editor on commit messages')),
         (
             b'',
             b'force-close-branch',
             None,
             _(b'forcibly close branch from a non-head changeset (ADVANCED)'),
         ),
         (b'i', b'interactive', None, _(b'use interactive mode')),
     ]
     + walkopts
     + commitopts
     + commitopts2
     + subrepoopts,
     _(b'[OPTION]... [FILE]...'),
     helpcategory=command.CATEGORY_COMMITTING,
     helpbasic=True,
     inferrepo=True,
 )
 def commit(ui, repo, *pats, **opts):
     """commit the specified files or all outstanding changes
 
     Commit changes to the given files into the repository. Unlike a
     centralized SCM, this operation is a local operation. See
     :hg:`push` for a way to actively distribute your changes.
 
     If a list of files is omitted, all changes reported by :hg:`status`
     will be committed.
 
     If you are committing the result of a merge, do not provide any
     filenames or -I/-X filters.
 
     If no commit message is specified, Mercurial starts your
     configured editor where you can enter a message. In case your
     commit fails, you will find a backup of your message in
     ``.hg/last-message.txt``.
 
     The --close-branch flag can be used to mark the current branch
     head closed. When all heads of a branch are closed, the branch
     will be considered closed and no longer listed.
 
     The --amend flag can be used to amend the parent of the
     working directory with a new commit that contains the changes
     in the parent in addition to those currently reported by :hg:`status`,
     if there are any. The old commit is stored in a backup bundle in
     ``.hg/strip-backup`` (see :hg:`help bundle` and :hg:`help unbundle`
     on how to restore it).
 
     Message, user and date are taken from the amended commit unless
     specified. When a message isn't specified on the command line,
     the editor will open with the message of the amended commit.
 
     It is not possible to amend public changesets (see :hg:`help phases`)
     or changesets that have children.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     Returns 0 on success, 1 if nothing changed.
 
     .. container:: verbose
 
       Examples:
 
       - commit all files ending in .py::
 
           hg commit --include "set:**.py"
 
       - commit all non-binary files::
 
           hg commit --exclude "set:binary()"
 
       - amend the current commit and set the date to now::
 
           hg commit --amend --date now
     """
     with repo.wlock(), repo.lock():
         return _docommit(ui, repo, *pats, **opts)
 
 
 def _docommit(ui, repo, *pats, **opts):
     if opts.get('interactive'):
         opts.pop('interactive')
         ret = cmdutil.dorecord(
             ui, repo, commit, None, False, cmdutil.recordfilter, *pats, **opts
         )
         # ret can be 0 (no changes to record) or the value returned by
         # commit(), 1 if nothing changed or None on success.
         return 1 if ret == 0 else ret
 
     if opts.get('subrepos'):
         cmdutil.check_incompatible_arguments(opts, 'subrepos', ['amend'])
         # Let --subrepos on the command line override config setting.
         ui.setconfig(b'ui', b'commitsubrepos', True, b'commit')
 
     cmdutil.checkunfinished(repo, commit=True)
 
     branch = repo[None].branch()
     bheads = repo.branchheads(branch)
     tip = repo.changelog.tip()
 
     extra = {}
     if opts.get('close_branch') or opts.get('force_close_branch'):
         extra[b'close'] = b'1'
 
         if repo[b'.'].closesbranch():
             raise error.InputError(
                 _(b'current revision is already a branch closing head')
             )
         elif not bheads:
             raise error.InputError(
                 _(b'branch "%s" has no heads to close') % branch
             )
         elif (
             branch == repo[b'.'].branch()
             and repo[b'.'].node() not in bheads
             and not opts.get('force_close_branch')
         ):
             hint = _(
                 b'use --force-close-branch to close branch from a non-head'
                 b' changeset'
             )
             raise error.InputError(_(b'can only close branch heads'), hint=hint)
         elif opts.get('amend'):
             if (
                 repo[b'.'].p1().branch() != branch
                 and repo[b'.'].p2().branch() != branch
             ):
                 raise error.InputError(_(b'can only close branch heads'))
 
     if opts.get('amend'):
         if ui.configbool(b'ui', b'commitsubrepos'):
             raise error.InputError(
                 _(b'cannot amend with ui.commitsubrepos enabled')
             )
 
         old = repo[b'.']
         rewriteutil.precheck(repo, [old.rev()], b'amend')
 
         # Currently histedit gets confused if an amend happens while histedit
         # is in progress. Since we have a checkunfinished command, we are
         # temporarily honoring it.
         #
         # Note: eventually this guard will be removed. Please do not expect
         # this behavior to remain.
         if not obsolete.isenabled(repo, obsolete.createmarkersopt):
             cmdutil.checkunfinished(repo)
 
         node = cmdutil.amend(ui, repo, old, extra, pats, opts)
         opts = pycompat.byteskwargs(opts)
         if node == old.node():
             ui.status(_(b"nothing changed\n"))
             return 1
     else:
 
         def commitfunc(ui, repo, message, match, opts):
             overrides = {}
             if opts.get(b'secret'):
                 overrides[(b'phases', b'new-commit')] = b'secret'
 
             baseui = repo.baseui
             with baseui.configoverride(overrides, b'commit'):
                 with ui.configoverride(overrides, b'commit'):
                     editform = cmdutil.mergeeditform(
                         repo[None], b'commit.normal'
                     )
                     editor = cmdutil.getcommiteditor(
                         editform=editform, **pycompat.strkwargs(opts)
                     )
                     return repo.commit(
                         message,
                         opts.get(b'user'),
                         opts.get(b'date'),
                         match,
                         editor=editor,
                         extra=extra,
                     )
 
         opts = pycompat.byteskwargs(opts)
         node = cmdutil.commit(ui, repo, commitfunc, pats, opts)
 
         if not node:
             stat = cmdutil.postcommitstatus(repo, pats, opts)
             if stat.deleted:
                 ui.status(
                     _(
                         b"nothing changed (%d missing files, see "
                         b"'hg status')\n"
                     )
                     % len(stat.deleted)
                 )
             else:
                 ui.status(_(b"nothing changed\n"))
             return 1
 
     cmdutil.commitstatus(repo, node, branch, bheads, tip, opts)
 
     if not ui.quiet and ui.configbool(b'commands', b'commit.post-status'):
         status(
             ui,
             repo,
             modified=True,
             added=True,
             removed=True,
             deleted=True,
             unknown=True,
             subrepos=opts.get(b'subrepos'),
         )
 
 
 @command(
     b'config|showconfig|debugconfig',
     [
         (b'u', b'untrusted', None, _(b'show untrusted configuration options')),
         # This is experimental because we need
         # * reasonable behavior around aliases,
         # * decide if we display [debug] [experimental] and [devel] section par
         #   default
         # * some way to display "generic" config entry (the one matching
         #   regexp,
         # * proper display of the different value type
         # * a better way to handle <DYNAMIC> values (and variable types),
         # * maybe some type information ?
         (
             b'',
             b'exp-all-known',
             None,
             _(b'show all known config option (EXPERIMENTAL)'),
         ),
         (b'e', b'edit', None, _(b'edit user config')),
         (b'l', b'local', None, _(b'edit repository config')),
         (b'', b'source', None, _(b'show source of configuration value')),
         (
             b'',
             b'shared',
             None,
             _(b'edit shared source repository config (EXPERIMENTAL)'),
         ),
         (b'', b'non-shared', None, _(b'edit non shared config (EXPERIMENTAL)')),
         (b'g', b'global', None, _(b'edit global config')),
     ]
     + formatteropts,
     _(b'[-u] [NAME]...'),
     helpcategory=command.CATEGORY_HELP,
     optionalrepo=True,
     intents={INTENT_READONLY},
 )
 def config(ui, repo, *values, **opts):
     """show combined config settings from all hgrc files
 
     With no arguments, print names and values of all config items.
 
     With one argument of the form section.name, print just the value
     of that config item.
 
     With multiple arguments, print names and values of all config
     items with matching section names or section.names.
 
     With --edit, start an editor on the user-level config file. With
     --global, edit the system-wide config file. With --local, edit the
     repository-level config file.
 
     With --source, the source (filename and line number) is printed
     for each config item.
 
     See :hg:`help config` for more information about config files.
 
     .. container:: verbose
 
       --non-shared flag is used to edit `.hg/hgrc-not-shared` config file.
       This file is not shared across shares when in share-safe mode.
 
       Template:
 
       The following keywords are supported. See also :hg:`help templates`.
 
       :name:    String. Config name.
       :source:  String. Filename and line number where the item is defined.
       :value:   String. Config value.
 
       The --shared flag can be used to edit the config file of shared source
       repository. It only works when you have shared using the experimental
       share safe feature.
 
     Returns 0 on success, 1 if NAME does not exist.
 
     """
 
     opts = pycompat.byteskwargs(opts)
     editopts = (b'edit', b'local', b'global', b'shared', b'non_shared')
     if any(opts.get(o) for o in editopts):
         cmdutil.check_at_most_one_arg(opts, *editopts[1:])
         if opts.get(b'local'):
             if not repo:
                 raise error.InputError(
                     _(b"can't use --local outside a repository")
                 )
             paths = [repo.vfs.join(b'hgrc')]
         elif opts.get(b'global'):
             paths = rcutil.systemrcpath()
         elif opts.get(b'shared'):
             if not repo.shared():
                 raise error.InputError(
                     _(b"repository is not shared; can't use --shared")
                 )
             if requirements.SHARESAFE_REQUIREMENT not in repo.requirements:
                 raise error.InputError(
                     _(
                         b"share safe feature not enabled; "
                         b"unable to edit shared source repository config"
                     )
                 )
             paths = [vfsmod.vfs(repo.sharedpath).join(b'hgrc')]
         elif opts.get(b'non_shared'):
             paths = [repo.vfs.join(b'hgrc-not-shared')]
         else:
             paths = rcutil.userrcpath()
 
         for f in paths:
             if os.path.exists(f):
                 break
         else:
             if opts.get(b'global'):
                 samplehgrc = uimod.samplehgrcs[b'global']
             elif opts.get(b'local'):
                 samplehgrc = uimod.samplehgrcs[b'local']
             else:
                 samplehgrc = uimod.samplehgrcs[b'user']
 
             f = paths[0]
             fp = open(f, b"wb")
             fp.write(util.tonativeeol(samplehgrc))
             fp.close()
 
         editor = ui.geteditor()
         ui.system(
             b"%s \"%s\"" % (editor, f),
             onerr=error.InputError,
             errprefix=_(b"edit failed"),
             blockedtag=b'config_edit',
         )
         return
     ui.pager(b'config')
     fm = ui.formatter(b'config', opts)
     for t, f in rcutil.rccomponents():
         if t == b'path':
             ui.debug(b'read config from: %s\n' % f)
         elif t == b'resource':
             ui.debug(b'read config from: resource:%s.%s\n' % (f[0], f[1]))
         elif t == b'items':
             # Don't print anything for 'items'.
             pass
         else:
             raise error.ProgrammingError(b'unknown rctype: %s' % t)
     untrusted = bool(opts.get(b'untrusted'))
 
     selsections = selentries = []
     if values:
         selsections = [v for v in values if b'.' not in v]
         selentries = [v for v in values if b'.' in v]
     uniquesel = len(selentries) == 1 and not selsections
     selsections = set(selsections)
     selentries = set(selentries)
 
     matched = False
     all_known = opts[b'exp_all_known']
     show_source = ui.debugflag or opts.get(b'source')
     entries = ui.walkconfig(untrusted=untrusted, all_known=all_known)
     for section, name, value in entries:
         source = ui.configsource(section, name, untrusted)
         value = pycompat.bytestr(value)
         defaultvalue = ui.configdefault(section, name)
         if fm.isplain():
             source = source or b'none'
             value = value.replace(b'\n', b'\\n')
         entryname = section + b'.' + name
         if values and not (section in selsections or entryname in selentries):
             continue
         fm.startitem()
         fm.condwrite(show_source, b'source', b'%s: ', source)
         if uniquesel:
             fm.data(name=entryname)
             fm.write(b'value', b'%s\n', value)
         else:
             fm.write(b'name value', b'%s=%s\n', entryname, value)
         if formatter.isprintable(defaultvalue):
             fm.data(defaultvalue=defaultvalue)
         elif isinstance(defaultvalue, list) and all(
             formatter.isprintable(e) for e in defaultvalue
         ):
             fm.data(defaultvalue=fm.formatlist(defaultvalue, name=b'value'))
         # TODO: no idea how to process unsupported defaultvalue types
         matched = True
     fm.end()
     if matched:
         return 0
     return 1
 
 
 @command(
     b'continue',
     dryrunopts,
     helpcategory=command.CATEGORY_CHANGE_MANAGEMENT,
     helpbasic=True,
 )
 def continuecmd(ui, repo, **opts):
     """resumes an interrupted operation (EXPERIMENTAL)
 
     Finishes a multistep operation like graft, histedit, rebase, merge,
     and unshelve if they are in an interrupted state.
 
     use --dry-run/-n to dry run the command.
     """
     dryrun = opts.get('dry_run')
     contstate = cmdutil.getunfinishedstate(repo)
     if not contstate:
         raise error.StateError(_(b'no operation in progress'))
     if not contstate.continuefunc:
         raise error.StateError(
             (
                 _(b"%s in progress but does not support 'hg continue'")
                 % (contstate._opname)
             ),
             hint=contstate.continuemsg(),
         )
     if dryrun:
         ui.status(_(b'%s in progress, will be resumed\n') % (contstate._opname))
         return
     return contstate.continuefunc(ui, repo)
 
 
 @command(
     b'copy|cp',
     [
         (b'', b'forget', None, _(b'unmark a destination file as copied')),
         (b'A', b'after', None, _(b'record a copy that has already occurred')),
         (
             b'',
             b'at-rev',
             b'',
             _(b'(un)mark copies in the given revision (EXPERIMENTAL)'),
             _(b'REV'),
         ),
         (
             b'f',
             b'force',
             None,
             _(b'forcibly copy over an existing managed file'),
         ),
     ]
     + walkopts
     + dryrunopts,
     _(b'[OPTION]... (SOURCE... DEST | --forget DEST...)'),
     helpcategory=command.CATEGORY_FILE_CONTENTS,
 )
 def copy(ui, repo, *pats, **opts):
     """mark files as copied for the next commit
 
     Mark dest as having copies of source files. If dest is a
     directory, copies are put in that directory. If dest is a file,
     the source must be a single file.
 
     By default, this command copies the contents of files as they
     exist in the working directory. If invoked with -A/--after, the
     operation is recorded, but no copying is performed.
 
     To undo marking a destination file as copied, use --forget. With that
     option, all given (positional) arguments are unmarked as copies. The
     destination file(s) will be left in place (still tracked). Note that
     :hg:`copy --forget` behaves the same way as :hg:`rename --forget`.
 
     This command takes effect with the next commit by default.
 
     Returns 0 on success, 1 if errors are encountered.
     """
     opts = pycompat.byteskwargs(opts)
     with repo.wlock():
         return cmdutil.copy(ui, repo, pats, opts)
 
 
 @command(
     b'debugcommands',
     [],
     _(b'[COMMAND]'),
     helpcategory=command.CATEGORY_HELP,
     norepo=True,
 )
 def debugcommands(ui, cmd=b'', *args):
     """list all available commands and options"""
     for cmd, vals in sorted(pycompat.iteritems(table)):
         cmd = cmd.split(b'|')[0]
         opts = b', '.join([i[1] for i in vals[1]])
         ui.write(b'%s: %s\n' % (cmd, opts))
 
 
 @command(
     b'debugcomplete',
     [(b'o', b'options', None, _(b'show the command options'))],
     _(b'[-o] CMD'),
     helpcategory=command.CATEGORY_HELP,
     norepo=True,
 )
 def debugcomplete(ui, cmd=b'', **opts):
     """returns the completion list associated with the given command"""
 
     if opts.get('options'):
         options = []
         otables = [globalopts]
         if cmd:
             aliases, entry = cmdutil.findcmd(cmd, table, False)
             otables.append(entry[1])
         for t in otables:
             for o in t:
                 if b"(DEPRECATED)" in o[3]:
                     continue
                 if o[0]:
                     options.append(b'-%s' % o[0])
                 options.append(b'--%s' % o[1])
         ui.write(b"%s\n" % b"\n".join(options))
         return
 
     cmdlist, unused_allcmds = cmdutil.findpossible(cmd, table)
     if ui.verbose:
         cmdlist = [b' '.join(c[0]) for c in cmdlist.values()]
     ui.write(b"%s\n" % b"\n".join(sorted(cmdlist)))
 
 
 @command(
     b'diff',
     [
         (b'r', b'rev', [], _(b'revision (DEPRECATED)'), _(b'REV')),
         (b'', b'from', b'', _(b'revision to diff from'), _(b'REV1')),
         (b'', b'to', b'', _(b'revision to diff to'), _(b'REV2')),
         (b'c', b'change', b'', _(b'change made by revision'), _(b'REV')),
     ]
     + diffopts
     + diffopts2
     + walkopts
     + subrepoopts,
     _(b'[OPTION]... ([-c REV] | [--from REV1] [--to REV2]) [FILE]...'),
     helpcategory=command.CATEGORY_FILE_CONTENTS,
     helpbasic=True,
     inferrepo=True,
     intents={INTENT_READONLY},
 )
 def diff(ui, repo, *pats, **opts):
     """diff repository (or selected files)
 
     Show differences between revisions for the specified files.
 
     Differences between files are shown using the unified diff format.
 
     .. note::
 
        :hg:`diff` may generate unexpected results for merges, as it will
        default to comparing against the working directory's first
        parent changeset if no revisions are specified.
 
     By default, the working directory files are compared to its first parent. To
     see the differences from another revision, use --from. To see the difference
     to another revision, use --to. For example, :hg:`diff --from .^` will show
     the differences from the working copy's grandparent to the working copy,
     :hg:`diff --to .` will show the diff from the working copy to its parent
     (i.e. the reverse of the default), and :hg:`diff --from 1.0 --to 1.2` will
     show the diff between those two revisions.
 
     Alternatively you can specify -c/--change with a revision to see the changes
     in that changeset relative to its first parent (i.e. :hg:`diff -c 42` is
     equivalent to :hg:`diff --from 42^ --to 42`)
 
     Without the -a/--text option, diff will avoid generating diffs of
     files it detects as binary. With -a, diff will generate a diff
     anyway, probably with undesirable results.
 
     Use the -g/--git option to generate diffs in the git extended diff
     format. For more information, read :hg:`help diffs`.
 
     .. container:: verbose
 
       Examples:
 
       - compare a file in the current working directory to its parent::
 
           hg diff foo.c
 
       - compare two historical versions of a directory, with rename info::
 
           hg diff --git --from 1.0 --to 1.2 lib/
 
       - get change stats relative to the last change on some date::
 
           hg diff --stat --from "date('may 2')"
 
       - diff all newly-added files that contain a keyword::
 
           hg diff "set:added() and grep(GNU)"
 
       - compare a revision and its parents::
 
           hg diff -c 9353                  # compare against first parent
           hg diff --from 9353^ --to 9353   # same using revset syntax
           hg diff --from 9353^2 --to 9353  # compare against the second parent
 
     Returns 0 on success.
     """
 
     cmdutil.check_at_most_one_arg(opts, 'rev', 'change')
     opts = pycompat.byteskwargs(opts)
     revs = opts.get(b'rev')
     change = opts.get(b'change')
     from_rev = opts.get(b'from')
     to_rev = opts.get(b'to')
     stat = opts.get(b'stat')
     reverse = opts.get(b'reverse')
 
     cmdutil.check_incompatible_arguments(opts, b'from', [b'rev', b'change'])
     cmdutil.check_incompatible_arguments(opts, b'to', [b'rev', b'change'])
     if change:
         repo = scmutil.unhidehashlikerevs(repo, [change], b'nowarn')
         ctx2 = scmutil.revsingle(repo, change, None)
         ctx1 = logcmdutil.diff_parent(ctx2)
     elif from_rev or to_rev:
         repo = scmutil.unhidehashlikerevs(
             repo, [from_rev] + [to_rev], b'nowarn'
         )
         ctx1 = scmutil.revsingle(repo, from_rev, None)
         ctx2 = scmutil.revsingle(repo, to_rev, None)
     else:
         repo = scmutil.unhidehashlikerevs(repo, revs, b'nowarn')
         ctx1, ctx2 = scmutil.revpair(repo, revs)
 
     if reverse:
         ctxleft = ctx2
         ctxright = ctx1
     else:
         ctxleft = ctx1
         ctxright = ctx2
 
     diffopts = patch.diffallopts(ui, opts)
     m = scmutil.match(ctx2, pats, opts)
     m = repo.narrowmatch(m)
     ui.pager(b'diff')
     logcmdutil.diffordiffstat(
         ui,
         repo,
         diffopts,
         ctxleft,
         ctxright,
         m,
         stat=stat,
         listsubrepos=opts.get(b'subrepos'),
         root=opts.get(b'root'),
     )
 
 
 @command(
     b'export',
     [
         (
             b'B',
             b'bookmark',
             b'',
             _(b'export changes only reachable by given bookmark'),
             _(b'BOOKMARK'),
         ),
         (
             b'o',
             b'output',
             b'',
             _(b'print output to file with formatted name'),
             _(b'FORMAT'),
         ),
         (b'', b'switch-parent', None, _(b'diff against the second parent')),
         (b'r', b'rev', [], _(b'revisions to export'), _(b'REV')),
     ]
     + diffopts
     + formatteropts,
     _(b'[OPTION]... [-o OUTFILESPEC] [-r] [REV]...'),
     helpcategory=command.CATEGORY_IMPORT_EXPORT,
     helpbasic=True,
     intents={INTENT_READONLY},
 )
 def export(ui, repo, *changesets, **opts):
     """dump the header and diffs for one or more changesets
 
     Print the changeset header and diffs for one or more revisions.
     If no revision is given, the parent of the working directory is used.
 
     The information shown in the changeset header is: author, date,
     branch name (if non-default), changeset hash, parent(s) and commit
     comment.
 
     .. note::
 
        :hg:`export` may generate unexpected diff output for merge
        changesets, as it will compare the merge changeset against its
        first parent only.
 
     Output may be to a file, in which case the name of the file is
     given using a template string. See :hg:`help templates`. In addition
     to the common template keywords, the following formatting rules are
     supported:
 
     :``%%``: literal "%" character
     :``%H``: changeset hash (40 hexadecimal digits)
     :``%N``: number of patches being generated
     :``%R``: changeset revision number
     :``%b``: basename of the exporting repository
     :``%h``: short-form changeset hash (12 hexadecimal digits)
     :``%m``: first line of the commit message (only alphanumeric characters)
     :``%n``: zero-padded sequence number, starting at 1
     :``%r``: zero-padded changeset revision number
     :``\\``: literal "\\" character
 
     Without the -a/--text option, export will avoid generating diffs
     of files it detects as binary. With -a, export will generate a
     diff anyway, probably with undesirable results.
 
     With -B/--bookmark changesets reachable by the given bookmark are
     selected.
 
     Use the -g/--git option to generate diffs in the git extended diff
     format. See :hg:`help diffs` for more information.
 
     With the --switch-parent option, the diff will be against the
     second parent. It can be useful to review a merge.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions. See also :hg:`help templates`.
 
       :diff:    String. Diff content.
       :parents: List of strings. Parent nodes of the changeset.
 
       Examples:
 
       - use export and import to transplant a bugfix to the current
         branch::
 
           hg export -r 9353 | hg import -
 
       - export all the changesets between two revisions to a file with
         rename information::
 
           hg export --git -r 123:150 > changes.txt
 
       - split outgoing changes into a series of patches with
         descriptive names::
 
           hg export -r "outgoing()" -o "%n-%m.patch"
 
     Returns 0 on success.
     """
     opts = pycompat.byteskwargs(opts)
     bookmark = opts.get(b'bookmark')
     changesets += tuple(opts.get(b'rev', []))
 
     cmdutil.check_at_most_one_arg(opts, b'rev', b'bookmark')
 
     if bookmark:
         if bookmark not in repo._bookmarks:
             raise error.InputError(_(b"bookmark '%s' not found") % bookmark)
 
         revs = scmutil.bookmarkrevs(repo, bookmark)
     else:
         if not changesets:
             changesets = [b'.']
 
         repo = scmutil.unhidehashlikerevs(repo, changesets, b'nowarn')
         revs = scmutil.revrange(repo, changesets)
 
     if not revs:
         raise error.InputError(_(b"export requires at least one changeset"))
     if len(revs) > 1:
         ui.note(_(b'exporting patches:\n'))
     else:
         ui.note(_(b'exporting patch:\n'))
 
     fntemplate = opts.get(b'output')
     if cmdutil.isstdiofilename(fntemplate):
         fntemplate = b''
 
     if fntemplate:
         fm = formatter.nullformatter(ui, b'export', opts)
     else:
         ui.pager(b'export')
         fm = ui.formatter(b'export', opts)
     with fm:
         cmdutil.export(
             repo,
             revs,
             fm,
             fntemplate=fntemplate,
             switch_parent=opts.get(b'switch_parent'),
             opts=patch.diffallopts(ui, opts),
         )
 
 
 @command(
     b'files',
     [
         (
             b'r',
             b'rev',
             b'',
             _(b'search the repository as it is in REV'),
             _(b'REV'),
         ),
         (
             b'0',
             b'print0',
             None,
             _(b'end filenames with NUL, for use with xargs'),
         ),
     ]
     + walkopts
     + formatteropts
     + subrepoopts,
     _(b'[OPTION]... [FILE]...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
     intents={INTENT_READONLY},
 )
 def files(ui, repo, *pats, **opts):
     """list tracked files
 
     Print files under Mercurial control in the working directory or
     specified revision for given files (excluding removed files).
     Files can be specified as filenames or filesets.
 
     If no files are given to match, this command prints the names
     of all files under Mercurial control.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions. See also :hg:`help templates`.
 
       :flags:   String. Character denoting file's symlink and executable bits.
       :path:    String. Repository-absolute path of the file.
       :size:    Integer. Size of the file in bytes.
 
       Examples:
 
       - list all files under the current directory::
 
           hg files .
 
       - shows sizes and flags for current revision::
 
           hg files -vr .
 
       - list all files named README::
 
           hg files -I "**/README"
 
       - list all binary files::
 
           hg files "set:binary()"
 
       - find files containing a regular expression::
 
           hg files "set:grep('bob')"
 
       - search tracked file contents with xargs and grep::
 
           hg files -0 | xargs -0 grep foo
 
     See :hg:`help patterns` and :hg:`help filesets` for more information
     on specifying file patterns.
 
     Returns 0 if a match is found, 1 otherwise.
 
     """
 
     opts = pycompat.byteskwargs(opts)
     rev = opts.get(b'rev')
     if rev:
         repo = scmutil.unhidehashlikerevs(repo, [rev], b'nowarn')
     ctx = scmutil.revsingle(repo, rev, None)
 
     end = b'\n'
     if opts.get(b'print0'):
         end = b'\0'
     fmt = b'%s' + end
 
     m = scmutil.match(ctx, pats, opts)
     ui.pager(b'files')
     uipathfn = scmutil.getuipathfn(ctx.repo(), legacyrelativevalue=True)
     with ui.formatter(b'files', opts) as fm:
         return cmdutil.files(
             ui, ctx, m, uipathfn, fm, fmt, opts.get(b'subrepos')
         )
 
 
 @command(
     b'forget',
     [
         (b'i', b'interactive', None, _(b'use interactive mode')),
     ]
     + walkopts
     + dryrunopts,
     _(b'[OPTION]... FILE...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
     helpbasic=True,
     inferrepo=True,
 )
 def forget(ui, repo, *pats, **opts):
     """forget the specified files on the next commit
 
     Mark the specified files so they will no longer be tracked
     after the next commit.
 
     This only removes files from the current branch, not from the
     entire project history, and it does not delete them from the
     working directory.
 
     To delete the file from the working directory, see :hg:`remove`.
 
     To undo a forget before the next commit, see :hg:`add`.
 
     .. container:: verbose
 
       Examples:
 
       - forget newly-added binary files::
 
           hg forget "set:added() and binary()"
 
       - forget files that would be excluded by .hgignore::
 
           hg forget "set:hgignore()"
 
     Returns 0 on success.
     """
 
     opts = pycompat.byteskwargs(opts)
     if not pats:
         raise error.InputError(_(b'no files specified'))
 
     m = scmutil.match(repo[None], pats, opts)
     dryrun, interactive = opts.get(b'dry_run'), opts.get(b'interactive')
     uipathfn = scmutil.getuipathfn(repo, legacyrelativevalue=True)
     rejected = cmdutil.forget(
         ui,
         repo,
         m,
         prefix=b"",
         uipathfn=uipathfn,
         explicitonly=False,
         dryrun=dryrun,
         interactive=interactive,
     )[0]
     return rejected and 1 or 0
 
 
 @command(
     b'graft',
     [
         (b'r', b'rev', [], _(b'revisions to graft'), _(b'REV')),
         (
             b'',
             b'base',
             b'',
             _(b'base revision when doing the graft merge (ADVANCED)'),
             _(b'REV'),
         ),
         (b'c', b'continue', False, _(b'resume interrupted graft')),
         (b'', b'stop', False, _(b'stop interrupted graft')),
         (b'', b'abort', False, _(b'abort interrupted graft')),
         (b'e', b'edit', False, _(b'invoke editor on commit messages')),
         (b'', b'log', None, _(b'append graft info to log message')),
         (
             b'',
             b'no-commit',
             None,
             _(b"don't commit, just apply the changes in working directory"),
         ),
         (b'f', b'force', False, _(b'force graft')),
         (
             b'D',
             b'currentdate',
             False,
             _(b'record the current date as commit date'),
         ),
         (
             b'U',
             b'currentuser',
             False,
             _(b'record the current user as committer'),
         ),
     ]
     + commitopts2
     + mergetoolopts
     + dryrunopts,
     _(b'[OPTION]... [-r REV]... REV...'),
     helpcategory=command.CATEGORY_CHANGE_MANAGEMENT,
 )
 def graft(ui, repo, *revs, **opts):
     """copy changes from other branches onto the current branch
 
     This command uses Mercurial's merge logic to copy individual
     changes from other branches without merging branches in the
     history graph. This is sometimes known as 'backporting' or
     'cherry-picking'. By default, graft will copy user, date, and
     description from the source changesets.
 
     Changesets that are ancestors of the current revision, that have
     already been grafted, or that are merges will be skipped.
 
     If --log is specified, log messages will have a comment appended
     of the form::
 
       (grafted from CHANGESETHASH)
 
     If --force is specified, revisions will be grafted even if they
     are already ancestors of, or have been grafted to, the destination.
     This is useful when the revisions have since been backed out.
 
     If a graft merge results in conflicts, the graft process is
     interrupted so that the current merge can be manually resolved.
     Once all conflicts are addressed, the graft process can be
     continued with the -c/--continue option.
 
     The -c/--continue option reapplies all the earlier options.
 
     .. container:: verbose
 
       The --base option exposes more of how graft internally uses merge with a
       custom base revision. --base can be used to specify another ancestor than
       the first and only parent.
 
       The command::
 
         hg graft -r 345 --base 234
 
       is thus pretty much the same as::
 
         hg diff --from 234 --to 345 | hg import
 
       but using merge to resolve conflicts and track moved files.
 
       The result of a merge can thus be backported as a single commit by
       specifying one of the merge parents as base, and thus effectively
       grafting the changes from the other side.
 
       It is also possible to collapse multiple changesets and clean up history
       by specifying another ancestor as base, much like rebase --collapse
       --keep.
 
       The commit message can be tweaked after the fact using commit --amend .
 
       For using non-ancestors as the base to backout changes, see the backout
       command and the hidden --parent option.
 
     .. container:: verbose
 
       Examples:
 
       - copy a single change to the stable branch and edit its description::
 
           hg update stable
           hg graft --edit 9393
 
       - graft a range of changesets with one exception, updating dates::
 
           hg graft -D "2085::2093 and not 2091"
 
       - continue a graft after resolving conflicts::
 
           hg graft -c
 
       - show the source of a grafted changeset::
 
           hg log --debug -r .
 
       - show revisions sorted by date::
 
           hg log -r "sort(all(), date)"
 
       - backport the result of a merge as a single commit::
 
           hg graft -r 123 --base 123^
 
       - land a feature branch as one changeset::
 
           hg up -cr default
           hg graft -r featureX --base "ancestor('featureX', 'default')"
 
     See :hg:`help revisions` for more about specifying revisions.
 
     Returns 0 on successful completion, 1 if there are unresolved files.
     """
     with repo.wlock():
         return _dograft(ui, repo, *revs, **opts)
 
 
 def _dograft(ui, repo, *revs, **opts):
     if revs and opts.get('rev'):
         ui.warn(
             _(
                 b'warning: inconsistent use of --rev might give unexpected '
                 b'revision ordering!\n'
             )
         )
 
     revs = list(revs)
     revs.extend(opts.get('rev'))
     # a dict of data to be stored in state file
     statedata = {}
     # list of new nodes created by ongoing graft
     statedata[b'newnodes'] = []
 
     cmdutil.resolve_commit_options(ui, opts)
 
     editor = cmdutil.getcommiteditor(editform=b'graft', **opts)
 
     cmdutil.check_at_most_one_arg(opts, 'abort', 'stop', 'continue')
 
     cont = False
     if opts.get('no_commit'):
         cmdutil.check_incompatible_arguments(
             opts,
             'no_commit',
             ['edit', 'currentuser', 'currentdate', 'log'],
         )
 
     graftstate = statemod.cmdstate(repo, b'graftstate')
 
     if opts.get('stop'):
         cmdutil.check_incompatible_arguments(
             opts,
             'stop',
             [
                 'edit',
                 'log',
                 'user',
                 'date',
                 'currentdate',
                 'currentuser',
                 'rev',
             ],
         )
         return _stopgraft(ui, repo, graftstate)
     elif opts.get('abort'):
         cmdutil.check_incompatible_arguments(
             opts,
             'abort',
             [
                 'edit',
                 'log',
                 'user',
                 'date',
                 'currentdate',
                 'currentuser',
                 'rev',
             ],
         )
         return cmdutil.abortgraft(ui, repo, graftstate)
     elif opts.get('continue'):
         cont = True
         if revs:
             raise error.InputError(_(b"can't specify --continue and revisions"))
         # read in unfinished revisions
         if graftstate.exists():
             statedata = cmdutil.readgraftstate(repo, graftstate)
             if statedata.get(b'date'):
                 opts['date'] = statedata[b'date']
             if statedata.get(b'user'):
                 opts['user'] = statedata[b'user']
             if statedata.get(b'log'):
                 opts['log'] = True
             if statedata.get(b'no_commit'):
                 opts['no_commit'] = statedata.get(b'no_commit')
             if statedata.get(b'base'):
                 opts['base'] = statedata.get(b'base')
             nodes = statedata[b'nodes']
             revs = [repo[node].rev() for node in nodes]
         else:
             cmdutil.wrongtooltocontinue(repo, _(b'graft'))
     else:
         if not revs:
             raise error.InputError(_(b'no revisions specified'))
         cmdutil.checkunfinished(repo)
         cmdutil.bailifchanged(repo)
         revs = scmutil.revrange(repo, revs)
 
     skipped = set()
     basectx = None
     if opts.get('base'):
         basectx = scmutil.revsingle(repo, opts['base'], None)
     if basectx is None:
         # check for merges
         for rev in repo.revs(b'%ld and merge()', revs):
             ui.warn(_(b'skipping ungraftable merge revision %d\n') % rev)
             skipped.add(rev)
     revs = [r for r in revs if r not in skipped]
     if not revs:
         return -1
     if basectx is not None and len(revs) != 1:
         raise error.InputError(_(b'only one revision allowed with --base '))
 
     # Don't check in the --continue case, in effect retaining --force across
     # --continues. That's because without --force, any revisions we decided to
     # skip would have been filtered out here, so they wouldn't have made their
     # way to the graftstate. With --force, any revisions we would have otherwise
     # skipped would not have been filtered out, and if they hadn't been applied
     # already, they'd have been in the graftstate.
     if not (cont or opts.get('force')) and basectx is None:
         # check for ancestors of dest branch
         ancestors = repo.revs(b'%ld & (::.)', revs)
         for rev in ancestors:
             ui.warn(_(b'skipping ancestor revision %d:%s\n') % (rev, repo[rev]))
 
         revs = [r for r in revs if r not in ancestors]
 
         if not revs:
             return -1
 
         # analyze revs for earlier grafts
         ids = {}
         for ctx in repo.set(b"%ld", revs):
             ids[ctx.hex()] = ctx.rev()
             n = ctx.extra().get(b'source')
             if n:
                 ids[n] = ctx.rev()
 
         # check ancestors for earlier grafts
         ui.debug(b'scanning for duplicate grafts\n')
 
         # The only changesets we can be sure doesn't contain grafts of any
         # revs, are the ones that are common ancestors of *all* revs:
         for rev in repo.revs(b'only(%d,ancestor(%ld))', repo[b'.'].rev(), revs):
             ctx = repo[rev]
             n = ctx.extra().get(b'source')
             if n in ids:
                 try:
                     r = repo[n].rev()
                 except error.RepoLookupError:
                     r = None
                 if r in revs:
                     ui.warn(
                         _(
                             b'skipping revision %d:%s '
                             b'(already grafted to %d:%s)\n'
                         )
                         % (r, repo[r], rev, ctx)
                     )
                     revs.remove(r)
                 elif ids[n] in revs:
                     if r is None:
                         ui.warn(
                             _(
                                 b'skipping already grafted revision %d:%s '
                                 b'(%d:%s also has unknown origin %s)\n'
                             )
                             % (ids[n], repo[ids[n]], rev, ctx, n[:12])
                         )
                     else:
                         ui.warn(
                             _(
                                 b'skipping already grafted revision %d:%s '
                                 b'(%d:%s also has origin %d:%s)\n'
                             )
                             % (ids[n], repo[ids[n]], rev, ctx, r, n[:12])
                         )
                     revs.remove(ids[n])
             elif ctx.hex() in ids:
                 r = ids[ctx.hex()]
                 if r in revs:
                     ui.warn(
                         _(
                             b'skipping already grafted revision %d:%s '
                             b'(was grafted from %d:%s)\n'
                         )
                         % (r, repo[r], rev, ctx)
                     )
                     revs.remove(r)
         if not revs:
             return -1
 
     if opts.get('no_commit'):
         statedata[b'no_commit'] = True
     if opts.get('base'):
         statedata[b'base'] = opts['base']
     for pos, ctx in enumerate(repo.set(b"%ld", revs)):
         desc = b'%d:%s "%s"' % (
             ctx.rev(),
             ctx,
             ctx.description().split(b'\n', 1)[0],
         )
         names = repo.nodetags(ctx.node()) + repo.nodebookmarks(ctx.node())
         if names:
             desc += b' (%s)' % b' '.join(names)
         ui.status(_(b'grafting %s\n') % desc)
         if opts.get('dry_run'):
             continue
 
         source = ctx.extra().get(b'source')
         extra = {}
         if source:
             extra[b'source'] = source
             extra[b'intermediate-source'] = ctx.hex()
         else:
             extra[b'source'] = ctx.hex()
         user = ctx.user()
         if opts.get('user'):
             user = opts['user']
             statedata[b'user'] = user
         date = ctx.date()
         if opts.get('date'):
             date = opts['date']
             statedata[b'date'] = date
         message = ctx.description()
         if opts.get('log'):
             message += b'\n(grafted from %s)' % ctx.hex()
             statedata[b'log'] = True
 
         # we don't merge the first commit when continuing
         if not cont:
             # perform the graft merge with p1(rev) as 'ancestor'
             overrides = {(b'ui', b'forcemerge'): opts.get('tool', b'')}
             base = ctx.p1() if basectx is None else basectx
             with ui.configoverride(overrides, b'graft'):
                 stats = mergemod.graft(repo, ctx, base, [b'local', b'graft'])
             # report any conflicts
             if stats.unresolvedcount > 0:
                 # write out state for --continue
                 nodes = [repo[rev].hex() for rev in revs[pos:]]
                 statedata[b'nodes'] = nodes
                 stateversion = 1
                 graftstate.save(stateversion, statedata)
                 ui.error(_(b"abort: unresolved conflicts, can't continue\n"))
                 ui.error(_(b"(use 'hg resolve' and 'hg graft --continue')\n"))
                 return 1
         else:
             cont = False
 
         # commit if --no-commit is false
         if not opts.get('no_commit'):
             node = repo.commit(
                 text=message, user=user, date=date, extra=extra, editor=editor
             )
             if node is None:
                 ui.warn(
                     _(b'note: graft of %d:%s created no changes to commit\n')
                     % (ctx.rev(), ctx)
                 )
             # checking that newnodes exist because old state files won't have it
             elif statedata.get(b'newnodes') is not None:
                 nn = statedata[b'newnodes']
                 assert isinstance(nn, list)  # list of bytes
                 nn.append(node)
 
     # remove state when we complete successfully
     if not opts.get('dry_run'):
         graftstate.delete()
 
     return 0
 
 
 def _stopgraft(ui, repo, graftstate):
     """stop the interrupted graft"""
     if not graftstate.exists():
         raise error.StateError(_(b"no interrupted graft found"))
     pctx = repo[b'.']
     mergemod.clean_update(pctx)
     graftstate.delete()
     ui.status(_(b"stopped the interrupted graft\n"))
     ui.status(_(b"working directory is now at %s\n") % pctx.hex()[:12])
     return 0
 
 
 statemod.addunfinished(
     b'graft',
     fname=b'graftstate',
     clearable=True,
     stopflag=True,
     continueflag=True,
     abortfunc=cmdutil.hgabortgraft,
     cmdhint=_(b"use 'hg graft --continue' or 'hg graft --stop' to stop"),
 )
 
 
 @command(
     b'grep',
     [
         (b'0', b'print0', None, _(b'end fields with NUL')),
         (b'', b'all', None, _(b'an alias to --diff (DEPRECATED)')),
         (
             b'',
             b'diff',
             None,
             _(
                 b'search revision differences for when the pattern was added '
                 b'or removed'
             ),
         ),
         (b'a', b'text', None, _(b'treat all files as text')),
         (
             b'f',
             b'follow',
             None,
             _(
                 b'follow changeset history,'
                 b' or file history across copies and renames'
             ),
         ),
         (b'i', b'ignore-case', None, _(b'ignore case when matching')),
         (
             b'l',
             b'files-with-matches',
             None,
             _(b'print only filenames and revisions that match'),
         ),
         (b'n', b'line-number', None, _(b'print matching line numbers')),
         (
             b'r',
             b'rev',
             [],
             _(b'search files changed within revision range'),
             _(b'REV'),
         ),
         (
             b'',
             b'all-files',
             None,
             _(
                 b'include all files in the changeset while grepping (DEPRECATED)'
             ),
         ),
         (b'u', b'user', None, _(b'list the author (long with -v)')),
         (b'd', b'date', None, _(b'list the date (short with -q)')),
     ]
     + formatteropts
     + walkopts,
     _(b'[--diff] [OPTION]... PATTERN [FILE]...'),
     helpcategory=command.CATEGORY_FILE_CONTENTS,
     inferrepo=True,
     intents={INTENT_READONLY},
 )
 def grep(ui, repo, pattern, *pats, **opts):
     """search for a pattern in specified files
 
     Search the working directory or revision history for a regular
     expression in the specified files for the entire repository.
 
     By default, grep searches the repository files in the working
     directory and prints the files where it finds a match. To specify
     historical revisions instead of the working directory, use the
     --rev flag.
 
     To search instead historical revision differences that contains a
     change in match status ("-" for a match that becomes a non-match,
     or "+" for a non-match that becomes a match), use the --diff flag.
 
     PATTERN can be any Python (roughly Perl-compatible) regular
     expression.
 
     If no FILEs are specified and the --rev flag isn't supplied, all
     files in the working directory are searched. When using the --rev
     flag and specifying FILEs, use the --follow argument to also
     follow the specified FILEs across renames and copies.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions. See also :hg:`help templates`.
 
       :change:  String. Character denoting insertion ``+`` or removal ``-``.
                 Available if ``--diff`` is specified.
       :lineno:  Integer. Line number of the match.
       :path:    String. Repository-absolute path of the file.
       :texts:   List of text chunks.
 
       And each entry of ``{texts}`` provides the following sub-keywords.
 
       :matched: Boolean. True if the chunk matches the specified pattern.
       :text:    String. Chunk content.
 
       See :hg:`help templates.operators` for the list expansion syntax.
 
     Returns 0 if a match is found, 1 otherwise.
 
     """
     cmdutil.check_incompatible_arguments(opts, 'all_files', ['all', 'diff'])
     opts = pycompat.byteskwargs(opts)
     diff = opts.get(b'all') or opts.get(b'diff')
     follow = opts.get(b'follow')
     if opts.get(b'all_files') is None and not diff:
         opts[b'all_files'] = True
     plaingrep = (
         opts.get(b'all_files')
         and not opts.get(b'rev')
         and not opts.get(b'follow')
     )
     all_files = opts.get(b'all_files')
     if plaingrep:
         opts[b'rev'] = [b'wdir()']
 
     reflags = re.M
     if opts.get(b'ignore_case'):
         reflags |= re.I
     try:
         regexp = util.re.compile(pattern, reflags)
     except re.error as inst:
         ui.warn(
             _(b"grep: invalid match pattern: %s\n")
             % stringutil.forcebytestr(inst)
         )
         return 1
     sep, eol = b':', b'\n'
     if opts.get(b'print0'):
         sep = eol = b'\0'
 
     searcher = grepmod.grepsearcher(
         ui, repo, regexp, all_files=all_files, diff=diff, follow=follow
     )
 
     getfile = searcher._getfile
 
     uipathfn = scmutil.getuipathfn(repo)
 
     def display(fm, fn, ctx, pstates, states):
         rev = scmutil.intrev(ctx)
         if fm.isplain():
             formatuser = ui.shortuser
         else:
             formatuser = pycompat.bytestr
         if ui.quiet:
             datefmt = b'%Y-%m-%d'
         else:
             datefmt = b'%a %b %d %H:%M:%S %Y %1%2'
         found = False
 
         @util.cachefunc
         def binary():
             flog = getfile(fn)
             try:
                 return stringutil.binary(flog.read(ctx.filenode(fn)))
             except error.WdirUnsupported:
                 return ctx[fn].isbinary()
 
         fieldnamemap = {b'linenumber': b'lineno'}
         if diff:
             iter = grepmod.difflinestates(pstates, states)
         else:
             iter = [(b'', l) for l in states]
         for change, l in iter:
             fm.startitem()
             fm.context(ctx=ctx)
             fm.data(node=fm.hexfunc(scmutil.binnode(ctx)), path=fn)
             fm.plain(uipathfn(fn), label=b'grep.filename')
 
             cols = [
                 (b'rev', b'%d', rev, not plaingrep, b''),
                 (
                     b'linenumber',
                     b'%d',
                     l.linenum,
                     opts.get(b'line_number'),
                     b'',
                 ),
             ]
             if diff:
                 cols.append(
                     (
                         b'change',
                         b'%s',
                         change,
                         True,
                         b'grep.inserted '
                         if change == b'+'
                         else b'grep.deleted ',
                     )
                 )
             cols.extend(
                 [
                     (
                         b'user',
                         b'%s',
                         formatuser(ctx.user()),
                         opts.get(b'user'),
                         b'',
                     ),
                     (
                         b'date',
                         b'%s',
                         fm.formatdate(ctx.date(), datefmt),
                         opts.get(b'date'),
                         b'',
                     ),
                 ]
             )
             for name, fmt, data, cond, extra_label in cols:
                 if cond:
                     fm.plain(sep, label=b'grep.sep')
                 field = fieldnamemap.get(name, name)
                 label = extra_label + (b'grep.%s' % name)
                 fm.condwrite(cond, field, fmt, data, label=label)
             if not opts.get(b'files_with_matches'):
                 fm.plain(sep, label=b'grep.sep')
                 if not opts.get(b'text') and binary():
                     fm.plain(_(b" Binary file matches"))
                 else:
                     displaymatches(fm.nested(b'texts', tmpl=b'{text}'), l)
             fm.plain(eol)
             found = True
             if opts.get(b'files_with_matches'):
                 break
         return found
 
     def displaymatches(fm, l):
         p = 0
         for s, e in l.findpos(regexp):
             if p < s:
                 fm.startitem()
                 fm.write(b'text', b'%s', l.line[p:s])
                 fm.data(matched=False)
             fm.startitem()
             fm.write(b'text', b'%s', l.line[s:e], label=b'grep.match')
             fm.data(matched=True)
             p = e
         if p < len(l.line):
             fm.startitem()
             fm.write(b'text', b'%s', l.line[p:])
             fm.data(matched=False)
         fm.end()
 
     found = False
 
     wopts = logcmdutil.walkopts(
         pats=pats,
         opts=opts,
         revspec=opts[b'rev'],
         include_pats=opts[b'include'],
         exclude_pats=opts[b'exclude'],
         follow=follow,
         force_changelog_traversal=all_files,
         filter_revisions_by_pats=not all_files,
     )
     revs, makefilematcher = logcmdutil.makewalker(repo, wopts)
 
     ui.pager(b'grep')
     fm = ui.formatter(b'grep', opts)
     for fn, ctx, pstates, states in searcher.searchfiles(revs, makefilematcher):
         r = display(fm, fn, ctx, pstates, states)
         found = found or r
         if r and not diff and not all_files:
             searcher.skipfile(fn, ctx.rev())
     fm.end()
 
     return not found
 
 
 @command(
     b'heads',
     [
         (
             b'r',
             b'rev',
             b'',
             _(b'show only heads which are descendants of STARTREV'),
             _(b'STARTREV'),
         ),
         (b't', b'topo', False, _(b'show topological heads only')),
         (
             b'a',
             b'active',
             False,
             _(b'show active branchheads only (DEPRECATED)'),
         ),
         (b'c', b'closed', False, _(b'show normal and closed branch heads')),
     ]
     + templateopts,
     _(b'[-ct] [-r STARTREV] [REV]...'),
     helpcategory=command.CATEGORY_CHANGE_NAVIGATION,
     intents={INTENT_READONLY},
 )
 def heads(ui, repo, *branchrevs, **opts):
     """show branch heads
 
     With no arguments, show all open branch heads in the repository.
     Branch heads are changesets that have no descendants on the
     same branch. They are where development generally takes place and
     are the usual targets for update and merge operations.
 
     If one or more REVs are given, only open branch heads on the
     branches associated with the specified changesets are shown. This
     means that you can use :hg:`heads .` to see the heads on the
     currently checked-out branch.
 
     If -c/--closed is specified, also show branch heads marked closed
     (see :hg:`commit --close-branch`).
 
     If STARTREV is specified, only those heads that are descendants of
     STARTREV will be displayed.
 
     If -t/--topo is specified, named branch mechanics will be ignored and only
     topological heads (changesets with no children) will be shown.
 
     Returns 0 if matching heads are found, 1 if not.
     """
 
     opts = pycompat.byteskwargs(opts)
     start = None
     rev = opts.get(b'rev')
     if rev:
         repo = scmutil.unhidehashlikerevs(repo, [rev], b'nowarn')
         start = scmutil.revsingle(repo, rev, None).node()
 
     if opts.get(b'topo'):
         heads = [repo[h] for h in repo.heads(start)]
     else:
         heads = []
         for branch in repo.branchmap():
             heads += repo.branchheads(branch, start, opts.get(b'closed'))
         heads = [repo[h] for h in heads]
 
     if branchrevs:
         branches = {
             repo[r].branch() for r in scmutil.revrange(repo, branchrevs)
         }
         heads = [h for h in heads if h.branch() in branches]
 
     if opts.get(b'active') and branchrevs:
         dagheads = repo.heads(start)
         heads = [h for h in heads if h.node() in dagheads]
 
     if branchrevs:
         haveheads = {h.branch() for h in heads}
         if branches - haveheads:
             headless = b', '.join(b for b in branches - haveheads)
             msg = _(b'no open branch heads found on branches %s')
             if opts.get(b'rev'):
                 msg += _(b' (started at %s)') % opts[b'rev']
             ui.warn((msg + b'\n') % headless)
 
     if not heads:
         return 1
 
     ui.pager(b'heads')
     heads = sorted(heads, key=lambda x: -(x.rev()))
     displayer = logcmdutil.changesetdisplayer(ui, repo, opts)
     for ctx in heads:
         displayer.show(ctx)
     displayer.close()
 
 
 @command(
     b'help',
     [
         (b'e', b'extension', None, _(b'show only help for extensions')),
         (b'c', b'command', None, _(b'show only help for commands')),
         (b'k', b'keyword', None, _(b'show topics matching keyword')),
         (
             b's',
             b'system',
             [],
             _(b'show help for specific platform(s)'),
             _(b'PLATFORM'),
         ),
     ],
     _(b'[-eck] [-s PLATFORM] [TOPIC]'),
     helpcategory=command.CATEGORY_HELP,
     norepo=True,
     intents={INTENT_READONLY},
 )
 def help_(ui, name=None, **opts):
     """show help for a given topic or a help overview
 
     With no arguments, print a list of commands with short help messages.
 
     Given a topic, extension, or command name, print help for that
     topic.
 
     Returns 0 if successful.
     """
 
     keep = opts.get('system') or []
     if len(keep) == 0:
         if pycompat.sysplatform.startswith(b'win'):
             keep.append(b'windows')
         elif pycompat.sysplatform == b'OpenVMS':
             keep.append(b'vms')
         elif pycompat.sysplatform == b'plan9':
             keep.append(b'plan9')
         else:
             keep.append(b'unix')
             keep.append(pycompat.sysplatform.lower())
     if ui.verbose:
         keep.append(b'verbose')
 
     commands = sys.modules[__name__]
     formatted = help.formattedhelp(ui, commands, name, keep=keep, **opts)
     ui.pager(b'help')
     ui.write(formatted)
 
 
 @command(
     b'identify|id',
     [
         (b'r', b'rev', b'', _(b'identify the specified revision'), _(b'REV')),
         (b'n', b'num', None, _(b'show local revision number')),
         (b'i', b'id', None, _(b'show global revision id')),
         (b'b', b'branch', None, _(b'show branch')),
         (b't', b'tags', None, _(b'show tags')),
         (b'B', b'bookmarks', None, _(b'show bookmarks')),
     ]
     + remoteopts
     + formatteropts,
     _(b'[-nibtB] [-r REV] [SOURCE]'),
     helpcategory=command.CATEGORY_CHANGE_NAVIGATION,
     optionalrepo=True,
     intents={INTENT_READONLY},
 )
 def identify(
     ui,
     repo,
     source=None,
     rev=None,
     num=None,
     id=None,
     branch=None,
     tags=None,
     bookmarks=None,
     **opts
 ):
     """identify the working directory or specified revision
 
     Print a summary identifying the repository state at REV using one or
     two parent hash identifiers, followed by a "+" if the working
     directory has uncommitted changes, the branch name (if not default),
     a list of tags, and a list of bookmarks.
 
     When REV is not given, print a summary of the current state of the
     repository including the working directory. Specify -r. to get information
     of the working directory parent without scanning uncommitted changes.
 
     Specifying a path to a repository root or Mercurial bundle will
     cause lookup to operate on that repository/bundle.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions. See also :hg:`help templates`.
 
       :dirty:   String. Character ``+`` denoting if the working directory has
                 uncommitted changes.
       :id:      String. One or two nodes, optionally followed by ``+``.
       :parents: List of strings. Parent nodes of the changeset.
 
       Examples:
 
       - generate a build identifier for the working directory::
 
           hg id --id > build-id.dat
 
       - find the revision corresponding to a tag::
 
           hg id -n -r 1.3
 
       - check the most recent revision of a remote repository::
 
           hg id -r tip https://www.mercurial-scm.org/repo/hg/
 
     See :hg:`log` for generating more information about specific revisions,
     including full hash identifiers.
 
     Returns 0 if successful.
     """
 
     opts = pycompat.byteskwargs(opts)
     if not repo and not source:
         raise error.InputError(
             _(b"there is no Mercurial repository here (.hg not found)")
         )
 
     default = not (num or id or branch or tags or bookmarks)
     output = []
     revs = []
 
     peer = None
     try:
         if source:
             source, branches = urlutil.get_unique_pull_path(
                 b'identify', repo, ui, source
             )
             # only pass ui when no repo
             peer = hg.peer(repo or ui, opts, source)
             repo = peer.local()
             revs, checkout = hg.addbranchrevs(repo, peer, branches, None)
 
         fm = ui.formatter(b'identify', opts)
         fm.startitem()
 
         if not repo:
             if num or branch or tags:
                 raise error.InputError(
                     _(b"can't query remote revision number, branch, or tags")
                 )
             if not rev and revs:
                 rev = revs[0]
             if not rev:
                 rev = b"tip"
 
             remoterev = peer.lookup(rev)
             hexrev = fm.hexfunc(remoterev)
             if default or id:
                 output = [hexrev]
             fm.data(id=hexrev)
 
             @util.cachefunc
             def getbms():
                 bms = []
 
                 if b'bookmarks' in peer.listkeys(b'namespaces'):
                     hexremoterev = hex(remoterev)
                     bms = [
                         bm
                         for bm, bmr in pycompat.iteritems(
                             peer.listkeys(b'bookmarks')
                         )
                         if bmr == hexremoterev
                     ]
 
                 return sorted(bms)
 
             if fm.isplain():
                 if bookmarks:
                     output.extend(getbms())
                 elif default and not ui.quiet:
                     # multiple bookmarks for a single parent separated by '/'
                     bm = b'/'.join(getbms())
                     if bm:
                         output.append(bm)
             else:
                 fm.data(node=hex(remoterev))
                 if bookmarks or b'bookmarks' in fm.datahint():
                     fm.data(bookmarks=fm.formatlist(getbms(), name=b'bookmark'))
         else:
             if rev:
                 repo = scmutil.unhidehashlikerevs(repo, [rev], b'nowarn')
             ctx = scmutil.revsingle(repo, rev, None)
 
             if ctx.rev() is None:
                 ctx = repo[None]
                 parents = ctx.parents()
                 taglist = []
                 for p in parents:
                     taglist.extend(p.tags())
 
                 dirty = b""
                 if ctx.dirty(missing=True, merge=False, branch=False):
                     dirty = b'+'
                 fm.data(dirty=dirty)
 
                 hexoutput = [fm.hexfunc(p.node()) for p in parents]
                 if default or id:
                     output = [b"%s%s" % (b'+'.join(hexoutput), dirty)]
                 fm.data(id=b"%s%s" % (b'+'.join(hexoutput), dirty))
 
                 if num:
                     numoutput = [b"%d" % p.rev() for p in parents]
                     output.append(b"%s%s" % (b'+'.join(numoutput), dirty))
 
                 fm.data(
                     parents=fm.formatlist(
                         [fm.hexfunc(p.node()) for p in parents], name=b'node'
                     )
                 )
             else:
                 hexoutput = fm.hexfunc(ctx.node())
                 if default or id:
                     output = [hexoutput]
                 fm.data(id=hexoutput)
 
                 if num:
                     output.append(pycompat.bytestr(ctx.rev()))
                 taglist = ctx.tags()
 
             if default and not ui.quiet:
                 b = ctx.branch()
                 if b != b'default':
                     output.append(b"(%s)" % b)
 
                 # multiple tags for a single parent separated by '/'
                 t = b'/'.join(taglist)
                 if t:
                     output.append(t)
 
                 # multiple bookmarks for a single parent separated by '/'
                 bm = b'/'.join(ctx.bookmarks())
                 if bm:
                     output.append(bm)
             else:
                 if branch:
                     output.append(ctx.branch())
 
                 if tags:
                     output.extend(taglist)
 
                 if bookmarks:
                     output.extend(ctx.bookmarks())
 
             fm.data(node=ctx.hex())
             fm.data(branch=ctx.branch())
             fm.data(tags=fm.formatlist(taglist, name=b'tag', sep=b':'))
             fm.data(bookmarks=fm.formatlist(ctx.bookmarks(), name=b'bookmark'))
             fm.context(ctx=ctx)
 
         fm.plain(b"%s\n" % b' '.join(output))
         fm.end()
     finally:
         if peer:
             peer.close()
 
 
 @command(
     b'import|patch',
     [
         (
             b'p',
             b'strip',
             1,
             _(
                 b'directory strip option for patch. This has the same '
                 b'meaning as the corresponding patch option'
             ),
             _(b'NUM'),
         ),
         (b'b', b'base', b'', _(b'base path (DEPRECATED)'), _(b'PATH')),
         (b'', b'secret', None, _(b'use the secret phase for committing')),
         (b'e', b'edit', False, _(b'invoke editor on commit messages')),
         (
             b'f',
             b'force',
             None,
             _(b'skip check for outstanding uncommitted changes (DEPRECATED)'),
         ),
         (
             b'',
             b'no-commit',
             None,
             _(b"don't commit, just update the working directory"),
         ),
         (
             b'',
             b'bypass',
             None,
             _(b"apply patch without touching the working directory"),
         ),
         (b'', b'partial', None, _(b'commit even if some hunks fail')),
         (b'', b'exact', None, _(b'abort if patch would apply lossily')),
         (b'', b'prefix', b'', _(b'apply patch to subdirectory'), _(b'DIR')),
         (
             b'',
             b'import-branch',
             None,
             _(b'use any branch information in patch (implied by --exact)'),
         ),
     ]
     + commitopts
     + commitopts2
     + similarityopts,
     _(b'[OPTION]... PATCH...'),
     helpcategory=command.CATEGORY_IMPORT_EXPORT,
 )
 def import_(ui, repo, patch1=None, *patches, **opts):
     """import an ordered set of patches
 
     Import a list of patches and commit them individually (unless
     --no-commit is specified).
 
     To read a patch from standard input (stdin), use "-" as the patch
     name. If a URL is specified, the patch will be downloaded from
     there.
 
     Import first applies changes to the working directory (unless
     --bypass is specified), import will abort if there are outstanding
     changes.
 
     Use --bypass to apply and commit patches directly to the
     repository, without affecting the working directory. Without
     --exact, patches will be applied on top of the working directory
     parent revision.
 
     You can import a patch straight from a mail message. Even patches
     as attachments work (to use the body part, it must have type
     text/plain or text/x-patch). From and Subject headers of email
     message are used as default committer and commit message. All
     text/plain body parts before first diff are added to the commit
     message.
 
     If the imported patch was generated by :hg:`export`, user and
     description from patch override values from message headers and
     body. Values given on command line with -m/--message and -u/--user
     override these.
 
     If --exact is specified, import will set the working directory to
     the parent of each patch before applying it, and will abort if the
     resulting changeset has a different ID than the one recorded in
     the patch. This will guard against various ways that portable
     patch formats and mail systems might fail to transfer Mercurial
     data or metadata. See :hg:`bundle` for lossless transmission.
 
     Use --partial to ensure a changeset will be created from the patch
     even if some hunks fail to apply. Hunks that fail to apply will be
     written to a <target-file>.rej file. Conflicts can then be resolved
     by hand before :hg:`commit --amend` is run to update the created
     changeset. This flag exists to let people import patches that
     partially apply without losing the associated metadata (author,
     date, description, ...).
 
     .. note::
 
        When no hunks apply cleanly, :hg:`import --partial` will create
        an empty changeset, importing only the patch metadata.
 
     With -s/--similarity, hg will attempt to discover renames and
     copies in the patch in the same way as :hg:`addremove`.
 
     It is possible to use external patch programs to perform the patch
     by setting the ``ui.patch`` configuration option. For the default
     internal tool, the fuzz can also be configured via ``patch.fuzz``.
     See :hg:`help config` for more information about configuration
     files and how to use these options.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     .. container:: verbose
 
       Examples:
 
       - import a traditional patch from a website and detect renames::
 
           hg import -s 80 http://example.com/bugfix.patch
 
       - import a changeset from an hgweb server::
 
           hg import https://www.mercurial-scm.org/repo/hg/rev/5ca8c111e9aa
 
       - import all the patches in an Unix-style mbox::
 
           hg import incoming-patches.mbox
 
       - import patches from stdin::
 
           hg import -
 
       - attempt to exactly restore an exported changeset (not always
         possible)::
 
           hg import --exact proposed-fix.patch
 
       - use an external tool to apply a patch which is too fuzzy for
         the default internal tool.
 
           hg import --config ui.patch="patch --merge" fuzzy.patch
 
       - change the default fuzzing from 2 to a less strict 7
 
           hg import --config ui.fuzz=7 fuzz.patch
 
     Returns 0 on success, 1 on partial success (see --partial).
     """
 
     cmdutil.check_incompatible_arguments(
         opts, 'no_commit', ['bypass', 'secret']
     )
     cmdutil.check_incompatible_arguments(opts, 'exact', ['edit', 'prefix'])
     opts = pycompat.byteskwargs(opts)
     if not patch1:
         raise error.InputError(_(b'need at least one patch to import'))
 
     patches = (patch1,) + patches
 
     date = opts.get(b'date')
     if date:
         opts[b'date'] = dateutil.parsedate(date)
 
     exact = opts.get(b'exact')
     update = not opts.get(b'bypass')
     try:
         sim = float(opts.get(b'similarity') or 0)
     except ValueError:
         raise error.InputError(_(b'similarity must be a number'))
     if sim < 0 or sim > 100:
         raise error.InputError(_(b'similarity must be between 0 and 100'))
     if sim and not update:
         raise error.InputError(_(b'cannot use --similarity with --bypass'))
 
     base = opts[b"base"]
     msgs = []
     ret = 0
 
     with repo.wlock():
         if update:
             cmdutil.checkunfinished(repo)
             if exact or not opts.get(b'force'):
                 cmdutil.bailifchanged(repo)
 
         if not opts.get(b'no_commit'):
             lock = repo.lock
             tr = lambda: repo.transaction(b'import')
             dsguard = util.nullcontextmanager
         else:
             lock = util.nullcontextmanager
             tr = util.nullcontextmanager
             dsguard = lambda: dirstateguard.dirstateguard(repo, b'import')
         with lock(), tr(), dsguard():
             parents = repo[None].parents()
             for patchurl in patches:
                 if patchurl == b'-':
                     ui.status(_(b'applying patch from stdin\n'))
                     patchfile = ui.fin
                     patchurl = b'stdin'  # for error message
                 else:
                     patchurl = os.path.join(base, patchurl)
                     ui.status(_(b'applying %s\n') % patchurl)
                     patchfile = hg.openpath(ui, patchurl, sendaccept=False)
 
                 haspatch = False
                 for hunk in patch.split(patchfile):
                     with patch.extract(ui, hunk) as patchdata:
                         msg, node, rej = cmdutil.tryimportone(
                             ui, repo, patchdata, parents, opts, msgs, hg.clean
                         )
                     if msg:
                         haspatch = True
                         ui.note(msg + b'\n')
                     if update or exact:
                         parents = repo[None].parents()
                     else:
                         parents = [repo[node]]
                     if rej:
                         ui.write_err(_(b"patch applied partially\n"))
                         ui.write_err(
                             _(
                                 b"(fix the .rej files and run "
                                 b"`hg commit --amend`)\n"
                             )
                         )
                         ret = 1
                         break
 
                 if not haspatch:
                     raise error.InputError(_(b'%s: no diffs found') % patchurl)
 
             if msgs:
                 repo.savecommitmessage(b'\n* * *\n'.join(msgs))
         return ret
 
 
 @command(
     b'incoming|in',
     [
         (
             b'f',
             b'force',
             None,
             _(b'run even if remote repository is unrelated'),
         ),
         (b'n', b'newest-first', None, _(b'show newest record first')),
         (b'', b'bundle', b'', _(b'file to store the bundles into'), _(b'FILE')),
         (
             b'r',
             b'rev',
             [],
             _(b'a remote changeset intended to be added'),
             _(b'REV'),
         ),
         (b'B', b'bookmarks', False, _(b"compare bookmarks")),
         (
             b'b',
             b'branch',
             [],
             _(b'a specific branch you would like to pull'),
             _(b'BRANCH'),
         ),
     ]
     + logopts
     + remoteopts
     + subrepoopts,
     _(b'[-p] [-n] [-M] [-f] [-r REV]... [--bundle FILENAME] [SOURCE]'),
     helpcategory=command.CATEGORY_REMOTE_REPO_MANAGEMENT,
 )
 def incoming(ui, repo, source=b"default", **opts):
     """show new changesets found in source
 
     Show new changesets found in the specified path/URL or the default
     pull location. These are the changesets that would have been pulled
     by :hg:`pull` at the time you issued this command.
 
     See pull for valid source format details.
 
     .. container:: verbose
 
       With -B/--bookmarks, the result of bookmark comparison between
       local and remote repositories is displayed. With -v/--verbose,
       status is also displayed for each bookmark like below::
 
         BM1               01234567890a added
         BM2               1234567890ab advanced
         BM3               234567890abc diverged
         BM4               34567890abcd changed
 
       The action taken locally when pulling depends on the
       status of each bookmark:
 
       :``added``: pull will create it
       :``advanced``: pull will update it
       :``diverged``: pull will create a divergent bookmark
       :``changed``: result depends on remote changesets
 
       From the point of view of pulling behavior, bookmark
       existing only in the remote repository are treated as ``added``,
       even if it is in fact locally deleted.
 
     .. container:: verbose
 
       For remote repository, using --bundle avoids downloading the
       changesets twice if the incoming is followed by a pull.
 
       Examples:
 
       - show incoming changes with patches and full description::
 
           hg incoming -vp
 
       - show incoming changes excluding merges, store a bundle::
 
           hg in -vpM --bundle incoming.hg
           hg pull incoming.hg
 
       - briefly list changes inside a bundle::
 
           hg in changes.hg -T "{desc|firstline}\\n"
 
     Returns 0 if there are incoming changes, 1 otherwise.
     """
     opts = pycompat.byteskwargs(opts)
     if opts.get(b'graph'):
         logcmdutil.checkunsupportedgraphflags([], opts)
 
         def display(other, chlist, displayer):
             revdag = logcmdutil.graphrevs(other, chlist, opts)
             logcmdutil.displaygraph(
                 ui, repo, revdag, displayer, graphmod.asciiedges
             )
 
         hg._incoming(display, lambda: 1, ui, repo, source, opts, buffered=True)
         return 0
 
     cmdutil.check_incompatible_arguments(opts, b'subrepos', [b'bundle'])
 
     if opts.get(b'bookmarks'):
         srcs = urlutil.get_pull_paths(repo, ui, [source], opts.get(b'branch'))
         for source, branches in srcs:
             other = hg.peer(repo, opts, source)
             try:
                 if b'bookmarks' not in other.listkeys(b'namespaces'):
                     ui.warn(_(b"remote doesn't support bookmarks\n"))
                     return 0
                 ui.pager(b'incoming')
                 ui.status(
                     _(b'comparing with %s\n') % urlutil.hidepassword(source)
                 )
                 return bookmarks.incoming(ui, repo, other)
             finally:
                 other.close()
 
     return hg.incoming(ui, repo, source, opts)
 
 
 @command(
     b'init',
     remoteopts,
     _(b'[-e CMD] [--remotecmd CMD] [DEST]'),
     helpcategory=command.CATEGORY_REPO_CREATION,
     helpbasic=True,
     norepo=True,
 )
 def init(ui, dest=b".", **opts):
     """create a new repository in the given directory
 
     Initialize a new repository in the given directory. If the given
     directory does not exist, it will be created.
 
     If no directory is given, the current directory is used.
 
     It is possible to specify an ``ssh://`` URL as the destination.
     See :hg:`help urls` for more information.
 
     Returns 0 on success.
     """
     opts = pycompat.byteskwargs(opts)
     path = urlutil.get_clone_path(ui, dest)[1]
     peer = hg.peer(ui, opts, path, create=True)
     peer.close()
 
 
 @command(
     b'locate',
     [
         (
             b'r',
             b'rev',
             b'',
             _(b'search the repository as it is in REV'),
             _(b'REV'),
         ),
         (
             b'0',
             b'print0',
             None,
             _(b'end filenames with NUL, for use with xargs'),
         ),
         (
             b'f',
             b'fullpath',
             None,
             _(b'print complete paths from the filesystem root'),
         ),
     ]
     + walkopts,
     _(b'[OPTION]... [PATTERN]...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
 )
 def locate(ui, repo, *pats, **opts):
     """locate files matching specific patterns (DEPRECATED)
 
     Print files under Mercurial control in the working directory whose
     names match the given patterns.
 
     By default, this command searches all directories in the working
     directory. To search just the current directory and its
     subdirectories, use "--include .".
 
     If no patterns are given to match, this command prints the names
     of all files under Mercurial control in the working directory.
 
     If you want to feed the output of this command into the "xargs"
     command, use the -0 option to both this command and "xargs". This
     will avoid the problem of "xargs" treating single filenames that
     contain whitespace as multiple filenames.
 
     See :hg:`help files` for a more versatile command.
 
     Returns 0 if a match is found, 1 otherwise.
     """
     opts = pycompat.byteskwargs(opts)
     if opts.get(b'print0'):
         end = b'\0'
     else:
         end = b'\n'
     ctx = scmutil.revsingle(repo, opts.get(b'rev'), None)
 
     ret = 1
     m = scmutil.match(
         ctx, pats, opts, default=b'relglob', badfn=lambda x, y: False
     )
 
     ui.pager(b'locate')
     if ctx.rev() is None:
         # When run on the working copy, "locate" includes removed files, so
         # we get the list of files from the dirstate.
         filesgen = sorted(repo.dirstate.matches(m))
     else:
         filesgen = ctx.matches(m)
     uipathfn = scmutil.getuipathfn(repo, legacyrelativevalue=bool(pats))
     for abs in filesgen:
         if opts.get(b'fullpath'):
             ui.write(repo.wjoin(abs), end)
         else:
             ui.write(uipathfn(abs), end)
         ret = 0
 
     return ret
 
 
 @command(
     b'log|history',
     [
         (
             b'f',
             b'follow',
             None,
             _(
                 b'follow changeset history, or file history across copies and renames'
             ),
         ),
         (
             b'',
             b'follow-first',
             None,
             _(b'only follow the first parent of merge changesets (DEPRECATED)'),
         ),
         (
             b'd',
             b'date',
             b'',
             _(b'show revisions matching date spec'),
             _(b'DATE'),
         ),
         (b'C', b'copies', None, _(b'show copied files')),
         (
             b'k',
             b'keyword',
             [],
             _(b'do case-insensitive search for a given text'),
             _(b'TEXT'),
         ),
         (
             b'r',
             b'rev',
             [],
             _(b'revisions to select or follow from'),
             _(b'REV'),
         ),
         (
             b'L',
             b'line-range',
             [],
             _(b'follow line range of specified file (EXPERIMENTAL)'),
             _(b'FILE,RANGE'),
         ),
         (
             b'',
             b'removed',
             None,
             _(b'include revisions where files were removed'),
         ),
         (
             b'm',
             b'only-merges',
             None,
             _(b'show only merges (DEPRECATED) (use -r "merge()" instead)'),
         ),
         (b'u', b'user', [], _(b'revisions committed by user'), _(b'USER')),
         (
             b'',
             b'only-branch',
             [],
             _(
                 b'show only changesets within the given named branch (DEPRECATED)'
             ),
             _(b'BRANCH'),
         ),
         (
             b'b',
             b'branch',
             [],
             _(b'show changesets within the given named branch'),
             _(b'BRANCH'),
         ),
         (
             b'B',
             b'bookmark',
             [],
             _(b"show changesets within the given bookmark"),
             _(b'BOOKMARK'),
         ),
         (
             b'P',
             b'prune',
             [],
             _(b'do not display revision or any of its ancestors'),
             _(b'REV'),
         ),
     ]
     + logopts
     + walkopts,
     _(b'[OPTION]... [FILE]'),
     helpcategory=command.CATEGORY_CHANGE_NAVIGATION,
     helpbasic=True,
     inferrepo=True,
     intents={INTENT_READONLY},
 )
 def log(ui, repo, *pats, **opts):
     """show revision history of entire repository or files
 
     Print the revision history of the specified files or the entire
     project.
 
     If no revision range is specified, the default is ``tip:0`` unless
     --follow is set.
 
     File history is shown without following rename or copy history of
     files. Use -f/--follow with a filename to follow history across
     renames and copies. --follow without a filename will only show
     ancestors of the starting revisions. The starting revisions can be
     specified by -r/--rev, which default to the working directory parent.
 
     By default this command prints revision number and changeset id,
     tags, non-trivial parents, user, date and time, and a summary for
     each commit. When the -v/--verbose switch is used, the list of
     changed files and full commit message are shown.
 
     With --graph the revisions are shown as an ASCII art DAG with the most
     recent changeset at the top.
     'o' is a changeset, '@' is a working directory parent, '%' is a changeset
     involved in an unresolved merge conflict, '_' closes a branch,
     'x' is obsolete, '*' is unstable, and '+' represents a fork where the
     changeset from the lines below is a parent of the 'o' merge on the same
     line.
     Paths in the DAG are represented with '|', '/' and so forth. ':' in place
     of a '|' indicates one or more revisions in a path are omitted.
 
     .. container:: verbose
 
        Use -L/--line-range FILE,M:N options to follow the history of lines
        from M to N in FILE. With -p/--patch only diff hunks affecting
        specified line range will be shown. This option requires --follow;
        it can be specified multiple times. Currently, this option is not
        compatible with --graph. This option is experimental.
 
     .. note::
 
        :hg:`log --patch` may generate unexpected diff output for merge
        changesets, as it will only compare the merge changeset against
        its first parent. Also, only files different from BOTH parents
        will appear in files:.
 
     .. note::
 
        For performance reasons, :hg:`log FILE` may omit duplicate changes
        made on branches and will not show removals or mode changes. To
        see all such changes, use the --removed switch.
 
     .. container:: verbose
 
        .. note::
 
           The history resulting from -L/--line-range options depends on diff
           options; for instance if white-spaces are ignored, respective changes
           with only white-spaces in specified line range will not be listed.
 
     .. container:: verbose
 
       Some examples:
 
       - changesets with full descriptions and file lists::
 
           hg log -v
 
       - changesets ancestral to the working directory::
 
           hg log -f
 
       - last 10 commits on the current branch::
 
           hg log -l 10 -b .
 
       - changesets showing all modifications of a file, including removals::
 
           hg log --removed file.c
 
       - all changesets that touch a directory, with diffs, excluding merges::
 
           hg log -Mp lib/
 
       - all revision numbers that match a keyword::
 
           hg log -k bug --template "{rev}\\n"
 
       - the full hash identifier of the working directory parent::
 
           hg log -r . --template "{node}\\n"
 
       - list available log templates::
 
           hg log -T list
 
       - check if a given changeset is included in a tagged release::
 
           hg log -r "a21ccf and ancestor(1.9)"
 
       - find all changesets by some user in a date range::
 
           hg log -k alice -d "may 2008 to jul 2008"
 
       - summary of all changesets after the last tag::
 
           hg log -r "last(tagged())::" --template "{desc|firstline}\\n"
 
       - changesets touching lines 13 to 23 for file.c::
 
           hg log -L file.c,13:23
 
       - changesets touching lines 13 to 23 for file.c and lines 2 to 6 of
         main.c with patch::
 
           hg log -L file.c,13:23 -L main.c,2:6 -p
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     See :hg:`help revisions` for more about specifying and ordering
     revisions.
 
     See :hg:`help templates` for more about pre-packaged styles and
     specifying custom templates. The default template used by the log
     command can be customized via the ``command-templates.log`` configuration
     setting.
 
     Returns 0 on success.
 
     """
     opts = pycompat.byteskwargs(opts)
     linerange = opts.get(b'line_range')
 
     if linerange and not opts.get(b'follow'):
         raise error.InputError(_(b'--line-range requires --follow'))
 
     if linerange and pats:
         # TODO: take pats as patterns with no line-range filter
         raise error.InputError(
             _(b'FILE arguments are not compatible with --line-range option')
         )
 
     repo = scmutil.unhidehashlikerevs(repo, opts.get(b'rev'), b'nowarn')
     walk_opts = logcmdutil.parseopts(ui, pats, opts)
     revs, differ = logcmdutil.getrevs(repo, walk_opts)
     if linerange:
         # TODO: should follow file history from logcmdutil._initialrevs(),
         # then filter the result by logcmdutil._makerevset() and --limit
         revs, differ = logcmdutil.getlinerangerevs(repo, revs, opts)
 
     getcopies = None
     if opts.get(b'copies'):
         endrev = None
         if revs:
             endrev = revs.max() + 1
         getcopies = scmutil.getcopiesfn(repo, endrev=endrev)
 
     ui.pager(b'log')
     displayer = logcmdutil.changesetdisplayer(
         ui, repo, opts, differ, buffered=True
     )
     if opts.get(b'graph'):
         displayfn = logcmdutil.displaygraphrevs
     else:
         displayfn = logcmdutil.displayrevs
     displayfn(ui, repo, revs, displayer, getcopies)
 
 
 @command(
     b'manifest',
     [
         (b'r', b'rev', b'', _(b'revision to display'), _(b'REV')),
         (b'', b'all', False, _(b"list files from all revisions")),
     ]
     + formatteropts,
     _(b'[-r REV]'),
     helpcategory=command.CATEGORY_MAINTENANCE,
     intents={INTENT_READONLY},
 )
 def manifest(ui, repo, node=None, rev=None, **opts):
     """output the current or given revision of the project manifest
 
     Print a list of version controlled files for the given revision.
     If no revision is given, the first parent of the working directory
     is used, or the null revision if no revision is checked out.
 
     With -v, print file permissions, symlink and executable bits.
     With --debug, print file revision hashes.
 
     If option --all is specified, the list of all files from all revisions
     is printed. This includes deleted and renamed files.
 
     Returns 0 on success.
     """
     opts = pycompat.byteskwargs(opts)
     fm = ui.formatter(b'manifest', opts)
 
     if opts.get(b'all'):
         if rev or node:
             raise error.InputError(_(b"can't specify a revision with --all"))
 
         res = set()
         for rev in repo:
             ctx = repo[rev]
             res |= set(ctx.files())
 
         ui.pager(b'manifest')
         for f in sorted(res):
             fm.startitem()
             fm.write(b"path", b'%s\n', f)
         fm.end()
         return
 
     if rev and node:
         raise error.InputError(_(b"please specify just one revision"))
 
     if not node:
         node = rev
 
     char = {b'l': b'@', b'x': b'*', b'': b'', b't': b'd'}
     mode = {b'l': b'644', b'x': b'755', b'': b'644', b't': b'755'}
     if node:
         repo = scmutil.unhidehashlikerevs(repo, [node], b'nowarn')
     ctx = scmutil.revsingle(repo, node)
     mf = ctx.manifest()
     ui.pager(b'manifest')
     for f in ctx:
         fm.startitem()
         fm.context(ctx=ctx)
         fl = ctx[f].flags()
         fm.condwrite(ui.debugflag, b'hash', b'%s ', hex(mf[f]))
         fm.condwrite(ui.verbose, b'mode type', b'%s %1s ', mode[fl], char[fl])
         fm.write(b'path', b'%s\n', f)
     fm.end()
 
 
 @command(
     b'merge',
     [
         (
             b'f',
             b'force',
             None,
             _(b'force a merge including outstanding changes (DEPRECATED)'),
         ),
         (b'r', b'rev', b'', _(b'revision to merge'), _(b'REV')),
         (
             b'P',
             b'preview',
             None,
             _(b'review revisions to merge (no merge is performed)'),
         ),
         (b'', b'abort', None, _(b'abort the ongoing merge')),
     ]
     + mergetoolopts,
     _(b'[-P] [[-r] REV]'),
     helpcategory=command.CATEGORY_CHANGE_MANAGEMENT,
     helpbasic=True,
 )
 def merge(ui, repo, node=None, **opts):
     """merge another revision into working directory
 
     The current working directory is updated with all changes made in
     the requested revision since the last common predecessor revision.
 
     Files that changed between either parent are marked as changed for
     the next commit and a commit must be performed before any further
     updates to the repository are allowed. The next commit will have
     two parents.
 
     ``--tool`` can be used to specify the merge tool used for file
     merges. It overrides the HGMERGE environment variable and your
     configuration files. See :hg:`help merge-tools` for options.
 
     If no revision is specified, the working directory's parent is a
     head revision, and the current branch contains exactly one other
     head, the other head is merged with by default. Otherwise, an
     explicit revision with which to merge must be provided.
 
     See :hg:`help resolve` for information on handling file conflicts.
 
     To undo an uncommitted merge, use :hg:`merge --abort` which
     will check out a clean copy of the original merge parent, losing
     all changes.
 
     Returns 0 on success, 1 if there are unresolved files.
     """
 
     opts = pycompat.byteskwargs(opts)
     abort = opts.get(b'abort')
     if abort and repo.dirstate.p2() == repo.nullid:
         cmdutil.wrongtooltocontinue(repo, _(b'merge'))
     cmdutil.check_incompatible_arguments(opts, b'abort', [b'rev', b'preview'])
     if abort:
         state = cmdutil.getunfinishedstate(repo)
         if state and state._opname != b'merge':
             raise error.StateError(
                 _(b'cannot abort merge with %s in progress') % (state._opname),
                 hint=state.hint(),
             )
         if node:
             raise error.InputError(_(b"cannot specify a node with --abort"))
         return hg.abortmerge(repo.ui, repo)
 
     if opts.get(b'rev') and node:
         raise error.InputError(_(b"please specify just one revision"))
     if not node:
         node = opts.get(b'rev')
 
     if node:
         ctx = scmutil.revsingle(repo, node)
     else:
         if ui.configbool(b'commands', b'merge.require-rev'):
             raise error.InputError(
                 _(
                     b'configuration requires specifying revision to merge '
                     b'with'
                 )
             )
         ctx = repo[destutil.destmerge(repo)]
 
     if ctx.node() is None:
         raise error.InputError(
             _(b'merging with the working copy has no effect')
         )
 
     if opts.get(b'preview'):
         # find nodes that are ancestors of p2 but not of p1
         p1 = repo[b'.'].node()
         p2 = ctx.node()
         nodes = repo.changelog.findmissing(common=[p1], heads=[p2])
 
         displayer = logcmdutil.changesetdisplayer(ui, repo, opts)
         for node in nodes:
             displayer.show(repo[node])
         displayer.close()
         return 0
 
     # ui.forcemerge is an internal variable, do not document
     overrides = {(b'ui', b'forcemerge'): opts.get(b'tool', b'')}
     with ui.configoverride(overrides, b'merge'):
         force = opts.get(b'force')
         labels = [b'working copy', b'merge rev']
         return hg.merge(ctx, force=force, labels=labels)
 
 
 statemod.addunfinished(
     b'merge',
     fname=None,
     clearable=True,
     allowcommit=True,
     cmdmsg=_(b'outstanding uncommitted merge'),
     abortfunc=hg.abortmerge,
     statushint=_(
         b'To continue:    hg commit\nTo abort:       hg merge --abort'
     ),
     cmdhint=_(b"use 'hg commit' or 'hg merge --abort'"),
 )
 
 
 @command(
     b'outgoing|out',
     [
         (
             b'f',
             b'force',
             None,
             _(b'run even when the destination is unrelated'),
         ),
         (
             b'r',
             b'rev',
             [],
             _(b'a changeset intended to be included in the destination'),
             _(b'REV'),
         ),
         (b'n', b'newest-first', None, _(b'show newest record first')),
         (b'B', b'bookmarks', False, _(b'compare bookmarks')),
         (
             b'b',
             b'branch',
             [],
             _(b'a specific branch you would like to push'),
             _(b'BRANCH'),
         ),
     ]
     + logopts
     + remoteopts
     + subrepoopts,
     _(b'[-M] [-p] [-n] [-f] [-r REV]... [DEST]...'),
     helpcategory=command.CATEGORY_REMOTE_REPO_MANAGEMENT,
 )
 def outgoing(ui, repo, *dests, **opts):
     """show changesets not found in the destination
 
     Show changesets not found in the specified destination repository
     or the default push location. These are the changesets that would
     be pushed if a push was requested.
 
     See pull for details of valid destination formats.
 
     .. container:: verbose
 
       With -B/--bookmarks, the result of bookmark comparison between
       local and remote repositories is displayed. With -v/--verbose,
       status is also displayed for each bookmark like below::
 
         BM1               01234567890a added
         BM2                            deleted
         BM3               234567890abc advanced
         BM4               34567890abcd diverged
         BM5               4567890abcde changed
 
       The action taken when pushing depends on the
       status of each bookmark:
 
       :``added``: push with ``-B`` will create it
       :``deleted``: push with ``-B`` will delete it
       :``advanced``: push will update it
       :``diverged``: push with ``-B`` will update it
       :``changed``: push with ``-B`` will update it
 
       From the point of view of pushing behavior, bookmarks
       existing only in the remote repository are treated as
       ``deleted``, even if it is in fact added remotely.
 
     Returns 0 if there are outgoing changes, 1 otherwise.
     """
     opts = pycompat.byteskwargs(opts)
     if opts.get(b'bookmarks'):
         for path in urlutil.get_push_paths(repo, ui, dests):
             dest = path.pushloc or path.loc
             other = hg.peer(repo, opts, dest)
             try:
                 if b'bookmarks' not in other.listkeys(b'namespaces'):
                     ui.warn(_(b"remote doesn't support bookmarks\n"))
                     return 0
                 ui.status(
                     _(b'comparing with %s\n') % urlutil.hidepassword(dest)
                 )
                 ui.pager(b'outgoing')
                 return bookmarks.outgoing(ui, repo, other)
             finally:
                 other.close()
 
     return hg.outgoing(ui, repo, dests, opts)
 
 
 @command(
     b'parents',
     [
         (
             b'r',
             b'rev',
             b'',
             _(b'show parents of the specified revision'),
             _(b'REV'),
         ),
     ]
     + templateopts,
     _(b'[-r REV] [FILE]'),
     helpcategory=command.CATEGORY_CHANGE_NAVIGATION,
     inferrepo=True,
 )
 def parents(ui, repo, file_=None, **opts):
     """show the parents of the working directory or revision (DEPRECATED)
 
     Print the working directory's parent revisions. If a revision is
     given via -r/--rev, the parent of that revision will be printed.
     If a file argument is given, the revision in which the file was
     last changed (before the working directory revision or the
     argument to --rev if given) is printed.
 
     This command is equivalent to::
 
         hg log -r "p1()+p2()" or
         hg log -r "p1(REV)+p2(REV)" or
         hg log -r "max(::p1() and file(FILE))+max(::p2() and file(FILE))" or
         hg log -r "max(::p1(REV) and file(FILE))+max(::p2(REV) and file(FILE))"
 
     See :hg:`summary` and :hg:`help revsets` for related information.
 
     Returns 0 on success.
     """
 
     opts = pycompat.byteskwargs(opts)
     rev = opts.get(b'rev')
     if rev:
         repo = scmutil.unhidehashlikerevs(repo, [rev], b'nowarn')
     ctx = scmutil.revsingle(repo, rev, None)
 
     if file_:
         m = scmutil.match(ctx, (file_,), opts)
         if m.anypats() or len(m.files()) != 1:
             raise error.InputError(_(b'can only specify an explicit filename'))
         file_ = m.files()[0]
         filenodes = []
         for cp in ctx.parents():
             if not cp:
                 continue
             try:
                 filenodes.append(cp.filenode(file_))
             except error.LookupError:
                 pass
         if not filenodes:
             raise error.InputError(_(b"'%s' not found in manifest") % file_)
         p = []
         for fn in filenodes:
             fctx = repo.filectx(file_, fileid=fn)
             p.append(fctx.node())
     else:
         p = [cp.node() for cp in ctx.parents()]
 
     displayer = logcmdutil.changesetdisplayer(ui, repo, opts)
     for n in p:
         if n != repo.nullid:
             displayer.show(repo[n])
     displayer.close()
 
 
 @command(
     b'paths',
     formatteropts,
     _(b'[NAME]'),
     helpcategory=command.CATEGORY_REMOTE_REPO_MANAGEMENT,
     optionalrepo=True,
     intents={INTENT_READONLY},
 )
 def paths(ui, repo, search=None, **opts):
     """show aliases for remote repositories
 
     Show definition of symbolic path name NAME. If no name is given,
     show definition of all available names.
 
     Option -q/--quiet suppresses all output when searching for NAME
     and shows only the path names when listing all definitions.
 
     Path names are defined in the [paths] section of your
     configuration file and in ``/etc/mercurial/hgrc``. If run inside a
     repository, ``.hg/hgrc`` is used, too.
 
     The path names ``default`` and ``default-push`` have a special
     meaning.  When performing a push or pull operation, they are used
     as fallbacks if no location is specified on the command-line.
     When ``default-push`` is set, it will be used for push and
     ``default`` will be used for pull; otherwise ``default`` is used
     as the fallback for both.  When cloning a repository, the clone
     source is written as ``default`` in ``.hg/hgrc``.
 
     .. note::
 
        ``default`` and ``default-push`` apply to all inbound (e.g.
        :hg:`incoming`) and outbound (e.g. :hg:`outgoing`, :hg:`email`
        and :hg:`bundle`) operations.
 
     See :hg:`help urls` for more information.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported. See also :hg:`help templates`.
 
       :name:    String. Symbolic name of the path alias.
       :pushurl: String. URL for push operations.
       :url:     String. URL or directory path for the other operations.
 
     Returns 0 on success.
     """
 
     opts = pycompat.byteskwargs(opts)
 
     pathitems = urlutil.list_paths(ui, search)
     ui.pager(b'paths')
 
     fm = ui.formatter(b'paths', opts)
     if fm.isplain():
         hidepassword = urlutil.hidepassword
     else:
         hidepassword = bytes
     if ui.quiet:
         namefmt = b'%s\n'
     else:
         namefmt = b'%s = '
     showsubopts = not search and not ui.quiet
 
     for name, path in pathitems:
         fm.startitem()
         fm.condwrite(not search, b'name', namefmt, name)
         fm.condwrite(not ui.quiet, b'url', b'%s\n', hidepassword(path.rawloc))
         for subopt, value in sorted(path.suboptions.items()):
             assert subopt not in (b'name', b'url')
             if showsubopts:
                 fm.plain(b'%s:%s = ' % (name, subopt))
             if isinstance(value, bool):
                 if value:
                     value = b'yes'
                 else:
                     value = b'no'
             fm.condwrite(showsubopts, subopt, b'%s\n', value)
 
     fm.end()
 
     if search and not pathitems:
         if not ui.quiet:
             ui.warn(_(b"not found!\n"))
         return 1
     else:
         return 0
 
 
 @command(
     b'phase',
     [
         (b'p', b'public', False, _(b'set changeset phase to public')),
         (b'd', b'draft', False, _(b'set changeset phase to draft')),
         (b's', b'secret', False, _(b'set changeset phase to secret')),
         (b'f', b'force', False, _(b'allow to move boundary backward')),
         (b'r', b'rev', [], _(b'target revision'), _(b'REV')),
     ],
     _(b'[-p|-d|-s] [-f] [-r] [REV...]'),
     helpcategory=command.CATEGORY_CHANGE_ORGANIZATION,
 )
 def phase(ui, repo, *revs, **opts):
     """set or show the current phase name
 
     With no argument, show the phase name of the current revision(s).
 
     With one of -p/--public, -d/--draft or -s/--secret, change the
     phase value of the specified revisions.
 
     Unless -f/--force is specified, :hg:`phase` won't move changesets from a
     lower phase to a higher phase. Phases are ordered as follows::
 
         public < draft < secret
 
     Returns 0 on success, 1 if some phases could not be changed.
 
     (For more information about the phases concept, see :hg:`help phases`.)
     """
     opts = pycompat.byteskwargs(opts)
     # search for a unique phase argument
     targetphase = None
     for idx, name in enumerate(phases.cmdphasenames):
         if opts[name]:
             if targetphase is not None:
                 raise error.InputError(_(b'only one phase can be specified'))
             targetphase = idx
 
     # look for specified revision
     revs = list(revs)
     revs.extend(opts[b'rev'])
     if not revs:
         # display both parents as the second parent phase can influence
         # the phase of a merge commit
         revs = [c.rev() for c in repo[None].parents()]
 
     revs = scmutil.revrange(repo, revs)
 
     ret = 0
     if targetphase is None:
         # display
         for r in revs:
             ctx = repo[r]
             ui.write(b'%i: %s\n' % (ctx.rev(), ctx.phasestr()))
     else:
         with repo.lock(), repo.transaction(b"phase") as tr:
             # set phase
             if not revs:
                 raise error.InputError(_(b'empty revision set'))
             nodes = [repo[r].node() for r in revs]
             # moving revision from public to draft may hide them
             # We have to check result on an unfiltered repository
             unfi = repo.unfiltered()
             getphase = unfi._phasecache.phase
             olddata = [getphase(unfi, r) for r in unfi]
             phases.advanceboundary(repo, tr, targetphase, nodes)
             if opts[b'force']:
                 phases.retractboundary(repo, tr, targetphase, nodes)
         getphase = unfi._phasecache.phase
         newdata = [getphase(unfi, r) for r in unfi]
         changes = sum(newdata[r] != olddata[r] for r in unfi)
         cl = unfi.changelog
         rejected = [n for n in nodes if newdata[cl.rev(n)] < targetphase]
         if rejected:
             ui.warn(
                 _(
                     b'cannot move %i changesets to a higher '
                     b'phase, use --force\n'
                 )
                 % len(rejected)
             )
             ret = 1
         if changes:
             msg = _(b'phase changed for %i changesets\n') % changes
             if ret:
                 ui.status(msg)
             else:
                 ui.note(msg)
         else:
             ui.warn(_(b'no phases changed\n'))
     return ret
 
 
 def postincoming(ui, repo, modheads, optupdate, checkout, brev):
     """Run after a changegroup has been added via pull/unbundle
 
     This takes arguments below:
 
     :modheads: change of heads by pull/unbundle
     :optupdate: updating working directory is needed or not
     :checkout: update destination revision (or None to default destination)
     :brev: a name, which might be a bookmark to be activated after updating
 
     return True if update raise any conflict, False otherwise.
     """
     if modheads == 0:
         return False
     if optupdate:
         try:
             return hg.updatetotally(ui, repo, checkout, brev)
         except error.UpdateAbort as inst:
             msg = _(b"not updating: %s") % stringutil.forcebytestr(inst)
             hint = inst.hint
             raise error.UpdateAbort(msg, hint=hint)
     if modheads is not None and modheads > 1:
         currentbranchheads = len(repo.branchheads())
         if currentbranchheads == modheads:
             ui.status(
                 _(b"(run 'hg heads' to see heads, 'hg merge' to merge)\n")
             )
         elif currentbranchheads > 1:
             ui.status(
                 _(b"(run 'hg heads .' to see heads, 'hg merge' to merge)\n")
             )
         else:
             ui.status(_(b"(run 'hg heads' to see heads)\n"))
     elif not ui.configbool(b'commands', b'update.requiredest'):
         ui.status(_(b"(run 'hg update' to get a working copy)\n"))
     return False
 
 
 @command(
     b'pull',
     [
         (
             b'u',
             b'update',
             None,
             _(b'update to new branch head if new descendants were pulled'),
         ),
         (
             b'f',
             b'force',
             None,
             _(b'run even when remote repository is unrelated'),
         ),
         (
             b'',
             b'confirm',
             None,
             _(b'confirm pull before applying changes'),
         ),
         (
             b'r',
             b'rev',
             [],
             _(b'a remote changeset intended to be added'),
             _(b'REV'),
         ),
         (b'B', b'bookmark', [], _(b"bookmark to pull"), _(b'BOOKMARK')),
         (
             b'b',
             b'branch',
             [],
             _(b'a specific branch you would like to pull'),
             _(b'BRANCH'),
         ),
     ]
     + remoteopts,
     _(b'[-u] [-f] [-r REV]... [-e CMD] [--remotecmd CMD] [SOURCE]...'),
     helpcategory=command.CATEGORY_REMOTE_REPO_MANAGEMENT,
     helpbasic=True,
 )
 def pull(ui, repo, *sources, **opts):
     """pull changes from the specified source
 
     Pull changes from a remote repository to a local one.
 
     This finds all changes from the repository at the specified path
     or URL and adds them to a local repository (the current one unless
     -R is specified). By default, this does not update the copy of the
     project in the working directory.
 
     When cloning from servers that support it, Mercurial may fetch
     pre-generated data. When this is done, hooks operating on incoming
     changesets and changegroups may fire more than once, once for each
     pre-generated bundle and as well as for any additional remaining
     data. See :hg:`help -e clonebundles` for more.
 
     Use :hg:`incoming` if you want to see what would have been added
     by a pull at the time you issued this command. If you then decide
     to add those changes to the repository, you should use :hg:`pull
     -r X` where ``X`` is the last changeset listed by :hg:`incoming`.
 
     If SOURCE is omitted, the 'default' path will be used.
     See :hg:`help urls` for more information.
 
     If multiple sources are specified, they will be pulled sequentially as if
     the command was run multiple time. If --update is specify and the command
     will stop at the first failed --update.
 
     Specifying bookmark as ``.`` is equivalent to specifying the active
     bookmark's name.
 
     Returns 0 on success, 1 if an update had unresolved files.
     """
 
     opts = pycompat.byteskwargs(opts)
     if ui.configbool(b'commands', b'update.requiredest') and opts.get(
         b'update'
     ):
         msg = _(b'update destination required by configuration')
         hint = _(b'use hg pull followed by hg update DEST')
         raise error.InputError(msg, hint=hint)
 
     sources = urlutil.get_pull_paths(repo, ui, sources, opts.get(b'branch'))
     for source, branches in sources:
         ui.status(_(b'pulling from %s\n') % urlutil.hidepassword(source))
         ui.flush()
         other = hg.peer(repo, opts, source)
         update_conflict = None
         try:
             revs, checkout = hg.addbranchrevs(
                 repo, other, branches, opts.get(b'rev')
             )
 
             pullopargs = {}
 
             nodes = None
             if opts.get(b'bookmark') or revs:
                 # The list of bookmark used here is the same used to actually update
                 # the bookmark names, to avoid the race from issue 4689 and we do
                 # all lookup and bookmark queries in one go so they see the same
                 # version of the server state (issue 4700).
                 nodes = []
                 fnodes = []
                 revs = revs or []
                 if revs and not other.capable(b'lookup'):
                     err = _(
                         b"other repository doesn't support revision lookup, "
                         b"so a rev cannot be specified."
                     )
                     raise error.Abort(err)
                 with other.commandexecutor() as e:
                     fremotebookmarks = e.callcommand(
                         b'listkeys', {b'namespace': b'bookmarks'}
                     )
                     for r in revs:
                         fnodes.append(e.callcommand(b'lookup', {b'key': r}))
                 remotebookmarks = fremotebookmarks.result()
                 remotebookmarks = bookmarks.unhexlifybookmarks(remotebookmarks)
                 pullopargs[b'remotebookmarks'] = remotebookmarks
                 for b in opts.get(b'bookmark', []):
                     b = repo._bookmarks.expandname(b)
                     if b not in remotebookmarks:
                         raise error.InputError(
                             _(b'remote bookmark %s not found!') % b
                         )
                     nodes.append(remotebookmarks[b])
                 for i, rev in enumerate(revs):
                     node = fnodes[i].result()
                     nodes.append(node)
                     if rev == checkout:
                         checkout = node
 
             wlock = util.nullcontextmanager()
             if opts.get(b'update'):
                 wlock = repo.wlock()
             with wlock:
                 pullopargs.update(opts.get(b'opargs', {}))
                 modheads = exchange.pull(
                     repo,
                     other,
                     heads=nodes,
                     force=opts.get(b'force'),
                     bookmarks=opts.get(b'bookmark', ()),
                     opargs=pullopargs,
                     confirm=opts.get(b'confirm'),
                 ).cgresult
 
                 # brev is a name, which might be a bookmark to be activated at
                 # the end of the update. In other words, it is an explicit
                 # destination of the update
                 brev = None
 
                 if checkout:
                     checkout = repo.unfiltered().changelog.rev(checkout)
 
                     # order below depends on implementation of
                     # hg.addbranchrevs(). opts['bookmark'] is ignored,
                     # because 'checkout' is determined without it.
                     if opts.get(b'rev'):
                         brev = opts[b'rev'][0]
                     elif opts.get(b'branch'):
                         brev = opts[b'branch'][0]
                     else:
                         brev = branches[0]
                 repo._subtoppath = source
                 try:
                     update_conflict = postincoming(
                         ui, repo, modheads, opts.get(b'update'), checkout, brev
                     )
                 except error.FilteredRepoLookupError as exc:
                     msg = _(b'cannot update to target: %s') % exc.args[0]
                     exc.args = (msg,) + exc.args[1:]
                     raise
                 finally:
                     del repo._subtoppath
 
         finally:
             other.close()
         # skip the remaining pull source if they are some conflict.
         if update_conflict:
             break
     if update_conflict:
         return 1
     else:
         return 0
 
 
 @command(
     b'purge|clean',
     [
         (b'a', b'abort-on-err', None, _(b'abort if an error occurs')),
         (b'', b'all', None, _(b'purge ignored files too')),
         (b'i', b'ignored', None, _(b'purge only ignored files')),
         (b'', b'dirs', None, _(b'purge empty directories')),
         (b'', b'files', None, _(b'purge files')),
         (b'p', b'print', None, _(b'print filenames instead of deleting them')),
         (
             b'0',
             b'print0',
             None,
             _(
                 b'end filenames with NUL, for use with xargs'
                 b' (implies -p/--print)'
             ),
         ),
         (b'', b'confirm', None, _(b'ask before permanently deleting files')),
     ]
     + cmdutil.walkopts,
     _(b'hg purge [OPTION]... [DIR]...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
 )
 def purge(ui, repo, *dirs, **opts):
     """removes files not tracked by Mercurial
 
     Delete files not known to Mercurial. This is useful to test local
     and uncommitted changes in an otherwise-clean source tree.
 
     This means that purge will delete the following by default:
 
     - Unknown files: files marked with "?" by :hg:`status`
     - Empty directories: in fact Mercurial ignores directories unless
       they contain files under source control management
 
     But it will leave untouched:
 
     - Modified and unmodified tracked files
     - Ignored files (unless -i or --all is specified)
     - New files added to the repository (with :hg:`add`)
 
     The --files and --dirs options can be used to direct purge to delete
     only files, only directories, or both. If neither option is given,
     both will be deleted.
 
     If directories are given on the command line, only files in these
     directories are considered.
 
     Be careful with purge, as you could irreversibly delete some files
     you forgot to add to the repository. If you only want to print the
     list of files that this program would delete, use the --print
     option.
     """
     opts = pycompat.byteskwargs(opts)
     cmdutil.check_at_most_one_arg(opts, b'all', b'ignored')
 
     act = not opts.get(b'print')
     eol = b'\n'
     if opts.get(b'print0'):
         eol = b'\0'
         act = False  # --print0 implies --print
     if opts.get(b'all', False):
         ignored = True
         unknown = True
     else:
         ignored = opts.get(b'ignored', False)
         unknown = not ignored
 
     removefiles = opts.get(b'files')
     removedirs = opts.get(b'dirs')
     confirm = opts.get(b'confirm')
     if confirm is None:
         try:
             extensions.find(b'purge')
             confirm = False
         except KeyError:
             confirm = True
 
     if not removefiles and not removedirs:
         removefiles = True
         removedirs = True
 
     match = scmutil.match(repo[None], dirs, opts)
 
     paths = mergemod.purge(
         repo,
         match,
         unknown=unknown,
         ignored=ignored,
         removeemptydirs=removedirs,
         removefiles=removefiles,
         abortonerror=opts.get(b'abort_on_err'),
         noop=not act,
         confirm=confirm,
     )
 
     for path in paths:
         if not act:
             ui.write(b'%s%s' % (path, eol))
 
 
 @command(
     b'push',
     [
         (b'f', b'force', None, _(b'force push')),
         (
             b'r',
             b'rev',
             [],
             _(b'a changeset intended to be included in the destination'),
             _(b'REV'),
         ),
         (b'B', b'bookmark', [], _(b"bookmark to push"), _(b'BOOKMARK')),
         (b'', b'all-bookmarks', None, _(b"push all bookmarks (EXPERIMENTAL)")),
         (
             b'b',
             b'branch',
             [],
             _(b'a specific branch you would like to push'),
             _(b'BRANCH'),
         ),
         (b'', b'new-branch', False, _(b'allow pushing a new branch')),
         (
             b'',
             b'pushvars',
             [],
             _(b'variables that can be sent to server (ADVANCED)'),
         ),
         (
             b'',
             b'publish',
             False,
             _(b'push the changeset as public (EXPERIMENTAL)'),
         ),
     ]
     + remoteopts,
     _(b'[-f] [-r REV]... [-e CMD] [--remotecmd CMD] [DEST]...'),
     helpcategory=command.CATEGORY_REMOTE_REPO_MANAGEMENT,
     helpbasic=True,
 )
 def push(ui, repo, *dests, **opts):
     """push changes to the specified destination
 
     Push changesets from the local repository to the specified
     destination.
 
     This operation is symmetrical to pull: it is identical to a pull
     in the destination repository from the current one.
 
     By default, push will not allow creation of new heads at the
     destination, since multiple heads would make it unclear which head
     to use. In this situation, it is recommended to pull and merge
     before pushing.
 
     Use --new-branch if you want to allow push to create a new named
     branch that is not present at the destination. This allows you to
     only create a new branch without forcing other changes.
 
     .. note::
 
        Extra care should be taken with the -f/--force option,
        which will push all new heads on all branches, an action which will
        almost always cause confusion for collaborators.
 
     If -r/--rev is used, the specified revision and all its ancestors
     will be pushed to the remote repository.
 
     If -B/--bookmark is used, the specified bookmarked revision, its
     ancestors, and the bookmark will be pushed to the remote
     repository. Specifying ``.`` is equivalent to specifying the active
     bookmark's name. Use the --all-bookmarks option for pushing all
     current bookmarks.
 
     Please see :hg:`help urls` for important details about ``ssh://``
     URLs. If DESTINATION is omitted, a default path will be used.
 
     When passed multiple destinations, push will process them one after the
     other, but stop should an error occur.
 
     .. container:: verbose
 
         The --pushvars option sends strings to the server that become
         environment variables prepended with ``HG_USERVAR_``. For example,
         ``--pushvars ENABLE_FEATURE=true``, provides the server side hooks with
         ``HG_USERVAR_ENABLE_FEATURE=true`` as part of their environment.
 
         pushvars can provide for user-overridable hooks as well as set debug
         levels. One example is having a hook that blocks commits containing
         conflict markers, but enables the user to override the hook if the file
         is using conflict markers for testing purposes or the file format has
         strings that look like conflict markers.
 
         By default, servers will ignore `--pushvars`. To enable it add the
         following to your configuration file::
 
             [push]
             pushvars.server = true
 
     Returns 0 if push was successful, 1 if nothing to push.
     """
 
     opts = pycompat.byteskwargs(opts)
 
     if opts.get(b'all_bookmarks'):
         cmdutil.check_incompatible_arguments(
             opts,
             b'all_bookmarks',
             [b'bookmark', b'rev'],
         )
         opts[b'bookmark'] = list(repo._bookmarks)
 
     if opts.get(b'bookmark'):
         ui.setconfig(b'bookmarks', b'pushing', opts[b'bookmark'], b'push')
         for b in opts[b'bookmark']:
             # translate -B options to -r so changesets get pushed
             b = repo._bookmarks.expandname(b)
             if b in repo._bookmarks:
                 opts.setdefault(b'rev', []).append(b)
             else:
                 # if we try to push a deleted bookmark, translate it to null
                 # this lets simultaneous -r, -b options continue working
                 opts.setdefault(b'rev', []).append(b"null")
 
     some_pushed = False
     result = 0
     for path in urlutil.get_push_paths(repo, ui, dests):
         dest = path.pushloc or path.loc
         branches = (path.branch, opts.get(b'branch') or [])
         ui.status(_(b'pushing to %s\n') % urlutil.hidepassword(dest))
         revs, checkout = hg.addbranchrevs(
             repo, repo, branches, opts.get(b'rev')
         )
         other = hg.peer(repo, opts, dest)
 
         try:
             if revs:
                 revs = [repo[r].node() for r in scmutil.revrange(repo, revs)]
                 if not revs:
                     raise error.InputError(
                         _(b"specified revisions evaluate to an empty set"),
                         hint=_(b"use different revision arguments"),
                     )
             elif path.pushrev:
                 # It doesn't make any sense to specify ancestor revisions. So limit
                 # to DAG heads to make discovery simpler.
                 expr = revsetlang.formatspec(b'heads(%r)', path.pushrev)
                 revs = scmutil.revrange(repo, [expr])
                 revs = [repo[rev].node() for rev in revs]
                 if not revs:
                     raise error.InputError(
                         _(
                             b'default push revset for path evaluates to an empty set'
                         )
                     )
             elif ui.configbool(b'commands', b'push.require-revs'):
                 raise error.InputError(
                     _(b'no revisions specified to push'),
                     hint=_(b'did you mean "hg push -r ."?'),
                 )
 
             repo._subtoppath = dest
             try:
                 # push subrepos depth-first for coherent ordering
                 c = repo[b'.']
                 subs = c.substate  # only repos that are committed
                 for s in sorted(subs):
                     sub_result = c.sub(s).push(opts)
                     if sub_result == 0:
                         return 1
             finally:
                 del repo._subtoppath
 
             opargs = dict(
                 opts.get(b'opargs', {})
             )  # copy opargs since we may mutate it
             opargs.setdefault(b'pushvars', []).extend(opts.get(b'pushvars', []))
 
             pushop = exchange.push(
                 repo,
                 other,
                 opts.get(b'force'),
                 revs=revs,
                 newbranch=opts.get(b'new_branch'),
                 bookmarks=opts.get(b'bookmark', ()),
                 publish=opts.get(b'publish'),
                 opargs=opargs,
             )
 
             if pushop.cgresult == 0:
                 result = 1
             elif pushop.cgresult is not None:
                 some_pushed = True
 
             if pushop.bkresult is not None:
                 if pushop.bkresult == 2:
                     result = 2
                 elif not result and pushop.bkresult:
                     result = 2
 
             if result:
                 break
 
         finally:
             other.close()
     if result == 0 and not some_pushed:
         result = 1
     return result
 
 
 @command(
     b'recover',
     [
         (b'', b'verify', False, b"run `hg verify` after successful recover"),
     ],
     helpcategory=command.CATEGORY_MAINTENANCE,
 )
 def recover(ui, repo, **opts):
     """roll back an interrupted transaction
 
     Recover from an interrupted commit or pull.
 
     This command tries to fix the repository status after an
     interrupted operation. It should only be necessary when Mercurial
     suggests it.
 
     Returns 0 if successful, 1 if nothing to recover or verify fails.
     """
     ret = repo.recover()
     if ret:
         if opts['verify']:
             return hg.verify(repo)
         else:
             msg = _(
                 b"(verify step skipped, run `hg verify` to check your "
                 b"repository content)\n"
             )
             ui.warn(msg)
             return 0
     return 1
 
 
 @command(
     b'remove|rm',
     [
         (b'A', b'after', None, _(b'record delete for missing files')),
         (b'f', b'force', None, _(b'forget added files, delete modified files')),
     ]
     + subrepoopts
     + walkopts
     + dryrunopts,
     _(b'[OPTION]... FILE...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
     helpbasic=True,
     inferrepo=True,
 )
 def remove(ui, repo, *pats, **opts):
     """remove the specified files on the next commit
 
     Schedule the indicated files for removal from the current branch.
 
     This command schedules the files to be removed at the next commit.
     To undo a remove before that, see :hg:`revert`. To undo added
     files, see :hg:`forget`.
 
     .. container:: verbose
 
       -A/--after can be used to remove only files that have already
       been deleted, -f/--force can be used to force deletion, and -Af
       can be used to remove files from the next revision without
       deleting them from the working directory.
 
       The following table details the behavior of remove for different
       file states (columns) and option combinations (rows). The file
       states are Added [A], Clean [C], Modified [M] and Missing [!]
       (as reported by :hg:`status`). The actions are Warn, Remove
       (from branch) and Delete (from disk):
 
       ========= == == == ==
       opt/state A  C  M  !
       ========= == == == ==
       none      W  RD W  R
       -f        R  RD RD R
       -A        W  W  W  R
       -Af       R  R  R  R
       ========= == == == ==
 
       .. note::
 
          :hg:`remove` never deletes files in Added [A] state from the
          working directory, not even if ``--force`` is specified.
 
     Returns 0 on success, 1 if any warnings encountered.
     """
 
     opts = pycompat.byteskwargs(opts)
     after, force = opts.get(b'after'), opts.get(b'force')
     dryrun = opts.get(b'dry_run')
     if not pats and not after:
         raise error.InputError(_(b'no files specified'))
 
     m = scmutil.match(repo[None], pats, opts)
     subrepos = opts.get(b'subrepos')
     uipathfn = scmutil.getuipathfn(repo, legacyrelativevalue=True)
     return cmdutil.remove(
         ui, repo, m, b"", uipathfn, after, force, subrepos, dryrun=dryrun
     )
 
 
 @command(
     b'rename|move|mv',
     [
         (b'', b'forget', None, _(b'unmark a destination file as renamed')),
         (b'A', b'after', None, _(b'record a rename that has already occurred')),
         (
             b'',
             b'at-rev',
             b'',
             _(b'(un)mark renames in the given revision (EXPERIMENTAL)'),
             _(b'REV'),
         ),
         (
             b'f',
             b'force',
             None,
             _(b'forcibly move over an existing managed file'),
         ),
     ]
     + walkopts
     + dryrunopts,
     _(b'[OPTION]... SOURCE... DEST'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
 )
 def rename(ui, repo, *pats, **opts):
     """rename files; equivalent of copy + remove
 
     Mark dest as copies of sources; mark sources for deletion. If dest
     is a directory, copies are put in that directory. If dest is a
     file, there can only be one source.
 
     By default, this command copies the contents of files as they
     exist in the working directory. If invoked with -A/--after, the
     operation is recorded, but no copying is performed.
 
     To undo marking a destination file as renamed, use --forget. With that
     option, all given (positional) arguments are unmarked as renames. The
     destination file(s) will be left in place (still tracked). The source
     file(s) will not be restored. Note that :hg:`rename --forget` behaves
     the same way as :hg:`copy --forget`.
 
     This command takes effect with the next commit by default.
 
     Returns 0 on success, 1 if errors are encountered.
     """
     opts = pycompat.byteskwargs(opts)
     with repo.wlock():
         return cmdutil.copy(ui, repo, pats, opts, rename=True)
 
 
 @command(
     b'resolve',
     [
         (b'a', b'all', None, _(b'select all unresolved files')),
         (b'l', b'list', None, _(b'list state of files needing merge')),
         (b'm', b'mark', None, _(b'mark files as resolved')),
         (b'u', b'unmark', None, _(b'mark files as unresolved')),
         (b'n', b'no-status', None, _(b'hide status prefix')),
         (b'', b're-merge', None, _(b're-merge files')),
     ]
     + mergetoolopts
     + walkopts
     + formatteropts,
     _(b'[OPTION]... [FILE]...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
     inferrepo=True,
 )
 def resolve(ui, repo, *pats, **opts):
     """redo merges or set/view the merge status of files
 
     Merges with unresolved conflicts are often the result of
     non-interactive merging using the ``internal:merge`` configuration
     setting, or a command-line merge tool like ``diff3``. The resolve
     command is used to manage the files involved in a merge, after
     :hg:`merge` has been run, and before :hg:`commit` is run (i.e. the
     working directory must have two parents). See :hg:`help
     merge-tools` for information on configuring merge tools.
 
     The resolve command can be used in the following ways:
 
     - :hg:`resolve [--re-merge] [--tool TOOL] FILE...`: attempt to re-merge
       the specified files, discarding any previous merge attempts. Re-merging
       is not performed for files already marked as resolved. Use ``--all/-a``
       to select all unresolved files. ``--tool`` can be used to specify
       the merge tool used for the given files. It overrides the HGMERGE
       environment variable and your configuration files.  Previous file
       contents are saved with a ``.orig`` suffix.
 
     - :hg:`resolve -m [FILE]`: mark a file as having been resolved
       (e.g. after having manually fixed-up the files). The default is
       to mark all unresolved files.
 
     - :hg:`resolve -u [FILE]...`: mark a file as unresolved. The
       default is to mark all resolved files.
 
     - :hg:`resolve -l`: list files which had or still have conflicts.
       In the printed list, ``U`` = unresolved and ``R`` = resolved.
       You can use ``set:unresolved()`` or ``set:resolved()`` to filter
       the list. See :hg:`help filesets` for details.
 
     .. note::
 
        Mercurial will not let you commit files with unresolved merge
        conflicts. You must use :hg:`resolve -m ...` before you can
        commit after a conflicting merge.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions. See also :hg:`help templates`.
 
       :mergestatus: String. Character denoting merge conflicts, ``U`` or ``R``.
       :path:    String. Repository-absolute path of the file.
 
     Returns 0 on success, 1 if any files fail a resolve attempt.
     """
 
     opts = pycompat.byteskwargs(opts)
     confirm = ui.configbool(b'commands', b'resolve.confirm')
     flaglist = b'all mark unmark list no_status re_merge'.split()
     all, mark, unmark, show, nostatus, remerge = [opts.get(o) for o in flaglist]
 
     actioncount = len(list(filter(None, [show, mark, unmark, remerge])))
     if actioncount > 1:
         raise error.InputError(_(b"too many actions specified"))
     elif actioncount == 0 and ui.configbool(
         b'commands', b'resolve.explicit-re-merge'
     ):
         hint = _(b'use --mark, --unmark, --list or --re-merge')
         raise error.InputError(_(b'no action specified'), hint=hint)
     if pats and all:
         raise error.InputError(_(b"can't specify --all and patterns"))
     if not (all or pats or show or mark or unmark):
         raise error.InputError(
             _(b'no files or directories specified'),
             hint=b'use --all to re-merge all unresolved files',
         )
 
     if confirm:
         if all:
             if ui.promptchoice(
                 _(b're-merge all unresolved files (yn)?$$ &Yes $$ &No')
             ):
                 raise error.CanceledError(_(b'user quit'))
         if mark and not pats:
             if ui.promptchoice(
                 _(
                     b'mark all unresolved files as resolved (yn)?'
                     b'$$ &Yes $$ &No'
                 )
             ):
                 raise error.CanceledError(_(b'user quit'))
         if unmark and not pats:
             if ui.promptchoice(
                 _(
                     b'mark all resolved files as unresolved (yn)?'
                     b'$$ &Yes $$ &No'
                 )
             ):
                 raise error.CanceledError(_(b'user quit'))
 
     uipathfn = scmutil.getuipathfn(repo)
 
     if show:
         ui.pager(b'resolve')
         fm = ui.formatter(b'resolve', opts)
         ms = mergestatemod.mergestate.read(repo)
         wctx = repo[None]
         m = scmutil.match(wctx, pats, opts)
 
         # Labels and keys based on merge state.  Unresolved path conflicts show
         # as 'P'.  Resolved path conflicts show as 'R', the same as normal
         # resolved conflicts.
         mergestateinfo = {
             mergestatemod.MERGE_RECORD_UNRESOLVED: (
                 b'resolve.unresolved',
                 b'U',
             ),
             mergestatemod.MERGE_RECORD_RESOLVED: (b'resolve.resolved', b'R'),
             mergestatemod.MERGE_RECORD_UNRESOLVED_PATH: (
                 b'resolve.unresolved',
                 b'P',
             ),
             mergestatemod.MERGE_RECORD_RESOLVED_PATH: (
                 b'resolve.resolved',
                 b'R',
             ),
         }
 
         for f in ms:
             if not m(f):
                 continue
 
             label, key = mergestateinfo[ms[f]]
             fm.startitem()
             fm.context(ctx=wctx)
             fm.condwrite(not nostatus, b'mergestatus', b'%s ', key, label=label)
             fm.data(path=f)
             fm.plain(b'%s\n' % uipathfn(f), label=label)
         fm.end()
         return 0
 
     with repo.wlock():
         ms = mergestatemod.mergestate.read(repo)
 
         if not (ms.active() or repo.dirstate.p2() != repo.nullid):
             raise error.StateError(
                 _(b'resolve command not applicable when not merging')
             )
 
         wctx = repo[None]
         m = scmutil.match(wctx, pats, opts)
         ret = 0
         didwork = False
 
         tocomplete = []
         hasconflictmarkers = []
         if mark:
             markcheck = ui.config(b'commands', b'resolve.mark-check')
             if markcheck not in [b'warn', b'abort']:
                 # Treat all invalid / unrecognized values as 'none'.
                 markcheck = False
         for f in ms:
             if not m(f):
                 continue
 
             didwork = True
 
             # path conflicts must be resolved manually
             if ms[f] in (
                 mergestatemod.MERGE_RECORD_UNRESOLVED_PATH,
                 mergestatemod.MERGE_RECORD_RESOLVED_PATH,
             ):
                 if mark:
                     ms.mark(f, mergestatemod.MERGE_RECORD_RESOLVED_PATH)
                 elif unmark:
                     ms.mark(f, mergestatemod.MERGE_RECORD_UNRESOLVED_PATH)
                 elif ms[f] == mergestatemod.MERGE_RECORD_UNRESOLVED_PATH:
                     ui.warn(
                         _(b'%s: path conflict must be resolved manually\n')
                         % uipathfn(f)
                     )
                 continue
 
             if mark:
                 if markcheck:
                     fdata = repo.wvfs.tryread(f)
                     if (
                         filemerge.hasconflictmarkers(fdata)
                         and ms[f] != mergestatemod.MERGE_RECORD_RESOLVED
                     ):
                         hasconflictmarkers.append(f)
                 ms.mark(f, mergestatemod.MERGE_RECORD_RESOLVED)
             elif unmark:
                 ms.mark(f, mergestatemod.MERGE_RECORD_UNRESOLVED)
             else:
                 # backup pre-resolve (merge uses .orig for its own purposes)
                 a = repo.wjoin(f)
                 try:
                     util.copyfile(a, a + b".resolve")
                 except (IOError, OSError) as inst:
                     if inst.errno != errno.ENOENT:
                         raise
 
                 try:
                     # preresolve file
                     overrides = {(b'ui', b'forcemerge'): opts.get(b'tool', b'')}
                     with ui.configoverride(overrides, b'resolve'):
                         complete, r = ms.preresolve(f, wctx)
                     if not complete:
                         tocomplete.append(f)
                     elif r:
                         ret = 1
                 finally:
                     ms.commit()
 
                 # replace filemerge's .orig file with our resolve file, but only
                 # for merges that are complete
                 if complete:
                     try:
                         util.rename(
                             a + b".resolve", scmutil.backuppath(ui, repo, f)
                         )
                     except OSError as inst:
                         if inst.errno != errno.ENOENT:
                             raise
 
         if hasconflictmarkers:
             ui.warn(
                 _(
                     b'warning: the following files still have conflict '
                     b'markers:\n'
                 )
                 + b''.join(
                     b'  ' + uipathfn(f) + b'\n' for f in hasconflictmarkers
                 )
             )
             if markcheck == b'abort' and not all and not pats:
                 raise error.StateError(
                     _(b'conflict markers detected'),
                     hint=_(b'use --all to mark anyway'),
                 )
 
         for f in tocomplete:
             try:
                 # resolve file
                 overrides = {(b'ui', b'forcemerge'): opts.get(b'tool', b'')}
                 with ui.configoverride(overrides, b'resolve'):
                     r = ms.resolve(f, wctx)
                 if r:
                     ret = 1
             finally:
                 ms.commit()
 
             # replace filemerge's .orig file with our resolve file
             a = repo.wjoin(f)
             try:
                 util.rename(a + b".resolve", scmutil.backuppath(ui, repo, f))
             except OSError as inst:
                 if inst.errno != errno.ENOENT:
                     raise
 
         ms.commit()
         branchmerge = repo.dirstate.p2() != repo.nullid
         # resolve is not doing a parent change here, however, `record updates`
         # will call some dirstate API that at intended for parent changes call.
         # Ideally we would not need this and could implement a lighter version
         # of the recordupdateslogic that will not have to deal with the part
         # related to parent changes. However this would requires that:
         # - we are sure we passed around enough information at update/merge
         #   time to no longer needs it at `hg resolve time`
         # - we are sure we store that information well enough to be able to reuse it
         # - we are the necessary logic to reuse it right.
         #
         # All this should eventually happens, but in the mean time, we use this
         # context manager slightly out of the context it should be.
         with repo.dirstate.parentchange():
             mergestatemod.recordupdates(repo, ms.actions(), branchmerge, None)
 
         if not didwork and pats:
             hint = None
             if not any([p for p in pats if p.find(b':') >= 0]):
                 pats = [b'path:%s' % p for p in pats]
                 m = scmutil.match(wctx, pats, opts)
                 for f in ms:
                     if not m(f):
                         continue
 
                     def flag(o):
                         if o == b're_merge':
                             return b'--re-merge '
                         return b'-%s ' % o[0:1]
 
                     flags = b''.join([flag(o) for o in flaglist if opts.get(o)])
                     hint = _(b"(try: hg resolve %s%s)\n") % (
                         flags,
                         b' '.join(pats),
                     )
                     break
             ui.warn(_(b"arguments do not match paths that need resolving\n"))
             if hint:
                 ui.warn(hint)
 
     unresolvedf = ms.unresolvedcount()
     if not unresolvedf:
         ui.status(_(b'(no more unresolved files)\n'))
         cmdutil.checkafterresolved(repo)
 
     return ret
 
 
 @command(
     b'revert',
     [
         (b'a', b'all', None, _(b'revert all changes when no arguments given')),
         (b'd', b'date', b'', _(b'tipmost revision matching date'), _(b'DATE')),
         (b'r', b'rev', b'', _(b'revert to the specified revision'), _(b'REV')),
         (b'C', b'no-backup', None, _(b'do not save backup copies of files')),
         (b'i', b'interactive', None, _(b'interactively select the changes')),
     ]
     + walkopts
     + dryrunopts,
     _(b'[OPTION]... [-r REV] [NAME]...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
 )
 def revert(ui, repo, *pats, **opts):
     """restore files to their checkout state
 
     .. note::
 
        To check out earlier revisions, you should use :hg:`update REV`.
        To cancel an uncommitted merge (and lose your changes),
        use :hg:`merge --abort`.
 
     With no revision specified, revert the specified files or directories
     to the contents they had in the parent of the working directory.
     This restores the contents of files to an unmodified
     state and unschedules adds, removes, copies, and renames. If the
     working directory has two parents, you must explicitly specify a
     revision.
 
     Using the -r/--rev or -d/--date options, revert the given files or
     directories to their states as of a specific revision. Because
     revert does not change the working directory parents, this will
     cause these files to appear modified. This can be helpful to "back
     out" some or all of an earlier change. See :hg:`backout` for a
     related method.
 
     Modified files are saved with a .orig suffix before reverting.
     To disable these backups, use --no-backup. It is possible to store
     the backup files in a custom directory relative to the root of the
     repository by setting the ``ui.origbackuppath`` configuration
     option.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     See :hg:`help backout` for a way to reverse the effect of an
     earlier changeset.
 
     Returns 0 on success.
     """
 
     opts = pycompat.byteskwargs(opts)
     if opts.get(b"date"):
         cmdutil.check_incompatible_arguments(opts, b'date', [b'rev'])
         opts[b"rev"] = cmdutil.finddate(ui, repo, opts[b"date"])
 
     parent, p2 = repo.dirstate.parents()
     if not opts.get(b'rev') and p2 != repo.nullid:
         # revert after merge is a trap for new users (issue2915)
         raise error.InputError(
             _(b'uncommitted merge with no revision specified'),
             hint=_(b"use 'hg update' or see 'hg help revert'"),
         )
 
     rev = opts.get(b'rev')
     if rev:
         repo = scmutil.unhidehashlikerevs(repo, [rev], b'nowarn')
     ctx = scmutil.revsingle(repo, rev)
 
     if not (
         pats
         or opts.get(b'include')
         or opts.get(b'exclude')
         or opts.get(b'all')
         or opts.get(b'interactive')
     ):
         msg = _(b"no files or directories specified")
         if p2 != repo.nullid:
             hint = _(
                 b"uncommitted merge, use --all to discard all changes,"
                 b" or 'hg update -C .' to abort the merge"
             )
             raise error.InputError(msg, hint=hint)
         dirty = any(repo.status())
         node = ctx.node()
         if node != parent:
             if dirty:
                 hint = (
                     _(
                         b"uncommitted changes, use --all to discard all"
                         b" changes, or 'hg update %d' to update"
                     )
                     % ctx.rev()
                 )
             else:
                 hint = (
                     _(
                         b"use --all to revert all files,"
                         b" or 'hg update %d' to update"
                     )
                     % ctx.rev()
                 )
         elif dirty:
             hint = _(b"uncommitted changes, use --all to discard all changes")
         else:
             hint = _(b"use --all to revert all files")
         raise error.InputError(msg, hint=hint)
 
     return cmdutil.revert(ui, repo, ctx, *pats, **pycompat.strkwargs(opts))
 
 
 @command(
     b'rollback',
     dryrunopts + [(b'f', b'force', False, _(b'ignore safety measures'))],
     helpcategory=command.CATEGORY_MAINTENANCE,
 )
 def rollback(ui, repo, **opts):
     """roll back the last transaction (DANGEROUS) (DEPRECATED)
 
     Please use :hg:`commit --amend` instead of rollback to correct
     mistakes in the last commit.
 
     This command should be used with care. There is only one level of
     rollback, and there is no way to undo a rollback. It will also
     restore the dirstate at the time of the last transaction, losing
     any dirstate changes since that time. This command does not alter
     the working directory.
 
     Transactions are used to encapsulate the effects of all commands
     that create new changesets or propagate existing changesets into a
     repository.
 
     .. container:: verbose
 
       For example, the following commands are transactional, and their
       effects can be rolled back:
 
       - commit
       - import
       - pull
       - push (with this repository as the destination)
       - unbundle
 
       To avoid permanent data loss, rollback will refuse to rollback a
       commit transaction if it isn't checked out. Use --force to
       override this protection.
 
       The rollback command can be entirely disabled by setting the
       ``ui.rollback`` configuration setting to false. If you're here
       because you want to use rollback and it's disabled, you can
       re-enable the command by setting ``ui.rollback`` to true.
 
     This command is not intended for use on public repositories. Once
     changes are visible for pull by other users, rolling a transaction
     back locally is ineffective (someone else may already have pulled
     the changes). Furthermore, a race is possible with readers of the
     repository; for example an in-progress pull from the repository
     may fail if a rollback is performed.
 
     Returns 0 on success, 1 if no rollback data is available.
     """
     if not ui.configbool(b'ui', b'rollback'):
         raise error.Abort(
             _(b'rollback is disabled because it is unsafe'),
             hint=b'see `hg help -v rollback` for information',
         )
     return repo.rollback(dryrun=opts.get('dry_run'), force=opts.get('force'))
 
 
 @command(
     b'root',
     [] + formatteropts,
     intents={INTENT_READONLY},
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
 )
 def root(ui, repo, **opts):
     """print the root (top) of the current working directory
 
     Print the root directory of the current repository.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions. See also :hg:`help templates`.
 
       :hgpath:    String. Path to the .hg directory.
       :storepath: String. Path to the directory holding versioned data.
 
     Returns 0 on success.
     """
     opts = pycompat.byteskwargs(opts)
     with ui.formatter(b'root', opts) as fm:
         fm.startitem()
         fm.write(b'reporoot', b'%s\n', repo.root)
         fm.data(hgpath=repo.path, storepath=repo.spath)
 
 
 @command(
     b'serve',
     [
         (
             b'A',
             b'accesslog',
             b'',
             _(b'name of access log file to write to'),
             _(b'FILE'),
         ),
         (b'd', b'daemon', None, _(b'run server in background')),
         (b'', b'daemon-postexec', [], _(b'used internally by daemon mode')),
         (
             b'E',
             b'errorlog',
             b'',
             _(b'name of error log file to write to'),
             _(b'FILE'),
         ),
         # use string type, then we can check if something was passed
         (
             b'p',
             b'port',
             b'',
             _(b'port to listen on (default: 8000)'),
             _(b'PORT'),
         ),
         (
             b'a',
             b'address',
             b'',
             _(b'address to listen on (default: all interfaces)'),
             _(b'ADDR'),
         ),
         (
             b'',
             b'prefix',
             b'',
             _(b'prefix path to serve from (default: server root)'),
             _(b'PREFIX'),
         ),
         (
             b'n',
             b'name',
             b'',
             _(b'name to show in web pages (default: working directory)'),
             _(b'NAME'),
         ),
         (
             b'',
             b'web-conf',
             b'',
             _(b"name of the hgweb config file (see 'hg help hgweb')"),
             _(b'FILE'),
         ),
         (
             b'',
             b'webdir-conf',
             b'',
             _(b'name of the hgweb config file (DEPRECATED)'),
             _(b'FILE'),
         ),
         (
             b'',
             b'pid-file',
             b'',
             _(b'name of file to write process ID to'),
             _(b'FILE'),
         ),
         (b'', b'stdio', None, _(b'for remote clients (ADVANCED)')),
         (
             b'',
             b'cmdserver',
             b'',
             _(b'for remote clients (ADVANCED)'),
             _(b'MODE'),
         ),
         (b't', b'templates', b'', _(b'web templates to use'), _(b'TEMPLATE')),
         (b'', b'style', b'', _(b'template style to use'), _(b'STYLE')),
         (b'6', b'ipv6', None, _(b'use IPv6 in addition to IPv4')),
         (b'', b'certificate', b'', _(b'SSL certificate file'), _(b'FILE')),
         (b'', b'print-url', None, _(b'start and print only the URL')),
     ]
     + subrepoopts,
     _(b'[OPTION]...'),
     helpcategory=command.CATEGORY_REMOTE_REPO_MANAGEMENT,
     helpbasic=True,
     optionalrepo=True,
 )
 def serve(ui, repo, **opts):
     """start stand-alone webserver
 
     Start a local HTTP repository browser and pull server. You can use
     this for ad-hoc sharing and browsing of repositories. It is
     recommended to use a real web server to serve a repository for
     longer periods of time.
 
     Please note that the server does not implement access control.
     This means that, by default, anybody can read from the server and
     nobody can write to it by default. Set the ``web.allow-push``
     option to ``*`` to allow everybody to push to the server. You
     should use a real web server if you need to authenticate users.
 
     By default, the server logs accesses to stdout and errors to
     stderr. Use the -A/--accesslog and -E/--errorlog options to log to
     files.
 
     To have the server choose a free port number to listen on, specify
     a port number of 0; in this case, the server will print the port
     number it uses.
 
     Returns 0 on success.
     """
 
     cmdutil.check_incompatible_arguments(opts, 'stdio', ['cmdserver'])
     opts = pycompat.byteskwargs(opts)
     if opts[b"print_url"] and ui.verbose:
         raise error.InputError(_(b"cannot use --print-url with --verbose"))
 
     if opts[b"stdio"]:
         if repo is None:
             raise error.RepoError(
                 _(b"there is no Mercurial repository here (.hg not found)")
             )
         s = wireprotoserver.sshserver(ui, repo)
         s.serve_forever()
         return
 
     service = server.createservice(ui, repo, opts)
     return server.runservice(opts, initfn=service.init, runfn=service.run)
 
 
 @command(
     b'shelve',
     [
         (
             b'A',
             b'addremove',
             None,
             _(b'mark new/missing files as added/removed before shelving'),
         ),
         (b'u', b'unknown', None, _(b'store unknown files in the shelve')),
         (b'', b'cleanup', None, _(b'delete all shelved changes')),
         (
             b'',
             b'date',
             b'',
             _(b'shelve with the specified commit date'),
             _(b'DATE'),
         ),
         (b'd', b'delete', None, _(b'delete the named shelved change(s)')),
         (b'e', b'edit', False, _(b'invoke editor on commit messages')),
         (
             b'k',
             b'keep',
             False,
             _(b'shelve, but keep changes in the working directory'),
         ),
         (b'l', b'list', None, _(b'list current shelves')),
         (b'm', b'message', b'', _(b'use text as shelve message'), _(b'TEXT')),
         (
             b'n',
             b'name',
             b'',
             _(b'use the given name for the shelved commit'),
             _(b'NAME'),
         ),
         (
             b'p',
             b'patch',
             None,
             _(
                 b'output patches for changes (provide the names of the shelved '
                 b'changes as positional arguments)'
             ),
         ),
         (b'i', b'interactive', None, _(b'interactive mode')),
         (
             b'',
             b'stat',
             None,
             _(
                 b'output diffstat-style summary of changes (provide the names of '
                 b'the shelved changes as positional arguments)'
             ),
         ),
     ]
     + cmdutil.walkopts,
     _(b'hg shelve [OPTION]... [FILE]...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
 )
 def shelve(ui, repo, *pats, **opts):
     """save and set aside changes from the working directory
 
     Shelving takes files that "hg status" reports as not clean, saves
     the modifications to a bundle (a shelved change), and reverts the
     files so that their state in the working directory becomes clean.
 
     To restore these changes to the working directory, using "hg
     unshelve"; this will work even if you switch to a different
     commit.
 
     When no files are specified, "hg shelve" saves all not-clean
     files. If specific files or directories are named, only changes to
     those files are shelved.
 
     In bare shelve (when no files are specified, without interactive,
     include and exclude option), shelving remembers information if the
     working directory was on newly created branch, in other words working
     directory was on different branch than its first parent. In this
     situation unshelving restores branch information to the working directory.
 
     Each shelved change has a name that makes it easier to find later.
     The name of a shelved change defaults to being based on the active
     bookmark, or if there is no active bookmark, the current named
     branch.  To specify a different name, use ``--name``.
 
     To see a list of existing shelved changes, use the ``--list``
     option. For each shelved change, this will print its name, age,
     and description; use ``--patch`` or ``--stat`` for more details.
 
     To delete specific shelved changes, use ``--delete``. To delete
     all shelved changes, use ``--cleanup``.
     """
     opts = pycompat.byteskwargs(opts)
     allowables = [
         (b'addremove', {b'create'}),  # 'create' is pseudo action
         (b'unknown', {b'create'}),
         (b'cleanup', {b'cleanup'}),
         #       ('date', {'create'}), # ignored for passing '--date "0 0"' in tests
         (b'delete', {b'delete'}),
         (b'edit', {b'create'}),
         (b'keep', {b'create'}),
         (b'list', {b'list'}),
         (b'message', {b'create'}),
         (b'name', {b'create'}),
         (b'patch', {b'patch', b'list'}),
         (b'stat', {b'stat', b'list'}),
     ]
 
     def checkopt(opt):
         if opts.get(opt):
             for i, allowable in allowables:
                 if opts[i] and opt not in allowable:
                     raise error.InputError(
                         _(
                             b"options '--%s' and '--%s' may not be "
                             b"used together"
                         )
                         % (opt, i)
                     )
             return True
 
     if checkopt(b'cleanup'):
         if pats:
             raise error.InputError(
                 _(b"cannot specify names when using '--cleanup'")
             )
         return shelvemod.cleanupcmd(ui, repo)
     elif checkopt(b'delete'):
         return shelvemod.deletecmd(ui, repo, pats)
     elif checkopt(b'list'):
         return shelvemod.listcmd(ui, repo, pats, opts)
     elif checkopt(b'patch') or checkopt(b'stat'):
         return shelvemod.patchcmds(ui, repo, pats, opts)
     else:
         return shelvemod.createcmd(ui, repo, pats, opts)
 
 
 _NOTTERSE = b'nothing'
 
 
 @command(
     b'status|st',
     [
         (b'A', b'all', None, _(b'show status of all files')),
         (b'm', b'modified', None, _(b'show only modified files')),
         (b'a', b'added', None, _(b'show only added files')),
         (b'r', b'removed', None, _(b'show only removed files')),
         (b'd', b'deleted', None, _(b'show only missing files')),
         (b'c', b'clean', None, _(b'show only files without changes')),
         (b'u', b'unknown', None, _(b'show only unknown (not tracked) files')),
         (b'i', b'ignored', None, _(b'show only ignored files')),
         (b'n', b'no-status', None, _(b'hide status prefix')),
         (b't', b'terse', _NOTTERSE, _(b'show the terse output (EXPERIMENTAL)')),
         (
             b'C',
             b'copies',
             None,
             _(b'show source of copied files (DEFAULT: ui.statuscopies)'),
         ),
         (
             b'0',
             b'print0',
             None,
             _(b'end filenames with NUL, for use with xargs'),
         ),
         (b'', b'rev', [], _(b'show difference from revision'), _(b'REV')),
         (
             b'',
             b'change',
             b'',
             _(b'list the changed files of a revision'),
             _(b'REV'),
         ),
     ]
     + walkopts
     + subrepoopts
     + formatteropts,
     _(b'[OPTION]... [FILE]...'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
     helpbasic=True,
     inferrepo=True,
     intents={INTENT_READONLY},
 )
 def status(ui, repo, *pats, **opts):
     """show changed files in the working directory
 
     Show status of files in the repository. If names are given, only
     files that match are shown. Files that are clean or ignored or
     the source of a copy/move operation, are not listed unless
     -c/--clean, -i/--ignored, -C/--copies or -A/--all are given.
     Unless options described with "show only ..." are given, the
     options -mardu are used.
 
     Option -q/--quiet hides untracked (unknown and ignored) files
     unless explicitly requested with -u/--unknown or -i/--ignored.
 
     .. note::
 
        :hg:`status` may appear to disagree with diff if permissions have
        changed or a merge has occurred. The standard diff format does
        not report permission changes and diff only reports changes
        relative to one merge parent.
 
     If one revision is given, it is used as the base revision.
     If two revisions are given, the differences between them are
     shown. The --change option can also be used as a shortcut to list
     the changed files of a revision from its first parent.
 
     The codes used to show the status of files are::
 
       M = modified
       A = added
       R = removed
       C = clean
       ! = missing (deleted by non-hg command, but still tracked)
       ? = not tracked
       I = ignored
         = origin of the previous file (with --copies)
 
     .. container:: verbose
 
       The -t/--terse option abbreviates the output by showing only the directory
       name if all the files in it share the same status. The option takes an
       argument indicating the statuses to abbreviate: 'm' for 'modified', 'a'
       for 'added', 'r' for 'removed', 'd' for 'deleted', 'u' for 'unknown', 'i'
       for 'ignored' and 'c' for clean.
 
       It abbreviates only those statuses which are passed. Note that clean and
       ignored files are not displayed with '--terse ic' unless the -c/--clean
       and -i/--ignored options are also used.
 
       The -v/--verbose option shows information when the repository is in an
       unfinished merge, shelve, rebase state etc. You can have this behavior
       turned on by default by enabling the ``commands.status.verbose`` option.
 
       You can skip displaying some of these states by setting
       ``commands.status.skipstates`` to one or more of: 'bisect', 'graft',
       'histedit', 'merge', 'rebase', or 'unshelve'.
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions. See also :hg:`help templates`.
 
       :path:    String. Repository-absolute path of the file.
       :source:  String. Repository-absolute path of the file originated from.
                 Available if ``--copies`` is specified.
       :status:  String. Character denoting file's status.
 
       Examples:
 
       - show changes in the working directory relative to a
         changeset::
 
           hg status --rev 9353
 
       - show changes in the working directory relative to the
         current directory (see :hg:`help patterns` for more information)::
 
           hg status re:
 
       - show all changes including copies in an existing changeset::
 
           hg status --copies --change 9353
 
       - get a NUL separated list of added files, suitable for xargs::
 
           hg status -an0
 
       - show more information about the repository status, abbreviating
         added, removed, modified, deleted, and untracked paths::
 
           hg status -v -t mardu
 
     Returns 0 on success.
 
     """
 
     cmdutil.check_at_most_one_arg(opts, 'rev', 'change')
     opts = pycompat.byteskwargs(opts)
     revs = opts.get(b'rev')
     change = opts.get(b'change')
     terse = opts.get(b'terse')
     if terse is _NOTTERSE:
         if revs:
             terse = b''
         else:
             terse = ui.config(b'commands', b'status.terse')
 
     if revs and terse:
         msg = _(b'cannot use --terse with --rev')
         raise error.InputError(msg)
     elif change:
         repo = scmutil.unhidehashlikerevs(repo, [change], b'nowarn')
         ctx2 = scmutil.revsingle(repo, change, None)
         ctx1 = ctx2.p1()
     else:
         repo = scmutil.unhidehashlikerevs(repo, revs, b'nowarn')
         ctx1, ctx2 = scmutil.revpair(repo, revs)
 
     forcerelativevalue = None
     if ui.hasconfig(b'commands', b'status.relative'):
         forcerelativevalue = ui.configbool(b'commands', b'status.relative')
     uipathfn = scmutil.getuipathfn(
         repo,
         legacyrelativevalue=bool(pats),
         forcerelativevalue=forcerelativevalue,
     )
 
     if opts.get(b'print0'):
         end = b'\0'
     else:
         end = b'\n'
     states = b'modified added removed deleted unknown ignored clean'.split()
     show = [k for k in states if opts.get(k)]
     if opts.get(b'all'):
         show += ui.quiet and (states[:4] + [b'clean']) or states
 
     if not show:
         if ui.quiet:
             show = states[:4]
         else:
             show = states[:5]
 
     m = scmutil.match(ctx2, pats, opts)
     if terse:
         # we need to compute clean and unknown to terse
         stat = repo.status(
             ctx1.node(),
             ctx2.node(),
             m,
             b'ignored' in show or b'i' in terse,
             clean=True,
             unknown=True,
             listsubrepos=opts.get(b'subrepos'),
         )
 
         stat = cmdutil.tersedir(stat, terse)
     else:
         stat = repo.status(
             ctx1.node(),
             ctx2.node(),
             m,
             b'ignored' in show,
             b'clean' in show,
             b'unknown' in show,
             opts.get(b'subrepos'),
         )
 
     changestates = zip(
         states,
         pycompat.iterbytestr(b'MAR!?IC'),
         [getattr(stat, s.decode('utf8')) for s in states],
     )
 
     copy = {}
     if (
         opts.get(b'all')
         or opts.get(b'copies')
         or ui.configbool(b'ui', b'statuscopies')
     ) and not opts.get(b'no_status'):
         copy = copies.pathcopies(ctx1, ctx2, m)
 
     morestatus = None
     if (
         (ui.verbose or ui.configbool(b'commands', b'status.verbose'))
         and not ui.plain()
         and not opts.get(b'print0')
     ):
         morestatus = cmdutil.readmorestatus(repo)
 
     ui.pager(b'status')
     fm = ui.formatter(b'status', opts)
     fmt = b'%s' + end
     showchar = not opts.get(b'no_status')
 
     for state, char, files in changestates:
         if state in show:
             label = b'status.' + state
             for f in files:
                 fm.startitem()
                 fm.context(ctx=ctx2)
                 fm.data(itemtype=b'file', path=f)
                 fm.condwrite(showchar, b'status', b'%s ', char, label=label)
                 fm.plain(fmt % uipathfn(f), label=label)
                 if f in copy:
                     fm.data(source=copy[f])
                     fm.plain(
                         (b'  %s' + end) % uipathfn(copy[f]),
                         label=b'status.copied',
                     )
                 if morestatus:
                     morestatus.formatfile(f, fm)
 
     if morestatus:
         morestatus.formatfooter(fm)
     fm.end()
 
 
 @command(
     b'summary|sum',
     [(b'', b'remote', None, _(b'check for push and pull'))],
     b'[--remote]',
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
     helpbasic=True,
     intents={INTENT_READONLY},
 )
 def summary(ui, repo, **opts):
     """summarize working directory state
 
     This generates a brief summary of the working directory state,
     including parents, branch, commit status, phase and available updates.
 
     With the --remote option, this will check the default paths for
     incoming and outgoing changes. This can be time-consuming.
 
     Returns 0 on success.
     """
 
     opts = pycompat.byteskwargs(opts)
     ui.pager(b'summary')
     ctx = repo[None]
     parents = ctx.parents()
     pnode = parents[0].node()
     marks = []
 
     try:
         ms = mergestatemod.mergestate.read(repo)
     except error.UnsupportedMergeRecords as e:
         s = b' '.join(e.recordtypes)
         ui.warn(
             _(b'warning: merge state has unsupported record types: %s\n') % s
         )
         unresolved = []
     else:
         unresolved = list(ms.unresolved())
 
     for p in parents:
         # label with log.changeset (instead of log.parent) since this
         # shows a working directory parent *changeset*:
         # i18n: column positioning for "hg summary"
         ui.write(
             _(b'parent: %d:%s ') % (p.rev(), p),
             label=logcmdutil.changesetlabels(p),
         )
         ui.write(b' '.join(p.tags()), label=b'log.tag')
         if p.bookmarks():
             marks.extend(p.bookmarks())
         if p.rev() == -1:
             if not len(repo):
                 ui.write(_(b' (empty repository)'))
             else:
                 ui.write(_(b' (no revision checked out)'))
         if p.obsolete():
             ui.write(_(b' (obsolete)'))
         if p.isunstable():
             instabilities = (
                 ui.label(instability, b'trouble.%s' % instability)
                 for instability in p.instabilities()
             )
             ui.write(b' (' + b', '.join(instabilities) + b')')
         ui.write(b'\n')
         if p.description():
             ui.status(
                 b' ' + p.description().splitlines()[0].strip() + b'\n',
                 label=b'log.summary',
             )
 
     branch = ctx.branch()
     bheads = repo.branchheads(branch)
     # i18n: column positioning for "hg summary"
     m = _(b'branch: %s\n') % branch
     if branch != b'default':
         ui.write(m, label=b'log.branch')
     else:
         ui.status(m, label=b'log.branch')
 
     if marks:
         active = repo._activebookmark
         # i18n: column positioning for "hg summary"
         ui.write(_(b'bookmarks:'), label=b'log.bookmark')
         if active is not None:
             if active in marks:
                 ui.write(b' *' + active, label=bookmarks.activebookmarklabel)
                 marks.remove(active)
             else:
                 ui.write(b' [%s]' % active, label=bookmarks.activebookmarklabel)
         for m in marks:
             ui.write(b' ' + m, label=b'log.bookmark')
         ui.write(b'\n', label=b'log.bookmark')
 
     status = repo.status(unknown=True)
 
     c = repo.dirstate.copies()
     copied, renamed = [], []
     for d, s in pycompat.iteritems(c):
         if s in status.removed:
             status.removed.remove(s)
             renamed.append(d)
         else:
             copied.append(d)
         if d in status.added:
             status.added.remove(d)
 
     subs = [s for s in ctx.substate if ctx.sub(s).dirty()]
 
     labels = [
         (ui.label(_(b'%d modified'), b'status.modified'), status.modified),
         (ui.label(_(b'%d added'), b'status.added'), status.added),
         (ui.label(_(b'%d removed'), b'status.removed'), status.removed),
         (ui.label(_(b'%d renamed'), b'status.copied'), renamed),
         (ui.label(_(b'%d copied'), b'status.copied'), copied),
         (ui.label(_(b'%d deleted'), b'status.deleted'), status.deleted),
         (ui.label(_(b'%d unknown'), b'status.unknown'), status.unknown),
         (ui.label(_(b'%d unresolved'), b'resolve.unresolved'), unresolved),
         (ui.label(_(b'%d subrepos'), b'status.modified'), subs),
     ]
     t = []
     for l, s in labels:
         if s:
             t.append(l % len(s))
 
     t = b', '.join(t)
     cleanworkdir = False
 
     if repo.vfs.exists(b'graftstate'):
         t += _(b' (graft in progress)')
     if repo.vfs.exists(b'updatestate'):
         t += _(b' (interrupted update)')
     elif len(parents) > 1:
         t += _(b' (merge)')
     elif branch != parents[0].branch():
         t += _(b' (new branch)')
     elif parents[0].closesbranch() and pnode in repo.branchheads(
         branch, closed=True
     ):
         t += _(b' (head closed)')
     elif not (
         status.modified
         or status.added
         or status.removed
         or renamed
         or copied
         or subs
     ):
         t += _(b' (clean)')
         cleanworkdir = True
     elif pnode not in bheads:
         t += _(b' (new branch head)')
 
     if parents:
         pendingphase = max(p.phase() for p in parents)
     else:
         pendingphase = phases.public
 
     if pendingphase > phases.newcommitphase(ui):
         t += b' (%s)' % phases.phasenames[pendingphase]
 
     if cleanworkdir:
         # i18n: column positioning for "hg summary"
         ui.status(_(b'commit: %s\n') % t.strip())
     else:
         # i18n: column positioning for "hg summary"
         ui.write(_(b'commit: %s\n') % t.strip())
 
     # all ancestors of branch heads - all ancestors of parent = new csets
     new = len(
         repo.changelog.findmissing([pctx.node() for pctx in parents], bheads)
     )
 
     if new == 0:
         # i18n: column positioning for "hg summary"
         ui.status(_(b'update: (current)\n'))
     elif pnode not in bheads:
         # i18n: column positioning for "hg summary"
         ui.write(_(b'update: %d new changesets (update)\n') % new)
     else:
         # i18n: column positioning for "hg summary"
         ui.write(
             _(b'update: %d new changesets, %d branch heads (merge)\n')
             % (new, len(bheads))
         )
 
     t = []
     draft = len(repo.revs(b'draft()'))
     if draft:
         t.append(_(b'%d draft') % draft)
     secret = len(repo.revs(b'secret()'))
     if secret:
         t.append(_(b'%d secret') % secret)
 
     if draft or secret:
         ui.status(_(b'phases: %s\n') % b', '.join(t))
 
     if obsolete.isenabled(repo, obsolete.createmarkersopt):
         for trouble in (b"orphan", b"contentdivergent", b"phasedivergent"):
             numtrouble = len(repo.revs(trouble + b"()"))
             # We write all the possibilities to ease translation
             troublemsg = {
                 b"orphan": _(b"orphan: %d changesets"),
                 b"contentdivergent": _(b"content-divergent: %d changesets"),
                 b"phasedivergent": _(b"phase-divergent: %d changesets"),
             }
             if numtrouble > 0:
                 ui.status(troublemsg[trouble] % numtrouble + b"\n")
 
     cmdutil.summaryhooks(ui, repo)
 
     if opts.get(b'remote'):
         needsincoming, needsoutgoing = True, True
     else:
         needsincoming, needsoutgoing = False, False
         for i, o in cmdutil.summaryremotehooks(ui, repo, opts, None):
             if i:
                 needsincoming = True
             if o:
                 needsoutgoing = True
         if not needsincoming and not needsoutgoing:
             return
 
     def getincoming():
         # XXX We should actually skip this if no default is specified, instead
         # of passing "default" which will resolve as "./default/" if no default
         # path is defined.
         source, branches = urlutil.get_unique_pull_path(
             b'summary', repo, ui, b'default'
         )
         sbranch = branches[0]
         try:
             other = hg.peer(repo, {}, source)
         except error.RepoError:
             if opts.get(b'remote'):
                 raise
             return source, sbranch, None, None, None
         revs, checkout = hg.addbranchrevs(repo, other, branches, None)
         if revs:
             revs = [other.lookup(rev) for rev in revs]
         ui.debug(b'comparing with %s\n' % urlutil.hidepassword(source))
         with repo.ui.silent():
             commoninc = discovery.findcommonincoming(repo, other, heads=revs)
         return source, sbranch, other, commoninc, commoninc[1]
 
     if needsincoming:
         source, sbranch, sother, commoninc, incoming = getincoming()
     else:
         source = sbranch = sother = commoninc = incoming = None
 
     def getoutgoing():
         # XXX We should actually skip this if no default is specified, instead
         # of passing "default" which will resolve as "./default/" if no default
         # path is defined.
         d = None
         if b'default-push' in ui.paths:
             d = b'default-push'
         elif b'default' in ui.paths:
             d = b'default'
         if d is not None:
             path = urlutil.get_unique_push_path(b'summary', repo, ui, d)
             dest = path.pushloc or path.loc
             dbranch = path.branch
         else:
             dest = b'default'
             dbranch = None
         revs, checkout = hg.addbranchrevs(repo, repo, (dbranch, []), None)
         if source != dest:
             try:
                 dother = hg.peer(repo, {}, dest)
             except error.RepoError:
                 if opts.get(b'remote'):
                     raise
                 return dest, dbranch, None, None
             ui.debug(b'comparing with %s\n' % urlutil.hidepassword(dest))
         elif sother is None:
             # there is no explicit destination peer, but source one is invalid
             return dest, dbranch, None, None
         else:
             dother = sother
         if source != dest or (sbranch is not None and sbranch != dbranch):
             common = None
         else:
             common = commoninc
         if revs:
             revs = [repo.lookup(rev) for rev in revs]
         with repo.ui.silent():
             outgoing = discovery.findcommonoutgoing(
                 repo, dother, onlyheads=revs, commoninc=common
             )
         return dest, dbranch, dother, outgoing
 
     if needsoutgoing:
         dest, dbranch, dother, outgoing = getoutgoing()
     else:
         dest = dbranch = dother = outgoing = None
 
     if opts.get(b'remote'):
         # Help pytype.  --remote sets both `needsincoming` and `needsoutgoing`.
         # The former always sets `sother` (or raises an exception if it can't);
         # the latter always sets `outgoing`.
         assert sother is not None
         assert outgoing is not None
 
         t = []
         if incoming:
             t.append(_(b'1 or more incoming'))
         o = outgoing.missing
         if o:
             t.append(_(b'%d outgoing') % len(o))
         other = dother or sother
         if b'bookmarks' in other.listkeys(b'namespaces'):
             counts = bookmarks.summary(repo, other)
             if counts[0] > 0:
                 t.append(_(b'%d incoming bookmarks') % counts[0])
             if counts[1] > 0:
                 t.append(_(b'%d outgoing bookmarks') % counts[1])
 
         if t:
             # i18n: column positioning for "hg summary"
             ui.write(_(b'remote: %s\n') % (b', '.join(t)))
         else:
             # i18n: column positioning for "hg summary"
             ui.status(_(b'remote: (synced)\n'))
 
     cmdutil.summaryremotehooks(
         ui,
         repo,
         opts,
         (
             (source, sbranch, sother, commoninc),
             (dest, dbranch, dother, outgoing),
         ),
     )
 
 
 @command(
     b'tag',
     [
         (b'f', b'force', None, _(b'force tag')),
         (b'l', b'local', None, _(b'make the tag local')),
         (b'r', b'rev', b'', _(b'revision to tag'), _(b'REV')),
         (b'', b'remove', None, _(b'remove a tag')),
         # -l/--local is already there, commitopts cannot be used
         (b'e', b'edit', None, _(b'invoke editor on commit messages')),
         (b'm', b'message', b'', _(b'use text as commit message'), _(b'TEXT')),
     ]
     + commitopts2,
     _(b'[-f] [-l] [-m TEXT] [-d DATE] [-u USER] [-r REV] NAME...'),
     helpcategory=command.CATEGORY_CHANGE_ORGANIZATION,
 )
 def tag(ui, repo, name1, *names, **opts):
     """add one or more tags for the current or given revision
 
     Name a particular revision using <name>.
 
     Tags are used to name particular revisions of the repository and are
     very useful to compare different revisions, to go back to significant
     earlier versions or to mark branch points as releases, etc. Changing
     an existing tag is normally disallowed; use -f/--force to override.
 
     If no revision is given, the parent of the working directory is
     used.
 
     To facilitate version control, distribution, and merging of tags,
     they are stored as a file named ".hgtags" which is managed similarly
     to other project files and can be hand-edited if necessary. This
     also means that tagging creates a new commit. The file
     ".hg/localtags" is used for local tags (not shared among
     repositories).
 
     Tag commits are usually made at the head of a branch. If the parent
     of the working directory is not a branch head, :hg:`tag` aborts; use
     -f/--force to force the tag commit to be based on a non-head
     changeset.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     Since tag names have priority over branch names during revision
     lookup, using an existing branch name as a tag name is discouraged.
 
     Returns 0 on success.
     """
     cmdutil.check_incompatible_arguments(opts, 'remove', ['rev'])
     opts = pycompat.byteskwargs(opts)
     with repo.wlock(), repo.lock():
         rev_ = b"."
         names = [t.strip() for t in (name1,) + names]
         if len(names) != len(set(names)):
             raise error.InputError(_(b'tag names must be unique'))
         for n in names:
             scmutil.checknewlabel(repo, n, b'tag')
             if not n:
                 raise error.InputError(
                     _(b'tag names cannot consist entirely of whitespace')
                 )
         if opts.get(b'rev'):
             rev_ = opts[b'rev']
         message = opts.get(b'message')
         if opts.get(b'remove'):
             if opts.get(b'local'):
                 expectedtype = b'local'
             else:
                 expectedtype = b'global'
 
             for n in names:
                 if repo.tagtype(n) == b'global':
                     alltags = tagsmod.findglobaltags(ui, repo)
                     if alltags[n][0] == repo.nullid:
                         raise error.InputError(
                             _(b"tag '%s' is already removed") % n
                         )
                 if not repo.tagtype(n):
                     raise error.InputError(_(b"tag '%s' does not exist") % n)
                 if repo.tagtype(n) != expectedtype:
                     if expectedtype == b'global':
                         raise error.InputError(
                             _(b"tag '%s' is not a global tag") % n
                         )
                     else:
                         raise error.InputError(
                             _(b"tag '%s' is not a local tag") % n
                         )
             rev_ = b'null'
             if not message:
                 # we don't translate commit messages
                 message = b'Removed tag %s' % b', '.join(names)
         elif not opts.get(b'force'):
             for n in names:
                 if n in repo.tags():
                     raise error.InputError(
                         _(b"tag '%s' already exists (use -f to force)") % n
                     )
         if not opts.get(b'local'):
             p1, p2 = repo.dirstate.parents()
             if p2 != repo.nullid:
                 raise error.StateError(_(b'uncommitted merge'))
             bheads = repo.branchheads()
             if not opts.get(b'force') and bheads and p1 not in bheads:
                 raise error.InputError(
                     _(
                         b'working directory is not at a branch head '
                         b'(use -f to force)'
                     )
                 )
         node = scmutil.revsingle(repo, rev_).node()
 
         if not message:
             # we don't translate commit messages
             message = b'Added tag %s for changeset %s' % (
                 b', '.join(names),
                 short(node),
             )
 
         date = opts.get(b'date')
         if date:
             date = dateutil.parsedate(date)
 
         if opts.get(b'remove'):
             editform = b'tag.remove'
         else:
             editform = b'tag.add'
         editor = cmdutil.getcommiteditor(
             editform=editform, **pycompat.strkwargs(opts)
         )
 
         # don't allow tagging the null rev
         if (
             not opts.get(b'remove')
             and scmutil.revsingle(repo, rev_).rev() == nullrev
         ):
             raise error.InputError(_(b"cannot tag null revision"))
 
         tagsmod.tag(
             repo,
             names,
             node,
             message,
             opts.get(b'local'),
             opts.get(b'user'),
             date,
             editor=editor,
         )
 
 
 @command(
     b'tags',
     formatteropts,
     b'',
     helpcategory=command.CATEGORY_CHANGE_ORGANIZATION,
     intents={INTENT_READONLY},
 )
 def tags(ui, repo, **opts):
     """list repository tags
 
     This lists both regular and local tags. When the -v/--verbose
     switch is used, a third column "local" is printed for local tags.
     When the -q/--quiet switch is used, only the tag name is printed.
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported in addition to the common template
       keywords and functions such as ``{tag}``. See also
       :hg:`help templates`.
 
       :type:    String. ``local`` for local tags.
 
     Returns 0 on success.
     """
 
     opts = pycompat.byteskwargs(opts)
     ui.pager(b'tags')
     fm = ui.formatter(b'tags', opts)
     hexfunc = fm.hexfunc
 
     for t, n in reversed(repo.tagslist()):
         hn = hexfunc(n)
         label = b'tags.normal'
         tagtype = repo.tagtype(t)
         if not tagtype or tagtype == b'global':
             tagtype = b''
         else:
             label = b'tags.' + tagtype
 
         fm.startitem()
         fm.context(repo=repo)
         fm.write(b'tag', b'%s', t, label=label)
         fmt = b" " * (30 - encoding.colwidth(t)) + b' %5d:%s'
         fm.condwrite(
             not ui.quiet,
             b'rev node',
             fmt,
             repo.changelog.rev(n),
             hn,
             label=label,
         )
         fm.condwrite(
             ui.verbose and tagtype, b'type', b' %s', tagtype, label=label
         )
         fm.plain(b'\n')
     fm.end()
 
 
 @command(
     b'tip',
     [
         (b'p', b'patch', None, _(b'show patch')),
         (b'g', b'git', None, _(b'use git extended diff format')),
     ]
     + templateopts,
     _(b'[-p] [-g]'),
     helpcategory=command.CATEGORY_CHANGE_NAVIGATION,
 )
 def tip(ui, repo, **opts):
     """show the tip revision (DEPRECATED)
 
     The tip revision (usually just called the tip) is the changeset
     most recently added to the repository (and therefore the most
     recently changed head).
 
     If you have just made a commit, that commit will be the tip. If
     you have just pulled changes from another repository, the tip of
     that repository becomes the current tip. The "tip" tag is special
     and cannot be renamed or assigned to a different changeset.
 
     This command is deprecated, please use :hg:`heads` instead.
 
     Returns 0 on success.
     """
     opts = pycompat.byteskwargs(opts)
     displayer = logcmdutil.changesetdisplayer(ui, repo, opts)
     displayer.show(repo[b'tip'])
     displayer.close()
 
 
 @command(
     b'unbundle',
     [
         (
             b'u',
             b'update',
             None,
             _(b'update to new branch head if changesets were unbundled'),
         )
     ],
     _(b'[-u] FILE...'),
     helpcategory=command.CATEGORY_IMPORT_EXPORT,
 )
 def unbundle(ui, repo, fname1, *fnames, **opts):
     """apply one or more bundle files
 
     Apply one or more bundle files generated by :hg:`bundle`.
 
     Returns 0 on success, 1 if an update has unresolved files.
     """
     fnames = (fname1,) + fnames
 
     with repo.lock():
         for fname in fnames:
             f = hg.openpath(ui, fname)
             gen = exchange.readbundle(ui, f, fname)
             if isinstance(gen, streamclone.streamcloneapplier):
                 raise error.InputError(
                     _(
                         b'packed bundles cannot be applied with '
                         b'"hg unbundle"'
                     ),
                     hint=_(b'use "hg debugapplystreamclonebundle"'),
                 )
             url = b'bundle:' + fname
             try:
                 txnname = b'unbundle'
                 if not isinstance(gen, bundle2.unbundle20):
                     txnname = b'unbundle\n%s' % urlutil.hidepassword(url)
                 with repo.transaction(txnname) as tr:
                     op = bundle2.applybundle(
                         repo, gen, tr, source=b'unbundle', url=url
                     )
             except error.BundleUnknownFeatureError as exc:
                 raise error.Abort(
                     _(b'%s: unknown bundle feature, %s') % (fname, exc),
                     hint=_(
                         b"see https://mercurial-scm.org/"
                         b"wiki/BundleFeature for more "
                         b"information"
                     ),
                 )
             modheads = bundle2.combinechangegroupresults(op)
 
     if postincoming(ui, repo, modheads, opts.get('update'), None, None):
         return 1
     else:
         return 0
 
 
 @command(
     b'unshelve',
     [
         (b'a', b'abort', None, _(b'abort an incomplete unshelve operation')),
         (
             b'c',
             b'continue',
             None,
             _(b'continue an incomplete unshelve operation'),
         ),
         (b'i', b'interactive', None, _(b'use interactive mode (EXPERIMENTAL)')),
         (b'k', b'keep', None, _(b'keep shelve after unshelving')),
         (
             b'n',
             b'name',
             b'',
             _(b'restore shelved change with given name'),
             _(b'NAME'),
         ),
         (b't', b'tool', b'', _(b'specify merge tool')),
         (
             b'',
             b'date',
             b'',
             _(b'set date for temporary commits (DEPRECATED)'),
             _(b'DATE'),
         ),
     ],
     _(b'hg unshelve [OPTION]... [[-n] SHELVED]'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
 )
 def unshelve(ui, repo, *shelved, **opts):
     """restore a shelved change to the working directory
 
     This command accepts an optional name of a shelved change to
     restore. If none is given, the most recent shelved change is used.
 
     If a shelved change is applied successfully, the bundle that
     contains the shelved changes is moved to a backup location
     (.hg/shelve-backup).
 
     Since you can restore a shelved change on top of an arbitrary
     commit, it is possible that unshelving will result in a conflict
     between your changes and the commits you are unshelving onto. If
     this occurs, you must resolve the conflict, then use
     ``--continue`` to complete the unshelve operation. (The bundle
     will not be moved until you successfully complete the unshelve.)
 
     (Alternatively, you can use ``--abort`` to abandon an unshelve
     that causes a conflict. This reverts the unshelved changes, and
     leaves the bundle in place.)
 
     If bare shelved change (without interactive, include and exclude
     option) was done on newly created branch it would restore branch
     information to the working directory.
 
     After a successful unshelve, the shelved changes are stored in a
     backup directory. Only the N most recent backups are kept. N
     defaults to 10 but can be overridden using the ``shelve.maxbackups``
     configuration option.
 
     .. container:: verbose
 
        Timestamp in seconds is used to decide order of backups. More
        than ``maxbackups`` backups are kept, if same timestamp
        prevents from deciding exact order of them, for safety.
 
        Selected changes can be unshelved with ``--interactive`` flag.
        The working directory is updated with the selected changes, and
        only the unselected changes remain shelved.
        Note: The whole shelve is applied to working directory first before
        running interactively. So, this will bring up all the conflicts between
        working directory and the shelve, irrespective of which changes will be
        unshelved.
     """
     with repo.wlock():
         return shelvemod.unshelvecmd(ui, repo, *shelved, **opts)
 
 
 statemod.addunfinished(
     b'unshelve',
     fname=b'shelvedstate',
     continueflag=True,
     abortfunc=shelvemod.hgabortunshelve,
     continuefunc=shelvemod.hgcontinueunshelve,
     cmdmsg=_(b'unshelve already in progress'),
 )
 
 
 @command(
     b'update|up|checkout|co',
     [
         (b'C', b'clean', None, _(b'discard uncommitted changes (no backup)')),
         (b'c', b'check', None, _(b'require clean working directory')),
         (b'm', b'merge', None, _(b'merge uncommitted changes')),
         (b'd', b'date', b'', _(b'tipmost revision matching date'), _(b'DATE')),
         (b'r', b'rev', b'', _(b'revision'), _(b'REV')),
     ]
     + mergetoolopts,
     _(b'[-C|-c|-m] [-d DATE] [[-r] REV]'),
     helpcategory=command.CATEGORY_WORKING_DIRECTORY,
     helpbasic=True,
 )
 def update(ui, repo, node=None, **opts):
     """update working directory (or switch revisions)
 
     Update the repository's working directory to the specified
     changeset. If no changeset is specified, update to the tip of the
     current named branch and move the active bookmark (see :hg:`help
     bookmarks`).
 
     Update sets the working directory's parent revision to the specified
     changeset (see :hg:`help parents`).
 
     If the changeset is not a descendant or ancestor of the working
     directory's parent and there are uncommitted changes, the update is
     aborted. With the -c/--check option, the working directory is checked
     for uncommitted changes; if none are found, the working directory is
     updated to the specified changeset.
 
     .. container:: verbose
 
       The -C/--clean, -c/--check, and -m/--merge options control what
       happens if the working directory contains uncommitted changes.
       At most of one of them can be specified.
 
       1. If no option is specified, and if
          the requested changeset is an ancestor or descendant of
          the working directory's parent, the uncommitted changes
          are merged into the requested changeset and the merged
          result is left uncommitted. If the requested changeset is
          not an ancestor or descendant (that is, it is on another
          branch), the update is aborted and the uncommitted changes
          are preserved.
 
       2. With the -m/--merge option, the update is allowed even if the
          requested changeset is not an ancestor or descendant of
          the working directory's parent.
 
       3. With the -c/--check option, the update is aborted and the
          uncommitted changes are preserved.
 
       4. With the -C/--clean option, uncommitted changes are discarded and
          the working directory is updated to the requested changeset.
 
     To cancel an uncommitted merge (and lose your changes), use
     :hg:`merge --abort`.
 
     Use null as the changeset to remove the working directory (like
     :hg:`clone -U`).
 
     If you want to revert just one file to an older revision, use
     :hg:`revert [-r REV] NAME`.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     Returns 0 on success, 1 if there are unresolved files.
     """
     cmdutil.check_at_most_one_arg(opts, 'clean', 'check', 'merge')
     rev = opts.get('rev')
     date = opts.get('date')
     clean = opts.get('clean')
     check = opts.get('check')
     merge = opts.get('merge')
     if rev and node:
         raise error.InputError(_(b"please specify just one revision"))
 
     if ui.configbool(b'commands', b'update.requiredest'):
         if not node and not rev and not date:
             raise error.InputError(
                 _(b'you must specify a destination'),
                 hint=_(b'for example: hg update ".::"'),
             )
 
     if rev is None or rev == b'':
         rev = node
 
     if date and rev is not None:
         raise error.InputError(_(b"you can't specify a revision and a date"))
 
     updatecheck = None
     if check:
         updatecheck = b'abort'
     elif merge:
         updatecheck = b'none'
 
     with repo.wlock():
         cmdutil.clearunfinished(repo)
         if date:
             rev = cmdutil.finddate(ui, repo, date)
 
         # if we defined a bookmark, we have to remember the original name
         brev = rev
         if rev:
             repo = scmutil.unhidehashlikerevs(repo, [rev], b'nowarn')
         ctx = scmutil.revsingle(repo, rev, default=None)
         rev = ctx.rev()
         hidden = ctx.hidden()
         overrides = {(b'ui', b'forcemerge'): opts.get('tool', b'')}
         with ui.configoverride(overrides, b'update'):
             ret = hg.updatetotally(
                 ui, repo, rev, brev, clean=clean, updatecheck=updatecheck
             )
         if hidden:
             ctxstr = ctx.hex()[:12]
             ui.warn(_(b"updated to hidden changeset %s\n") % ctxstr)
 
             if ctx.obsolete():
                 obsfatemsg = obsutil._getfilteredreason(repo, ctxstr, ctx)
                 ui.warn(b"(%s)\n" % obsfatemsg)
         return ret
 
 
 @command(
     b'verify',
     [(b'', b'full', False, b'perform more checks (EXPERIMENTAL)')],
     helpcategory=command.CATEGORY_MAINTENANCE,
 )
 def verify(ui, repo, **opts):
     """verify the integrity of the repository
 
     Verify the integrity of the current repository.
 
     This will perform an extensive check of the repository's
     integrity, validating the hashes and checksums of each entry in
     the changelog, manifest, and tracked files, as well as the
     integrity of their crosslinks and indices.
 
     Please see https://mercurial-scm.org/wiki/RepositoryCorruption
     for more information about recovery from corruption of the
     repository.
 
     Returns 0 on success, 1 if errors are encountered.
     """
     opts = pycompat.byteskwargs(opts)
 
     level = None
     if opts[b'full']:
         level = verifymod.VERIFY_FULL
     return hg.verify(repo, level)
 
 
 @command(
     b'version',
     [] + formatteropts,
     helpcategory=command.CATEGORY_HELP,
     norepo=True,
     intents={INTENT_READONLY},
 )
 def version_(ui, **opts):
     """output version and copyright information
 
     .. container:: verbose
 
       Template:
 
       The following keywords are supported. See also :hg:`help templates`.
 
       :extensions: List of extensions.
       :ver:     String. Version number.
 
       And each entry of ``{extensions}`` provides the following sub-keywords
       in addition to ``{ver}``.
 
       :bundled: Boolean. True if included in the release.
       :name:    String. Extension name.
     """
     opts = pycompat.byteskwargs(opts)
     if ui.verbose:
         ui.pager(b'version')
     fm = ui.formatter(b"version", opts)
     fm.startitem()
     fm.write(
         b"ver", _(b"Mercurial Distributed SCM (version %s)\n"), util.version()
     )
     license = _(
         b"(see https://mercurial-scm.org for more information)\n"
         b"\nCopyright (C) 2005-2021 Olivia Mackall and others\n"
         b"This is free software; see the source for copying conditions. "
         b"There is NO\nwarranty; "
         b"not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
     )
     if not ui.quiet:
         fm.plain(license)
 
     if ui.verbose:
         fm.plain(_(b"\nEnabled extensions:\n\n"))
     # format names and versions into columns
     names = []
     vers = []
     isinternals = []
     for name, module in sorted(extensions.extensions()):
         names.append(name)
         vers.append(extensions.moduleversion(module) or None)
         isinternals.append(extensions.ismoduleinternal(module))
     fn = fm.nested(b"extensions", tmpl=b'{name}\n')
     if names:
         namefmt = b"  %%-%ds  " % max(len(n) for n in names)
         places = [_(b"external"), _(b"internal")]
         for n, v, p in zip(names, vers, isinternals):
             fn.startitem()
             fn.condwrite(ui.verbose, b"name", namefmt, n)
             if ui.verbose:
                 fn.plain(b"%s  " % places[p])
             fn.data(bundled=p)
             fn.condwrite(ui.verbose and v, b"ver", b"%s", v)
             if ui.verbose:
                 fn.plain(b"\n")
     fn.end()
     fm.end()
 
 
 def loadcmdtable(ui, name, cmdtable):
     """Load command functions from specified cmdtable"""
     overrides = [cmd for cmd in cmdtable if cmd in table]
     if overrides:
         ui.warn(
             _(b"extension '%s' overrides commands: %s\n")
             % (name, b" ".join(overrides))
         )
     table.update(cmdtable)

mercurial/scmutil.py

@@ -1,2289 +1,2289 b''
 # scmutil.py - Mercurial core utility functions
 #
 #  Copyright Olivia 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 glob
 import os
 import posixpath
 import re
 import subprocess
 import weakref
 
 from .i18n import _
 from .node import (
     bin,
     hex,
     nullrev,
     short,
     wdirrev,
 )
 from .pycompat import getattr
 from .thirdparty import attr
 from . import (
     copies as copiesmod,
     encoding,
     error,
     match as matchmod,
     obsolete,
     obsutil,
     pathutil,
     phases,
     policy,
     pycompat,
     requirements as requirementsmod,
     revsetlang,
     similar,
     smartset,
     url,
     util,
     vfs,
 )
 
 from .utils import (
     hashutil,
     procutil,
     stringutil,
 )
 
 if pycompat.iswindows:
     from . import scmwindows as scmplatform
 else:
     from . import scmposix as scmplatform
 
 parsers = policy.importmod('parsers')
 rustrevlog = policy.importrust('revlog')
 
 termsize = scmplatform.termsize
 
 
 @attr.s(slots=True, repr=False)
 class status(object):
     """Struct with a list of files per status.
 
     The 'deleted', 'unknown' and 'ignored' properties are only
     relevant to the working copy.
     """
 
     modified = attr.ib(default=attr.Factory(list))
     added = attr.ib(default=attr.Factory(list))
     removed = attr.ib(default=attr.Factory(list))
     deleted = attr.ib(default=attr.Factory(list))
     unknown = attr.ib(default=attr.Factory(list))
     ignored = attr.ib(default=attr.Factory(list))
     clean = attr.ib(default=attr.Factory(list))
 
     def __iter__(self):
         yield self.modified
         yield self.added
         yield self.removed
         yield self.deleted
         yield self.unknown
         yield self.ignored
         yield self.clean
 
     def __repr__(self):
         return (
             r'<status modified=%s, added=%s, removed=%s, deleted=%s, '
             r'unknown=%s, ignored=%s, clean=%s>'
         ) % tuple(pycompat.sysstr(stringutil.pprint(v)) for v in self)
 
 
 def itersubrepos(ctx1, ctx2):
     """find subrepos in ctx1 or ctx2"""
     # Create a (subpath, ctx) mapping where we prefer subpaths from
     # ctx1. The subpaths from ctx2 are important when the .hgsub file
     # has been modified (in ctx2) but not yet committed (in ctx1).
     subpaths = dict.fromkeys(ctx2.substate, ctx2)
     subpaths.update(dict.fromkeys(ctx1.substate, ctx1))
 
     missing = set()
 
     for subpath in ctx2.substate:
         if subpath not in ctx1.substate:
             del subpaths[subpath]
             missing.add(subpath)
 
     for subpath, ctx in sorted(pycompat.iteritems(subpaths)):
         yield subpath, ctx.sub(subpath)
 
     # Yield an empty subrepo based on ctx1 for anything only in ctx2.  That way,
     # status and diff will have an accurate result when it does
     # 'sub.{status|diff}(rev2)'.  Otherwise, the ctx2 subrepo is compared
     # against itself.
     for subpath in missing:
         yield subpath, ctx2.nullsub(subpath, ctx1)
 
 
 def nochangesfound(ui, repo, excluded=None):
     """Report no changes for push/pull, excluded is None or a list of
     nodes excluded from the push/pull.
     """
     secretlist = []
     if excluded:
         for n in excluded:
             ctx = repo[n]
             if ctx.phase() >= phases.secret and not ctx.extinct():
                 secretlist.append(n)
 
     if secretlist:
         ui.status(
             _(b"no changes found (ignored %d secret changesets)\n")
             % len(secretlist)
         )
     else:
         ui.status(_(b"no changes found\n"))
 
 
 def callcatch(ui, func):
     """call func() with global exception handling
 
     return func() if no exception happens. otherwise do some error handling
     and return an exit code accordingly. does not handle all exceptions.
     """
     coarse_exit_code = -1
     detailed_exit_code = -1
     try:
         try:
             return func()
         except:  # re-raises
             ui.traceback()
             raise
     # Global exception handling, alphabetically
     # Mercurial-specific first, followed by built-in and library exceptions
     except error.LockHeld as inst:
         detailed_exit_code = 20
         if inst.errno == errno.ETIMEDOUT:
             reason = _(b'timed out waiting for lock held by %r') % (
                 pycompat.bytestr(inst.locker)
             )
         else:
             reason = _(b'lock held by %r') % inst.locker
         ui.error(
             _(b"abort: %s: %s\n")
             % (inst.desc or stringutil.forcebytestr(inst.filename), reason)
         )
         if not inst.locker:
             ui.error(_(b"(lock might be very busy)\n"))
     except error.LockUnavailable as inst:
         detailed_exit_code = 20
         ui.error(
             _(b"abort: could not lock %s: %s\n")
             % (
                 inst.desc or stringutil.forcebytestr(inst.filename),
                 encoding.strtolocal(inst.strerror),
             )
         )
     except error.RepoError as inst:
         ui.error(_(b"abort: %s\n") % inst)
         if inst.hint:
             ui.error(_(b"(%s)\n") % inst.hint)
     except error.ResponseError as inst:
         ui.error(_(b"abort: %s") % inst.args[0])
         msg = inst.args[1]
         if isinstance(msg, type(u'')):
             msg = pycompat.sysbytes(msg)
         if msg is None:
             ui.error(b"\n")
         elif not isinstance(msg, bytes):
             ui.error(b" %r\n" % (msg,))
         elif not msg:
             ui.error(_(b" empty string\n"))
         else:
             ui.error(b"\n%r\n" % pycompat.bytestr(stringutil.ellipsis(msg)))
     except error.CensoredNodeError as inst:
         ui.error(_(b"abort: file censored %s\n") % inst)
     except error.WdirUnsupported:
         ui.error(_(b"abort: working directory revision cannot be specified\n"))
     except error.Error as inst:
         if inst.detailed_exit_code is not None:
             detailed_exit_code = inst.detailed_exit_code
         if inst.coarse_exit_code is not None:
             coarse_exit_code = inst.coarse_exit_code
         ui.error(inst.format())
     except error.WorkerError as inst:
         # Don't print a message -- the worker already should have
         return inst.status_code
     except ImportError as inst:
         ui.error(_(b"abort: %s\n") % stringutil.forcebytestr(inst))
         m = stringutil.forcebytestr(inst).split()[-1]
         if m in b"mpatch bdiff".split():
             ui.error(_(b"(did you forget to compile extensions?)\n"))
         elif m in b"zlib".split():
             ui.error(_(b"(is your Python install correct?)\n"))
     except util.urlerr.httperror as inst:
         detailed_exit_code = 100
         ui.error(_(b"abort: %s\n") % stringutil.forcebytestr(inst))
     except util.urlerr.urlerror as inst:
         detailed_exit_code = 100
         try:  # usually it is in the form (errno, strerror)
             reason = inst.reason.args[1]
         except (AttributeError, IndexError):
             # it might be anything, for example a string
             reason = inst.reason
         if isinstance(reason, pycompat.unicode):
             # SSLError of Python 2.7.9 contains a unicode
             reason = encoding.unitolocal(reason)
         ui.error(_(b"abort: error: %s\n") % stringutil.forcebytestr(reason))
     except (IOError, OSError) as inst:
         if (
             util.safehasattr(inst, b"args")
             and inst.args
             and inst.args[0] == errno.EPIPE
         ):
             pass
         elif getattr(inst, "strerror", None):  # common IOError or OSError
             if getattr(inst, "filename", None) is not None:
                 ui.error(
                     _(b"abort: %s: '%s'\n")
                     % (
                         encoding.strtolocal(inst.strerror),
                         stringutil.forcebytestr(inst.filename),
                     )
                 )
             else:
                 ui.error(_(b"abort: %s\n") % encoding.strtolocal(inst.strerror))
         else:  # suspicious IOError
             raise
     except MemoryError:
         ui.error(_(b"abort: out of memory\n"))
     except SystemExit as inst:
         # Commands shouldn't sys.exit directly, but give a return code.
         # Just in case catch this and and pass exit code to caller.
         detailed_exit_code = 254
         coarse_exit_code = inst.code
 
     if ui.configbool(b'ui', b'detailed-exit-code'):
         return detailed_exit_code
     else:
         return coarse_exit_code
 
 
 def checknewlabel(repo, lbl, kind):
     # Do not use the "kind" parameter in ui output.
     # It makes strings difficult to translate.
     if lbl in [b'tip', b'.', b'null']:
         raise error.InputError(_(b"the name '%s' is reserved") % lbl)
     for c in (b':', b'\0', b'\n', b'\r'):
         if c in lbl:
             raise error.InputError(
                 _(b"%r cannot be used in a name") % pycompat.bytestr(c)
             )
     try:
         int(lbl)
         raise error.InputError(_(b"cannot use an integer as a name"))
     except ValueError:
         pass
     if lbl.strip() != lbl:
         raise error.InputError(
             _(b"leading or trailing whitespace in name %r") % lbl
         )
 
 
 def checkfilename(f):
     '''Check that the filename f is an acceptable filename for a tracked file'''
     if b'\r' in f or b'\n' in f:
         raise error.InputError(
             _(b"'\\n' and '\\r' disallowed in filenames: %r")
             % pycompat.bytestr(f)
         )
 
 
 def checkportable(ui, f):
     '''Check if filename f is portable and warn or abort depending on config'''
     checkfilename(f)
     abort, warn = checkportabilityalert(ui)
     if abort or warn:
         msg = util.checkwinfilename(f)
         if msg:
             msg = b"%s: %s" % (msg, procutil.shellquote(f))
             if abort:
                 raise error.InputError(msg)
             ui.warn(_(b"warning: %s\n") % msg)
 
 
 def checkportabilityalert(ui):
     """check if the user's config requests nothing, a warning, or abort for
     non-portable filenames"""
     val = ui.config(b'ui', b'portablefilenames')
     lval = val.lower()
     bval = stringutil.parsebool(val)
     abort = pycompat.iswindows or lval == b'abort'
     warn = bval or lval == b'warn'
     if bval is None and not (warn or abort or lval == b'ignore'):
         raise error.ConfigError(
             _(b"ui.portablefilenames value is invalid ('%s')") % val
         )
     return abort, warn
 
 
 class casecollisionauditor(object):
     def __init__(self, ui, abort, dirstate):
         self._ui = ui
         self._abort = abort
         allfiles = b'\0'.join(dirstate)
         self._loweredfiles = set(encoding.lower(allfiles).split(b'\0'))
         self._dirstate = dirstate
         # The purpose of _newfiles is so that we don't complain about
         # case collisions if someone were to call this object with the
         # same filename twice.
         self._newfiles = set()
 
     def __call__(self, f):
         if f in self._newfiles:
             return
         fl = encoding.lower(f)
         if fl in self._loweredfiles and f not in self._dirstate:
             msg = _(b'possible case-folding collision for %s') % f
             if self._abort:
                 raise error.Abort(msg)
             self._ui.warn(_(b"warning: %s\n") % msg)
         self._loweredfiles.add(fl)
         self._newfiles.add(f)
 
 
 def filteredhash(repo, maxrev):
     """build hash of filtered revisions in the current repoview.
 
     Multiple caches perform up-to-date validation by checking that the
     tiprev and tipnode stored in the cache file match the current repository.
     However, this is not sufficient for validating repoviews because the set
     of revisions in the view may change without the repository tiprev and
     tipnode changing.
 
     This function hashes all the revs filtered from the view and returns
     that SHA-1 digest.
     """
     cl = repo.changelog
     if not cl.filteredrevs:
         return None
     key = cl._filteredrevs_hashcache.get(maxrev)
     if not key:
         revs = sorted(r for r in cl.filteredrevs if r <= maxrev)
         if revs:
             s = hashutil.sha1()
             for rev in revs:
                 s.update(b'%d;' % rev)
             key = s.digest()
             cl._filteredrevs_hashcache[maxrev] = key
     return key
 
 
 def walkrepos(path, followsym=False, seen_dirs=None, recurse=False):
     """yield every hg repository under path, always recursively.
     The recurse flag will only control recursion into repo working dirs"""
 
     def errhandler(err):
         if err.filename == path:
             raise err
 
     samestat = getattr(os.path, 'samestat', None)
     if followsym and samestat is not None:
 
         def adddir(dirlst, dirname):
             dirstat = os.stat(dirname)
             match = any(samestat(dirstat, lstdirstat) for lstdirstat in dirlst)
             if not match:
                 dirlst.append(dirstat)
             return not match
 
     else:
         followsym = False
 
     if (seen_dirs is None) and followsym:
         seen_dirs = []
         adddir(seen_dirs, path)
     for root, dirs, files in os.walk(path, topdown=True, onerror=errhandler):
         dirs.sort()
         if b'.hg' in dirs:
             yield root  # found a repository
             qroot = os.path.join(root, b'.hg', b'patches')
             if os.path.isdir(os.path.join(qroot, b'.hg')):
                 yield qroot  # we have a patch queue repo here
             if recurse:
                 # avoid recursing inside the .hg directory
                 dirs.remove(b'.hg')
             else:
                 dirs[:] = []  # don't descend further
         elif followsym:
             newdirs = []
             for d in dirs:
                 fname = os.path.join(root, d)
                 if adddir(seen_dirs, fname):
                     if os.path.islink(fname):
                         for hgname in walkrepos(fname, True, seen_dirs):
                             yield hgname
                     else:
                         newdirs.append(d)
             dirs[:] = newdirs
 
 
 def binnode(ctx):
     """Return binary node id for a given basectx"""
     node = ctx.node()
     if node is None:
         return ctx.repo().nodeconstants.wdirid
     return node
 
 
 def intrev(ctx):
     """Return integer for a given basectx that can be used in comparison or
     arithmetic operation"""
     rev = ctx.rev()
     if rev is None:
         return wdirrev
     return rev
 
 
 def formatchangeid(ctx):
     """Format changectx as '{rev}:{node|formatnode}', which is the default
     template provided by logcmdutil.changesettemplater"""
     repo = ctx.repo()
     return formatrevnode(repo.ui, intrev(ctx), binnode(ctx))
 
 
 def formatrevnode(ui, rev, node):
     """Format given revision and node depending on the current verbosity"""
     if ui.debugflag:
         hexfunc = hex
     else:
         hexfunc = short
     return b'%d:%s' % (rev, hexfunc(node))
 
 
 def resolvehexnodeidprefix(repo, prefix):
     if prefix.startswith(b'x'):
         prefix = prefix[1:]
     try:
         # Uses unfiltered repo because it's faster when prefix is ambiguous/
         # This matches the shortesthexnodeidprefix() function below.
         node = repo.unfiltered().changelog._partialmatch(prefix)
     except error.AmbiguousPrefixLookupError:
         revset = repo.ui.config(
             b'experimental', b'revisions.disambiguatewithin'
         )
         if revset:
             # Clear config to avoid infinite recursion
             configoverrides = {
                 (b'experimental', b'revisions.disambiguatewithin'): None
             }
             with repo.ui.configoverride(configoverrides):
                 revs = repo.anyrevs([revset], user=True)
                 matches = []
                 for rev in revs:
                     node = repo.changelog.node(rev)
                     if hex(node).startswith(prefix):
                         matches.append(node)
                 if len(matches) == 1:
                     return matches[0]
         raise
     if node is None:
         return
     repo.changelog.rev(node)  # make sure node isn't filtered
     return node
 
 
 def mayberevnum(repo, prefix):
     """Checks if the given prefix may be mistaken for a revision number"""
     try:
         i = int(prefix)
         # if we are a pure int, then starting with zero will not be
         # confused as a rev; or, obviously, if the int is larger
         # than the value of the tip rev. We still need to disambiguate if
         # prefix == '0', since that *is* a valid revnum.
         if (prefix != b'0' and prefix[0:1] == b'0') or i >= len(repo):
             return False
         return True
     except ValueError:
         return False
 
 
 def shortesthexnodeidprefix(repo, node, minlength=1, cache=None):
     """Find the shortest unambiguous prefix that matches hexnode.
 
     If "cache" is not None, it must be a dictionary that can be used for
     caching between calls to this method.
     """
     # _partialmatch() of filtered changelog could take O(len(repo)) time,
     # which would be unacceptably slow. so we look for hash collision in
     # unfiltered space, which means some hashes may be slightly longer.
 
     minlength = max(minlength, 1)
 
     def disambiguate(prefix):
         """Disambiguate against revnums."""
         if repo.ui.configbool(b'experimental', b'revisions.prefixhexnode'):
             if mayberevnum(repo, prefix):
                 return b'x' + prefix
             else:
                 return prefix
 
         hexnode = hex(node)
         for length in range(len(prefix), len(hexnode) + 1):
             prefix = hexnode[:length]
             if not mayberevnum(repo, prefix):
                 return prefix
 
     cl = repo.unfiltered().changelog
     revset = repo.ui.config(b'experimental', b'revisions.disambiguatewithin')
     if revset:
         revs = None
         if cache is not None:
             revs = cache.get(b'disambiguationrevset')
         if revs is None:
             revs = repo.anyrevs([revset], user=True)
             if cache is not None:
                 cache[b'disambiguationrevset'] = revs
         if cl.rev(node) in revs:
             hexnode = hex(node)
             nodetree = None
             if cache is not None:
                 nodetree = cache.get(b'disambiguationnodetree')
             if not nodetree:
                 if util.safehasattr(parsers, 'nodetree'):
                     # The CExt is the only implementation to provide a nodetree
                     # class so far.
                     index = cl.index
                     if util.safehasattr(index, 'get_cindex'):
                         # the rust wrapped need to give access to its internal index
                         index = index.get_cindex()
                     nodetree = parsers.nodetree(index, len(revs))
                     for r in revs:
                         nodetree.insert(r)
                     if cache is not None:
                         cache[b'disambiguationnodetree'] = nodetree
             if nodetree is not None:
                 length = max(nodetree.shortest(node), minlength)
                 prefix = hexnode[:length]
                 return disambiguate(prefix)
             for length in range(minlength, len(hexnode) + 1):
                 matches = []
                 prefix = hexnode[:length]
                 for rev in revs:
                     otherhexnode = repo[rev].hex()
                     if prefix == otherhexnode[:length]:
                         matches.append(otherhexnode)
                 if len(matches) == 1:
                     return disambiguate(prefix)
 
     try:
         return disambiguate(cl.shortest(node, minlength))
     except error.LookupError:
         raise error.RepoLookupError()
 
 
 def isrevsymbol(repo, symbol):
     """Checks if a symbol exists in the repo.
 
     See revsymbol() for details. Raises error.AmbiguousPrefixLookupError if the
     symbol is an ambiguous nodeid prefix.
     """
     try:
         revsymbol(repo, symbol)
         return True
     except error.RepoLookupError:
         return False
 
 
 def revsymbol(repo, symbol):
     """Returns a context given a single revision symbol (as string).
 
     This is similar to revsingle(), but accepts only a single revision symbol,
     i.e. things like ".", "tip", "1234", "deadbeef", "my-bookmark" work, but
     not "max(public())".
     """
     if not isinstance(symbol, bytes):
         msg = (
             b"symbol (%s of type %s) was not a string, did you mean "
             b"repo[symbol]?" % (symbol, type(symbol))
         )
         raise error.ProgrammingError(msg)
     try:
         if symbol in (b'.', b'tip', b'null'):
             return repo[symbol]
 
         try:
             r = int(symbol)
             if b'%d' % r != symbol:
                 raise ValueError
             l = len(repo.changelog)
             if r < 0:
                 r += l
             if r < 0 or r >= l and r != wdirrev:
                 raise ValueError
             return repo[r]
         except error.FilteredIndexError:
             raise
         except (ValueError, OverflowError, IndexError):
             pass
 
         if len(symbol) == 2 * repo.nodeconstants.nodelen:
             try:
                 node = bin(symbol)
                 rev = repo.changelog.rev(node)
                 return repo[rev]
             except error.FilteredLookupError:
                 raise
             except (TypeError, LookupError):
                 pass
 
         # look up bookmarks through the name interface
         try:
             node = repo.names.singlenode(repo, symbol)
             rev = repo.changelog.rev(node)
             return repo[rev]
         except KeyError:
             pass
 
         node = resolvehexnodeidprefix(repo, symbol)
         if node is not None:
             rev = repo.changelog.rev(node)
             return repo[rev]
 
         raise error.RepoLookupError(_(b"unknown revision '%s'") % symbol)
 
     except error.WdirUnsupported:
         return repo[None]
     except (
         error.FilteredIndexError,
         error.FilteredLookupError,
         error.FilteredRepoLookupError,
     ):
         raise _filterederror(repo, symbol)
 
 
 def _filterederror(repo, changeid):
     """build an exception to be raised about a filtered changeid
 
     This is extracted in a function to help extensions (eg: evolve) to
     experiment with various message variants."""
     if repo.filtername.startswith(b'visible'):
 
         # Check if the changeset is obsolete
         unfilteredrepo = repo.unfiltered()
         ctx = revsymbol(unfilteredrepo, changeid)
 
         # If the changeset is obsolete, enrich the message with the reason
         # that made this changeset not visible
         if ctx.obsolete():
             msg = obsutil._getfilteredreason(repo, changeid, ctx)
         else:
             msg = _(b"hidden revision '%s'") % changeid
 
         hint = _(b'use --hidden to access hidden revisions')
 
         return error.FilteredRepoLookupError(msg, hint=hint)
     msg = _(b"filtered revision '%s' (not in '%s' subset)")
     msg %= (changeid, repo.filtername)
     return error.FilteredRepoLookupError(msg)
 
 
 def revsingle(repo, revspec, default=b'.', localalias=None):
     if not revspec and revspec != 0:
         return repo[default]
 
     l = revrange(repo, [revspec], localalias=localalias)
     if not l:
-        raise error.Abort(_(b'empty revision set'))
+        raise error.InputError(_(b'empty revision set'))
     return repo[l.last()]
 
 
 def _pairspec(revspec):
     tree = revsetlang.parse(revspec)
     return tree and tree[0] in (
         b'range',
         b'rangepre',
         b'rangepost',
         b'rangeall',
     )
 
 
 def revpair(repo, revs):
     if not revs:
         return repo[b'.'], repo[None]
 
     l = revrange(repo, revs)
 
     if not l:
-        raise error.Abort(_(b'empty revision range'))
+        raise error.InputError(_(b'empty revision range'))
 
     first = l.first()
     second = l.last()
 
     if (
         first == second
         and len(revs) >= 2
         and not all(revrange(repo, [r]) for r in revs)
     ):
-        raise error.Abort(_(b'empty revision on one side of range'))
+        raise error.InputError(_(b'empty revision on one side of range'))
 
     # if top-level is range expression, the result must always be a pair
     if first == second and len(revs) == 1 and not _pairspec(revs[0]):
         return repo[first], repo[None]
 
     return repo[first], repo[second]
 
 
 def revrange(repo, specs, localalias=None):
     """Execute 1 to many revsets and return the union.
 
     This is the preferred mechanism for executing revsets using user-specified
     config options, such as revset aliases.
 
     The revsets specified by ``specs`` will be executed via a chained ``OR``
     expression. If ``specs`` is empty, an empty result is returned.
 
     ``specs`` can contain integers, in which case they are assumed to be
     revision numbers.
 
     It is assumed the revsets are already formatted. If you have arguments
     that need to be expanded in the revset, call ``revsetlang.formatspec()``
     and pass the result as an element of ``specs``.
 
     Specifying a single revset is allowed.
 
     Returns a ``smartset.abstractsmartset`` which is a list-like interface over
     integer revisions.
     """
     allspecs = []
     for spec in specs:
         if isinstance(spec, int):
             spec = revsetlang.formatspec(b'%d', spec)
         allspecs.append(spec)
     return repo.anyrevs(allspecs, user=True, localalias=localalias)
 
 
 def increasingwindows(windowsize=8, sizelimit=512):
     while True:
         yield windowsize
         if windowsize < sizelimit:
             windowsize *= 2
 
 
 def walkchangerevs(repo, revs, makefilematcher, prepare):
     """Iterate over files and the revs in a "windowed" way.
 
     Callers most commonly need to iterate backwards over the history
     in which they are interested. Doing so has awful (quadratic-looking)
     performance, so we use iterators in a "windowed" way.
 
     We walk a window of revisions in the desired order.  Within the
     window, we first walk forwards to gather data, then in the desired
     order (usually backwards) to display it.
 
     This function returns an iterator yielding contexts. Before
     yielding each context, the iterator will first call the prepare
     function on each context in the window in forward order."""
 
     if not revs:
         return []
     change = repo.__getitem__
 
     def iterate():
         it = iter(revs)
         stopiteration = False
         for windowsize in increasingwindows():
             nrevs = []
             for i in pycompat.xrange(windowsize):
                 rev = next(it, None)
                 if rev is None:
                     stopiteration = True
                     break
                 nrevs.append(rev)
             for rev in sorted(nrevs):
                 ctx = change(rev)
                 prepare(ctx, makefilematcher(ctx))
             for rev in nrevs:
                 yield change(rev)
 
             if stopiteration:
                 break
 
     return iterate()
 
 
 def meaningfulparents(repo, ctx):
     """Return list of meaningful (or all if debug) parentrevs for rev.
 
     For merges (two non-nullrev revisions) both parents are meaningful.
     Otherwise the first parent revision is considered meaningful if it
     is not the preceding revision.
     """
     parents = ctx.parents()
     if len(parents) > 1:
         return parents
     if repo.ui.debugflag:
         return [parents[0], repo[nullrev]]
     if parents[0].rev() >= intrev(ctx) - 1:
         return []
     return parents
 
 
 def getuipathfn(repo, legacyrelativevalue=False, forcerelativevalue=None):
     """Return a function that produced paths for presenting to the user.
 
     The returned function takes a repo-relative path and produces a path
     that can be presented in the UI.
 
     Depending on the value of ui.relative-paths, either a repo-relative or
     cwd-relative path will be produced.
 
     legacyrelativevalue is the value to use if ui.relative-paths=legacy
 
     If forcerelativevalue is not None, then that value will be used regardless
     of what ui.relative-paths is set to.
     """
     if forcerelativevalue is not None:
         relative = forcerelativevalue
     else:
         config = repo.ui.config(b'ui', b'relative-paths')
         if config == b'legacy':
             relative = legacyrelativevalue
         else:
             relative = stringutil.parsebool(config)
             if relative is None:
                 raise error.ConfigError(
                     _(b"ui.relative-paths is not a boolean ('%s')") % config
                 )
 
     if relative:
         cwd = repo.getcwd()
         if cwd != b'':
             # this branch would work even if cwd == b'' (ie cwd = repo
             # root), but its generality makes the returned function slower
             pathto = repo.pathto
             return lambda f: pathto(f, cwd)
     if repo.ui.configbool(b'ui', b'slash'):
         return lambda f: f
     else:
         return util.localpath
 
 
 def subdiruipathfn(subpath, uipathfn):
     '''Create a new uipathfn that treats the file as relative to subpath.'''
     return lambda f: uipathfn(posixpath.join(subpath, f))
 
 
 def anypats(pats, opts):
     """Checks if any patterns, including --include and --exclude were given.
 
     Some commands (e.g. addremove) use this condition for deciding whether to
     print absolute or relative paths.
     """
     return bool(pats or opts.get(b'include') or opts.get(b'exclude'))
 
 
 def expandpats(pats):
     """Expand bare globs when running on windows.
     On posix we assume it already has already been done by sh."""
     if not util.expandglobs:
         return list(pats)
     ret = []
     for kindpat in pats:
         kind, pat = matchmod._patsplit(kindpat, None)
         if kind is None:
             try:
                 globbed = glob.glob(pat)
             except re.error:
                 globbed = [pat]
             if globbed:
                 ret.extend(globbed)
                 continue
         ret.append(kindpat)
     return ret
 
 
 def matchandpats(
     ctx, pats=(), opts=None, globbed=False, default=b'relpath', badfn=None
 ):
     """Return a matcher and the patterns that were used.
     The matcher will warn about bad matches, unless an alternate badfn callback
     is provided."""
     if opts is None:
         opts = {}
     if not globbed and default == b'relpath':
         pats = expandpats(pats or [])
 
     uipathfn = getuipathfn(ctx.repo(), legacyrelativevalue=True)
 
     def bad(f, msg):
         ctx.repo().ui.warn(b"%s: %s\n" % (uipathfn(f), msg))
 
     if badfn is None:
         badfn = bad
 
     m = ctx.match(
         pats,
         opts.get(b'include'),
         opts.get(b'exclude'),
         default,
         listsubrepos=opts.get(b'subrepos'),
         badfn=badfn,
     )
 
     if m.always():
         pats = []
     return m, pats
 
 
 def match(
     ctx, pats=(), opts=None, globbed=False, default=b'relpath', badfn=None
 ):
     '''Return a matcher that will warn about bad matches.'''
     return matchandpats(ctx, pats, opts, globbed, default, badfn=badfn)[0]
 
 
 def matchall(repo):
     '''Return a matcher that will efficiently match everything.'''
     return matchmod.always()
 
 
 def matchfiles(repo, files, badfn=None):
     '''Return a matcher that will efficiently match exactly these files.'''
     return matchmod.exact(files, badfn=badfn)
 
 
 def parsefollowlinespattern(repo, rev, pat, msg):
     """Return a file name from `pat` pattern suitable for usage in followlines
     logic.
     """
     if not matchmod.patkind(pat):
         return pathutil.canonpath(repo.root, repo.getcwd(), pat)
     else:
         ctx = repo[rev]
         m = matchmod.match(repo.root, repo.getcwd(), [pat], ctx=ctx)
         files = [f for f in ctx if m(f)]
         if len(files) != 1:
             raise error.ParseError(msg)
         return files[0]
 
 
 def getorigvfs(ui, repo):
     """return a vfs suitable to save 'orig' file
 
     return None if no special directory is configured"""
     origbackuppath = ui.config(b'ui', b'origbackuppath')
     if not origbackuppath:
         return None
     return vfs.vfs(repo.wvfs.join(origbackuppath))
 
 
 def backuppath(ui, repo, filepath):
     """customize where working copy backup files (.orig files) are created
 
     Fetch user defined path from config file: [ui] origbackuppath = <path>
     Fall back to default (filepath with .orig suffix) if not specified
 
     filepath is repo-relative
 
     Returns an absolute path
     """
     origvfs = getorigvfs(ui, repo)
     if origvfs is None:
         return repo.wjoin(filepath + b".orig")
 
     origbackupdir = origvfs.dirname(filepath)
     if not origvfs.isdir(origbackupdir) or origvfs.islink(origbackupdir):
         ui.note(_(b'creating directory: %s\n') % origvfs.join(origbackupdir))
 
         # Remove any files that conflict with the backup file's path
         for f in reversed(list(pathutil.finddirs(filepath))):
             if origvfs.isfileorlink(f):
                 ui.note(_(b'removing conflicting file: %s\n') % origvfs.join(f))
                 origvfs.unlink(f)
                 break
 
         origvfs.makedirs(origbackupdir)
 
     if origvfs.isdir(filepath) and not origvfs.islink(filepath):
         ui.note(
             _(b'removing conflicting directory: %s\n') % origvfs.join(filepath)
         )
         origvfs.rmtree(filepath, forcibly=True)
 
     return origvfs.join(filepath)
 
 
 class _containsnode(object):
     """proxy __contains__(node) to container.__contains__ which accepts revs"""
 
     def __init__(self, repo, revcontainer):
         self._torev = repo.changelog.rev
         self._revcontains = revcontainer.__contains__
 
     def __contains__(self, node):
         return self._revcontains(self._torev(node))
 
 
 def cleanupnodes(
     repo,
     replacements,
     operation,
     moves=None,
     metadata=None,
     fixphase=False,
     targetphase=None,
     backup=True,
 ):
     """do common cleanups when old nodes are replaced by new nodes
 
     That includes writing obsmarkers or stripping nodes, and moving bookmarks.
     (we might also want to move working directory parent in the future)
 
     By default, bookmark moves are calculated automatically from 'replacements',
     but 'moves' can be used to override that. Also, 'moves' may include
     additional bookmark moves that should not have associated obsmarkers.
 
     replacements is {oldnode: [newnode]} or a iterable of nodes if they do not
     have replacements. operation is a string, like "rebase".
 
     metadata is dictionary containing metadata to be stored in obsmarker if
     obsolescence is enabled.
     """
     assert fixphase or targetphase is None
     if not replacements and not moves:
         return
 
     # translate mapping's other forms
     if not util.safehasattr(replacements, b'items'):
         replacements = {(n,): () for n in replacements}
     else:
         # upgrading non tuple "source" to tuple ones for BC
         repls = {}
         for key, value in replacements.items():
             if not isinstance(key, tuple):
                 key = (key,)
             repls[key] = value
         replacements = repls
 
     # Unfiltered repo is needed since nodes in replacements might be hidden.
     unfi = repo.unfiltered()
 
     # Calculate bookmark movements
     if moves is None:
         moves = {}
         for oldnodes, newnodes in replacements.items():
             for oldnode in oldnodes:
                 if oldnode in moves:
                     continue
                 if len(newnodes) > 1:
                     # usually a split, take the one with biggest rev number
                     newnode = next(unfi.set(b'max(%ln)', newnodes)).node()
                 elif len(newnodes) == 0:
                     # move bookmark backwards
                     allreplaced = []
                     for rep in replacements:
                         allreplaced.extend(rep)
                     roots = list(
                         unfi.set(b'max((::%n) - %ln)', oldnode, allreplaced)
                     )
                     if roots:
                         newnode = roots[0].node()
                     else:
                         newnode = repo.nullid
                 else:
                     newnode = newnodes[0]
                 moves[oldnode] = newnode
 
     allnewnodes = [n for ns in replacements.values() for n in ns]
     toretract = {}
     toadvance = {}
     if fixphase:
         precursors = {}
         for oldnodes, newnodes in replacements.items():
             for oldnode in oldnodes:
                 for newnode in newnodes:
                     precursors.setdefault(newnode, []).append(oldnode)
 
         allnewnodes.sort(key=lambda n: unfi[n].rev())
         newphases = {}
 
         def phase(ctx):
             return newphases.get(ctx.node(), ctx.phase())
 
         for newnode in allnewnodes:
             ctx = unfi[newnode]
             parentphase = max(phase(p) for p in ctx.parents())
             if targetphase is None:
                 oldphase = max(
                     unfi[oldnode].phase() for oldnode in precursors[newnode]
                 )
                 newphase = max(oldphase, parentphase)
             else:
                 newphase = max(targetphase, parentphase)
             newphases[newnode] = newphase
             if newphase > ctx.phase():
                 toretract.setdefault(newphase, []).append(newnode)
             elif newphase < ctx.phase():
                 toadvance.setdefault(newphase, []).append(newnode)
 
     with repo.transaction(b'cleanup') as tr:
         # Move bookmarks
         bmarks = repo._bookmarks
         bmarkchanges = []
         for oldnode, newnode in moves.items():
             oldbmarks = repo.nodebookmarks(oldnode)
             if not oldbmarks:
                 continue
             from . import bookmarks  # avoid import cycle
 
             repo.ui.debug(
                 b'moving bookmarks %r from %s to %s\n'
                 % (
                     pycompat.rapply(pycompat.maybebytestr, oldbmarks),
                     hex(oldnode),
                     hex(newnode),
                 )
             )
             # Delete divergent bookmarks being parents of related newnodes
             deleterevs = repo.revs(
                 b'parents(roots(%ln & (::%n))) - parents(%n)',
                 allnewnodes,
                 newnode,
                 oldnode,
             )
             deletenodes = _containsnode(repo, deleterevs)
             for name in oldbmarks:
                 bmarkchanges.append((name, newnode))
                 for b in bookmarks.divergent2delete(repo, deletenodes, name):
                     bmarkchanges.append((b, None))
 
         if bmarkchanges:
             bmarks.applychanges(repo, tr, bmarkchanges)
 
         for phase, nodes in toretract.items():
             phases.retractboundary(repo, tr, phase, nodes)
         for phase, nodes in toadvance.items():
             phases.advanceboundary(repo, tr, phase, nodes)
 
         mayusearchived = repo.ui.config(b'experimental', b'cleanup-as-archived')
         # Obsolete or strip nodes
         if obsolete.isenabled(repo, obsolete.createmarkersopt):
             # If a node is already obsoleted, and we want to obsolete it
             # without a successor, skip that obssolete request since it's
             # unnecessary. That's the "if s or not isobs(n)" check below.
             # Also sort the node in topology order, that might be useful for
             # some obsstore logic.
             # NOTE: the sorting might belong to createmarkers.
             torev = unfi.changelog.rev
             sortfunc = lambda ns: torev(ns[0][0])
             rels = []
             for ns, s in sorted(replacements.items(), key=sortfunc):
                 rel = (tuple(unfi[n] for n in ns), tuple(unfi[m] for m in s))
                 rels.append(rel)
             if rels:
                 obsolete.createmarkers(
                     repo, rels, operation=operation, metadata=metadata
                 )
         elif phases.supportinternal(repo) and mayusearchived:
             # this assume we do not have "unstable" nodes above the cleaned ones
             allreplaced = set()
             for ns in replacements.keys():
                 allreplaced.update(ns)
             if backup:
                 from . import repair  # avoid import cycle
 
                 node = min(allreplaced, key=repo.changelog.rev)
                 repair.backupbundle(
                     repo, allreplaced, allreplaced, node, operation
                 )
             phases.retractboundary(repo, tr, phases.archived, allreplaced)
         else:
             from . import repair  # avoid import cycle
 
             tostrip = list(n for ns in replacements for n in ns)
             if tostrip:
                 repair.delayedstrip(
                     repo.ui, repo, tostrip, operation, backup=backup
                 )
 
 
 def addremove(repo, matcher, prefix, uipathfn, opts=None):
     if opts is None:
         opts = {}
     m = matcher
     dry_run = opts.get(b'dry_run')
     try:
         similarity = float(opts.get(b'similarity') or 0)
     except ValueError:
         raise error.Abort(_(b'similarity must be a number'))
     if similarity < 0 or similarity > 100:
         raise error.Abort(_(b'similarity must be between 0 and 100'))
     similarity /= 100.0
 
     ret = 0
 
     wctx = repo[None]
     for subpath in sorted(wctx.substate):
         submatch = matchmod.subdirmatcher(subpath, m)
         if opts.get(b'subrepos') or m.exact(subpath) or any(submatch.files()):
             sub = wctx.sub(subpath)
             subprefix = repo.wvfs.reljoin(prefix, subpath)
             subuipathfn = subdiruipathfn(subpath, uipathfn)
             try:
                 if sub.addremove(submatch, subprefix, subuipathfn, opts):
                     ret = 1
             except error.LookupError:
                 repo.ui.status(
                     _(b"skipping missing subrepository: %s\n")
                     % uipathfn(subpath)
                 )
 
     rejected = []
 
     def badfn(f, msg):
         if f in m.files():
             m.bad(f, msg)
         rejected.append(f)
 
     badmatch = matchmod.badmatch(m, badfn)
     added, unknown, deleted, removed, forgotten = _interestingfiles(
         repo, badmatch
     )
 
     unknownset = set(unknown + forgotten)
     toprint = unknownset.copy()
     toprint.update(deleted)
     for abs in sorted(toprint):
         if repo.ui.verbose or not m.exact(abs):
             if abs in unknownset:
                 status = _(b'adding %s\n') % uipathfn(abs)
                 label = b'ui.addremove.added'
             else:
                 status = _(b'removing %s\n') % uipathfn(abs)
                 label = b'ui.addremove.removed'
             repo.ui.status(status, label=label)
 
     renames = _findrenames(
         repo, m, added + unknown, removed + deleted, similarity, uipathfn
     )
 
     if not dry_run:
         _markchanges(repo, unknown + forgotten, deleted, renames)
 
     for f in rejected:
         if f in m.files():
             return 1
     return ret
 
 
 def marktouched(repo, files, similarity=0.0):
     """Assert that files have somehow been operated upon. files are relative to
     the repo root."""
     m = matchfiles(repo, files, badfn=lambda x, y: rejected.append(x))
     rejected = []
 
     added, unknown, deleted, removed, forgotten = _interestingfiles(repo, m)
 
     if repo.ui.verbose:
         unknownset = set(unknown + forgotten)
         toprint = unknownset.copy()
         toprint.update(deleted)
         for abs in sorted(toprint):
             if abs in unknownset:
                 status = _(b'adding %s\n') % abs
             else:
                 status = _(b'removing %s\n') % abs
             repo.ui.status(status)
 
     # TODO: We should probably have the caller pass in uipathfn and apply it to
     # the messages above too. legacyrelativevalue=True is consistent with how
     # it used to work.
     uipathfn = getuipathfn(repo, legacyrelativevalue=True)
     renames = _findrenames(
         repo, m, added + unknown, removed + deleted, similarity, uipathfn
     )
 
     _markchanges(repo, unknown + forgotten, deleted, renames)
 
     for f in rejected:
         if f in m.files():
             return 1
     return 0
 
 
 def _interestingfiles(repo, matcher):
     """Walk dirstate with matcher, looking for files that addremove would care
     about.
 
     This is different from dirstate.status because it doesn't care about
     whether files are modified or clean."""
     added, unknown, deleted, removed, forgotten = [], [], [], [], []
     audit_path = pathutil.pathauditor(repo.root, cached=True)
 
     ctx = repo[None]
     dirstate = repo.dirstate
     matcher = repo.narrowmatch(matcher, includeexact=True)
     walkresults = dirstate.walk(
         matcher,
         subrepos=sorted(ctx.substate),
         unknown=True,
         ignored=False,
         full=False,
     )
     for abs, st in pycompat.iteritems(walkresults):
         dstate = dirstate[abs]
         if dstate == b'?' and audit_path.check(abs):
             unknown.append(abs)
         elif dstate != b'r' and not st:
             deleted.append(abs)
         elif dstate == b'r' and st:
             forgotten.append(abs)
         # for finding renames
         elif dstate == b'r' and not st:
             removed.append(abs)
         elif dstate == b'a':
             added.append(abs)
 
     return added, unknown, deleted, removed, forgotten
 
 
 def _findrenames(repo, matcher, added, removed, similarity, uipathfn):
     '''Find renames from removed files to added ones.'''
     renames = {}
     if similarity > 0:
         for old, new, score in similar.findrenames(
             repo, added, removed, similarity
         ):
             if (
                 repo.ui.verbose
                 or not matcher.exact(old)
                 or not matcher.exact(new)
             ):
                 repo.ui.status(
                     _(
                         b'recording removal of %s as rename to %s '
                         b'(%d%% similar)\n'
                     )
                     % (uipathfn(old), uipathfn(new), score * 100)
                 )
             renames[new] = old
     return renames
 
 
 def _markchanges(repo, unknown, deleted, renames):
     """Marks the files in unknown as added, the files in deleted as removed,
     and the files in renames as copied."""
     wctx = repo[None]
     with repo.wlock():
         wctx.forget(deleted)
         wctx.add(unknown)
         for new, old in pycompat.iteritems(renames):
             wctx.copy(old, new)
 
 
 def getrenamedfn(repo, endrev=None):
     if copiesmod.usechangesetcentricalgo(repo):
 
         def getrenamed(fn, rev):
             ctx = repo[rev]
             p1copies = ctx.p1copies()
             if fn in p1copies:
                 return p1copies[fn]
             p2copies = ctx.p2copies()
             if fn in p2copies:
                 return p2copies[fn]
             return None
 
         return getrenamed
 
     rcache = {}
     if endrev is None:
         endrev = len(repo)
 
     def getrenamed(fn, rev):
         """looks up all renames for a file (up to endrev) the first
         time the file is given. It indexes on the changerev and only
         parses the manifest if linkrev != changerev.
         Returns rename info for fn at changerev rev."""
         if fn not in rcache:
             rcache[fn] = {}
             fl = repo.file(fn)
             for i in fl:
                 lr = fl.linkrev(i)
                 renamed = fl.renamed(fl.node(i))
                 rcache[fn][lr] = renamed and renamed[0]
                 if lr >= endrev:
                     break
         if rev in rcache[fn]:
             return rcache[fn][rev]
 
         # If linkrev != rev (i.e. rev not found in rcache) fallback to
         # filectx logic.
         try:
             return repo[rev][fn].copysource()
         except error.LookupError:
             return None
 
     return getrenamed
 
 
 def getcopiesfn(repo, endrev=None):
     if copiesmod.usechangesetcentricalgo(repo):
 
         def copiesfn(ctx):
             if ctx.p2copies():
                 allcopies = ctx.p1copies().copy()
                 # There should be no overlap
                 allcopies.update(ctx.p2copies())
                 return sorted(allcopies.items())
             else:
                 return sorted(ctx.p1copies().items())
 
     else:
         getrenamed = getrenamedfn(repo, endrev)
 
         def copiesfn(ctx):
             copies = []
             for fn in ctx.files():
                 rename = getrenamed(fn, ctx.rev())
                 if rename:
                     copies.append((fn, rename))
             return copies
 
     return copiesfn
 
 
 def dirstatecopy(ui, repo, wctx, src, dst, dryrun=False, cwd=None):
     """Update the dirstate to reflect the intent of copying src to dst. For
     different reasons it might not end with dst being marked as copied from src.
     """
     origsrc = repo.dirstate.copied(src) or src
     if dst == origsrc:  # copying back a copy?
         if repo.dirstate[dst] not in b'mn' and not dryrun:
             repo.dirstate.set_tracked(dst)
     else:
         if repo.dirstate[origsrc] == b'a' and origsrc == src:
             if not ui.quiet:
                 ui.warn(
                     _(
                         b"%s has not been committed yet, so no copy "
                         b"data will be stored for %s.\n"
                     )
                     % (repo.pathto(origsrc, cwd), repo.pathto(dst, cwd))
                 )
             if repo.dirstate[dst] in b'?r' and not dryrun:
                 wctx.add([dst])
         elif not dryrun:
             wctx.copy(origsrc, dst)
 
 
 def movedirstate(repo, newctx, match=None):
     """Move the dirstate to newctx and adjust it as necessary.
 
     A matcher can be provided as an optimization. It is probably a bug to pass
     a matcher that doesn't match all the differences between the parent of the
     working copy and newctx.
     """
     oldctx = repo[b'.']
     ds = repo.dirstate
     copies = dict(ds.copies())
     ds.setparents(newctx.node(), repo.nullid)
     s = newctx.status(oldctx, match=match)
 
     for f in s.modified:
         ds.update_file_p1(f, p1_tracked=True)
 
     for f in s.added:
         ds.update_file_p1(f, p1_tracked=False)
 
     for f in s.removed:
         ds.update_file_p1(f, p1_tracked=True)
 
     # Merge old parent and old working dir copies
     oldcopies = copiesmod.pathcopies(newctx, oldctx, match)
     oldcopies.update(copies)
     copies = {
         dst: oldcopies.get(src, src)
         for dst, src in pycompat.iteritems(oldcopies)
     }
     # Adjust the dirstate copies
     for dst, src in pycompat.iteritems(copies):
         if src not in newctx or dst in newctx or ds[dst] != b'a':
             src = None
         ds.copy(src, dst)
     repo._quick_access_changeid_invalidate()
 
 
 def filterrequirements(requirements):
     """filters the requirements into two sets:
 
     wcreq: requirements which should be written in .hg/requires
     storereq: which should be written in .hg/store/requires
 
     Returns (wcreq, storereq)
     """
     if requirementsmod.SHARESAFE_REQUIREMENT in requirements:
         wc, store = set(), set()
         for r in requirements:
             if r in requirementsmod.WORKING_DIR_REQUIREMENTS:
                 wc.add(r)
             else:
                 store.add(r)
         return wc, store
     return requirements, None
 
 
 def istreemanifest(repo):
     """returns whether the repository is using treemanifest or not"""
     return requirementsmod.TREEMANIFEST_REQUIREMENT in repo.requirements
 
 
 def writereporequirements(repo, requirements=None):
     """writes requirements for the repo
 
     Requirements are written to .hg/requires and .hg/store/requires based
     on whether share-safe mode is enabled and which requirements are wdir
     requirements and which are store requirements
     """
     if requirements:
         repo.requirements = requirements
     wcreq, storereq = filterrequirements(repo.requirements)
     if wcreq is not None:
         writerequires(repo.vfs, wcreq)
     if storereq is not None:
         writerequires(repo.svfs, storereq)
     elif repo.ui.configbool(b'format', b'usestore'):
         # only remove store requires if we are using store
         repo.svfs.tryunlink(b'requires')
 
 
 def writerequires(opener, requirements):
     with opener(b'requires', b'w', atomictemp=True) as fp:
         for r in sorted(requirements):
             fp.write(b"%s\n" % r)
 
 
 class filecachesubentry(object):
     def __init__(self, path, stat):
         self.path = path
         self.cachestat = None
         self._cacheable = None
 
         if stat:
             self.cachestat = filecachesubentry.stat(self.path)
 
             if self.cachestat:
                 self._cacheable = self.cachestat.cacheable()
             else:
                 # None means we don't know yet
                 self._cacheable = None
 
     def refresh(self):
         if self.cacheable():
             self.cachestat = filecachesubentry.stat(self.path)
 
     def cacheable(self):
         if self._cacheable is not None:
             return self._cacheable
 
         # we don't know yet, assume it is for now
         return True
 
     def changed(self):
         # no point in going further if we can't cache it
         if not self.cacheable():
             return True
 
         newstat = filecachesubentry.stat(self.path)
 
         # we may not know if it's cacheable yet, check again now
         if newstat and self._cacheable is None:
             self._cacheable = newstat.cacheable()
 
             # check again
             if not self._cacheable:
                 return True
 
         if self.cachestat != newstat:
             self.cachestat = newstat
             return True
         else:
             return False
 
     @staticmethod
     def stat(path):
         try:
             return util.cachestat(path)
         except OSError as e:
             if e.errno != errno.ENOENT:
                 raise
 
 
 class filecacheentry(object):
     def __init__(self, paths, stat=True):
         self._entries = []
         for path in paths:
             self._entries.append(filecachesubentry(path, stat))
 
     def changed(self):
         '''true if any entry has changed'''
         for entry in self._entries:
             if entry.changed():
                 return True
         return False
 
     def refresh(self):
         for entry in self._entries:
             entry.refresh()
 
 
 class filecache(object):
     """A property like decorator that tracks files under .hg/ for updates.
 
     On first access, the files defined as arguments are stat()ed and the
     results cached. The decorated function is called. The results are stashed
     away in a ``_filecache`` dict on the object whose method is decorated.
 
     On subsequent access, the cached result is used as it is set to the
     instance dictionary.
 
     On external property set/delete operations, the caller must update the
     corresponding _filecache entry appropriately. Use __class__.<attr>.set()
     instead of directly setting <attr>.
 
     When using the property API, the cached data is always used if available.
     No stat() is performed to check if the file has changed.
 
     Others can muck about with the state of the ``_filecache`` dict. e.g. they
     can populate an entry before the property's getter is called. In this case,
     entries in ``_filecache`` will be used during property operations,
     if available. If the underlying file changes, it is up to external callers
     to reflect this by e.g. calling ``delattr(obj, attr)`` to remove the cached
     method result as well as possibly calling ``del obj._filecache[attr]`` to
     remove the ``filecacheentry``.
     """
 
     def __init__(self, *paths):
         self.paths = paths
 
     def join(self, obj, fname):
         """Used to compute the runtime path of a cached file.
 
         Users should subclass filecache and provide their own version of this
         function to call the appropriate join function on 'obj' (an instance
         of the class that its member function was decorated).
         """
         raise NotImplementedError
 
     def __call__(self, func):
         self.func = func
         self.sname = func.__name__
         self.name = pycompat.sysbytes(self.sname)
         return self
 
     def __get__(self, obj, type=None):
         # if accessed on the class, return the descriptor itself.
         if obj is None:
             return self
 
         assert self.sname not in obj.__dict__
 
         entry = obj._filecache.get(self.name)
 
         if entry:
             if entry.changed():
                 entry.obj = self.func(obj)
         else:
             paths = [self.join(obj, path) for path in self.paths]
 
             # We stat -before- creating the object so our cache doesn't lie if
             # a writer modified between the time we read and stat
             entry = filecacheentry(paths, True)
             entry.obj = self.func(obj)
 
             obj._filecache[self.name] = entry
 
         obj.__dict__[self.sname] = entry.obj
         return entry.obj
 
     # don't implement __set__(), which would make __dict__ lookup as slow as
     # function call.
 
     def set(self, obj, value):
         if self.name not in obj._filecache:
             # we add an entry for the missing value because X in __dict__
             # implies X in _filecache
             paths = [self.join(obj, path) for path in self.paths]
             ce = filecacheentry(paths, False)
             obj._filecache[self.name] = ce
         else:
             ce = obj._filecache[self.name]
 
         ce.obj = value  # update cached copy
         obj.__dict__[self.sname] = value  # update copy returned by obj.x
 
 
 def extdatasource(repo, source):
     """Gather a map of rev -> value dict from the specified source
 
     A source spec is treated as a URL, with a special case shell: type
     for parsing the output from a shell command.
 
     The data is parsed as a series of newline-separated records where
     each record is a revision specifier optionally followed by a space
     and a freeform string value. If the revision is known locally, it
     is converted to a rev, otherwise the record is skipped.
 
     Note that both key and value are treated as UTF-8 and converted to
     the local encoding. This allows uniformity between local and
     remote data sources.
     """
 
     spec = repo.ui.config(b"extdata", source)
     if not spec:
         raise error.Abort(_(b"unknown extdata source '%s'") % source)
 
     data = {}
     src = proc = None
     try:
         if spec.startswith(b"shell:"):
             # external commands should be run relative to the repo root
             cmd = spec[6:]
             proc = subprocess.Popen(
                 procutil.tonativestr(cmd),
                 shell=True,
                 bufsize=-1,
                 close_fds=procutil.closefds,
                 stdout=subprocess.PIPE,
                 cwd=procutil.tonativestr(repo.root),
             )
             src = proc.stdout
         else:
             # treat as a URL or file
             src = url.open(repo.ui, spec)
         for l in src:
             if b" " in l:
                 k, v = l.strip().split(b" ", 1)
             else:
                 k, v = l.strip(), b""
 
             k = encoding.tolocal(k)
             try:
                 data[revsingle(repo, k).rev()] = encoding.tolocal(v)
             except (error.LookupError, error.RepoLookupError, error.InputError):
                 pass  # we ignore data for nodes that don't exist locally
     finally:
         if proc:
             try:
                 proc.communicate()
             except ValueError:
                 # This happens if we started iterating src and then
                 # get a parse error on a line. It should be safe to ignore.
                 pass
         if src:
             src.close()
     if proc and proc.returncode != 0:
         raise error.Abort(
             _(b"extdata command '%s' failed: %s")
             % (cmd, procutil.explainexit(proc.returncode))
         )
 
     return data
 
 
 class progress(object):
     def __init__(self, ui, updatebar, topic, unit=b"", total=None):
         self.ui = ui
         self.pos = 0
         self.topic = topic
         self.unit = unit
         self.total = total
         self.debug = ui.configbool(b'progress', b'debug')
         self._updatebar = updatebar
 
     def __enter__(self):
         return self
 
     def __exit__(self, exc_type, exc_value, exc_tb):
         self.complete()
 
     def update(self, pos, item=b"", total=None):
         assert pos is not None
         if total:
             self.total = total
         self.pos = pos
         self._updatebar(self.topic, self.pos, item, self.unit, self.total)
         if self.debug:
             self._printdebug(item)
 
     def increment(self, step=1, item=b"", total=None):
         self.update(self.pos + step, item, total)
 
     def complete(self):
         self.pos = None
         self.unit = b""
         self.total = None
         self._updatebar(self.topic, self.pos, b"", self.unit, self.total)
 
     def _printdebug(self, item):
         unit = b''
         if self.unit:
             unit = b' ' + self.unit
         if item:
             item = b' ' + item
 
         if self.total:
             pct = 100.0 * self.pos / self.total
             self.ui.debug(
                 b'%s:%s %d/%d%s (%4.2f%%)\n'
                 % (self.topic, item, self.pos, self.total, unit, pct)
             )
         else:
             self.ui.debug(b'%s:%s %d%s\n' % (self.topic, item, self.pos, unit))
 
 
 def gdinitconfig(ui):
     """helper function to know if a repo should be created as general delta"""
     # experimental config: format.generaldelta
     return ui.configbool(b'format', b'generaldelta') or ui.configbool(
         b'format', b'usegeneraldelta'
     )
 
 
 def gddeltaconfig(ui):
     """helper function to know if incoming delta should be optimised"""
     # experimental config: format.generaldelta
     return ui.configbool(b'format', b'generaldelta')
 
 
 class simplekeyvaluefile(object):
     """A simple file with key=value lines
 
     Keys must be alphanumerics and start with a letter, values must not
     contain '\n' characters"""
 
     firstlinekey = b'__firstline'
 
     def __init__(self, vfs, path, keys=None):
         self.vfs = vfs
         self.path = path
 
     def read(self, firstlinenonkeyval=False):
         """Read the contents of a simple key-value file
 
         'firstlinenonkeyval' indicates whether the first line of file should
         be treated as a key-value pair or reuturned fully under the
         __firstline key."""
         lines = self.vfs.readlines(self.path)
         d = {}
         if firstlinenonkeyval:
             if not lines:
                 e = _(b"empty simplekeyvalue file")
                 raise error.CorruptedState(e)
             # we don't want to include '\n' in the __firstline
             d[self.firstlinekey] = lines[0][:-1]
             del lines[0]
 
         try:
             # the 'if line.strip()' part prevents us from failing on empty
             # lines which only contain '\n' therefore are not skipped
             # by 'if line'
             updatedict = dict(
                 line[:-1].split(b'=', 1) for line in lines if line.strip()
             )
             if self.firstlinekey in updatedict:
                 e = _(b"%r can't be used as a key")
                 raise error.CorruptedState(e % self.firstlinekey)
             d.update(updatedict)
         except ValueError as e:
             raise error.CorruptedState(stringutil.forcebytestr(e))
         return d
 
     def write(self, data, firstline=None):
         """Write key=>value mapping to a file
         data is a dict. Keys must be alphanumerical and start with a letter.
         Values must not contain newline characters.
 
         If 'firstline' is not None, it is written to file before
         everything else, as it is, not in a key=value form"""
         lines = []
         if firstline is not None:
             lines.append(b'%s\n' % firstline)
 
         for k, v in data.items():
             if k == self.firstlinekey:
                 e = b"key name '%s' is reserved" % self.firstlinekey
                 raise error.ProgrammingError(e)
             if not k[0:1].isalpha():
                 e = b"keys must start with a letter in a key-value file"
                 raise error.ProgrammingError(e)
             if not k.isalnum():
                 e = b"invalid key name in a simple key-value file"
                 raise error.ProgrammingError(e)
             if b'\n' in v:
                 e = b"invalid value in a simple key-value file"
                 raise error.ProgrammingError(e)
             lines.append(b"%s=%s\n" % (k, v))
         with self.vfs(self.path, mode=b'wb', atomictemp=True) as fp:
             fp.write(b''.join(lines))
 
 
 _reportobsoletedsource = [
     b'debugobsolete',
     b'pull',
     b'push',
     b'serve',
     b'unbundle',
 ]
 
 _reportnewcssource = [
     b'pull',
     b'unbundle',
 ]
 
 
 def prefetchfiles(repo, revmatches):
     """Invokes the registered file prefetch functions, allowing extensions to
     ensure the corresponding files are available locally, before the command
     uses them.
 
     Args:
       revmatches: a list of (revision, match) tuples to indicate the files to
       fetch at each revision. If any of the match elements is None, it matches
       all files.
     """
 
     def _matcher(m):
         if m:
             assert isinstance(m, matchmod.basematcher)
             # The command itself will complain about files that don't exist, so
             # don't duplicate the message.
             return matchmod.badmatch(m, lambda fn, msg: None)
         else:
             return matchall(repo)
 
     revbadmatches = [(rev, _matcher(match)) for (rev, match) in revmatches]
 
     fileprefetchhooks(repo, revbadmatches)
 
 
 # a list of (repo, revs, match) prefetch functions
 fileprefetchhooks = util.hooks()
 
 # A marker that tells the evolve extension to suppress its own reporting
 _reportstroubledchangesets = True
 
 
 def registersummarycallback(repo, otr, txnname=b'', as_validator=False):
     """register a callback to issue a summary after the transaction is closed
 
     If as_validator is true, then the callbacks are registered as transaction
     validators instead
     """
 
     def txmatch(sources):
         return any(txnname.startswith(source) for source in sources)
 
     categories = []
 
     def reportsummary(func):
         """decorator for report callbacks."""
         # The repoview life cycle is shorter than the one of the actual
         # underlying repository. So the filtered object can die before the
         # weakref is used leading to troubles. We keep a reference to the
         # unfiltered object and restore the filtering when retrieving the
         # repository through the weakref.
         filtername = repo.filtername
         reporef = weakref.ref(repo.unfiltered())
 
         def wrapped(tr):
             repo = reporef()
             if filtername:
                 assert repo is not None  # help pytype
                 repo = repo.filtered(filtername)
             func(repo, tr)
 
         newcat = b'%02i-txnreport' % len(categories)
         if as_validator:
             otr.addvalidator(newcat, wrapped)
         else:
             otr.addpostclose(newcat, wrapped)
         categories.append(newcat)
         return wrapped
 
     @reportsummary
     def reportchangegroup(repo, tr):
         cgchangesets = tr.changes.get(b'changegroup-count-changesets', 0)
         cgrevisions = tr.changes.get(b'changegroup-count-revisions', 0)
         cgfiles = tr.changes.get(b'changegroup-count-files', 0)
         cgheads = tr.changes.get(b'changegroup-count-heads', 0)
         if cgchangesets or cgrevisions or cgfiles:
             htext = b""
             if cgheads:
                 htext = _(b" (%+d heads)") % cgheads
             msg = _(b"added %d changesets with %d changes to %d files%s\n")
             if as_validator:
                 msg = _(b"adding %d changesets with %d changes to %d files%s\n")
             assert repo is not None  # help pytype
             repo.ui.status(msg % (cgchangesets, cgrevisions, cgfiles, htext))
 
     if txmatch(_reportobsoletedsource):
 
         @reportsummary
         def reportobsoleted(repo, tr):
             obsoleted = obsutil.getobsoleted(repo, tr)
             newmarkers = len(tr.changes.get(b'obsmarkers', ()))
             if newmarkers:
                 repo.ui.status(_(b'%i new obsolescence markers\n') % newmarkers)
             if obsoleted:
                 msg = _(b'obsoleted %i changesets\n')
                 if as_validator:
                     msg = _(b'obsoleting %i changesets\n')
                 repo.ui.status(msg % len(obsoleted))
 
     if obsolete.isenabled(
         repo, obsolete.createmarkersopt
     ) and repo.ui.configbool(
         b'experimental', b'evolution.report-instabilities'
     ):
         instabilitytypes = [
             (b'orphan', b'orphan'),
             (b'phase-divergent', b'phasedivergent'),
             (b'content-divergent', b'contentdivergent'),
         ]
 
         def getinstabilitycounts(repo):
             filtered = repo.changelog.filteredrevs
             counts = {}
             for instability, revset in instabilitytypes:
                 counts[instability] = len(
                     set(obsolete.getrevs(repo, revset)) - filtered
                 )
             return counts
 
         oldinstabilitycounts = getinstabilitycounts(repo)
 
         @reportsummary
         def reportnewinstabilities(repo, tr):
             newinstabilitycounts = getinstabilitycounts(repo)
             for instability, revset in instabilitytypes:
                 delta = (
                     newinstabilitycounts[instability]
                     - oldinstabilitycounts[instability]
                 )
                 msg = getinstabilitymessage(delta, instability)
                 if msg:
                     repo.ui.warn(msg)
 
     if txmatch(_reportnewcssource):
 
         @reportsummary
         def reportnewcs(repo, tr):
             """Report the range of new revisions pulled/unbundled."""
             origrepolen = tr.changes.get(b'origrepolen', len(repo))
             unfi = repo.unfiltered()
             if origrepolen >= len(unfi):
                 return
 
             # Compute the bounds of new visible revisions' range.
             revs = smartset.spanset(repo, start=origrepolen)
             if revs:
                 minrev, maxrev = repo[revs.min()], repo[revs.max()]
 
                 if minrev == maxrev:
                     revrange = minrev
                 else:
                     revrange = b'%s:%s' % (minrev, maxrev)
                 draft = len(repo.revs(b'%ld and draft()', revs))
                 secret = len(repo.revs(b'%ld and secret()', revs))
                 if not (draft or secret):
                     msg = _(b'new changesets %s\n') % revrange
                 elif draft and secret:
                     msg = _(b'new changesets %s (%d drafts, %d secrets)\n')
                     msg %= (revrange, draft, secret)
                 elif draft:
                     msg = _(b'new changesets %s (%d drafts)\n')
                     msg %= (revrange, draft)
                 elif secret:
                     msg = _(b'new changesets %s (%d secrets)\n')
                     msg %= (revrange, secret)
                 else:
                     errormsg = b'entered unreachable condition'
                     raise error.ProgrammingError(errormsg)
                 repo.ui.status(msg)
 
             # search new changesets directly pulled as obsolete
             duplicates = tr.changes.get(b'revduplicates', ())
             obsadded = unfi.revs(
                 b'(%d: + %ld) and obsolete()', origrepolen, duplicates
             )
             cl = repo.changelog
             extinctadded = [r for r in obsadded if r not in cl]
             if extinctadded:
                 # They are not just obsolete, but obsolete and invisible
                 # we call them "extinct" internally but the terms have not been
                 # exposed to users.
                 msg = b'(%d other changesets obsolete on arrival)\n'
                 repo.ui.status(msg % len(extinctadded))
 
         @reportsummary
         def reportphasechanges(repo, tr):
             """Report statistics of phase changes for changesets pre-existing
             pull/unbundle.
             """
             origrepolen = tr.changes.get(b'origrepolen', len(repo))
             published = []
             for revs, (old, new) in tr.changes.get(b'phases', []):
                 if new != phases.public:
                     continue
                 published.extend(rev for rev in revs if rev < origrepolen)
             if not published:
                 return
             msg = _(b'%d local changesets published\n')
             if as_validator:
                 msg = _(b'%d local changesets will be published\n')
             repo.ui.status(msg % len(published))
 
 
 def getinstabilitymessage(delta, instability):
     """function to return the message to show warning about new instabilities
 
     exists as a separate function so that extension can wrap to show more
     information like how to fix instabilities"""
     if delta > 0:
         return _(b'%i new %s changesets\n') % (delta, instability)
 
 
 def nodesummaries(repo, nodes, maxnumnodes=4):
     if len(nodes) <= maxnumnodes or repo.ui.verbose:
         return b' '.join(short(h) for h in nodes)
     first = b' '.join(short(h) for h in nodes[:maxnumnodes])
     return _(b"%s and %d others") % (first, len(nodes) - maxnumnodes)
 
 
 def enforcesinglehead(repo, tr, desc, accountclosed, filtername):
     """check that no named branch has multiple heads"""
     if desc in (b'strip', b'repair'):
         # skip the logic during strip
         return
     visible = repo.filtered(filtername)
     # possible improvement: we could restrict the check to affected branch
     bm = visible.branchmap()
     for name in bm:
         heads = bm.branchheads(name, closed=accountclosed)
         if len(heads) > 1:
             msg = _(b'rejecting multiple heads on branch "%s"')
             msg %= name
             hint = _(b'%d heads: %s')
             hint %= (len(heads), nodesummaries(repo, heads))
             raise error.Abort(msg, hint=hint)
 
 
 def wrapconvertsink(sink):
     """Allow extensions to wrap the sink returned by convcmd.convertsink()
     before it is used, whether or not the convert extension was formally loaded.
     """
     return sink
 
 
 def unhidehashlikerevs(repo, specs, hiddentype):
     """parse the user specs and unhide changesets whose hash or revision number
     is passed.
 
     hiddentype can be: 1) 'warn': warn while unhiding changesets
                        2) 'nowarn': don't warn while unhiding changesets
 
     returns a repo object with the required changesets unhidden
     """
     if not repo.filtername or not repo.ui.configbool(
         b'experimental', b'directaccess'
     ):
         return repo
 
     if repo.filtername not in (b'visible', b'visible-hidden'):
         return repo
 
     symbols = set()
     for spec in specs:
         try:
             tree = revsetlang.parse(spec)
         except error.ParseError:  # will be reported by scmutil.revrange()
             continue
 
         symbols.update(revsetlang.gethashlikesymbols(tree))
 
     if not symbols:
         return repo
 
     revs = _getrevsfromsymbols(repo, symbols)
 
     if not revs:
         return repo
 
     if hiddentype == b'warn':
         unfi = repo.unfiltered()
         revstr = b", ".join([pycompat.bytestr(unfi[l]) for l in revs])
         repo.ui.warn(
             _(
                 b"warning: accessing hidden changesets for write "
                 b"operation: %s\n"
             )
             % revstr
         )
 
     # we have to use new filtername to separate branch/tags cache until we can
     # disbale these cache when revisions are dynamically pinned.
     return repo.filtered(b'visible-hidden', revs)
 
 
 def _getrevsfromsymbols(repo, symbols):
     """parse the list of symbols and returns a set of revision numbers of hidden
     changesets present in symbols"""
     revs = set()
     unfi = repo.unfiltered()
     unficl = unfi.changelog
     cl = repo.changelog
     tiprev = len(unficl)
     allowrevnums = repo.ui.configbool(b'experimental', b'directaccess.revnums')
     for s in symbols:
         try:
             n = int(s)
             if n <= tiprev:
                 if not allowrevnums:
                     continue
                 else:
                     if n not in cl:
                         revs.add(n)
                     continue
         except ValueError:
             pass
 
         try:
             s = resolvehexnodeidprefix(unfi, s)
         except (error.LookupError, error.WdirUnsupported):
             s = None
 
         if s is not None:
             rev = unficl.rev(s)
             if rev not in cl:
                 revs.add(rev)
 
     return revs
 
 
 def bookmarkrevs(repo, mark):
     """Select revisions reachable by a given bookmark
 
     If the bookmarked revision isn't a head, an empty set will be returned.
     """
     return repo.revs(format_bookmark_revspec(mark))
 
 
 def format_bookmark_revspec(mark):
     """Build a revset expression to select revisions reachable by a given
     bookmark"""
     mark = b'literal:' + mark
     return revsetlang.formatspec(
         b"ancestors(bookmark(%s)) - "
         b"ancestors(head() and not bookmark(%s)) - "
         b"ancestors(bookmark() and not bookmark(%s))",
         mark,
         mark,
         mark,
     )

tests/test-diff-change.t

@@ -1,298 +1,298 b''
 Testing diff --change, --from, --to
 
   $ hg init a
   $ cd a
 
   $ echo "first" > file.txt
   $ hg add file.txt
   $ hg commit -m 'first commit' # 0
 
   $ echo "second" > file.txt
   $ hg commit -m 'second commit' # 1
 
   $ echo "third" > file.txt
   $ hg commit -m 'third commit' # 2
 
   $ hg diff --nodates --change 1
   diff -r 4bb65dda5db4 -r e9b286083166 file.txt
   --- a/file.txt
   +++ b/file.txt
   @@ -1,1 +1,1 @@
   -first
   +second
 
   $ hg diff --change e9b286083166
   diff -r 4bb65dda5db4 -r e9b286083166 file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -first
   +second
 
 Test --from and --to
 
   $ hg diff --from . --rev .
   abort: cannot specify both --from and --rev
   [10]
   $ hg diff --to . --rev .
   abort: cannot specify both --to and --rev
   [10]
   $ hg diff --from . --change .
   abort: cannot specify both --from and --change
   [10]
   $ hg diff --to . --change .
   abort: cannot specify both --to and --change
   [10]
   $ echo dirty > file.txt
   $ hg diff --from .
   diff -r bf5ff72eb7e0 file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -third
   +dirty
   $ hg diff --from . --reverse
   diff -r bf5ff72eb7e0 file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -dirty
   +third
   $ hg diff --to .
   diff -r bf5ff72eb7e0 file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -dirty
   +third
   $ hg diff --from 0 --to 2
   diff -r 4bb65dda5db4 -r bf5ff72eb7e0 file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -first
   +third
   $ hg diff --from 2 --to 0
   diff -r bf5ff72eb7e0 -r 4bb65dda5db4 file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -third
   +first
   $ hg co -C .
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ cd ..
 
 Test dumb revspecs: top-level "x:y", "x:", ":y" and ":" ranges should be handled
 as pairs even if x == y, but not for "f(x:y)" nor "x::y" (issue3474, issue4774)
 
   $ hg clone -q a dumbspec
   $ cd dumbspec
   $ echo "wdir" > file.txt
 
   $ hg diff -r 2:2
   $ hg diff -r 2:.
   $ hg diff -r 2:
   $ hg diff -r :0
   $ hg diff -r '2:first(2:2)'
   $ hg diff -r 'first(2:2)' --nodates
   diff -r bf5ff72eb7e0 file.txt
   --- a/file.txt
   +++ b/file.txt
   @@ -1,1 +1,1 @@
   -third
   +wdir
   $ hg diff -r '(2:2)' --nodates
   diff -r bf5ff72eb7e0 file.txt
   --- a/file.txt
   +++ b/file.txt
   @@ -1,1 +1,1 @@
   -third
   +wdir
   $ hg diff -r 2::2 --nodates
   diff -r bf5ff72eb7e0 file.txt
   --- a/file.txt
   +++ b/file.txt
   @@ -1,1 +1,1 @@
   -third
   +wdir
   $ hg diff -r "2 and 1"
   abort: empty revision range
-  [255]
+  [10]
 
   $ cd ..
 
   $ hg clone -qr0 a dumbspec-rev0
   $ cd dumbspec-rev0
   $ echo "wdir" > file.txt
 
   $ hg diff -r :
   $ hg diff -r 'first(:)' --nodates
   diff -r 4bb65dda5db4 file.txt
   --- a/file.txt
   +++ b/file.txt
   @@ -1,1 +1,1 @@
   -first
   +wdir
 
   $ cd ..
 
 Testing diff --change when merge:
 
   $ cd a
 
   $ for i in 1 2 3 4 5 6 7 8 9 10; do
   >    echo $i >> file.txt
   > done
   $ hg commit -m "lots of text" # 3
 
   $ sed -e 's,^2$,x,' file.txt > file.txt.tmp
   $ mv file.txt.tmp file.txt
   $ hg commit -m "change 2 to x" # 4
 
   $ hg up -r 3
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ sed -e 's,^8$,y,' file.txt > file.txt.tmp
   $ mv file.txt.tmp file.txt
   $ hg commit -m "change 8 to y"
   created new head
 
   $ hg up -C -r 4
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge -r 5
   merging file.txt
   0 files updated, 1 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg commit -m "merge 8 to y" # 6
 
   $ hg diff --change 5
   diff -r ae119d680c82 -r 9085c5c02e52 file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -6,6 +6,6 @@
    5
    6
    7
   -8
   +y
    9
    10
 
 must be similar to 'hg diff --change 5':
 
   $ hg diff -c 6
   diff -r 273b50f17c6d -r 979ca961fd2e file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -6,6 +6,6 @@
    5
    6
    7
   -8
   +y
    9
    10
 
 merge diff should show only manual edits to a merge:
 
   $ hg diff --config diff.merge=yes -c 6
 (no diff output is expected here)
 
 Construct an "evil merge" that does something other than just the merge.
 
   $ hg co ".^"
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge -r 5
   merging file.txt
   0 files updated, 1 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ echo 11 >> file.txt
   $ hg ci -m 'merge 8 to y with manual edit of 11' # 7
   created new head
   $ hg diff -c 7
   diff -r 273b50f17c6d -r 8ad85e839ba7 file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -6,6 +6,7 @@
    5
    6
    7
   -8
   +y
    9
    10
   +11
 Contrast with the `hg diff -c 7` version above: only the manual edit shows
 up, making it easy to identify changes someone is otherwise trying to sneak
 into a merge.
   $ hg diff --config diff.merge=yes -c 7
   diff -r 8ad85e839ba7 file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -9,3 +9,4 @@
    y
    9
    10
   +11
 
 Set up a conflict.
   $ hg co ".^"
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ sed -e 's,^8$,z,' file.txt > file.txt.tmp
   $ mv file.txt.tmp file.txt
   $ hg ci -m 'conflicting edit: 8 to z'
   created new head
   $ echo "this file is new in p1 of the merge" > new-file-p1.txt
   $ hg ci -Am 'new file' new-file-p1.txt
   $ hg log -r . --template 'p1 will be rev {rev}\n'
   p1 will be rev 9
   $ hg co 5
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo "this file is new in p2 of the merge" > new-file-p2.txt
   $ hg ci -Am 'new file' new-file-p2.txt
   created new head
   $ hg log -r . --template 'p2 will be rev {rev}\n'
   p2 will be rev 10
   $ hg co -- 9
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg merge -r 10
   merging file.txt
   warning: conflicts while merging file.txt! (edit, then use 'hg resolve --mark')
   1 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
   [1]
   $ hg revert file.txt -r .
   $ hg resolve -ma
   (no more unresolved files)
   $ hg commit -m 'merge conflicted edit'
 Without diff.merge, it's a diff against p1
   $ hg diff --config diff.merge=no -c 11
   diff -r fd1f17c90d7c -r 5010caab09f6 new-file-p2.txt
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/new-file-p2.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +this file is new in p2 of the merge
 With diff.merge, it's a diff against the conflicted content.
   $ hg diff --config diff.merge=yes -c 11
   diff -r 5010caab09f6 file.txt
   --- a/file.txt	Thu Jan 01 00:00:00 1970 +0000
   +++ b/file.txt	Thu Jan 01 00:00:00 1970 +0000
   @@ -6,12 +6,6 @@
    5
    6
    7
   -<<<<<<< local: fd1f17c90d7c - test: new file
    z
   -||||||| base
   -8
   -=======
   -y
   ->>>>>>> other: d9e7de69eac3 - test: new file
    9
    10
 
 There must _NOT_ be a .hg/merge directory leftover.
   $ test ! -d .hg/merge
 (No output is expected)
   $ cd ..

tests/test-extdiff.t

@@ -1,555 +1,555 b''
   $ echo "[extensions]" >> $HGRCPATH
   $ echo "extdiff=" >> $HGRCPATH
 
   $ hg init a
   $ cd a
   $ echo a > a
   $ echo b > b
   $ hg add
   adding a
   adding b
 
 Should diff cloned directories:
 
   $ hg extdiff -o -r
   Only in a: a
   Only in a: b
   [1]
 
   $ cat <<EOF >> $HGRCPATH
   > [extdiff]
   > cmd.falabala = echo
   > opts.falabala = diffing
   > cmd.edspace = echo
   > opts.edspace = "name  <[e-mail]>"
   > alabalaf =
   > [merge-tools]
   > alabalaf.executable = echo
   > alabalaf.diffargs = diffing
   > EOF
 
   $ hg falabala
   diffing a.000000000000 a
   [1]
 
   $ hg help falabala
   hg falabala [OPTION]... [FILE]...
   
   use external program to diff repository (or selected files)
   
       Show differences between revisions for the specified files, using the
       following program:
   
         'echo'
   
       When two revision arguments are given, then changes are shown between
       those revisions. If only one revision is specified then that revision is
       compared to the working directory, and, when no revisions are specified,
       the working directory files are compared to its parent.
   
   options ([+] can be repeated):
   
    -o --option OPT [+]      pass option to comparison program
       --from REV1           revision to diff from
       --to REV2             revision to diff to
    -c --change REV          change made by revision
       --per-file            compare each file instead of revision snapshots
       --confirm             prompt user before each external program invocation
       --patch               compare patches for two revisions
    -I --include PATTERN [+] include names matching the given patterns
    -X --exclude PATTERN [+] exclude names matching the given patterns
    -S --subrepos            recurse into subrepositories
   
   (some details hidden, use --verbose to show complete help)
 
   $ hg ci -d '0 0' -mtest1
 
   $ echo b >> a
   $ hg ci -d '1 0' -mtest2
 
 Should diff cloned files directly:
 
   $ hg falabala --from 0 --to 1
   diffing "*\\extdiff.*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   diffing */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
 Can show diff from working copy:
   $ echo c >> a
   $ hg falabala --to 1
   diffing "*\\extdiff.*\\a" "a.34eed99112ab\\a" (glob) (windows !)
   diffing */extdiff.*/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
   $ hg revert a
   $ rm a.orig
 
 Specifying an empty revision should abort.
 
   $ hg extdiff -p diff --patch --rev 'ancestor()' --rev 1
   abort: empty revision on one side of range
-  [255]
+  [10]
 
 Test diff during merge:
 
   $ hg update -C 0
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo c >> c
   $ hg add c
   $ hg ci -m "new branch" -d '1 0'
   created new head
   $ hg merge 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 
 Should diff cloned file against wc file:
 
   $ hg falabala
   diffing "*\\extdiff.*\\a.2a13a4d2da36\\a" "*\\a\\a" (glob) (windows !)
   diffing */extdiff.*/a.2a13a4d2da36/a */a/a (glob) (no-windows !)
   [1]
 
 
 Test --change option:
 
   $ hg ci -d '2 0' -mtest3
 
   $ hg falabala -c 1
   diffing "*\\extdiff.*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   diffing */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
 Check diff are made from the first parent:
 
   $ hg falabala -c 3 || echo "diff-like tools yield a non-zero exit code"
   diffing "*\\extdiff.*\\a.2a13a4d2da36\\a" "a.46c0e4daeb72\\a" (glob) (windows !)
   diffing */extdiff.*/a.2a13a4d2da36/a a.46c0e4daeb72/a (glob) (no-windows !)
   diff-like tools yield a non-zero exit code
 
 issue3153: ensure using extdiff with removed subrepos doesn't crash:
 
   $ hg init suba
   $ cd suba
   $ echo suba > suba
   $ hg add
   adding suba
   $ hg ci -m "adding suba file"
   $ cd ..
   $ echo suba=suba > .hgsub
   $ hg add
   adding .hgsub
   $ hg ci -Sm "adding subrepo"
   $ echo > .hgsub
   $ hg ci -m "removing subrepo"
   $ hg falabala --from 4 --to 5 -S
   diffing a.398e36faf9c6 a.5ab95fb166c4
   [1]
 
 Test --per-file option:
 
   $ hg up -q -C 3
   $ echo a2 > a
   $ echo b2 > b
   $ hg ci -d '3 0' -mtestmode1
   created new head
   $ hg falabala -c 6 --per-file
   diffing "*\\extdiff.*\\a.46c0e4daeb72\\a" "a.81906f2b98ac\\a" (glob) (windows !)
   diffing */extdiff.*/a.46c0e4daeb72/a a.81906f2b98ac/a (glob) (no-windows !)
   diffing "*\\extdiff.*\\a.46c0e4daeb72\\b" "a.81906f2b98ac\\b" (glob) (windows !)
   diffing */extdiff.*/a.46c0e4daeb72/b a.81906f2b98ac/b (glob) (no-windows !)
   [1]
 
 Test --per-file option for gui tool:
 
   $ hg --config extdiff.gui.alabalaf=True alabalaf -c 6 --per-file --debug
   diffing */extdiff.*/a.46c0e4daeb72/* a.81906f2b98ac/* (glob)
   diffing */extdiff.*/a.46c0e4daeb72/* a.81906f2b98ac/* (glob)
   making snapshot of 2 files from rev 46c0e4daeb72
     a
     b
   making snapshot of 2 files from rev 81906f2b98ac
     a
     b
   running '* diffing * *' in * (backgrounded) (glob)
   running '* diffing * *' in * (backgrounded) (glob)
   cleaning up temp directory
   [1]
 
 Test --per-file option for gui tool again:
 
   $ hg --config merge-tools.alabalaf.gui=True alabalaf -c 6 --per-file --debug
   diffing */extdiff.*/a.46c0e4daeb72/* a.81906f2b98ac/* (glob)
   diffing */extdiff.*/a.46c0e4daeb72/* a.81906f2b98ac/* (glob)
   making snapshot of 2 files from rev 46c0e4daeb72
     a
     b
   making snapshot of 2 files from rev 81906f2b98ac
     a
     b
   running '* diffing * *' in * (backgrounded) (glob)
   running '* diffing * *' in * (backgrounded) (glob)
   cleaning up temp directory
   [1]
 
 Test --per-file and --confirm options:
 
   $ hg --config ui.interactive=True falabala -c 6 --per-file --confirm <<EOF
   > n
   > y
   > EOF
   diff a (1 of 2) [Yns?] n
   diff b (2 of 2) [Yns?] y
   diffing "*\\extdiff.*\\a.46c0e4daeb72\\b" "a.81906f2b98ac\\b" (glob) (windows !)
   diffing */extdiff.*/a.46c0e4daeb72/b a.81906f2b98ac/b (glob) (no-windows !)
   [1]
 
 Test --per-file and --confirm options with skipping:
 
   $ hg --config ui.interactive=True falabala -c 6 --per-file --confirm <<EOF
   > s
   > EOF
   diff a (1 of 2) [Yns?] s
   [1]
 
 issue4463: usage of command line configuration without additional quoting
 
   $ cat <<EOF >> $HGRCPATH
   > [extdiff]
   > cmd.4463a = echo
   > opts.4463a = a-naked 'single quoted' "double quoted"
   > 4463b = echo b-naked 'single quoted' "double quoted"
   > echo =
   > EOF
   $ hg update -q -C 0
   $ echo a >> a
 
   $ hg --debug 4463a | grep '^running'
   running 'echo a-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running 'echo a-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
   $ hg --debug 4463b | grep '^running'
   running 'echo b-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running 'echo b-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
   $ hg --debug echo | grep '^running'
   running '*echo* "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running '*echo */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
 
 (getting options from other than extdiff section)
 
   $ cat <<EOF >> $HGRCPATH
   > [extdiff]
   > # using diff-tools diffargs
   > 4463b2 = echo
   > # using merge-tools diffargs
   > 4463b3 = echo
   > # no diffargs
   > 4463b4 = echo
   > [diff-tools]
   > 4463b2.diffargs = b2-naked 'single quoted' "double quoted"
   > [merge-tools]
   > 4463b3.diffargs = b3-naked 'single quoted' "double quoted"
   > EOF
 
   $ hg --debug 4463b2 | grep '^running'
   running 'echo b2-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running 'echo b2-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
   $ hg --debug 4463b3 | grep '^running'
   running 'echo b3-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running 'echo b3-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
   $ hg --debug 4463b4 | grep '^running'
   running 'echo "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running 'echo */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)
   $ hg --debug 4463b4 --option b4-naked --option 'being quoted' | grep '^running'
   running 'echo b4-naked "being quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running "echo b4-naked 'being quoted' */a $TESTTMP/a/a" in */extdiff.* (glob) (no-windows !)
   $ hg --debug extdiff -p echo --option echo-naked --option 'being quoted' | grep '^running'
   running 'echo echo-naked "being quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)
   running "echo echo-naked 'being quoted' */a $TESTTMP/a/a" in */extdiff.* (glob) (no-windows !)
 
   $ touch 'sp ace'
   $ hg add 'sp ace'
   $ hg ci -m 'sp ace'
   created new head
   $ echo > 'sp ace'
 
 Test pre-72a89cf86fcd backward compatibility with half-baked manual quoting
 
   $ cat <<EOF >> $HGRCPATH
   > [extdiff]
   > odd =
   > [merge-tools]
   > odd.diffargs = --foo='\$clabel' '\$clabel' "--bar=\$clabel" "\$clabel"
   > odd.executable = echo
   > EOF
 
   $ hg --debug odd | grep '^running'
   running '"*\\echo.exe" --foo="sp ace" "sp ace" --bar="sp ace" "sp ace"' in * (glob) (windows !)
   running "*/echo --foo='sp ace' 'sp ace' --bar='sp ace' 'sp ace'" in * (glob) (no-windows !)
 
 Empty argument must be quoted
 
   $ cat <<EOF >> $HGRCPATH
   > [extdiff]
   > kdiff3 = echo
   > [merge-tools]
   > kdiff3.diffargs=--L1 \$plabel1 --L2 \$clabel \$parent \$child
   > EOF
 
   $ hg --debug kdiff3 --from 0 | grep '^running'
   running 'echo --L1 "@0" --L2 "" a.8a5febb7f867 a' in * (glob) (windows !)
   running "echo --L1 '@0' --L2 '' a.8a5febb7f867 a" in * (glob) (no-windows !)
 
 
 Test extdiff of multiple files in tmp dir:
 
   $ hg update -C 0 > /dev/null
   $ echo changed > a
   $ echo changed > b
 #if execbit
   $ chmod +x b
 #endif
 
 Diff in working directory, before:
 
   $ hg diff --git
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -a
   +changed
   diff --git a/b b/b
   old mode 100644 (execbit !)
   new mode 100755 (execbit !)
   --- a/b
   +++ b/b
   @@ -1,1 +1,1 @@
   -b
   +changed
 
 
 Edit with extdiff -p:
 
 Prepare custom diff/edit tool:
 
   $ cat > 'diff tool.py' << EOT
   > #!$PYTHON
   > import time
   > time.sleep(1) # avoid unchanged-timestamp problems
   > open('a/a', 'ab').write(b'edited\n')
   > open('a/b', 'ab').write(b'edited\n')
   > EOT
 
 #if execbit
   $ chmod +x 'diff tool.py'
 #endif
 
 will change to /tmp/extdiff.TMP and populate directories a.TMP and a
 and start tool
 
 #if windows
   $ cat > 'diff tool.bat' << EOF
   > @"$PYTHON" "`pwd`/diff tool.py"
   > EOF
   $ hg extdiff -p "`pwd`/diff tool.bat"
   [1]
 #else
   $ hg extdiff -p "`pwd`/diff tool.py"
   [1]
 #endif
 
 Diff in working directory, after:
 
   $ hg diff --git
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,2 @@
   -a
   +changed
   +edited
   diff --git a/b b/b
   old mode 100644 (execbit !)
   new mode 100755 (execbit !)
   --- a/b
   +++ b/b
   @@ -1,1 +1,2 @@
   -b
   +changed
   +edited
 
 Test extdiff with --option:
 
   $ hg extdiff -p echo -o this -c 1
   this "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   this */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
   $ hg falabala -o this -c 1
   diffing this "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   diffing this */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
 Test extdiff's handling of options with spaces in them:
 
   $ hg edspace -c 1
   "name  <[e-mail]>" "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   name  <[e-mail]> */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
   $ hg extdiff -p echo -o "name  <[e-mail]>" -c 1
   "name  <[e-mail]>" "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   name  <[e-mail]> */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
 Test with revsets:
 
   $ hg extdif -p echo -c "rev(1)"
   "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
   $ hg extdif -p echo -r "0::1"
   "*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)
   */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)
   [1]
 
 Fallback to merge-tools.tool.executable|regkey
   $ mkdir dir
   $ cat > 'dir/tool.sh' << 'EOF'
   > #!/bin/sh
   > # Mimic a tool that syncs all attrs, including mtime
   > cp $1/a $2/a
   > touch -r $1/a $2/a
   > chmod +x $2/a
   > echo "** custom diff **"
   > EOF
 #if execbit
   $ chmod +x dir/tool.sh
 #endif
 
 Windows can't run *.sh directly, so create a shim executable that can be.
 Without something executable, the next hg command will try to run `tl` instead
 of $tool (and fail).
 #if windows
   $ cat > dir/tool.bat <<EOF
   > @sh -c "`pwd`/dir/tool.sh %1 %2"
   > EOF
   $ tool=`pwd`/dir/tool.bat
 #else
   $ tool=`pwd`/dir/tool.sh
 #endif
 
   $ cat a
   changed
   edited
   $ hg --debug tl --config extdiff.tl= --config merge-tools.tl.executable=$tool
   making snapshot of 2 files from rev * (glob)
     a
     b
   making snapshot of 2 files from working directory
     a
     b
   running '$TESTTMP/a/dir/tool.bat a.* a' in */extdiff.* (glob) (windows !)
   running '$TESTTMP/a/dir/tool.sh a.* a' in */extdiff.* (glob) (no-windows !)
   ** custom diff **
   file changed while diffing. Overwriting: $TESTTMP/a/a (src: */extdiff.*/a/a) (glob)
   cleaning up temp directory
   [1]
   $ cat a
   a
 
 #if execbit
   $ [ -x a ]
 
   $ cat > 'dir/tool.sh' << 'EOF'
   > #!/bin/sh
   > chmod -x $2/a
   > echo "** custom diff **"
   > EOF
 
   $ hg --debug tl --config extdiff.tl= --config merge-tools.tl.executable=$tool
   making snapshot of 2 files from rev * (glob)
     a
     b
   making snapshot of 2 files from working directory
     a
     b
   running '$TESTTMP/a/dir/tool.sh a.* a' in */extdiff.* (glob)
   ** custom diff **
   file changed while diffing. Overwriting: $TESTTMP/a/a (src: */extdiff.*/a/a) (glob)
   cleaning up temp directory
   [1]
 
   $ [ -x a ]
   [1]
 #endif
 
   $ cd ..
 
 #if symlink
 
 Test symlinks handling (issue1909)
 
   $ hg init testsymlinks
   $ cd testsymlinks
   $ echo a > a
   $ hg ci -Am adda
   adding a
   $ echo a >> a
   $ ln -s missing linka
   $ hg add linka
   $ hg falabala --from 0 --traceback
   diffing testsymlinks.07f494440405 testsymlinks
   [1]
   $ cd ..
 
 #endif
 
 Test handling of non-ASCII paths in generated docstrings (issue5301)
 
   >>> with open("u", "wb") as f:
   ...     n = f.write(b"\xa5\xa5")
   $ U=`cat u`
 
   $ HGPLAIN=1 hg --config hgext.extdiff= --config extdiff.cmd.td=hi help -k xyzzy
   abort: no matches
   (try 'hg help' for a list of topics)
   [10]
 
   $ HGPLAIN=1 hg --config hgext.extdiff= --config extdiff.cmd.td=hi help td > /dev/null
 
   $ LC_MESSAGES=ja_JP.UTF-8 hg --config hgext.extdiff= --config extdiff.cmd.td=$U help -k xyzzy
   abort: no matches
   (try 'hg help' for a list of topics)
   [10]
 
   $ LC_MESSAGES=ja_JP.UTF-8 hg --config hgext.extdiff= --config extdiff.cmd.td=$U help td \
   > | grep "^      '"
         '\xa5\xa5'
 
   $ cd $TESTTMP
 
 Test that diffing a single file works, even if that file is new
 
   $ hg init testsinglefile
   $ cd testsinglefile
   $ echo a > a
   $ hg add a
   $ hg falabala
   diffing nul "*\\a" (glob) (windows !)
   diffing /dev/null */a (glob) (no-windows !)
   [1]
   $ hg ci -qm a
   $ hg falabala -c .
   diffing nul "*\\a" (glob) (windows !)
   diffing /dev/null */a (glob) (no-windows !)
   [1]
   $ echo a >> a
   $ hg falabala
   diffing "*\\a" "*\\a" (glob) (windows !)
   diffing */a */a (glob) (no-windows !)
   [1]
   $ hg ci -qm 2a
   $ hg falabala -c .
   diffing "*\\a" "*\\a" (glob) (windows !)
   diffing */a */a (glob) (no-windows !)
   [1]

tests/test-rebase-parameters.t

@@ -1,531 +1,531 b''
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
   > rebase=
   > 
   > [phases]
   > publish=False
   > 
   > [alias]
   > tglog = log -G --template "{rev}: {node|short} '{desc}' {branches}\n"
   > EOF
 
 
   $ hg init a
   $ cd a
   $ hg unbundle "$TESTDIR/bundles/rebase.hg"
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+2 heads)
   new changesets cd010b8cd998:02de42196ebe (8 drafts)
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg up tip
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ echo I > I
   $ hg ci -AmI
   adding I
 
   $ hg tglog
   @  8: e7ec4e813ba6 'I'
   |
   o  7: 02de42196ebe 'H'
   |
   | o  6: eea13746799a 'G'
   |/|
   o |  5: 24b6387c8c8c 'F'
   | |
   | o  4: 9520eea781bc 'E'
   |/
   | o  3: 32af7686d403 'D'
   | |
   | o  2: 5fddd98957c8 'C'
   | |
   | o  1: 42ccdea3bb16 'B'
   |/
   o  0: cd010b8cd998 'A'
   
   $ cd ..
 
 Version with only two heads (to allow default destination to work)
 
   $ hg clone -q -u . a a2heads -r 3 -r 8
 
 These fail:
 
   $ hg clone -q -u . a a0
   $ cd a0
 
   $ hg rebase -s 8 -d 7
   nothing to rebase
   [1]
 
   $ hg rebase --continue --abort
   abort: cannot specify both --abort and --continue
   [10]
 
   $ hg rebase --continue --collapse
   abort: cannot use collapse with continue or abort
   [10]
 
   $ hg rebase --continue --dest 4
   abort: cannot specify both --continue and --dest
   [10]
 
   $ hg rebase --base 5 --source 4
   abort: cannot specify both --source and --base
   [10]
 
   $ hg rebase --rev 5 --source 4
   abort: cannot specify both --rev and --source
   [10]
   $ hg rebase --base 5 --rev 4
   abort: cannot specify both --rev and --base
   [10]
 
   $ hg rebase --base 6
   abort: branch 'default' has 3 heads - please rebase to an explicit rev
   (run 'hg heads .' to see heads, specify destination with -d)
   [255]
 
   $ hg rebase --rev '1 & !1' --dest 8
   empty "rev" revision set - nothing to rebase
   [1]
 
   $ hg rebase --rev 'wdir()' --dest 6
   abort: cannot rebase the working copy
   [10]
 
   $ hg rebase --source 'wdir()' --dest 6
   abort: cannot rebase the working copy
   [10]
 
   $ hg rebase --source 1 --source 'wdir()' --dest 6
   abort: cannot rebase the working copy
   [10]
 
   $ hg rebase --source '1 & !1' --dest 8
   empty "source" revision set - nothing to rebase
   [1]
 
   $ hg rebase --base '1 & !1' --dest 8
   empty "base" revision set - can't compute rebase set
   [1]
 
   $ hg rebase --dest 8
   nothing to rebase - working directory parent is also destination
   [1]
 
   $ hg rebase -b . --dest 8
   nothing to rebase - e7ec4e813ba6 is both "base" and destination
   [1]
 
   $ hg up -q 7
 
   $ hg rebase --dest 8 --traceback
   nothing to rebase - working directory parent is already an ancestor of destination e7ec4e813ba6
   [1]
 
   $ hg rebase --dest 8 -b.
   nothing to rebase - "base" 02de42196ebe is already an ancestor of destination e7ec4e813ba6
   [1]
 
   $ hg rebase --dest '1 & !1'
   abort: empty revision set
-  [255]
+  [10]
 
 These work:
 
 Rebase with no arguments (from 3 onto 8):
 
   $ cd ..
   $ hg clone -q -u . a2heads a1
   $ cd a1
   $ hg up -q -C 3
 
   $ hg rebase
   rebasing 1:42ccdea3bb16 "B"
   rebasing 2:5fddd98957c8 "C"
   rebasing 3:32af7686d403 "D"
   saved backup bundle to $TESTTMP/a1/.hg/strip-backup/42ccdea3bb16-3cb021d3-rebase.hg
 
   $ hg tglog
   @  6: ed65089c18f8 'D'
   |
   o  5: 7621bf1a2f17 'C'
   |
   o  4: 9430a62369c6 'B'
   |
   o  3: e7ec4e813ba6 'I'
   |
   o  2: 02de42196ebe 'H'
   |
   o  1: 24b6387c8c8c 'F'
   |
   o  0: cd010b8cd998 'A'
   
 Try to rollback after a rebase (fail):
 
   $ hg rollback
   no rollback information available
   [1]
 
   $ cd ..
 
 Rebase with base == '.' => same as no arguments (from 3 onto 8):
 
   $ hg clone -q -u 3 a2heads a2
   $ cd a2
 
   $ hg rebase --base .
   rebasing 1:42ccdea3bb16 "B"
   rebasing 2:5fddd98957c8 "C"
   rebasing 3:32af7686d403 "D"
   saved backup bundle to $TESTTMP/a2/.hg/strip-backup/42ccdea3bb16-3cb021d3-rebase.hg
 
   $ hg tglog
   @  6: ed65089c18f8 'D'
   |
   o  5: 7621bf1a2f17 'C'
   |
   o  4: 9430a62369c6 'B'
   |
   o  3: e7ec4e813ba6 'I'
   |
   o  2: 02de42196ebe 'H'
   |
   o  1: 24b6387c8c8c 'F'
   |
   o  0: cd010b8cd998 'A'
   
   $ cd ..
 
 
 Rebase with dest == branch(.) => same as no arguments (from 3 onto 8):
 
   $ hg clone -q -u 3 a a3
   $ cd a3
 
   $ hg rebase --dest 'branch(.)'
   rebasing 1:42ccdea3bb16 "B"
   rebasing 2:5fddd98957c8 "C"
   rebasing 3:32af7686d403 "D"
   saved backup bundle to $TESTTMP/a3/.hg/strip-backup/42ccdea3bb16-3cb021d3-rebase.hg
 
   $ hg tglog
   @  8: ed65089c18f8 'D'
   |
   o  7: 7621bf1a2f17 'C'
   |
   o  6: 9430a62369c6 'B'
   |
   o  5: e7ec4e813ba6 'I'
   |
   o  4: 02de42196ebe 'H'
   |
   | o  3: eea13746799a 'G'
   |/|
   o |  2: 24b6387c8c8c 'F'
   | |
   | o  1: 9520eea781bc 'E'
   |/
   o  0: cd010b8cd998 'A'
   
   $ cd ..
 
 
 Specify only source (from 2 onto 8):
 
   $ hg clone -q -u . a2heads a4
   $ cd a4
 
   $ hg rebase --source 'desc("C")'
   rebasing 2:5fddd98957c8 "C"
   rebasing 3:32af7686d403 "D"
   saved backup bundle to $TESTTMP/a4/.hg/strip-backup/5fddd98957c8-f9244fa1-rebase.hg
 
   $ hg tglog
   o  6: 7726e9fd58f7 'D'
   |
   o  5: 72c8333623d0 'C'
   |
   @  4: e7ec4e813ba6 'I'
   |
   o  3: 02de42196ebe 'H'
   |
   o  2: 24b6387c8c8c 'F'
   |
   | o  1: 42ccdea3bb16 'B'
   |/
   o  0: cd010b8cd998 'A'
   
   $ cd ..
 
 
 Specify only dest (from 3 onto 6):
 
   $ hg clone -q -u 3 a a5
   $ cd a5
 
   $ hg rebase --dest 6
   rebasing 1:42ccdea3bb16 "B"
   rebasing 2:5fddd98957c8 "C"
   rebasing 3:32af7686d403 "D"
   saved backup bundle to $TESTTMP/a5/.hg/strip-backup/42ccdea3bb16-3cb021d3-rebase.hg
 
   $ hg tglog
   @  8: 8eeb3c33ad33 'D'
   |
   o  7: 2327fea05063 'C'
   |
   o  6: e4e5be0395b2 'B'
   |
   | o  5: e7ec4e813ba6 'I'
   | |
   | o  4: 02de42196ebe 'H'
   | |
   o |  3: eea13746799a 'G'
   |\|
   | o  2: 24b6387c8c8c 'F'
   | |
   o |  1: 9520eea781bc 'E'
   |/
   o  0: cd010b8cd998 'A'
   
   $ cd ..
 
 
 Specify only base (from 1 onto 8):
 
   $ hg clone -q -u . a2heads a6
   $ cd a6
 
   $ hg rebase --base 'desc("D")'
   rebasing 1:42ccdea3bb16 "B"
   rebasing 2:5fddd98957c8 "C"
   rebasing 3:32af7686d403 "D"
   saved backup bundle to $TESTTMP/a6/.hg/strip-backup/42ccdea3bb16-3cb021d3-rebase.hg
 
   $ hg tglog
   o  6: ed65089c18f8 'D'
   |
   o  5: 7621bf1a2f17 'C'
   |
   o  4: 9430a62369c6 'B'
   |
   @  3: e7ec4e813ba6 'I'
   |
   o  2: 02de42196ebe 'H'
   |
   o  1: 24b6387c8c8c 'F'
   |
   o  0: cd010b8cd998 'A'
   
   $ cd ..
 
 
 Specify source and dest (from 2 onto 7):
 
   $ hg clone -q -u . a a7
   $ cd a7
 
   $ hg rebase --source 2 --dest 7
   rebasing 2:5fddd98957c8 "C"
   rebasing 3:32af7686d403 "D"
   saved backup bundle to $TESTTMP/a7/.hg/strip-backup/5fddd98957c8-f9244fa1-rebase.hg
 
   $ hg tglog
   o  8: 668acadedd30 'D'
   |
   o  7: 09eb682ba906 'C'
   |
   | @  6: e7ec4e813ba6 'I'
   |/
   o  5: 02de42196ebe 'H'
   |
   | o  4: eea13746799a 'G'
   |/|
   o |  3: 24b6387c8c8c 'F'
   | |
   | o  2: 9520eea781bc 'E'
   |/
   | o  1: 42ccdea3bb16 'B'
   |/
   o  0: cd010b8cd998 'A'
   
   $ cd ..
 
 
 Specify base and dest (from 1 onto 7):
 
   $ hg clone -q -u . a a8
   $ cd a8
 
   $ hg rebase --base 3 --dest 7
   rebasing 1:42ccdea3bb16 "B"
   rebasing 2:5fddd98957c8 "C"
   rebasing 3:32af7686d403 "D"
   saved backup bundle to $TESTTMP/a8/.hg/strip-backup/42ccdea3bb16-3cb021d3-rebase.hg
 
   $ hg tglog
   o  8: 287cc92ba5a4 'D'
   |
   o  7: 6824f610a250 'C'
   |
   o  6: 7c6027df6a99 'B'
   |
   | @  5: e7ec4e813ba6 'I'
   |/
   o  4: 02de42196ebe 'H'
   |
   | o  3: eea13746799a 'G'
   |/|
   o |  2: 24b6387c8c8c 'F'
   | |
   | o  1: 9520eea781bc 'E'
   |/
   o  0: cd010b8cd998 'A'
   
   $ cd ..
 
 
 Specify only revs (from 2 onto 8)
 
   $ hg clone -q -u . a2heads a9
   $ cd a9
 
   $ hg rebase --rev 'desc("C")::'
   rebasing 2:5fddd98957c8 "C"
   rebasing 3:32af7686d403 "D"
   saved backup bundle to $TESTTMP/a9/.hg/strip-backup/5fddd98957c8-f9244fa1-rebase.hg
 
   $ hg tglog
   o  6: 7726e9fd58f7 'D'
   |
   o  5: 72c8333623d0 'C'
   |
   @  4: e7ec4e813ba6 'I'
   |
   o  3: 02de42196ebe 'H'
   |
   o  2: 24b6387c8c8c 'F'
   |
   | o  1: 42ccdea3bb16 'B'
   |/
   o  0: cd010b8cd998 'A'
   
   $ cd ..
 
 Rebasing both a single revision and a merge in one command
 
   $ hg clone -q -u . a aX
   $ cd aX
   $ hg rebase -r 3 -r 6 --dest 8
   rebasing 3:32af7686d403 "D"
   rebasing 6:eea13746799a "G"
   saved backup bundle to $TESTTMP/aX/.hg/strip-backup/eea13746799a-ad273fd6-rebase.hg
   $ cd ..
 
 Test --tool parameter:
 
   $ hg init b
   $ cd b
 
   $ echo c1 > c1
   $ hg ci -Am c1
   adding c1
 
   $ echo c2 > c2
   $ hg ci -Am c2
   adding c2
 
   $ hg up -q 0
   $ echo c2b > c2
   $ hg ci -Am c2b
   adding c2
   created new head
 
   $ cd ..
 
   $ hg clone -q -u . b b1
   $ cd b1
 
   $ hg rebase -s 2 -d 1 --tool internal:local
   rebasing 2:e4e3f3546619 tip "c2b"
   note: not rebasing 2:e4e3f3546619 tip "c2b", its destination already has all its changes
   saved backup bundle to $TESTTMP/b1/.hg/strip-backup/e4e3f3546619-b0841178-rebase.hg
 
   $ hg cat c2
   c2
 
   $ cd ..
 
 
   $ hg clone -q -u . b b2
   $ cd b2
 
   $ hg rebase -s 2 -d 1 --tool internal:other
   rebasing 2:e4e3f3546619 tip "c2b"
   saved backup bundle to $TESTTMP/b2/.hg/strip-backup/e4e3f3546619-b0841178-rebase.hg
 
   $ hg cat c2
   c2b
 
   $ cd ..
 
 
   $ hg clone -q -u . b b3
   $ cd b3
 
   $ hg rebase -s 2 -d 1 --tool internal:fail
   rebasing 2:e4e3f3546619 tip "c2b"
   unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
   [240]
 
   $ hg summary
   parent: 1:56daeba07f4b 
    c2
   branch: default
   commit: 1 unresolved (clean)
   update: 1 new changesets, 2 branch heads (merge)
   phases: 3 draft
   rebase: 0 rebased, 1 remaining (rebase --continue)
 
   $ hg resolve -l
   U c2
 
   $ hg resolve -m c2
   (no more unresolved files)
   continue: hg rebase --continue
   $ hg graft --continue
   abort: no graft in progress
   (continue: hg rebase --continue)
   [20]
   $ hg rebase -c --tool internal:fail
   rebasing 2:e4e3f3546619 tip "c2b"
   note: not rebasing 2:e4e3f3546619 tip "c2b", its destination already has all its changes
   saved backup bundle to $TESTTMP/b3/.hg/strip-backup/e4e3f3546619-b0841178-rebase.hg
 
   $ hg rebase -i
   abort: interactive history editing is supported by the 'histedit' extension (see "hg --config extensions.histedit= help -e histedit")
   [10]
 
   $ hg rebase --interactive
   abort: interactive history editing is supported by the 'histedit' extension (see "hg --config extensions.histedit= help -e histedit")
   [10]
 
   $ cd ..
 
 No common ancestor
 
   $ hg init separaterepo
   $ cd separaterepo
   $ touch a
   $ hg commit -Aqm a
   $ hg up -q null
   $ touch b
   $ hg commit -Aqm b
   $ hg rebase -d 0
   nothing to rebase from d7486e00c6f1 to 3903775176ed
   [1]
   $ cd ..

tests/test-revset2.t

@@ -1,1852 +1,1852 b''
   $ HGENCODING=utf-8
   $ export HGENCODING
   $ cat >> $HGRCPATH << EOF
   > [extensions]
   > drawdag=$TESTDIR/drawdag.py
   > EOF
 
   $ try() {
   >   hg debugrevspec --debug "$@"
   > }
 
   $ log() {
   >   hg log --template '{rev}\n' -r "$1"
   > }
 
   $ hg init repo
   $ cd repo
 
   $ echo a > a
   $ hg branch a
   marked working directory as branch a
   (branches are permanent and global, did you want a bookmark?)
   $ hg ci -Aqm0
 
   $ echo b > b
   $ hg branch b
   marked working directory as branch b
   $ hg ci -Aqm1
 
   $ rm a
   $ hg branch a-b-c-
   marked working directory as branch a-b-c-
   $ hg ci -Aqm2 -u Bob
 
   $ hg log -r "extra('branch', 'a-b-c-')" --template '{rev}\n'
   2
   $ hg log -r "extra('branch')" --template '{rev}\n'
   0
   1
   2
   $ hg log -r "extra('branch', 're:a')" --template '{rev} {branch}\n'
   0 a
   2 a-b-c-
 
   $ hg co 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch +a+b+c+
   marked working directory as branch +a+b+c+
   $ hg ci -Aqm3
 
   $ hg co 2  # interleave
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo bb > b
   $ hg branch -- -a-b-c-
   marked working directory as branch -a-b-c-
   $ hg ci -Aqm4 -d "May 12 2005"
 
   $ hg co 3
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch !a/b/c/
   marked working directory as branch !a/b/c/
   $ hg ci -Aqm"5 bug"
 
   $ hg merge 4
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg branch _a_b_c_
   marked working directory as branch _a_b_c_
   $ hg ci -Aqm"6 issue619"
 
   $ hg branch .a.b.c.
   marked working directory as branch .a.b.c.
   $ hg ci -Aqm7
 
   $ hg branch all
   marked working directory as branch all
 
   $ hg co 4
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch é
   marked working directory as branch \xc3\xa9 (esc)
   $ hg ci -Aqm9
 
   $ hg tag -r6 1.0
   $ hg bookmark -r6 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 
   $ hg clone --quiet -U -r 7 . ../remote1
   $ hg clone --quiet -U -r 8 . ../remote2
   $ echo "[paths]" >> .hg/hgrc
   $ echo "default = ../remote1" >> .hg/hgrc
 
 test subtracting something from an addset
 
   $ log '(outgoing() or removes(a)) - removes(a)'
   8
   9
 
 test intersecting something with an addset
 
   $ log 'parents(outgoing() or removes(a))'
   1
   4
   8
 
 test that `or` operation combines elements in the right order:
 
   $ log '3:4 or 2:5'
   3
   4
   2
   5
   $ log '3:4 or 5:2'
   3
   4
   5
   2
   $ log 'sort(3:4 or 2:5)'
   2
   3
   4
   5
   $ log 'sort(3:4 or 5:2)'
   2
   3
   4
   5
 
 test that more than one `-r`s are combined in the right order and deduplicated:
 
   $ hg log -T '{rev}\n' -r 3 -r 3 -r 4 -r 5:2 -r 'ancestors(4)'
   3
   4
   5
   2
   0
   1
 
 test that `or` operation skips duplicated revisions from right-hand side
 
   $ try 'reverse(1::5) or ancestors(4)'
   (or
     (list
       (func
         (symbol 'reverse')
         (dagrange
           (symbol '1')
           (symbol '5')))
       (func
         (symbol 'ancestors')
         (symbol '4'))))
   * set:
   <addset
     <baseset- [1, 3, 5]>,
     <generatorsetdesc+>>
   5
   3
   1
   0
   2
   4
   $ try 'sort(ancestors(4) or reverse(1::5))'
   (func
     (symbol 'sort')
     (or
       (list
         (func
           (symbol 'ancestors')
           (symbol '4'))
         (func
           (symbol 'reverse')
           (dagrange
             (symbol '1')
             (symbol '5'))))))
   * set:
   <addset+
     <generatorsetdesc+>,
     <baseset- [1, 3, 5]>>
   0
   1
   2
   3
   4
   5
 
 test optimization of trivial `or` operation
 
   $ try --optimize '0|(1)|"2"|-2|tip|null'
   (or
     (list
       (symbol '0')
       (group
         (symbol '1'))
       (string '2')
       (negate
         (symbol '2'))
       (symbol 'tip')
       (symbol 'null')))
   * optimized:
   (func
     (symbol '_list')
     (string '0\x001\x002\x00-2\x00tip\x00null'))
   * set:
   <baseset [0, 1, 2, 8, 9, -1]>
   0
   1
   2
   8
   9
   -1
 
   $ try --optimize '0|1|2:3'
   (or
     (list
       (symbol '0')
       (symbol '1')
       (range
         (symbol '2')
         (symbol '3'))))
   * optimized:
   (or
     (list
       (func
         (symbol '_list')
         (string '0\x001'))
       (range
         (symbol '2')
         (symbol '3'))))
   * set:
   <addset
     <baseset [0, 1]>,
     <spanset+ 2:4>>
   0
   1
   2
   3
 
   $ try --optimize '0:1|2|3:4|5|6'
   (or
     (list
       (range
         (symbol '0')
         (symbol '1'))
       (symbol '2')
       (range
         (symbol '3')
         (symbol '4'))
       (symbol '5')
       (symbol '6')))
   * optimized:
   (or
     (list
       (range
         (symbol '0')
         (symbol '1'))
       (symbol '2')
       (range
         (symbol '3')
         (symbol '4'))
       (func
         (symbol '_list')
         (string '5\x006'))))
   * set:
   <addset
     <addset
       <spanset+ 0:2>,
       <baseset [2]>>,
     <addset
       <spanset+ 3:5>,
       <baseset [5, 6]>>>
   0
   1
   2
   3
   4
   5
   6
 
 unoptimized `or` looks like this
 
   $ try --no-optimized -p analyzed '0|1|2|3|4'
   * analyzed:
   (or
     (list
       (symbol '0')
       (symbol '1')
       (symbol '2')
       (symbol '3')
       (symbol '4')))
   * set:
   <addset
     <addset
       <baseset [0]>,
       <baseset [1]>>,
     <addset
       <baseset [2]>,
       <addset
         <baseset [3]>,
         <baseset [4]>>>>
   0
   1
   2
   3
   4
 
 test that `_list` should be narrowed by provided `subset`
 
   $ log '0:2 and (null|1|2|3)'
   1
   2
 
 test that `_list` should remove duplicates
 
   $ log '0|1|2|1|2|-1|tip'
   0
   1
   2
   9
 
 test unknown revision in `_list`
 
   $ log '0|unknown'
   abort: unknown revision 'unknown'
   [255]
 
 test integer range in `_list`
 
   $ log '-1|-10'
   9
   0
 
   $ log '-10|-11'
   abort: unknown revision '-11'
   [255]
 
   $ log '9|10'
   abort: unknown revision '10'
   [255]
 
 test '0000' != '0' in `_list`
 
   $ log '0|0000'
   0
   -1
 
 test ',' in `_list`
   $ log '0,1'
   hg: parse error: can't use a list in this context
   (see 'hg help "revsets.x or y"')
   [10]
   $ try '0,1,2'
   (list
     (symbol '0')
     (symbol '1')
     (symbol '2'))
   hg: parse error: can't use a list in this context
   (see 'hg help "revsets.x or y"')
   [10]
 
 test that chained `or` operations make balanced addsets
 
   $ try '0:1|1:2|2:3|3:4|4:5'
   (or
     (list
       (range
         (symbol '0')
         (symbol '1'))
       (range
         (symbol '1')
         (symbol '2'))
       (range
         (symbol '2')
         (symbol '3'))
       (range
         (symbol '3')
         (symbol '4'))
       (range
         (symbol '4')
         (symbol '5'))))
   * set:
   <addset
     <addset
       <spanset+ 0:2>,
       <spanset+ 1:3>>,
     <addset
       <spanset+ 2:4>,
       <addset
         <spanset+ 3:5>,
         <spanset+ 4:6>>>>
   0
   1
   2
   3
   4
   5
 
 no crash by empty group "()" while optimizing `or` operations
 
   $ try --optimize '0|()'
   (or
     (list
       (symbol '0')
       (group
         None)))
   * optimized:
   (or
     (list
       (symbol '0')
       None))
   hg: parse error: missing argument
   [10]
 
 test that chained `or` operations never eat up stack (issue4624)
 (uses `0:1` instead of `0` to avoid future optimization of trivial revisions)
 
   $ hg log -T '{rev}\n' -r `"$PYTHON" -c "print('+'.join(['0:1'] * 500))"`
   0
   1
 
 test that repeated `-r` options never eat up stack (issue4565)
 (uses `-r 0::1` to avoid possible optimization at old-style parser)
 
   $ hg log -T '{rev}\n' `"$PYTHON" -c "for i in range(500): print('-r 0::1 ')"`
   0
   1
 
 check that conversion to only works
   $ try --optimize '::3 - ::1'
   (minus
     (dagrangepre
       (symbol '3'))
     (dagrangepre
       (symbol '1')))
   * optimized:
   (func
     (symbol 'only')
     (list
       (symbol '3')
       (symbol '1')))
   * set:
   <baseset+ [3]>
   3
   $ try --optimize 'ancestors(1) - ancestors(3)'
   (minus
     (func
       (symbol 'ancestors')
       (symbol '1'))
     (func
       (symbol 'ancestors')
       (symbol '3')))
   * optimized:
   (func
     (symbol 'only')
     (list
       (symbol '1')
       (symbol '3')))
   * set:
   <baseset+ []>
   $ try --optimize 'not ::2 and ::6'
   (and
     (not
       (dagrangepre
         (symbol '2')))
     (dagrangepre
       (symbol '6')))
   * optimized:
   (func
     (symbol 'only')
     (list
       (symbol '6')
       (symbol '2')))
   * set:
   <baseset+ [3, 4, 5, 6]>
   3
   4
   5
   6
   $ try --optimize 'ancestors(6) and not ancestors(4)'
   (and
     (func
       (symbol 'ancestors')
       (symbol '6'))
     (not
       (func
         (symbol 'ancestors')
         (symbol '4'))))
   * optimized:
   (func
     (symbol 'only')
     (list
       (symbol '6')
       (symbol '4')))
   * set:
   <baseset+ [3, 5, 6]>
   3
   5
   6
 
 no crash by empty group "()" while optimizing to "only()"
 
   $ try --optimize '::1 and ()'
   (and
     (dagrangepre
       (symbol '1'))
     (group
       None))
   * optimized:
   (andsmally
     (func
       (symbol 'ancestors')
       (symbol '1'))
     None)
   hg: parse error: missing argument
   [10]
 
 optimization to only() works only if ancestors() takes only one argument
 
   $ hg debugrevspec -p optimized 'ancestors(6) - ancestors(4, 1)'
   * optimized:
   (difference
     (func
       (symbol 'ancestors')
       (symbol '6'))
     (func
       (symbol 'ancestors')
       (list
         (symbol '4')
         (symbol '1'))))
   0
   1
   3
   5
   6
   $ hg debugrevspec -p optimized 'ancestors(6, 1) - ancestors(4)'
   * optimized:
   (difference
     (func
       (symbol 'ancestors')
       (list
         (symbol '6')
         (symbol '1')))
     (func
       (symbol 'ancestors')
       (symbol '4')))
   5
   6
 
 optimization disabled if keyword arguments passed (because we're too lazy
 to support it)
 
   $ hg debugrevspec -p optimized 'ancestors(set=6) - ancestors(set=4)'
   * optimized:
   (difference
     (func
       (symbol 'ancestors')
       (keyvalue
         (symbol 'set')
         (symbol '6')))
     (func
       (symbol 'ancestors')
       (keyvalue
         (symbol 'set')
         (symbol '4'))))
   3
   5
   6
 
 invalid function call should not be optimized to only()
 
   $ log '"ancestors"(6) and not ancestors(4)'
   hg: parse error: not a symbol
   [10]
 
   $ log 'ancestors(6) and not "ancestors"(4)'
   hg: parse error: not a symbol
   [10]
 
 test empty string
 
   $ log ''
   hg: parse error: empty query
   [10]
   $ log 'parents("")'
   hg: parse error: empty string is not a valid revision
   [10]
 
 test empty revset
   $ hg log 'none()'
 
 we can use patterns when searching for tags
 
   $ log 'tag("1..*")'
   abort: tag '1..*' does not exist
   [255]
   $ log 'tag("re:1..*")'
   6
   $ log 'tag("re:[0-9].[0-9]")'
   6
   $ log 'tag("literal:1.0")'
   6
   $ log 'tag("re:0..*")'
 
   $ log 'tag(unknown)'
   abort: tag 'unknown' does not exist
   [255]
   $ log 'tag("re:unknown")'
   $ log 'present(tag("unknown"))'
   $ log 'present(tag("re:unknown"))'
   $ log 'branch(unknown)'
   abort: unknown revision 'unknown'
   [255]
   $ log 'branch("literal:unknown")'
   abort: branch 'unknown' does not exist
   [255]
   $ log 'branch("re:unknown")'
   $ log 'present(branch("unknown"))'
   $ log 'present(branch("re:unknown"))'
   $ log 'user(bob)'
   2
 
   $ log '4::8'
   4
   8
   $ log '4:8'
   4
   5
   6
   7
   8
 
   $ log 'sort(!merge() & (modifies(b) | user(bob) | keyword(bug) | keyword(issue) & 1::9), "-date")'
   4
   2
   5
 
   $ log 'not 0 and 0:2'
   1
   2
   $ log 'not 1 and 0:2'
   0
   2
   $ log 'not 2 and 0:2'
   0
   1
   $ log '(1 and 2)::'
   $ log '(1 and 2):'
   $ log '(1 and 2):3'
   $ log 'sort(head(), -rev)'
   9
   7
   6
   5
   4
   3
   2
   1
   0
   $ log '4::8 - 8'
   4
 
 matching() should preserve the order of the input set:
 
   $ log '(2 or 3 or 1) and matching(1 or 2 or 3)'
   2
   3
   1
 
   $ log 'named("unknown")'
   abort: namespace 'unknown' does not exist
   [255]
   $ log 'named("re:unknown")'
   $ log 'present(named("unknown"))'
   $ log 'present(named("re:unknown"))'
 
   $ log 'tag()'
   6
   $ log 'named("tags")'
   6
 
 issue2437
 
   $ log '3 and p1(5)'
   3
   $ log '4 and p2(6)'
   4
   $ log '1 and parents(:2)'
   1
   $ log '2 and children(1:)'
   2
   $ log 'roots(all()) or roots(all())'
   0
   $ hg debugrevspec 'roots(all()) or roots(all())'
   0
   $ log 'heads(branch(é)) or heads(branch(é))'
   9
   $ log 'ancestors(8) and (heads(branch("-a-b-c-")) or heads(branch(é)))'
   4
 
 issue2654: report a parse error if the revset was not completely parsed
 
   $ log '1 OR 2'
   hg: parse error at 2: invalid token
   (1 OR 2
      ^ here)
   [10]
 
 or operator should preserve ordering:
   $ log 'reverse(2::4) or tip'
   4
   2
   9
 
 parentrevspec
 
   $ log 'merge()^0'
   6
   $ log 'merge()^'
   5
   $ log 'merge()^1'
   5
   $ log 'merge()^2'
   4
   $ log '(not merge())^2'
   $ log 'merge()^^'
   3
   $ log 'merge()^1^'
   3
   $ log 'merge()^^^'
   1
 
   $ hg debugrevspec -s '(merge() | 0)~-1'
   * set:
   <baseset+ [1, 7]>
   1
   7
   $ log 'merge()~-1'
   7
   $ log 'tip~-1'
   $ log '(tip | merge())~-1'
   7
   $ log 'merge()~0'
   6
   $ log 'merge()~1'
   5
   $ log 'merge()~2'
   3
   $ log 'merge()~2^1'
   1
   $ log 'merge()~3'
   1
 
   $ log '(-3:tip)^'
   4
   6
   8
 
   $ log 'tip^foo'
   hg: parse error: ^ expects a number 0, 1, or 2
   [10]
 
   $ log 'branchpoint()~-1'
   abort: revision in set has more than one child
   [255]
 
 Bogus function gets suggestions
   $ log 'add()'
   hg: parse error: unknown identifier: add
   (did you mean adds?)
   [10]
   $ log 'added()'
   hg: parse error: unknown identifier: added
   (did you mean adds?)
   [10]
   $ log 'remo()'
   hg: parse error: unknown identifier: remo
   (did you mean one of remote, removes?)
   [10]
   $ log 'babar()'
   hg: parse error: unknown identifier: babar
   [10]
 
 Bogus function with a similar internal name doesn't suggest the internal name
   $ log 'matches()'
   hg: parse error: unknown identifier: matches
   (did you mean matching?)
   [10]
 
 Undocumented functions aren't suggested as similar either
   $ log 'tagged2()'
   hg: parse error: unknown identifier: tagged2
   [10]
 
 multiple revspecs
 
   $ hg log -r 'tip~1:tip' -r 'tip~2:tip~1' --template '{rev}\n'
   8
   9
   4
   5
   6
   7
 
 test usage in revpair (with "+")
 
 (real pair)
 
   $ hg diff -r 'tip^^' -r 'tip'
   diff -r 2326846efdab -r d2e607fcf9e4 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +d5e6808a86077d6f5c1ff626d4352d01da7d2a1f 1.0
   $ hg diff -r 'tip^^::tip'
   diff -r 2326846efdab -r d2e607fcf9e4 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +d5e6808a86077d6f5c1ff626d4352d01da7d2a1f 1.0
 
 (single rev)
 
   $ hg diff -r 'tip^' -r 'tip^'
   $ hg diff -r 'tip^:tip^'
 
 (single rev that does not looks like a range)
 
   $ hg diff -r 'tip^::tip^ or tip^'
   diff -r d5d0dcbdc4d9 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	* (glob)
   @@ -0,0 +1,1 @@
   +d5e6808a86077d6f5c1ff626d4352d01da7d2a1f 1.0
   $ hg diff -r 'tip^ or tip^'
   diff -r d5d0dcbdc4d9 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	* (glob)
   @@ -0,0 +1,1 @@
   +d5e6808a86077d6f5c1ff626d4352d01da7d2a1f 1.0
 
 (no rev)
 
   $ hg diff -r 'author("babar") or author("celeste")'
   abort: empty revision range
-  [255]
+  [10]
 
 aliases:
 
   $ echo '[revsetalias]' >> .hg/hgrc
   $ echo 'm = merge()' >> .hg/hgrc
 (revset aliases can override builtin revsets)
   $ echo 'p2($1) = p1($1)' >> .hg/hgrc
   $ echo 'sincem = descendants(m)' >> .hg/hgrc
   $ echo 'd($1) = reverse(sort($1, date))' >> .hg/hgrc
   $ echo 'rs(ARG1, ARG2) = reverse(sort(ARG1, ARG2))' >> .hg/hgrc
   $ echo 'rs4(ARG1, ARGA, ARGB, ARG2) = reverse(sort(ARG1, ARG2))' >> .hg/hgrc
 
   $ try m
   (symbol 'm')
   * expanded:
   (func
     (symbol 'merge')
     None)
   * set:
   <filteredset
     <fullreposet+ 0:10>,
     <merge>>
   6
 
   $ HGPLAIN=1
   $ export HGPLAIN
   $ try m
   (symbol 'm')
   abort: unknown revision 'm'
   [255]
 
   $ HGPLAINEXCEPT=revsetalias
   $ export HGPLAINEXCEPT
   $ try m
   (symbol 'm')
   * expanded:
   (func
     (symbol 'merge')
     None)
   * set:
   <filteredset
     <fullreposet+ 0:10>,
     <merge>>
   6
 
   $ unset HGPLAIN
   $ unset HGPLAINEXCEPT
 
   $ try 'p2(.)'
   (func
     (symbol 'p2')
     (symbol '.'))
   * expanded:
   (func
     (symbol 'p1')
     (symbol '.'))
   * set:
   <baseset+ [8]>
   8
 
   $ HGPLAIN=1
   $ export HGPLAIN
   $ try 'p2(.)'
   (func
     (symbol 'p2')
     (symbol '.'))
   * set:
   <baseset+ []>
 
   $ HGPLAINEXCEPT=revsetalias
   $ export HGPLAINEXCEPT
   $ try 'p2(.)'
   (func
     (symbol 'p2')
     (symbol '.'))
   * expanded:
   (func
     (symbol 'p1')
     (symbol '.'))
   * set:
   <baseset+ [8]>
   8
 
   $ unset HGPLAIN
   $ unset HGPLAINEXCEPT
 
 test alias recursion
 
   $ try sincem
   (symbol 'sincem')
   * expanded:
   (func
     (symbol 'descendants')
     (func
       (symbol 'merge')
       None))
   * set:
   <generatorsetasc+>
   6
   7
 
 test infinite recursion
 
   $ echo 'recurse1 = recurse2' >> .hg/hgrc
   $ echo 'recurse2 = recurse1' >> .hg/hgrc
   $ try recurse1
   (symbol 'recurse1')
   hg: parse error: infinite expansion of revset alias "recurse1" detected
   [10]
 
   $ echo 'level1($1, $2) = $1 or $2' >> .hg/hgrc
   $ echo 'level2($1, $2) = level1($2, $1)' >> .hg/hgrc
   $ try "level2(level1(1, 2), 3)"
   (func
     (symbol 'level2')
     (list
       (func
         (symbol 'level1')
         (list
           (symbol '1')
           (symbol '2')))
       (symbol '3')))
   * expanded:
   (or
     (list
       (symbol '3')
       (or
         (list
           (symbol '1')
           (symbol '2')))))
   * set:
   <addset
     <baseset [3]>,
     <baseset [1, 2]>>
   3
   1
   2
 
 test nesting and variable passing
 
   $ echo 'nested($1) = nested2($1)' >> .hg/hgrc
   $ echo 'nested2($1) = nested3($1)' >> .hg/hgrc
   $ echo 'nested3($1) = max($1)' >> .hg/hgrc
   $ try 'nested(2:5)'
   (func
     (symbol 'nested')
     (range
       (symbol '2')
       (symbol '5')))
   * expanded:
   (func
     (symbol 'max')
     (range
       (symbol '2')
       (symbol '5')))
   * set:
   <baseset
     <max
       <fullreposet+ 0:10>,
       <spanset+ 2:6>>>
   5
 
 test chained `or` operations are flattened at parsing phase
 
   $ echo 'chainedorops($1, $2, $3) = $1|$2|$3' >> .hg/hgrc
   $ try 'chainedorops(0:1, 1:2, 2:3)'
   (func
     (symbol 'chainedorops')
     (list
       (range
         (symbol '0')
         (symbol '1'))
       (range
         (symbol '1')
         (symbol '2'))
       (range
         (symbol '2')
         (symbol '3'))))
   * expanded:
   (or
     (list
       (range
         (symbol '0')
         (symbol '1'))
       (range
         (symbol '1')
         (symbol '2'))
       (range
         (symbol '2')
         (symbol '3'))))
   * set:
   <addset
     <spanset+ 0:2>,
     <addset
       <spanset+ 1:3>,
       <spanset+ 2:4>>>
   0
   1
   2
   3
 
 test variable isolation, variable placeholders are rewritten as string
 then parsed and matched again as string. Check they do not leak too
 far away.
 
   $ echo 'injectparamasstring = max("$1")' >> .hg/hgrc
   $ echo 'callinjection($1) = descendants(injectparamasstring)' >> .hg/hgrc
   $ try 'callinjection(2:5)'
   (func
     (symbol 'callinjection')
     (range
       (symbol '2')
       (symbol '5')))
   * expanded:
   (func
     (symbol 'descendants')
     (func
       (symbol 'max')
       (string '$1')))
   abort: unknown revision '$1'
   [255]
 
 test scope of alias expansion: 'universe' is expanded prior to 'shadowall(0)',
 but 'all()' should never be substituted to '0()'.
 
   $ echo 'universe = all()' >> .hg/hgrc
   $ echo 'shadowall(all) = all and universe' >> .hg/hgrc
   $ try 'shadowall(0)'
   (func
     (symbol 'shadowall')
     (symbol '0'))
   * expanded:
   (and
     (symbol '0')
     (func
       (symbol 'all')
       None))
   * set:
   <filteredset
     <baseset [0]>,
     <spanset+ 0:10>>
   0
 
 test unknown reference:
 
   $ try "unknownref(0)" --config 'revsetalias.unknownref($1)=$1:$2'
   (func
     (symbol 'unknownref')
     (symbol '0'))
   abort: bad definition of revset alias "unknownref": invalid symbol '$2'
   [255]
 
   $ hg debugrevspec --debug --config revsetalias.anotherbadone='branch(' "tip"
   (symbol 'tip')
   warning: bad definition of revset alias "anotherbadone": at 7: not a prefix: end
   * set:
   <baseset [9]>
   9
 
   $ try 'tip'
   (symbol 'tip')
   * set:
   <baseset [9]>
   9
 
   $ hg debugrevspec --debug --config revsetalias.'bad name'='tip' "tip"
   (symbol 'tip')
   warning: bad declaration of revset alias "bad name": at 4: invalid token
   * set:
   <baseset [9]>
   9
   $ echo 'strictreplacing($1, $10) = $10 or desc("$1")' >> .hg/hgrc
   $ try 'strictreplacing("foo", tip)'
   (func
     (symbol 'strictreplacing')
     (list
       (string 'foo')
       (symbol 'tip')))
   * expanded:
   (or
     (list
       (symbol 'tip')
       (func
         (symbol 'desc')
         (string '$1'))))
   * set:
   <addset
     <baseset [9]>,
     <filteredset
       <fullreposet+ 0:10>,
       <desc '$1'>>>
   9
 
   $ try 'd(2:5)'
   (func
     (symbol 'd')
     (range
       (symbol '2')
       (symbol '5')))
   * expanded:
   (func
     (symbol 'reverse')
     (func
       (symbol 'sort')
       (list
         (range
           (symbol '2')
           (symbol '5'))
         (symbol 'date'))))
   * set:
   <baseset [4, 5, 3, 2]>
   4
   5
   3
   2
   $ try 'rs(2 or 3, date)'
   (func
     (symbol 'rs')
     (list
       (or
         (list
           (symbol '2')
           (symbol '3')))
       (symbol 'date')))
   * expanded:
   (func
     (symbol 'reverse')
     (func
       (symbol 'sort')
       (list
         (or
           (list
             (symbol '2')
             (symbol '3')))
         (symbol 'date'))))
   * set:
   <baseset [3, 2]>
   3
   2
   $ try 'rs()'
   (func
     (symbol 'rs')
     None)
   hg: parse error: invalid number of arguments: 0
   [10]
   $ try 'rs(2)'
   (func
     (symbol 'rs')
     (symbol '2'))
   hg: parse error: invalid number of arguments: 1
   [10]
   $ try 'rs(2, data, 7)'
   (func
     (symbol 'rs')
     (list
       (symbol '2')
       (symbol 'data')
       (symbol '7')))
   hg: parse error: invalid number of arguments: 3
   [10]
   $ try 'rs4(2 or 3, x, x, date)'
   (func
     (symbol 'rs4')
     (list
       (or
         (list
           (symbol '2')
           (symbol '3')))
       (symbol 'x')
       (symbol 'x')
       (symbol 'date')))
   * expanded:
   (func
     (symbol 'reverse')
     (func
       (symbol 'sort')
       (list
         (or
           (list
             (symbol '2')
             (symbol '3')))
         (symbol 'date'))))
   * set:
   <baseset [3, 2]>
   3
   2
 
 issue4553: check that revset aliases override existing hash prefix
 
   $ hg log -qr d5e
   6:d5e6808a8607
 
   $ hg log -qr d5e --config revsetalias.d5e="all()"
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
   6:d5e6808a8607
   7:586353d483b3
   8:d5d0dcbdc4d9
   9:d2e607fcf9e4
 
   $ hg log -qr d5e: --config revsetalias.d5e="0"
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
   6:d5e6808a8607
   7:586353d483b3
   8:d5d0dcbdc4d9
   9:d2e607fcf9e4
 
   $ hg log -qr :d5e --config revsetalias.d5e="9"
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
   6:d5e6808a8607
   7:586353d483b3
   8:d5d0dcbdc4d9
   9:d2e607fcf9e4
 
   $ hg log -qr d5e:
   6:d5e6808a8607
   7:586353d483b3
   8:d5d0dcbdc4d9
   9:d2e607fcf9e4
 
   $ hg log -qr :d5e
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
   6:d5e6808a8607
 
 issue2549 - correct optimizations
 
   $ try 'limit(1 or 2 or 3, 2) and not 2'
   (and
     (func
       (symbol 'limit')
       (list
         (or
           (list
             (symbol '1')
             (symbol '2')
             (symbol '3')))
         (symbol '2')))
     (not
       (symbol '2')))
   * set:
   <filteredset
     <baseset [1, 2]>,
     <not
       <baseset [2]>>>
   1
   $ try 'max(1 or 2) and not 2'
   (and
     (func
       (symbol 'max')
       (or
         (list
           (symbol '1')
           (symbol '2'))))
     (not
       (symbol '2')))
   * set:
   <filteredset
     <baseset
       <max
         <fullreposet+ 0:10>,
         <baseset [1, 2]>>>,
     <not
       <baseset [2]>>>
   $ try 'min(1 or 2) and not 1'
   (and
     (func
       (symbol 'min')
       (or
         (list
           (symbol '1')
           (symbol '2'))))
     (not
       (symbol '1')))
   * set:
   <filteredset
     <baseset
       <min
         <fullreposet+ 0:10>,
         <baseset [1, 2]>>>,
     <not
       <baseset [1]>>>
   $ try 'last(1 or 2, 1) and not 2'
   (and
     (func
       (symbol 'last')
       (list
         (or
           (list
             (symbol '1')
             (symbol '2')))
         (symbol '1')))
     (not
       (symbol '2')))
   * set:
   <filteredset
     <baseset [2]>,
     <not
       <baseset [2]>>>
 
 issue4289 - ordering of built-ins
   $ hg log -M -q -r 3:2
   3:8528aa5637f2
   2:5ed5505e9f1c
 
 test revsets started with 40-chars hash (issue3669)
 
   $ ISSUE3669_TIP=`hg tip --template '{node}'`
   $ hg log -r "${ISSUE3669_TIP}" --template '{rev}\n'
   9
   $ hg log -r "${ISSUE3669_TIP}^" --template '{rev}\n'
   8
 
 test or-ed indirect predicates (issue3775)
 
   $ log '6 or 6^1' | sort
   5
   6
   $ log '6^1 or 6' | sort
   5
   6
   $ log '4 or 4~1' | sort
   2
   4
   $ log '4~1 or 4' | sort
   2
   4
   $ log '(0 or 2):(4 or 6) or 0 or 6' | sort
   0
   1
   2
   3
   4
   5
   6
   $ log '0 or 6 or (0 or 2):(4 or 6)' | sort
   0
   1
   2
   3
   4
   5
   6
 
 tests for 'remote()' predicate:
 #.  (csets in remote) (id)            (remote)
 1.  less than local   current branch  "default"
 2.  same with local   specified       "default"
 3.  more than local   specified       specified
 
   $ hg clone --quiet -U . ../remote3
   $ cd ../remote3
   $ hg update -q 7
   $ echo r > r
   $ hg ci -Aqm 10
   $ log 'remote()'
   7
   $ log 'remote("a-b-c-")'
   2
   $ cd ../repo
   $ log 'remote(".a.b.c.", "../remote3")'
 
 tests for concatenation of strings/symbols by "##"
 
   $ try "278 ## '5f5' ## 1ee ## 'ce5'"
   (_concat
     (_concat
       (_concat
         (symbol '278')
         (string '5f5'))
       (symbol '1ee'))
     (string 'ce5'))
   * concatenated:
   (string '2785f51eece5')
   * set:
   <baseset [0]>
   0
 
   $ echo 'cat4($1, $2, $3, $4) = $1 ## $2 ## $3 ## $4' >> .hg/hgrc
   $ try "cat4(278, '5f5', 1ee, 'ce5')"
   (func
     (symbol 'cat4')
     (list
       (symbol '278')
       (string '5f5')
       (symbol '1ee')
       (string 'ce5')))
   * expanded:
   (_concat
     (_concat
       (_concat
         (symbol '278')
         (string '5f5'))
       (symbol '1ee'))
     (string 'ce5'))
   * concatenated:
   (string '2785f51eece5')
   * set:
   <baseset [0]>
   0
 
 (check concatenation in alias nesting)
 
   $ echo 'cat2($1, $2) = $1 ## $2' >> .hg/hgrc
   $ echo 'cat2x2($1, $2, $3, $4) = cat2($1 ## $2, $3 ## $4)' >> .hg/hgrc
   $ log "cat2x2(278, '5f5', 1ee, 'ce5')"
   0
 
 (check operator priority)
 
   $ echo 'cat2n2($1, $2, $3, $4) = $1 ## $2 or $3 ## $4~2' >> .hg/hgrc
   $ log "cat2n2(2785f5, 1eece5, d2e607, fcf9e4)"
   0
   4
 
   $ cd ..
 
 prepare repository that has "default" branches of multiple roots
 
   $ hg init namedbranch
   $ cd namedbranch
 
   $ echo default0 >> a
   $ hg ci -Aqm0
   $ echo default1 >> a
   $ hg ci -m1
 
   $ hg branch -q stable
   $ echo stable2 >> a
   $ hg ci -m2
   $ echo stable3 >> a
   $ hg ci -m3
 
   $ hg update -q null
   $ echo default4 >> a
   $ hg ci -Aqm4
   $ echo default5 >> a
   $ hg ci -m5
 
 "null" revision belongs to "default" branch (issue4683)
 
   $ log 'branch(null)'
   0
   1
   4
   5
 
 "null" revision belongs to "default" branch, but it shouldn't appear in set
 unless explicitly specified (issue4682)
 
   $ log 'children(branch(default))'
   1
   2
   5
 
   $ cd ..
 
 test author/desc/keyword in problematic encoding
 # unicode: cp932:
 # u30A2    0x83 0x41(= 'A')
 # u30C2    0x83 0x61(= 'a')
 
   $ hg init problematicencoding
   $ cd problematicencoding
 
   $ "$PYTHON" <<EOF
   > open('setup.sh', 'wb').write(u'''
   > echo a > text
   > hg add text
   > hg --encoding utf-8 commit -u '\u30A2' -m none
   > echo b > text
   > hg --encoding utf-8 commit -u '\u30C2' -m none
   > echo c > text
   > hg --encoding utf-8 commit -u none -m '\u30A2'
   > echo d > text
   > hg --encoding utf-8 commit -u none -m '\u30C2'
   > '''.encode('utf-8'))
   > EOF
   $ sh < setup.sh
 
 test in problematic encoding
   $ "$PYTHON" <<EOF
   > open('test.sh', 'wb').write(u'''
   > hg --encoding cp932 log --template '{rev}\\n' -r 'author(\u30A2)'
   > echo ====
   > hg --encoding cp932 log --template '{rev}\\n' -r 'author(\u30C2)'
   > echo ====
   > hg --encoding cp932 log --template '{rev}\\n' -r 'desc(\u30A2)'
   > echo ====
   > hg --encoding cp932 log --template '{rev}\\n' -r 'desc(\u30C2)'
   > echo ====
   > hg --encoding cp932 log --template '{rev}\\n' -r 'keyword(\u30A2)'
   > echo ====
   > hg --encoding cp932 log --template '{rev}\\n' -r 'keyword(\u30C2)'
   > '''.encode('cp932'))
   > EOF
   $ sh < test.sh
   0
   ====
   1
   ====
   2
   ====
   3
   ====
   0
   2
   ====
   1
   3
 
 test error message of bad revset
   $ hg log -r 'foo\\'
   hg: parse error at 3: syntax error in revset 'foo\\'
   (foo\\
       ^ here)
   [10]
 
   $ cd ..
 
 Test that revset predicate of extension isn't loaded at failure of
 loading it
 
   $ cd repo
 
   $ cat <<EOF > $TESTTMP/custompredicate.py
   > from mercurial import error, registrar, revset
   > 
   > revsetpredicate = registrar.revsetpredicate()
   > 
   > @revsetpredicate(b'custom1()')
   > def custom1(repo, subset, x):
   >     return revset.baseset([1])
   > 
   > raise error.Abort(b'intentional failure of loading extension')
   > EOF
   $ cat <<EOF > .hg/hgrc
   > [extensions]
   > custompredicate = $TESTTMP/custompredicate.py
   > EOF
 
   $ hg debugrevspec "custom1()"
   *** failed to import extension custompredicate from $TESTTMP/custompredicate.py: intentional failure of loading extension
   hg: parse error: unknown identifier: custom1
   [10]
 
 Test repo.anyrevs with customized revset overrides
 
   $ cat > $TESTTMP/printprevset.py <<EOF
   > from mercurial import encoding, registrar
   > cmdtable = {}
   > command = registrar.command(cmdtable)
   > @command(b'printprevset')
   > def printprevset(ui, repo):
   >     alias = {}
   >     p = encoding.environ.get(b'P')
   >     if p:
   >         alias[b'P'] = p
   >     revs = repo.anyrevs([b'P'], user=True, localalias=alias)
   >     ui.write(b'P=%r\n' % list(revs))
   > EOF
 
   $ cat >> .hg/hgrc <<EOF
   > custompredicate = !
   > printprevset = $TESTTMP/printprevset.py
   > EOF
 
   $ unset P
   $ hg --config revsetalias.P=1 printprevset
   P=[1]
   $ P=3 hg --config revsetalias.P=2 printprevset
   P=[3]
 
   $ cd ..
 
 Test obsstore related revsets
 
   $ hg init repo1
   $ cd repo1
   $ cat <<EOF >> .hg/hgrc
   > [experimental]
   > evolution.createmarkers=True
   > EOF
 
   $ hg debugdrawdag <<'EOS'
   >        F G
   >        |/    # split: B -> E, F
   > B C D  E     # amend: B -> C -> D
   >  \|/   |     # amend: F -> G
   >   A    A  Z  # amend: A -> Z
   > EOS
   3 new orphan changesets
   3 new content-divergent changesets
 
   $ hg log -r 'successors(Z)' -T '{desc}\n'
   Z
 
   $ hg log -r 'successors(F)' -T '{desc}\n'
   F
   G
 
   $ hg tag --remove --local C D E F G
 
   $ hg log -r 'successors(B)' -T '{desc}\n'
   B
   D
   E
   G
 
   $ hg log -r 'successors(B)' -T '{desc}\n' --hidden
   B
   C
   D
   E
   F
   G
 
   $ hg log -r 'successors(B)-obsolete()' -T '{desc}\n' --hidden
   D
   E
   G
 
   $ hg log -r 'successors(B+A)-contentdivergent()' -T '{desc}\n'
   A
   Z
   B
 
   $ hg log -r 'successors(B+A)-contentdivergent()-obsolete()' -T '{desc}\n'
   Z
 
 Test `draft() & ::x` optimization
 
   $ hg init $TESTTMP/repo2
   $ cd $TESTTMP/repo2
   $ hg debugdrawdag <<'EOS'
   >   P5 S1
   >    |  |
   > S2 | D3
   >   \|/
   >   P4
   >    |
   >   P3 D2
   >    |  |
   >   P2 D1
   >    |/
   >   P1
   >    |
   >   P0
   > EOS
   $ hg phase --public -r P5
   $ hg phase --force --secret -r S1+S2
   $ hg log -G -T '{rev} {desc} {phase}' -r 'sort(all(), topo, topo.firstbranch=P5)'
   o  8 P5 public
   |
   | o  10 S1 secret
   | |
   | o  7 D3 draft
   |/
   | o  9 S2 secret
   |/
   o  6 P4 public
   |
   o  5 P3 public
   |
   o  3 P2 public
   |
   | o  4 D2 draft
   | |
   | o  2 D1 draft
   |/
   o  1 P1 public
   |
   o  0 P0 public
   
   $ hg debugrevspec --verify -p analyzed -p optimized 'draft() & ::(((S1+D1+P5)-D3)+S2)'
   * analyzed:
   (and
     (func
       (symbol 'draft')
       None)
     (func
       (symbol 'ancestors')
       (or
         (list
           (and
             (or
               (list
                 (symbol 'S1')
                 (symbol 'D1')
                 (symbol 'P5')))
             (not
               (symbol 'D3')))
           (symbol 'S2')))))
   * optimized:
   (func
     (symbol '_phaseandancestors')
     (list
       (symbol 'draft')
       (or
         (list
           (difference
             (func
               (symbol '_list')
               (string 'S1\x00D1\x00P5'))
             (symbol 'D3'))
           (symbol 'S2')))))
   $ hg debugrevspec --verify -p analyzed -p optimized 'secret() & ::9'
   * analyzed:
   (and
     (func
       (symbol 'secret')
       None)
     (func
       (symbol 'ancestors')
       (symbol '9')))
   * optimized:
   (func
     (symbol '_phaseandancestors')
     (list
       (symbol 'secret')
       (symbol '9')))
   $ hg debugrevspec --verify -p analyzed -p optimized '7 & ( (not public()) & ::(tag()) )'
   * analyzed:
   (and
     (symbol '7')
     (and
       (not
         (func
           (symbol 'public')
           None))
       (func
         (symbol 'ancestors')
         (func
           (symbol 'tag')
           None))))
   * optimized:
   (and
     (symbol '7')
     (func
       (symbol '_phaseandancestors')
       (list
         (symbol '_notpublic')
         (func
           (symbol 'tag')
           None))))
   $ hg debugrevspec --verify -p optimized '(not public()) & ancestors(S1+D2+P5, 1)'
   * optimized:
   (and
     (func
       (symbol '_notpublic')
       None)
     (func
       (symbol 'ancestors')
       (list
         (func
           (symbol '_list')
           (string 'S1\x00D2\x00P5'))
         (symbol '1'))))
   $ hg debugrevspec --verify -p optimized '(not public()) & ancestors(S1+D2+P5, depth=1)'
   * optimized:
   (and
     (func
       (symbol '_notpublic')
       None)
     (func
       (symbol 'ancestors')
       (list
         (func
           (symbol '_list')
           (string 'S1\x00D2\x00P5'))
         (keyvalue
           (symbol 'depth')
           (symbol '1')))))
 
 test commonancestors and its optimization
 
   $ hg debugrevspec --verify -p analyzed -p optimized 'heads(commonancestors(head()))'
   * analyzed:
   (func
     (symbol 'heads')
     (func
       (symbol 'commonancestors')
       (func
         (symbol 'head')
         None)))
   * optimized:
   (func
     (symbol '_commonancestorheads')
     (func
       (symbol 'head')
       None))