debug-delta-chain: print less data by default

This is faster and simpler to read.

mercurial/debugcommands.py

@@ -1,4751 +1,4751 b''
 # debugcommands.py - command processing for debug* commands
 #
 # Copyright 2005-2016 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.
 
 
 import binascii
 import codecs
 import collections
 import contextlib
 import difflib
 import errno
 import glob
 import operator
 import os
 import platform
 import random
 import re
 import socket
 import ssl
 import stat
 import subprocess
 import sys
 import time
 
 from .i18n import _
 from .node import (
     bin,
     hex,
     nullrev,
     short,
 )
 from .pycompat import (
     open,
 )
 from . import (
     bundle2,
     bundlerepo,
     changegroup,
     cmdutil,
     color,
     context,
     copies,
     dagparser,
     dirstateutils,
     encoding,
     error,
     exchange,
     extensions,
     filelog,
     filemerge,
     filesetlang,
     formatter,
     hg,
     httppeer,
     localrepo,
     lock as lockmod,
     logcmdutil,
     manifest,
     mergestate as mergestatemod,
     metadata,
     obsolete,
     obsutil,
     pathutil,
     phases,
     policy,
     pvec,
     pycompat,
     registrar,
     repair,
     repoview,
     requirements,
     revlog,
     revset,
     revsetlang,
     scmutil,
     setdiscovery,
     simplemerge,
     sshpeer,
     sslutil,
     streamclone,
     strip,
     tags as tagsmod,
     templater,
     treediscovery,
     upgrade,
     url as urlmod,
     util,
     verify,
     vfs as vfsmod,
     wireprotoframing,
     wireprotoserver,
 )
 from .interfaces import repository
 from .stabletailgraph import stabletailsort
 from .utils import (
     cborutil,
     compression,
     dateutil,
     procutil,
     stringutil,
     urlutil,
 )
 
 from .revlogutils import (
     debug as revlog_debug,
     nodemap,
     rewrite,
     sidedata,
 )
 
 release = lockmod.release
 
 table = {}
 table.update(strip.command._table)
 command = registrar.command(table)
 
 
 @command(b'debugancestor', [], _(b'[INDEX] REV1 REV2'), optionalrepo=True)
 def debugancestor(ui, repo, *args):
     """find the ancestor revision of two revisions in a given index"""
     if len(args) == 3:
         index, rev1, rev2 = args
         r = revlog.revlog(vfsmod.vfs(encoding.getcwd(), audit=False), index)
         lookup = r.lookup
     elif len(args) == 2:
         if not repo:
             raise error.Abort(
                 _(b'there is no Mercurial repository here (.hg not found)')
             )
         rev1, rev2 = args
         r = repo.changelog
         lookup = repo.lookup
     else:
         raise error.Abort(_(b'either two or three arguments required'))
     a = r.ancestor(lookup(rev1), lookup(rev2))
     ui.write(b'%d:%s\n' % (r.rev(a), hex(a)))
 
 
 @command(b'debugantivirusrunning', [])
 def debugantivirusrunning(ui, repo):
     """attempt to trigger an antivirus scanner to see if one is active"""
     with repo.cachevfs.open('eicar-test-file.com', b'wb') as f:
         f.write(
             util.b85decode(
                 # This is a base85-armored version of the EICAR test file. See
                 # https://en.wikipedia.org/wiki/EICAR_test_file for details.
                 b'ST#=}P$fV?P+K%yP+C|uG$>GBDK|qyDK~v2MM*<JQY}+dK~6+LQba95P'
                 b'E<)&Nm5l)EmTEQR4qnHOhq9iNGnJx'
             )
         )
     # Give an AV engine time to scan the file.
     time.sleep(2)
     util.unlink(repo.cachevfs.join('eicar-test-file.com'))
 
 
 @command(b'debugapplystreamclonebundle', [], b'FILE')
 def debugapplystreamclonebundle(ui, repo, fname):
     """apply a stream clone bundle file"""
     f = hg.openpath(ui, fname)
     gen = exchange.readbundle(ui, f, fname)
     gen.apply(repo)
 
 
 @command(
     b'debugbuilddag',
     [
         (
             b'm',
             b'mergeable-file',
             None,
             _(b'add single file mergeable changes'),
         ),
         (
             b'o',
             b'overwritten-file',
             None,
             _(b'add single file all revs overwrite'),
         ),
         (b'n', b'new-file', None, _(b'add new file at each rev')),
         (
             b'',
             b'from-existing',
             None,
             _(b'continue from a non-empty repository'),
         ),
     ],
     _(b'[OPTION]... [TEXT]'),
 )
 def debugbuilddag(
     ui,
     repo,
     text=None,
     mergeable_file=False,
     overwritten_file=False,
     new_file=False,
     from_existing=False,
 ):
     """builds a repo with a given DAG from scratch in the current empty repo
 
     The description of the DAG is read from stdin if not given on the
     command line.
 
     Elements:
 
      - "+n" is a linear run of n nodes based on the current default parent
      - "." is a single node based on the current default parent
      - "$" resets the default parent to null (implied at the start);
            otherwise the default parent is always the last node created
      - "<p" sets the default parent to the backref p
      - "*p" is a fork at parent p, which is a backref
      - "*p1/p2" is a merge of parents p1 and p2, which are backrefs
      - "/p2" is a merge of the preceding node and p2
      - ":tag" defines a local tag for the preceding node
      - "@branch" sets the named branch for subsequent nodes
      - "#...\\n" is a comment up to the end of the line
 
     Whitespace between the above elements is ignored.
 
     A backref is either
 
      - a number n, which references the node curr-n, where curr is the current
        node, or
      - the name of a local tag you placed earlier using ":tag", or
      - empty to denote the default parent.
 
     All string valued-elements are either strictly alphanumeric, or must
     be enclosed in double quotes ("..."), with "\\" as escape character.
     """
 
     if text is None:
         ui.status(_(b"reading DAG from stdin\n"))
         text = ui.fin.read()
 
     cl = repo.changelog
     if len(cl) > 0 and not from_existing:
         raise error.Abort(_(b'repository is not empty'))
 
     # determine number of revs in DAG
     total = 0
     for type, data in dagparser.parsedag(text):
         if type == b'n':
             total += 1
 
     if mergeable_file:
         linesperrev = 2
         # make a file with k lines per rev
         initialmergedlines = [b'%d' % i for i in range(0, total * linesperrev)]
         initialmergedlines.append(b"")
 
     tags = []
     progress = ui.makeprogress(
         _(b'building'), unit=_(b'revisions'), total=total
     )
     with progress, repo.wlock(), repo.lock(), repo.transaction(b"builddag"):
         at = -1
         atbranch = b'default'
         nodeids = []
         id = 0
         progress.update(id)
         for type, data in dagparser.parsedag(text):
             if type == b'n':
                 ui.note((b'node %s\n' % pycompat.bytestr(data)))
                 id, ps = data
 
                 files = []
                 filecontent = {}
 
                 p2 = None
                 if mergeable_file:
                     fn = b"mf"
                     p1 = repo[ps[0]]
                     if len(ps) > 1:
                         p2 = repo[ps[1]]
                         pa = p1.ancestor(p2)
                         base, local, other = [
                             x[fn].data() for x in (pa, p1, p2)
                         ]
                         m3 = simplemerge.Merge3Text(base, local, other)
                         ml = [
                             l.strip()
                             for l in simplemerge.render_minimized(m3)[0]
                         ]
                         ml.append(b"")
                     elif at > 0:
                         ml = p1[fn].data().split(b"\n")
                     else:
                         ml = initialmergedlines
                     ml[id * linesperrev] += b" r%i" % id
                     mergedtext = b"\n".join(ml)
                     files.append(fn)
                     filecontent[fn] = mergedtext
 
                 if overwritten_file:
                     fn = b"of"
                     files.append(fn)
                     filecontent[fn] = b"r%i\n" % id
 
                 if new_file:
                     fn = b"nf%i" % id
                     files.append(fn)
                     filecontent[fn] = b"r%i\n" % id
                     if len(ps) > 1:
                         if not p2:
                             p2 = repo[ps[1]]
                         for fn in p2:
                             if fn.startswith(b"nf"):
                                 files.append(fn)
                                 filecontent[fn] = p2[fn].data()
 
                 def fctxfn(repo, cx, path):
                     if path in filecontent:
                         return context.memfilectx(
                             repo, cx, path, filecontent[path]
                         )
                     return None
 
                 if len(ps) == 0 or ps[0] < 0:
                     pars = [None, None]
                 elif len(ps) == 1:
                     pars = [nodeids[ps[0]], None]
                 else:
                     pars = [nodeids[p] for p in ps]
                 cx = context.memctx(
                     repo,
                     pars,
                     b"r%i" % id,
                     files,
                     fctxfn,
                     date=(id, 0),
                     user=b"debugbuilddag",
                     extra={b'branch': atbranch},
                 )
                 nodeid = repo.commitctx(cx)
                 nodeids.append(nodeid)
                 at = id
             elif type == b'l':
                 id, name = data
                 ui.note((b'tag %s\n' % name))
                 tags.append(b"%s %s\n" % (hex(repo.changelog.node(id)), name))
             elif type == b'a':
                 ui.note((b'branch %s\n' % data))
                 atbranch = data
             progress.update(id)
 
         if tags:
             repo.vfs.write(b"localtags", b"".join(tags))
 
 
 def _debugchangegroup(ui, gen, all=None, indent=0, **opts):
     indent_string = b' ' * indent
     if all:
         ui.writenoi18n(
             b"%sformat: id, p1, p2, cset, delta base, len(delta)\n"
             % indent_string
         )
 
         def showchunks(named):
             ui.write(b"\n%s%s\n" % (indent_string, named))
             for deltadata in gen.deltaiter():
                 node, p1, p2, cs, deltabase, delta, flags, sidedata = deltadata
                 ui.write(
                     b"%s%s %s %s %s %s %d\n"
                     % (
                         indent_string,
                         hex(node),
                         hex(p1),
                         hex(p2),
                         hex(cs),
                         hex(deltabase),
                         len(delta),
                     )
                 )
 
         gen.changelogheader()
         showchunks(b"changelog")
         gen.manifestheader()
         showchunks(b"manifest")
         for chunkdata in iter(gen.filelogheader, {}):
             fname = chunkdata[b'filename']
             showchunks(fname)
     else:
         if isinstance(gen, bundle2.unbundle20):
             raise error.Abort(_(b'use debugbundle2 for this file'))
         gen.changelogheader()
         for deltadata in gen.deltaiter():
             node, p1, p2, cs, deltabase, delta, flags, sidedata = deltadata
             ui.write(b"%s%s\n" % (indent_string, hex(node)))
 
 
 def _debugobsmarkers(ui, part, indent=0, **opts):
     """display version and markers contained in 'data'"""
     data = part.read()
     indent_string = b' ' * indent
     try:
         version, markers = obsolete._readmarkers(data)
     except error.UnknownVersion as exc:
         msg = b"%sunsupported version: %s (%d bytes)\n"
         msg %= indent_string, exc.version, len(data)
         ui.write(msg)
     else:
         msg = b"%sversion: %d (%d bytes)\n"
         msg %= indent_string, version, len(data)
         ui.write(msg)
         fm = ui.formatter(b'debugobsolete', pycompat.byteskwargs(opts))
         for rawmarker in sorted(markers):
             m = obsutil.marker(None, rawmarker)
             fm.startitem()
             fm.plain(indent_string)
             cmdutil.showmarker(fm, m)
         fm.end()
 
 
 def _debugphaseheads(ui, data, indent=0):
     """display version and markers contained in 'data'"""
     indent_string = b' ' * indent
     headsbyphase = phases.binarydecode(data)
     for phase in phases.allphases:
         for head in headsbyphase[phase]:
             ui.write(indent_string)
             ui.write(b'%s %s\n' % (hex(head), phases.phasenames[phase]))
 
 
 def _quasirepr(thing):
     if isinstance(thing, (dict, util.sortdict, collections.OrderedDict)):
         return b'{%s}' % (
             b', '.join(b'%s: %s' % (k, thing[k]) for k in sorted(thing))
         )
     return pycompat.bytestr(repr(thing))
 
 
 def _debugbundle2(ui, gen, all=None, **opts):
     """lists the contents of a bundle2"""
     if not isinstance(gen, bundle2.unbundle20):
         raise error.Abort(_(b'not a bundle2 file'))
     ui.write((b'Stream params: %s\n' % _quasirepr(gen.params)))
     parttypes = opts.get('part_type', [])
     for part in gen.iterparts():
         if parttypes and part.type not in parttypes:
             continue
         msg = b'%s -- %s (mandatory: %r)\n'
         ui.write((msg % (part.type, _quasirepr(part.params), part.mandatory)))
         if part.type == b'changegroup':
             version = part.params.get(b'version', b'01')
             cg = changegroup.getunbundler(version, part, b'UN')
             if not ui.quiet:
                 _debugchangegroup(ui, cg, all=all, indent=4, **opts)
         if part.type == b'obsmarkers':
             if not ui.quiet:
                 _debugobsmarkers(ui, part, indent=4, **opts)
         if part.type == b'phase-heads':
             if not ui.quiet:
                 _debugphaseheads(ui, part, indent=4)
 
 
 @command(
     b'debugbundle',
     [
         (b'a', b'all', None, _(b'show all details')),
         (b'', b'part-type', [], _(b'show only the named part type')),
         (b'', b'spec', None, _(b'print the bundlespec of the bundle')),
     ],
     _(b'FILE'),
     norepo=True,
 )
 def debugbundle(ui, bundlepath, all=None, spec=None, **opts):
     """lists the contents of a bundle"""
     with hg.openpath(ui, bundlepath) as f:
         if spec:
             spec = exchange.getbundlespec(ui, f)
             ui.write(b'%s\n' % spec)
             return
 
         gen = exchange.readbundle(ui, f, bundlepath)
         if isinstance(gen, bundle2.unbundle20):
             return _debugbundle2(ui, gen, all=all, **opts)
         _debugchangegroup(ui, gen, all=all, **opts)
 
 
 @command(b'debugcapabilities', [], _(b'PATH'), norepo=True)
 def debugcapabilities(ui, path, **opts):
     """lists the capabilities of a remote peer"""
     peer = hg.peer(ui, pycompat.byteskwargs(opts), path)
     try:
         caps = peer.capabilities()
         ui.writenoi18n(b'Main capabilities:\n')
         for c in sorted(caps):
             ui.write(b'  %s\n' % c)
         b2caps = bundle2.bundle2caps(peer)
         if b2caps:
             ui.writenoi18n(b'Bundle2 capabilities:\n')
             for key, values in sorted(b2caps.items()):
                 ui.write(b'  %s\n' % key)
                 for v in values:
                     ui.write(b'    %s\n' % v)
     finally:
         peer.close()
 
 
 @command(
     b'debugchangedfiles',
     [
         (
             b'',
             b'compute',
             False,
             b"compute information instead of reading it from storage",
         ),
     ],
     b'REV',
 )
 def debugchangedfiles(ui, repo, rev, **opts):
     """list the stored files changes for a revision"""
     ctx = logcmdutil.revsingle(repo, rev, None)
     files = None
 
     if opts['compute']:
         files = metadata.compute_all_files_changes(ctx)
     else:
         sd = repo.changelog.sidedata(ctx.rev())
         files_block = sd.get(sidedata.SD_FILES)
         if files_block is not None:
             files = metadata.decode_files_sidedata(sd)
     if files is not None:
         for f in sorted(files.touched):
             if f in files.added:
                 action = b"added"
             elif f in files.removed:
                 action = b"removed"
             elif f in files.merged:
                 action = b"merged"
             elif f in files.salvaged:
                 action = b"salvaged"
             else:
                 action = b"touched"
 
             copy_parent = b""
             copy_source = b""
             if f in files.copied_from_p1:
                 copy_parent = b"p1"
                 copy_source = files.copied_from_p1[f]
             elif f in files.copied_from_p2:
                 copy_parent = b"p2"
                 copy_source = files.copied_from_p2[f]
 
             data = (action, copy_parent, f, copy_source)
             template = b"%-8s %2s: %s, %s;\n"
             ui.write(template % data)
 
 
 @command(b'debugcheckstate', [], b'')
 def debugcheckstate(ui, repo):
     """validate the correctness of the current dirstate"""
     errors = verify.verifier(repo)._verify_dirstate()
     if errors:
         errstr = _(b"dirstate inconsistent with current parent's manifest")
         raise error.Abort(errstr)
 
 
 @command(
     b'debugcolor',
     [(b'', b'style', None, _(b'show all configured styles'))],
     b'hg debugcolor',
 )
 def debugcolor(ui, repo, **opts):
     """show available color, effects or style"""
     ui.writenoi18n(b'color mode: %s\n' % stringutil.pprint(ui._colormode))
     if opts.get('style'):
         return _debugdisplaystyle(ui)
     else:
         return _debugdisplaycolor(ui)
 
 
 def _debugdisplaycolor(ui):
     ui = ui.copy()
     ui._styles.clear()
     for effect in color._activeeffects(ui).keys():
         ui._styles[effect] = effect
     if ui._terminfoparams:
         for k, v in ui.configitems(b'color'):
             if k.startswith(b'color.'):
                 ui._styles[k] = k[6:]
             elif k.startswith(b'terminfo.'):
                 ui._styles[k] = k[9:]
     ui.write(_(b'available colors:\n'))
     # sort label with a '_' after the other to group '_background' entry.
     items = sorted(ui._styles.items(), key=lambda i: (b'_' in i[0], i[0], i[1]))
     for colorname, label in items:
         ui.write(b'%s\n' % colorname, label=label)
 
 
 def _debugdisplaystyle(ui):
     ui.write(_(b'available style:\n'))
     if not ui._styles:
         return
     width = max(len(s) for s in ui._styles)
     for label, effects in sorted(ui._styles.items()):
         ui.write(b'%s' % label, label=label)
         if effects:
             # 50
             ui.write(b': ')
             ui.write(b' ' * (max(0, width - len(label))))
             ui.write(b', '.join(ui.label(e, e) for e in effects.split()))
         ui.write(b'\n')
 
 
 @command(b'debugcreatestreamclonebundle', [], b'FILE')
 def debugcreatestreamclonebundle(ui, repo, fname):
     """create a stream clone bundle file
 
     Stream bundles are special bundles that are essentially archives of
     revlog files. They are commonly used for cloning very quickly.
 
     This command creates a "version 1" stream clone, which is deprecated in
     favor of newer versions of the stream protocol. Bundles using such newer
      versions can be generated using the `hg bundle` command.
     """
     # TODO we may want to turn this into an abort when this functionality
     # is moved into `hg bundle`.
     if phases.hassecret(repo):
         ui.warn(
             _(
                 b'(warning: stream clone bundle will contain secret '
                 b'revisions)\n'
             )
         )
 
     requirements, gen = streamclone.generatebundlev1(repo)
     changegroup.writechunks(ui, gen, fname)
 
     ui.write(_(b'bundle requirements: %s\n') % b', '.join(sorted(requirements)))
 
 
 @command(
     b'debugdag',
     [
         (b't', b'tags', None, _(b'use tags as labels')),
         (b'b', b'branches', None, _(b'annotate with branch names')),
         (b'', b'dots', None, _(b'use dots for runs')),
         (b's', b'spaces', None, _(b'separate elements by spaces')),
     ],
     _(b'[OPTION]... [FILE [REV]...]'),
     optionalrepo=True,
 )
 def debugdag(ui, repo, file_=None, *revs, **opts):
     """format the changelog or an index DAG as a concise textual description
 
     If you pass a revlog index, the revlog's DAG is emitted. If you list
     revision numbers, they get labeled in the output as rN.
 
     Otherwise, the changelog DAG of the current repo is emitted.
     """
     spaces = opts.get('spaces')
     dots = opts.get('dots')
     if file_:
         rlog = revlog.revlog(vfsmod.vfs(encoding.getcwd(), audit=False), file_)
         revs = {int(r) for r in revs}
 
         def events():
             for r in rlog:
                 yield b'n', (r, list(p for p in rlog.parentrevs(r) if p != -1))
                 if r in revs:
                     yield b'l', (r, b"r%i" % r)
 
     elif repo:
         cl = repo.changelog
         tags = opts.get('tags')
         branches = opts.get('branches')
         if tags:
             labels = {}
             for l, n in repo.tags().items():
                 labels.setdefault(cl.rev(n), []).append(l)
 
         def events():
             b = b"default"
             for r in cl:
                 if branches:
                     newb = cl.read(cl.node(r))[5][b'branch']
                     if newb != b:
                         yield b'a', newb
                         b = newb
                 yield b'n', (r, list(p for p in cl.parentrevs(r) if p != -1))
                 if tags:
                     ls = labels.get(r)
                     if ls:
                         for l in ls:
                             yield b'l', (r, l)
 
     else:
         raise error.Abort(_(b'need repo for changelog dag'))
 
     for line in dagparser.dagtextlines(
         events(),
         addspaces=spaces,
         wraplabels=True,
         wrapannotations=True,
         wrapnonlinear=dots,
         usedots=dots,
         maxlinewidth=70,
     ):
         ui.write(line)
         ui.write(b"\n")
 
 
 @command(b'debugdata', cmdutil.debugrevlogopts, _(b'-c|-m|FILE REV'))
 def debugdata(ui, repo, file_, rev=None, **opts):
     """dump the contents of a data file revision"""
     if opts.get('changelog') or opts.get('manifest') or opts.get('dir'):
         if rev is not None:
             raise error.InputError(
                 _(b'cannot specify a revision with other arguments')
             )
         file_, rev = None, file_
     elif rev is None:
         raise error.InputError(_(b'please specify a revision'))
     r = cmdutil.openstorage(
         repo, b'debugdata', file_, pycompat.byteskwargs(opts)
     )
     try:
         ui.write(r.rawdata(r.lookup(rev)))
     except KeyError:
         raise error.Abort(_(b'invalid revision identifier %s') % rev)
 
 
 @command(
     b'debugdate',
     [(b'e', b'extended', None, _(b'try extended date formats'))],
     _(b'[-e] DATE [RANGE]'),
     norepo=True,
     optionalrepo=True,
 )
 def debugdate(ui, date, range=None, **opts):
     """parse and display a date"""
     if opts["extended"]:
         d = dateutil.parsedate(date, dateutil.extendeddateformats)
     else:
         d = dateutil.parsedate(date)
     ui.writenoi18n(b"internal: %d %d\n" % d)
     ui.writenoi18n(b"standard: %s\n" % dateutil.datestr(d))
     if range:
         m = dateutil.matchdate(range)
         ui.writenoi18n(b"match: %s\n" % m(d[0]))
 
 
 @command(
     b'debugdeltachain',
     [
         (
             b'r',
             b'rev',
             [],
             _('restrict processing to these revlog revisions'),
         ),
         (
             b'',
             b'all-info',
-            True,
+            False,
             _('compute all information unless specified otherwise'),
         ),
         (
             b'',
             b'size-info',
             None,
             _('compute information related to deltas size'),
         ),
         (
             b'',
             b'dist-info',
             None,
             _('compute information related to base distance'),
         ),
         (
             b'',
             b'sparse-info',
             None,
             _('compute information related to sparse read'),
         ),
     ]
     + cmdutil.debugrevlogopts
     + cmdutil.formatteropts,
     _(b'-c|-m|FILE'),
     optionalrepo=True,
 )
 def debugdeltachain(ui, repo, file_=None, **opts):
     """dump information about delta chains in a revlog
 
     Output can be templatized. Available template keywords are:
 
     :``rev``:       revision number
     :``p1``:        parent 1 revision number (for reference)
     :``p2``:        parent 2 revision number (for reference)
 
     :``chainid``:   delta chain identifier (numbered by unique base)
     :``chainlen``:  delta chain length to this revision
 
     :``prevrev``:   previous revision in delta chain
     :``deltatype``: role of delta / how it was computed
                     - base:  a full snapshot
                     - snap:  an intermediate snapshot
                     - p1:    a delta against the first parent
                     - p2:    a delta against the second parent
                     - skip1: a delta against the same base as p1
                               (when p1 has empty delta
                     - skip2: a delta against the same base as p2
                               (when p2 has empty delta
                     - prev:  a delta against the previous revision
                     - other: a delta against an arbitrary revision
 
     :``compsize``:  compressed size of revision
     :``uncompsize``: uncompressed size of revision
     :``chainsize``: total size of compressed revisions in chain
     :``chainratio``: total chain size divided by uncompressed revision size
                     (new delta chains typically start at ratio 2.00)
 
     :``lindist``:   linear distance from base revision in delta chain to end
                     of this revision
     :``extradist``: total size of revisions not part of this delta chain from
                     base of delta chain to end of this revision; a measurement
                     of how much extra data we need to read/seek across to read
                     the delta chain for this revision
     :``extraratio``: extradist divided by chainsize; another representation of
                     how much unrelated data is needed to load this delta chain
 
     If the repository is configured to use the sparse read, additional keywords
     are available:
 
     :``readsize``:     total size of data read from the disk for a revision
                        (sum of the sizes of all the blocks)
     :``largestblock``: size of the largest block of data read from the disk
     :``readdensity``:  density of useful bytes in the data read from the disk
     :``srchunks``:  in how many data hunks the whole revision would be read
 
     It is possible to select the information to be computed, this can provide a
     noticeable speedup to the command in some cases.
 
     Always computed:
 
     - ``rev``
     - ``p1``
     - ``p2``
     - ``chainid``
     - ``chainlen``
     - ``prevrev``
     - ``deltatype``
 
     Computed with --no-size-info
 
     - ``compsize``
     - ``uncompsize``
     - ``chainsize``
     - ``chainratio``
 
     Computed with --no-dist-info
 
     - ``lindist``
     - ``extradist``
     - ``extraratio``
 
     Skipped with --no-sparse-info
 
     - ``readsize``
     - ``largestblock``
     - ``readdensity``
     - ``srchunks``
 
     --
 
     The sparse read can be enabled with experimental.sparse-read = True
     """
     revs = None
     revs_opt = opts.pop('rev', [])
     if revs_opt:
         revs = [int(r) for r in revs_opt]
 
-    all_info = opts.pop('all_info', True)
+    all_info = opts.pop('all_info', False)
     size_info = opts.pop('size_info', None)
     if size_info is None:
         size_info = all_info
     dist_info = opts.pop('dist_info', None)
     if dist_info is None:
         dist_info = all_info
     sparse_info = opts.pop('sparse_info', None)
     if sparse_info is None:
         sparse_info = all_info
 
     revlog = cmdutil.openrevlog(
         repo, b'debugdeltachain', file_, pycompat.byteskwargs(opts)
     )
     fm = ui.formatter(b'debugdeltachain', pycompat.byteskwargs(opts))
 
     lines = revlog_debug.debug_delta_chain(
         revlog,
         revs=revs,
         size_info=size_info,
         dist_info=dist_info,
         sparse_info=sparse_info,
     )
     # first entry is the header
     header = next(lines)
     fm.plain(header)
     for entry in lines:
         label = b' '.join(e[0] for e in entry)
         format = b' '.join(e[1] for e in entry)
         values = [e[3] for e in entry]
         data = dict((e[2], e[3]) for e in entry)
         fm.startitem()
         fm.write(label, format, *values, **data)
         fm.plain(b'\n')
     fm.end()
 
 
 @command(
     b'debug-delta-find',
     cmdutil.debugrevlogopts
     + cmdutil.formatteropts
     + [
         (
             b'',
             b'source',
             b'full',
             _(b'input data feed to the process (full, storage, p1, p2, prev)'),
         ),
     ],
     _(b'-c|-m|FILE REV'),
     optionalrepo=True,
 )
 def debugdeltafind(ui, repo, arg_1, arg_2=None, source=b'full', **opts):
     """display the computation to get to a valid delta for storing REV
 
     This command will replay the process used to find the "best" delta to store
     a revision and display information about all the steps used to get to that
     result.
 
     By default, the process is fed with a the full-text for the revision. This
     can be controlled with the --source flag.
 
     The revision use the revision number of the target storage (not changelog
     revision number).
 
     note: the process is initiated from a full text of the revision to store.
     """
     if arg_2 is None:
         file_ = None
         rev = arg_1
     else:
         file_ = arg_1
         rev = arg_2
 
     rev = int(rev)
 
     revlog = cmdutil.openrevlog(
         repo, b'debugdeltachain', file_, pycompat.byteskwargs(opts)
     )
     p1r, p2r = revlog.parentrevs(rev)
 
     if source == b'full':
         base_rev = nullrev
     elif source == b'storage':
         base_rev = revlog.deltaparent(rev)
     elif source == b'p1':
         base_rev = p1r
     elif source == b'p2':
         base_rev = p2r
     elif source == b'prev':
         base_rev = rev - 1
     else:
         raise error.InputError(b"invalid --source value: %s" % source)
 
     revlog_debug.debug_delta_find(ui, revlog, rev, base_rev=base_rev)
 
 
 @command(
     b'debugdirstate|debugstate',
     [
         (
             b'',
             b'nodates',
             None,
             _(b'do not display the saved mtime (DEPRECATED)'),
         ),
         (b'', b'dates', True, _(b'display the saved mtime')),
         (b'', b'datesort', None, _(b'sort by saved mtime')),
         (
             b'',
             b'docket',
             False,
             _(b'display the docket (metadata file) instead'),
         ),
         (
             b'',
             b'all',
             False,
             _(b'display dirstate-v2 tree nodes that would not exist in v1'),
         ),
     ],
     _(b'[OPTION]...'),
 )
 def debugstate(ui, repo, **opts):
     """show the contents of the current dirstate"""
 
     if opts.get("docket"):
         if not repo.dirstate._use_dirstate_v2:
             raise error.Abort(_(b'dirstate v1 does not have a docket'))
 
         docket = repo.dirstate._map.docket
         (
             start_offset,
             root_nodes,
             nodes_with_entry,
             nodes_with_copy,
             unused_bytes,
             _unused,
             ignore_pattern,
         ) = dirstateutils.v2.TREE_METADATA.unpack(docket.tree_metadata)
 
         ui.write(_(b"size of dirstate data: %d\n") % docket.data_size)
         ui.write(_(b"data file uuid: %s\n") % docket.uuid)
         ui.write(_(b"start offset of root nodes: %d\n") % start_offset)
         ui.write(_(b"number of root nodes: %d\n") % root_nodes)
         ui.write(_(b"nodes with entries: %d\n") % nodes_with_entry)
         ui.write(_(b"nodes with copies: %d\n") % nodes_with_copy)
         ui.write(_(b"number of unused bytes: %d\n") % unused_bytes)
         ui.write(
             _(b"ignore pattern hash: %s\n") % binascii.hexlify(ignore_pattern)
         )
         return
 
     nodates = not opts['dates']
     if opts.get('nodates') is not None:
         nodates = True
     datesort = opts.get('datesort')
 
     if datesort:
 
         def keyfunc(entry):
             filename, _state, _mode, _size, mtime = entry
             return (mtime, filename)
 
     else:
         keyfunc = None  # sort by filename
     entries = list(repo.dirstate._map.debug_iter(all=opts['all']))
     entries.sort(key=keyfunc)
     for entry in entries:
         filename, state, mode, size, mtime = entry
         if mtime == -1:
             timestr = b'unset               '
         elif nodates:
             timestr = b'set                 '
         else:
             timestr = time.strftime("%Y-%m-%d %H:%M:%S ", time.localtime(mtime))
             timestr = encoding.strtolocal(timestr)
         if mode & 0o20000:
             mode = b'lnk'
         else:
             mode = b'%3o' % (mode & 0o777 & ~util.umask)
         ui.write(b"%c %s %10d %s%s\n" % (state, mode, size, timestr, filename))
     for f in repo.dirstate.copies():
         ui.write(_(b"copy: %s -> %s\n") % (repo.dirstate.copied(f), f))
 
 
 @command(
     b'debugdirstateignorepatternshash',
     [],
     _(b''),
 )
 def debugdirstateignorepatternshash(ui, repo, **opts):
     """show the hash of ignore patterns stored in dirstate if v2,
     or nothing for dirstate-v2
     """
     if repo.dirstate._use_dirstate_v2:
         docket = repo.dirstate._map.docket
         hash_len = 20  # 160 bits for SHA-1
         hash_bytes = docket.tree_metadata[-hash_len:]
         ui.write(binascii.hexlify(hash_bytes) + b'\n')
 
 
 @command(
     b'debugdiscovery',
     [
         (b'', b'old', None, _(b'use old-style discovery')),
         (
             b'',
             b'nonheads',
             None,
             _(b'use old-style discovery with non-heads included'),
         ),
         (b'', b'rev', [], b'restrict discovery to this set of revs'),
         (b'', b'seed', b'12323', b'specify the random seed use for discovery'),
         (
             b'',
             b'local-as-revs',
             b"",
             b'treat local has having these revisions only',
         ),
         (
             b'',
             b'remote-as-revs',
             b"",
             b'use local as remote, with only these revisions',
         ),
     ]
     + cmdutil.remoteopts
     + cmdutil.formatteropts,
     _(b'[--rev REV] [OTHER]'),
 )
 def debugdiscovery(ui, repo, remoteurl=b"default", **opts):
     """runs the changeset discovery protocol in isolation
 
     The local peer can be "replaced" by a subset of the local repository by
     using the `--local-as-revs` flag. In the same way, the usual `remote` peer
     can be "replaced" by a subset of the local repository using the
     `--remote-as-revs` flag. This is useful to efficiently debug pathological
     discovery situations.
 
     The following developer oriented config are relevant for people playing with this command:
 
     * devel.discovery.exchange-heads=True
 
       If False, the discovery will not start with
       remote head fetching and local head querying.
 
     * devel.discovery.grow-sample=True
 
       If False, the sample size used in set discovery will not be increased
       through the process
 
     * devel.discovery.grow-sample.dynamic=True
 
       When discovery.grow-sample.dynamic is True, the default, the sample size is
       adapted to the shape of the undecided set (it is set to the max of:
       <target-size>, len(roots(undecided)), len(heads(undecided)
 
     * devel.discovery.grow-sample.rate=1.05
 
       the rate at which the sample grow
 
     * devel.discovery.randomize=True
 
       If andom sampling during discovery are deterministic. It is meant for
       integration tests.
 
     * devel.discovery.sample-size=200
 
       Control the initial size of the discovery sample
 
     * devel.discovery.sample-size.initial=100
 
       Control the initial size of the discovery for initial change
     """
     unfi = repo.unfiltered()
 
     # setup potential extra filtering
     local_revs = opts["local_as_revs"]
     remote_revs = opts["remote_as_revs"]
 
     # make sure tests are repeatable
     random.seed(int(opts['seed']))
 
     if not remote_revs:
         path = urlutil.get_unique_pull_path_obj(
             b'debugdiscovery', ui, remoteurl
         )
         branches = (path.branch, [])
         remote = hg.peer(repo, pycompat.byteskwargs(opts), path)
         ui.status(_(b'comparing with %s\n') % urlutil.hidepassword(path.loc))
     else:
         branches = (None, [])
         remote_filtered_revs = logcmdutil.revrange(
             unfi, [b"not (::(%s))" % remote_revs]
         )
         remote_filtered_revs = frozenset(remote_filtered_revs)
 
         def remote_func(x):
             return remote_filtered_revs
 
         repoview.filtertable[b'debug-discovery-remote-filter'] = remote_func
 
         remote = repo.peer()
         remote._repo = remote._repo.filtered(b'debug-discovery-remote-filter')
 
     if local_revs:
         local_filtered_revs = logcmdutil.revrange(
             unfi, [b"not (::(%s))" % local_revs]
         )
         local_filtered_revs = frozenset(local_filtered_revs)
 
         def local_func(x):
             return local_filtered_revs
 
         repoview.filtertable[b'debug-discovery-local-filter'] = local_func
         repo = repo.filtered(b'debug-discovery-local-filter')
 
     data = {}
     if opts.get('old'):
 
         def doit(pushedrevs, remoteheads, remote=remote):
             if not hasattr(remote, 'branches'):
                 # enable in-client legacy support
                 remote = localrepo.locallegacypeer(remote.local())
                 if remote_revs:
                     r = remote._repo.filtered(b'debug-discovery-remote-filter')
                     remote._repo = r
             common, _in, hds = treediscovery.findcommonincoming(
                 repo, remote, force=True, audit=data
             )
             common = set(common)
             if not opts.get('nonheads'):
                 ui.writenoi18n(
                     b"unpruned common: %s\n"
                     % b" ".join(sorted(short(n) for n in common))
                 )
 
                 clnode = repo.changelog.node
                 common = repo.revs(b'heads(::%ln)', common)
                 common = {clnode(r) for r in common}
             return common, hds
 
     else:
 
         def doit(pushedrevs, remoteheads, remote=remote):
             nodes = None
             if pushedrevs:
                 revs = logcmdutil.revrange(repo, pushedrevs)
                 nodes = [repo[r].node() for r in revs]
             common, any, hds = setdiscovery.findcommonheads(
                 ui,
                 repo,
                 remote,
                 ancestorsof=nodes,
                 audit=data,
                 abortwhenunrelated=False,
             )
             return common, hds
 
     remoterevs, _checkout = hg.addbranchrevs(repo, remote, branches, revs=None)
     localrevs = opts['rev']
 
     fm = ui.formatter(b'debugdiscovery', pycompat.byteskwargs(opts))
     if fm.strict_format:
 
         @contextlib.contextmanager
         def may_capture_output():
             ui.pushbuffer()
             yield
             data[b'output'] = ui.popbuffer()
 
     else:
         may_capture_output = util.nullcontextmanager
     with may_capture_output():
         with util.timedcm('debug-discovery') as t:
             common, hds = doit(localrevs, remoterevs)
 
     # compute all statistics
     if len(common) == 1 and repo.nullid in common:
         common = set()
     heads_common = set(common)
     heads_remote = set(hds)
     heads_local = set(repo.heads())
     # note: they cannot be a local or remote head that is in common and not
     # itself a head of common.
     heads_common_local = heads_common & heads_local
     heads_common_remote = heads_common & heads_remote
     heads_common_both = heads_common & heads_remote & heads_local
 
     all = repo.revs(b'all()')
     common = repo.revs(b'::%ln', common)
     roots_common = repo.revs(b'roots(::%ld)', common)
     missing = repo.revs(b'not ::%ld', common)
     heads_missing = repo.revs(b'heads(%ld)', missing)
     roots_missing = repo.revs(b'roots(%ld)', missing)
     assert len(common) + len(missing) == len(all)
 
     initial_undecided = repo.revs(
         b'not (::%ln or %ln::)', heads_common_remote, heads_common_local
     )
     heads_initial_undecided = repo.revs(b'heads(%ld)', initial_undecided)
     roots_initial_undecided = repo.revs(b'roots(%ld)', initial_undecided)
     common_initial_undecided = initial_undecided & common
     missing_initial_undecided = initial_undecided & missing
 
     data[b'elapsed'] = t.elapsed
     data[b'nb-common-heads'] = len(heads_common)
     data[b'nb-common-heads-local'] = len(heads_common_local)
     data[b'nb-common-heads-remote'] = len(heads_common_remote)
     data[b'nb-common-heads-both'] = len(heads_common_both)
     data[b'nb-common-roots'] = len(roots_common)
     data[b'nb-head-local'] = len(heads_local)
     data[b'nb-head-local-missing'] = len(heads_local) - len(heads_common_local)
     data[b'nb-head-remote'] = len(heads_remote)
     data[b'nb-head-remote-unknown'] = len(heads_remote) - len(
         heads_common_remote
     )
     data[b'nb-revs'] = len(all)
     data[b'nb-revs-common'] = len(common)
     data[b'nb-revs-missing'] = len(missing)
     data[b'nb-missing-heads'] = len(heads_missing)
     data[b'nb-missing-roots'] = len(roots_missing)
     data[b'nb-ini_und'] = len(initial_undecided)
     data[b'nb-ini_und-heads'] = len(heads_initial_undecided)
     data[b'nb-ini_und-roots'] = len(roots_initial_undecided)
     data[b'nb-ini_und-common'] = len(common_initial_undecided)
     data[b'nb-ini_und-missing'] = len(missing_initial_undecided)
 
     fm.startitem()
     fm.data(**pycompat.strkwargs(data))
     # display discovery summary
     fm.plain(b"elapsed time:  %(elapsed)f seconds\n" % data)
     fm.plain(b"round-trips:           %(total-roundtrips)9d\n" % data)
     if b'total-round-trips-heads' in data:
         fm.plain(
             b"  round-trips-heads:    %(total-round-trips-heads)9d\n" % data
         )
     if b'total-round-trips-branches' in data:
         fm.plain(
             b"  round-trips-branches:    %(total-round-trips-branches)9d\n"
             % data
         )
     if b'total-round-trips-between' in data:
         fm.plain(
             b"  round-trips-between:    %(total-round-trips-between)9d\n" % data
         )
     fm.plain(b"queries:               %(total-queries)9d\n" % data)
     if b'total-queries-branches' in data:
         fm.plain(b"  queries-branches:    %(total-queries-branches)9d\n" % data)
     if b'total-queries-between' in data:
         fm.plain(b"  queries-between:     %(total-queries-between)9d\n" % data)
     fm.plain(b"heads summary:\n")
     fm.plain(b"  total common heads:  %(nb-common-heads)9d\n" % data)
     fm.plain(b"    also local heads:  %(nb-common-heads-local)9d\n" % data)
     fm.plain(b"    also remote heads: %(nb-common-heads-remote)9d\n" % data)
     fm.plain(b"    both:              %(nb-common-heads-both)9d\n" % data)
     fm.plain(b"  local heads:         %(nb-head-local)9d\n" % data)
     fm.plain(b"    common:            %(nb-common-heads-local)9d\n" % data)
     fm.plain(b"    missing:           %(nb-head-local-missing)9d\n" % data)
     fm.plain(b"  remote heads:        %(nb-head-remote)9d\n" % data)
     fm.plain(b"    common:            %(nb-common-heads-remote)9d\n" % data)
     fm.plain(b"    unknown:           %(nb-head-remote-unknown)9d\n" % data)
     fm.plain(b"local changesets:      %(nb-revs)9d\n" % data)
     fm.plain(b"  common:              %(nb-revs-common)9d\n" % data)
     fm.plain(b"    heads:             %(nb-common-heads)9d\n" % data)
     fm.plain(b"    roots:             %(nb-common-roots)9d\n" % data)
     fm.plain(b"  missing:             %(nb-revs-missing)9d\n" % data)
     fm.plain(b"    heads:             %(nb-missing-heads)9d\n" % data)
     fm.plain(b"    roots:             %(nb-missing-roots)9d\n" % data)
     fm.plain(b"  first undecided set: %(nb-ini_und)9d\n" % data)
     fm.plain(b"    heads:             %(nb-ini_und-heads)9d\n" % data)
     fm.plain(b"    roots:             %(nb-ini_und-roots)9d\n" % data)
     fm.plain(b"    common:            %(nb-ini_und-common)9d\n" % data)
     fm.plain(b"    missing:           %(nb-ini_und-missing)9d\n" % data)
 
     if ui.verbose:
         fm.plain(
             b"common heads: %s\n"
             % b" ".join(sorted(short(n) for n in heads_common))
         )
     fm.end()
 
 
 _chunksize = 4 << 10
 
 
 @command(
     b'debugdownload',
     [
         (b'o', b'output', b'', _(b'path')),
     ],
     optionalrepo=True,
 )
 def debugdownload(ui, repo, url, output=None, **opts):
     """download a resource using Mercurial logic and config"""
     fh = urlmod.open(ui, url, output)
 
     dest = ui
     if output:
         dest = open(output, b"wb", _chunksize)
     try:
         data = fh.read(_chunksize)
         while data:
             dest.write(data)
             data = fh.read(_chunksize)
     finally:
         if output:
             dest.close()
 
 
 @command(b'debugextensions', cmdutil.formatteropts, [], optionalrepo=True)
 def debugextensions(ui, repo, **opts):
     '''show information about active extensions'''
     exts = extensions.extensions(ui)
     hgver = util.version()
     fm = ui.formatter(b'debugextensions', pycompat.byteskwargs(opts))
     for extname, extmod in sorted(exts, key=operator.itemgetter(0)):
         isinternal = extensions.ismoduleinternal(extmod)
         extsource = None
 
         if hasattr(extmod, '__file__'):
             extsource = pycompat.fsencode(extmod.__file__)
         elif getattr(sys, 'oxidized', False):
             extsource = pycompat.sysexecutable
         if isinternal:
             exttestedwith = []  # never expose magic string to users
         else:
             exttestedwith = getattr(extmod, 'testedwith', b'').split()
         extbuglink = getattr(extmod, 'buglink', None)
 
         fm.startitem()
 
         if ui.quiet or ui.verbose:
             fm.write(b'name', b'%s\n', extname)
         else:
             fm.write(b'name', b'%s', extname)
             if isinternal or hgver in exttestedwith:
                 fm.plain(b'\n')
             elif not exttestedwith:
                 fm.plain(_(b' (untested!)\n'))
             else:
                 lasttestedversion = exttestedwith[-1]
                 fm.plain(b' (%s!)\n' % lasttestedversion)
 
         fm.condwrite(
             ui.verbose and extsource,
             b'source',
             _(b'  location: %s\n'),
             extsource or b"",
         )
 
         if ui.verbose:
             fm.plain(_(b'  bundled: %s\n') % [b'no', b'yes'][isinternal])
         fm.data(bundled=isinternal)
 
         fm.condwrite(
             ui.verbose and exttestedwith,
             b'testedwith',
             _(b'  tested with: %s\n'),
             fm.formatlist(exttestedwith, name=b'ver'),
         )
 
         fm.condwrite(
             ui.verbose and extbuglink,
             b'buglink',
             _(b'  bug reporting: %s\n'),
             extbuglink or b"",
         )
 
     fm.end()
 
 
 @command(
     b'debugfileset',
     [
         (
             b'r',
             b'rev',
             b'',
             _(b'apply the filespec on this revision'),
             _(b'REV'),
         ),
         (
             b'',
             b'all-files',
             False,
             _(b'test files from all revisions and working directory'),
         ),
         (
             b's',
             b'show-matcher',
             None,
             _(b'print internal representation of matcher'),
         ),
         (
             b'p',
             b'show-stage',
             [],
             _(b'print parsed tree at the given stage'),
             _(b'NAME'),
         ),
     ],
     _(b'[-r REV] [--all-files] [OPTION]... FILESPEC'),
 )
 def debugfileset(ui, repo, expr, **opts):
     '''parse and apply a fileset specification'''
     from . import fileset
 
     fileset.symbols  # force import of fileset so we have predicates to optimize
 
     ctx = logcmdutil.revsingle(repo, opts.get('rev'), None)
 
     stages = [
         (b'parsed', pycompat.identity),
         (b'analyzed', filesetlang.analyze),
         (b'optimized', filesetlang.optimize),
     ]
     stagenames = {n for n, f in stages}
 
     showalways = set()
     if ui.verbose and not opts['show_stage']:
         # show parsed tree by --verbose (deprecated)
         showalways.add(b'parsed')
     if opts['show_stage'] == [b'all']:
         showalways.update(stagenames)
     else:
         for n in opts['show_stage']:
             if n not in stagenames:
                 raise error.Abort(_(b'invalid stage name: %s') % n)
         showalways.update(opts['show_stage'])
 
     tree = filesetlang.parse(expr)
     for n, f in stages:
         tree = f(tree)
         if n in showalways:
             if opts['show_stage'] or n != b'parsed':
                 ui.write(b"* %s:\n" % n)
             ui.write(filesetlang.prettyformat(tree), b"\n")
 
     files = set()
     if opts['all_files']:
         for r in repo:
             c = repo[r]
             files.update(c.files())
             files.update(c.substate)
     if opts['all_files'] or ctx.rev() is None:
         wctx = repo[None]
         files.update(
             repo.dirstate.walk(
                 scmutil.matchall(repo),
                 subrepos=list(wctx.substate),
                 unknown=True,
                 ignored=True,
             )
         )
         files.update(wctx.substate)
     else:
         files.update(ctx.files())
         files.update(ctx.substate)
 
     m = ctx.matchfileset(repo.getcwd(), expr)
     if opts['show_matcher'] or (opts['show_matcher'] is None and ui.verbose):
         ui.writenoi18n(b'* matcher:\n', stringutil.prettyrepr(m), b'\n')
     for f in sorted(files):
         if not m(f):
             continue
         ui.write(b"%s\n" % f)
 
 
 @command(
     b"debug-repair-issue6528",
     [
         (
             b'',
             b'to-report',
             b'',
             _(b'build a report of affected revisions to this file'),
             _(b'FILE'),
         ),
         (
             b'',
             b'from-report',
             b'',
             _(b'repair revisions listed in this report file'),
             _(b'FILE'),
         ),
         (
             b'',
             b'paranoid',
             False,
             _(b'check that both detection methods do the same thing'),
         ),
     ]
     + cmdutil.dryrunopts,
 )
 def debug_repair_issue6528(ui, repo, **opts):
     """find affected revisions and repair them. See issue6528 for more details.
 
     The `--to-report` and `--from-report` flags allow you to cache and reuse the
     computation of affected revisions for a given repository across clones.
     The report format is line-based (with empty lines ignored):
 
     ```
     <ascii-hex of the affected revision>,... <unencoded filelog index filename>
     ```
 
     There can be multiple broken revisions per filelog, they are separated by
     a comma with no spaces. The only space is between the revision(s) and the
     filename.
 
     Note that this does *not* mean that this repairs future affected revisions,
     that needs a separate fix at the exchange level that was introduced in
     Mercurial 5.9.1.
 
     There is a `--paranoid` flag to test that the fast implementation is correct
     by checking it against the slow implementation. Since this matter is quite
     urgent and testing every edge-case is probably quite costly, we use this
     method to test on large repositories as a fuzzing method of sorts.
     """
     cmdutil.check_incompatible_arguments(
         opts, 'to_report', ['from_report', 'dry_run']
     )
     dry_run = opts.get('dry_run')
     to_report = opts.get('to_report')
     from_report = opts.get('from_report')
     paranoid = opts.get('paranoid')
     # TODO maybe add filelog pattern and revision pattern parameters to help
     # narrow down the search for users that know what they're looking for?
 
     if requirements.REVLOGV1_REQUIREMENT not in repo.requirements:
         msg = b"can only repair revlogv1 repositories, v2 is not affected"
         raise error.Abort(_(msg))
 
     rewrite.repair_issue6528(
         ui,
         repo,
         dry_run=dry_run,
         to_report=to_report,
         from_report=from_report,
         paranoid=paranoid,
     )
 
 
 @command(b'debugformat', [] + cmdutil.formatteropts)
 def debugformat(ui, repo, **opts):
     """display format information about the current repository
 
     Use --verbose to get extra information about current config value and
     Mercurial default."""
     maxvariantlength = max(len(fv.name) for fv in upgrade.allformatvariant)
     maxvariantlength = max(len(b'format-variant'), maxvariantlength)
 
     def makeformatname(name):
         return b'%s:' + (b' ' * (maxvariantlength - len(name)))
 
     fm = ui.formatter(b'debugformat', pycompat.byteskwargs(opts))
     if fm.isplain():
 
         def formatvalue(value):
             if hasattr(value, 'startswith'):
                 return value
             if value:
                 return b'yes'
             else:
                 return b'no'
 
     else:
         formatvalue = pycompat.identity
 
     fm.plain(b'format-variant')
     fm.plain(b' ' * (maxvariantlength - len(b'format-variant')))
     fm.plain(b' repo')
     if ui.verbose:
         fm.plain(b' config default')
     fm.plain(b'\n')
     for fv in upgrade.allformatvariant:
         fm.startitem()
         repovalue = fv.fromrepo(repo)
         configvalue = fv.fromconfig(repo)
 
         if repovalue != configvalue:
             namelabel = b'formatvariant.name.mismatchconfig'
             repolabel = b'formatvariant.repo.mismatchconfig'
         elif repovalue != fv.default:
             namelabel = b'formatvariant.name.mismatchdefault'
             repolabel = b'formatvariant.repo.mismatchdefault'
         else:
             namelabel = b'formatvariant.name.uptodate'
             repolabel = b'formatvariant.repo.uptodate'
 
         fm.write(b'name', makeformatname(fv.name), fv.name, label=namelabel)
         fm.write(b'repo', b' %3s', formatvalue(repovalue), label=repolabel)
         if fv.default != configvalue:
             configlabel = b'formatvariant.config.special'
         else:
             configlabel = b'formatvariant.config.default'
         fm.condwrite(
             ui.verbose,
             b'config',
             b' %6s',
             formatvalue(configvalue),
             label=configlabel,
         )
         fm.condwrite(
             ui.verbose,
             b'default',
             b' %7s',
             formatvalue(fv.default),
             label=b'formatvariant.default',
         )
         fm.plain(b'\n')
     fm.end()
 
 
 @command(b'debugfsinfo', [], _(b'[PATH]'), norepo=True)
 def debugfsinfo(ui, path=b"."):
     """show information detected about current filesystem"""
     ui.writenoi18n(b'path: %s\n' % path)
     ui.writenoi18n(
         b'mounted on: %s\n' % (util.getfsmountpoint(path) or b'(unknown)')
     )
     ui.writenoi18n(b'exec: %s\n' % (util.checkexec(path) and b'yes' or b'no'))
     ui.writenoi18n(b'fstype: %s\n' % (util.getfstype(path) or b'(unknown)'))
     ui.writenoi18n(
         b'symlink: %s\n' % (util.checklink(path) and b'yes' or b'no')
     )
     ui.writenoi18n(
         b'hardlink: %s\n' % (util.checknlink(path) and b'yes' or b'no')
     )
     casesensitive = b'(unknown)'
     try:
         with pycompat.namedtempfile(prefix=b'.debugfsinfo', dir=path) as f:
             casesensitive = util.fscasesensitive(f.name) and b'yes' or b'no'
     except OSError:
         pass
     ui.writenoi18n(b'case-sensitive: %s\n' % casesensitive)
 
 
 @command(
     b'debuggetbundle',
     [
         (b'H', b'head', [], _(b'id of head node'), _(b'ID')),
         (b'C', b'common', [], _(b'id of common node'), _(b'ID')),
         (
             b't',
             b'type',
             b'bzip2',
             _(b'bundle compression type to use'),
             _(b'TYPE'),
         ),
     ],
     _(b'REPO FILE [-H|-C ID]...'),
     norepo=True,
 )
 def debuggetbundle(ui, repopath, bundlepath, head=None, common=None, **opts):
     """retrieves a bundle from a repo
 
     Every ID must be a full-length hex node id string. Saves the bundle to the
     given file.
     """
     repo = hg.peer(ui, pycompat.byteskwargs(opts), repopath)
     if not repo.capable(b'getbundle'):
         raise error.Abort(b"getbundle() not supported by target repository")
     args = {}
     if common:
         args['common'] = [bin(s) for s in common]
     if head:
         args['heads'] = [bin(s) for s in head]
     # TODO: get desired bundlecaps from command line.
     args['bundlecaps'] = None
     bundle = repo.getbundle(b'debug', **args)
 
     bundletype = opts.get('type', b'bzip2').lower()
     btypes = {
         b'none': b'HG10UN',
         b'bzip2': b'HG10BZ',
         b'gzip': b'HG10GZ',
         b'bundle2': b'HG20',
     }
     bundletype = btypes.get(bundletype)
     if bundletype not in bundle2.bundletypes:
         raise error.Abort(_(b'unknown bundle type specified with --type'))
     bundle2.writebundle(ui, bundle, bundlepath, bundletype)
 
 
 @command(b'debugignore', [], b'[FILE]...')
 def debugignore(ui, repo, *files, **opts):
     """display the combined ignore pattern and information about ignored files
 
     With no argument display the combined ignore pattern.
 
     Given space separated file names, shows if the given file is ignored and
     if so, show the ignore rule (file and line number) that matched it.
     """
     ignore = repo.dirstate._ignore
     if not files:
         # Show all the patterns
         ui.write(b"%s\n" % pycompat.byterepr(ignore))
     else:
         m = scmutil.match(repo[None], pats=files)
         uipathfn = scmutil.getuipathfn(repo, legacyrelativevalue=True)
         for f in m.files():
             nf = util.normpath(f)
             ignored = None
             ignoredata = None
             if nf != b'.':
                 if ignore(nf):
                     ignored = nf
                     ignoredata = repo.dirstate._ignorefileandline(nf)
                 else:
                     for p in pathutil.finddirs(nf):
                         if ignore(p):
                             ignored = p
                             ignoredata = repo.dirstate._ignorefileandline(p)
                             break
             if ignored:
                 if ignored == nf:
                     ui.write(_(b"%s is ignored\n") % uipathfn(f))
                 else:
                     ui.write(
                         _(
                             b"%s is ignored because of "
                             b"containing directory %s\n"
                         )
                         % (uipathfn(f), ignored)
                     )
                 ignorefile, lineno, line = ignoredata
                 ui.write(
                     _(b"(ignore rule in %s, line %d: '%s')\n")
                     % (ignorefile, lineno, line)
                 )
             else:
                 ui.write(_(b"%s is not ignored\n") % uipathfn(f))
 
 
 @command(
     b'debug-revlog-index|debugindex',
     cmdutil.debugrevlogopts + cmdutil.formatteropts,
     _(b'-c|-m|FILE'),
 )
 def debugindex(ui, repo, file_=None, **opts):
     """dump index data for a revlog"""
     opts = pycompat.byteskwargs(opts)
     store = cmdutil.openstorage(repo, b'debugindex', file_, opts)
 
     fm = ui.formatter(b'debugindex', opts)
 
     revlog = getattr(store, '_revlog', store)
 
     return revlog_debug.debug_index(
         ui,
         repo,
         formatter=fm,
         revlog=revlog,
         full_node=ui.debugflag,
     )
 
 
 @command(
     b'debugindexdot',
     cmdutil.debugrevlogopts,
     _(b'-c|-m|FILE'),
     optionalrepo=True,
 )
 def debugindexdot(ui, repo, file_=None, **opts):
     """dump an index DAG as a graphviz dot file"""
     r = cmdutil.openstorage(
         repo, b'debugindexdot', file_, pycompat.byteskwargs(opts)
     )
     ui.writenoi18n(b"digraph G {\n")
     for i in r:
         node = r.node(i)
         pp = r.parents(node)
         ui.write(b"\t%d -> %d\n" % (r.rev(pp[0]), i))
         if pp[1] != repo.nullid:
             ui.write(b"\t%d -> %d\n" % (r.rev(pp[1]), i))
     ui.write(b"}\n")
 
 
 @command(b'debugindexstats', [])
 def debugindexstats(ui, repo):
     """show stats related to the changelog index"""
     repo.changelog.shortest(repo.nullid, 1)
     index = repo.changelog.index
     if not hasattr(index, 'stats'):
         raise error.Abort(_(b'debugindexstats only works with native code'))
     for k, v in sorted(index.stats().items()):
         ui.write(b'%s: %d\n' % (k, v))
 
 
 @command(b'debuginstall', [] + cmdutil.formatteropts, b'', norepo=True)
 def debuginstall(ui, **opts):
     """test Mercurial installation
 
     Returns 0 on success.
     """
     problems = 0
 
     fm = ui.formatter(b'debuginstall', pycompat.byteskwargs(opts))
     fm.startitem()
 
     # encoding might be unknown or wrong. don't translate these messages.
     fm.write(b'encoding', b"checking encoding (%s)...\n", encoding.encoding)
     err = None
     try:
         codecs.lookup(pycompat.sysstr(encoding.encoding))
     except LookupError as inst:
         err = stringutil.forcebytestr(inst)
         problems += 1
     fm.condwrite(
         err,
         b'encodingerror',
         b" %s\n (check that your locale is properly set)\n",
         err,
     )
 
     # Python
     pythonlib = None
     if hasattr(os, '__file__'):
         pythonlib = os.path.dirname(pycompat.fsencode(os.__file__))
     elif getattr(sys, 'oxidized', False):
         pythonlib = pycompat.sysexecutable
 
     fm.write(
         b'pythonexe',
         _(b"checking Python executable (%s)\n"),
         pycompat.sysexecutable or _(b"unknown"),
     )
     fm.write(
         b'pythonimplementation',
         _(b"checking Python implementation (%s)\n"),
         pycompat.sysbytes(platform.python_implementation()),
     )
     fm.write(
         b'pythonver',
         _(b"checking Python version (%s)\n"),
         (b"%d.%d.%d" % sys.version_info[:3]),
     )
     fm.write(
         b'pythonlib',
         _(b"checking Python lib (%s)...\n"),
         pythonlib or _(b"unknown"),
     )
 
     try:
         from . import rustext  # pytype: disable=import-error
 
         rustext.__doc__  # trigger lazy import
     except ImportError:
         rustext = None
 
     security = set(sslutil.supportedprotocols)
     if sslutil.hassni:
         security.add(b'sni')
 
     fm.write(
         b'pythonsecurity',
         _(b"checking Python security support (%s)\n"),
         fm.formatlist(sorted(security), name=b'protocol', fmt=b'%s', sep=b','),
     )
 
     # These are warnings, not errors. So don't increment problem count. This
     # may change in the future.
     if b'tls1.2' not in security:
         fm.plain(
             _(
                 b'  TLS 1.2 not supported by Python install; '
                 b'network connections lack modern security\n'
             )
         )
     if b'sni' not in security:
         fm.plain(
             _(
                 b'  SNI not supported by Python install; may have '
                 b'connectivity issues with some servers\n'
             )
         )
 
     fm.plain(
         _(
             b"checking Rust extensions (%s)\n"
             % (b'missing' if rustext is None else b'installed')
         ),
     )
 
     # TODO print CA cert info
 
     # hg version
     hgver = util.version()
     fm.write(
         b'hgver', _(b"checking Mercurial version (%s)\n"), hgver.split(b'+')[0]
     )
     fm.write(
         b'hgverextra',
         _(b"checking Mercurial custom build (%s)\n"),
         b'+'.join(hgver.split(b'+')[1:]),
     )
 
     # compiled modules
     hgmodules = None
     if hasattr(sys.modules[__name__], '__file__'):
         hgmodules = os.path.dirname(pycompat.fsencode(__file__))
     elif getattr(sys, 'oxidized', False):
         hgmodules = pycompat.sysexecutable
 
     fm.write(
         b'hgmodulepolicy', _(b"checking module policy (%s)\n"), policy.policy
     )
     fm.write(
         b'hgmodules',
         _(b"checking installed modules (%s)...\n"),
         hgmodules or _(b"unknown"),
     )
 
     rustandc = policy.policy in (b'rust+c', b'rust+c-allow')
     rustext = rustandc  # for now, that's the only case
     cext = policy.policy in (b'c', b'allow') or rustandc
     nopure = cext or rustext
     if nopure:
         err = None
         try:
             if cext:
                 from .cext import (  # pytype: disable=import-error
                     base85,
                     bdiff,
                     mpatch,
                     osutil,
                 )
 
                 # quiet pyflakes
                 dir(bdiff), dir(mpatch), dir(base85), dir(osutil)
             if rustext:
                 from .rustext import (  # pytype: disable=import-error
                     ancestor,
                     dirstate,
                 )
 
                 dir(ancestor), dir(dirstate)  # quiet pyflakes
         except Exception as inst:
             err = stringutil.forcebytestr(inst)
             problems += 1
         fm.condwrite(err, b'extensionserror', b" %s\n", err)
 
     compengines = util.compengines._engines.values()
     fm.write(
         b'compengines',
         _(b'checking registered compression engines (%s)\n'),
         fm.formatlist(
             sorted(e.name() for e in compengines),
             name=b'compengine',
             fmt=b'%s',
             sep=b', ',
         ),
     )
     fm.write(
         b'compenginesavail',
         _(b'checking available compression engines (%s)\n'),
         fm.formatlist(
             sorted(e.name() for e in compengines if e.available()),
             name=b'compengine',
             fmt=b'%s',
             sep=b', ',
         ),
     )
     wirecompengines = compression.compengines.supportedwireengines(
         compression.SERVERROLE
     )
     fm.write(
         b'compenginesserver',
         _(
             b'checking available compression engines '
             b'for wire protocol (%s)\n'
         ),
         fm.formatlist(
             [e.name() for e in wirecompengines if e.wireprotosupport()],
             name=b'compengine',
             fmt=b'%s',
             sep=b', ',
         ),
     )
     re2 = b'missing'
     if util.has_re2():
         re2 = b'available'
     fm.plain(_(b'checking "re2" regexp engine (%s)\n') % re2)
     fm.data(re2=bool(util._re2))
 
     # templates
     p = templater.templatedir()
     fm.write(b'templatedirs', b'checking templates (%s)...\n', p or b'')
     fm.condwrite(not p, b'', _(b" no template directories found\n"))
     if p:
         (m, fp) = templater.try_open_template(b"map-cmdline.default")
         if m:
             # template found, check if it is working
             err = None
             try:
                 templater.templater.frommapfile(m)
             except Exception as inst:
                 err = stringutil.forcebytestr(inst)
                 p = None
             fm.condwrite(err, b'defaulttemplateerror', b" %s\n", err)
         else:
             p = None
         fm.condwrite(
             p, b'defaulttemplate', _(b"checking default template (%s)\n"), m
         )
         fm.condwrite(
             not m,
             b'defaulttemplatenotfound',
             _(b" template '%s' not found\n"),
             b"default",
         )
     if not p:
         problems += 1
     fm.condwrite(
         not p, b'', _(b" (templates seem to have been installed incorrectly)\n")
     )
 
     # editor
     editor = ui.geteditor()
     editor = util.expandpath(editor)
     editorbin = procutil.shellsplit(editor)[0]
     fm.write(b'editor', _(b"checking commit editor... (%s)\n"), editorbin)
     cmdpath = procutil.findexe(editorbin)
     fm.condwrite(
         not cmdpath and editor == b'vi',
         b'vinotfound',
         _(
             b" No commit editor set and can't find %s in PATH\n"
             b" (specify a commit editor in your configuration"
             b" file)\n"
         ),
         not cmdpath and editor == b'vi' and editorbin,
     )
     fm.condwrite(
         not cmdpath and editor != b'vi',
         b'editornotfound',
         _(
             b" Can't find editor '%s' in PATH\n"
             b" (specify a commit editor in your configuration"
             b" file)\n"
         ),
         not cmdpath and editorbin,
     )
     if not cmdpath and editor != b'vi':
         problems += 1
 
     # check username
     username = None
     err = None
     try:
         username = ui.username()
     except error.Abort as e:
         err = e.message
         problems += 1
 
     fm.condwrite(
         username, b'username', _(b"checking username (%s)\n"), username
     )
     fm.condwrite(
         err,
         b'usernameerror',
         _(
             b"checking username...\n %s\n"
             b" (specify a username in your configuration file)\n"
         ),
         err,
     )
 
     for name, mod in extensions.extensions():
         handler = getattr(mod, 'debuginstall', None)
         if handler is not None:
             problems += handler(ui, fm)
 
     fm.condwrite(not problems, b'', _(b"no problems detected\n"))
     if not problems:
         fm.data(problems=problems)
     fm.condwrite(
         problems,
         b'problems',
         _(b"%d problems detected, please check your install!\n"),
         problems,
     )
     fm.end()
 
     return problems
 
 
 @command(b'debugknown', [], _(b'REPO ID...'), norepo=True)
 def debugknown(ui, repopath, *ids, **opts):
     """test whether node ids are known to a repo
 
     Every ID must be a full-length hex node id string. Returns a list of 0s
     and 1s indicating unknown/known.
     """
     repo = hg.peer(ui, pycompat.byteskwargs(opts), repopath)
     if not repo.capable(b'known'):
         raise error.Abort(b"known() not supported by target repository")
     flags = repo.known([bin(s) for s in ids])
     ui.write(b"%s\n" % (b"".join([f and b"1" or b"0" for f in flags])))
 
 
 @command(b'debuglabelcomplete', [], _(b'LABEL...'))
 def debuglabelcomplete(ui, repo, *args):
     '''backwards compatibility with old bash completion scripts (DEPRECATED)'''
     debugnamecomplete(ui, repo, *args)
 
 
 @command(
     b'debuglocks',
     [
         (b'L', b'force-free-lock', None, _(b'free the store lock (DANGEROUS)')),
         (
             b'W',
             b'force-free-wlock',
             None,
             _(b'free the working state lock (DANGEROUS)'),
         ),
         (b's', b'set-lock', None, _(b'set the store lock until stopped')),
         (
             b'S',
             b'set-wlock',
             None,
             _(b'set the working state lock until stopped'),
         ),
     ],
     _(b'[OPTION]...'),
 )
 def debuglocks(ui, repo, **opts):
     """show or modify state of locks
 
     By default, this command will show which locks are held. This
     includes the user and process holding the lock, the amount of time
     the lock has been held, and the machine name where the process is
     running if it's not local.
 
     Locks protect the integrity of Mercurial's data, so should be
     treated with care. System crashes or other interruptions may cause
     locks to not be properly released, though Mercurial will usually
     detect and remove such stale locks automatically.
 
     However, detecting stale locks may not always be possible (for
     instance, on a shared filesystem). Removing locks may also be
     blocked by filesystem permissions.
 
     Setting a lock will prevent other commands from changing the data.
     The command will wait until an interruption (SIGINT, SIGTERM, ...) occurs.
     The set locks are removed when the command exits.
 
     Returns 0 if no locks are held.
 
     """
 
     if opts.get('force_free_lock'):
         repo.svfs.tryunlink(b'lock')
     if opts.get('force_free_wlock'):
         repo.vfs.tryunlink(b'wlock')
     if opts.get('force_free_lock') or opts.get('force_free_wlock'):
         return 0
 
     locks = []
     try:
         if opts.get('set_wlock'):
             try:
                 locks.append(repo.wlock(False))
             except error.LockHeld:
                 raise error.Abort(_(b'wlock is already held'))
         if opts.get('set_lock'):
             try:
                 locks.append(repo.lock(False))
             except error.LockHeld:
                 raise error.Abort(_(b'lock is already held'))
         if len(locks):
             try:
                 if ui.interactive():
                     prompt = _(b"ready to release the lock (y)? $$ &Yes")
                     ui.promptchoice(prompt)
                 else:
                     msg = b"%d locks held, waiting for signal\n"
                     msg %= len(locks)
                     ui.status(msg)
                     while True:  # XXX wait for a signal
                         time.sleep(0.1)
             except KeyboardInterrupt:
                 msg = b"signal-received releasing locks\n"
                 ui.status(msg)
             return 0
     finally:
         release(*locks)
 
     now = time.time()
     held = 0
 
     def report(vfs, name, method):
         # this causes stale locks to get reaped for more accurate reporting
         try:
             l = method(False)
         except error.LockHeld:
             l = None
 
         if l:
             l.release()
         else:
             try:
                 st = vfs.lstat(name)
                 age = now - st[stat.ST_MTIME]
                 user = util.username(st.st_uid)
                 locker = vfs.readlock(name)
                 if b":" in locker:
                     host, pid = locker.split(b':')
                     if host == socket.gethostname():
                         locker = b'user %s, process %s' % (user or b'None', pid)
                     else:
                         locker = b'user %s, process %s, host %s' % (
                             user or b'None',
                             pid,
                             host,
                         )
                 ui.writenoi18n(b"%-6s %s (%ds)\n" % (name + b":", locker, age))
                 return 1
             except FileNotFoundError:
                 pass
 
         ui.writenoi18n(b"%-6s free\n" % (name + b":"))
         return 0
 
     held += report(repo.svfs, b"lock", repo.lock)
     held += report(repo.vfs, b"wlock", repo.wlock)
 
     return held
 
 
 @command(
     b'debugmanifestfulltextcache',
     [
         (b'', b'clear', False, _(b'clear the cache')),
         (
             b'a',
             b'add',
             [],
             _(b'add the given manifest nodes to the cache'),
             _(b'NODE'),
         ),
     ],
     b'',
 )
 def debugmanifestfulltextcache(ui, repo, add=(), **opts):
     """show, clear or amend the contents of the manifest fulltext cache"""
 
     def getcache():
         r = repo.manifestlog.getstorage(b'')
         try:
             return r._fulltextcache
         except AttributeError:
             msg = _(
                 b"Current revlog implementation doesn't appear to have a "
                 b"manifest fulltext cache\n"
             )
             raise error.Abort(msg)
 
     if opts.get('clear'):
         with repo.wlock():
             cache = getcache()
             cache.clear(clear_persisted_data=True)
             return
 
     if add:
         with repo.wlock():
             m = repo.manifestlog
             store = m.getstorage(b'')
             for n in add:
                 try:
                     manifest = m[store.lookup(n)]
                 except error.LookupError as e:
                     raise error.Abort(
                         bytes(e), hint=b"Check your manifest node id"
                     )
                 manifest.read()  # stores revisision in cache too
             return
 
     cache = getcache()
     if not len(cache):
         ui.write(_(b'cache empty\n'))
     else:
         ui.write(
             _(
                 b'cache contains %d manifest entries, in order of most to '
                 b'least recent:\n'
             )
             % (len(cache),)
         )
         totalsize = 0
         for nodeid in cache:
             # Use cache.get to not update the LRU order
             data = cache.peek(nodeid)
             size = len(data)
             totalsize += size + 24  # 20 bytes nodeid, 4 bytes size
             ui.write(
                 _(b'id: %s, size %s\n') % (hex(nodeid), util.bytecount(size))
             )
         ondisk = cache._opener.stat(b'manifestfulltextcache').st_size
         ui.write(
             _(b'total cache data size %s, on-disk %s\n')
             % (util.bytecount(totalsize), util.bytecount(ondisk))
         )
 
 
 @command(b'debugmergestate', [] + cmdutil.templateopts, b'')
 def debugmergestate(ui, repo, *args, **opts):
     """print merge state
 
     Use --verbose to print out information about whether v1 or v2 merge state
     was chosen."""
 
     if ui.verbose:
         ms = mergestatemod.mergestate(repo)
 
         # sort so that reasonable information is on top
         v1records = ms._readrecordsv1()
         v2records = ms._readrecordsv2()
 
         if not v1records and not v2records:
             pass
         elif not v2records:
             ui.writenoi18n(b'no version 2 merge state\n')
         elif ms._v1v2match(v1records, v2records):
             ui.writenoi18n(b'v1 and v2 states match: using v2\n')
         else:
             ui.writenoi18n(b'v1 and v2 states mismatch: using v1\n')
 
     if not opts['template']:
         opts['template'] = (
             b'{if(commits, "", "no merge state found\n")}'
             b'{commits % "{name}{if(label, " ({label})")}: {node}\n"}'
             b'{files % "file: {path} (state \\"{state}\\")\n'
             b'{if(local_path, "'
             b'  local path: {local_path} (hash {local_key}, flags \\"{local_flags}\\")\n'
             b'  ancestor path: {ancestor_path} (node {ancestor_node})\n'
             b'  other path: {other_path} (node {other_node})\n'
             b'")}'
             b'{if(rename_side, "'
             b'  rename side: {rename_side}\n'
             b'  renamed path: {renamed_path}\n'
             b'")}'
             b'{extras % "  extra: {key} = {value}\n"}'
             b'"}'
             b'{extras % "extra: {file} ({key} = {value})\n"}'
         )
 
     ms = mergestatemod.mergestate.read(repo)
 
     fm = ui.formatter(b'debugmergestate', pycompat.byteskwargs(opts))
     fm.startitem()
 
     fm_commits = fm.nested(b'commits')
     if ms.active():
         for name, node, label_index in (
             (b'local', ms.local, 0),
             (b'other', ms.other, 1),
         ):
             fm_commits.startitem()
             fm_commits.data(name=name)
             fm_commits.data(node=hex(node))
             if ms._labels and len(ms._labels) > label_index:
                 fm_commits.data(label=ms._labels[label_index])
     fm_commits.end()
 
     fm_files = fm.nested(b'files')
     if ms.active():
         for f in ms:
             fm_files.startitem()
             fm_files.data(path=f)
             state = ms._state[f]
             fm_files.data(state=state[0])
             if state[0] in (
                 mergestatemod.MERGE_RECORD_UNRESOLVED,
                 mergestatemod.MERGE_RECORD_RESOLVED,
             ):
                 fm_files.data(local_key=state[1])
                 fm_files.data(local_path=state[2])
                 fm_files.data(ancestor_path=state[3])
                 fm_files.data(ancestor_node=state[4])
                 fm_files.data(other_path=state[5])
                 fm_files.data(other_node=state[6])
                 fm_files.data(local_flags=state[7])
             elif state[0] in (
                 mergestatemod.MERGE_RECORD_UNRESOLVED_PATH,
                 mergestatemod.MERGE_RECORD_RESOLVED_PATH,
             ):
                 fm_files.data(renamed_path=state[1])
                 fm_files.data(rename_side=state[2])
             fm_extras = fm_files.nested(b'extras')
             for k, v in sorted(ms.extras(f).items()):
                 fm_extras.startitem()
                 fm_extras.data(key=k)
                 fm_extras.data(value=v)
             fm_extras.end()
 
     fm_files.end()
 
     fm_extras = fm.nested(b'extras')
     for f, d in sorted(ms.allextras().items()):
         if f in ms:
             # If file is in mergestate, we have already processed it's extras
             continue
         for k, v in d.items():
             fm_extras.startitem()
             fm_extras.data(file=f)
             fm_extras.data(key=k)
             fm_extras.data(value=v)
     fm_extras.end()
 
     fm.end()
 
 
 @command(b'debugnamecomplete', [], _(b'NAME...'))
 def debugnamecomplete(ui, repo, *args):
     '''complete "names" - tags, open branch names, bookmark names'''
 
     names = set()
     # since we previously only listed open branches, we will handle that
     # specially (after this for loop)
     for name, ns in repo.names.items():
         if name != b'branches':
             names.update(ns.listnames(repo))
     names.update(
         tag
         for (tag, heads, tip, closed) in repo.branchmap().iterbranches()
         if not closed
     )
     completions = set()
     if not args:
         args = [b'']
     for a in args:
         completions.update(n for n in names if n.startswith(a))
     ui.write(b'\n'.join(sorted(completions)))
     ui.write(b'\n')
 
 
 @command(
     b'debugnodemap',
     (
         cmdutil.debugrevlogopts
         + [
             (
                 b'',
                 b'dump-new',
                 False,
                 _(b'write a (new) persistent binary nodemap on stdout'),
             ),
             (b'', b'dump-disk', False, _(b'dump on-disk data on stdout')),
             (
                 b'',
                 b'check',
                 False,
                 _(b'check that the data on disk data are correct.'),
             ),
             (
                 b'',
                 b'metadata',
                 False,
                 _(b'display the on disk meta data for the nodemap'),
             ),
         ]
     ),
     _(b'-c|-m|FILE'),
 )
 def debugnodemap(ui, repo, file_=None, **opts):
     """write and inspect on disk nodemap"""
     if opts.get('changelog') or opts.get('manifest') or opts.get('dir'):
         if file_ is not None:
             raise error.InputError(
                 _(b'cannot specify a file with other arguments')
             )
     elif file_ is None:
         opts['changelog'] = True
     r = cmdutil.openstorage(
         repo.unfiltered(), b'debugnodemap', file_, pycompat.byteskwargs(opts)
     )
     if isinstance(r, (manifest.manifestrevlog, filelog.filelog)):
         r = r._revlog
     if opts['dump_new']:
         if hasattr(r.index, "nodemap_data_all"):
             data = r.index.nodemap_data_all()
         else:
             data = nodemap.persistent_data(r.index)
         ui.write(data)
     elif opts['dump_disk']:
         nm_data = nodemap.persisted_data(r)
         if nm_data is not None:
             docket, data = nm_data
             ui.write(data[:])
     elif opts['check']:
         nm_data = nodemap.persisted_data(r)
         if nm_data is not None:
             docket, data = nm_data
             return nodemap.check_data(ui, r.index, data)
     elif opts['metadata']:
         nm_data = nodemap.persisted_data(r)
         if nm_data is not None:
             docket, data = nm_data
             ui.write((b"uid: %s\n") % docket.uid)
             ui.write((b"tip-rev: %d\n") % docket.tip_rev)
             ui.write((b"tip-node: %s\n") % hex(docket.tip_node))
             ui.write((b"data-length: %d\n") % docket.data_length)
             ui.write((b"data-unused: %d\n") % docket.data_unused)
             unused_perc = docket.data_unused * 100.0 / docket.data_length
             ui.write((b"data-unused: %2.3f%%\n") % unused_perc)
 
 
 @command(
     b'debugobsolete',
     [
         (b'', b'flags', 0, _(b'markers flag')),
         (
             b'',
             b'record-parents',
             False,
             _(b'record parent information for the precursor'),
         ),
         (b'r', b'rev', [], _(b'display markers relevant to REV')),
         (
             b'',
             b'exclusive',
             False,
             _(b'restrict display to markers only relevant to REV'),
         ),
         (b'', b'index', False, _(b'display index of the marker')),
         (b'', b'delete', [], _(b'delete markers specified by indices')),
     ]
     + cmdutil.commitopts2
     + cmdutil.formatteropts,
     _(b'[OBSOLETED [REPLACEMENT ...]]'),
 )
 def debugobsolete(ui, repo, precursor=None, *successors, **opts):
     """create arbitrary obsolete marker
 
     With no arguments, displays the list of obsolescence markers."""
 
     def parsenodeid(s):
         try:
             # We do not use revsingle/revrange functions here to accept
             # arbitrary node identifiers, possibly not present in the
             # local repository.
             n = bin(s)
             if len(n) != repo.nodeconstants.nodelen:
                 raise ValueError
             return n
         except ValueError:
             raise error.InputError(
                 b'changeset references must be full hexadecimal '
                 b'node identifiers'
             )
 
     if opts.get('delete'):
         indices = []
         for v in opts.get('delete'):
             try:
                 indices.append(int(v))
             except ValueError:
                 raise error.InputError(
                     _(b'invalid index value: %r') % v,
                     hint=_(b'use integers for indices'),
                 )
 
         if repo.currenttransaction():
             raise error.Abort(
                 _(b'cannot delete obsmarkers in the middle of transaction.')
             )
 
         with repo.lock():
             n = repair.deleteobsmarkers(repo.obsstore, indices)
             ui.write(_(b'deleted %i obsolescence markers\n') % n)
 
         return
 
     if precursor is not None:
         if opts['rev']:
             raise error.InputError(
                 b'cannot select revision when creating marker'
             )
         metadata = {}
         metadata[b'user'] = encoding.fromlocal(opts['user'] or ui.username())
         succs = tuple(parsenodeid(succ) for succ in successors)
         l = repo.lock()
         try:
             tr = repo.transaction(b'debugobsolete')
             try:
                 date = opts.get('date')
                 if date:
                     date = dateutil.parsedate(date)
                 else:
                     date = None
                 prec = parsenodeid(precursor)
                 parents = None
                 if opts['record_parents']:
                     if prec not in repo.unfiltered():
                         raise error.Abort(
                             b'cannot used --record-parents on '
                             b'unknown changesets'
                         )
                     parents = repo.unfiltered()[prec].parents()
                     parents = tuple(p.node() for p in parents)
                 repo.obsstore.create(
                     tr,
                     prec,
                     succs,
                     opts['flags'],
                     parents=parents,
                     date=date,
                     metadata=metadata,
                     ui=ui,
                 )
                 tr.close()
             except ValueError as exc:
                 raise error.Abort(
                     _(b'bad obsmarker input: %s') % stringutil.forcebytestr(exc)
                 )
             finally:
                 tr.release()
         finally:
             l.release()
     else:
         if opts['rev']:
             revs = logcmdutil.revrange(repo, opts['rev'])
             nodes = [repo[r].node() for r in revs]
             markers = list(
                 obsutil.getmarkers(
                     repo, nodes=nodes, exclusive=opts['exclusive']
                 )
             )
             markers.sort(key=lambda x: x._data)
         else:
             markers = obsutil.getmarkers(repo)
 
         markerstoiter = markers
         isrelevant = lambda m: True
         if opts.get('rev') and opts.get('index'):
             markerstoiter = obsutil.getmarkers(repo)
             markerset = set(markers)
             isrelevant = lambda m: m in markerset
 
         fm = ui.formatter(b'debugobsolete', pycompat.byteskwargs(opts))
         for i, m in enumerate(markerstoiter):
             if not isrelevant(m):
                 # marker can be irrelevant when we're iterating over a set
                 # of markers (markerstoiter) which is bigger than the set
                 # of markers we want to display (markers)
                 # this can happen if both --index and --rev options are
                 # provided and thus we need to iterate over all of the markers
                 # to get the correct indices, but only display the ones that
                 # are relevant to --rev value
                 continue
             fm.startitem()
             ind = i if opts.get('index') else None
             cmdutil.showmarker(fm, m, index=ind)
         fm.end()
 
 
 @command(
     b'debugp1copies',
     [(b'r', b'rev', b'', _(b'revision to debug'), _(b'REV'))],
     _(b'[-r REV]'),
 )
 def debugp1copies(ui, repo, **opts):
     """dump copy information compared to p1"""
 
     ctx = scmutil.revsingle(repo, opts.get('rev'), default=None)
     for dst, src in ctx.p1copies().items():
         ui.write(b'%s -> %s\n' % (src, dst))
 
 
 @command(
     b'debugp2copies',
     [(b'r', b'rev', b'', _(b'revision to debug'), _(b'REV'))],
     _(b'[-r REV]'),
 )
 def debugp2copies(ui, repo, **opts):
     """dump copy information compared to p2"""
 
     ctx = scmutil.revsingle(repo, opts.get('rev'), default=None)
     for dst, src in ctx.p2copies().items():
         ui.write(b'%s -> %s\n' % (src, dst))
 
 
 @command(
     b'debugpathcomplete',
     [
         (b'f', b'full', None, _(b'complete an entire path')),
         (b'n', b'normal', None, _(b'show only normal files')),
         (b'a', b'added', None, _(b'show only added files')),
         (b'r', b'removed', None, _(b'show only removed files')),
     ],
     _(b'FILESPEC...'),
 )
 def debugpathcomplete(ui, repo, *specs, **opts):
     """complete part or all of a tracked path
 
     This command supports shells that offer path name completion. It
     currently completes only files already known to the dirstate.
 
     Completion extends only to the next path segment unless
     --full is specified, in which case entire paths are used."""
 
     def complete(path, acceptable):
         dirstate = repo.dirstate
         spec = os.path.normpath(os.path.join(encoding.getcwd(), path))
         rootdir = repo.root + pycompat.ossep
         if spec != repo.root and not spec.startswith(rootdir):
             return [], []
         if os.path.isdir(spec):
             spec += b'/'
         spec = spec[len(rootdir) :]
         fixpaths = pycompat.ossep != b'/'
         if fixpaths:
             spec = spec.replace(pycompat.ossep, b'/')
         speclen = len(spec)
         fullpaths = opts['full']
         files, dirs = set(), set()
         adddir, addfile = dirs.add, files.add
         for f, st in dirstate.items():
             if f.startswith(spec) and st.state in acceptable:
                 if fixpaths:
                     f = f.replace(b'/', pycompat.ossep)
                 if fullpaths:
                     addfile(f)
                     continue
                 s = f.find(pycompat.ossep, speclen)
                 if s >= 0:
                     adddir(f[:s])
                 else:
                     addfile(f)
         return files, dirs
 
     acceptable = b''
     if opts['normal']:
         acceptable += b'nm'
     if opts['added']:
         acceptable += b'a'
     if opts['removed']:
         acceptable += b'r'
     cwd = repo.getcwd()
     if not specs:
         specs = [b'.']
 
     files, dirs = set(), set()
     for spec in specs:
         f, d = complete(spec, acceptable or b'nmar')
         files.update(f)
         dirs.update(d)
     files.update(dirs)
     ui.write(b'\n'.join(repo.pathto(p, cwd) for p in sorted(files)))
     ui.write(b'\n')
 
 
 @command(
     b'debugpathcopies',
     cmdutil.walkopts,
     b'hg debugpathcopies REV1 REV2 [FILE]',
     inferrepo=True,
 )
 def debugpathcopies(ui, repo, rev1, rev2, *pats, **opts):
     """show copies between two revisions"""
     ctx1 = scmutil.revsingle(repo, rev1)
     ctx2 = scmutil.revsingle(repo, rev2)
     m = scmutil.match(ctx1, pats, opts)
     for dst, src in sorted(copies.pathcopies(ctx1, ctx2, m).items()):
         ui.write(b'%s -> %s\n' % (src, dst))
 
 
 @command(b'debugpeer', [], _(b'PATH'), norepo=True)
 def debugpeer(ui, path):
     """establish a connection to a peer repository"""
     # Always enable peer request logging. Requires --debug to display
     # though.
     overrides = {
         (b'devel', b'debug.peer-request'): True,
     }
 
     with ui.configoverride(overrides):
         peer = hg.peer(ui, {}, path)
 
         try:
             local = peer.local() is not None
             canpush = peer.canpush()
 
             ui.write(_(b'url: %s\n') % peer.url())
             ui.write(_(b'local: %s\n') % (_(b'yes') if local else _(b'no')))
             ui.write(
                 _(b'pushable: %s\n') % (_(b'yes') if canpush else _(b'no'))
             )
         finally:
             peer.close()
 
 
 @command(
     b'debugpickmergetool',
     [
         (b'r', b'rev', b'', _(b'check for files in this revision'), _(b'REV')),
         (b'', b'changedelete', None, _(b'emulate merging change and delete')),
     ]
     + cmdutil.walkopts
     + cmdutil.mergetoolopts,
     _(b'[PATTERN]...'),
     inferrepo=True,
 )
 def debugpickmergetool(ui, repo, *pats, **opts):
     """examine which merge tool is chosen for specified file
 
     As described in :hg:`help merge-tools`, Mercurial examines
     configurations below in this order to decide which merge tool is
     chosen for specified file.
 
     1. ``--tool`` option
     2. ``HGMERGE`` environment variable
     3. configurations in ``merge-patterns`` section
     4. configuration of ``ui.merge``
     5. configurations in ``merge-tools`` section
     6. ``hgmerge`` tool (for historical reason only)
     7. default tool for fallback (``:merge`` or ``:prompt``)
 
     This command writes out examination result in the style below::
 
         FILE = MERGETOOL
 
     By default, all files known in the first parent context of the
     working directory are examined. Use file patterns and/or -I/-X
     options to limit target files. -r/--rev is also useful to examine
     files in another context without actual updating to it.
 
     With --debug, this command shows warning messages while matching
     against ``merge-patterns`` and so on, too. It is recommended to
     use this option with explicit file patterns and/or -I/-X options,
     because this option increases amount of output per file according
     to configurations in hgrc.
 
     With -v/--verbose, this command shows configurations below at
     first (only if specified).
 
     - ``--tool`` option
     - ``HGMERGE`` environment variable
     - configuration of ``ui.merge``
 
     If merge tool is chosen before matching against
     ``merge-patterns``, this command can't show any helpful
     information, even with --debug. In such case, information above is
     useful to know why a merge tool is chosen.
     """
     overrides = {}
     if opts['tool']:
         overrides[(b'ui', b'forcemerge')] = opts['tool']
         ui.notenoi18n(b'with --tool %r\n' % (pycompat.bytestr(opts['tool'])))
 
     with ui.configoverride(overrides, b'debugmergepatterns'):
         hgmerge = encoding.environ.get(b"HGMERGE")
         if hgmerge is not None:
             ui.notenoi18n(b'with HGMERGE=%r\n' % (pycompat.bytestr(hgmerge)))
         uimerge = ui.config(b"ui", b"merge")
         if uimerge:
             ui.notenoi18n(b'with ui.merge=%r\n' % (pycompat.bytestr(uimerge)))
 
         ctx = scmutil.revsingle(repo, opts.get('rev'))
         m = scmutil.match(ctx, pats, pycompat.byteskwargs(opts))
         changedelete = opts['changedelete']
         for path in ctx.walk(m):
             fctx = ctx[path]
             with ui.silent(
                 error=True
             ) if not ui.debugflag else util.nullcontextmanager():
                 tool, toolpath = filemerge._picktool(
                     repo,
                     ui,
                     path,
                     fctx.isbinary(),
                     b'l' in fctx.flags(),
                     changedelete,
                 )
             ui.write(b'%s = %s\n' % (path, tool))
 
 
 @command(b'debugpushkey', [], _(b'REPO NAMESPACE [KEY OLD NEW]'), norepo=True)
 def debugpushkey(ui, repopath, namespace, *keyinfo, **opts):
     """access the pushkey key/value protocol
 
     With two args, list the keys in the given namespace.
 
     With five args, set a key to new if it currently is set to old.
     Reports success or failure.
     """
 
     target = hg.peer(ui, {}, repopath)
     try:
         if keyinfo:
             key, old, new = keyinfo
             with target.commandexecutor() as e:
                 r = e.callcommand(
                     b'pushkey',
                     {
                         b'namespace': namespace,
                         b'key': key,
                         b'old': old,
                         b'new': new,
                     },
                 ).result()
 
             ui.status(pycompat.bytestr(r) + b'\n')
             return not r
         else:
             for k, v in sorted(target.listkeys(namespace).items()):
                 ui.write(
                     b"%s\t%s\n"
                     % (stringutil.escapestr(k), stringutil.escapestr(v))
                 )
     finally:
         target.close()
 
 
 @command(b'debugpvec', [], _(b'A B'))
 def debugpvec(ui, repo, a, b=None):
     ca = scmutil.revsingle(repo, a)
     cb = scmutil.revsingle(repo, b)
     pa = pvec.ctxpvec(ca)
     pb = pvec.ctxpvec(cb)
     if pa == pb:
         rel = b"="
     elif pa > pb:
         rel = b">"
     elif pa < pb:
         rel = b"<"
     elif pa | pb:
         rel = b"|"
     ui.write(_(b"a: %s\n") % pa)
     ui.write(_(b"b: %s\n") % pb)
     ui.write(_(b"depth(a): %d depth(b): %d\n") % (pa._depth, pb._depth))
     ui.write(
         _(b"delta: %d hdist: %d distance: %d relation: %s\n")
         % (
             abs(pa._depth - pb._depth),
             pvec._hamming(pa._vec, pb._vec),
             pa.distance(pb),
             rel,
         )
     )
 
 
 @command(
     b'debugrebuilddirstate|debugrebuildstate',
     [
         (b'r', b'rev', b'', _(b'revision to rebuild to'), _(b'REV')),
         (
             b'',
             b'minimal',
             None,
             _(
                 b'only rebuild files that are inconsistent with '
                 b'the working copy parent'
             ),
         ),
     ],
     _(b'[-r REV]'),
 )
 def debugrebuilddirstate(ui, repo, rev, **opts):
     """rebuild the dirstate as it would look like for the given revision
 
     If no revision is specified the first current parent will be used.
 
     The dirstate will be set to the files of the given revision.
     The actual working directory content or existing dirstate
     information such as adds or removes is not considered.
 
     ``minimal`` will only rebuild the dirstate status for files that claim to be
     tracked but are not in the parent manifest, or that exist in the parent
     manifest but are not in the dirstate. It will not change adds, removes, or
     modified files that are in the working copy parent.
 
     One use of this command is to make the next :hg:`status` invocation
     check the actual file content.
     """
     ctx = scmutil.revsingle(repo, rev)
     with repo.wlock():
         if repo.currenttransaction() is not None:
             msg = b'rebuild the dirstate outside of a transaction'
             raise error.ProgrammingError(msg)
         dirstate = repo.dirstate
         changedfiles = None
         # See command doc for what minimal does.
         if opts.get('minimal'):
             manifestfiles = set(ctx.manifest().keys())
             dirstatefiles = set(dirstate)
             manifestonly = manifestfiles - dirstatefiles
             dsonly = dirstatefiles - manifestfiles
             dsnotadded = {f for f in dsonly if not dirstate.get_entry(f).added}
             changedfiles = manifestonly | dsnotadded
 
         with dirstate.changing_parents(repo):
             dirstate.rebuild(ctx.node(), ctx.manifest(), changedfiles)
 
 
 @command(
     b'debugrebuildfncache',
     [
         (
             b'',
             b'only-data',
             False,
             _(b'only look for wrong .d files (much faster)'),
         )
     ],
     b'',
 )
 def debugrebuildfncache(ui, repo, **opts):
     """rebuild the fncache file"""
     repair.rebuildfncache(ui, repo, opts.get("only_data"))
 
 
 @command(
     b'debugrename',
     [(b'r', b'rev', b'', _(b'revision to debug'), _(b'REV'))],
     _(b'[-r REV] [FILE]...'),
 )
 def debugrename(ui, repo, *pats, **opts):
     """dump rename information"""
 
     ctx = scmutil.revsingle(repo, opts.get('rev'))
     m = scmutil.match(ctx, pats, pycompat.byteskwargs(opts))
     for abs in ctx.walk(m):
         fctx = ctx[abs]
         o = fctx.filelog().renamed(fctx.filenode())
         rel = repo.pathto(abs)
         if o:
             ui.write(_(b"%s renamed from %s:%s\n") % (rel, o[0], hex(o[1])))
         else:
             ui.write(_(b"%s not renamed\n") % rel)
 
 
 @command(b'debugrequires|debugrequirements', [], b'')
 def debugrequirements(ui, repo):
     """print the current repo requirements"""
     for r in sorted(repo.requirements):
         ui.write(b"%s\n" % r)
 
 
 @command(
     b'debugrevlog',
     cmdutil.debugrevlogopts + [(b'd', b'dump', False, _(b'dump index data'))],
     _(b'-c|-m|FILE'),
     optionalrepo=True,
 )
 def debugrevlog(ui, repo, file_=None, **opts):
     """show data and statistics about a revlog"""
     r = cmdutil.openrevlog(
         repo, b'debugrevlog', file_, pycompat.byteskwargs(opts)
     )
 
     if opts.get("dump"):
         revlog_debug.dump(ui, r)
     else:
         revlog_debug.debug_revlog(ui, r)
     return 0
 
 
 @command(
     b'debugrevlogindex',
     cmdutil.debugrevlogopts
     + [(b'f', b'format', 0, _(b'revlog format'), _(b'FORMAT'))],
     _(b'[-f FORMAT] -c|-m|FILE'),
     optionalrepo=True,
 )
 def debugrevlogindex(ui, repo, file_=None, **opts):
     """dump the contents of a revlog index"""
     r = cmdutil.openrevlog(
         repo, b'debugrevlogindex', file_, pycompat.byteskwargs(opts)
     )
     format = opts.get('format', 0)
     if format not in (0, 1):
         raise error.Abort(_(b"unknown format %d") % format)
 
     if ui.debugflag:
         shortfn = hex
     else:
         shortfn = short
 
     # There might not be anything in r, so have a sane default
     idlen = 12
     for i in r:
         idlen = len(shortfn(r.node(i)))
         break
 
     if format == 0:
         if ui.verbose:
             ui.writenoi18n(
                 b"   rev    offset  length linkrev %s %s p2\n"
                 % (b"nodeid".ljust(idlen), b"p1".ljust(idlen))
             )
         else:
             ui.writenoi18n(
                 b"   rev linkrev %s %s p2\n"
                 % (b"nodeid".ljust(idlen), b"p1".ljust(idlen))
             )
     elif format == 1:
         if ui.verbose:
             ui.writenoi18n(
                 (
                     b"   rev flag   offset   length     size   link     p1"
                     b"     p2 %s\n"
                 )
                 % b"nodeid".rjust(idlen)
             )
         else:
             ui.writenoi18n(
                 b"   rev flag     size   link     p1     p2 %s\n"
                 % b"nodeid".rjust(idlen)
             )
 
     for i in r:
         node = r.node(i)
         if format == 0:
             try:
                 pp = r.parents(node)
             except Exception:
                 pp = [repo.nullid, repo.nullid]
             if ui.verbose:
                 ui.write(
                     b"% 6d % 9d % 7d % 7d %s %s %s\n"
                     % (
                         i,
                         r.start(i),
                         r.length(i),
                         r.linkrev(i),
                         shortfn(node),
                         shortfn(pp[0]),
                         shortfn(pp[1]),
                     )
                 )
             else:
                 ui.write(
                     b"% 6d % 7d %s %s %s\n"
                     % (
                         i,
                         r.linkrev(i),
                         shortfn(node),
                         shortfn(pp[0]),
                         shortfn(pp[1]),
                     )
                 )
         elif format == 1:
             pr = r.parentrevs(i)
             if ui.verbose:
                 ui.write(
                     b"% 6d %04x % 8d % 8d % 8d % 6d % 6d % 6d %s\n"
                     % (
                         i,
                         r.flags(i),
                         r.start(i),
                         r.length(i),
                         r.rawsize(i),
                         r.linkrev(i),
                         pr[0],
                         pr[1],
                         shortfn(node),
                     )
                 )
             else:
                 ui.write(
                     b"% 6d %04x % 8d % 6d % 6d % 6d %s\n"
                     % (
                         i,
                         r.flags(i),
                         r.rawsize(i),
                         r.linkrev(i),
                         pr[0],
                         pr[1],
                         shortfn(node),
                     )
                 )
 
 
 @command(
     b'debugrevspec',
     [
         (
             b'',
             b'optimize',
             None,
             _(b'print parsed tree after optimizing (DEPRECATED)'),
         ),
         (
             b'',
             b'show-revs',
             True,
             _(b'print list of result revisions (default)'),
         ),
         (
             b's',
             b'show-set',
             None,
             _(b'print internal representation of result set'),
         ),
         (
             b'p',
             b'show-stage',
             [],
             _(b'print parsed tree at the given stage'),
             _(b'NAME'),
         ),
         (b'', b'no-optimized', False, _(b'evaluate tree without optimization')),
         (b'', b'verify-optimized', False, _(b'verify optimized result')),
     ],
     b'REVSPEC',
 )
 def debugrevspec(ui, repo, expr, **opts):
     """parse and apply a revision specification
 
     Use -p/--show-stage option to print the parsed tree at the given stages.
     Use -p all to print tree at every stage.
 
     Use --no-show-revs option with -s or -p to print only the set
     representation or the parsed tree respectively.
 
     Use --verify-optimized to compare the optimized result with the unoptimized
     one. Returns 1 if the optimized result differs.
     """
     aliases = ui.configitems(b'revsetalias')
     stages = [
         (b'parsed', lambda tree: tree),
         (
             b'expanded',
             lambda tree: revsetlang.expandaliases(tree, aliases, ui.warn),
         ),
         (b'concatenated', revsetlang.foldconcat),
         (b'analyzed', revsetlang.analyze),
         (b'optimized', revsetlang.optimize),
     ]
     if opts['no_optimized']:
         stages = stages[:-1]
     if opts['verify_optimized'] and opts['no_optimized']:
         raise error.Abort(
             _(b'cannot use --verify-optimized with --no-optimized')
         )
     stagenames = {n for n, f in stages}
 
     showalways = set()
     showchanged = set()
     if ui.verbose and not opts['show_stage']:
         # show parsed tree by --verbose (deprecated)
         showalways.add(b'parsed')
         showchanged.update([b'expanded', b'concatenated'])
         if opts['optimize']:
             showalways.add(b'optimized')
     if opts['show_stage'] and opts['optimize']:
         raise error.Abort(_(b'cannot use --optimize with --show-stage'))
     if opts['show_stage'] == [b'all']:
         showalways.update(stagenames)
     else:
         for n in opts['show_stage']:
             if n not in stagenames:
                 raise error.Abort(_(b'invalid stage name: %s') % n)
         showalways.update(opts['show_stage'])
 
     treebystage = {}
     printedtree = None
     tree = revsetlang.parse(expr, lookup=revset.lookupfn(repo))
     for n, f in stages:
         treebystage[n] = tree = f(tree)
         if n in showalways or (n in showchanged and tree != printedtree):
             if opts['show_stage'] or n != b'parsed':
                 ui.write(b"* %s:\n" % n)
             ui.write(revsetlang.prettyformat(tree), b"\n")
             printedtree = tree
 
     if opts['verify_optimized']:
         arevs = revset.makematcher(treebystage[b'analyzed'])(repo)
         brevs = revset.makematcher(treebystage[b'optimized'])(repo)
         if opts['show_set'] or (opts['show_set'] is None and ui.verbose):
             ui.writenoi18n(
                 b"* analyzed set:\n", stringutil.prettyrepr(arevs), b"\n"
             )
             ui.writenoi18n(
                 b"* optimized set:\n", stringutil.prettyrepr(brevs), b"\n"
             )
         arevs = list(arevs)
         brevs = list(brevs)
         if arevs == brevs:
             return 0
         ui.writenoi18n(b'--- analyzed\n', label=b'diff.file_a')
         ui.writenoi18n(b'+++ optimized\n', label=b'diff.file_b')
         sm = difflib.SequenceMatcher(None, arevs, brevs)
         for tag, alo, ahi, blo, bhi in sm.get_opcodes():
             if tag in ('delete', 'replace'):
                 for c in arevs[alo:ahi]:
                     ui.write(b'-%d\n' % c, label=b'diff.deleted')
             if tag in ('insert', 'replace'):
                 for c in brevs[blo:bhi]:
                     ui.write(b'+%d\n' % c, label=b'diff.inserted')
             if tag == 'equal':
                 for c in arevs[alo:ahi]:
                     ui.write(b' %d\n' % c)
         return 1
 
     func = revset.makematcher(tree)
     revs = func(repo)
     if opts['show_set'] or (opts['show_set'] is None and ui.verbose):
         ui.writenoi18n(b"* set:\n", stringutil.prettyrepr(revs), b"\n")
     if not opts['show_revs']:
         return
     for c in revs:
         ui.write(b"%d\n" % c)
 
 
 @command(
     b'debugserve',
     [
         (
             b'',
             b'sshstdio',
             False,
             _(b'run an SSH server bound to process handles'),
         ),
         (b'', b'logiofd', b'', _(b'file descriptor to log server I/O to')),
         (b'', b'logiofile', b'', _(b'file to log server I/O to')),
     ],
     b'',
 )
 def debugserve(ui, repo, **opts):
     """run a server with advanced settings
 
     This command is similar to :hg:`serve`. It exists partially as a
     workaround to the fact that ``hg serve --stdio`` must have specific
     arguments for security reasons.
     """
     if not opts['sshstdio']:
         raise error.Abort(_(b'only --sshstdio is currently supported'))
 
     logfh = None
 
     if opts['logiofd'] and opts['logiofile']:
         raise error.Abort(_(b'cannot use both --logiofd and --logiofile'))
 
     if opts['logiofd']:
         # Ideally we would be line buffered. But line buffering in binary
         # mode isn't supported and emits a warning in Python 3.8+. Disabling
         # buffering could have performance impacts. But since this isn't
         # performance critical code, it should be fine.
         try:
             logfh = os.fdopen(int(opts['logiofd']), 'ab', 0)
         except OSError as e:
             if e.errno != errno.ESPIPE:
                 raise
             # can't seek a pipe, so `ab` mode fails on py3
             logfh = os.fdopen(int(opts['logiofd']), 'wb', 0)
     elif opts['logiofile']:
         logfh = open(opts['logiofile'], b'ab', 0)
 
     s = wireprotoserver.sshserver(ui, repo, logfh=logfh)
     s.serve_forever()
 
 
 @command(b'debugsetparents', [], _(b'REV1 [REV2]'))
 def debugsetparents(ui, repo, rev1, rev2=None):
     """manually set the parents of the current working directory (DANGEROUS)
 
     This command is not what you are looking for and should not be used. Using
     this command will most certainly results in slight corruption of the file
     level histories withing your repository. DO NOT USE THIS COMMAND.
 
     The command update the p1 and p2 field in the dirstate, and not touching
     anything else. This useful for writing repository conversion tools, but
     should be used with extreme care. For example, neither the working
     directory nor the dirstate is updated, so file status may be incorrect
     after running this command. Only used if you are one of the few people that
     deeply unstand both conversion tools and file level histories. If you are
     reading this help, you are not one of this people (most of them sailed west
     from Mithlond anyway.
 
     So one last time DO NOT USE THIS COMMAND.
 
     Returns 0 on success.
     """
 
     node1 = scmutil.revsingle(repo, rev1).node()
     node2 = scmutil.revsingle(repo, rev2, b'null').node()
 
     with repo.wlock():
         repo.setparents(node1, node2)
 
 
 @command(b'debugsidedata', cmdutil.debugrevlogopts, _(b'-c|-m|FILE REV'))
 def debugsidedata(ui, repo, file_, rev=None, **opts):
     """dump the side data for a cl/manifest/file revision
 
     Use --verbose to dump the sidedata content."""
     if opts.get('changelog') or opts.get('manifest') or opts.get('dir'):
         if rev is not None:
             raise error.InputError(
                 _(b'cannot specify a revision with other arguments')
             )
         file_, rev = None, file_
     elif rev is None:
         raise error.InputError(_(b'please specify a revision'))
     r = cmdutil.openstorage(
         repo, b'debugdata', file_, pycompat.byteskwargs(opts)
     )
     r = getattr(r, '_revlog', r)
     try:
         sidedata = r.sidedata(r.lookup(rev))
     except KeyError:
         raise error.Abort(_(b'invalid revision identifier %s') % rev)
     if sidedata:
         sidedata = list(sidedata.items())
         sidedata.sort()
         ui.writenoi18n(b'%d sidedata entries\n' % len(sidedata))
         for key, value in sidedata:
             ui.writenoi18n(b' entry-%04o size %d\n' % (key, len(value)))
             if ui.verbose:
                 ui.writenoi18n(b'  %s\n' % stringutil.pprint(value))
 
 
 @command(b'debugssl', [], b'[SOURCE]', optionalrepo=True)
 def debugssl(ui, repo, source=None, **opts):
     """test a secure connection to a server
 
     This builds the certificate chain for the server on Windows, installing the
     missing intermediates and trusted root via Windows Update if necessary.  It
     does nothing on other platforms.
 
     If SOURCE is omitted, the 'default' path will be used.  If a URL is given,
     that server is used. See :hg:`help urls` for more information.
 
     If the update succeeds, retry the original operation.  Otherwise, the cause
     of the SSL error is likely another issue.
     """
     if not pycompat.iswindows:
         raise error.Abort(
             _(b'certificate chain building is only possible on Windows')
         )
 
     if not source:
         if not repo:
             raise error.Abort(
                 _(
                     b"there is no Mercurial repository here, and no "
                     b"server specified"
                 )
             )
         source = b"default"
 
     path = urlutil.get_unique_pull_path_obj(b'debugssl', ui, source)
     url = path.url
 
     defaultport = {b'https': 443, b'ssh': 22}
     if url.scheme in defaultport:
         try:
             addr = (url.host, int(url.port or defaultport[url.scheme]))
         except ValueError:
             raise error.Abort(_(b"malformed port number in URL"))
     else:
         raise error.Abort(_(b"only https and ssh connections are supported"))
 
     from . import win32
 
     s = ssl.wrap_socket(
         socket.socket(),
         ssl_version=ssl.PROTOCOL_TLS,
         cert_reqs=ssl.CERT_NONE,
         ca_certs=None,
     )
 
     try:
         s.connect(addr)
         cert = s.getpeercert(True)
 
         ui.status(_(b'checking the certificate chain for %s\n') % url.host)
 
         complete = win32.checkcertificatechain(cert, build=False)
 
         if not complete:
             ui.status(_(b'certificate chain is incomplete, updating... '))
 
             if not win32.checkcertificatechain(cert):
                 ui.status(_(b'failed.\n'))
             else:
                 ui.status(_(b'done.\n'))
         else:
             ui.status(_(b'full certificate chain is available\n'))
     finally:
         s.close()
 
 
 @command(
     b'debug::stable-tail-sort',
     [
         (
             b'T',
             b'template',
             b'{rev}\n',
             _(b'display with template'),
             _(b'TEMPLATE'),
         ),
     ],
     b'REV',
 )
 def debug_stable_tail_sort(ui, repo, revspec, template, **opts):
     """display the stable-tail sort of the ancestors of a given node"""
     rev = logcmdutil.revsingle(repo, revspec).rev()
     cl = repo.changelog
 
     displayer = logcmdutil.maketemplater(ui, repo, template)
     sorted_revs = stabletailsort._stable_tail_sort_naive(cl, rev)
     for ancestor_rev in sorted_revs:
         displayer.show(repo[ancestor_rev])
 
 
 @command(
     b'debug::stable-tail-sort-leaps',
     [
         (
             b'T',
             b'template',
             b'{rev}',
             _(b'display with template'),
             _(b'TEMPLATE'),
         ),
         (b's', b'specific', False, _(b'restrict to specific leaps')),
     ],
     b'REV',
 )
 def debug_stable_tail_sort_leaps(ui, repo, rspec, template, specific, **opts):
     """display the leaps in the stable-tail sort of a node, one per line"""
     rev = logcmdutil.revsingle(repo, rspec).rev()
 
     if specific:
         get_leaps = stabletailsort._find_specific_leaps_naive
     else:
         get_leaps = stabletailsort._find_all_leaps_naive
 
     displayer = logcmdutil.maketemplater(ui, repo, template)
     for source, target in get_leaps(repo.changelog, rev):
         displayer.show(repo[source])
         displayer.show(repo[target])
         ui.write(b'\n')
 
 
 @command(
     b"debugbackupbundle",
     [
         (
             b"",
             b"recover",
             b"",
             b"brings the specified changeset back into the repository",
         )
     ]
     + cmdutil.logopts,
     _(b"hg debugbackupbundle [--recover HASH]"),
 )
 def debugbackupbundle(ui, repo, *pats, **opts):
     """lists the changesets available in backup bundles
 
     Without any arguments, this command prints a list of the changesets in each
     backup bundle.
 
     --recover takes a changeset hash and unbundles the first bundle that
     contains that hash, which puts that changeset back in your repository.
 
     --verbose will print the entire commit message and the bundle path for that
     backup.
     """
     backups = list(
         filter(
             os.path.isfile, glob.glob(repo.vfs.join(b"strip-backup") + b"/*.hg")
         )
     )
     backups.sort(key=lambda x: os.path.getmtime(x), reverse=True)
 
     opts["bundle"] = b""
     opts["force"] = None
     limit = logcmdutil.getlimit(pycompat.byteskwargs(opts))
 
     def display(other, chlist, displayer):
         if opts.get("newest_first"):
             chlist.reverse()
         count = 0
         for n in chlist:
             if limit is not None and count >= limit:
                 break
             parents = [
                 True for p in other.changelog.parents(n) if p != repo.nullid
             ]
             if opts.get("no_merges") and len(parents) == 2:
                 continue
             count += 1
             displayer.show(other[n])
 
     recovernode = opts.get("recover")
     if recovernode:
         if scmutil.isrevsymbol(repo, recovernode):
             ui.warn(_(b"%s already exists in the repo\n") % recovernode)
             return
     elif backups:
         msg = _(
             b"Recover changesets using: hg debugbackupbundle --recover "
             b"<changeset hash>\n\nAvailable backup changesets:"
         )
         ui.status(msg, label=b"status.removed")
     else:
         ui.status(_(b"no backup changesets found\n"))
         return
 
     for backup in backups:
         # Much of this is copied from the hg incoming logic
         source = os.path.relpath(backup, encoding.getcwd())
         path = urlutil.get_unique_pull_path_obj(
             b'debugbackupbundle',
             ui,
             source,
         )
         try:
             other = hg.peer(repo, pycompat.byteskwargs(opts), path)
         except error.LookupError as ex:
             msg = _(b"\nwarning: unable to open bundle %s") % path.loc
             hint = _(b"\n(missing parent rev %s)\n") % short(ex.name)
             ui.warn(msg, hint=hint)
             continue
         branches = (path.branch, opts.get('branch', []))
         revs, checkout = hg.addbranchrevs(
             repo, other, branches, opts.get("rev")
         )
 
         if revs:
             revs = [other.lookup(rev) for rev in revs]
 
         with ui.silent():
             try:
                 other, chlist, cleanupfn = bundlerepo.getremotechanges(
                     ui, repo, other, revs, opts["bundle"], opts["force"]
                 )
             except error.LookupError:
                 continue
 
         try:
             if not chlist:
                 continue
             if recovernode:
                 with repo.lock(), repo.transaction(b"unbundle") as tr:
                     if scmutil.isrevsymbol(other, recovernode):
                         ui.status(_(b"Unbundling %s\n") % (recovernode))
                         f = hg.openpath(ui, path.loc)
                         gen = exchange.readbundle(ui, f, path.loc)
                         if isinstance(gen, bundle2.unbundle20):
                             bundle2.applybundle(
                                 repo,
                                 gen,
                                 tr,
                                 source=b"unbundle",
                                 url=b"bundle:" + path.loc,
                             )
                         else:
                             gen.apply(repo, b"unbundle", b"bundle:" + path.loc)
                         break
             else:
                 backupdate = encoding.strtolocal(
                     time.strftime(
                         "%a %H:%M, %Y-%m-%d",
                         time.localtime(os.path.getmtime(path.loc)),
                     )
                 )
                 ui.status(b"\n%s\n" % (backupdate.ljust(50)))
                 if ui.verbose:
                     ui.status(b"%s%s\n" % (b"bundle:".ljust(13), path.loc))
                 else:
                     opts[
                         "template"
                     ] = b"{label('status.modified', node|short)} {desc|firstline}\n"
                 displayer = logcmdutil.changesetdisplayer(
                     ui, other, pycompat.byteskwargs(opts), False
                 )
                 display(other, chlist, displayer)
                 displayer.close()
         finally:
             cleanupfn()
 
 
 @command(
     b'debugsub',
     [(b'r', b'rev', b'', _(b'revision to check'), _(b'REV'))],
     _(b'[-r REV] [REV]'),
 )
 def debugsub(ui, repo, rev=None):
     ctx = scmutil.revsingle(repo, rev, None)
     for k, v in sorted(ctx.substate.items()):
         ui.writenoi18n(b'path %s\n' % k)
         ui.writenoi18n(b' source   %s\n' % v[0])
         ui.writenoi18n(b' revision %s\n' % v[1])
 
 
 @command(
     b'debugshell',
     [
         (
             b'c',
             b'command',
             b'',
             _(b'program passed in as a string'),
             _(b'COMMAND'),
         )
     ],
     _(b'[-c COMMAND]'),
     optionalrepo=True,
 )
 def debugshell(ui, repo, **opts):
     """run an interactive Python interpreter
 
     The local namespace is provided with a reference to the ui and
     the repo instance (if available).
     """
     import code
 
     imported_objects = {
         'ui': ui,
         'repo': repo,
     }
 
     # py2exe disables initialization of the site module, which is responsible
     # for arranging for ``quit()`` to exit the interpreter.  Manually initialize
     # the stuff that site normally does here, so that the interpreter can be
     # quit in a consistent manner, whether run with pyoxidizer, exewrapper.c,
     # py.exe, or py2exe.
     if getattr(sys, "frozen", None) == 'console_exe':
         try:
             import site
 
             site.setcopyright()
             site.sethelper()
             site.setquit()
         except ImportError:
             site = None  # Keep PyCharm happy
 
     command = opts.get('command')
     if command:
         compiled = code.compile_command(encoding.strfromlocal(command))
         code.InteractiveInterpreter(locals=imported_objects).runcode(compiled)
         return
 
     code.interact(local=imported_objects)
 
 
 @command(
     b'debug-revlog-stats',
     [
         (b'c', b'changelog', None, _(b'Display changelog statistics')),
         (b'm', b'manifest', None, _(b'Display manifest statistics')),
         (b'f', b'filelogs', None, _(b'Display filelogs statistics')),
     ]
     + cmdutil.formatteropts,
 )
 def debug_revlog_stats(ui, repo, **opts):
     """display statistics about revlogs in the store"""
     changelog = opts["changelog"]
     manifest = opts["manifest"]
     filelogs = opts["filelogs"]
 
     if changelog is None and manifest is None and filelogs is None:
         changelog = True
         manifest = True
         filelogs = True
 
     repo = repo.unfiltered()
     fm = ui.formatter(b'debug-revlog-stats', pycompat.byteskwargs(opts))
     revlog_debug.debug_revlog_stats(repo, fm, changelog, manifest, filelogs)
     fm.end()
 
 
 @command(
     b'debugsuccessorssets',
     [(b'', b'closest', False, _(b'return closest successors sets only'))],
     _(b'[REV]'),
 )
 def debugsuccessorssets(ui, repo, *revs, **opts):
     """show set of successors for revision
 
     A successors set of changeset A is a consistent group of revisions that
     succeed A. It contains non-obsolete changesets only unless closests
     successors set is set.
 
     In most cases a changeset A has a single successors set containing a single
     successor (changeset A replaced by A').
 
     A changeset that is made obsolete with no successors are called "pruned".
     Such changesets have no successors sets at all.
 
     A changeset that has been "split" will have a successors set containing
     more than one successor.
 
     A changeset that has been rewritten in multiple different ways is called
     "divergent". Such changesets have multiple successor sets (each of which
     may also be split, i.e. have multiple successors).
 
     Results are displayed as follows::
 
         <rev1>
             <successors-1A>
         <rev2>
             <successors-2A>
             <successors-2B1> <successors-2B2> <successors-2B3>
 
     Here rev2 has two possible (i.e. divergent) successors sets. The first
     holds one element, whereas the second holds three (i.e. the changeset has
     been split).
     """
     # passed to successorssets caching computation from one call to another
     cache = {}
     ctx2str = bytes
     node2str = short
     for rev in logcmdutil.revrange(repo, revs):
         ctx = repo[rev]
         ui.write(b'%s\n' % ctx2str(ctx))
         for succsset in obsutil.successorssets(
             repo, ctx.node(), closest=opts['closest'], cache=cache
         ):
             if succsset:
                 ui.write(b'    ')
                 ui.write(node2str(succsset[0]))
                 for node in succsset[1:]:
                     ui.write(b' ')
                     ui.write(node2str(node))
             ui.write(b'\n')
 
 
 @command(b'debugtagscache', [])
 def debugtagscache(ui, repo):
     """display the contents of .hg/cache/hgtagsfnodes1"""
     cache = tagsmod.hgtagsfnodescache(repo.unfiltered())
     flog = repo.file(b'.hgtags')
     for r in repo:
         node = repo[r].node()
         tagsnode = cache.getfnode(node, computemissing=False)
         if tagsnode:
             tagsnodedisplay = hex(tagsnode)
             if not flog.hasnode(tagsnode):
                 tagsnodedisplay += b' (unknown node)'
         elif tagsnode is None:
             tagsnodedisplay = b'missing'
         else:
             tagsnodedisplay = b'invalid'
 
         ui.write(b'%d %s %s\n' % (r, hex(node), tagsnodedisplay))
 
 
 @command(
     b'debugtemplate',
     [
         (b'r', b'rev', [], _(b'apply template on changesets'), _(b'REV')),
         (b'D', b'define', [], _(b'define template keyword'), _(b'KEY=VALUE')),
     ],
     _(b'[-r REV]... [-D KEY=VALUE]... TEMPLATE'),
     optionalrepo=True,
 )
 def debugtemplate(ui, repo, tmpl, **opts):
     """parse and apply a template
 
     If -r/--rev is given, the template is processed as a log template and
     applied to the given changesets. Otherwise, it is processed as a generic
     template.
 
     Use --verbose to print the parsed tree.
     """
     revs = None
     if opts['rev']:
         if repo is None:
             raise error.RepoError(
                 _(b'there is no Mercurial repository here (.hg not found)')
             )
         revs = logcmdutil.revrange(repo, opts['rev'])
 
     props = {}
     for d in opts['define']:
         try:
             k, v = (e.strip() for e in d.split(b'=', 1))
             if not k or k == b'ui':
                 raise ValueError
             props[k] = v
         except ValueError:
             raise error.Abort(_(b'malformed keyword definition: %s') % d)
 
     if ui.verbose:
         aliases = ui.configitems(b'templatealias')
         tree = templater.parse(tmpl)
         ui.note(templater.prettyformat(tree), b'\n')
         newtree = templater.expandaliases(tree, aliases)
         if newtree != tree:
             ui.notenoi18n(
                 b"* expanded:\n", templater.prettyformat(newtree), b'\n'
             )
 
     if revs is None:
         tres = formatter.templateresources(ui, repo)
         t = formatter.maketemplater(ui, tmpl, resources=tres)
         if ui.verbose:
             kwds, funcs = t.symbolsuseddefault()
             ui.writenoi18n(b"* keywords: %s\n" % b', '.join(sorted(kwds)))
             ui.writenoi18n(b"* functions: %s\n" % b', '.join(sorted(funcs)))
         ui.write(t.renderdefault(props))
     else:
         displayer = logcmdutil.maketemplater(ui, repo, tmpl)
         if ui.verbose:
             kwds, funcs = displayer.t.symbolsuseddefault()
             ui.writenoi18n(b"* keywords: %s\n" % b', '.join(sorted(kwds)))
             ui.writenoi18n(b"* functions: %s\n" % b', '.join(sorted(funcs)))
         for r in revs:
             displayer.show(repo[r], **pycompat.strkwargs(props))
         displayer.close()
 
 
 @command(
     b'debuguigetpass',
     [
         (b'p', b'prompt', b'', _(b'prompt text'), _(b'TEXT')),
     ],
     _(b'[-p TEXT]'),
     norepo=True,
 )
 def debuguigetpass(ui, prompt=b''):
     """show prompt to type password"""
     r = ui.getpass(prompt)
     if r is None:
         r = b"<default response>"
     ui.writenoi18n(b'response: %s\n' % r)
 
 
 @command(
     b'debuguiprompt',
     [
         (b'p', b'prompt', b'', _(b'prompt text'), _(b'TEXT')),
     ],
     _(b'[-p TEXT]'),
     norepo=True,
 )
 def debuguiprompt(ui, prompt=b''):
     """show plain prompt"""
     r = ui.prompt(prompt)
     ui.writenoi18n(b'response: %s\n' % r)
 
 
 @command(b'debugupdatecaches', [])
 def debugupdatecaches(ui, repo, *pats, **opts):
     """warm all known caches in the repository"""
     with repo.wlock(), repo.lock():
         repo.updatecaches(caches=repository.CACHES_ALL)
 
 
 @command(
     b'debugupgraderepo',
     [
         (
             b'o',
             b'optimize',
             [],
             _(b'extra optimization to perform'),
             _(b'NAME'),
         ),
         (b'', b'run', False, _(b'performs an upgrade')),
         (b'', b'backup', True, _(b'keep the old repository content around')),
         (b'', b'changelog', None, _(b'select the changelog for upgrade')),
         (b'', b'manifest', None, _(b'select the manifest for upgrade')),
         (b'', b'filelogs', None, _(b'select all filelogs for upgrade')),
     ],
 )
 def debugupgraderepo(ui, repo, run=False, optimize=None, backup=True, **opts):
     """upgrade a repository to use different features
 
     If no arguments are specified, the repository is evaluated for upgrade
     and a list of problems and potential optimizations is printed.
 
     With ``--run``, a repository upgrade is performed. Behavior of the upgrade
     can be influenced via additional arguments. More details will be provided
     by the command output when run without ``--run``.
 
     During the upgrade, the repository will be locked and no writes will be
     allowed.
 
     At the end of the upgrade, the repository may not be readable while new
     repository data is swapped in. This window will be as long as it takes to
     rename some directories inside the ``.hg`` directory. On most machines, this
     should complete almost instantaneously and the chances of a consumer being
     unable to access the repository should be low.
 
     By default, all revlogs will be upgraded. You can restrict this using flags
     such as `--manifest`:
 
       * `--manifest`: only optimize the manifest
       * `--no-manifest`: optimize all revlog but the manifest
       * `--changelog`: optimize the changelog only
       * `--no-changelog --no-manifest`: optimize filelogs only
       * `--filelogs`: optimize the filelogs only
       * `--no-changelog --no-manifest --no-filelogs`: skip all revlog optimizations
     """
     return upgrade.upgraderepo(
         ui, repo, run=run, optimize=set(optimize), backup=backup, **opts
     )
 
 
 @command(
     b'debugwalk', cmdutil.walkopts, _(b'[OPTION]... [FILE]...'), inferrepo=True
 )
 def debugwalk(ui, repo, *pats, **opts):
     """show how files match on given patterns"""
     m = scmutil.match(repo[None], pats, pycompat.byteskwargs(opts))
     if ui.verbose:
         ui.writenoi18n(b'* matcher:\n', stringutil.prettyrepr(m), b'\n')
     items = list(repo[None].walk(m))
     if not items:
         return
     f = lambda fn: fn
     if ui.configbool(b'ui', b'slash') and pycompat.ossep != b'/':
         f = lambda fn: util.normpath(fn)
     fmt = b'f  %%-%ds  %%-%ds  %%s' % (
         max([len(abs) for abs in items]),
         max([len(repo.pathto(abs)) for abs in items]),
     )
     for abs in items:
         line = fmt % (
             abs,
             f(repo.pathto(abs)),
             m.exact(abs) and b'exact' or b'',
         )
         ui.write(b"%s\n" % line.rstrip())
 
 
 @command(b'debugwhyunstable', [], _(b'REV'))
 def debugwhyunstable(ui, repo, rev):
     """explain instabilities of a changeset"""
     for entry in obsutil.whyunstable(repo, scmutil.revsingle(repo, rev)):
         dnodes = b''
         if entry.get(b'divergentnodes'):
             dnodes = (
                 b' '.join(
                     b'%s (%s)' % (ctx.hex(), ctx.phasestr())
                     for ctx in entry[b'divergentnodes']
                 )
                 + b' '
             )
         ui.write(
             b'%s: %s%s %s\n'
             % (entry[b'instability'], dnodes, entry[b'reason'], entry[b'node'])
         )
 
 
 @command(
     b'debugwireargs',
     [
         (b'', b'three', b'', b'three'),
         (b'', b'four', b'', b'four'),
         (b'', b'five', b'', b'five'),
     ]
     + cmdutil.remoteopts,
     _(b'REPO [OPTIONS]... [ONE [TWO]]'),
     norepo=True,
 )
 def debugwireargs(ui, repopath, *vals, **opts):
     repo = hg.peer(ui, pycompat.byteskwargs(opts), repopath)
     try:
         for opt in cmdutil.remoteopts:
             del opts[pycompat.sysstr(opt[1])]
         args = {}
         for k, v in opts.items():
             if v:
                 args[k] = v
 
         # run twice to check that we don't mess up the stream for the next command
         res1 = repo.debugwireargs(*vals, **args)
         res2 = repo.debugwireargs(*vals, **args)
         ui.write(b"%s\n" % res1)
         if res1 != res2:
             ui.warn(b"%s\n" % res2)
     finally:
         repo.close()
 
 
 def _parsewirelangblocks(fh):
     activeaction = None
     blocklines = []
     lastindent = 0
 
     for line in fh:
         line = line.rstrip()
         if not line:
             continue
 
         if line.startswith(b'#'):
             continue
 
         if not line.startswith(b' '):
             # New block. Flush previous one.
             if activeaction:
                 yield activeaction, blocklines
 
             activeaction = line
             blocklines = []
             lastindent = 0
             continue
 
         # Else we start with an indent.
 
         if not activeaction:
             raise error.Abort(_(b'indented line outside of block'))
 
         indent = len(line) - len(line.lstrip())
 
         # If this line is indented more than the last line, concatenate it.
         if indent > lastindent and blocklines:
             blocklines[-1] += line.lstrip()
         else:
             blocklines.append(line)
             lastindent = indent
 
     # Flush last block.
     if activeaction:
         yield activeaction, blocklines
 
 
 @command(
     b'debugwireproto',
     [
         (b'', b'localssh', False, _(b'start an SSH server for this repo')),
         (b'', b'peer', b'', _(b'construct a specific version of the peer')),
         (
             b'',
             b'noreadstderr',
             False,
             _(b'do not read from stderr of the remote'),
         ),
         (
             b'',
             b'nologhandshake',
             False,
             _(b'do not log I/O related to the peer handshake'),
         ),
     ]
     + cmdutil.remoteopts,
     _(b'[PATH]'),
     optionalrepo=True,
 )
 def debugwireproto(ui, repo, path=None, **opts):
     """send wire protocol commands to a server
 
     This command can be used to issue wire protocol commands to remote
     peers and to debug the raw data being exchanged.
 
     ``--localssh`` will start an SSH server against the current repository
     and connect to that. By default, the connection will perform a handshake
     and establish an appropriate peer instance.
 
     ``--peer`` can be used to bypass the handshake protocol and construct a
     peer instance using the specified class type. Valid values are ``raw``,
     ``ssh1``. ``raw`` instances only allow sending raw data payloads and
     don't support higher-level command actions.
 
     ``--noreadstderr`` can be used to disable automatic reading from stderr
     of the peer (for SSH connections only). Disabling automatic reading of
     stderr is useful for making output more deterministic.
 
     Commands are issued via a mini language which is specified via stdin.
     The language consists of individual actions to perform. An action is
     defined by a block. A block is defined as a line with no leading
     space followed by 0 or more lines with leading space. Blocks are
     effectively a high-level command with additional metadata.
 
     Lines beginning with ``#`` are ignored.
 
     The following sections denote available actions.
 
     raw
     ---
 
     Send raw data to the server.
 
     The block payload contains the raw data to send as one atomic send
     operation. The data may not actually be delivered in a single system
     call: it depends on the abilities of the transport being used.
 
     Each line in the block is de-indented and concatenated. Then, that
     value is evaluated as a Python b'' literal. This allows the use of
     backslash escaping, etc.
 
     raw+
     ----
 
     Behaves like ``raw`` except flushes output afterwards.
 
     command <X>
     -----------
 
     Send a request to run a named command, whose name follows the ``command``
     string.
 
     Arguments to the command are defined as lines in this block. The format of
     each line is ``<key> <value>``. e.g.::
 
        command listkeys
            namespace bookmarks
 
     If the value begins with ``eval:``, it will be interpreted as a Python
     literal expression. Otherwise values are interpreted as Python b'' literals.
     This allows sending complex types and encoding special byte sequences via
     backslash escaping.
 
     The following arguments have special meaning:
 
     ``PUSHFILE``
         When defined, the *push* mechanism of the peer will be used instead
         of the static request-response mechanism and the content of the
         file specified in the value of this argument will be sent as the
         command payload.
 
         This can be used to submit a local bundle file to the remote.
 
     batchbegin
     ----------
 
     Instruct the peer to begin a batched send.
 
     All ``command`` blocks are queued for execution until the next
     ``batchsubmit`` block.
 
     batchsubmit
     -----------
 
     Submit previously queued ``command`` blocks as a batch request.
 
     This action MUST be paired with a ``batchbegin`` action.
 
     httprequest <method> <path>
     ---------------------------
 
     (HTTP peer only)
 
     Send an HTTP request to the peer.
 
     The HTTP request line follows the ``httprequest`` action. e.g. ``GET /foo``.
 
     Arguments of the form ``<key>: <value>`` are interpreted as HTTP request
     headers to add to the request. e.g. ``Accept: foo``.
 
     The following arguments are special:
 
     ``BODYFILE``
         The content of the file defined as the value to this argument will be
         transferred verbatim as the HTTP request body.
 
     ``frame <type> <flags> <payload>``
         Send a unified protocol frame as part of the request body.
 
         All frames will be collected and sent as the body to the HTTP
         request.
 
     close
     -----
 
     Close the connection to the server.
 
     flush
     -----
 
     Flush data written to the server.
 
     readavailable
     -------------
 
     Close the write end of the connection and read all available data from
     the server.
 
     If the connection to the server encompasses multiple pipes, we poll both
     pipes and read available data.
 
     readline
     --------
 
     Read a line of output from the server. If there are multiple output
     pipes, reads only the main pipe.
 
     ereadline
     ---------
 
     Like ``readline``, but read from the stderr pipe, if available.
 
     read <X>
     --------
 
     ``read()`` N bytes from the server's main output pipe.
 
     eread <X>
     ---------
 
     ``read()`` N bytes from the server's stderr pipe, if available.
 
     Specifying Unified Frame-Based Protocol Frames
     ----------------------------------------------
 
     It is possible to emit a *Unified Frame-Based Protocol* by using special
     syntax.
 
     A frame is composed as a type, flags, and payload. These can be parsed
     from a string of the form:
 
        <request-id> <stream-id> <stream-flags> <type> <flags> <payload>
 
     ``request-id`` and ``stream-id`` are integers defining the request and
     stream identifiers.
 
     ``type`` can be an integer value for the frame type or the string name
     of the type. The strings are defined in ``wireprotoframing.py``. e.g.
     ``command-name``.
 
     ``stream-flags`` and ``flags`` are a ``|`` delimited list of flag
     components. Each component (and there can be just one) can be an integer
     or a flag name for stream flags or frame flags, respectively. Values are
     resolved to integers and then bitwise OR'd together.
 
     ``payload`` represents the raw frame payload. If it begins with
     ``cbor:``, the following string is evaluated as Python code and the
     resulting object is fed into a CBOR encoder. Otherwise it is interpreted
     as a Python byte string literal.
     """
     if opts['localssh'] and not repo:
         raise error.Abort(_(b'--localssh requires a repository'))
 
     if opts['peer'] and opts['peer'] not in (
         b'raw',
         b'ssh1',
     ):
         raise error.Abort(
             _(b'invalid value for --peer'),
             hint=_(b'valid values are "raw" and "ssh1"'),
         )
 
     if path and opts['localssh']:
         raise error.Abort(_(b'cannot specify --localssh with an explicit path'))
 
     if ui.interactive():
         ui.write(_(b'(waiting for commands on stdin)\n'))
 
     blocks = list(_parsewirelangblocks(ui.fin))
 
     proc = None
     stdin = None
     stdout = None
     stderr = None
     opener = None
 
     if opts['localssh']:
         # We start the SSH server in its own process so there is process
         # separation. This prevents a whole class of potential bugs around
         # shared state from interfering with server operation.
         args = procutil.hgcmd() + [
             b'-R',
             repo.root,
             b'debugserve',
             b'--sshstdio',
         ]
         proc = subprocess.Popen(
             pycompat.rapply(procutil.tonativestr, args),
             stdin=subprocess.PIPE,
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
             bufsize=0,
         )
 
         stdin = proc.stdin
         stdout = proc.stdout
         stderr = proc.stderr
 
         # We turn the pipes into observers so we can log I/O.
         if ui.verbose or opts['peer'] == b'raw':
             stdin = util.makeloggingfileobject(
                 ui, proc.stdin, b'i', logdata=True
             )
             stdout = util.makeloggingfileobject(
                 ui, proc.stdout, b'o', logdata=True
             )
             stderr = util.makeloggingfileobject(
                 ui, proc.stderr, b'e', logdata=True
             )
 
         # --localssh also implies the peer connection settings.
 
         url = b'ssh://localserver'
         autoreadstderr = not opts['noreadstderr']
 
         if opts['peer'] == b'ssh1':
             ui.write(_(b'creating ssh peer for wire protocol version 1\n'))
             peer = sshpeer.sshv1peer(
                 ui,
                 url,
                 proc,
                 stdin,
                 stdout,
                 stderr,
                 None,
                 autoreadstderr=autoreadstderr,
             )
         elif opts['peer'] == b'raw':
             ui.write(_(b'using raw connection to peer\n'))
             peer = None
         else:
             ui.write(_(b'creating ssh peer from handshake results\n'))
             peer = sshpeer._make_peer(
                 ui,
                 url,
                 proc,
                 stdin,
                 stdout,
                 stderr,
                 autoreadstderr=autoreadstderr,
             )
 
     elif path:
         # We bypass hg.peer() so we can proxy the sockets.
         # TODO consider not doing this because we skip
         # ``hg.wirepeersetupfuncs`` and potentially other useful functionality.
         u = urlutil.url(path)
         if u.scheme != b'http':
             raise error.Abort(_(b'only http:// paths are currently supported'))
 
         url, authinfo = u.authinfo()
         openerargs = {
             'useragent': b'Mercurial debugwireproto',
         }
 
         # Turn pipes/sockets into observers so we can log I/O.
         if ui.verbose:
             openerargs.update(
                 {
                     'loggingfh': ui,
                     'loggingname': b's',
                     'loggingopts': {
                         'logdata': True,
                         'logdataapis': False,
                     },
                 }
             )
 
         if ui.debugflag:
             openerargs['loggingopts']['logdataapis'] = True
 
         # Don't send default headers when in raw mode. This allows us to
         # bypass most of the behavior of our URL handling code so we can
         # have near complete control over what's sent on the wire.
         if opts['peer'] == b'raw':
             openerargs['sendaccept'] = False
 
         opener = urlmod.opener(ui, authinfo, **openerargs)
 
         if opts['peer'] == b'raw':
             ui.write(_(b'using raw connection to peer\n'))
             peer = None
         elif opts['peer']:
             raise error.Abort(
                 _(b'--peer %s not supported with HTTP peers') % opts['peer']
             )
         else:
             peer_path = urlutil.try_path(ui, path)
             peer = httppeer._make_peer(ui, peer_path, opener=opener)
 
         # We /could/ populate stdin/stdout with sock.makefile()...
     else:
         raise error.Abort(_(b'unsupported connection configuration'))
 
     batchedcommands = None
 
     # Now perform actions based on the parsed wire language instructions.
     for action, lines in blocks:
         if action in (b'raw', b'raw+'):
             if not stdin:
                 raise error.Abort(_(b'cannot call raw/raw+ on this peer'))
 
             # Concatenate the data together.
             data = b''.join(l.lstrip() for l in lines)
             data = stringutil.unescapestr(data)
             stdin.write(data)
 
             if action == b'raw+':
                 stdin.flush()
         elif action == b'flush':
             if not stdin:
                 raise error.Abort(_(b'cannot call flush on this peer'))
             stdin.flush()
         elif action.startswith(b'command'):
             if not peer:
                 raise error.Abort(
                     _(
                         b'cannot send commands unless peer instance '
                         b'is available'
                     )
                 )
 
             command = action.split(b' ', 1)[1]
 
             args = {}
             for line in lines:
                 # We need to allow empty values.
                 fields = line.lstrip().split(b' ', 1)
                 if len(fields) == 1:
                     key = fields[0]
                     value = b''
                 else:
                     key, value = fields
 
                 if value.startswith(b'eval:'):
                     value = stringutil.evalpythonliteral(value[5:])
                 else:
                     value = stringutil.unescapestr(value)
 
                 args[key] = value
 
             if batchedcommands is not None:
                 batchedcommands.append((command, args))
                 continue
 
             ui.status(_(b'sending %s command\n') % command)
 
             if b'PUSHFILE' in args:
                 with open(args[b'PUSHFILE'], 'rb') as fh:
                     del args[b'PUSHFILE']
                     res, output = peer._callpush(
                         command, fh, **pycompat.strkwargs(args)
                     )
                     ui.status(_(b'result: %s\n') % stringutil.escapestr(res))
                     ui.status(
                         _(b'remote output: %s\n') % stringutil.escapestr(output)
                     )
             else:
                 with peer.commandexecutor() as e:
                     res = e.callcommand(command, args).result()
 
                 ui.status(
                     _(b'response: %s\n')
                     % stringutil.pprint(res, bprefix=True, indent=2)
                 )
 
         elif action == b'batchbegin':
             if batchedcommands is not None:
                 raise error.Abort(_(b'nested batchbegin not allowed'))
 
             batchedcommands = []
         elif action == b'batchsubmit':
             # There is a batching API we could go through. But it would be
             # difficult to normalize requests into function calls. It is easier
             # to bypass this layer and normalize to commands + args.
             ui.status(
                 _(b'sending batch with %d sub-commands\n')
                 % len(batchedcommands)
             )
             assert peer is not None
             for i, chunk in enumerate(peer._submitbatch(batchedcommands)):
                 ui.status(
                     _(b'response #%d: %s\n') % (i, stringutil.escapestr(chunk))
                 )
 
             batchedcommands = None
 
         elif action.startswith(b'httprequest '):
             if not opener:
                 raise error.Abort(
                     _(b'cannot use httprequest without an HTTP peer')
                 )
 
             request = action.split(b' ', 2)
             if len(request) != 3:
                 raise error.Abort(
                     _(
                         b'invalid httprequest: expected format is '
                         b'"httprequest <method> <path>'
                     )
                 )
 
             method, httppath = request[1:]
             headers = {}
             body = None
             frames = []
             for line in lines:
                 line = line.lstrip()
                 m = re.match(b'^([a-zA-Z0-9_-]+): (.*)$', line)
                 if m:
                     # Headers need to use native strings.
                     key = pycompat.strurl(m.group(1))
                     value = pycompat.strurl(m.group(2))
                     headers[key] = value
                     continue
 
                 if line.startswith(b'BODYFILE '):
                     with open(line.split(b' ', 1), b'rb') as fh:
                         body = fh.read()
                 elif line.startswith(b'frame '):
                     frame = wireprotoframing.makeframefromhumanstring(
                         line[len(b'frame ') :]
                     )
 
                     frames.append(frame)
                 else:
                     raise error.Abort(
                         _(b'unknown argument to httprequest: %s') % line
                     )
 
             url = path + httppath
 
             if frames:
                 body = b''.join(bytes(f) for f in frames)
 
             req = urlmod.urlreq.request(pycompat.strurl(url), body, headers)
 
             # urllib.Request insists on using has_data() as a proxy for
             # determining the request method. Override that to use our
             # explicitly requested method.
             req.get_method = lambda: pycompat.sysstr(method)
 
             try:
                 res = opener.open(req)
                 body = res.read()
             except util.urlerr.urlerror as e:
                 # read() method must be called, but only exists in Python 2
                 getattr(e, 'read', lambda: None)()
                 continue
 
             ct = res.headers.get('Content-Type')
             if ct == 'application/mercurial-cbor':
                 ui.write(
                     _(b'cbor> %s\n')
                     % stringutil.pprint(
                         cborutil.decodeall(body), bprefix=True, indent=2
                     )
                 )
 
         elif action == b'close':
             assert peer is not None
             peer.close()
         elif action == b'readavailable':
             if not stdout or not stderr:
                 raise error.Abort(
                     _(b'readavailable not available on this peer')
                 )
 
             stdin.close()
             stdout.read()
             stderr.read()
 
         elif action == b'readline':
             if not stdout:
                 raise error.Abort(_(b'readline not available on this peer'))
             stdout.readline()
         elif action == b'ereadline':
             if not stderr:
                 raise error.Abort(_(b'ereadline not available on this peer'))
             stderr.readline()
         elif action.startswith(b'read '):
             count = int(action.split(b' ', 1)[1])
             if not stdout:
                 raise error.Abort(_(b'read not available on this peer'))
             stdout.read(count)
         elif action.startswith(b'eread '):
             count = int(action.split(b' ', 1)[1])
             if not stderr:
                 raise error.Abort(_(b'eread not available on this peer'))
             stderr.read(count)
         else:
             raise error.Abort(_(b'unknown action: %s') % action)
 
     if batchedcommands is not None:
         raise error.Abort(_(b'unclosed "batchbegin" request'))
 
     if peer:
         peer.close()
 
     if proc:
         proc.kill()

tests/bundles/test-revlog-diff-relative-to-nullrev.sh

@@ -1,41 +1,41 b''
 #!/bin/bash
 #
 # Make sure to patch mercurial to create the delta against nullrev
 #
 # # Parent  cdb85d0512b81031d4a7b30d6a5ddbe69ef1a876
 #
 # diff --git a/mercurial/revlogutils/deltas.py b/mercurial/revlogutils/deltas.py
 # --- a/mercurial/revlogutils/deltas.py
 # +++ b/mercurial/revlogutils/deltas.py
 # @@ -1117,7 +1117,10 @@ class deltacomputer:
 #                  candidaterevs = next(groups)
 #
 #          if deltainfo is None:
 # -            deltainfo = self._fullsnapshotinfo(fh, revinfo, target_rev)
 # +            if revlog.delta_config.general_delta:
 # +                deltainfo = self._builddeltainfo(revinfo, nullrev, fh)
 # +            else:
 # +                deltainfo = self._fullsnapshotinfo(fh, revinfo, target_rev)
 
 
 cd "`dirname \"$0\"`"
 export HGRCPATH=
 export HGMODULEPOLICY=py
 
 rm -rf nullrev-diff
 ../../hg init nullrev-diff  --config format.revlog-compression=zlib
 cd nullrev-diff
 echo hi > a
 ../../../hg commit -Am root-B
 echo ho > a
 ../../../hg commit -Am child-A
 hg up null
 echo ha > a
 ../../../hg commit -Am root-A
-../../../hg debugdeltachain a
+../../../hg debugdeltachain a --all-info
 rm -rf .hg/cache/ .hg/wcache/
 cd ..
 
 tar cf test-revlog-diff-relative-to-nullrev.tar nullrev-diff
 
 rm -rf nullrev-diff

tests/test-debugcommands.t

@@ -1,732 +1,818 b''
   $ cat << EOF >> $HGRCPATH
   > [ui]
   > interactive=yes
   > EOF
 
   $ hg init debugrevlog
   $ cd debugrevlog
   $ echo a > a
   $ hg ci -Am adda
   adding a
   $ hg rm .
   removing a
   $ hg ci -Am make-it-empty
   $ hg revert --all -r 0
   adding a
   $ hg ci -Am make-it-full
 #if reporevlogstore
   $ hg debugrevlog -c
   format : 1
   flags  : inline
   
   revisions     :   3
       merges    :   0 ( 0.00%)
       normal    :   3 (100.00%)
   revisions     :   3
       empty     :   0 ( 0.00%)
                      text  :   0 (100.00%)
                      delta :   0 (100.00%)
       snapshot  :   3 (100.00%)
         lvl-0   :         3 (100.00%)
       deltas    :   0 ( 0.00%)
   revision size : 191
       snapshot  : 191 (100.00%)
         lvl-0   :       191 (100.00%)
       deltas    :   0 ( 0.00%)
   
   chunks        :   3
       0x75 (u)  :   3 (100.00%)
   chunks size   : 191
       0x75 (u)  : 191 (100.00%)
   
   
   total-stored-content: 188 bytes
   
   avg chain length  :  0
   max chain length  :  0
   max chain reach   : 67
   compression ratio :  0
   
   uncompressed data size (min/max/avg) : 57 / 66 / 62
   full revision size (min/max/avg)     : 58 / 67 / 63
   inter-snapshot size (min/max/avg)    : 0 / 0 / 0
   delta size (min/max/avg)             : 0 / 0 / 0
   $ hg debugrevlog -m
   format : 1
   flags  : inline, generaldelta
   
   revisions     :  3
       merges    :  0 ( 0.00%)
       normal    :  3 (100.00%)
   revisions     :  3
       empty     :  1 (33.33%)
                      text  :  1 (100.00%)
                      delta :  0 ( 0.00%)
       snapshot  :  2 (66.67%)
         lvl-0   :        2 (66.67%)
       deltas    :  0 ( 0.00%)
   revision size : 88
       snapshot  : 88 (100.00%)
         lvl-0   :       88 (100.00%)
       deltas    :  0 ( 0.00%)
   
   chunks        :  3
       empty     :  1 (33.33%)
       0x75 (u)  :  2 (66.67%)
   chunks size   : 88
       empty     :  0 ( 0.00%)
       0x75 (u)  : 88 (100.00%)
   
   
   total-stored-content: 86 bytes
   
   avg chain length  :  0
   max chain length  :  0
   max chain reach   : 44
   compression ratio :  0
   
   uncompressed data size (min/max/avg) : 0 / 43 / 28
   full revision size (min/max/avg)     : 44 / 44 / 44
   inter-snapshot size (min/max/avg)    : 0 / 0 / 0
   delta size (min/max/avg)             : 0 / 0 / 0
   $ hg debugrevlog a
   format : 1
   flags  : inline, generaldelta
   
   revisions     : 1
       merges    : 0 ( 0.00%)
       normal    : 1 (100.00%)
   revisions     : 1
       empty     : 0 ( 0.00%)
                      text  : 0 (100.00%)
                      delta : 0 (100.00%)
       snapshot  : 1 (100.00%)
         lvl-0   :       1 (100.00%)
       deltas    : 0 ( 0.00%)
   revision size : 3
       snapshot  : 3 (100.00%)
         lvl-0   :       3 (100.00%)
       deltas    : 0 ( 0.00%)
   
   chunks        : 1
       0x75 (u)  : 1 (100.00%)
   chunks size   : 3
       0x75 (u)  : 3 (100.00%)
   
   
   total-stored-content: 2 bytes
   
   avg chain length  : 0
   max chain length  : 0
   max chain reach   : 3
   compression ratio : 0
   
   uncompressed data size (min/max/avg) : 2 / 2 / 2
   full revision size (min/max/avg)     : 3 / 3 / 3
   inter-snapshot size (min/max/avg)    : 0 / 0 / 0
   delta size (min/max/avg)             : 0 / 0 / 0
 #endif
 
 Test debugindex, with and without the --verbose/--debug flag
   $ hg debugrevlogindex a
      rev linkrev nodeid       p1           p2
        0       0 b789fdd96dc2 000000000000 000000000000
 
 #if no-reposimplestore
   $ hg --verbose debugrevlogindex a
      rev    offset  length linkrev nodeid       p1           p2
        0         0       3       0 b789fdd96dc2 000000000000 000000000000
 
   $ hg --debug debugrevlogindex a
      rev    offset  length linkrev nodeid                                   p1                                       p2
        0         0       3       0 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000
 #endif
 
   $ hg debugrevlogindex -f 1 a
      rev flag     size   link     p1     p2       nodeid
        0 0000        2      0     -1     -1 b789fdd96dc2
 
 #if no-reposimplestore
   $ hg --verbose debugrevlogindex -f 1 a
      rev flag   offset   length     size   link     p1     p2       nodeid
        0 0000        0        3        2      0     -1     -1 b789fdd96dc2
 
   $ hg --debug debugrevlogindex -f 1 a
      rev flag   offset   length     size   link     p1     p2                                   nodeid
        0 0000        0        3        2      0     -1     -1 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3
 #endif
 
   $ hg debugindex -c
      rev linkrev       nodeid    p1-nodeid    p2-nodeid
        0       0 07f494440405 000000000000 000000000000
        1       1 8cccb4b5fec2 07f494440405 000000000000
        2       2 b1e228c512c5 8cccb4b5fec2 000000000000
   $ hg debugindex -c --debug
      rev   rank linkrev                                   nodeid p1-rev                                p1-nodeid p2-rev                                p2-nodeid            full-size delta-base flags comp-mode          data-offset chunk-size sd-comp-mode      sidedata-offset sd-chunk-size
        0     -1       0 07f4944404050f47db2e5c5071e0e84e7a27bba9     -1 0000000000000000000000000000000000000000     -1 0000000000000000000000000000000000000000                   57          0     0         2                    0         58       inline                    0             0
        1     -1       1 8cccb4b5fec20cafeb99dd01c26d4dee8ea4388a      0 07f4944404050f47db2e5c5071e0e84e7a27bba9     -1 0000000000000000000000000000000000000000                   66          1     0         2                   58         67       inline                    0             0
        2     -1       2 b1e228c512c5d7066d70562ed839c3323a62d6d2      1 8cccb4b5fec20cafeb99dd01c26d4dee8ea4388a     -1 0000000000000000000000000000000000000000                   65          2     0         2                  125         66       inline                    0             0
   $ hg debugindex -m
      rev linkrev       nodeid    p1-nodeid    p2-nodeid
        0       0 a0c8bcbbb45c 000000000000 000000000000
        1       1 57faf8a737ae a0c8bcbbb45c 000000000000
        2       2 a35b10320954 57faf8a737ae 000000000000
   $ hg debugindex -m --debug
      rev   rank linkrev                                   nodeid p1-rev                                p1-nodeid p2-rev                                p2-nodeid            full-size delta-base flags comp-mode          data-offset chunk-size sd-comp-mode      sidedata-offset sd-chunk-size
        0     -1       0 a0c8bcbbb45c63b90b70ad007bf38961f64f2af0     -1 0000000000000000000000000000000000000000     -1 0000000000000000000000000000000000000000                   43          0     0         2                    0         44       inline                    0             0
        1     -1       1 57faf8a737ae7faf490582941a82319ba6529dca      0 a0c8bcbbb45c63b90b70ad007bf38961f64f2af0     -1 0000000000000000000000000000000000000000                    0          1     0         2                   44          0       inline                    0             0
        2     -1       2 a35b103209548032201c16c7688cb2657f037a38      1 57faf8a737ae7faf490582941a82319ba6529dca     -1 0000000000000000000000000000000000000000                   43          2     0         2                   44         44       inline                    0             0
   $ hg debugindex a
      rev linkrev       nodeid    p1-nodeid    p2-nodeid
        0       0 b789fdd96dc2 000000000000 000000000000
   $ hg debugindex --debug a
      rev   rank linkrev                                   nodeid p1-rev                                p1-nodeid p2-rev                                p2-nodeid            full-size delta-base flags comp-mode          data-offset chunk-size sd-comp-mode      sidedata-offset sd-chunk-size
        0     -1       0 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3     -1 0000000000000000000000000000000000000000     -1 0000000000000000000000000000000000000000                    2          0     0         2                    0          3       inline                    0             0
 
 debugdelta chain basic output
 
 #if reporevlogstore pure
   $ hg debugindexstats
   abort: debugindexstats only works with native code
   [255]
 #endif
 #if reporevlogstore no-pure
   $ hg debugindexstats
   node trie capacity: 4
   node trie count: 2
   node trie depth: 1
   node trie last rev scanned: -1 (no-rust !)
   node trie last rev scanned: 3 (rust !)
   node trie lookups: 4 (no-rust !)
   node trie lookups: 2 (rust !)
   node trie misses: 1
   node trie splits: 1
   revs in memory: 3
 #endif
 
 #if reporevlogstore no-pure
-  $ hg debugdeltachain -m
+  $ hg debugdeltachain -m --all-info
       rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio   readsize largestblk rddensity srchunks
         0      -1      -1       1        1       -1    base         44         43         44   1.02326        44         0    0.00000         44         44   1.00000        1
         1       0      -1       2        1       -1    base          0          0          0   0.00000         0         0    0.00000          0          0   1.00000        1
         2       1      -1       3        1       -1    base         44         43         44   1.02326        44         0    0.00000         44         44   1.00000        1
 
   $ hg debugdeltachain -m -T '{rev} {chainid} {chainlen}\n'
   0 1 1
   1 2 1
   2 3 1
 
-  $ hg debugdeltachain -m -Tjson
+  $ hg debugdeltachain -m -Tjson  --size-info
+  [
+   {
+    "chainid": 1,
+    "chainlen": 1,
+    "chainratio": 1.0232558139534884,
+    "chainsize": 44,
+    "compsize": 44,
+    "deltatype": "base",
+    "p1": -1,
+    "p2": -1,
+    "prevrev": -1,
+    "rev": 0,
+    "uncompsize": 43
+   },
+   {
+    "chainid": 2,
+    "chainlen": 1,
+    "chainratio": 0,
+    "chainsize": 0,
+    "compsize": 0,
+    "deltatype": "base",
+    "p1": 0,
+    "p2": -1,
+    "prevrev": -1,
+    "rev": 1,
+    "uncompsize": 0
+   },
+   {
+    "chainid": 3,
+    "chainlen": 1,
+    "chainratio": 1.0232558139534884,
+    "chainsize": 44,
+    "compsize": 44,
+    "deltatype": "base",
+    "p1": 1,
+    "p2": -1,
+    "prevrev": -1,
+    "rev": 2,
+    "uncompsize": 43
+   }
+  ]
+
+  $ hg debugdeltachain -m -Tjson  --all-info
   [
    {
     "chainid": 1,
     "chainlen": 1,
     "chainratio": 1.0232558139534884,
     "chainsize": 44,
     "compsize": 44,
     "deltatype": "base",
     "extradist": 0,
     "extraratio": 0.0,
     "largestblock": 44,
     "lindist": 44,
     "p1": -1,
     "p2": -1,
     "prevrev": -1,
     "readdensity": 1.0,
     "readsize": 44,
     "rev": 0,
     "srchunks": 1,
     "uncompsize": 43
    },
    {
     "chainid": 2,
     "chainlen": 1,
     "chainratio": 0,
     "chainsize": 0,
     "compsize": 0,
     "deltatype": "base",
     "extradist": 0,
     "extraratio": 0,
     "largestblock": 0,
     "lindist": 0,
     "p1": 0,
     "p2": -1,
     "prevrev": -1,
     "readdensity": 1,
     "readsize": 0,
     "rev": 1,
     "srchunks": 1,
     "uncompsize": 0
    },
    {
     "chainid": 3,
     "chainlen": 1,
     "chainratio": 1.0232558139534884,
     "chainsize": 44,
     "compsize": 44,
     "deltatype": "base",
     "extradist": 0,
     "extraratio": 0.0,
     "largestblock": 44,
     "lindist": 44,
     "p1": 1,
     "p2": -1,
     "prevrev": -1,
     "readdensity": 1.0,
     "readsize": 44,
     "rev": 2,
     "srchunks": 1,
     "uncompsize": 43
    }
   ]
 
 debugdelta chain with sparse read enabled
 
   $ cat >> $HGRCPATH <<EOF
   > [experimental]
   > sparse-read = True
   > EOF
-  $ hg debugdeltachain -m
+  $ hg debugdeltachain -m --all-info
       rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio   readsize largestblk rddensity srchunks
         0      -1      -1       1        1       -1    base         44         43         44   1.02326        44         0    0.00000         44         44   1.00000        1
         1       0      -1       2        1       -1    base          0          0          0   0.00000         0         0    0.00000          0          0   1.00000        1
         2       1      -1       3        1       -1    base         44         43         44   1.02326        44         0    0.00000         44         44   1.00000        1
 
-  $ hg debugdeltachain -m -T '{rev} {chainid} {chainlen} {readsize} {largestblock} {readdensity}\n'
+  $ hg debugdeltachain -m --sparse-info -T '{rev} {chainid} {chainlen} {readsize} {largestblock} {readdensity}\n'
   0 1 1 44 44 1.0
   1 2 1 0 0 1
   2 3 1 44 44 1.0
 
-  $ hg debugdeltachain -m -Tjson
+  $ hg debugdeltachain -m -Tjson --sparse-info
+  [
+   {
+    "chainid": 1,
+    "chainlen": 1,
+    "deltatype": "base",
+    "largestblock": 44,
+    "p1": -1,
+    "p2": -1,
+    "prevrev": -1,
+    "readdensity": 1.0,
+    "readsize": 44,
+    "rev": 0,
+    "srchunks": 1
+   },
+   {
+    "chainid": 2,
+    "chainlen": 1,
+    "deltatype": "base",
+    "largestblock": 0,
+    "p1": 0,
+    "p2": -1,
+    "prevrev": -1,
+    "readdensity": 1,
+    "readsize": 0,
+    "rev": 1,
+    "srchunks": 1
+   },
+   {
+    "chainid": 3,
+    "chainlen": 1,
+    "deltatype": "base",
+    "largestblock": 44,
+    "p1": 1,
+    "p2": -1,
+    "prevrev": -1,
+    "readdensity": 1.0,
+    "readsize": 44,
+    "rev": 2,
+    "srchunks": 1
+   }
+  ]
+
+  $ hg debugdeltachain -m -Tjson --all-info
   [
    {
     "chainid": 1,
     "chainlen": 1,
     "chainratio": 1.0232558139534884,
     "chainsize": 44,
     "compsize": 44,
     "deltatype": "base",
     "extradist": 0,
     "extraratio": 0.0,
     "largestblock": 44,
     "lindist": 44,
     "p1": -1,
     "p2": -1,
     "prevrev": -1,
     "readdensity": 1.0,
     "readsize": 44,
     "rev": 0,
     "srchunks": 1,
     "uncompsize": 43
    },
    {
     "chainid": 2,
     "chainlen": 1,
     "chainratio": 0,
     "chainsize": 0,
     "compsize": 0,
     "deltatype": "base",
     "extradist": 0,
     "extraratio": 0,
     "largestblock": 0,
     "lindist": 0,
     "p1": 0,
     "p2": -1,
     "prevrev": -1,
     "readdensity": 1,
     "readsize": 0,
     "rev": 1,
     "srchunks": 1,
     "uncompsize": 0
    },
    {
     "chainid": 3,
     "chainlen": 1,
     "chainratio": 1.0232558139534884,
     "chainsize": 44,
     "compsize": 44,
     "deltatype": "base",
     "extradist": 0,
     "extraratio": 0.0,
     "largestblock": 44,
     "lindist": 44,
     "p1": 1,
     "p2": -1,
     "prevrev": -1,
     "readdensity": 1.0,
     "readsize": 44,
     "rev": 2,
     "srchunks": 1,
     "uncompsize": 43
    }
   ]
 
   $ printf "This test checks things.\n" >> a
   $ hg ci -m a
   $ hg branch other
   marked working directory as branch other
   (branches are permanent and global, did you want a bookmark?)
   $ for i in `$TESTDIR/seq.py 5`; do
   >   printf "shorter ${i}" >> a
   >   hg ci -m "a other:$i"
   >   hg up -q default
   >   printf "for the branch default we want longer chains: ${i}" >> a
   >   hg ci -m "a default:$i"
   >   hg up -q other
   > done
-  $ hg debugdeltachain a -T '{rev} {srchunks}\n' \
+  $ hg debugdeltachain a -T '{rev} {srchunks}\n'  --all-info\
   >    --config experimental.sparse-read.density-threshold=0.50 \
   >    --config experimental.sparse-read.min-gap-size=0
   0 1
   1 1
   2 1
   3 1
   4 1
   5 1
   6 1
   7 1
   8 1
   9 1
   10 2 (no-zstd !)
   10 1 (zstd !)
   11 1
   $ hg --config extensions.strip= strip --no-backup -r 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 Test max chain len
   $ cat >> $HGRCPATH << EOF
   > [format]
   > maxchainlen=4
   > EOF
 
   $ printf "This test checks if maxchainlen config value is respected also it can serve as basic test for debugrevlog -d <file>.\n" >> a
   $ hg ci -m a
   $ printf "b\n" >> a
   $ hg ci -m a
   $ printf "c\n" >> a
   $ hg ci -m a
   $ printf "d\n" >> a
   $ hg ci -m a
   $ printf "e\n" >> a
   $ hg ci -m a
   $ printf "f\n" >> a
   $ hg ci -m a
   $ printf 'g\n' >> a
   $ hg ci -m a
   $ printf 'h\n' >> a
   $ hg ci -m a
 
   $ hg debugrevlog -d a
   # rev p1rev p2rev start   end deltastart base   p1   p2 rawsize totalsize compression heads chainlen
       0    -1    -1     0   ???          0    0    0    0     ???      ????           ?     1        0 (glob)
       1     0    -1   ???   ???          0    0    0    0     ???      ????           ?     1        1 (glob)
       2     1    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        2 (glob)
       3     2    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        3 (glob)
       4     3    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        4 (glob)
       5     4    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        0 (glob)
       6     5    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        1 (glob)
       7     6    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        2 (glob)
       8     7    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        3 (glob)
 #endif
 
 Test debuglocks command:
 
   $ hg debuglocks
   lock:  free
   wlock: free
 
 * Test setting the lock
 
 waitlock <file> will wait for file to be created. If it isn't in a reasonable
 amount of time, displays error message and returns 1
   $ waitlock() {
   >     start=`date +%s`
   >     timeout=5
   >     while [ \( ! -f $1 \) -a \( ! -L $1 \) ]; do
   >         now=`date +%s`
   >         if [ "`expr $now - $start`" -gt $timeout ]; then
   >             echo "timeout: $1 was not created in $timeout seconds"
   >             return 1
   >         fi
   >         sleep 0.1
   >     done
   > }
   $ dolock() {
   >     {
   >         waitlock .hg/unlock
   >         rm -f .hg/unlock
   >         echo y
   >     } | hg debuglocks "$@" > /dev/null
   > }
   $ dolock -s &
   $ waitlock .hg/store/lock
 
   $ hg debuglocks
   lock:  user *, process * (*s) (glob)
   wlock: free
   [1]
   $ touch .hg/unlock
   $ wait
   $ [ -f .hg/store/lock ] || echo "There is no lock"
   There is no lock
 
 * Test setting the wlock
 
   $ dolock -S &
   $ waitlock .hg/wlock
 
   $ hg debuglocks
   lock:  free
   wlock: user *, process * (*s) (glob)
   [1]
   $ touch .hg/unlock
   $ wait
   $ [ -f .hg/wlock ] || echo "There is no wlock"
   There is no wlock
 
 * Test setting both locks
 
   $ dolock -Ss &
   $ waitlock .hg/wlock && waitlock .hg/store/lock
 
   $ hg debuglocks
   lock:  user *, process * (*s) (glob)
   wlock: user *, process * (*s) (glob)
   [2]
 
 * Test failing to set a lock
 
   $ hg debuglocks -s
   abort: lock is already held
   [255]
 
   $ hg debuglocks -S
   abort: wlock is already held
   [255]
 
   $ touch .hg/unlock
   $ wait
 
   $ hg debuglocks
   lock:  free
   wlock: free
 
 * Test forcing the lock
 
   $ dolock -s &
   $ waitlock .hg/store/lock
 
   $ hg debuglocks
   lock:  user *, process * (*s) (glob)
   wlock: free
   [1]
 
   $ hg debuglocks -L
 
   $ hg debuglocks
   lock:  free
   wlock: free
 
   $ touch .hg/unlock
   $ wait
 
 * Test forcing the wlock
 
   $ dolock -S &
   $ waitlock .hg/wlock
 
   $ hg debuglocks
   lock:  free
   wlock: user *, process * (*s) (glob)
   [1]
 
   $ hg debuglocks -W
 
   $ hg debuglocks
   lock:  free
   wlock: free
 
   $ touch .hg/unlock
   $ wait
 
 Test WdirUnsupported exception
 
   $ hg debugdata -c ffffffffffffffffffffffffffffffffffffffff
   abort: working directory revision cannot be specified
   [255]
 
 Test cache warming command
 
   $ rm -rf .hg/cache/
   $ hg debugupdatecaches --debug
   updating the branch cache
   $ ls -r .hg/cache/*
   .hg/cache/tags2-served
   .hg/cache/tags2
   .hg/cache/rbc-revs-v1
   .hg/cache/rbc-names-v1
   .hg/cache/hgtagsfnodes1
   .hg/cache/branch2-visible-hidden
   .hg/cache/branch2-visible
   .hg/cache/branch2-served.hidden
   .hg/cache/branch2-served
   .hg/cache/branch2-immutable
   .hg/cache/branch2-base
 
 Test debugcolor
 
 #if no-windows
   $ hg debugcolor --style --color always | grep -E 'mode|style|log\.'
   color mode: 'ansi'
   available style:
   \x1b[0;33mlog.changeset\x1b[0m:                      \x1b[0;33myellow\x1b[0m (esc)
 #endif
 
   $ hg debugcolor --style --color never
   color mode: None
   available style:
 
   $ cd ..
 
 Test internal debugstacktrace command
 
   $ cat > debugstacktrace.py << EOF
   > from mercurial import (
   >     util,
   > )
   > from mercurial.utils import (
   >     procutil,
   > )
   > def f():
   >     util.debugstacktrace(f=procutil.stdout)
   >     g()
   > def g():
   >     util.dst(b'hello from g\\n', skip=1)
   >     h()
   > def h():
   >     util.dst(b'hi ...\\nfrom h hidden in g', 1, depth=2)
   > f()
   > EOF
   $ "$PYTHON" debugstacktrace.py
   stacktrace at:
    *debugstacktrace.py:15 in * (glob)
    *debugstacktrace.py:8  in f (glob)
   hello from g at:
    *debugstacktrace.py:15 in * (glob)
    *debugstacktrace.py:9  in f (glob)
   hi ...
   from h hidden in g at:
    *debugstacktrace.py:9  in f (glob)
    *debugstacktrace.py:12 in g (glob)
 
 Test debugcapabilities command:
 
   $ hg debugcapabilities ./debugrevlog/
   Main capabilities:
     branchmap
     $USUAL_BUNDLE2_CAPS$
     getbundle
     known
     lookup
     pushkey
     unbundle
   Bundle2 capabilities:
     HG20
     bookmarks
     changegroup
       01
       02
       03
     checkheads
       related
     digests
       md5
       sha1
       sha512
     error
       abort
       unsupportedcontent
       pushraced
       pushkey
     hgtagsfnodes
     listkeys
     phases
       heads
     pushkey
     remote-changegroup
       http
       https
     stream
       v2
 
 Test debugpeer
 
   $ hg debugpeer ssh://user@dummy/debugrevlog
   url: ssh://user@dummy/debugrevlog
   local: no
   pushable: yes
 
 #if rust
 
   $ hg --debug debugpeer ssh://user@dummy/debugrevlog
   running .* ".*[/\\]dummyssh" ['"]user@dummy['"] ['"]hg -R debugrevlog serve --stdio['"] (re)
   devel-peer-request: hello+between
   devel-peer-request:   pairs: 81 bytes
   sending hello command
   sending between command
   remote: 473
   remote: capabilities: batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset getbundle known lookup protocaps pushkey streamreqs=generaldelta,revlog-compression-zstd,revlogv1,sparserevlog unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash
   remote: 1
   devel-peer-request: protocaps
   devel-peer-request:   caps: * bytes (glob)
   sending protocaps command
   url: ssh://user@dummy/debugrevlog
   local: no
   pushable: yes
 
 #endif
 
 #if no-rust zstd
 
   $ hg --debug debugpeer ssh://user@dummy/debugrevlog
   running .* ".*[/\\]dummyssh" ['"]user@dummy['"] ['"]hg -R debugrevlog serve --stdio['"] (re)
   devel-peer-request: hello+between
   devel-peer-request:   pairs: 81 bytes
   sending hello command
   sending between command
   remote: 473
   remote: capabilities: batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset getbundle known lookup protocaps pushkey streamreqs=generaldelta,revlog-compression-zstd,revlogv1,sparserevlog unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash
   remote: 1
   devel-peer-request: protocaps
   devel-peer-request:   caps: * bytes (glob)
   sending protocaps command
   url: ssh://user@dummy/debugrevlog
   local: no
   pushable: yes
 
 #endif
 
 #if no-rust no-zstd
 
   $ hg --debug debugpeer ssh://user@dummy/debugrevlog
   running .* ".*[/\\]dummyssh" ['"]user@dummy['"] ['"]hg -R debugrevlog serve --stdio['"] (re)
   devel-peer-request: hello+between
   devel-peer-request:   pairs: 81 bytes
   sending hello command
   sending between command
   remote: 449
   remote: capabilities: batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset getbundle known lookup protocaps pushkey streamreqs=generaldelta,revlogv1,sparserevlog unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash
   remote: 1
   devel-peer-request: protocaps
   devel-peer-request:   caps: * bytes (glob)
   sending protocaps command
   url: ssh://user@dummy/debugrevlog
   local: no
   pushable: yes
 
 #endif
 
 Test debugshell
 
   $ hg debugshell -c 'ui.write(b"%s\n" % ui.username())'
   test

tests/test-generaldelta.t

@@ -1,406 +1,406 b''
 #require no-reposimplestore
 
 Check whether size of generaldelta revlog is not bigger than its
 regular equivalent. Test would fail if generaldelta was naive
 implementation of parentdelta: third manifest revision would be fully
 inserted due to big distance from its paren revision (zero).
 
   $ cat << EOF >> $HGRCPATH
   > [format]
   > sparse-revlog = no
   > EOF
 
   $ hg init repo --config format.generaldelta=no --config format.usegeneraldelta=no
   $ cd repo
   $ echo foo > foo
   $ echo bar > bar
   $ echo baz > baz
   $ hg commit -q -Am boo
   $ hg clone --pull . ../gdrepo -q --config format.generaldelta=yes
   $ for r in 1 2 3; do
   >   echo $r > foo
   >   hg commit -q -m $r
   >   hg up -q -r 0
   >   hg pull . -q -r $r -R ../gdrepo
   > done
 
   $ cd ..
   >>> import os
   >>> regsize = os.stat("repo/.hg/store/00manifest.i").st_size
   >>> gdsize = os.stat("gdrepo/.hg/store/00manifest.i").st_size
   >>> if regsize < gdsize:
   ...     print('generaldata increased size of manifest')
 
 Verify rev reordering doesnt create invalid bundles (issue4462)
 This requires a commit tree that when pulled will reorder manifest revs such
 that the second manifest to create a file rev will be ordered before the first
 manifest to create that file rev. We also need to do a partial pull to ensure
 reordering happens. At the end we verify the linkrev points at the earliest
 commit.
 
   $ hg init server --config format.generaldelta=True
   $ cd server
   $ touch a
   $ hg commit -Aqm a
   $ echo x > x
   $ echo y > y
   $ hg commit -Aqm xy
   $ hg up -q '.^'
   $ echo x > x
   $ echo z > z
   $ hg commit -Aqm xz
   $ hg up -q 1
   $ echo b > b
   $ hg commit -Aqm b
   $ hg merge -q 2
   $ hg commit -Aqm merge
   $ echo c > c
   $ hg commit -Aqm c
   $ hg log -G -T '{rev} {shortest(node)} {desc}'
   @  5 ebb8 c
   |
   o    4 baf7 merge
   |\
   | o  3 a129 b
   | |
   o |  2 958c xz
   | |
   | o  1 f00c xy
   |/
   o  0 3903 a
   
   $ cd ..
   $ hg init client --config format.generaldelta=false --config format.usegeneraldelta=false
   $ cd client
   $ hg pull -q ../server -r 4
   $ hg debugdeltachain x
-      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
-        0      -1      -1       1        1       -1    base          3          2          3   1.50000         3         0    0.00000
+      rev      p1      p2  chain# chainlen     prev   delta
+        0      -1      -1       1        1       -1    base
 
   $ cd ..
 
 Test "usegeneraldelta" config
 (repo are general delta, but incoming bundle are not re-deltafied)
 
 delta coming from the server base delta server are not recompressed.
 (also include the aggressive version for comparison)
 
   $ hg clone repo --pull --config format.usegeneraldelta=1 usegd
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 4 changesets with 6 changes to 3 files (+2 heads)
   new changesets 0ea3fcf9d01d:bba78d330d9c
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg clone repo --pull --config format.generaldelta=1 full
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 4 changesets with 6 changes to 3 files (+2 heads)
   new changesets 0ea3fcf9d01d:bba78d330d9c
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -R repo debugdeltachain -m
-      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
-        0      -1      -1       1        1       -1    base        10?        135        10?   0.7????       10?         0    0.00000 (glob)
-        1       0      -1       1        2        0    prev         57        135        1??   1.?????       16?         0    0.00000 (glob)
-        2       0      -1       1        3        1    prev         57        135        2??   1.6????       2??         0    0.00000 (glob)
-        3       0      -1       2        1       -1    base        104        135        104   0.77037       104         0    0.00000
+      rev      p1      p2  chain# chainlen     prev   delta
+        0      -1      -1       1        1       -1    base
+        1       0      -1       1        2        0    prev
+        2       0      -1       1        3        1    prev
+        3       0      -1       2        1       -1    base
   $ hg -R usegd debugdeltachain -m
-      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
-        0      -1      -1       1        1       -1    base        10?        135        10?   0.7????       10?         0    0.00000 (glob)
-        1       0      -1       1        2        0      p1         57        135        16?   1.?????       16?         0    0.00000 (glob)
-        2       0      -1       1        3        1    prev         57        135        2??   1.6????       2??         0    0.00000 (glob)
-        3       0      -1       1        2        0      p1         57        135        16?   1.?????       27?       114    0.????? (glob)
+      rev      p1      p2  chain# chainlen     prev   delta
+        0      -1      -1       1        1       -1    base
+        1       0      -1       1        2        0      p1
+        2       0      -1       1        3        1    prev
+        3       0      -1       1        2        0      p1
   $ hg -R full debugdeltachain -m
-      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
-        0      -1      -1       1        1       -1    base        10?        135        10?   0.7????       10?         0    0.00000 (glob)
-        1       0      -1       1        2        0      p1         57        135        16?   1.?????       16?         0    0.00000 (glob)
-        2       0      -1       1        2        0      p1         57        135        16?   1.?????       2??        57    0.3???? (glob)
-        3       0      -1       1        2        0      p1         57        135        16?   1.?????       27?       114    0.????? (glob)
+      rev      p1      p2  chain# chainlen     prev   delta
+        0      -1      -1       1        1       -1    base
+        1       0      -1       1        2        0      p1
+        2       0      -1       1        2        0      p1
+        3       0      -1       1        2        0      p1
 
 Test revlog.optimize-delta-parent-choice
 
   $ hg init --config format.generaldelta=1 aggressive
   $ cd aggressive
   $ cat << EOF >> .hg/hgrc
   > [format]
   > generaldelta = 1
   > EOF
   $ touch a b c d e
   $ hg commit -Aqm side1
   $ hg up -q null
   $ touch x y
   $ hg commit -Aqm side2
 
 - Verify non-aggressive merge uses p1 (commit 1) as delta parent
   $ hg merge -q 0
   $ hg commit -q -m merge
   $ hg debugdeltachain -m
-      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
-        0      -1      -1       1        1       -1    base         ??        215         ??   0.?????        ??         0    0.00000 (glob)
-        1      -1      -1       1        2        0    prev         ??         86        1??   1.?????       1??         0    0.00000 (glob)
-        2       1       0       1        2        0      p2         ??        301        1??   0.4????       ???        ??    0.5???? (glob)
+      rev      p1      p2  chain# chainlen     prev   delta
+        0      -1      -1       1        1       -1    base
+        1      -1      -1       1        2        0    prev
+        2       1       0       1        2        0      p2
 
   $ hg strip -q -r . --config extensions.strip=
 
 - Verify aggressive merge uses p2 (commit 0) as delta parent
   $ hg up -q -C 1
   $ hg merge -q 0
   $ hg commit -q -m merge --config storage.revlog.optimize-delta-parent-choice=yes
   $ hg debugdeltachain -m
-      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
-        0      -1      -1       1        1       -1    base         ??        215         ??   0.?????        ??         0    0.00000 (glob)
-        1      -1      -1       1        2        0    prev         ??         86        1??   1.?????       1??         0    0.00000 (glob)
-        2       1       0       1        2        0      p2         ??        301        1??   0.4????       ???        ??    0.5???? (glob)
+      rev      p1      p2  chain# chainlen     prev   delta
+        0      -1      -1       1        1       -1    base
+        1      -1      -1       1        2        0    prev
+        2       1       0       1        2        0      p2
 
 Test that strip bundle use bundle2
   $ hg --config extensions.strip= strip .
   0 files updated, 0 files merged, 5 files removed, 0 files unresolved
   saved backup bundle to $TESTTMP/aggressive/.hg/strip-backup/1c5d4dc9a8b8-6c68e60c-backup.hg
   $ hg debugbundle .hg/strip-backup/*
   Stream params: {Compression: BZ}
   changegroup -- {nbchanges: 1, version: 03} (mandatory: True)
       1c5d4dc9a8b8d6e1750966d343e94db665e7a1e9
   cache:rev-branch-cache -- {} (mandatory: False)
   phase-heads -- {} (mandatory: True)
       1c5d4dc9a8b8d6e1750966d343e94db665e7a1e9 draft
 
   $ cd ..
 
 test maxdeltachainspan
 
   $ hg init source-repo
   $ cd source-repo
   $ hg debugbuilddag --new-file '.+5:brancha$.+11:branchb$.+30:branchc<brancha+2<branchb+2'
 # add an empty revision somewhere
   $ hg up tip
   14 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg rm .
   removing nf10
   removing nf11
   removing nf12
   removing nf13
   removing nf14
   removing nf15
   removing nf16
   removing nf17
   removing nf51
   removing nf52
   removing nf6
   removing nf7
   removing nf8
   removing nf9
   $ hg commit -m 'empty all'
   $ hg revert --all --rev 'p1(.)'
   adding nf10
   adding nf11
   adding nf12
   adding nf13
   adding nf14
   adding nf15
   adding nf16
   adding nf17
   adding nf51
   adding nf52
   adding nf6
   adding nf7
   adding nf8
   adding nf9
   $ hg commit -m 'restore all'
   $ hg up null
   0 files updated, 0 files merged, 14 files removed, 0 files unresolved
   $ 
   $ cd ..
-  $ hg -R source-repo debugdeltachain -m
+  $ hg -R source-repo debugdeltachain -m --all-info
       rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
         0      -1      -1       1        1       -1    base         46         45         46   1.02222        46         0    0.00000
         1       0      -1       1        2        0      p1         57         90        103   1.14444       103         0    0.00000
         2       1      -1       1        3        1      p1         57        135        160   1.18519       160         0    0.00000
         3       2      -1       1        4        2      p1         57        180        217   1.20556       217         0    0.00000
         4       3      -1       1        5        3      p1         57        225        274   1.21778       274         0    0.00000
         5       4      -1       1        6        4      p1         57        270        331   1.22593       331         0    0.00000
         6      -1      -1       2        1       -1    base         46         45         46   1.02222        46         0    0.00000
         7       6      -1       2        2        6      p1         57         90        103   1.14444       103         0    0.00000
         8       7      -1       2        3        7      p1         57        135        160   1.18519       160         0    0.00000
         9       8      -1       2        4        8      p1         57        180        217   1.20556       217         0    0.00000
        10       9      -1       2        5        9      p1         58        226        275   1.21681       275         0    0.00000
        11      10      -1       2        6       10      p1         58        272        333   1.22426       333         0    0.00000
        12      11      -1       2        7       11      p1         58        318        391   1.22956       391         0    0.00000
        13      12      -1       2        8       12      p1         58        364        449   1.23352       449         0    0.00000
        14      13      -1       2        9       13      p1         58        410        507   1.23659       507         0    0.00000
        15      14      -1       2       10       14      p1         58        456        565   1.23904       565         0    0.00000
        16      15      -1       2       11       15      p1         58        502        623   1.24104       623         0    0.00000
        17      16      -1       2       12       16      p1         58        548        681   1.24270       681         0    0.00000
        18      -1      -1       3        1       -1    base         47         46         47   1.02174        47         0    0.00000
        19      18      -1       3        2       18      p1         58         92        105   1.14130       105         0    0.00000
        20      19      -1       3        3       19      p1         58        138        163   1.18116       163         0    0.00000
        21      20      -1       3        4       20      p1         58        184        221   1.20109       221         0    0.00000
        22      21      -1       3        5       21      p1         58        230        279   1.21304       279         0    0.00000
        23      22      -1       3        6       22      p1         58        276        337   1.22101       337         0    0.00000
        24      23      -1       3        7       23      p1         58        322        395   1.22671       395         0    0.00000
        25      24      -1       3        8       24      p1         58        368        453   1.23098       453         0    0.00000
        26      25      -1       3        9       25      p1         58        414        511   1.23430       511         0    0.00000
        27      26      -1       3       10       26      p1         58        460        569   1.23696       569         0    0.00000
        28      27      -1       3       11       27      p1         58        506        627   1.23913       627         0    0.00000
        29      28      -1       3       12       28      p1         58        552        685   1.24094       685         0    0.00000
        30      29      -1       3       13       29      p1         58        598        743   1.24247       743         0    0.00000
        31      30      -1       3       14       30      p1         58        644        801   1.24379       801         0    0.00000
        32      31      -1       3       15       31      p1         58        690        859   1.24493       859         0    0.00000
        33      32      -1       3       16       32      p1         58        736        917   1.24592       917         0    0.00000
        34      33      -1       3       17       33      p1         58        782        975   1.24680       975         0    0.00000
        35      34      -1       3       18       34      p1         58        828       1033   1.24758      1033         0    0.00000
        36      35      -1       3       19       35      p1         58        874       1091   1.24828      1091         0    0.00000
        37      36      -1       3       20       36      p1         58        920       1149   1.24891      1149         0    0.00000
        38      37      -1       3       21       37      p1         58        966       1207   1.24948      1207         0    0.00000
        39      38      -1       3       22       38      p1         58       1012       1265   1.25000      1265         0    0.00000
        40      39      -1       3       23       39      p1         58       1058       1323   1.25047      1323         0    0.00000
        41      40      -1       3       24       40      p1         58       1104       1381   1.25091      1381         0    0.00000
        42      41      -1       3       25       41      p1         58       1150       1439   1.25130      1439         0    0.00000
        43      42      -1       3       26       42      p1         58       1196       1497   1.25167      1497         0    0.00000
        44      43      -1       3       27       43      p1         58       1242       1555   1.25201      1555         0    0.00000
        45      44      -1       3       28       44      p1         58       1288       1613   1.25233      1613         0    0.00000
        46      45      -1       3       29       45      p1         58       1334       1671   1.25262      1671         0    0.00000
        47      46      -1       3       30       46      p1         58       1380       1729   1.25290      1729         0    0.00000
        48      47      -1       3       31       47      p1         58       1426       1787   1.25316      1787         0    0.00000
        49       5      -1       4        1       -1    base        ???        316        ???   0.6????       ???         0    0.00000 (glob)
        50      49      -1       4        2       49      p1         58        362        2??   0.7????       2??         0    0.00000 (glob)
        51      17      -1       4        3       50    prev        3??        5??        6??   1.0????       6??         0    0.00000 (glob)
        52      51      -1       4        4       51      p1         58        640        6??   1.0????       6??         0    0.00000 (glob)
        53      52      -1       5        1       -1    base          0          0          0   0.00000         0         0    0.00000
        54      53      -1       6        1       -1    base        3??        640        3??   0.5????       3??         0    0.00000 (glob)
   $ hg clone --pull source-repo --config experimental.maxdeltachainspan=2800 relax-chain --config format.generaldelta=yes
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 55 changesets with 53 changes to 53 files (+2 heads)
   new changesets 61246295ee1e:c930ac4a5b32
   updating to branch default
   14 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  $ hg -R relax-chain debugdeltachain -m
+  $ hg -R relax-chain debugdeltachain -m --all-info
       rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
         0      -1      -1       1        1       -1    base         46         45         46   1.02222        46         0    0.00000
         1       0      -1       1        2        0      p1         57         90        103   1.14444       103         0    0.00000
         2       1      -1       1        3        1      p1         57        135        160   1.18519       160         0    0.00000
         3       2      -1       1        4        2      p1         57        180        217   1.20556       217         0    0.00000
         4       3      -1       1        5        3      p1         57        225        274   1.21778       274         0    0.00000
         5       4      -1       1        6        4      p1         57        270        331   1.22593       331         0    0.00000
         6      -1      -1       2        1       -1    base         46         45         46   1.02222        46         0    0.00000
         7       6      -1       2        2        6      p1         57         90        103   1.14444       103         0    0.00000
         8       7      -1       2        3        7      p1         57        135        160   1.18519       160         0    0.00000
         9       8      -1       2        4        8      p1         57        180        217   1.20556       217         0    0.00000
        10       9      -1       2        5        9      p1         58        226        275   1.21681       275         0    0.00000
        11      10      -1       2        6       10      p1         58        272        333   1.22426       333         0    0.00000
        12      11      -1       2        7       11      p1         58        318        391   1.22956       391         0    0.00000
        13      12      -1       2        8       12      p1         58        364        449   1.23352       449         0    0.00000
        14      13      -1       2        9       13      p1         58        410        507   1.23659       507         0    0.00000
        15      14      -1       2       10       14      p1         58        456        565   1.23904       565         0    0.00000
        16      15      -1       2       11       15      p1         58        502        623   1.24104       623         0    0.00000
        17      16      -1       2       12       16      p1         58        548        681   1.24270       681         0    0.00000
        18      -1      -1       3        1       -1    base         47         46         47   1.02174        47         0    0.00000
        19      18      -1       3        2       18      p1         58         92        105   1.14130       105         0    0.00000
        20      19      -1       3        3       19      p1         58        138        163   1.18116       163         0    0.00000
        21      20      -1       3        4       20      p1         58        184        221   1.20109       221         0    0.00000
        22      21      -1       3        5       21      p1         58        230        279   1.21304       279         0    0.00000
        23      22      -1       3        6       22      p1         58        276        337   1.22101       337         0    0.00000
        24      23      -1       3        7       23      p1         58        322        395   1.22671       395         0    0.00000
        25      24      -1       3        8       24      p1         58        368        453   1.23098       453         0    0.00000
        26      25      -1       3        9       25      p1         58        414        511   1.23430       511         0    0.00000
        27      26      -1       3       10       26      p1         58        460        569   1.23696       569         0    0.00000
        28      27      -1       3       11       27      p1         58        506        627   1.23913       627         0    0.00000
        29      28      -1       3       12       28      p1         58        552        685   1.24094       685         0    0.00000
        30      29      -1       3       13       29      p1         58        598        743   1.24247       743         0    0.00000
        31      30      -1       3       14       30      p1         58        644        801   1.24379       801         0    0.00000
        32      31      -1       3       15       31      p1         58        690        859   1.24493       859         0    0.00000
        33      32      -1       3       16       32      p1         58        736        917   1.24592       917         0    0.00000
        34      33      -1       3       17       33      p1         58        782        975   1.24680       975         0    0.00000
        35      34      -1       3       18       34      p1         58        828       1033   1.24758      1033         0    0.00000
        36      35      -1       3       19       35      p1         58        874       1091   1.24828      1091         0    0.00000
        37      36      -1       3       20       36      p1         58        920       1149   1.24891      1149         0    0.00000
        38      37      -1       3       21       37      p1         58        966       1207   1.24948      1207         0    0.00000
        39      38      -1       3       22       38      p1         58       1012       1265   1.25000      1265         0    0.00000
        40      39      -1       3       23       39      p1         58       1058       1323   1.25047      1323         0    0.00000
        41      40      -1       3       24       40      p1         58       1104       1381   1.25091      1381         0    0.00000
        42      41      -1       3       25       41      p1         58       1150       1439   1.25130      1439         0    0.00000
        43      42      -1       3       26       42      p1         58       1196       1497   1.25167      1497         0    0.00000
        44      43      -1       3       27       43      p1         58       1242       1555   1.25201      1555         0    0.00000
        45      44      -1       3       28       44      p1         58       1288       1613   1.25233      1613         0    0.00000
        46      45      -1       3       29       45      p1         58       1334       1671   1.25262      1671         0    0.00000
        47      46      -1       3       30       46      p1         58       1380       1729   1.25290      1729         0    0.00000
        48      47      -1       3       31       47      p1         58       1426       1787   1.25316      1787         0    0.00000
        49       5      -1       4        1       -1    base        ???        316        ???   0.6????       ???         0    0.00000 (glob)
        50      49      -1       4        2       49      p1         58        362        2??   0.7????       2??         0    0.00000 (glob)
        51      17      -1       2       13       17      p1         58        594        739   1.24411      278?      20??    2.7???? (glob)
        52      51      -1       5        1       -1    base        3??        640        3??   0.5????       3??         0    0.00000 (glob)
        53      52      -1       6        1       -1    base          0          0          0   0.00000         0         0    0.00000
        54      53      -1       7        1       -1    base        3??        640        3??   0.5????       3??         0    0.00000 (glob)
   $ hg clone --pull source-repo --config experimental.maxdeltachainspan=0 noconst-chain --config format.usegeneraldelta=yes --config storage.revlog.reuse-external-delta-parent=no
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 55 changesets with 53 changes to 53 files (+2 heads)
   new changesets 61246295ee1e:c930ac4a5b32
   updating to branch default
   14 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  $ hg -R noconst-chain debugdeltachain -m
+  $ hg -R noconst-chain debugdeltachain -m --all-info
       rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
         0      -1      -1       1        1       -1    base         46         45         46   1.02222        46         0    0.00000
         1       0      -1       1        2        0      p1         57         90        103   1.14444       103         0    0.00000
         2       1      -1       1        3        1      p1         57        135        160   1.18519       160         0    0.00000
         3       2      -1       1        4        2      p1         57        180        217   1.20556       217         0    0.00000
         4       3      -1       1        5        3      p1         57        225        274   1.21778       274         0    0.00000
         5       4      -1       1        6        4      p1         57        270        331   1.22593       331         0    0.00000
         6      -1      -1       2        1       -1    base         46         45         46   1.02222        46         0    0.00000
         7       6      -1       2        2        6      p1         57         90        103   1.14444       103         0    0.00000
         8       7      -1       2        3        7      p1         57        135        160   1.18519       160         0    0.00000
         9       8      -1       2        4        8      p1         57        180        217   1.20556       217         0    0.00000
        10       9      -1       2        5        9      p1         58        226        275   1.21681       275         0    0.00000
        11      10      -1       2        6       10      p1         58        272        333   1.22426       333         0    0.00000
        12      11      -1       2        7       11      p1         58        318        391   1.22956       391         0    0.00000
        13      12      -1       2        8       12      p1         58        364        449   1.23352       449         0    0.00000
        14      13      -1       2        9       13      p1         58        410        507   1.23659       507         0    0.00000
        15      14      -1       2       10       14      p1         58        456        565   1.23904       565         0    0.00000
        16      15      -1       2       11       15      p1         58        502        623   1.24104       623         0    0.00000
        17      16      -1       2       12       16      p1         58        548        681   1.24270       681         0    0.00000
        18      -1      -1       3        1       -1    base         47         46         47   1.02174        47         0    0.00000
        19      18      -1       3        2       18      p1         58         92        105   1.14130       105         0    0.00000
        20      19      -1       3        3       19      p1         58        138        163   1.18116       163         0    0.00000
        21      20      -1       3        4       20      p1         58        184        221   1.20109       221         0    0.00000
        22      21      -1       3        5       21      p1         58        230        279   1.21304       279         0    0.00000
        23      22      -1       3        6       22      p1         58        276        337   1.22101       337         0    0.00000
        24      23      -1       3        7       23      p1         58        322        395   1.22671       395         0    0.00000
        25      24      -1       3        8       24      p1         58        368        453   1.23098       453         0    0.00000
        26      25      -1       3        9       25      p1         58        414        511   1.23430       511         0    0.00000
        27      26      -1       3       10       26      p1         58        460        569   1.23696       569         0    0.00000
        28      27      -1       3       11       27      p1         58        506        627   1.23913       627         0    0.00000
        29      28      -1       3       12       28      p1         58        552        685   1.24094       685         0    0.00000
        30      29      -1       3       13       29      p1         58        598        743   1.24247       743         0    0.00000
        31      30      -1       3       14       30      p1         58        644        801   1.24379       801         0    0.00000
        32      31      -1       3       15       31      p1         58        690        859   1.24493       859         0    0.00000
        33      32      -1       3       16       32      p1         58        736        917   1.24592       917         0    0.00000
        34      33      -1       3       17       33      p1         58        782        975   1.24680       975         0    0.00000
        35      34      -1       3       18       34      p1         58        828       1033   1.24758      1033         0    0.00000
        36      35      -1       3       19       35      p1         58        874       1091   1.24828      1091         0    0.00000
        37      36      -1       3       20       36      p1         58        920       1149   1.24891      1149         0    0.00000
        38      37      -1       3       21       37      p1         58        966       1207   1.24948      1207         0    0.00000
        39      38      -1       3       22       38      p1         58       1012       1265   1.25000      1265         0    0.00000
        40      39      -1       3       23       39      p1         58       1058       1323   1.25047      1323         0    0.00000
        41      40      -1       3       24       40      p1         58       1104       1381   1.25091      1381         0    0.00000
        42      41      -1       3       25       41      p1         58       1150       1439   1.25130      1439         0    0.00000
        43      42      -1       3       26       42      p1         58       1196       1497   1.25167      1497         0    0.00000
        44      43      -1       3       27       43      p1         58       1242       1555   1.25201      1555         0    0.00000
        45      44      -1       3       28       44      p1         58       1288       1613   1.25233      1613         0    0.00000
        46      45      -1       3       29       45      p1         58       1334       1671   1.25262      1671         0    0.00000
        47      46      -1       3       30       46      p1         58       1380       1729   1.25290      1729         0    0.00000
        48      47      -1       3       31       47      p1         58       1426       1787   1.25316      1787         0    0.00000
        49       5      -1       1        7        5      p1         58        316        389   1.23101      2857      2468    6.34447
        50      49      -1       1        8       49      p1         58        362        447   1.23481      2915      2468    5.52125
        51      17      -1       2       13       17      p1         58        594        739   1.24411      2642      1903    2.57510
        52      51      -1       2       14       51      p1         58        640        797   1.24531      2700      1903    2.38770
        53      52      -1       4        1       -1    base          0          0          0   0.00000         0         0    0.00000
        54      53      -1       5        1       -1    base        3??        640        3??   0.5????       3??         0    0.00000 (glob)

tests/test-parseindex.t

@@ -1,220 +1,220 b''
 revlog.parseindex must be able to parse the index file even if
 an index entry is split between two 64k blocks.  The ideal test
 would be to create an index file with inline data where
 64k < size < 64k + 64 (64k is the size of the read buffer, 64 is
 the size of an index entry) and with an index entry starting right
 before the 64k block boundary, and try to read it.
 We approximate that by reducing the read buffer to 1 byte.
 
   $ hg init a
   $ cd a
   $ echo abc > foo
   $ hg add foo
   $ hg commit -m 'add foo'
   $ echo >> foo
   $ hg commit -m 'change foo'
   $ hg log -r 0:
   changeset:   0:7c31755bf9b5
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     add foo
   
   changeset:   1:26333235a41c
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     change foo
   
   $ cat >> test.py << EOF
   > from mercurial import changelog, node, pycompat, vfs
   > 
   > class singlebyteread(object):
   >     def __init__(self, real):
   >         self.real = real
   > 
   >     def read(self, size=-1):
   >         if size == 65536:
   >             size = 1
   >         return self.real.read(size)
   > 
   >     def __getattr__(self, key):
   >         return getattr(self.real, key)
   > 
   >     def __enter__(self):
   >         self.real.__enter__()
   >         return self
   > 
   >     def __exit__(self, *args, **kwargs):
   >         return self.real.__exit__(*args, **kwargs)
   > 
   > def opener(*args):
   >     o = vfs.vfs(*args)
   >     def wrapper(*a, **kwargs):
   >         f = o(*a, **kwargs)
   >         return singlebyteread(f)
   >     wrapper.options = o.options
   >     return wrapper
   > 
   > cl = changelog.changelog(opener(b'.hg/store'))
   > print(len(cl), 'revisions:')
   > for r in cl:
   >     print(pycompat.sysstr(node.short(cl.node(r))))
   > EOF
   $ "$PYTHON" test.py
   2 revisions:
   7c31755bf9b5
   26333235a41c
 
   $ cd ..
 
 #if no-pure
 
 Test SEGV caused by bad revision passed to reachableroots() (issue4775):
 
   $ cd a
 
   $ "$PYTHON" <<EOF
   > from mercurial import changelog, vfs
   > cl = changelog.changelog(vfs.vfs(b'.hg/store'))
   > print('good heads:')
   > for head in [0, len(cl) - 1, -1]:
   >     print('%s: %r' % (head, cl.reachableroots(0, [head], [0])))
   > print('bad heads:')
   > for head in [len(cl), 10000, -2, -10000, None]:
   >     print('%s:' % head, end=' ')
   >     try:
   >         cl.reachableroots(0, [head], [0])
   >         print('uncaught buffer overflow?')
   >     except (IndexError, TypeError) as inst:
   >         print(inst)
   > print('good roots:')
   > for root in [0, len(cl) - 1, -1]:
   >     print('%s: %r' % (root, cl.reachableroots(root, [len(cl) - 1], [root])))
   > print('out-of-range roots are ignored:')
   > for root in [len(cl), 10000, -2, -10000]:
   >     print('%s: %r' % (root, cl.reachableroots(root, [len(cl) - 1], [root])))
   > print('bad roots:')
   > for root in [None]:
   >     print('%s:' % root, end=' ')
   >     try:
   >         cl.reachableroots(root, [len(cl) - 1], [root])
   >         print('uncaught error?')
   >     except TypeError as inst:
   >         print(inst)
   > EOF
   good heads:
   0: [0]
   1: [0]
   -1: []
   bad heads:
   2: head out of range
   10000: head out of range
   -2: head out of range
   -10000: head out of range
   None: (an integer is required( .got type NoneType.)?|'NoneType' object cannot be interpreted as an integer) (re)
   good roots:
   0: [0]
   1: [1]
   -1: [-1]
   out-of-range roots are ignored:
   2: []
   10000: []
   -2: []
   -10000: []
   bad roots:
   None: (an integer is required( .got type NoneType.)?|'NoneType' object cannot be interpreted as an integer) (re)
 
   $ cd ..
 
 Test corrupted p1/p2 fields that could cause SEGV at parsers.c:
 
   $ mkdir invalidparent
   $ cd invalidparent
 
   $ hg clone --pull -q --config phases.publish=False ../a limit --config format.sparse-revlog=no
   $ hg clone --pull -q --config phases.publish=False ../a neglimit --config format.sparse-revlog=no
   $ hg clone --pull -q --config phases.publish=False ../a segv --config format.sparse-revlog=no
   $ rm -R limit/.hg/cache neglimit/.hg/cache segv/.hg/cache
 
   $ "$PYTHON" <<EOF
   > data = open("limit/.hg/store/00changelog.i", "rb").read()
   > poisons = [
   >     (b'limit', b'\0\0\0\x02'),
   >     (b'neglimit', b'\xff\xff\xff\xfe'),
   >     (b'segv', b'\0\x01\0\0'),
   > ]
   > for n, p in poisons:
   >     # corrupt p1 at rev0 and p2 at rev1
   >     d = data[:24] + p + data[28:127 + 28] + p + data[127 + 32:]
   >     open(n + b"/.hg/store/00changelog.i", "wb").write(d)
   > EOF
 
   $ hg -R limit debugrevlogindex -f1 -c
      rev flag     size   link     p1     p2       nodeid
        0 0000       62      0      2     -1 7c31755bf9b5
        1 0000       65      1      0      2 26333235a41c
 
   $ hg -R limit debugdeltachain -c
-      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
-        0       2      -1       1        1       -1    base         63         62         63   1.01613        63         0    0.00000
-        1       0       2       2        1       -1    base         66         65         66   1.01538        66         0    0.00000
+      rev      p1      p2  chain# chainlen     prev   delta
+        0       2      -1       1        1       -1    base
+        1       0       2       2        1       -1    base
 
   $ hg -R neglimit debugrevlogindex -f1 -c
      rev flag     size   link     p1     p2       nodeid
        0 0000       62      0     -2     -1 7c31755bf9b5
        1 0000       65      1      0     -2 26333235a41c
 
   $ hg -R segv debugrevlogindex -f1 -c
      rev flag     size   link     p1     p2       nodeid
        0 0000       62      0  65536     -1 7c31755bf9b5
        1 0000       65      1      0  65536 26333235a41c
 
   $ hg -R segv debugdeltachain -c
-      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
-        0   65536      -1       1        1       -1    base         63         62         63   1.01613        63         0    0.00000
-        1       0   65536       2        1       -1    base         66         65         66   1.01538        66         0    0.00000
+      rev      p1      p2  chain# chainlen     prev   delta
+        0   65536      -1       1        1       -1    base
+        1       0   65536       2        1       -1    base
 
   $ cat <<EOF > test.py
   > import sys
   > from mercurial import changelog, pycompat, vfs
   > cl = changelog.changelog(vfs.vfs(pycompat.fsencode(sys.argv[1])))
   > n0, n1 = cl.node(0), cl.node(1)
   > ops = [
   >     ('reachableroots',
   >      lambda: cl.index.reachableroots2(0, [1], [0], False)),
   >     ('compute_phases_map_sets', lambda: cl.computephases({1: {cl.node(0)}})),
   >     ('index_headrevs', lambda: cl.headrevs()),
   >     ('find_gca_candidates', lambda: cl.commonancestorsheads(n0, n1)),
   >     ('find_deepest', lambda: cl.ancestor(n0, n1)),
   >     ]
   > for l, f in ops:
   >     print(l + ':', end=' ')
   >     try:
   >         f()
   >         print('uncaught buffer overflow?')
   >     except ValueError as inst:
   >         print(inst)
   > EOF
 
   $ "$PYTHON" test.py limit/.hg/store
   reachableroots: parent out of range
   compute_phases_map_sets: parent out of range
   index_headrevs: parent out of range
   find_gca_candidates: parent out of range
   find_deepest: parent out of range
   $ "$PYTHON" test.py neglimit/.hg/store
   reachableroots: parent out of range
   compute_phases_map_sets: parent out of range
   index_headrevs: parent out of range
   find_gca_candidates: parent out of range
   find_deepest: parent out of range
   $ "$PYTHON" test.py segv/.hg/store
   reachableroots: parent out of range
   compute_phases_map_sets: parent out of range
   index_headrevs: parent out of range
   find_gca_candidates: parent out of range
   find_deepest: parent out of range
 
   $ cd ..
 
 #endif

tests/test-revlog.t

@@ -1,89 +1,89 b''
   $ hg init empty-repo
   $ cd empty-repo
 
 Flags on revlog version 0 are rejected
 
   >>> with open('.hg/store/00changelog.i', 'wb') as fh:
   ...     fh.write(b'\x00\x01\x00\x00') and None
 
   $ hg log
   abort: unknown flags (0x01) in version 0 revlog 00changelog
   [50]
 
 Unknown flags on revlog version 1 are rejected
 
   >>> with open('.hg/store/00changelog.i', 'wb') as fh:
   ...     fh.write(b'\x00\x04\x00\x01') and None
 
   $ hg log
   abort: unknown flags (0x04) in version 1 revlog 00changelog
   [50]
 
 Unknown version is rejected
 
   >>> with open('.hg/store/00changelog.i', 'wb') as fh:
   ...     fh.write(b'\x00\x00\xbe\xef') and None
 
   $ hg log
   abort: unknown version (48879) in revlog 00changelog
   [50]
 
   $ cd ..
 
 Test for CVE-2016-3630
 
   $ mkdir test2; cd test2
   $ hg init
 
   >>> import codecs
   >>> open("a.i", "wb").write(codecs.decode(codecs.decode(
   ... b"""eJxjYGZgZIAAYQYGxhgom+k/FMx8YKx9ZUaKSOyqo4cnuKb8mbqHV5cBCVTMWb1Cwqkhe4Gsg9AD
   ... Joa3dYtcYYYBAQ8Qr4OqZAYRICPTSr5WKd/42rV36d+8/VmrNpv7NP1jQAXrQE4BqQUARngwVA==""",
   ... "base64"), "zlib")) and None
 
   $ hg debugrevlogindex a.i
      rev linkrev nodeid       p1           p2
        0       2 99e0332bd498 000000000000 000000000000
        1       3 6674f57a23d8 99e0332bd498 000000000000
 
   >>> from mercurial.revlogutils.constants import KIND_OTHER
   >>> from mercurial import revlog, vfs
   >>> tvfs = vfs.vfs(b'.')
   >>> tvfs.options = {b'revlogv1': True}
   >>> rl = revlog.revlog(tvfs, target=(KIND_OTHER, b'test'), radix=b'a')
   >>> rl.revision(1)
   mpatchError(*'patch cannot be decoded'*) (glob)
 
   $ cd ..
 
 
 Regression test for support for the old repos with strange diff encoding.
 Apparently it used to be possible (maybe it's still possible, but we don't know how)
 to create commits whose diffs are encoded relative to a nullrev.
 This test checks that a repo with that encoding can still be read.
 
 This is what we did to produce the repo in test-revlog-diff-relative-to-nullrev.tar:
 
 - tweak the code in mercurial/revlogutils/deltas.py to produce such "trivial" deltas:
 >          if deltainfo is None:
 > -            deltainfo = self._fullsnapshotinfo(fh, revinfo, target_rev)
 > +            deltainfo = self._builddeltainfo(revinfo, nullrev, fh)
 - hg init
 - echo hi > a
 - hg commit -Am_
 - remove some cache files
 
   $ tar -xf - < "$TESTDIR"/bundles/test-revlog-diff-relative-to-nullrev.tar
   $ cd nullrev-diff
   $ hg debugdeltachain a
-      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio   readsize largestblk rddensity srchunks
-        0      -1      -1       1        2       -1      p1         15          3         15   5.00000        15         0    0.00000         15         15   1.00000        1
-        1       0      -1       1        2       -1      p2         15          3         15   5.00000        30        15    1.00000         30         30   0.50000        1
-        2      -1      -1       1        2       -1      p1         15          3         15   5.00000        45        30    2.00000         45         45   0.33333        1
+      rev      p1      p2  chain# chainlen     prev   delta
+        0      -1      -1       1        2       -1      p1
+        1       0      -1       1        2       -1      p2
+        2      -1      -1       1        2       -1      p1
   $ hg cat --config rhg.cat=true -r 0 a
   hi
   $ hg cat --config rhg.cat=true -r 1 a
   ho
   $ hg cat --config rhg.cat=true -r 2 a
   ha
   $ cd ..

tests/test-sparse-revlog.t

@@ -1,326 +1,326 b''
 ====================================
 Test delta choice with sparse revlog
 ====================================
 
 Sparse-revlog usually shows the most gain on Manifest. However, it is simpler
 to general an appropriate file, so we test with a single file instead. The
 goal is to observe intermediate snapshot being created.
 
 We need a large enough file. Part of the content needs to be replaced
 repeatedly while some of it changes rarely.
 
   $ bundlepath="$TESTDIR/artifacts/cache/big-file-churn.hg"
 
   $ expectedhash=`cat "$bundlepath".md5`
 
 #if slow
 
   $ if [ ! -f "$bundlepath" ]; then
   >     "$TESTDIR"/artifacts/scripts/generate-churning-bundle.py > /dev/null
   > fi
 
 #else
 
   $ if [ ! -f "$bundlepath" ]; then
   >     echo 'skipped: missing artifact, run "'"$TESTDIR"'/artifacts/scripts/generate-churning-bundle.py"'
   >     exit 80
   > fi
 
 #endif
 
   $ currenthash=`f -M "$bundlepath" | cut -d = -f 2`
   $ if [ "$currenthash" != "$expectedhash" ]; then
   >     echo 'skipped: outdated artifact, md5 "'"$currenthash"'" expected "'"$expectedhash"'" run "'"$TESTDIR"'/artifacts/scripts/generate-churning-bundle.py"'
   >     exit 80
   > fi
 
   $ cat >> $HGRCPATH << EOF
   > [format]
   > sparse-revlog = yes
   > maxchainlen = 15
   > [storage]
   > revlog.optimize-delta-parent-choice = yes
   > revlog.reuse-external-delta = no
   > EOF
   $ hg init sparse-repo
   $ cd sparse-repo
   $ hg unbundle $bundlepath
   adding changesets
   adding manifests
   adding file changes
   added 5001 changesets with 5001 changes to 1 files (+89 heads)
   new changesets 9706f5af64f4:d9032adc8114 (5001 drafts)
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg up
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   updated to "d9032adc8114: commit #5000"
   89 other heads for branch "default"
 
   $ hg log --stat -r 0:3
   changeset:   0:9706f5af64f4
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     initial commit
   
    SPARSE-REVLOG-TEST-FILE |  10500 ++++++++++++++++++++++++++++++++++++++++++++++
    1 files changed, 10500 insertions(+), 0 deletions(-)
   
   changeset:   1:724907deaa5e
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit #1
   
    SPARSE-REVLOG-TEST-FILE |  1068 +++++++++++++++++++++++-----------------------
    1 files changed, 534 insertions(+), 534 deletions(-)
   
   changeset:   2:62c41bce3e5d
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit #2
   
    SPARSE-REVLOG-TEST-FILE |  1068 +++++++++++++++++++++++-----------------------
    1 files changed, 534 insertions(+), 534 deletions(-)
   
   changeset:   3:348a9cbd6959
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit #3
   
    SPARSE-REVLOG-TEST-FILE |  1068 +++++++++++++++++++++++-----------------------
    1 files changed, 534 insertions(+), 534 deletions(-)
   
 
   $ f -s .hg/store/data/*.d
   .hg/store/data/_s_p_a_r_s_e-_r_e_v_l_o_g-_t_e_s_t-_f_i_l_e.d: size=58616973
   $ hg debugrevlog *
   format : 1
   flags  : generaldelta
   
   revisions     :     5001
       merges    :      625 (12.50%)
       normal    :     4376 (87.50%)
   revisions     :     5001
       empty     :        0 ( 0.00%)
                      text  :        0 (100.00%)
                      delta :        0 (100.00%)
       snapshot  :      383 ( 7.66%)
         lvl-0   :              3 ( 0.06%)
         lvl-1   :             18 ( 0.36%)  non-ancestor-bases:        9 (50.00%)
         lvl-2   :             62 ( 1.24%)  non-ancestor-bases:       58 (93.55%)
         lvl-3   :            108 ( 2.16%)  non-ancestor-bases:      108 (100.00%)
         lvl-4   :            191 ( 3.82%)  non-ancestor-bases:      180 (94.24%)
         lvl-5   :              1 ( 0.02%)  non-ancestor-bases:        1 (100.00%)
       deltas    :     4618 (92.34%)
   revision size : 58616973
       snapshot  :  9247844 (15.78%)
         lvl-0   :         539532 ( 0.92%)
         lvl-1   :        1467743 ( 2.50%)
         lvl-2   :        1873820 ( 3.20%)
         lvl-3   :        2326874 ( 3.97%)
         lvl-4   :        3029118 ( 5.17%)
         lvl-5   :          10757 ( 0.02%)
       deltas    : 49369129 (84.22%)
   
   chunks        :     5001
       0x28      :     5001 (100.00%)
   chunks size   : 58616973
       0x28      : 58616973 (100.00%)
   
   
   total-stored-content: 1 732 705 361 bytes
   
   avg chain length  :        9
   max chain length  :       15
   max chain reach   : 27366701
   compression ratio :       29
   
   uncompressed data size (min/max/avg) : 346468 / 346472 / 346471
   full revision size (min/max/avg)     : 179288 / 180786 / 179844
   inter-snapshot size (min/max/avg)    : 10757 / 169507 / 22916
       level-1   (min/max/avg)          : 13905 / 169507 / 81541
       level-2   (min/max/avg)          : 10887 / 83873 / 30222
       level-3   (min/max/avg)          : 10911 / 43047 / 21545
       level-4   (min/max/avg)          : 10838 / 21390 / 15859
       level-5   (min/max/avg)          : 10757 / 10757 / 10757
   delta size (min/max/avg)             : 9672 / 108072 / 10690
   
   deltas against prev  : 3906 (84.58%)
       where prev = p1  : 3906     (100.00%)
       where prev = p2  :    0     ( 0.00%)
       other-ancestor   :    0     ( 0.00%)
       unrelated        :    0     ( 0.00%)
   deltas against p1    :  649 (14.05%)
   deltas against p2    :   63 ( 1.36%)
   deltas against ancs  :    0 ( 0.00%)
   deltas against other :    0 ( 0.00%)
 
 
 Test `debug-delta-find`
 -----------------------
 
   $ ls -1
   SPARSE-REVLOG-TEST-FILE
   $ hg debugdeltachain SPARSE-REVLOG-TEST-FILE | grep snap | tail -1
-     4971    4970      -1       3        5     4930    snap      19179     346472     427596   1.23414  15994877  15567281   36.40652     427596     179288   1.00000        5
+     4971    4970      -1       3        5     4930    snap
   $ hg debug-delta-find SPARSE-REVLOG-TEST-FILE 4971
   DBG-DELTAS-SEARCH: SEARCH rev=4971
   DBG-DELTAS-SEARCH: ROUND #1 - 1 candidates - search-down
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4962
   DBG-DELTAS-SEARCH:     type=snapshot-4
   DBG-DELTAS-SEARCH:     size=18296
   DBG-DELTAS-SEARCH:     base=4930
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=30377
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=16872 (BAD)
   DBG-DELTAS-SEARCH: ROUND #2 - 1 candidates - search-down
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4930
   DBG-DELTAS-SEARCH:     type=snapshot-3
   DBG-DELTAS-SEARCH:     size=39228
   DBG-DELTAS-SEARCH:     base=4799
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=33050
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=19179 (GOOD)
   DBG-DELTAS-SEARCH: ROUND #3 - 1 candidates - refine-down
   DBG-DELTAS-SEARCH:   CONTENDER: rev=4930 - length=19179
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4799
   DBG-DELTAS-SEARCH:     type=snapshot-2
   DBG-DELTAS-SEARCH:     size=50213
   DBG-DELTAS-SEARCH:     base=4623
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=82661
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=49132 (BAD)
   DBG-DELTAS: FILELOG:SPARSE-REVLOG-TEST-FILE: rev=4971: delta-base=4930 is-cached=0 - search-rounds=3 try-count=3 - delta-type=snapshot snap-depth=4 - p1-chain-length=15 p2-chain-length=-1 - duration=* (glob)
 
   $ cat << EOF >>.hg/hgrc
   > [storage]
   > revlog.optimize-delta-parent-choice = no
   > revlog.reuse-external-delta = yes
   > EOF
 
   $ hg debug-delta-find SPARSE-REVLOG-TEST-FILE 4971 --quiet
   DBG-DELTAS: FILELOG:SPARSE-REVLOG-TEST-FILE: rev=4971: delta-base=4930 is-cached=0 - search-rounds=3 try-count=3 - delta-type=snapshot snap-depth=4 - p1-chain-length=15 p2-chain-length=-1 - duration=* (glob)
   $ hg debug-delta-find SPARSE-REVLOG-TEST-FILE 4971 --source full
   DBG-DELTAS-SEARCH: SEARCH rev=4971
   DBG-DELTAS-SEARCH: ROUND #1 - 1 candidates - search-down
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4962
   DBG-DELTAS-SEARCH:     type=snapshot-4
   DBG-DELTAS-SEARCH:     size=18296
   DBG-DELTAS-SEARCH:     base=4930
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=30377
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=16872 (BAD)
   DBG-DELTAS-SEARCH: ROUND #2 - 1 candidates - search-down
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4930
   DBG-DELTAS-SEARCH:     type=snapshot-3
   DBG-DELTAS-SEARCH:     size=39228
   DBG-DELTAS-SEARCH:     base=4799
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=33050
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=19179 (GOOD)
   DBG-DELTAS-SEARCH: ROUND #3 - 1 candidates - refine-down
   DBG-DELTAS-SEARCH:   CONTENDER: rev=4930 - length=19179
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4799
   DBG-DELTAS-SEARCH:     type=snapshot-2
   DBG-DELTAS-SEARCH:     size=50213
   DBG-DELTAS-SEARCH:     base=4623
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=82661
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=49132 (BAD)
   DBG-DELTAS: FILELOG:SPARSE-REVLOG-TEST-FILE: rev=4971: delta-base=4930 is-cached=0 - search-rounds=3 try-count=3 - delta-type=snapshot snap-depth=4 - p1-chain-length=15 p2-chain-length=-1 - duration=* (glob)
   $ hg debug-delta-find SPARSE-REVLOG-TEST-FILE 4971 --source storage
   DBG-DELTAS-SEARCH: SEARCH rev=4971
   DBG-DELTAS-SEARCH: ROUND #1 - 1 candidates - cached-delta
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4930
   DBG-DELTAS-SEARCH:     type=snapshot-3
   DBG-DELTAS-SEARCH:     size=39228
   DBG-DELTAS-SEARCH:     base=4799
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=33050
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=19179 (GOOD)
   DBG-DELTAS: FILELOG:SPARSE-REVLOG-TEST-FILE: rev=4971: delta-base=4930 is-cached=1 - search-rounds=1 try-count=1 - delta-type=snapshot snap-depth=4 - p1-chain-length=15 p2-chain-length=-1 - duration=* (glob)
   $ hg debug-delta-find SPARSE-REVLOG-TEST-FILE 4971 --source p1
   DBG-DELTAS-SEARCH: SEARCH rev=4971
   DBG-DELTAS-SEARCH: ROUND #1 - 1 candidates - search-down
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4962
   DBG-DELTAS-SEARCH:     type=snapshot-4
   DBG-DELTAS-SEARCH:     size=18296
   DBG-DELTAS-SEARCH:     base=4930
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=30377
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=16872 (BAD)
   DBG-DELTAS-SEARCH: ROUND #2 - 1 candidates - search-down
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4930
   DBG-DELTAS-SEARCH:     type=snapshot-3
   DBG-DELTAS-SEARCH:     size=39228
   DBG-DELTAS-SEARCH:     base=4799
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=33050
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=19179 (GOOD)
   DBG-DELTAS-SEARCH: ROUND #3 - 1 candidates - refine-down
   DBG-DELTAS-SEARCH:   CONTENDER: rev=4930 - length=19179
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4799
   DBG-DELTAS-SEARCH:     type=snapshot-2
   DBG-DELTAS-SEARCH:     size=50213
   DBG-DELTAS-SEARCH:     base=4623
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=82661
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=49132 (BAD)
   DBG-DELTAS: FILELOG:SPARSE-REVLOG-TEST-FILE: rev=4971: delta-base=4930 is-cached=0 - search-rounds=3 try-count=3 - delta-type=snapshot snap-depth=4 - p1-chain-length=15 p2-chain-length=-1 - duration=* (glob)
   $ hg debug-delta-find SPARSE-REVLOG-TEST-FILE 4971 --source p2
   DBG-DELTAS-SEARCH: SEARCH rev=4971
   DBG-DELTAS-SEARCH: ROUND #1 - 1 candidates - search-down
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4962
   DBG-DELTAS-SEARCH:     type=snapshot-4
   DBG-DELTAS-SEARCH:     size=18296
   DBG-DELTAS-SEARCH:     base=4930
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=30377
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=16872 (BAD)
   DBG-DELTAS-SEARCH: ROUND #2 - 1 candidates - search-down
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4930
   DBG-DELTAS-SEARCH:     type=snapshot-3
   DBG-DELTAS-SEARCH:     size=39228
   DBG-DELTAS-SEARCH:     base=4799
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=33050
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=19179 (GOOD)
   DBG-DELTAS-SEARCH: ROUND #3 - 1 candidates - refine-down
   DBG-DELTAS-SEARCH:   CONTENDER: rev=4930 - length=19179
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4799
   DBG-DELTAS-SEARCH:     type=snapshot-2
   DBG-DELTAS-SEARCH:     size=50213
   DBG-DELTAS-SEARCH:     base=4623
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=82661
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=49132 (BAD)
   DBG-DELTAS: FILELOG:SPARSE-REVLOG-TEST-FILE: rev=4971: delta-base=4930 is-cached=0 - search-rounds=3 try-count=3 - delta-type=snapshot snap-depth=4 - p1-chain-length=15 p2-chain-length=-1 - duration=* (glob)
   $ hg debug-delta-find SPARSE-REVLOG-TEST-FILE 4971 --source prev
   DBG-DELTAS-SEARCH: SEARCH rev=4971
   DBG-DELTAS-SEARCH: ROUND #1 - 1 candidates - search-down
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4962
   DBG-DELTAS-SEARCH:     type=snapshot-4
   DBG-DELTAS-SEARCH:     size=18296
   DBG-DELTAS-SEARCH:     base=4930
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=30377
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=16872 (BAD)
   DBG-DELTAS-SEARCH: ROUND #2 - 1 candidates - search-down
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4930
   DBG-DELTAS-SEARCH:     type=snapshot-3
   DBG-DELTAS-SEARCH:     size=39228
   DBG-DELTAS-SEARCH:     base=4799
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=33050
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=19179 (GOOD)
   DBG-DELTAS-SEARCH: ROUND #3 - 1 candidates - refine-down
   DBG-DELTAS-SEARCH:   CONTENDER: rev=4930 - length=19179
   DBG-DELTAS-SEARCH:   CANDIDATE: rev=4799
   DBG-DELTAS-SEARCH:     type=snapshot-2
   DBG-DELTAS-SEARCH:     size=50213
   DBG-DELTAS-SEARCH:     base=4623
   DBG-DELTAS-SEARCH:     uncompressed-delta-size=82661
   DBG-DELTAS-SEARCH:     delta-search-time=* (glob)
   DBG-DELTAS-SEARCH:     DELTA: length=49132 (BAD)
   DBG-DELTAS: FILELOG:SPARSE-REVLOG-TEST-FILE: rev=4971: delta-base=4930 is-cached=0 - search-rounds=3 try-count=3 - delta-type=snapshot snap-depth=4 - p1-chain-length=15 p2-chain-length=-1 - duration=* (glob)
 
   $ cd ..

tests/test-upgrade-repo.t

@@ -1,2103 +1,2103 b''
 #require no-reposimplestore
 
   $ cat >> $HGRCPATH << EOF
   > [extensions]
   > share =
   > [format]
   > # stabilize test accross variant
   > revlog-compression=zlib
   > [storage]
   > dirstate-v2.slow-path=allow
   > EOF
 
 store and revlogv1 are required in source
 
   $ hg --config format.usestore=false init no-store
   $ hg -R no-store debugupgraderepo
   abort: cannot upgrade repository; requirement missing: store
   [255]
 
   $ hg init no-revlogv1
   $ cat > no-revlogv1/.hg/requires << EOF
   > dotencode
   > fncache
   > generaldelta
   > store
   > EOF
 
   $ hg -R no-revlogv1 debugupgraderepo
   abort: cannot upgrade repository; missing a revlog version
   [255]
 
 Cannot upgrade shared repositories
 
   $ hg init share-parent
   $ hg -R share-parent debugbuilddag -n .+9
   $ hg -R share-parent up tip
   10 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -q share share-parent share-child
 
   $ hg -R share-child debugupgraderepo --config format.sparse-revlog=no
   abort: cannot use these actions on a share repository: sparserevlog
   (upgrade the main repository directly)
   [255]
 
 Unless the action is compatible with share
 
   $ hg -R share-child debugupgraderepo --config format.use-dirstate-v2=yes --quiet
   requirements
      preserved: * (glob)
      added: dirstate-v2
   
   no revlogs to process
   
 
   $ hg -R share-child debugupgraderepo --config format.use-dirstate-v2=yes --quiet --run
   upgrade will perform the following actions:
   
   requirements
      preserved: * (glob)
      added: dirstate-v2
   
   no revlogs to process
   
   $ hg debugformat -R share-child | grep dirstate-v2
   dirstate-v2:        yes
   $ hg debugformat -R share-parent | grep dirstate-v2
   dirstate-v2:         no
   $ hg status --all -R share-child
   C nf0
   C nf1
   C nf2
   C nf3
   C nf4
   C nf5
   C nf6
   C nf7
   C nf8
   C nf9
   $ hg log -l 3 -R share-child
   changeset:   9:0059eb38e4a4
   tag:         tip
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:09 1970 +0000
   summary:     r9
   
   changeset:   8:4d5be70c8130
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:08 1970 +0000
   summary:     r8
   
   changeset:   7:e60bfe72517e
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:07 1970 +0000
   summary:     r7
   
   $ hg status --all -R share-parent
   C nf0
   C nf1
   C nf2
   C nf3
   C nf4
   C nf5
   C nf6
   C nf7
   C nf8
   C nf9
   $ hg log -l 3 -R share-parent
   changeset:   9:0059eb38e4a4
   tag:         tip
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:09 1970 +0000
   summary:     r9
   
   changeset:   8:4d5be70c8130
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:08 1970 +0000
   summary:     r8
   
   changeset:   7:e60bfe72517e
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:07 1970 +0000
   summary:     r7
   
 
   $ hg -R share-child debugupgraderepo --config format.use-dirstate-v2=no --quiet --run
   upgrade will perform the following actions:
   
   requirements
      preserved: * (glob)
      removed: dirstate-v2
   
   no revlogs to process
   
   $ hg debugformat -R share-child | grep dirstate-v2
   dirstate-v2:         no
   $ hg debugformat -R share-parent | grep dirstate-v2
   dirstate-v2:         no
   $ hg status --all -R share-child
   C nf0
   C nf1
   C nf2
   C nf3
   C nf4
   C nf5
   C nf6
   C nf7
   C nf8
   C nf9
   $ hg log -l 3 -R share-child
   changeset:   9:0059eb38e4a4
   tag:         tip
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:09 1970 +0000
   summary:     r9
   
   changeset:   8:4d5be70c8130
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:08 1970 +0000
   summary:     r8
   
   changeset:   7:e60bfe72517e
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:07 1970 +0000
   summary:     r7
   
   $ hg status --all -R share-parent
   C nf0
   C nf1
   C nf2
   C nf3
   C nf4
   C nf5
   C nf6
   C nf7
   C nf8
   C nf9
   $ hg log -l 3 -R share-parent
   changeset:   9:0059eb38e4a4
   tag:         tip
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:09 1970 +0000
   summary:     r9
   
   changeset:   8:4d5be70c8130
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:08 1970 +0000
   summary:     r8
   
   changeset:   7:e60bfe72517e
   user:        debugbuilddag
   date:        Thu Jan 01 00:00:07 1970 +0000
   summary:     r7
   
 
 Do not yet support downgrading treemanifest repos
 
   $ hg --config experimental.treemanifest=true init treemanifest
   $ hg -R treemanifest debugupgraderepo
   abort: cannot upgrade repository; requirement would be removed: treemanifest
   [255]
 
 Cannot add treemanifest requirement during upgrade
 
   $ hg init disallowaddedreq
   $ hg -R disallowaddedreq --config experimental.treemanifest=true debugupgraderepo
   abort: cannot upgrade repository; do not support adding requirement: treemanifest
   [255]
 
 An upgrade of a repository created with recommended settings only suggests optimizations
 
   $ hg init empty
   $ cd empty
   $ hg debugformat
   format-variant     repo
   fncache:            yes
   dirstate-v2:         no
   tracked-hint:        no
   dotencode:          yes
   generaldelta:       yes
   share-safe:         yes
   sparserevlog:       yes
   persistent-nodemap:  no (no-rust !)
   persistent-nodemap: yes (rust !)
   copies-sdc:          no
   revlog-v2:           no
   changelog-v2:        no
   plain-cl-delta:     yes
   compression:        zlib
   compression-level:  default
   $ hg debugformat --verbose
   format-variant     repo config default
   fncache:            yes    yes     yes
   dirstate-v2:         no     no      no
   tracked-hint:        no     no      no
   dotencode:          yes    yes     yes
   generaldelta:       yes    yes     yes
   share-safe:         yes    yes     yes
   sparserevlog:       yes    yes     yes
   persistent-nodemap:  no     no      no (no-rust !)
   persistent-nodemap: yes    yes      no (rust !)
   copies-sdc:          no     no      no
   revlog-v2:           no     no      no
   changelog-v2:        no     no      no
   plain-cl-delta:     yes    yes     yes
   compression:        zlib   zlib    zlib (no-zstd !)
   compression:        zlib   zlib    zstd (zstd !)
   compression-level:  default default default
   $ hg debugformat --verbose --config format.usefncache=no
   format-variant     repo config default
   fncache:            yes     no     yes
   dirstate-v2:         no     no      no
   tracked-hint:        no     no      no
   dotencode:          yes     no     yes
   generaldelta:       yes    yes     yes
   share-safe:         yes    yes     yes
   sparserevlog:       yes    yes     yes
   persistent-nodemap:  no     no      no (no-rust !)
   persistent-nodemap: yes    yes      no (rust !)
   copies-sdc:          no     no      no
   revlog-v2:           no     no      no
   changelog-v2:        no     no      no
   plain-cl-delta:     yes    yes     yes
   compression:        zlib   zlib    zlib (no-zstd !)
   compression:        zlib   zlib    zstd (zstd !)
   compression-level:  default default default
   $ hg debugformat --verbose --config format.usefncache=no --color=debug
   format-variant     repo config default
   [formatvariant.name.mismatchconfig|fncache:           ][formatvariant.repo.mismatchconfig| yes][formatvariant.config.special|     no][formatvariant.default|     yes]
   [formatvariant.name.uptodate|dirstate-v2:       ][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no]
   [formatvariant.name.uptodate|tracked-hint:      ][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no]
   [formatvariant.name.mismatchconfig|dotencode:         ][formatvariant.repo.mismatchconfig| yes][formatvariant.config.special|     no][formatvariant.default|     yes]
   [formatvariant.name.uptodate|generaldelta:      ][formatvariant.repo.uptodate| yes][formatvariant.config.default|    yes][formatvariant.default|     yes]
   [formatvariant.name.uptodate|share-safe:        ][formatvariant.repo.uptodate| yes][formatvariant.config.default|    yes][formatvariant.default|     yes]
   [formatvariant.name.uptodate|sparserevlog:      ][formatvariant.repo.uptodate| yes][formatvariant.config.default|    yes][formatvariant.default|     yes]
   [formatvariant.name.uptodate|persistent-nodemap:][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no] (no-rust !)
   [formatvariant.name.mismatchdefault|persistent-nodemap:][formatvariant.repo.mismatchdefault| yes][formatvariant.config.special|    yes][formatvariant.default|      no] (rust !)
   [formatvariant.name.uptodate|copies-sdc:        ][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no]
   [formatvariant.name.uptodate|revlog-v2:         ][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no]
   [formatvariant.name.uptodate|changelog-v2:      ][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no]
   [formatvariant.name.uptodate|plain-cl-delta:    ][formatvariant.repo.uptodate| yes][formatvariant.config.default|    yes][formatvariant.default|     yes]
   [formatvariant.name.uptodate|compression:       ][formatvariant.repo.uptodate| zlib][formatvariant.config.default|   zlib][formatvariant.default|    zlib] (no-zstd !)
   [formatvariant.name.mismatchdefault|compression:       ][formatvariant.repo.mismatchdefault| zlib][formatvariant.config.special|   zlib][formatvariant.default|    zstd] (zstd !)
   [formatvariant.name.uptodate|compression-level: ][formatvariant.repo.uptodate| default][formatvariant.config.default| default][formatvariant.default| default]
   $ hg debugformat -Tjson
   [
    {
     "config": true,
     "default": true,
     "name": "fncache",
     "repo": true
    },
    {
     "config": false,
     "default": false,
     "name": "dirstate-v2",
     "repo": false
    },
    {
     "config": false,
     "default": false,
     "name": "tracked-hint",
     "repo": false
    },
    {
     "config": true,
     "default": true,
     "name": "dotencode",
     "repo": true
    },
    {
     "config": true,
     "default": true,
     "name": "generaldelta",
     "repo": true
    },
    {
     "config": true,
     "default": true,
     "name": "share-safe",
     "repo": true
    },
    {
     "config": true,
     "default": true,
     "name": "sparserevlog",
     "repo": true
    },
    {
     "config": false, (no-rust !)
     "config": true, (rust !)
     "default": false,
     "name": "persistent-nodemap",
     "repo": false (no-rust !)
     "repo": true (rust !)
    },
    {
     "config": false,
     "default": false,
     "name": "copies-sdc",
     "repo": false
    },
    {
     "config": false,
     "default": false,
     "name": "revlog-v2",
     "repo": false
    },
    {
     "config": false,
     "default": false,
     "name": "changelog-v2",
     "repo": false
    },
    {
     "config": true,
     "default": true,
     "name": "plain-cl-delta",
     "repo": true
    },
    {
     "config": "zlib",
     "default": "zlib", (no-zstd !)
     "default": "zstd", (zstd !)
     "name": "compression",
     "repo": "zlib"
    },
    {
     "config": "default",
     "default": "default",
     "name": "compression-level",
     "repo": "default"
    }
   ]
   $ hg debugupgraderepo
   (no format upgrades found in existing repository)
   performing an upgrade with "--run" will make the following changes:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   no revlogs to process
   
   additional optimizations are available by specifying "--optimize <name>":
   
   re-delta-parent
      deltas within internal storage will be recalculated to choose an optimal base revision where this was not already done; the size of the repository may shrink and various operations may become faster; the first time this optimization is performed could slow down upgrade execution considerably; subsequent invocations should not run noticeably slower
   
   re-delta-multibase
      deltas within internal storage will be recalculated against multiple base revision and the smallest difference will be used; the size of the repository may shrink significantly when there are many merges; this optimization will slow down execution in proportion to the number of merges in the repository and the amount of files in the repository; this slow down should not be significant unless there are tens of thousands of files and thousands of merges
   
   re-delta-all
      deltas within internal storage will always be recalculated without reusing prior deltas; this will likely make execution run several times slower; this optimization is typically not needed
   
   re-delta-fulladd
      every revision will be re-added as if it was new content. It will go through the full storage mechanism giving extensions a chance to process it (eg. lfs). This is similar to "re-delta-all" but even slower since more logic is involved.
   
 
   $ hg debugupgraderepo --quiet
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   no revlogs to process
   
 
 --optimize can be used to add optimizations
 
   $ hg debugupgrade --optimize 're-delta-parent'
   (no format upgrades found in existing repository)
   performing an upgrade with "--run" will make the following changes:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   optimisations: re-delta-parent
   
   re-delta-parent
      deltas within internal storage will choose a new base revision if needed
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   additional optimizations are available by specifying "--optimize <name>":
   
   re-delta-multibase
      deltas within internal storage will be recalculated against multiple base revision and the smallest difference will be used; the size of the repository may shrink significantly when there are many merges; this optimization will slow down execution in proportion to the number of merges in the repository and the amount of files in the repository; this slow down should not be significant unless there are tens of thousands of files and thousands of merges
   
   re-delta-all
      deltas within internal storage will always be recalculated without reusing prior deltas; this will likely make execution run several times slower; this optimization is typically not needed
   
   re-delta-fulladd
      every revision will be re-added as if it was new content. It will go through the full storage mechanism giving extensions a chance to process it (eg. lfs). This is similar to "re-delta-all" but even slower since more logic is involved.
   
 
 modern form of the option
 
   $ hg debugupgrade --optimize re-delta-parent
   (no format upgrades found in existing repository)
   performing an upgrade with "--run" will make the following changes:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   optimisations: re-delta-parent
   
   re-delta-parent
      deltas within internal storage will choose a new base revision if needed
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   additional optimizations are available by specifying "--optimize <name>":
   
   re-delta-multibase
      deltas within internal storage will be recalculated against multiple base revision and the smallest difference will be used; the size of the repository may shrink significantly when there are many merges; this optimization will slow down execution in proportion to the number of merges in the repository and the amount of files in the repository; this slow down should not be significant unless there are tens of thousands of files and thousands of merges
   
   re-delta-all
      deltas within internal storage will always be recalculated without reusing prior deltas; this will likely make execution run several times slower; this optimization is typically not needed
   
   re-delta-fulladd
      every revision will be re-added as if it was new content. It will go through the full storage mechanism giving extensions a chance to process it (eg. lfs). This is similar to "re-delta-all" but even slower since more logic is involved.
   
 
   $ hg debugupgrade --optimize re-delta-parent --quiet
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   optimisations: re-delta-parent
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
 
 passing multiple optimization:
 
   $ hg debugupgrade --optimize re-delta-parent --optimize re-delta-multibase --quiet
   requirements
      preserved: * (glob)
   
   optimisations: re-delta-multibase, re-delta-parent
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
 
 unknown optimization:
 
   $ hg debugupgrade --optimize foobar
   abort: unknown optimization action requested: foobar
   (run without arguments to see valid optimizations)
   [255]
 
 Various sub-optimal detections work
 
   $ cat > .hg/requires << EOF
   > revlogv1
   > store
   > EOF
 
   $ hg debugformat
   format-variant     repo
   fncache:             no
   dirstate-v2:         no
   tracked-hint:        no
   dotencode:           no
   generaldelta:        no
   share-safe:          no
   sparserevlog:        no
   persistent-nodemap:  no
   copies-sdc:          no
   revlog-v2:           no
   changelog-v2:        no
   plain-cl-delta:     yes
   compression:        zlib
   compression-level:  default
   $ hg debugformat --verbose
   format-variant     repo config default
   fncache:             no    yes     yes
   dirstate-v2:         no     no      no
   tracked-hint:        no     no      no
   dotencode:           no    yes     yes
   generaldelta:        no    yes     yes
   share-safe:          no    yes     yes
   sparserevlog:        no    yes     yes
   persistent-nodemap:  no     no      no (no-rust !)
   persistent-nodemap:  no    yes      no (rust !)
   copies-sdc:          no     no      no
   revlog-v2:           no     no      no
   changelog-v2:        no     no      no
   plain-cl-delta:     yes    yes     yes
   compression:        zlib   zlib    zlib (no-zstd !)
   compression:        zlib   zlib    zstd (zstd !)
   compression-level:  default default default
   $ hg debugformat --verbose --config format.usegeneraldelta=no
   format-variant     repo config default
   fncache:             no    yes     yes
   dirstate-v2:         no     no      no
   tracked-hint:        no     no      no
   dotencode:           no    yes     yes
   generaldelta:        no     no     yes
   share-safe:          no    yes     yes
   sparserevlog:        no     no     yes
   persistent-nodemap:  no     no      no (no-rust !)
   persistent-nodemap:  no    yes      no (rust !)
   copies-sdc:          no     no      no
   revlog-v2:           no     no      no
   changelog-v2:        no     no      no
   plain-cl-delta:     yes    yes     yes
   compression:        zlib   zlib    zlib (no-zstd !)
   compression:        zlib   zlib    zstd (zstd !)
   compression-level:  default default default
   $ hg debugformat --verbose --config format.usegeneraldelta=no --color=debug
   format-variant     repo config default
   [formatvariant.name.mismatchconfig|fncache:           ][formatvariant.repo.mismatchconfig|  no][formatvariant.config.default|    yes][formatvariant.default|     yes]
   [formatvariant.name.uptodate|dirstate-v2:       ][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no]
   [formatvariant.name.uptodate|tracked-hint:      ][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no]
   [formatvariant.name.mismatchconfig|dotencode:         ][formatvariant.repo.mismatchconfig|  no][formatvariant.config.default|    yes][formatvariant.default|     yes]
   [formatvariant.name.mismatchdefault|generaldelta:      ][formatvariant.repo.mismatchdefault|  no][formatvariant.config.special|     no][formatvariant.default|     yes]
   [formatvariant.name.mismatchconfig|share-safe:        ][formatvariant.repo.mismatchconfig|  no][formatvariant.config.default|    yes][formatvariant.default|     yes]
   [formatvariant.name.mismatchdefault|sparserevlog:      ][formatvariant.repo.mismatchdefault|  no][formatvariant.config.special|     no][formatvariant.default|     yes]
   [formatvariant.name.uptodate|persistent-nodemap:][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no] (no-rust !)
   [formatvariant.name.mismatchconfig|persistent-nodemap:][formatvariant.repo.mismatchconfig|  no][formatvariant.config.special|    yes][formatvariant.default|      no] (rust !)
   [formatvariant.name.uptodate|copies-sdc:        ][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no]
   [formatvariant.name.uptodate|revlog-v2:         ][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no]
   [formatvariant.name.uptodate|changelog-v2:      ][formatvariant.repo.uptodate|  no][formatvariant.config.default|     no][formatvariant.default|      no]
   [formatvariant.name.uptodate|plain-cl-delta:    ][formatvariant.repo.uptodate| yes][formatvariant.config.default|    yes][formatvariant.default|     yes]
   [formatvariant.name.uptodate|compression:       ][formatvariant.repo.uptodate| zlib][formatvariant.config.default|   zlib][formatvariant.default|    zlib] (no-zstd !)
   [formatvariant.name.mismatchdefault|compression:       ][formatvariant.repo.mismatchdefault| zlib][formatvariant.config.special|   zlib][formatvariant.default|    zstd] (zstd !)
   [formatvariant.name.uptodate|compression-level: ][formatvariant.repo.uptodate| default][formatvariant.config.default| default][formatvariant.default| default]
   $ hg debugupgraderepo
   note:    selecting all-filelogs for processing to change: dotencode
   note:    selecting all-manifestlogs for processing to change: dotencode
   note:    selecting changelog for processing to change: dotencode
   
   repository lacks features recommended by current config options:
   
   fncache
      long and reserved filenames may not work correctly; repository performance is sub-optimal
   
   dotencode
      storage of filenames beginning with a period or space may not work correctly
   
   generaldelta
      deltas within internal storage are unable to choose optimal revisions; repository is larger and slower than it could be; interaction with other repositories may require extra network and CPU resources, making "hg push" and "hg pull" slower
   
   share-safe
      old shared repositories do not share source repository requirements and config. This leads to various problems when the source repository format is upgraded or some new extensions are enabled.
   
   sparserevlog
      in order to limit disk reading and memory usage on older version, the span of a delta chain from its root to its end is limited, whatever the relevant data in this span. This can severly limit Mercurial ability to build good chain of delta resulting is much more storage space being taken and limit reusability of on disk delta during exchange.
   
   persistent-nodemap (rust !)
      persist the node -> rev mapping on disk to speedup lookup (rust !)
    (rust !)
   
   performing an upgrade with "--run" will make the following changes:
   
   requirements
      preserved: revlogv1, store
      added: dotencode, fncache, generaldelta, share-safe, sparserevlog (no-rust !)
      added: dotencode, fncache, generaldelta, persistent-nodemap, share-safe, sparserevlog (rust !)
   
   fncache
      repository will be more resilient to storing certain paths and performance of certain operations should be improved
   
   dotencode
      repository will be better able to store files beginning with a space or period
   
   generaldelta
      repository storage will be able to create optimal deltas; new repository data will be smaller and read times should decrease; interacting with other repositories using this storage model should require less network and CPU resources, making "hg push" and "hg pull" faster
   
   share-safe
      Upgrades a repository to share-safe format so that future shares of this repository share its requirements and configs.
   
   sparserevlog
      Revlog supports delta chain with more unused data between payload. These gaps will be skipped at read time. This allows for better delta chains, making a better compression and faster exchange with server.
   
   persistent-nodemap (rust !)
      Speedup revision lookup by node id. (rust !)
    (rust !)
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   additional optimizations are available by specifying "--optimize <name>":
   
   re-delta-parent
      deltas within internal storage will be recalculated to choose an optimal base revision where this was not already done; the size of the repository may shrink and various operations may become faster; the first time this optimization is performed could slow down upgrade execution considerably; subsequent invocations should not run noticeably slower
   
   re-delta-multibase
      deltas within internal storage will be recalculated against multiple base revision and the smallest difference will be used; the size of the repository may shrink significantly when there are many merges; this optimization will slow down execution in proportion to the number of merges in the repository and the amount of files in the repository; this slow down should not be significant unless there are tens of thousands of files and thousands of merges
   
   re-delta-all
      deltas within internal storage will always be recalculated without reusing prior deltas; this will likely make execution run several times slower; this optimization is typically not needed
   
   re-delta-fulladd
      every revision will be re-added as if it was new content. It will go through the full storage mechanism giving extensions a chance to process it (eg. lfs). This is similar to "re-delta-all" but even slower since more logic is involved.
   
   $ hg debugupgraderepo --quiet
   requirements
      preserved: revlogv1, store
      added: dotencode, fncache, generaldelta, share-safe, sparserevlog (no-rust !)
      added: dotencode, fncache, generaldelta, persistent-nodemap, share-safe, sparserevlog (rust !)
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
 
   $ hg --config format.dotencode=false debugupgraderepo
   note:    selecting all-filelogs for processing to change: fncache
   note:    selecting all-manifestlogs for processing to change: fncache
   note:    selecting changelog for processing to change: fncache
   
   repository lacks features recommended by current config options:
   
   fncache
      long and reserved filenames may not work correctly; repository performance is sub-optimal
   
   generaldelta
      deltas within internal storage are unable to choose optimal revisions; repository is larger and slower than it could be; interaction with other repositories may require extra network and CPU resources, making "hg push" and "hg pull" slower
   
   share-safe
      old shared repositories do not share source repository requirements and config. This leads to various problems when the source repository format is upgraded or some new extensions are enabled.
   
   sparserevlog
      in order to limit disk reading and memory usage on older version, the span of a delta chain from its root to its end is limited, whatever the relevant data in this span. This can severly limit Mercurial ability to build good chain of delta resulting is much more storage space being taken and limit reusability of on disk delta during exchange.
   
   persistent-nodemap (rust !)
      persist the node -> rev mapping on disk to speedup lookup (rust !)
    (rust !)
   repository lacks features used by the default config options:
   
   dotencode
      storage of filenames beginning with a period or space may not work correctly
   
   
   performing an upgrade with "--run" will make the following changes:
   
   requirements
      preserved: revlogv1, store
      added: fncache, generaldelta, share-safe, sparserevlog (no-rust !)
      added: fncache, generaldelta, persistent-nodemap, share-safe, sparserevlog (rust !)
   
   fncache
      repository will be more resilient to storing certain paths and performance of certain operations should be improved
   
   generaldelta
      repository storage will be able to create optimal deltas; new repository data will be smaller and read times should decrease; interacting with other repositories using this storage model should require less network and CPU resources, making "hg push" and "hg pull" faster
   
   share-safe
      Upgrades a repository to share-safe format so that future shares of this repository share its requirements and configs.
   
   sparserevlog
      Revlog supports delta chain with more unused data between payload. These gaps will be skipped at read time. This allows for better delta chains, making a better compression and faster exchange with server.
   
   persistent-nodemap (rust !)
      Speedup revision lookup by node id. (rust !)
    (rust !)
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   additional optimizations are available by specifying "--optimize <name>":
   
   re-delta-parent
      deltas within internal storage will be recalculated to choose an optimal base revision where this was not already done; the size of the repository may shrink and various operations may become faster; the first time this optimization is performed could slow down upgrade execution considerably; subsequent invocations should not run noticeably slower
   
   re-delta-multibase
      deltas within internal storage will be recalculated against multiple base revision and the smallest difference will be used; the size of the repository may shrink significantly when there are many merges; this optimization will slow down execution in proportion to the number of merges in the repository and the amount of files in the repository; this slow down should not be significant unless there are tens of thousands of files and thousands of merges
   
   re-delta-all
      deltas within internal storage will always be recalculated without reusing prior deltas; this will likely make execution run several times slower; this optimization is typically not needed
   
   re-delta-fulladd
      every revision will be re-added as if it was new content. It will go through the full storage mechanism giving extensions a chance to process it (eg. lfs). This is similar to "re-delta-all" but even slower since more logic is involved.
   
 
   $ cd ..
 
 Upgrading a repository that is already modern essentially no-ops
 
   $ hg init modern
   $ hg -R modern debugupgraderepo --run
   nothing to do
 
 Upgrading a repository to generaldelta works
 
   $ hg --config format.usegeneraldelta=false init upgradegd
   $ cd upgradegd
   $ touch f0
   $ hg -q commit -A -m initial
   $ mkdir FooBarDirectory.d
   $ touch FooBarDirectory.d/f1
   $ hg -q commit -A -m 'add f1'
   $ hg -q up -r 0
   >>> import random
   >>> random.seed(0) # have a reproducible content
   >>> with open("f2", "wb") as f:
   ...     for i in range(100000):
   ...         f.write(b"%d\n" % random.randint(1000000000, 9999999999)) and None
   $ hg -q commit -A -m 'add f2'
 
 make sure we have a .d file
 
   $ ls -d .hg/store/data/*
   .hg/store/data/_foo_bar_directory.d.hg
   .hg/store/data/f0.i
   .hg/store/data/f2.d
   .hg/store/data/f2.i
 
   $ hg debugupgraderepo --run --config format.sparse-revlog=false
   note:    selecting all-filelogs for processing to change: generaldelta
   note:    selecting all-manifestlogs for processing to change: generaldelta
   note:    selecting changelog for processing to change: generaldelta
   
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, revlogv1, share-safe, store (no-rust !)
      preserved: dotencode, fncache, persistent-nodemap, revlogv1, share-safe, store (rust !)
      added: generaldelta
   
   generaldelta
      repository storage will be able to create optimal deltas; new repository data will be smaller and read times should decrease; interacting with other repositories using this storage model should require less network and CPU resources, making "hg push" and "hg pull" faster
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog)
   migrating 519 KB in store; 1.05 MB tracked data
   migrating 3 filelogs containing 3 revisions (518 KB in store; 1.05 MB tracked data)
   finished migrating 3 filelog revisions across 3 filelogs; change in size: 0 bytes
   migrating 1 manifests containing 3 revisions (384 bytes in store; 238 bytes tracked data)
   finished migrating 3 manifest revisions across 1 manifests; change in size: -17 bytes
   migrating changelog containing 3 revisions (394 bytes in store; 199 bytes tracked data)
   finished migrating 3 changelog revisions; change in size: 0 bytes
   finished migrating 9 total revisions; total change in store size: -17 bytes
   copying phaseroots
   copying requires
   data fully upgraded in a temporary repository
   marking source repository as being upgraded; clients will be unable to read from repository
   starting in-place swap of repository data
   replaced files will be backed up at $TESTTMP/upgradegd/.hg/upgradebackup.* (glob)
   replacing store...
   store replacement complete; repository was inconsistent for *s (glob)
   finalizing requirements file and making repository readable again
   removing temporary repository $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   copy of old repository backed up at $TESTTMP/upgradegd/.hg/upgradebackup.* (glob)
   the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified
 
 Original requirements backed up
 
   $ cat .hg/upgradebackup.*/requires
   share-safe
   $ cat .hg/upgradebackup.*/store/requires
   dotencode
   fncache
   persistent-nodemap (rust !)
   revlogv1
   store
   upgradeinprogress
 
 generaldelta added to original requirements files
 
   $ hg debugrequires
   dotencode
   fncache
   generaldelta
   persistent-nodemap (rust !)
   revlogv1
   share-safe
   store
 
 store directory has files we expect
 
   $ ls .hg/store
   00changelog.i
   00manifest.i
   data
   data-s
   fncache
   phaseroots
   requires
   undo
   undo.backupfiles
 
 manifest should be generaldelta
 
   $ hg debugrevlog -m | grep flags
   flags  : inline, generaldelta
 
 verify should be happy
 
   $ hg verify -q
 
 old store should be backed up
 
   $ ls -d .hg/upgradebackup.*/
   .hg/upgradebackup.*/ (glob)
   $ ls .hg/upgradebackup.*/store
   00changelog.i
   00manifest.i
   data
   data-s
   fncache
   phaseroots
   requires
   undo
   undo.backup.fncache.bck
   undo.backupfiles
 
 unless --no-backup is passed
 
   $ rm -rf .hg/upgradebackup.*/
   $ hg debugupgraderepo --run --no-backup
   note:    selecting all-filelogs for processing to change: sparserevlog
   note:    selecting all-manifestlogs for processing to change: sparserevlog
   note:    selecting changelog for processing to change: sparserevlog
   
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, store (rust !)
      added: sparserevlog
   
   sparserevlog
      Revlog supports delta chain with more unused data between payload. These gaps will be skipped at read time. This allows for better delta chains, making a better compression and faster exchange with server.
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog)
   migrating 519 KB in store; 1.05 MB tracked data
   migrating 3 filelogs containing 3 revisions (518 KB in store; 1.05 MB tracked data)
   finished migrating 3 filelog revisions across 3 filelogs; change in size: 0 bytes
   migrating 1 manifests containing 3 revisions (367 bytes in store; 238 bytes tracked data)
   finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes
   migrating changelog containing 3 revisions (394 bytes in store; 199 bytes tracked data)
   finished migrating 3 changelog revisions; change in size: 0 bytes
   finished migrating 9 total revisions; total change in store size: 0 bytes
   copying phaseroots
   copying requires
   data fully upgraded in a temporary repository
   marking source repository as being upgraded; clients will be unable to read from repository
   starting in-place swap of repository data
   replacing store...
   store replacement complete; repository was inconsistent for * (glob)
   finalizing requirements file and making repository readable again
   removing temporary repository $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   $ ls -1 .hg/ | grep upgradebackup
   [1]
 
 We can restrict optimization to some revlog:
 
   $ hg debugupgrade --optimize re-delta-parent --run --manifest --no-backup --debug --traceback
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   optimisations: re-delta-parent
   
   re-delta-parent
      deltas within internal storage will choose a new base revision if needed
   
   processed revlogs:
     - manifest
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog)
   migrating 519 KB in store; 1.05 MB tracked data
   migrating 3 filelogs containing 3 revisions (518 KB in store; 1.05 MB tracked data)
   blindly copying data/FooBarDirectory.d/f1.i containing 1 revisions
   blindly copying data/f0.i containing 1 revisions
   blindly copying data/f2.i containing 1 revisions
   finished migrating 3 filelog revisions across 3 filelogs; change in size: 0 bytes
   migrating 1 manifests containing 3 revisions (367 bytes in store; 238 bytes tracked data)
   cloning 3 revisions from 00manifest.i
   finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes
   migrating changelog containing 3 revisions (394 bytes in store; 199 bytes tracked data)
   blindly copying 00changelog.i containing 3 revisions
   finished migrating 3 changelog revisions; change in size: 0 bytes
   finished migrating 9 total revisions; total change in store size: 0 bytes
   copying phaseroots
   copying requires
   data fully upgraded in a temporary repository
   marking source repository as being upgraded; clients will be unable to read from repository
   starting in-place swap of repository data
   replacing store...
   store replacement complete; repository was inconsistent for *s (glob)
   finalizing requirements file and making repository readable again
   removing temporary repository $TESTTMP/upgradegd/.hg/upgrade.* (glob)
 
 Check that the repo still works fine
 
   $ hg log -G --stat
   @  changeset:   2:fca376863211
   |  tag:         tip
   |  parent:      0:ba592bf28da2
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     add f2
   |
   |   f2 |  100000 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   |   1 files changed, 100000 insertions(+), 0 deletions(-)
   |
   | o  changeset:   1:2029ce2354e2
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     add f1
   |
   |
   o  changeset:   0:ba592bf28da2
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     initial
   
   
 
   $ hg verify -q
 
 Check we can select negatively
 
   $ hg debugupgrade --optimize re-delta-parent --run --no-manifest --no-backup --debug --traceback
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   optimisations: re-delta-parent
   
   re-delta-parent
      deltas within internal storage will choose a new base revision if needed
   
   processed revlogs:
     - all-filelogs
     - changelog
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog)
   migrating 519 KB in store; 1.05 MB tracked data
   migrating 3 filelogs containing 3 revisions (518 KB in store; 1.05 MB tracked data)
   cloning 1 revisions from data/FooBarDirectory.d/f1.i
   cloning 1 revisions from data/f0.i
   cloning 1 revisions from data/f2.i
   finished migrating 3 filelog revisions across 3 filelogs; change in size: 0 bytes
   migrating 1 manifests containing 3 revisions (367 bytes in store; 238 bytes tracked data)
   blindly copying 00manifest.i containing 3 revisions
   finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes
   migrating changelog containing 3 revisions (394 bytes in store; 199 bytes tracked data)
   cloning 3 revisions from 00changelog.i
   finished migrating 3 changelog revisions; change in size: 0 bytes
   finished migrating 9 total revisions; total change in store size: 0 bytes
   copying phaseroots
   copying requires
   data fully upgraded in a temporary repository
   marking source repository as being upgraded; clients will be unable to read from repository
   starting in-place swap of repository data
   replacing store...
   store replacement complete; repository was inconsistent for *s (glob)
   finalizing requirements file and making repository readable again
   removing temporary repository $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   $ hg verify -q
 
 Check that we can select changelog only
 
   $ hg debugupgrade --optimize re-delta-parent --run --changelog --no-backup --debug --traceback
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   optimisations: re-delta-parent
   
   re-delta-parent
      deltas within internal storage will choose a new base revision if needed
   
   processed revlogs:
     - changelog
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog)
   migrating 519 KB in store; 1.05 MB tracked data
   migrating 3 filelogs containing 3 revisions (518 KB in store; 1.05 MB tracked data)
   blindly copying data/FooBarDirectory.d/f1.i containing 1 revisions
   blindly copying data/f0.i containing 1 revisions
   blindly copying data/f2.i containing 1 revisions
   finished migrating 3 filelog revisions across 3 filelogs; change in size: 0 bytes
   migrating 1 manifests containing 3 revisions (367 bytes in store; 238 bytes tracked data)
   blindly copying 00manifest.i containing 3 revisions
   finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes
   migrating changelog containing 3 revisions (394 bytes in store; 199 bytes tracked data)
   cloning 3 revisions from 00changelog.i
   finished migrating 3 changelog revisions; change in size: 0 bytes
   finished migrating 9 total revisions; total change in store size: 0 bytes
   copying phaseroots
   copying requires
   data fully upgraded in a temporary repository
   marking source repository as being upgraded; clients will be unable to read from repository
   starting in-place swap of repository data
   replacing store...
   store replacement complete; repository was inconsistent for *s (glob)
   finalizing requirements file and making repository readable again
   removing temporary repository $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   $ hg verify -q
 
 Check that we can select filelog only
 
   $ hg debugupgrade --optimize re-delta-parent --run --no-changelog --no-manifest --no-backup --debug --traceback
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   optimisations: re-delta-parent
   
   re-delta-parent
      deltas within internal storage will choose a new base revision if needed
   
   processed revlogs:
     - all-filelogs
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog)
   migrating 519 KB in store; 1.05 MB tracked data
   migrating 3 filelogs containing 3 revisions (518 KB in store; 1.05 MB tracked data)
   cloning 1 revisions from data/FooBarDirectory.d/f1.i
   cloning 1 revisions from data/f0.i
   cloning 1 revisions from data/f2.i
   finished migrating 3 filelog revisions across 3 filelogs; change in size: 0 bytes
   migrating 1 manifests containing 3 revisions (367 bytes in store; 238 bytes tracked data)
   blindly copying 00manifest.i containing 3 revisions
   finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes
   migrating changelog containing 3 revisions (394 bytes in store; 199 bytes tracked data)
   blindly copying 00changelog.i containing 3 revisions
   finished migrating 3 changelog revisions; change in size: 0 bytes
   finished migrating 9 total revisions; total change in store size: 0 bytes
   copying phaseroots
   copying requires
   data fully upgraded in a temporary repository
   marking source repository as being upgraded; clients will be unable to read from repository
   starting in-place swap of repository data
   replacing store...
   store replacement complete; repository was inconsistent for *s (glob)
   finalizing requirements file and making repository readable again
   removing temporary repository $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   $ hg verify -q
 
 
 Check you can't skip revlog clone during important format downgrade
 
   $ echo "[format]" > .hg/hgrc
   $ echo "sparse-revlog=no" >> .hg/hgrc
   $ hg debugupgrade --optimize re-delta-parent --no-manifest --no-backup --quiet
   warning: ignoring  --no-manifest, as upgrade is changing: sparserevlog
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, store (rust !)
      removed: sparserevlog
   
   optimisations: re-delta-parent
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   $ hg debugupgrade --optimize re-delta-parent --run --manifest --no-backup --debug --traceback
   note:    selecting all-filelogs for processing to change: sparserevlog
   note:    selecting changelog for processing to change: sparserevlog
   
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, store (rust !)
      removed: sparserevlog
   
   optimisations: re-delta-parent
   
   re-delta-parent
      deltas within internal storage will choose a new base revision if needed
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog)
   migrating 519 KB in store; 1.05 MB tracked data
   migrating 3 filelogs containing 3 revisions (518 KB in store; 1.05 MB tracked data)
   cloning 1 revisions from data/FooBarDirectory.d/f1.i
   cloning 1 revisions from data/f0.i
   cloning 1 revisions from data/f2.i
   finished migrating 3 filelog revisions across 3 filelogs; change in size: 0 bytes
   migrating 1 manifests containing 3 revisions (367 bytes in store; 238 bytes tracked data)
   cloning 3 revisions from 00manifest.i
   finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes
   migrating changelog containing 3 revisions (394 bytes in store; 199 bytes tracked data)
   cloning 3 revisions from 00changelog.i
   finished migrating 3 changelog revisions; change in size: 0 bytes
   finished migrating 9 total revisions; total change in store size: 0 bytes
   copying phaseroots
   copying requires
   data fully upgraded in a temporary repository
   marking source repository as being upgraded; clients will be unable to read from repository
   starting in-place swap of repository data
   replacing store...
   store replacement complete; repository was inconsistent for *s (glob)
   finalizing requirements file and making repository readable again
   removing temporary repository $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   $ hg verify -q
 
 Check you can't skip revlog clone during important format upgrade
 
   $ echo "sparse-revlog=yes" >> .hg/hgrc
   $ hg debugupgrade --optimize re-delta-parent --run --manifest --no-backup --debug --traceback
   note:    selecting all-filelogs for processing to change: sparserevlog
   note:    selecting changelog for processing to change: sparserevlog
   
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, store (rust !)
      added: sparserevlog
   
   optimisations: re-delta-parent
   
   sparserevlog
      Revlog supports delta chain with more unused data between payload. These gaps will be skipped at read time. This allows for better delta chains, making a better compression and faster exchange with server.
   
   re-delta-parent
      deltas within internal storage will choose a new base revision if needed
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog)
   migrating 519 KB in store; 1.05 MB tracked data
   migrating 3 filelogs containing 3 revisions (518 KB in store; 1.05 MB tracked data)
   cloning 1 revisions from data/FooBarDirectory.d/f1.i
   cloning 1 revisions from data/f0.i
   cloning 1 revisions from data/f2.i
   finished migrating 3 filelog revisions across 3 filelogs; change in size: 0 bytes
   migrating 1 manifests containing 3 revisions (367 bytes in store; 238 bytes tracked data)
   cloning 3 revisions from 00manifest.i
   finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes
   migrating changelog containing 3 revisions (394 bytes in store; 199 bytes tracked data)
   cloning 3 revisions from 00changelog.i
   finished migrating 3 changelog revisions; change in size: 0 bytes
   finished migrating 9 total revisions; total change in store size: 0 bytes
   copying phaseroots
   copying requires
   data fully upgraded in a temporary repository
   marking source repository as being upgraded; clients will be unable to read from repository
   starting in-place swap of repository data
   replacing store...
   store replacement complete; repository was inconsistent for *s (glob)
   finalizing requirements file and making repository readable again
   removing temporary repository $TESTTMP/upgradegd/.hg/upgrade.* (glob)
   $ hg verify -q
 
   $ cd ..
 
 store files with special filenames aren't encoded during copy
 
   $ hg init store-filenames
   $ cd store-filenames
   $ touch foo
   $ hg -q commit -A -m initial
   $ touch .hg/store/.XX_special_filename
 
   $ hg debugupgraderepo --run
   nothing to do
   $ hg debugupgraderepo --run --optimize 're-delta-fulladd'
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   optimisations: re-delta-fulladd
   
   re-delta-fulladd
      each revision will be added as new content to the internal storage; this will likely drastically slow down execution time, but some extensions might need it
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/store-filenames/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   migrating 3 total revisions (1 in filelogs, 1 in manifests, 1 in changelog)
   migrating 301 bytes in store; 107 bytes tracked data
   migrating 1 filelogs containing 1 revisions (64 bytes in store; 0 bytes tracked data)
   finished migrating 1 filelog revisions across 1 filelogs; change in size: 0 bytes
   migrating 1 manifests containing 1 revisions (110 bytes in store; 45 bytes tracked data)
   finished migrating 1 manifest revisions across 1 manifests; change in size: 0 bytes
   migrating changelog containing 1 revisions (127 bytes in store; 62 bytes tracked data)
   finished migrating 1 changelog revisions; change in size: 0 bytes
   finished migrating 3 total revisions; total change in store size: 0 bytes
   copying .XX_special_filename
   copying phaseroots
   copying requires
   data fully upgraded in a temporary repository
   marking source repository as being upgraded; clients will be unable to read from repository
   starting in-place swap of repository data
   replaced files will be backed up at $TESTTMP/store-filenames/.hg/upgradebackup.* (glob)
   replacing store...
   store replacement complete; repository was inconsistent for *s (glob)
   finalizing requirements file and making repository readable again
   removing temporary repository $TESTTMP/store-filenames/.hg/upgrade.* (glob)
   copy of old repository backed up at $TESTTMP/store-filenames/.hg/upgradebackup.* (glob)
   the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified
 
 fncache is valid after upgrade
 
   $ hg debugrebuildfncache
   fncache already up to date
 
   $ cd ..
 
 Check upgrading a large file repository
 ---------------------------------------
 
   $ hg init largefilesrepo
   $ cat << EOF >> largefilesrepo/.hg/hgrc
   > [extensions]
   > largefiles =
   > EOF
 
   $ cd largefilesrepo
   $ touch foo
   $ hg add --large foo
   $ hg -q commit -m initial
   $ hg debugrequires
   dotencode
   fncache
   generaldelta
   largefiles
   persistent-nodemap (rust !)
   revlogv1
   share-safe
   sparserevlog
   store
 
   $ hg debugupgraderepo --run
   nothing to do
   $ hg debugrequires
   dotencode
   fncache
   generaldelta
   largefiles
   persistent-nodemap (rust !)
   revlogv1
   share-safe
   sparserevlog
   store
 
   $ cat << EOF >> .hg/hgrc
   > [extensions]
   > lfs =
   > [lfs]
   > threshold = 10
   > EOF
   $ echo '123456789012345' > lfs.bin
   $ hg ci -Am 'lfs.bin'
   adding lfs.bin
   $ hg debugrequires | grep lfs
   lfs
   $ find .hg/store/lfs -type f
   .hg/store/lfs/objects/d0/beab232adff5ba365880366ad30b1edb85c4c5372442b5d2fe27adc96d653f
 
   $ hg debugupgraderepo --run
   nothing to do
 
   $ hg debugrequires | grep lfs
   lfs
   $ find .hg/store/lfs -type f
   .hg/store/lfs/objects/d0/beab232adff5ba365880366ad30b1edb85c4c5372442b5d2fe27adc96d653f
   $ hg verify -q
   $ hg debugdata lfs.bin 0
   version https://git-lfs.github.com/spec/v1
   oid sha256:d0beab232adff5ba365880366ad30b1edb85c4c5372442b5d2fe27adc96d653f
   size 16
   x-is-binary 0
 
   $ cd ..
 
 repository config is taken in account
 -------------------------------------
 
   $ cat << EOF >> $HGRCPATH
   > [format]
   > maxchainlen = 1
   > EOF
 
   $ hg init localconfig
   $ cd localconfig
   $ cat << EOF > file
   > some content
   > with some length
   > to make sure we get a delta
   > after changes
   > very long
   > very long
   > very long
   > very long
   > very long
   > very long
   > very long
   > very long
   > very long
   > very long
   > very long
   > EOF
   $ hg -q commit -A -m A
   $ echo "new line" >> file
   $ hg -q commit -m B
   $ echo "new line" >> file
   $ hg -q commit -m C
 
   $ cat << EOF >> .hg/hgrc
   > [format]
   > maxchainlen = 9001
   > EOF
   $ hg config format
   format.revlog-compression=$BUNDLE2_COMPRESSIONS$
   format.maxchainlen=9001
-  $ hg debugdeltachain file
+  $ hg debugdeltachain file --all-info
       rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio   readsize largestblk rddensity srchunks
         0      -1      -1       1        1       -1    base         77        182         77   0.42308        77         0    0.00000         77         77   1.00000        1
         1       0      -1       1        2        0      p1         21        191         98   0.51309        98         0    0.00000         98         98   1.00000        1
         2       1      -1       1        2        0    snap         30        200        107   0.53500       128        21    0.19626        128        128   0.83594        1
 
   $ hg debugupgraderepo --run --optimize 're-delta-all'
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
   
   optimisations: re-delta-all
   
   re-delta-all
      deltas within internal storage will be fully recomputed; this will likely drastically slow down execution time
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/localconfig/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog)
   migrating 1019 bytes in store; 882 bytes tracked data
   migrating 1 filelogs containing 3 revisions (320 bytes in store; 573 bytes tracked data)
   finished migrating 3 filelog revisions across 1 filelogs; change in size: -9 bytes
   migrating 1 manifests containing 3 revisions (333 bytes in store; 138 bytes tracked data)
   finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes
   migrating changelog containing 3 revisions (366 bytes in store; 171 bytes tracked data)
   finished migrating 3 changelog revisions; change in size: 0 bytes
   finished migrating 9 total revisions; total change in store size: -9 bytes
   copying phaseroots
   copying requires
   data fully upgraded in a temporary repository
   marking source repository as being upgraded; clients will be unable to read from repository
   starting in-place swap of repository data
   replaced files will be backed up at $TESTTMP/localconfig/.hg/upgradebackup.* (glob)
   replacing store...
   store replacement complete; repository was inconsistent for *s (glob)
   finalizing requirements file and making repository readable again
   removing temporary repository $TESTTMP/localconfig/.hg/upgrade.* (glob)
   copy of old repository backed up at $TESTTMP/localconfig/.hg/upgradebackup.* (glob)
   the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified
-  $ hg debugdeltachain file
+  $ hg debugdeltachain file --all-info
       rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio   readsize largestblk rddensity srchunks
         0      -1      -1       1        1       -1    base         77        182         77   0.42308        77         0    0.00000         77         77   1.00000        1
         1       0      -1       1        2        0      p1         21        191         98   0.51309        98         0    0.00000         98         98   1.00000        1
         2       1      -1       1        3        1      p1         21        200        119   0.59500       119         0    0.00000        119        119   1.00000        1
   $ cd ..
 
   $ cat << EOF >> $HGRCPATH
   > [format]
   > maxchainlen = 9001
   > EOF
 
 Check upgrading a sparse-revlog repository
 ---------------------------------------
 
   $ hg init sparserevlogrepo --config format.sparse-revlog=no
   $ cd sparserevlogrepo
   $ touch foo
   $ hg add foo
   $ hg -q commit -m "foo"
   $ hg debugrequires
   dotencode
   fncache
   generaldelta
   persistent-nodemap (rust !)
   revlogv1
   share-safe
   store
 
 Check that we can add the sparse-revlog format requirement
   $ hg --config format.sparse-revlog=yes debugupgraderepo --run --quiet
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, store (rust !)
      added: sparserevlog
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   $ hg debugrequires
   dotencode
   fncache
   generaldelta
   persistent-nodemap (rust !)
   revlogv1
   share-safe
   sparserevlog
   store
 
 Check that we can remove the sparse-revlog format requirement
   $ hg --config format.sparse-revlog=no debugupgraderepo --run --quiet
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, store (rust !)
      removed: sparserevlog
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   $ hg debugrequires
   dotencode
   fncache
   generaldelta
   persistent-nodemap (rust !)
   revlogv1
   share-safe
   store
 
 #if zstd
 
 Check upgrading to a zstd revlog
 --------------------------------
 
 upgrade
 
   $ hg --config format.revlog-compression=zstd debugupgraderepo --run  --no-backup --quiet
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, store (rust !)
      added: revlog-compression-zstd, sparserevlog
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   $ hg debugformat -v
   format-variant     repo config default
   fncache:            yes    yes     yes
   dirstate-v2:         no     no      no
   tracked-hint:        no     no      no
   dotencode:          yes    yes     yes
   generaldelta:       yes    yes     yes
   share-safe:         yes    yes     yes
   sparserevlog:       yes    yes     yes
   persistent-nodemap:  no     no      no (no-rust !)
   persistent-nodemap: yes    yes      no (rust !)
   copies-sdc:          no     no      no
   revlog-v2:           no     no      no
   changelog-v2:        no     no      no
   plain-cl-delta:     yes    yes     yes
   compression:        zlib   zlib    zlib (no-zstd !)
   compression:        zstd   zlib    zstd (zstd !)
   compression-level:  default default default
   $ hg debugrequires
   dotencode
   fncache
   generaldelta
   persistent-nodemap (rust !)
   revlog-compression-zstd
   revlogv1
   share-safe
   sparserevlog
   store
 
 downgrade
 
   $ hg debugupgraderepo --run --no-backup --quiet
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
      removed: revlog-compression-zstd
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   $ hg debugformat -v
   format-variant     repo config default
   fncache:            yes    yes     yes
   dirstate-v2:         no     no      no
   tracked-hint:        no     no      no
   dotencode:          yes    yes     yes
   generaldelta:       yes    yes     yes
   share-safe:         yes    yes     yes
   sparserevlog:       yes    yes     yes
   persistent-nodemap:  no     no      no (no-rust !)
   persistent-nodemap: yes    yes      no (rust !)
   copies-sdc:          no     no      no
   revlog-v2:           no     no      no
   changelog-v2:        no     no      no
   plain-cl-delta:     yes    yes     yes
   compression:        zlib   zlib    zlib (no-zstd !)
   compression:        zlib   zlib    zstd (zstd !)
   compression-level:  default default default
   $ hg debugrequires
   dotencode
   fncache
   generaldelta
   persistent-nodemap (rust !)
   revlogv1
   share-safe
   sparserevlog
   store
 
 upgrade from hgrc
 
   $ cat >> .hg/hgrc << EOF
   > [format]
   > revlog-compression=zstd
   > EOF
   $ hg debugupgraderepo --run --no-backup --quiet
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (rust !)
      added: revlog-compression-zstd
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   $ hg debugformat -v
   format-variant     repo config default
   fncache:            yes    yes     yes
   dirstate-v2:         no     no      no
   tracked-hint:        no     no      no
   dotencode:          yes    yes     yes
   generaldelta:       yes    yes     yes
   share-safe:         yes    yes     yes
   sparserevlog:       yes    yes     yes
   persistent-nodemap:  no     no      no (no-rust !)
   persistent-nodemap: yes    yes      no (rust !)
   copies-sdc:          no     no      no
   revlog-v2:           no     no      no
   changelog-v2:        no     no      no
   plain-cl-delta:     yes    yes     yes
   compression:        zlib   zlib    zlib (no-zstd !)
   compression:        zstd   zstd    zstd (zstd !)
   compression-level:  default default default
   $ hg debugrequires
   dotencode
   fncache
   generaldelta
   persistent-nodemap (rust !)
   revlog-compression-zstd
   revlogv1
   share-safe
   sparserevlog
   store
 
 #endif
 
 Check upgrading to a revlog format supporting sidedata
 ------------------------------------------------------
 
 upgrade
 
   $ hg debugsidedata -c 0
   $ hg --config experimental.revlogv2=enable-unstable-format-and-corrupt-my-data debugupgraderepo --run  --no-backup --config "extensions.sidedata=$TESTDIR/testlib/ext-sidedata.py" --quiet
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, share-safe, store (no-zstd !)
      preserved: dotencode, fncache, generaldelta, revlog-compression-zstd, share-safe, sparserevlog, store (zstd no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlog-compression-zstd, share-safe, sparserevlog, store (rust !)
      removed: revlogv1
      added: exp-revlogv2.2 (zstd !)
      added: exp-revlogv2.2, sparserevlog (no-zstd !)
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   $ hg debugformat -v
   format-variant     repo config default
   fncache:            yes    yes     yes
   dirstate-v2:         no     no      no
   tracked-hint:        no     no      no
   dotencode:          yes    yes     yes
   generaldelta:       yes    yes     yes
   share-safe:         yes    yes     yes
   sparserevlog:       yes    yes     yes
   persistent-nodemap:  no     no      no (no-rust !)
   persistent-nodemap: yes    yes      no (rust !)
   copies-sdc:          no     no      no
   revlog-v2:          yes     no      no
   changelog-v2:        no     no      no
   plain-cl-delta:     yes    yes     yes
   compression:        zlib   zlib    zlib (no-zstd !)
   compression:        zstd   zstd    zstd (zstd !)
   compression-level:  default default default
   $ hg debugrequires
   dotencode
   exp-revlogv2.2
   fncache
   generaldelta
   persistent-nodemap (rust !)
   revlog-compression-zstd (zstd !)
   share-safe
   sparserevlog
   store
   $ hg debugsidedata -c 0
   2 sidedata entries
    entry-0001 size 4
    entry-0002 size 32
 
 downgrade
 
   $ hg debugupgraderepo --config experimental.revlogv2=no --run --no-backup --quiet
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, share-safe, sparserevlog, store (no-zstd !)
      preserved: dotencode, fncache, generaldelta, revlog-compression-zstd, share-safe, sparserevlog, store (zstd no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlog-compression-zstd, share-safe, sparserevlog, store (rust !)
      removed: exp-revlogv2.2
      added: revlogv1
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   $ hg debugformat -v
   format-variant     repo config default
   fncache:            yes    yes     yes
   dirstate-v2:         no     no      no
   tracked-hint:        no     no      no
   dotencode:          yes    yes     yes
   generaldelta:       yes    yes     yes
   share-safe:         yes    yes     yes
   sparserevlog:       yes    yes     yes
   persistent-nodemap:  no     no      no (no-rust !)
   persistent-nodemap: yes    yes      no (rust !)
   copies-sdc:          no     no      no
   revlog-v2:           no     no      no
   changelog-v2:        no     no      no
   plain-cl-delta:     yes    yes     yes
   compression:        zlib   zlib    zlib (no-zstd !)
   compression:        zstd   zstd    zstd (zstd !)
   compression-level:  default default default
   $ hg debugrequires
   dotencode
   fncache
   generaldelta
   persistent-nodemap (rust !)
   revlog-compression-zstd (zstd !)
   revlogv1
   share-safe
   sparserevlog
   store
   $ hg debugsidedata -c 0
 
 upgrade from hgrc
 
   $ cat >> .hg/hgrc << EOF
   > [experimental]
   > revlogv2=enable-unstable-format-and-corrupt-my-data
   > EOF
   $ hg debugupgraderepo --run --no-backup --quiet
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, fncache, generaldelta, share-safe, sparserevlog, store (no-zstd !)
      preserved: dotencode, fncache, generaldelta, revlog-compression-zstd, share-safe, sparserevlog, store (zstd no-rust !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlog-compression-zstd, share-safe, sparserevlog, store (rust !)
      removed: revlogv1
      added: exp-revlogv2.2
   
   processed revlogs:
     - all-filelogs
     - changelog
     - manifest
   
   $ hg debugformat -v
   format-variant     repo config default
   fncache:            yes    yes     yes
   dirstate-v2:         no     no      no
   tracked-hint:        no     no      no
   dotencode:          yes    yes     yes
   generaldelta:       yes    yes     yes
   share-safe:         yes    yes     yes
   sparserevlog:       yes    yes     yes
   persistent-nodemap:  no     no      no (no-rust !)
   persistent-nodemap: yes    yes      no (rust !)
   copies-sdc:          no     no      no
   revlog-v2:          yes    yes      no
   changelog-v2:        no     no      no
   plain-cl-delta:     yes    yes     yes
   compression:        zlib   zlib    zlib (no-zstd !)
   compression:        zstd   zstd    zstd (zstd !)
   compression-level:  default default default
   $ hg debugrequires
   dotencode
   exp-revlogv2.2
   fncache
   generaldelta
   persistent-nodemap (rust !)
   revlog-compression-zstd (zstd !)
   share-safe
   sparserevlog
   store
   $ hg debugsidedata -c 0
 
 Demonstrate that nothing to perform upgrade will still run all the way through
 
   $ hg debugupgraderepo --run
   nothing to do
 
 #if no-rust
 
   $ cat << EOF >> $HGRCPATH
   > [storage]
   > dirstate-v2.slow-path = allow
   > EOF
 
 #endif
 
 Upgrade to dirstate-v2
 
   $ hg debugformat -v --config format.use-dirstate-v2=1 | grep dirstate-v2
   dirstate-v2:         no    yes      no
   $ hg debugupgraderepo --config format.use-dirstate-v2=1 --run
   upgrade will perform the following actions:
   
   requirements
      preserved: * (glob)
      added: dirstate-v2
   
   dirstate-v2
      "hg status" will be faster
   
   no revlogs to process
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/sparserevlogrepo/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   upgrading to dirstate-v2 from v1
   replaced files will be backed up at $TESTTMP/sparserevlogrepo/.hg/upgradebackup.* (glob)
   removing temporary repository $TESTTMP/sparserevlogrepo/.hg/upgrade.* (glob)
   $ ls .hg/upgradebackup.*/dirstate
   .hg/upgradebackup.*/dirstate (glob)
   $ hg debugformat -v | grep dirstate-v2
   dirstate-v2:        yes     no      no
   $ hg status
   $ dd bs=12 count=1 if=.hg/dirstate 2> /dev/null
   dirstate-v2
 
 Downgrade from dirstate-v2
 
   $ hg debugupgraderepo --run
   upgrade will perform the following actions:
   
   requirements
      preserved: * (glob)
      removed: dirstate-v2
   
   no revlogs to process
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/sparserevlogrepo/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   downgrading from dirstate-v2 to v1
   replaced files will be backed up at $TESTTMP/sparserevlogrepo/.hg/upgradebackup.* (glob)
   removing temporary repository $TESTTMP/sparserevlogrepo/.hg/upgrade.* (glob)
   $ hg debugformat -v | grep dirstate-v2
   dirstate-v2:         no     no      no
   $ hg status
 
   $ cd ..
 
 dirstate-v2: upgrade and downgrade from and empty repository:
 -------------------------------------------------------------
 
   $ hg init --config format.use-dirstate-v2=no dirstate-v2-empty
   $ cd dirstate-v2-empty
   $ hg debugformat | grep dirstate-v2
   dirstate-v2:         no
 
 upgrade
 
   $ hg debugupgraderepo --run --config format.use-dirstate-v2=yes
   upgrade will perform the following actions:
   
   requirements
      preserved: * (glob)
      added: dirstate-v2
   
   dirstate-v2
      "hg status" will be faster
   
   no revlogs to process
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/dirstate-v2-empty/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   upgrading to dirstate-v2 from v1
   replaced files will be backed up at $TESTTMP/dirstate-v2-empty/.hg/upgradebackup.* (glob)
   removing temporary repository $TESTTMP/dirstate-v2-empty/.hg/upgrade.* (glob)
   $ hg debugformat | grep dirstate-v2
   dirstate-v2:        yes
 
 downgrade
 
   $ hg debugupgraderepo --run --config format.use-dirstate-v2=no
   upgrade will perform the following actions:
   
   requirements
      preserved: * (glob)
      removed: dirstate-v2
   
   no revlogs to process
   
   beginning upgrade...
   repository locked and read-only
   creating temporary repository to stage upgraded data: $TESTTMP/dirstate-v2-empty/.hg/upgrade.* (glob)
   (it is safe to interrupt this process any time before data migration completes)
   downgrading from dirstate-v2 to v1
   replaced files will be backed up at $TESTTMP/dirstate-v2-empty/.hg/upgradebackup.* (glob)
   removing temporary repository $TESTTMP/dirstate-v2-empty/.hg/upgrade.* (glob)
   $ hg debugformat | grep dirstate-v2
   dirstate-v2:         no
 
   $ cd ..
 
 Test automatic upgrade/downgrade
 ================================
 
 
 For dirstate v2
 ---------------
 
 create an initial repository
 
   $ hg init auto-upgrade \
   >     --config format.use-dirstate-v2=no \
   >     --config format.use-dirstate-tracked-hint=yes \
   >     --config format.use-share-safe=no
   $ hg debugbuilddag -R auto-upgrade --new-file .+5
   $ hg -R auto-upgrade update
   6 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg debugformat -R auto-upgrade | grep dirstate-v2
   dirstate-v2:         no
 
 upgrade it to dirstate-v2 automatically
 
   $ hg status -R auto-upgrade \
   >     --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-dirstate-v2=yes
   automatically upgrading repository to the `dirstate-v2` feature
   (see `hg help config.format.use-dirstate-v2` for details)
   $ hg debugformat -R auto-upgrade | grep dirstate-v2
   dirstate-v2:        yes
 
 downgrade it from dirstate-v2 automatically
 
   $ hg status -R auto-upgrade \
   >     --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-dirstate-v2=no
   automatically downgrading repository from the `dirstate-v2` feature
   (see `hg help config.format.use-dirstate-v2` for details)
   $ hg debugformat -R auto-upgrade | grep dirstate-v2
   dirstate-v2:         no
 
 
 For multiple change at the same time
 ------------------------------------
 
   $ hg debugformat -R auto-upgrade | grep -E '(dirstate-v2|tracked|share-safe)'
   dirstate-v2:         no
   tracked-hint:       yes
   share-safe:          no
 
   $ hg status -R auto-upgrade \
   >     --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-dirstate-v2=yes \
   >     --config format.use-dirstate-tracked-hint.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-dirstate-tracked-hint=no\
   >     --config format.use-share-safe.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-share-safe=yes
   automatically upgrading repository to the `dirstate-v2` feature
   (see `hg help config.format.use-dirstate-v2` for details)
   automatically upgrading repository to the `share-safe` feature
   (see `hg help config.format.use-share-safe` for details)
   automatically downgrading repository from the `tracked-hint` feature
   (see `hg help config.format.use-dirstate-tracked-hint` for details)
   $ hg debugformat -R auto-upgrade | grep -E '(dirstate-v2|tracked|share-safe)'
   dirstate-v2:        yes
   tracked-hint:        no
   share-safe:         yes
 
 Quiet upgrade and downgrade
 ---------------------------
 
 
   $ hg debugformat -R auto-upgrade | grep -E '(dirstate-v2|tracked|share-safe)'
   dirstate-v2:        yes
   tracked-hint:        no
   share-safe:         yes
   $ hg status -R auto-upgrade \
   >     --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories:quiet=yes \
   >     --config format.use-dirstate-v2=no \
   >     --config format.use-dirstate-tracked-hint.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-dirstate-tracked-hint.automatic-upgrade-of-mismatching-repositories:quiet=yes \
   >     --config format.use-dirstate-tracked-hint=yes \
   >     --config format.use-share-safe.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-share-safe.automatic-upgrade-of-mismatching-repositories:quiet=yes \
   >     --config format.use-share-safe=no
 
   $ hg debugformat -R auto-upgrade | grep -E '(dirstate-v2|tracked|share-safe)'
   dirstate-v2:         no
   tracked-hint:       yes
   share-safe:          no
 
   $ hg status -R auto-upgrade \
   >     --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories:quiet=yes \
   >     --config format.use-dirstate-v2=yes \
   >     --config format.use-dirstate-tracked-hint.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-dirstate-tracked-hint.automatic-upgrade-of-mismatching-repositories:quiet=yes \
   >     --config format.use-dirstate-tracked-hint=no\
   >     --config format.use-share-safe.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-share-safe.automatic-upgrade-of-mismatching-repositories:quiet=yes \
   >     --config format.use-share-safe=yes
   $ hg debugformat -R auto-upgrade | grep -E '(dirstate-v2|tracked|share-safe)'
   dirstate-v2:        yes
   tracked-hint:        no
   share-safe:         yes
 
 Attempting Auto-upgrade on a read-only repository
 -------------------------------------------------
 
   $ chmod -R a-w auto-upgrade
 
   $ hg status -R auto-upgrade \
   >     --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-dirstate-v2=no
   $ hg debugformat -R auto-upgrade | grep dirstate-v2
   dirstate-v2:        yes
 
   $ chmod -R u+w auto-upgrade
 
 Attempting Auto-upgrade on a locked repository
 ----------------------------------------------
 
   $ hg -R auto-upgrade debuglock --set-lock --quiet &
   $ echo $! >> $DAEMON_PIDS
   $ $RUNTESTDIR/testlib/wait-on-file 10 auto-upgrade/.hg/store/lock
   $ hg status -R auto-upgrade \
   >     --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories=yes \
   >     --config format.use-dirstate-v2=no
   $ hg debugformat -R auto-upgrade | grep dirstate-v2
   dirstate-v2:        yes
 
   $ killdaemons.py