log: make log work even if first parameter doesn't exist

A slowpath optimization kicked in too often because of wrong indentation.

mercurial/cmdutil.py

@@ -1,2009 +1,2009
 # cmdutil.py - help for command processing in mercurial
 #
 # Copyright 2005-2007 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from node import hex, nullid, nullrev, short
 from i18n import _
 import os, sys, errno, re, tempfile
 import util, scmutil, templater, patch, error, templatekw, revlog, copies
 import match as matchmod
 import subrepo, context, repair, graphmod, revset, phases, obsolete
 import changelog
 import lock as lockmod
 
 def parsealiases(cmd):
     return cmd.lstrip("^").split("|")
 
 def findpossible(cmd, table, strict=False):
     """
     Return cmd -> (aliases, command table entry)
     for each matching command.
     Return debug commands (or their aliases) only if no normal command matches.
     """
     choice = {}
     debugchoice = {}
 
     if cmd in table:
         # short-circuit exact matches, "log" alias beats "^log|history"
         keys = [cmd]
     else:
         keys = table.keys()
 
     for e in keys:
         aliases = parsealiases(e)
         found = None
         if cmd in aliases:
             found = cmd
         elif not strict:
             for a in aliases:
                 if a.startswith(cmd):
                     found = a
                     break
         if found is not None:
             if aliases[0].startswith("debug") or found.startswith("debug"):
                 debugchoice[found] = (aliases, table[e])
             else:
                 choice[found] = (aliases, table[e])
 
     if not choice and debugchoice:
         choice = debugchoice
 
     return choice
 
 def findcmd(cmd, table, strict=True):
     """Return (aliases, command table entry) for command string."""
     choice = findpossible(cmd, table, strict)
 
     if cmd in choice:
         return choice[cmd]
 
     if len(choice) > 1:
         clist = choice.keys()
         clist.sort()
         raise error.AmbiguousCommand(cmd, clist)
 
     if choice:
         return choice.values()[0]
 
     raise error.UnknownCommand(cmd)
 
 def findrepo(p):
     while not os.path.isdir(os.path.join(p, ".hg")):
         oldp, p = p, os.path.dirname(p)
         if p == oldp:
             return None
 
     return p
 
 def bailifchanged(repo):
     if repo.dirstate.p2() != nullid:
         raise util.Abort(_('outstanding uncommitted merge'))
     modified, added, removed, deleted = repo.status()[:4]
     if modified or added or removed or deleted:
         raise util.Abort(_("outstanding uncommitted changes"))
     ctx = repo[None]
     for s in ctx.substate:
         if ctx.sub(s).dirty():
             raise util.Abort(_("uncommitted changes in subrepo %s") % s)
 
 def logmessage(ui, opts):
     """ get the log message according to -m and -l option """
     message = opts.get('message')
     logfile = opts.get('logfile')
 
     if message and logfile:
         raise util.Abort(_('options --message and --logfile are mutually '
                            'exclusive'))
     if not message and logfile:
         try:
             if logfile == '-':
                 message = ui.fin.read()
             else:
                 message = '\n'.join(util.readfile(logfile).splitlines())
         except IOError, inst:
             raise util.Abort(_("can't read commit message '%s': %s") %
                              (logfile, inst.strerror))
     return message
 
 def loglimit(opts):
     """get the log limit according to option -l/--limit"""
     limit = opts.get('limit')
     if limit:
         try:
             limit = int(limit)
         except ValueError:
             raise util.Abort(_('limit must be a positive integer'))
         if limit <= 0:
             raise util.Abort(_('limit must be positive'))
     else:
         limit = None
     return limit
 
 def makefilename(repo, pat, node, desc=None,
                   total=None, seqno=None, revwidth=None, pathname=None):
     node_expander = {
         'H': lambda: hex(node),
         'R': lambda: str(repo.changelog.rev(node)),
         'h': lambda: short(node),
         'm': lambda: re.sub('[^\w]', '_', str(desc))
         }
     expander = {
         '%': lambda: '%',
         'b': lambda: os.path.basename(repo.root),
         }
 
     try:
         if node:
             expander.update(node_expander)
         if node:
             expander['r'] = (lambda:
                     str(repo.changelog.rev(node)).zfill(revwidth or 0))
         if total is not None:
             expander['N'] = lambda: str(total)
         if seqno is not None:
             expander['n'] = lambda: str(seqno)
         if total is not None and seqno is not None:
             expander['n'] = lambda: str(seqno).zfill(len(str(total)))
         if pathname is not None:
             expander['s'] = lambda: os.path.basename(pathname)
             expander['d'] = lambda: os.path.dirname(pathname) or '.'
             expander['p'] = lambda: pathname
 
         newname = []
         patlen = len(pat)
         i = 0
         while i < patlen:
             c = pat[i]
             if c == '%':
                 i += 1
                 c = pat[i]
                 c = expander[c]()
             newname.append(c)
             i += 1
         return ''.join(newname)
     except KeyError, inst:
         raise util.Abort(_("invalid format spec '%%%s' in output filename") %
                          inst.args[0])
 
 def makefileobj(repo, pat, node=None, desc=None, total=None,
                 seqno=None, revwidth=None, mode='wb', pathname=None):
 
     writable = mode not in ('r', 'rb')
 
     if not pat or pat == '-':
         fp = writable and repo.ui.fout or repo.ui.fin
         if util.safehasattr(fp, 'fileno'):
             return os.fdopen(os.dup(fp.fileno()), mode)
         else:
             # if this fp can't be duped properly, return
             # a dummy object that can be closed
             class wrappedfileobj(object):
                 noop = lambda x: None
                 def __init__(self, f):
                     self.f = f
                 def __getattr__(self, attr):
                     if attr == 'close':
                         return self.noop
                     else:
                         return getattr(self.f, attr)
 
             return wrappedfileobj(fp)
     if util.safehasattr(pat, 'write') and writable:
         return pat
     if util.safehasattr(pat, 'read') and 'r' in mode:
         return pat
     return open(makefilename(repo, pat, node, desc, total, seqno, revwidth,
                               pathname),
                 mode)
 
 def openrevlog(repo, cmd, file_, opts):
     """opens the changelog, manifest, a filelog or a given revlog"""
     cl = opts['changelog']
     mf = opts['manifest']
     msg = None
     if cl and mf:
         msg = _('cannot specify --changelog and --manifest at the same time')
     elif cl or mf:
         if file_:
             msg = _('cannot specify filename with --changelog or --manifest')
         elif not repo:
             msg = _('cannot specify --changelog or --manifest '
                     'without a repository')
     if msg:
         raise util.Abort(msg)
 
     r = None
     if repo:
         if cl:
             r = repo.changelog
         elif mf:
             r = repo.manifest
         elif file_:
             filelog = repo.file(file_)
             if len(filelog):
                 r = filelog
     if not r:
         if not file_:
             raise error.CommandError(cmd, _('invalid arguments'))
         if not os.path.isfile(file_):
             raise util.Abort(_("revlog '%s' not found") % file_)
         r = revlog.revlog(scmutil.opener(os.getcwd(), audit=False),
                           file_[:-2] + ".i")
     return r
 
 def copy(ui, repo, pats, opts, rename=False):
     # called with the repo lock held
     #
     # hgsep => pathname that uses "/" to separate directories
     # ossep => pathname that uses os.sep to separate directories
     cwd = repo.getcwd()
     targets = {}
     after = opts.get("after")
     dryrun = opts.get("dry_run")
     wctx = repo[None]
 
     def walkpat(pat):
         srcs = []
         badstates = after and '?' or '?r'
         m = scmutil.match(repo[None], [pat], opts, globbed=True)
         for abs in repo.walk(m):
             state = repo.dirstate[abs]
             rel = m.rel(abs)
             exact = m.exact(abs)
             if state in badstates:
                 if exact and state == '?':
                     ui.warn(_('%s: not copying - file is not managed\n') % rel)
                 if exact and state == 'r':
                     ui.warn(_('%s: not copying - file has been marked for'
                               ' remove\n') % rel)
                 continue
             # abs: hgsep
             # rel: ossep
             srcs.append((abs, rel, exact))
         return srcs
 
     # abssrc: hgsep
     # relsrc: ossep
     # otarget: ossep
     def copyfile(abssrc, relsrc, otarget, exact):
         abstarget = scmutil.canonpath(repo.root, cwd, otarget)
         if '/' in abstarget:
             # We cannot normalize abstarget itself, this would prevent
             # case only renames, like a => A.
             abspath, absname = abstarget.rsplit('/', 1)
             abstarget = repo.dirstate.normalize(abspath) + '/' + absname
         reltarget = repo.pathto(abstarget, cwd)
         target = repo.wjoin(abstarget)
         src = repo.wjoin(abssrc)
         state = repo.dirstate[abstarget]
 
         scmutil.checkportable(ui, abstarget)
 
         # check for collisions
         prevsrc = targets.get(abstarget)
         if prevsrc is not None:
             ui.warn(_('%s: not overwriting - %s collides with %s\n') %
                     (reltarget, repo.pathto(abssrc, cwd),
                      repo.pathto(prevsrc, cwd)))
             return
 
         # check for overwrites
         exists = os.path.lexists(target)
         samefile = False
         if exists and abssrc != abstarget:
             if (repo.dirstate.normalize(abssrc) ==
                 repo.dirstate.normalize(abstarget)):
                 if not rename:
                     ui.warn(_("%s: can't copy - same file\n") % reltarget)
                     return
                 exists = False
                 samefile = True
 
         if not after and exists or after and state in 'mn':
             if not opts['force']:
                 ui.warn(_('%s: not overwriting - file exists\n') %
                         reltarget)
                 return
 
         if after:
             if not exists:
                 if rename:
                     ui.warn(_('%s: not recording move - %s does not exist\n') %
                             (relsrc, reltarget))
                 else:
                     ui.warn(_('%s: not recording copy - %s does not exist\n') %
                             (relsrc, reltarget))
                 return
         elif not dryrun:
             try:
                 if exists:
                     os.unlink(target)
                 targetdir = os.path.dirname(target) or '.'
                 if not os.path.isdir(targetdir):
                     os.makedirs(targetdir)
                 if samefile:
                     tmp = target + "~hgrename"
                     os.rename(src, tmp)
                     os.rename(tmp, target)
                 else:
                     util.copyfile(src, target)
                 srcexists = True
             except IOError, inst:
                 if inst.errno == errno.ENOENT:
                     ui.warn(_('%s: deleted in working copy\n') % relsrc)
                     srcexists = False
                 else:
                     ui.warn(_('%s: cannot copy - %s\n') %
                             (relsrc, inst.strerror))
                     return True # report a failure
 
         if ui.verbose or not exact:
             if rename:
                 ui.status(_('moving %s to %s\n') % (relsrc, reltarget))
             else:
                 ui.status(_('copying %s to %s\n') % (relsrc, reltarget))
 
         targets[abstarget] = abssrc
 
         # fix up dirstate
         scmutil.dirstatecopy(ui, repo, wctx, abssrc, abstarget,
                              dryrun=dryrun, cwd=cwd)
         if rename and not dryrun:
             if not after and srcexists and not samefile:
                 util.unlinkpath(repo.wjoin(abssrc))
             wctx.forget([abssrc])
 
     # pat: ossep
     # dest ossep
     # srcs: list of (hgsep, hgsep, ossep, bool)
     # return: function that takes hgsep and returns ossep
     def targetpathfn(pat, dest, srcs):
         if os.path.isdir(pat):
             abspfx = scmutil.canonpath(repo.root, cwd, pat)
             abspfx = util.localpath(abspfx)
             if destdirexists:
                 striplen = len(os.path.split(abspfx)[0])
             else:
                 striplen = len(abspfx)
             if striplen:
                 striplen += len(os.sep)
             res = lambda p: os.path.join(dest, util.localpath(p)[striplen:])
         elif destdirexists:
             res = lambda p: os.path.join(dest,
                                          os.path.basename(util.localpath(p)))
         else:
             res = lambda p: dest
         return res
 
     # pat: ossep
     # dest ossep
     # srcs: list of (hgsep, hgsep, ossep, bool)
     # return: function that takes hgsep and returns ossep
     def targetpathafterfn(pat, dest, srcs):
         if matchmod.patkind(pat):
             # a mercurial pattern
             res = lambda p: os.path.join(dest,
                                          os.path.basename(util.localpath(p)))
         else:
             abspfx = scmutil.canonpath(repo.root, cwd, pat)
             if len(abspfx) < len(srcs[0][0]):
                 # A directory. Either the target path contains the last
                 # component of the source path or it does not.
                 def evalpath(striplen):
                     score = 0
                     for s in srcs:
                         t = os.path.join(dest, util.localpath(s[0])[striplen:])
                         if os.path.lexists(t):
                             score += 1
                     return score
 
                 abspfx = util.localpath(abspfx)
                 striplen = len(abspfx)
                 if striplen:
                     striplen += len(os.sep)
                 if os.path.isdir(os.path.join(dest, os.path.split(abspfx)[1])):
                     score = evalpath(striplen)
                     striplen1 = len(os.path.split(abspfx)[0])
                     if striplen1:
                         striplen1 += len(os.sep)
                     if evalpath(striplen1) > score:
                         striplen = striplen1
                 res = lambda p: os.path.join(dest,
                                              util.localpath(p)[striplen:])
             else:
                 # a file
                 if destdirexists:
                     res = lambda p: os.path.join(dest,
                                         os.path.basename(util.localpath(p)))
                 else:
                     res = lambda p: dest
         return res
 
 
     pats = scmutil.expandpats(pats)
     if not pats:
         raise util.Abort(_('no source or destination specified'))
     if len(pats) == 1:
         raise util.Abort(_('no destination specified'))
     dest = pats.pop()
     destdirexists = os.path.isdir(dest) and not os.path.islink(dest)
     if not destdirexists:
         if len(pats) > 1 or matchmod.patkind(pats[0]):
             raise util.Abort(_('with multiple sources, destination must be an '
                                'existing directory'))
         if util.endswithsep(dest):
             raise util.Abort(_('destination %s is not a directory') % dest)
 
     tfn = targetpathfn
     if after:
         tfn = targetpathafterfn
     copylist = []
     for pat in pats:
         srcs = walkpat(pat)
         if not srcs:
             continue
         copylist.append((tfn(pat, dest, srcs), srcs))
     if not copylist:
         raise util.Abort(_('no files to copy'))
 
     errors = 0
     for targetpath, srcs in copylist:
         for abssrc, relsrc, exact in srcs:
             if copyfile(abssrc, relsrc, targetpath(abssrc), exact):
                 errors += 1
 
     if errors:
         ui.warn(_('(consider using --after)\n'))
 
     return errors != 0
 
 def service(opts, parentfn=None, initfn=None, runfn=None, logfile=None,
     runargs=None, appendpid=False):
     '''Run a command as a service.'''
 
     if opts['daemon'] and not opts['daemon_pipefds']:
         # Signal child process startup with file removal
         lockfd, lockpath = tempfile.mkstemp(prefix='hg-service-')
         os.close(lockfd)
         try:
             if not runargs:
                 runargs = util.hgcmd() + sys.argv[1:]
             runargs.append('--daemon-pipefds=%s' % lockpath)
             # Don't pass --cwd to the child process, because we've already
             # changed directory.
             for i in xrange(1, len(runargs)):
                 if runargs[i].startswith('--cwd='):
                     del runargs[i]
                     break
                 elif runargs[i].startswith('--cwd'):
                     del runargs[i:i + 2]
                     break
             def condfn():
                 return not os.path.exists(lockpath)
             pid = util.rundetached(runargs, condfn)
             if pid < 0:
                 raise util.Abort(_('child process failed to start'))
         finally:
             try:
                 os.unlink(lockpath)
             except OSError, e:
                 if e.errno != errno.ENOENT:
                     raise
         if parentfn:
             return parentfn(pid)
         else:
             return
 
     if initfn:
         initfn()
 
     if opts['pid_file']:
         mode = appendpid and 'a' or 'w'
         fp = open(opts['pid_file'], mode)
         fp.write(str(os.getpid()) + '\n')
         fp.close()
 
     if opts['daemon_pipefds']:
         lockpath = opts['daemon_pipefds']
         try:
             os.setsid()
         except AttributeError:
             pass
         os.unlink(lockpath)
         util.hidewindow()
         sys.stdout.flush()
         sys.stderr.flush()
 
         nullfd = os.open(os.devnull, os.O_RDWR)
         logfilefd = nullfd
         if logfile:
             logfilefd = os.open(logfile, os.O_RDWR | os.O_CREAT | os.O_APPEND)
         os.dup2(nullfd, 0)
         os.dup2(logfilefd, 1)
         os.dup2(logfilefd, 2)
         if nullfd not in (0, 1, 2):
             os.close(nullfd)
         if logfile and logfilefd not in (0, 1, 2):
             os.close(logfilefd)
 
     if runfn:
         return runfn()
 
 def export(repo, revs, template='hg-%h.patch', fp=None, switch_parent=False,
            opts=None):
     '''export changesets as hg patches.'''
 
     total = len(revs)
     revwidth = max([len(str(rev)) for rev in revs])
 
     def single(rev, seqno, fp):
         ctx = repo[rev]
         node = ctx.node()
         parents = [p.node() for p in ctx.parents() if p]
         branch = ctx.branch()
         if switch_parent:
             parents.reverse()
         prev = (parents and parents[0]) or nullid
 
         shouldclose = False
         if not fp and len(template) > 0:
             desc_lines = ctx.description().rstrip().split('\n')
             desc = desc_lines[0]    #Commit always has a first line.
             fp = makefileobj(repo, template, node, desc=desc, total=total,
                              seqno=seqno, revwidth=revwidth, mode='ab')
             if fp != template:
                 shouldclose = True
         if fp and fp != sys.stdout and util.safehasattr(fp, 'name'):
             repo.ui.note("%s\n" % fp.name)
 
         if not fp:
             write = repo.ui.write
         else:
             def write(s, **kw):
                 fp.write(s)
 
 
         write("# HG changeset patch\n")
         write("# User %s\n" % ctx.user())
         write("# Date %d %d\n" % ctx.date())
         if branch and branch != 'default':
             write("# Branch %s\n" % branch)
         write("# Node ID %s\n" % hex(node))
         write("# Parent  %s\n" % hex(prev))
         if len(parents) > 1:
             write("# Parent  %s\n" % hex(parents[1]))
         write(ctx.description().rstrip())
         write("\n\n")
 
         for chunk, label in patch.diffui(repo, prev, node, opts=opts):
             write(chunk, label=label)
 
         if shouldclose:
             fp.close()
 
     for seqno, rev in enumerate(revs):
         single(rev, seqno + 1, fp)
 
 def diffordiffstat(ui, repo, diffopts, node1, node2, match,
                    changes=None, stat=False, fp=None, prefix='',
                    listsubrepos=False):
     '''show diff or diffstat.'''
     if fp is None:
         write = ui.write
     else:
         def write(s, **kw):
             fp.write(s)
 
     if stat:
         diffopts = diffopts.copy(context=0)
         width = 80
         if not ui.plain():
             width = ui.termwidth()
         chunks = patch.diff(repo, node1, node2, match, changes, diffopts,
                             prefix=prefix)
         for chunk, label in patch.diffstatui(util.iterlines(chunks),
                                              width=width,
                                              git=diffopts.git):
             write(chunk, label=label)
     else:
         for chunk, label in patch.diffui(repo, node1, node2, match,
                                          changes, diffopts, prefix=prefix):
             write(chunk, label=label)
 
     if listsubrepos:
         ctx1 = repo[node1]
         ctx2 = repo[node2]
         for subpath, sub in subrepo.itersubrepos(ctx1, ctx2):
             tempnode2 = node2
             try:
                 if node2 is not None:
                     tempnode2 = ctx2.substate[subpath][1]
             except KeyError:
                 # A subrepo that existed in node1 was deleted between node1 and
                 # node2 (inclusive). Thus, ctx2's substate won't contain that
                 # subpath. The best we can do is to ignore it.
                 tempnode2 = None
             submatch = matchmod.narrowmatcher(subpath, match)
             sub.diff(ui, diffopts, tempnode2, submatch, changes=changes,
                      stat=stat, fp=fp, prefix=prefix)
 
 class changeset_printer(object):
     '''show changeset information when templating not requested.'''
 
     def __init__(self, ui, repo, patch, diffopts, buffered):
         self.ui = ui
         self.repo = repo
         self.buffered = buffered
         self.patch = patch
         self.diffopts = diffopts
         self.header = {}
         self.hunk = {}
         self.lastheader = None
         self.footer = None
 
     def flush(self, rev):
         if rev in self.header:
             h = self.header[rev]
             if h != self.lastheader:
                 self.lastheader = h
                 self.ui.write(h)
             del self.header[rev]
         if rev in self.hunk:
             self.ui.write(self.hunk[rev])
             del self.hunk[rev]
             return 1
         return 0
 
     def close(self):
         if self.footer:
             self.ui.write(self.footer)
 
     def show(self, ctx, copies=None, matchfn=None, **props):
         if self.buffered:
             self.ui.pushbuffer()
             self._show(ctx, copies, matchfn, props)
             self.hunk[ctx.rev()] = self.ui.popbuffer(labeled=True)
         else:
             self._show(ctx, copies, matchfn, props)
 
     def _show(self, ctx, copies, matchfn, props):
         '''show a single changeset or file revision'''
         changenode = ctx.node()
         rev = ctx.rev()
 
         if self.ui.quiet:
             self.ui.write("%d:%s\n" % (rev, short(changenode)),
                           label='log.node')
             return
 
         log = self.repo.changelog
         date = util.datestr(ctx.date())
 
         hexfunc = self.ui.debugflag and hex or short
 
         parents = [(p, hexfunc(log.node(p)))
                    for p in self._meaningful_parentrevs(log, rev)]
 
         # i18n: column positioning for "hg log"
         self.ui.write(_("changeset:   %d:%s\n") % (rev, hexfunc(changenode)),
                       label='log.changeset changeset.%s' % ctx.phasestr())
 
         branch = ctx.branch()
         # don't show the default branch name
         if branch != 'default':
             # i18n: column positioning for "hg log"
             self.ui.write(_("branch:      %s\n") % branch,
                           label='log.branch')
         for bookmark in self.repo.nodebookmarks(changenode):
             # i18n: column positioning for "hg log"
             self.ui.write(_("bookmark:    %s\n") % bookmark,
                     label='log.bookmark')
         for tag in self.repo.nodetags(changenode):
             # i18n: column positioning for "hg log"
             self.ui.write(_("tag:         %s\n") % tag,
                           label='log.tag')
         if self.ui.debugflag and ctx.phase():
             # i18n: column positioning for "hg log"
             self.ui.write(_("phase:       %s\n") % _(ctx.phasestr()),
                           label='log.phase')
         for parent in parents:
             # i18n: column positioning for "hg log"
             self.ui.write(_("parent:      %d:%s\n") % parent,
                           label='log.parent changeset.%s' % ctx.phasestr())
 
         if self.ui.debugflag:
             mnode = ctx.manifestnode()
             # i18n: column positioning for "hg log"
             self.ui.write(_("manifest:    %d:%s\n") %
                           (self.repo.manifest.rev(mnode), hex(mnode)),
                           label='ui.debug log.manifest')
         # i18n: column positioning for "hg log"
         self.ui.write(_("user:        %s\n") % ctx.user(),
                       label='log.user')
         # i18n: column positioning for "hg log"
         self.ui.write(_("date:        %s\n") % date,
                       label='log.date')
 
         if self.ui.debugflag:
             files = self.repo.status(log.parents(changenode)[0], changenode)[:3]
             for key, value in zip([# i18n: column positioning for "hg log"
                                    _("files:"),
                                    # i18n: column positioning for "hg log"
                                    _("files+:"),
                                    # i18n: column positioning for "hg log"
                                    _("files-:")], files):
                 if value:
                     self.ui.write("%-12s %s\n" % (key, " ".join(value)),
                                   label='ui.debug log.files')
         elif ctx.files() and self.ui.verbose:
             # i18n: column positioning for "hg log"
             self.ui.write(_("files:       %s\n") % " ".join(ctx.files()),
                           label='ui.note log.files')
         if copies and self.ui.verbose:
             copies = ['%s (%s)' % c for c in copies]
             # i18n: column positioning for "hg log"
             self.ui.write(_("copies:      %s\n") % ' '.join(copies),
                           label='ui.note log.copies')
 
         extra = ctx.extra()
         if extra and self.ui.debugflag:
             for key, value in sorted(extra.items()):
                 # i18n: column positioning for "hg log"
                 self.ui.write(_("extra:       %s=%s\n")
                               % (key, value.encode('string_escape')),
                               label='ui.debug log.extra')
 
         description = ctx.description().strip()
         if description:
             if self.ui.verbose:
                 self.ui.write(_("description:\n"),
                               label='ui.note log.description')
                 self.ui.write(description,
                               label='ui.note log.description')
                 self.ui.write("\n\n")
             else:
                 # i18n: column positioning for "hg log"
                 self.ui.write(_("summary:     %s\n") %
                               description.splitlines()[0],
                               label='log.summary')
         self.ui.write("\n")
 
         self.showpatch(changenode, matchfn)
 
     def showpatch(self, node, matchfn):
         if not matchfn:
             matchfn = self.patch
         if matchfn:
             stat = self.diffopts.get('stat')
             diff = self.diffopts.get('patch')
             diffopts = patch.diffopts(self.ui, self.diffopts)
             prev = self.repo.changelog.parents(node)[0]
             if stat:
                 diffordiffstat(self.ui, self.repo, diffopts, prev, node,
                                match=matchfn, stat=True)
             if diff:
                 if stat:
                     self.ui.write("\n")
                 diffordiffstat(self.ui, self.repo, diffopts, prev, node,
                                match=matchfn, stat=False)
             self.ui.write("\n")
 
     def _meaningful_parentrevs(self, log, rev):
         """Return list of meaningful (or all if debug) parentrevs for rev.
 
         For merges (two non-nullrev revisions) both parents are meaningful.
         Otherwise the first parent revision is considered meaningful if it
         is not the preceding revision.
         """
         parents = log.parentrevs(rev)
         if not self.ui.debugflag and parents[1] == nullrev:
             if parents[0] >= rev - 1:
                 parents = []
             else:
                 parents = [parents[0]]
         return parents
 
 
 class changeset_templater(changeset_printer):
     '''format changeset information.'''
 
     def __init__(self, ui, repo, patch, diffopts, mapfile, buffered):
         changeset_printer.__init__(self, ui, repo, patch, diffopts, buffered)
         formatnode = ui.debugflag and (lambda x: x) or (lambda x: x[:12])
         defaulttempl = {
             'parent': '{rev}:{node|formatnode} ',
             'manifest': '{rev}:{node|formatnode}',
             'file_copy': '{name} ({source})',
             'extra': '{key}={value|stringescape}'
             }
         # filecopy is preserved for compatibility reasons
         defaulttempl['filecopy'] = defaulttempl['file_copy']
         self.t = templater.templater(mapfile, {'formatnode': formatnode},
                                      cache=defaulttempl)
         self.cache = {}
 
     def use_template(self, t):
         '''set template string to use'''
         self.t.cache['changeset'] = t
 
     def _meaningful_parentrevs(self, ctx):
         """Return list of meaningful (or all if debug) parentrevs for rev.
         """
         parents = ctx.parents()
         if len(parents) > 1:
             return parents
         if self.ui.debugflag:
             return [parents[0], self.repo['null']]
         if parents[0].rev() >= ctx.rev() - 1:
             return []
         return parents
 
     def _show(self, ctx, copies, matchfn, props):
         '''show a single changeset or file revision'''
 
         showlist = templatekw.showlist
 
         # showparents() behaviour depends on ui trace level which
         # causes unexpected behaviours at templating level and makes
         # it harder to extract it in a standalone function. Its
         # behaviour cannot be changed so leave it here for now.
         def showparents(**args):
             ctx = args['ctx']
             parents = [[('rev', p.rev()), ('node', p.hex())]
                        for p in self._meaningful_parentrevs(ctx)]
             return showlist('parent', parents, **args)
 
         props = props.copy()
         props.update(templatekw.keywords)
         props['parents'] = showparents
         props['templ'] = self.t
         props['ctx'] = ctx
         props['repo'] = self.repo
         props['revcache'] = {'copies': copies}
         props['cache'] = self.cache
 
         # find correct templates for current mode
 
         tmplmodes = [
             (True, None),
             (self.ui.verbose, 'verbose'),
             (self.ui.quiet, 'quiet'),
             (self.ui.debugflag, 'debug'),
         ]
 
         types = {'header': '', 'footer':'', 'changeset': 'changeset'}
         for mode, postfix  in tmplmodes:
             for type in types:
                 cur = postfix and ('%s_%s' % (type, postfix)) or type
                 if mode and cur in self.t:
                     types[type] = cur
 
         try:
 
             # write header
             if types['header']:
                 h = templater.stringify(self.t(types['header'], **props))
                 if self.buffered:
                     self.header[ctx.rev()] = h
                 else:
                     if self.lastheader != h:
                         self.lastheader = h
                         self.ui.write(h)
 
             # write changeset metadata, then patch if requested
             key = types['changeset']
             self.ui.write(templater.stringify(self.t(key, **props)))
             self.showpatch(ctx.node(), matchfn)
 
             if types['footer']:
                 if not self.footer:
                     self.footer = templater.stringify(self.t(types['footer'],
                                                       **props))
 
         except KeyError, inst:
             msg = _("%s: no key named '%s'")
             raise util.Abort(msg % (self.t.mapfile, inst.args[0]))
         except SyntaxError, inst:
             raise util.Abort('%s: %s' % (self.t.mapfile, inst.args[0]))
 
 def show_changeset(ui, repo, opts, buffered=False):
     """show one changeset using template or regular display.
 
     Display format will be the first non-empty hit of:
     1. option 'template'
     2. option 'style'
     3. [ui] setting 'logtemplate'
     4. [ui] setting 'style'
     If all of these values are either the unset or the empty string,
     regular display via changeset_printer() is done.
     """
     # options
     patch = False
     if opts.get('patch') or opts.get('stat'):
         patch = scmutil.matchall(repo)
 
     tmpl = opts.get('template')
     style = None
     if tmpl:
         tmpl = templater.parsestring(tmpl, quoted=False)
     else:
         style = opts.get('style')
 
     # ui settings
     if not (tmpl or style):
         tmpl = ui.config('ui', 'logtemplate')
         if tmpl:
             try:
                 tmpl = templater.parsestring(tmpl)
             except SyntaxError:
                 tmpl = templater.parsestring(tmpl, quoted=False)
         else:
             style = util.expandpath(ui.config('ui', 'style', ''))
 
     if not (tmpl or style):
         return changeset_printer(ui, repo, patch, opts, buffered)
 
     mapfile = None
     if style and not tmpl:
         mapfile = style
         if not os.path.split(mapfile)[0]:
             mapname = (templater.templatepath('map-cmdline.' + mapfile)
                        or templater.templatepath(mapfile))
             if mapname:
                 mapfile = mapname
 
     try:
         t = changeset_templater(ui, repo, patch, opts, mapfile, buffered)
     except SyntaxError, inst:
         raise util.Abort(inst.args[0])
     if tmpl:
         t.use_template(tmpl)
     return t
 
 def finddate(ui, repo, date):
     """Find the tipmost changeset that matches the given date spec"""
 
     df = util.matchdate(date)
     m = scmutil.matchall(repo)
     results = {}
 
     def prep(ctx, fns):
         d = ctx.date()
         if df(d[0]):
             results[ctx.rev()] = d
 
     for ctx in walkchangerevs(repo, m, {'rev': None}, prep):
         rev = ctx.rev()
         if rev in results:
             ui.status(_("found revision %s from %s\n") %
                       (rev, util.datestr(results[rev])))
             return str(rev)
 
     raise util.Abort(_("revision matching date not found"))
 
 def increasingwindows(start, end, windowsize=8, sizelimit=512):
     if start < end:
         while start < end:
             yield start, min(windowsize, end - start)
             start += windowsize
             if windowsize < sizelimit:
                 windowsize *= 2
     else:
         while start > end:
             yield start, min(windowsize, start - end - 1)
             start -= windowsize
             if windowsize < sizelimit:
                 windowsize *= 2
 
 def walkchangerevs(repo, match, opts, prepare):
     '''Iterate over files and the revs in which they changed.
 
     Callers most commonly need to iterate backwards over the history
     in which they are interested. Doing so has awful (quadratic-looking)
     performance, so we use iterators in a "windowed" way.
 
     We walk a window of revisions in the desired order.  Within the
     window, we first walk forwards to gather data, then in the desired
     order (usually backwards) to display it.
 
     This function returns an iterator yielding contexts. Before
     yielding each context, the iterator will first call the prepare
     function on each context in the window in forward order.'''
 
     follow = opts.get('follow') or opts.get('follow_first')
 
     if not len(repo):
         return []
     if opts.get('rev'):
         revs = scmutil.revrange(repo, opts.get('rev'))
     elif follow:
         revs = repo.revs('reverse(:.)')
     else:
         revs = list(repo)
         revs.reverse()
     if not revs:
         return []
     wanted = set()
     slowpath = match.anypats() or (match.files() and opts.get('removed'))
     fncache = {}
     change = repo.changectx
 
     # First step is to fill wanted, the set of revisions that we want to yield.
     # When it does not induce extra cost, we also fill fncache for revisions in
     # wanted: a cache of filenames that were changed (ctx.files()) and that
     # match the file filtering conditions.
 
     if not slowpath and not match.files():
         # No files, no patterns.  Display all revs.
         wanted = set(revs)
     copies = []
 
     if not slowpath and match.files():
         # We only have to read through the filelog to find wanted revisions
 
         minrev, maxrev = min(revs), max(revs)
         def filerevgen(filelog, last):
             """
             Only files, no patterns.  Check the history of each file.
 
             Examines filelog entries within minrev, maxrev linkrev range
             Returns an iterator yielding (linkrev, parentlinkrevs, copied)
             tuples in backwards order
             """
             cl_count = len(repo)
             revs = []
             for j in xrange(0, last + 1):
                 linkrev = filelog.linkrev(j)
                 if linkrev < minrev:
                     continue
                 # only yield rev for which we have the changelog, it can
                 # happen while doing "hg log" during a pull or commit
                 if linkrev >= cl_count:
                     break
 
                 parentlinkrevs = []
                 for p in filelog.parentrevs(j):
                     if p != nullrev:
                         parentlinkrevs.append(filelog.linkrev(p))
                 n = filelog.node(j)
                 revs.append((linkrev, parentlinkrevs,
                              follow and filelog.renamed(n)))
 
             return reversed(revs)
         def iterfiles():
             pctx = repo['.']
             for filename in match.files():
                 if follow:
                     if filename not in pctx:
                         raise util.Abort(_('cannot follow file not in parent '
                                            'revision: "%s"') % filename)
                     yield filename, pctx[filename].filenode()
                 else:
                     yield filename, None
             for filename_node in copies:
                 yield filename_node
         for file_, node in iterfiles():
             filelog = repo.file(file_)
             if not len(filelog):
                 if node is None:
                     # A zero count may be a directory or deleted file, so
                     # try to find matching entries on the slow path.
                     if follow:
                         raise util.Abort(
                             _('cannot follow nonexistent file: "%s"') % file_)
                     slowpath = True
                     break
                 else:
                     continue
 
             if node is None:
                 last = len(filelog) - 1
             else:
                 last = filelog.rev(node)
 
 
             # keep track of all ancestors of the file
             ancestors = set([filelog.linkrev(last)])
 
             # iterate from latest to oldest revision
             for rev, flparentlinkrevs, copied in filerevgen(filelog, last):
                 if not follow:
                     if rev > maxrev:
                         continue
                 else:
                     # Note that last might not be the first interesting
                     # rev to us:
                     # if the file has been changed after maxrev, we'll
                     # have linkrev(last) > maxrev, and we still need
                     # to explore the file graph
                     if rev not in ancestors:
                         continue
                     # XXX insert 1327 fix here
                     if flparentlinkrevs:
                         ancestors.update(flparentlinkrevs)
 
                 fncache.setdefault(rev, []).append(file_)
                 wanted.add(rev)
                 if copied:
                     copies.append(copied)
 
         # We decided to fall back to the slowpath because at least one
         # of the paths was not a file. Check to see if at least one of them
         # existed in history, otherwise simply return
         if slowpath:
             for path in match.files():
                 if path == '.' or path in repo.store:
                     break
-                else:
-                    return []
+            else:
+                return []
 
     if slowpath:
         # We have to read the changelog to match filenames against
         # changed files
 
         if follow:
             raise util.Abort(_('can only follow copies/renames for explicit '
                                'filenames'))
 
         # The slow path checks files modified in every changeset.
         for i in sorted(revs):
             ctx = change(i)
             matches = filter(match, ctx.files())
             if matches:
                 fncache[i] = matches
                 wanted.add(i)
 
     class followfilter(object):
         def __init__(self, onlyfirst=False):
             self.startrev = nullrev
             self.roots = set()
             self.onlyfirst = onlyfirst
 
         def match(self, rev):
             def realparents(rev):
                 if self.onlyfirst:
                     return repo.changelog.parentrevs(rev)[0:1]
                 else:
                     return filter(lambda x: x != nullrev,
                                   repo.changelog.parentrevs(rev))
 
             if self.startrev == nullrev:
                 self.startrev = rev
                 return True
 
             if rev > self.startrev:
                 # forward: all descendants
                 if not self.roots:
                     self.roots.add(self.startrev)
                 for parent in realparents(rev):
                     if parent in self.roots:
                         self.roots.add(rev)
                         return True
             else:
                 # backwards: all parents
                 if not self.roots:
                     self.roots.update(realparents(self.startrev))
                 if rev in self.roots:
                     self.roots.remove(rev)
                     self.roots.update(realparents(rev))
                     return True
 
             return False
 
     # it might be worthwhile to do this in the iterator if the rev range
     # is descending and the prune args are all within that range
     for rev in opts.get('prune', ()):
         rev = repo[rev].rev()
         ff = followfilter()
         stop = min(revs[0], revs[-1])
         for x in xrange(rev, stop - 1, -1):
             if ff.match(x):
                 wanted.discard(x)
 
     # Now that wanted is correctly initialized, we can iterate over the
     # revision range, yielding only revisions in wanted.
     def iterate():
         if follow and not match.files():
             ff = followfilter(onlyfirst=opts.get('follow_first'))
             def want(rev):
                 return ff.match(rev) and rev in wanted
         else:
             def want(rev):
                 return rev in wanted
 
         for i, window in increasingwindows(0, len(revs)):
             nrevs = [rev for rev in revs[i:i + window] if want(rev)]
             for rev in sorted(nrevs):
                 fns = fncache.get(rev)
                 ctx = change(rev)
                 if not fns:
                     def fns_generator():
                         for f in ctx.files():
                             if match(f):
                                 yield f
                     fns = fns_generator()
                 prepare(ctx, fns)
             for rev in nrevs:
                 yield change(rev)
     return iterate()
 
 def _makegraphfilematcher(repo, pats, followfirst):
     # When displaying a revision with --patch --follow FILE, we have
     # to know which file of the revision must be diffed. With
     # --follow, we want the names of the ancestors of FILE in the
     # revision, stored in "fcache". "fcache" is populated by
     # reproducing the graph traversal already done by --follow revset
     # and relating linkrevs to file names (which is not "correct" but
     # good enough).
     fcache = {}
     fcacheready = [False]
     pctx = repo['.']
     wctx = repo[None]
 
     def populate():
         for fn in pats:
             for i in ((pctx[fn],), pctx[fn].ancestors(followfirst=followfirst)):
                 for c in i:
                     fcache.setdefault(c.linkrev(), set()).add(c.path())
 
     def filematcher(rev):
         if not fcacheready[0]:
             # Lazy initialization
             fcacheready[0] = True
             populate()
         return scmutil.match(wctx, fcache.get(rev, []), default='path')
 
     return filematcher
 
 def _makegraphlogrevset(repo, pats, opts, revs):
     """Return (expr, filematcher) where expr is a revset string built
     from log options and file patterns or None. If --stat or --patch
     are not passed filematcher is None. Otherwise it is a callable
     taking a revision number and returning a match objects filtering
     the files to be detailed when displaying the revision.
     """
     opt2revset = {
         'no_merges':        ('not merge()', None),
         'only_merges':      ('merge()', None),
         '_ancestors':       ('ancestors(%(val)s)', None),
         '_fancestors':      ('_firstancestors(%(val)s)', None),
         '_descendants':     ('descendants(%(val)s)', None),
         '_fdescendants':    ('_firstdescendants(%(val)s)', None),
         '_matchfiles':      ('_matchfiles(%(val)s)', None),
         'date':             ('date(%(val)r)', None),
         'branch':           ('branch(%(val)r)', ' or '),
         '_patslog':         ('filelog(%(val)r)', ' or '),
         '_patsfollow':      ('follow(%(val)r)', ' or '),
         '_patsfollowfirst': ('_followfirst(%(val)r)', ' or '),
         'keyword':          ('keyword(%(val)r)', ' or '),
         'prune':            ('not (%(val)r or ancestors(%(val)r))', ' and '),
         'user':             ('user(%(val)r)', ' or '),
         }
 
     opts = dict(opts)
     # follow or not follow?
     follow = opts.get('follow') or opts.get('follow_first')
     followfirst = opts.get('follow_first') and 1 or 0
     # --follow with FILE behaviour depends on revs...
     startrev = revs[0]
     followdescendants = (len(revs) > 1 and revs[0] < revs[1]) and 1 or 0
 
     # branch and only_branch are really aliases and must be handled at
     # the same time
     opts['branch'] = opts.get('branch', []) + opts.get('only_branch', [])
     opts['branch'] = [repo.lookupbranch(b) for b in opts['branch']]
     # pats/include/exclude are passed to match.match() directly in
     # _matchfiles() revset but walkchangerevs() builds its matcher with
     # scmutil.match(). The difference is input pats are globbed on
     # platforms without shell expansion (windows).
     pctx = repo[None]
     match, pats = scmutil.matchandpats(pctx, pats, opts)
     slowpath = match.anypats() or (match.files() and opts.get('removed'))
     if not slowpath:
         for f in match.files():
             if follow and f not in pctx:
                 raise util.Abort(_('cannot follow file not in parent '
                                    'revision: "%s"') % f)
             filelog = repo.file(f)
             if not len(filelog):
                 # A zero count may be a directory or deleted file, so
                 # try to find matching entries on the slow path.
                 if follow:
                     raise util.Abort(
                         _('cannot follow nonexistent file: "%s"') % f)
                 slowpath = True
 
         # We decided to fall back to the slowpath because at least one
         # of the paths was not a file. Check to see if at least one of them
         # existed in history - in that case, we'll continue down the
         # slowpath; otherwise, we can turn off the slowpath
         if slowpath:
             for path in match.files():
                 if path == '.' or path in repo.store:
                     break
             else:
                 slowpath = False
 
     if slowpath:
         # See walkchangerevs() slow path.
         #
         if follow:
             raise util.Abort(_('can only follow copies/renames for explicit '
                                'filenames'))
         # pats/include/exclude cannot be represented as separate
         # revset expressions as their filtering logic applies at file
         # level. For instance "-I a -X a" matches a revision touching
         # "a" and "b" while "file(a) and not file(b)" does
         # not. Besides, filesets are evaluated against the working
         # directory.
         matchargs = ['r:', 'd:relpath']
         for p in pats:
             matchargs.append('p:' + p)
         for p in opts.get('include', []):
             matchargs.append('i:' + p)
         for p in opts.get('exclude', []):
             matchargs.append('x:' + p)
         matchargs = ','.join(('%r' % p) for p in matchargs)
         opts['_matchfiles'] = matchargs
     else:
         if follow:
             fpats = ('_patsfollow', '_patsfollowfirst')
             fnopats = (('_ancestors', '_fancestors'),
                        ('_descendants', '_fdescendants'))
             if pats:
                 # follow() revset interprets its file argument as a
                 # manifest entry, so use match.files(), not pats.
                 opts[fpats[followfirst]] = list(match.files())
             else:
                 opts[fnopats[followdescendants][followfirst]] = str(startrev)
         else:
             opts['_patslog'] = list(pats)
 
     filematcher = None
     if opts.get('patch') or opts.get('stat'):
         if follow:
             filematcher = _makegraphfilematcher(repo, pats, followfirst)
         else:
             filematcher = lambda rev: match
 
     expr = []
     for op, val in opts.iteritems():
         if not val:
             continue
         if op not in opt2revset:
             continue
         revop, andor = opt2revset[op]
         if '%(val)' not in revop:
             expr.append(revop)
         else:
             if not isinstance(val, list):
                 e = revop % {'val': val}
             else:
                 e = '(' + andor.join((revop % {'val': v}) for v in val) + ')'
             expr.append(e)
 
     if expr:
         expr = '(' + ' and '.join(expr) + ')'
     else:
         expr = None
     return expr, filematcher
 
 def getgraphlogrevs(repo, pats, opts):
     """Return (revs, expr, filematcher) where revs is an iterable of
     revision numbers, expr is a revset string built from log options
     and file patterns or None, and used to filter 'revs'. If --stat or
     --patch are not passed filematcher is None. Otherwise it is a
     callable taking a revision number and returning a match objects
     filtering the files to be detailed when displaying the revision.
     """
     if not len(repo):
         return [], None, None
     limit = loglimit(opts)
     # Default --rev value depends on --follow but --follow behaviour
     # depends on revisions resolved from --rev...
     follow = opts.get('follow') or opts.get('follow_first')
     possiblyunsorted = False # whether revs might need sorting
     if opts.get('rev'):
         revs = scmutil.revrange(repo, opts['rev'])
         # Don't sort here because _makegraphlogrevset might depend on the
         # order of revs
         possiblyunsorted = True
     else:
         if follow and len(repo) > 0:
             revs = repo.revs('reverse(:.)')
         else:
             revs = list(repo.changelog)
             revs.reverse()
     if not revs:
         return [], None, None
     expr, filematcher = _makegraphlogrevset(repo, pats, opts, revs)
     if possiblyunsorted:
         revs.sort(reverse=True)
     if expr:
         # Revset matchers often operate faster on revisions in changelog
         # order, because most filters deal with the changelog.
         revs.reverse()
         matcher = revset.match(repo.ui, expr)
         # Revset matches can reorder revisions. "A or B" typically returns
         # returns the revision matching A then the revision matching B. Sort
         # again to fix that.
         revs = matcher(repo, revs)
         revs.sort(reverse=True)
     if limit is not None:
         revs = revs[:limit]
 
     return revs, expr, filematcher
 
 def displaygraph(ui, dag, displayer, showparents, edgefn, getrenamed=None,
                  filematcher=None):
     seen, state = [], graphmod.asciistate()
     for rev, type, ctx, parents in dag:
         char = 'o'
         if ctx.node() in showparents:
             char = '@'
         elif ctx.obsolete():
             char = 'x'
         copies = None
         if getrenamed and ctx.rev():
             copies = []
             for fn in ctx.files():
                 rename = getrenamed(fn, ctx.rev())
                 if rename:
                     copies.append((fn, rename[0]))
         revmatchfn = None
         if filematcher is not None:
             revmatchfn = filematcher(ctx.rev())
         displayer.show(ctx, copies=copies, matchfn=revmatchfn)
         lines = displayer.hunk.pop(rev).split('\n')
         if not lines[-1]:
             del lines[-1]
         displayer.flush(rev)
         edges = edgefn(type, char, lines, seen, rev, parents)
         for type, char, lines, coldata in edges:
             graphmod.ascii(ui, state, type, char, lines, coldata)
     displayer.close()
 
 def graphlog(ui, repo, *pats, **opts):
     # Parameters are identical to log command ones
     revs, expr, filematcher = getgraphlogrevs(repo, pats, opts)
     revdag = graphmod.dagwalker(repo, revs)
 
     getrenamed = None
     if opts.get('copies'):
         endrev = None
         if opts.get('rev'):
             endrev = max(scmutil.revrange(repo, opts.get('rev'))) + 1
         getrenamed = templatekw.getrenamedfn(repo, endrev=endrev)
     displayer = show_changeset(ui, repo, opts, buffered=True)
     showparents = [ctx.node() for ctx in repo[None].parents()]
     displaygraph(ui, revdag, displayer, showparents,
                  graphmod.asciiedges, getrenamed, filematcher)
 
 def checkunsupportedgraphflags(pats, opts):
     for op in ["newest_first"]:
         if op in opts and opts[op]:
             raise util.Abort(_("-G/--graph option is incompatible with --%s")
                              % op.replace("_", "-"))
 
 def graphrevs(repo, nodes, opts):
     limit = loglimit(opts)
     nodes.reverse()
     if limit is not None:
         nodes = nodes[:limit]
     return graphmod.nodes(repo, nodes)
 
 def add(ui, repo, match, dryrun, listsubrepos, prefix, explicitonly):
     join = lambda f: os.path.join(prefix, f)
     bad = []
     oldbad = match.bad
     match.bad = lambda x, y: bad.append(x) or oldbad(x, y)
     names = []
     wctx = repo[None]
     cca = None
     abort, warn = scmutil.checkportabilityalert(ui)
     if abort or warn:
         cca = scmutil.casecollisionauditor(ui, abort, repo.dirstate)
     for f in repo.walk(match):
         exact = match.exact(f)
         if exact or not explicitonly and f not in repo.dirstate:
             if cca:
                 cca(f)
             names.append(f)
             if ui.verbose or not exact:
                 ui.status(_('adding %s\n') % match.rel(join(f)))
 
     for subpath in wctx.substate:
         sub = wctx.sub(subpath)
         try:
             submatch = matchmod.narrowmatcher(subpath, match)
             if listsubrepos:
                 bad.extend(sub.add(ui, submatch, dryrun, listsubrepos, prefix,
                                    False))
             else:
                 bad.extend(sub.add(ui, submatch, dryrun, listsubrepos, prefix,
                                    True))
         except error.LookupError:
             ui.status(_("skipping missing subrepository: %s\n")
                            % join(subpath))
 
     if not dryrun:
         rejected = wctx.add(names, prefix)
         bad.extend(f for f in rejected if f in match.files())
     return bad
 
 def forget(ui, repo, match, prefix, explicitonly):
     join = lambda f: os.path.join(prefix, f)
     bad = []
     oldbad = match.bad
     match.bad = lambda x, y: bad.append(x) or oldbad(x, y)
     wctx = repo[None]
     forgot = []
     s = repo.status(match=match, clean=True)
     forget = sorted(s[0] + s[1] + s[3] + s[6])
     if explicitonly:
         forget = [f for f in forget if match.exact(f)]
 
     for subpath in wctx.substate:
         sub = wctx.sub(subpath)
         try:
             submatch = matchmod.narrowmatcher(subpath, match)
             subbad, subforgot = sub.forget(ui, submatch, prefix)
             bad.extend([subpath + '/' + f for f in subbad])
             forgot.extend([subpath + '/' + f for f in subforgot])
         except error.LookupError:
             ui.status(_("skipping missing subrepository: %s\n")
                            % join(subpath))
 
     if not explicitonly:
         for f in match.files():
             if f not in repo.dirstate and not os.path.isdir(match.rel(join(f))):
                 if f not in forgot:
                     if os.path.exists(match.rel(join(f))):
                         ui.warn(_('not removing %s: '
                                   'file is already untracked\n')
                                 % match.rel(join(f)))
                     bad.append(f)
 
     for f in forget:
         if ui.verbose or not match.exact(f):
             ui.status(_('removing %s\n') % match.rel(join(f)))
 
     rejected = wctx.forget(forget, prefix)
     bad.extend(f for f in rejected if f in match.files())
     forgot.extend(forget)
     return bad, forgot
 
 def duplicatecopies(repo, rev, p1):
     "Reproduce copies found in the source revision in the dirstate for grafts"
     for dst, src in copies.pathcopies(repo[p1], repo[rev]).iteritems():
         repo.dirstate.copy(src, dst)
 
 def commit(ui, repo, commitfunc, pats, opts):
     '''commit the specified files or all outstanding changes'''
     date = opts.get('date')
     if date:
         opts['date'] = util.parsedate(date)
     message = logmessage(ui, opts)
 
     # extract addremove carefully -- this function can be called from a command
     # that doesn't support addremove
     if opts.get('addremove'):
         scmutil.addremove(repo, pats, opts)
 
     return commitfunc(ui, repo, message,
                       scmutil.match(repo[None], pats, opts), opts)
 
 def amend(ui, repo, commitfunc, old, extra, pats, opts):
     ui.note(_('amending changeset %s\n') % old)
     base = old.p1()
 
     wlock = lock = newid = None
     try:
         wlock = repo.wlock()
         lock = repo.lock()
         tr = repo.transaction('amend')
         try:
             # See if we got a message from -m or -l, if not, open the editor
             # with the message of the changeset to amend
             message = logmessage(ui, opts)
             # ensure logfile does not conflict with later enforcement of the
             # message. potential logfile content has been processed by
             # `logmessage` anyway.
             opts.pop('logfile')
             # First, do a regular commit to record all changes in the working
             # directory (if there are any)
             ui.callhooks = False
             currentbookmark = repo._bookmarkcurrent
             try:
                 repo._bookmarkcurrent = None
                 opts['message'] = 'temporary amend commit for %s' % old
                 node = commit(ui, repo, commitfunc, pats, opts)
             finally:
                 repo._bookmarkcurrent = currentbookmark
                 ui.callhooks = True
             ctx = repo[node]
 
             # Participating changesets:
             #
             # node/ctx o - new (intermediate) commit that contains changes
             #          |   from working dir to go into amending commit
             #          |   (or a workingctx if there were no changes)
             #          |
             # old      o - changeset to amend
             #          |
             # base     o - parent of amending changeset
 
             # Update extra dict from amended commit (e.g. to preserve graft
             # source)
             extra.update(old.extra())
 
             # Also update it from the intermediate commit or from the wctx
             extra.update(ctx.extra())
 
             files = set(old.files())
 
             # Second, we use either the commit we just did, or if there were no
             # changes the parent of the working directory as the version of the
             # files in the final amend commit
             if node:
                 ui.note(_('copying changeset %s to %s\n') % (ctx, base))
 
                 user = ctx.user()
                 date = ctx.date()
                 # Recompute copies (avoid recording a -> b -> a)
                 copied = copies.pathcopies(base, ctx)
 
                 # Prune files which were reverted by the updates: if old
                 # introduced file X and our intermediate commit, node,
                 # renamed that file, then those two files are the same and
                 # we can discard X from our list of files. Likewise if X
                 # was deleted, it's no longer relevant
                 files.update(ctx.files())
 
                 def samefile(f):
                     if f in ctx.manifest():
                         a = ctx.filectx(f)
                         if f in base.manifest():
                             b = base.filectx(f)
                             return (not a.cmp(b)
                                     and a.flags() == b.flags())
                         else:
                             return False
                     else:
                         return f not in base.manifest()
                 files = [f for f in files if not samefile(f)]
 
                 def filectxfn(repo, ctx_, path):
                     try:
                         fctx = ctx[path]
                         flags = fctx.flags()
                         mctx = context.memfilectx(fctx.path(), fctx.data(),
                                                   islink='l' in flags,
                                                   isexec='x' in flags,
                                                   copied=copied.get(path))
                         return mctx
                     except KeyError:
                         raise IOError
             else:
                 ui.note(_('copying changeset %s to %s\n') % (old, base))
 
                 # Use version of files as in the old cset
                 def filectxfn(repo, ctx_, path):
                     try:
                         return old.filectx(path)
                     except KeyError:
                         raise IOError
 
                 user = opts.get('user') or old.user()
                 date = opts.get('date') or old.date()
             editmsg = False
             if not message:
                 editmsg = True
                 message = old.description()
 
             pureextra = extra.copy()
             extra['amend_source'] = old.hex()
 
             new = context.memctx(repo,
                                  parents=[base.node(), nullid],
                                  text=message,
                                  files=files,
                                  filectxfn=filectxfn,
                                  user=user,
                                  date=date,
                                  extra=extra)
             if editmsg:
                 new._text = commitforceeditor(repo, new, [])
 
             newdesc =  changelog.stripdesc(new.description())
             if ((not node)
                 and newdesc == old.description()
                 and user == old.user()
                 and date == old.date()
                 and pureextra == old.extra()):
                 # nothing changed. continuing here would create a new node
                 # anyway because of the amend_source noise.
                 #
                 # This not what we expect from amend.
                 return old.node()
 
             ph = repo.ui.config('phases', 'new-commit', phases.draft)
             try:
                 repo.ui.setconfig('phases', 'new-commit', old.phase())
                 newid = repo.commitctx(new)
             finally:
                 repo.ui.setconfig('phases', 'new-commit', ph)
             if newid != old.node():
                 # Reroute the working copy parent to the new changeset
                 repo.setparents(newid, nullid)
 
                 # Move bookmarks from old parent to amend commit
                 bms = repo.nodebookmarks(old.node())
                 if bms:
                     marks = repo._bookmarks
                     for bm in bms:
                         marks[bm] = newid
                     marks.write()
             #commit the whole amend process
             if obsolete._enabled and newid != old.node():
                 # mark the new changeset as successor of the rewritten one
                 new = repo[newid]
                 obs = [(old, (new,))]
                 if node:
                     obs.append((ctx, ()))
 
                 obsolete.createmarkers(repo, obs)
             tr.close()
         finally:
             tr.release()
         if (not obsolete._enabled) and newid != old.node():
             # Strip the intermediate commit (if there was one) and the amended
             # commit
             if node:
                 ui.note(_('stripping intermediate changeset %s\n') % ctx)
             ui.note(_('stripping amended changeset %s\n') % old)
             repair.strip(ui, repo, old.node(), topic='amend-backup')
     finally:
         if newid is None:
             repo.dirstate.invalidate()
         lockmod.release(wlock, lock)
     return newid
 
 def commiteditor(repo, ctx, subs):
     if ctx.description():
         return ctx.description()
     return commitforceeditor(repo, ctx, subs)
 
 def commitforceeditor(repo, ctx, subs):
     edittext = []
     modified, added, removed = ctx.modified(), ctx.added(), ctx.removed()
     if ctx.description():
         edittext.append(ctx.description())
     edittext.append("")
     edittext.append("") # Empty line between message and comments.
     edittext.append(_("HG: Enter commit message."
                       "  Lines beginning with 'HG:' are removed."))
     edittext.append(_("HG: Leave message empty to abort commit."))
     edittext.append("HG: --")
     edittext.append(_("HG: user: %s") % ctx.user())
     if ctx.p2():
         edittext.append(_("HG: branch merge"))
     if ctx.branch():
         edittext.append(_("HG: branch '%s'") % ctx.branch())
     edittext.extend([_("HG: subrepo %s") % s for s in subs])
     edittext.extend([_("HG: added %s") % f for f in added])
     edittext.extend([_("HG: changed %s") % f for f in modified])
     edittext.extend([_("HG: removed %s") % f for f in removed])
     if not added and not modified and not removed:
         edittext.append(_("HG: no files changed"))
     edittext.append("")
     # run editor in the repository root
     olddir = os.getcwd()
     os.chdir(repo.root)
     text = repo.ui.edit("\n".join(edittext), ctx.user())
     text = re.sub("(?m)^HG:.*(\n|$)", "", text)
     os.chdir(olddir)
 
     if not text.strip():
         raise util.Abort(_("empty commit message"))
 
     return text
 
 def revert(ui, repo, ctx, parents, *pats, **opts):
     parent, p2 = parents
     node = ctx.node()
 
     mf = ctx.manifest()
     if node == parent:
         pmf = mf
     else:
         pmf = None
 
     # need all matching names in dirstate and manifest of target rev,
     # so have to walk both. do not print errors if files exist in one
     # but not other.
 
     names = {}
 
     wlock = repo.wlock()
     try:
         # walk dirstate.
 
         m = scmutil.match(repo[None], pats, opts)
         m.bad = lambda x, y: False
         for abs in repo.walk(m):
             names[abs] = m.rel(abs), m.exact(abs)
 
         # walk target manifest.
 
         def badfn(path, msg):
             if path in names:
                 return
             if path in ctx.substate:
                 return
             path_ = path + '/'
             for f in names:
                 if f.startswith(path_):
                     return
             ui.warn("%s: %s\n" % (m.rel(path), msg))
 
         m = scmutil.match(ctx, pats, opts)
         m.bad = badfn
         for abs in ctx.walk(m):
             if abs not in names:
                 names[abs] = m.rel(abs), m.exact(abs)
 
         # get the list of subrepos that must be reverted
         targetsubs = [s for s in ctx.substate if m(s)]
         m = scmutil.matchfiles(repo, names)
         changes = repo.status(match=m)[:4]
         modified, added, removed, deleted = map(set, changes)
 
         # if f is a rename, also revert the source
         cwd = repo.getcwd()
         for f in added:
             src = repo.dirstate.copied(f)
             if src and src not in names and repo.dirstate[src] == 'r':
                 removed.add(src)
                 names[src] = (repo.pathto(src, cwd), True)
 
         def removeforget(abs):
             if repo.dirstate[abs] == 'a':
                 return _('forgetting %s\n')
             return _('removing %s\n')
 
         revert = ([], _('reverting %s\n'))
         add = ([], _('adding %s\n'))
         remove = ([], removeforget)
         undelete = ([], _('undeleting %s\n'))
 
         disptable = (
             # dispatch table:
             #   file state
             #   action if in target manifest
             #   action if not in target manifest
             #   make backup if in target manifest
             #   make backup if not in target manifest
             (modified, revert, remove, True, True),
             (added, revert, remove, True, False),
             (removed, undelete, None, False, False),
             (deleted, revert, remove, False, False),
             )
 
         for abs, (rel, exact) in sorted(names.items()):
             mfentry = mf.get(abs)
             target = repo.wjoin(abs)
             def handle(xlist, dobackup):
                 xlist[0].append(abs)
                 if (dobackup and not opts.get('no_backup') and
                     os.path.lexists(target)):
                     bakname = "%s.orig" % rel
                     ui.note(_('saving current version of %s as %s\n') %
                             (rel, bakname))
                     if not opts.get('dry_run'):
                         util.rename(target, bakname)
                 if ui.verbose or not exact:
                     msg = xlist[1]
                     if not isinstance(msg, basestring):
                         msg = msg(abs)
                     ui.status(msg % rel)
             for table, hitlist, misslist, backuphit, backupmiss in disptable:
                 if abs not in table:
                     continue
                 # file has changed in dirstate
                 if mfentry:
                     handle(hitlist, backuphit)
                 elif misslist is not None:
                     handle(misslist, backupmiss)
                 break
             else:
                 if abs not in repo.dirstate:
                     if mfentry:
                         handle(add, True)
                     elif exact:
                         ui.warn(_('file not managed: %s\n') % rel)
                     continue
                 # file has not changed in dirstate
                 if node == parent:
                     if exact:
                         ui.warn(_('no changes needed to %s\n') % rel)
                     continue
                 if pmf is None:
                     # only need parent manifest in this unlikely case,
                     # so do not read by default
                     pmf = repo[parent].manifest()
                 if abs in pmf and mfentry:
                     # if version of file is same in parent and target
                     # manifests, do nothing
                     if (pmf[abs] != mfentry or
                         pmf.flags(abs) != mf.flags(abs)):
                         handle(revert, False)
                 else:
                     handle(remove, False)
 
         if not opts.get('dry_run'):
             def checkout(f):
                 fc = ctx[f]
                 repo.wwrite(f, fc.data(), fc.flags())
 
             audit_path = scmutil.pathauditor(repo.root)
             for f in remove[0]:
                 if repo.dirstate[f] == 'a':
                     repo.dirstate.drop(f)
                     continue
                 audit_path(f)
                 try:
                     util.unlinkpath(repo.wjoin(f))
                 except OSError:
                     pass
                 repo.dirstate.remove(f)
 
             normal = None
             if node == parent:
                 # We're reverting to our parent. If possible, we'd like status
                 # to report the file as clean. We have to use normallookup for
                 # merges to avoid losing information about merged/dirty files.
                 if p2 != nullid:
                     normal = repo.dirstate.normallookup
                 else:
                     normal = repo.dirstate.normal
             for f in revert[0]:
                 checkout(f)
                 if normal:
                     normal(f)
 
             for f in add[0]:
                 checkout(f)
                 repo.dirstate.add(f)
 
             normal = repo.dirstate.normallookup
             if node == parent and p2 == nullid:
                 normal = repo.dirstate.normal
             for f in undelete[0]:
                 checkout(f)
                 normal(f)
 
             if targetsubs:
                 # Revert the subrepos on the revert list
                 for sub in targetsubs:
                     ctx.sub(sub).revert(ui, ctx.substate[sub], *pats, **opts)
     finally:
         wlock.release()
 
 def command(table):
     '''returns a function object bound to table which can be used as
     a decorator for populating table as a command table'''
 
     def cmd(name, options=(), synopsis=None):
         def decorator(func):
             if synopsis:
                 table[name] = func, list(options), synopsis
             else:
                 table[name] = func, list(options)
             return func
         return decorator
 
     return cmd

tests/test-log.t

@@ -1,1273 +1,1299
 The g is crafted to have 2 filelog topological heads in a linear
 changeset graph
 
   $ hg init a
   $ cd a
   $ echo a > a
   $ echo f > f
   $ hg ci -Ama -d '1 0'
   adding a
   adding f
 
   $ hg cp a b
   $ hg cp f g
   $ hg ci -mb -d '2 0'
 
   $ mkdir dir
   $ hg mv b dir
   $ echo g >> g
   $ echo f >> f
   $ hg ci -mc -d '3 0'
 
   $ hg mv a b
   $ hg cp -f f g
   $ echo a > d
   $ hg add d
   $ hg ci -md -d '4 0'
 
   $ hg mv dir/b e
   $ hg ci -me -d '5 0'
 
   $ hg log a
   changeset:   0:9161b9aeaf16
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     a
   
+log on directory
+
+  $ hg log dir
+  changeset:   4:7e4639b4691b
+  tag:         tip
+  user:        test
+  date:        Thu Jan 01 00:00:05 1970 +0000
+  summary:     e
+  
+  changeset:   2:f8954cd4dc1f
+  user:        test
+  date:        Thu Jan 01 00:00:03 1970 +0000
+  summary:     c
+  
+  $ hg log somethingthatdoesntexist dir
+  changeset:   4:7e4639b4691b
+  tag:         tip
+  user:        test
+  date:        Thu Jan 01 00:00:05 1970 +0000
+  summary:     e
+  
+  changeset:   2:f8954cd4dc1f
+  user:        test
+  date:        Thu Jan 01 00:00:03 1970 +0000
+  summary:     c
+  
 
 -f, directory
 
   $ hg log -f dir
   abort: cannot follow file not in parent revision: "dir"
   [255]
 
 -f, but no args
 
   $ hg log -f
   changeset:   4:7e4639b4691b
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:05 1970 +0000
   summary:     e
   
   changeset:   3:2ca5ba701980
   user:        test
   date:        Thu Jan 01 00:00:04 1970 +0000
   summary:     d
   
   changeset:   2:f8954cd4dc1f
   user:        test
   date:        Thu Jan 01 00:00:03 1970 +0000
   summary:     c
   
   changeset:   1:d89b0a12d229
   user:        test
   date:        Thu Jan 01 00:00:02 1970 +0000
   summary:     b
   
   changeset:   0:9161b9aeaf16
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     a
   
 
 one rename
 
   $ hg up -q 2
   $ hg log -vf a
   changeset:   0:9161b9aeaf16
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   files:       a f
   description:
   a
   
   
 
 many renames
 
   $ hg up -q tip
   $ hg log -vf e
   changeset:   4:7e4639b4691b
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:05 1970 +0000
   files:       dir/b e
   description:
   e
   
   
   changeset:   2:f8954cd4dc1f
   user:        test
   date:        Thu Jan 01 00:00:03 1970 +0000
   files:       b dir/b f g
   description:
   c
   
   
   changeset:   1:d89b0a12d229
   user:        test
   date:        Thu Jan 01 00:00:02 1970 +0000
   files:       b g
   description:
   b
   
   
   changeset:   0:9161b9aeaf16
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   files:       a f
   description:
   a
   
   
 
 
 log -pf dir/b
 
   $ hg up -q 3
   $ hg log -pf dir/b
   changeset:   2:f8954cd4dc1f
   user:        test
   date:        Thu Jan 01 00:00:03 1970 +0000
   summary:     c
   
   diff -r d89b0a12d229 -r f8954cd4dc1f dir/b
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/dir/b	Thu Jan 01 00:00:03 1970 +0000
   @@ -0,0 +1,1 @@
   +a
   
   changeset:   1:d89b0a12d229
   user:        test
   date:        Thu Jan 01 00:00:02 1970 +0000
   summary:     b
   
   diff -r 9161b9aeaf16 -r d89b0a12d229 b
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/b	Thu Jan 01 00:00:02 1970 +0000
   @@ -0,0 +1,1 @@
   +a
   
   changeset:   0:9161b9aeaf16
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     a
   
   diff -r 000000000000 -r 9161b9aeaf16 a
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:01 1970 +0000
   @@ -0,0 +1,1 @@
   +a
   
 
 log -vf dir/b
 
   $ hg log -vf dir/b
   changeset:   2:f8954cd4dc1f
   user:        test
   date:        Thu Jan 01 00:00:03 1970 +0000
   files:       b dir/b f g
   description:
   c
   
   
   changeset:   1:d89b0a12d229
   user:        test
   date:        Thu Jan 01 00:00:02 1970 +0000
   files:       b g
   description:
   b
   
   
   changeset:   0:9161b9aeaf16
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   files:       a f
   description:
   a
   
   
 
 
 -f and multiple filelog heads
 
   $ hg up -q 2
   $ hg log -f g --template '{rev}\n'
   2
   1
   0
   $ hg up -q tip
   $ hg log -f g --template '{rev}\n'
   3
   2
   0
 
 
 log copies with --copies
 
   $ hg log -vC --template '{rev} {file_copies}\n'
   4 e (dir/b)
   3 b (a)g (f)
   2 dir/b (b)
   1 b (a)g (f)
   0 
 
 log copies switch without --copies, with old filecopy template
 
   $ hg log -v --template '{rev} {file_copies_switch%filecopy}\n'
   4 
   3 
   2 
   1 
   0 
 
 log copies switch with --copies
 
   $ hg log -vC --template '{rev} {file_copies_switch}\n'
   4 e (dir/b)
   3 b (a)g (f)
   2 dir/b (b)
   1 b (a)g (f)
   0 
 
 
 log copies with hardcoded style and with --style=default
 
   $ hg log -vC -r4
   changeset:   4:7e4639b4691b
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:05 1970 +0000
   files:       dir/b e
   copies:      e (dir/b)
   description:
   e
   
   
   $ hg log -vC -r4 --style=default
   changeset:   4:7e4639b4691b
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:05 1970 +0000
   files:       dir/b e
   copies:      e (dir/b)
   description:
   e
   
   
 
 
 log copies, non-linear manifest
 
   $ hg up -C 3
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg mv dir/b e
   $ echo foo > foo
   $ hg ci -Ame2 -d '6 0'
   adding foo
   created new head
   $ hg log -v --template '{rev} {file_copies}\n' -r 5
   5 e (dir/b)
 
 
 log copies, execute bit set
 
 #if execbit
   $ chmod +x e
   $ hg ci -me3 -d '7 0'
   $ hg log -v --template '{rev} {file_copies}\n' -r 6
   6 
 #endif
 
 
 log -p d
 
   $ hg log -pv d
   changeset:   3:2ca5ba701980
   user:        test
   date:        Thu Jan 01 00:00:04 1970 +0000
   files:       a b d g
   description:
   d
   
   
   diff -r f8954cd4dc1f -r 2ca5ba701980 d
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/d	Thu Jan 01 00:00:04 1970 +0000
   @@ -0,0 +1,1 @@
   +a
   
 
 
 log --removed file
 
   $ hg log --removed -v a
   changeset:   3:2ca5ba701980
   user:        test
   date:        Thu Jan 01 00:00:04 1970 +0000
   files:       a b d g
   description:
   d
   
   
   changeset:   0:9161b9aeaf16
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   files:       a f
   description:
   a
   
   
 
 log --removed revrange file
 
   $ hg log --removed -v -r0:2 a
   changeset:   0:9161b9aeaf16
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   files:       a f
   description:
   a
   
   
   $ cd ..
 
 log --follow tests
 
   $ hg init follow
   $ cd follow
 
   $ echo base > base
   $ hg ci -Ambase -d '1 0'
   adding base
 
   $ echo r1 >> base
   $ hg ci -Amr1 -d '1 0'
   $ echo r2 >> base
   $ hg ci -Amr2 -d '1 0'
 
   $ hg up -C 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo b1 > b1
   $ hg ci -Amb1 -d '1 0'
   adding b1
   created new head
 
 
 log -f
 
   $ hg log -f
   changeset:   3:e62f78d544b4
   tag:         tip
   parent:      1:3d5bf5654eda
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b1
   
   changeset:   1:3d5bf5654eda
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     r1
   
   changeset:   0:67e992f2c4f3
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     base
   
 
 
 log -f -r 1:tip
 
   $ hg up -C 0
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo b2 > b2
   $ hg ci -Amb2 -d '1 0'
   adding b2
   created new head
   $ hg log -f -r 1:tip
   changeset:   1:3d5bf5654eda
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     r1
   
   changeset:   2:60c670bf5b30
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     r2
   
   changeset:   3:e62f78d544b4
   parent:      1:3d5bf5654eda
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b1
   
 
 
 log -r .  with two parents
 
   $ hg up -C 3
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg merge tip
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg log -r .
   changeset:   3:e62f78d544b4
   parent:      1:3d5bf5654eda
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b1
   
 
 
 log -r .  with one parent
 
   $ hg ci -mm12 -d '1 0'
   $ hg log -r .
   changeset:   5:302e9dd6890d
   tag:         tip
   parent:      3:e62f78d544b4
   parent:      4:ddb82e70d1a1
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     m12
   
 
   $ echo postm >> b1
   $ hg ci -Amb1.1 -d'1 0'
 
 
 log --follow-first
 
   $ hg log --follow-first
   changeset:   6:2404bbcab562
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b1.1
   
   changeset:   5:302e9dd6890d
   parent:      3:e62f78d544b4
   parent:      4:ddb82e70d1a1
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     m12
   
   changeset:   3:e62f78d544b4
   parent:      1:3d5bf5654eda
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b1
   
   changeset:   1:3d5bf5654eda
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     r1
   
   changeset:   0:67e992f2c4f3
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     base
   
 
 
 log -P 2
 
   $ hg log -P 2
   changeset:   6:2404bbcab562
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b1.1
   
   changeset:   5:302e9dd6890d
   parent:      3:e62f78d544b4
   parent:      4:ddb82e70d1a1
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     m12
   
   changeset:   4:ddb82e70d1a1
   parent:      0:67e992f2c4f3
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b2
   
   changeset:   3:e62f78d544b4
   parent:      1:3d5bf5654eda
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b1
   
 
 
 log -r tip -p --git
 
   $ hg log -r tip -p --git
   changeset:   6:2404bbcab562
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b1.1
   
   diff --git a/b1 b/b1
   --- a/b1
   +++ b/b1
   @@ -1,1 +1,2 @@
    b1
   +postm
   
 
 
 log -r ""
 
   $ hg log -r ''
   hg: parse error: empty query
   [255]
 
 log -r <some unknown node id>
 
   $ hg log -r 1000000000000000000000000000000000000000
   abort: unknown revision '1000000000000000000000000000000000000000'!
   [255]
 
 log -k r1
 
   $ hg log -k r1
   changeset:   1:3d5bf5654eda
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     r1
   
 log -p -l2 --color=always
 
   $ hg --config extensions.color= --config color.mode=ansi \
   >  log -p -l2 --color=always
   \x1b[0;33mchangeset:   6:2404bbcab562\x1b[0m (esc)
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b1.1
   
   \x1b[0;1mdiff -r 302e9dd6890d -r 2404bbcab562 b1\x1b[0m (esc)
   \x1b[0;31;1m--- a/b1	Thu Jan 01 00:00:01 1970 +0000\x1b[0m (esc)
   \x1b[0;32;1m+++ b/b1	Thu Jan 01 00:00:01 1970 +0000\x1b[0m (esc)
   \x1b[0;35m@@ -1,1 +1,2 @@\x1b[0m (esc)
    b1
   \x1b[0;32m+postm\x1b[0m (esc)
   
   \x1b[0;33mchangeset:   5:302e9dd6890d\x1b[0m (esc)
   parent:      3:e62f78d544b4
   parent:      4:ddb82e70d1a1
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     m12
   
   \x1b[0;1mdiff -r e62f78d544b4 -r 302e9dd6890d b2\x1b[0m (esc)
   \x1b[0;31;1m--- /dev/null	Thu Jan 01 00:00:00 1970 +0000\x1b[0m (esc)
   \x1b[0;32;1m+++ b/b2	Thu Jan 01 00:00:01 1970 +0000\x1b[0m (esc)
   \x1b[0;35m@@ -0,0 +1,1 @@\x1b[0m (esc)
   \x1b[0;32m+b2\x1b[0m (esc)
   
 
 
 log -r tip --stat
 
   $ hg log -r tip --stat
   changeset:   6:2404bbcab562
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:01 1970 +0000
   summary:     b1.1
   
    b1 |  1 +
    1 files changed, 1 insertions(+), 0 deletions(-)
   
 
   $ cd ..
 
 
 User
 
   $ hg init usertest
   $ cd usertest
 
   $ echo a > a
   $ hg ci -A -m "a" -u "User One <[e-mail]>"
   adding a
   $ echo b > b
   $ hg ci -A -m "b" -u "User Two <[e-mail]>"
   adding b
 
   $ hg log -u "User One <[e-mail]>"
   changeset:   0:29a4c94f1924
   user:        User One <[e-mail]>
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     a
   
   $ hg log -u "user1" -u "user2"
   changeset:   1:e834b5e69c0e
   tag:         tip
   user:        User Two <[e-mail]>
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     b
   
   changeset:   0:29a4c94f1924
   user:        User One <[e-mail]>
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     a
   
   $ hg log -u "user3"
 
   $ cd ..
 
   $ hg init branches
   $ cd branches
 
   $ echo a > a
   $ hg ci -A -m "commit on default"
   adding a
   $ hg branch test
   marked working directory as branch test
   (branches are permanent and global, did you want a bookmark?)
   $ echo b > b
   $ hg ci -A -m "commit on test"
   adding b
 
   $ hg up default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo c > c
   $ hg ci -A -m "commit on default"
   adding c
   $ hg up test
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo c > c
   $ hg ci -A -m "commit on test"
   adding c
 
 
 log -b default
 
   $ hg log -b default
   changeset:   2:c3a4f03cc9a7
   parent:      0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
   changeset:   0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
 
 
 log -b test
 
   $ hg log -b test
   changeset:   3:f5d8de11c2e2
   branch:      test
   tag:         tip
   parent:      1:d32277701ccb
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
   changeset:   1:d32277701ccb
   branch:      test
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
 
 
 log -b dummy
 
   $ hg log -b dummy
   abort: unknown revision 'dummy'!
   [255]
 
 
 log -b .
 
   $ hg log -b .
   changeset:   3:f5d8de11c2e2
   branch:      test
   tag:         tip
   parent:      1:d32277701ccb
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
   changeset:   1:d32277701ccb
   branch:      test
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
 
 
 log -b default -b test
 
   $ hg log -b default -b test
   changeset:   3:f5d8de11c2e2
   branch:      test
   tag:         tip
   parent:      1:d32277701ccb
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
   changeset:   2:c3a4f03cc9a7
   parent:      0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
   changeset:   1:d32277701ccb
   branch:      test
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
   changeset:   0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
 
 
 log -b default -b .
 
   $ hg log -b default -b .
   changeset:   3:f5d8de11c2e2
   branch:      test
   tag:         tip
   parent:      1:d32277701ccb
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
   changeset:   2:c3a4f03cc9a7
   parent:      0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
   changeset:   1:d32277701ccb
   branch:      test
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
   changeset:   0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
 
 
 log -b . -b test
 
   $ hg log -b . -b test
   changeset:   3:f5d8de11c2e2
   branch:      test
   tag:         tip
   parent:      1:d32277701ccb
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
   changeset:   1:d32277701ccb
   branch:      test
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
 
 
 log -b 2
 
   $ hg log -b 2
   changeset:   2:c3a4f03cc9a7
   parent:      0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
   changeset:   0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
 
 
 log -p --cwd dir (in subdir)
 
   $ mkdir dir
   $ hg log -p --cwd dir
   changeset:   3:f5d8de11c2e2
   branch:      test
   tag:         tip
   parent:      1:d32277701ccb
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
   diff -r d32277701ccb -r f5d8de11c2e2 c
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/c	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +c
   
   changeset:   2:c3a4f03cc9a7
   parent:      0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
   diff -r 24427303d56f -r c3a4f03cc9a7 c
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/c	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +c
   
   changeset:   1:d32277701ccb
   branch:      test
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on test
   
   diff -r 24427303d56f -r d32277701ccb b
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/b	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +b
   
   changeset:   0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
   diff -r 000000000000 -r 24427303d56f a
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +a
   
 
 
 log -p -R repo
 
   $ cd dir
   $ hg log -p -R .. ../a
   changeset:   0:24427303d56f
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit on default
   
   diff -r 000000000000 -r 24427303d56f a
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +a
   
 
   $ cd ../..
 
   $ hg init follow2
   $ cd follow2
 
 # Build the following history:
 # tip - o - x - o - x - x
 #    \                 /
 #     o - o - o - x
 #      \     /
 #         o
 #
 # Where "o" is a revision containing "foo" and
 # "x" is a revision without "foo"
 
   $ touch init
   $ hg ci -A -m "init, unrelated"
   adding init
   $ echo 'foo' > init
   $ hg ci -m "change, unrelated"
   $ echo 'foo' > foo
   $ hg ci -A -m "add unrelated old foo"
   adding foo
   $ hg rm foo
   $ hg ci -m "delete foo, unrelated"
   $ echo 'related' > foo
   $ hg ci -A -m "add foo, related"
   adding foo
 
   $ hg up 0
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ touch branch
   $ hg ci -A -m "first branch, unrelated"
   adding branch
   created new head
   $ touch foo
   $ hg ci -A -m "create foo, related"
   adding foo
   $ echo 'change' > foo
   $ hg ci -m "change foo, related"
 
   $ hg up 6
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo 'change foo in branch' > foo
   $ hg ci -m "change foo in branch, related"
   created new head
   $ hg merge 7
   merging foo
   warning: conflicts during merge.
   merging foo incomplete! (edit conflicts, then use 'hg resolve --mark')
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
   [1]
   $ echo 'merge 1' > foo
   $ hg resolve -m foo
   $ hg ci -m "First merge, related"
 
   $ hg merge 4
   merging foo
   warning: conflicts during merge.
   merging foo incomplete! (edit conflicts, then use 'hg resolve --mark')
   1 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
   [1]
   $ echo 'merge 2' > foo
   $ hg resolve -m foo
   $ hg ci -m "Last merge, related"
 
   $ hg log --graph
   @    changeset:   10:4dae8563d2c5
   |\   tag:         tip
   | |  parent:      9:7b35701b003e
   | |  parent:      4:88176d361b69
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     Last merge, related
   | |
   | o    changeset:   9:7b35701b003e
   | |\   parent:      8:e5416ad8a855
   | | |  parent:      7:87fe3144dcfa
   | | |  user:        test
   | | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | | |  summary:     First merge, related
   | | |
   | | o  changeset:   8:e5416ad8a855
   | | |  parent:      6:dc6c325fe5ee
   | | |  user:        test
   | | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | | |  summary:     change foo in branch, related
   | | |
   | o |  changeset:   7:87fe3144dcfa
   | |/   user:        test
   | |    date:        Thu Jan 01 00:00:00 1970 +0000
   | |    summary:     change foo, related
   | |
   | o  changeset:   6:dc6c325fe5ee
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     create foo, related
   | |
   | o  changeset:   5:73db34516eb9
   | |  parent:      0:e87515fd044a
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     first branch, unrelated
   | |
   o |  changeset:   4:88176d361b69
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     add foo, related
   | |
   o |  changeset:   3:dd78ae4afb56
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     delete foo, unrelated
   | |
   o |  changeset:   2:c4c64aedf0f7
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     add unrelated old foo
   | |
   o |  changeset:   1:e5faa7440653
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     change, unrelated
   |
   o  changeset:   0:e87515fd044a
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     init, unrelated
   
 
   $ hg --traceback log -f foo
   changeset:   10:4dae8563d2c5
   tag:         tip
   parent:      9:7b35701b003e
   parent:      4:88176d361b69
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     Last merge, related
   
   changeset:   9:7b35701b003e
   parent:      8:e5416ad8a855
   parent:      7:87fe3144dcfa
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     First merge, related
   
   changeset:   8:e5416ad8a855
   parent:      6:dc6c325fe5ee
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     change foo in branch, related
   
   changeset:   7:87fe3144dcfa
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     change foo, related
   
   changeset:   6:dc6c325fe5ee
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     create foo, related
   
   changeset:   4:88176d361b69
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     add foo, related
   
 
 Also check when maxrev < lastrevfilelog
 
   $ hg --traceback log -f -r4 foo
   changeset:   4:88176d361b69
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     add foo, related
   
   $ cd ..
 
 Issue2383: hg log showing _less_ differences than hg diff
 
   $ hg init issue2383
   $ cd issue2383
 
 Create a test repo:
 
   $ echo a > a
   $ hg ci -Am0
   adding a
   $ echo b > b
   $ hg ci -Am1
   adding b
   $ hg co 0
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo b > a
   $ hg ci -m2
   created new head
 
 Merge:
 
   $ hg merge
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 
 Make sure there's a file listed in the merge to trigger the bug:
 
   $ echo c > a
   $ hg ci -m3
 
 Two files shown here in diff:
 
   $ hg diff --rev 2:3
   diff -r b09be438c43a -r 8e07aafe1edc a
   --- a/a	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -b
   +c
   diff -r b09be438c43a -r 8e07aafe1edc b
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/b	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +b
 
 Diff here should be the same:
 
   $ hg log -vpr 3
   changeset:   3:8e07aafe1edc
   tag:         tip
   parent:      2:b09be438c43a
   parent:      1:925d80f479bb
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   files:       a
   description:
   3
   
   
   diff -r b09be438c43a -r 8e07aafe1edc a
   --- a/a	Thu Jan 01 00:00:00 1970 +0000
   +++ b/a	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
   -b
   +c
   diff -r b09be438c43a -r 8e07aafe1edc b
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/b	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +b
   
   $ cd ..
 
 'hg log -r rev fn' when last(filelog(fn)) != rev
 
   $ hg init simplelog
   $ cd simplelog
   $ echo f > a
   $ hg ci -Am'a' -d '0 0'
   adding a
   $ echo f >> a
   $ hg ci -Am'a bis' -d '1 0'
 
   $ hg log -r0 a
   changeset:   0:9f758d63dcde
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     a
   
 enable obsolete to test hidden feature
 
   $ cat > ${TESTTMP}/obs.py << EOF
   > import mercurial.obsolete
   > mercurial.obsolete._enabled = True
   > EOF
   $ echo '[extensions]' >> $HGRCPATH
   $ echo "obs=${TESTTMP}/obs.py" >> $HGRCPATH
 
   $ hg log --template='{rev}:{node}\n'
   1:a765632148dc55d38c35c4f247c618701886cb2f
   0:9f758d63dcde62d547ebfb08e1e7ee96535f2b05
   $ hg debugobsolete a765632148dc55d38c35c4f247c618701886cb2f
   $ hg up null -q
   $ hg log --template='{rev}:{node}\n'
   0:9f758d63dcde62d547ebfb08e1e7ee96535f2b05
   $ hg log --template='{rev}:{node}\n' --hidden
   1:a765632148dc55d38c35c4f247c618701886cb2f
   0:9f758d63dcde62d547ebfb08e1e7ee96535f2b05
 
 test that parent prevent a changeset to be hidden
 
   $ hg up 1 -q --hidden
   $ hg log --template='{rev}:{node}\n'
   1:a765632148dc55d38c35c4f247c618701886cb2f
   0:9f758d63dcde62d547ebfb08e1e7ee96535f2b05
 
 test that second parent prevent a changeset to be hidden too
 
   $ hg debugsetparents 0 1 # nothing suitable to merge here
   $ hg log --template='{rev}:{node}\n'
   1:a765632148dc55d38c35c4f247c618701886cb2f
   0:9f758d63dcde62d547ebfb08e1e7ee96535f2b05
 
 clear extensions configuration
   $ echo '[extensions]' >> $HGRCPATH
   $ echo "obs=!" >> $HGRCPATH
   $ cd ..
 
 test -u/-k for problematic encoding
 # unicode: cp932:
 # u30A2    0x83 0x41(= 'A')
 # u30C2    0x83 0x61(= 'a')
 
   $ hg init problematicencoding
   $ cd problematicencoding
 
   $ python > setup.sh <<EOF
   > print u'''
   > echo a > text
   > hg add text
   > hg --encoding utf-8 commit -u '\u30A2' -m none
   > echo b > text
   > hg --encoding utf-8 commit -u '\u30C2' -m none
   > echo c > text
   > hg --encoding utf-8 commit -u none -m '\u30A2'
   > echo d > text
   > hg --encoding utf-8 commit -u none -m '\u30C2'
   > '''.encode('utf-8')
   > EOF
   $ sh < setup.sh
 
 test in problematic encoding
   $ python > test.sh <<EOF
   > print u'''
   > hg --encoding cp932 log --template '{rev}\\n' -u '\u30A2'
   > echo ====
   > hg --encoding cp932 log --template '{rev}\\n' -u '\u30C2'
   > echo ====
   > hg --encoding cp932 log --template '{rev}\\n' -k '\u30A2'
   > echo ====
   > hg --encoding cp932 log --template '{rev}\\n' -k '\u30C2'
   > '''.encode('cp932')
   > EOF
   $ sh < test.sh
   0
   ====
   1
   ====
   2
   0
   ====
   3
   1
 
   $ cd ..
 
 test hg log on non-existent files and on directories
   $ hg init issue1340
   $ cd issue1340
   $ mkdir d1; mkdir D2; mkdir D3.i; mkdir d4.hg; mkdir d5.d; mkdir .d6
   $ echo 1 > d1/f1
   $ echo 1 > D2/f1
   $ echo 1 > D3.i/f1
   $ echo 1 > d4.hg/f1
   $ echo 1 > d5.d/f1
   $ echo 1 > .d6/f1
   $ hg -q add .
   $ hg commit -m "a bunch of weird directories"
   $ hg log -l1 d1/f1 | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 f1
   $ hg log -l1 . | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 ./ | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 d1 | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 D2 | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 D2/f1 | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 D3.i | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 D3.i/f1 | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 d4.hg | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 d4.hg/f1 | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 d5.d | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 d5.d/f1 | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 .d6 | grep changeset
   changeset:   0:65624cd9070a
   $ hg log -l1 .d6/f1 | grep changeset
   changeset:   0:65624cd9070a
   $ cd ..