rename: do not overwrite existing broken symlinks

mercurial/cmdutil.py

@@ -1,1250 +1,1250 b''
 # 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, glob, tempfile
 import util, templater, patch, error, encoding, templatekw
 import match as _match
 import similar, revset
 
 revrangesep = ':'
 
 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 = {}
     for e in table.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 bail_if_changed(repo):
     if repo.dirstate.parents()[1] != 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"))
 
 def logmessage(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 = sys.stdin.read()
             else:
                 message = open(logfile).read()
         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 revpair(repo, revs):
     '''return pair of nodes, given list of revisions. second item can
     be None, meaning use working dir.'''
 
     def revfix(repo, val, defval):
         if not val and val != 0 and defval is not None:
             val = defval
         return repo.lookup(val)
 
     if not revs:
         return repo.dirstate.parents()[0], None
     end = None
     if len(revs) == 1:
         if revrangesep in revs[0]:
             start, end = revs[0].split(revrangesep, 1)
             start = revfix(repo, start, 0)
             end = revfix(repo, end, len(repo) - 1)
         else:
             start = revfix(repo, revs[0], None)
     elif len(revs) == 2:
         if revrangesep in revs[0] or revrangesep in revs[1]:
             raise util.Abort(_('too many revisions specified'))
         start = revfix(repo, revs[0], None)
         end = revfix(repo, revs[1], None)
     else:
         raise util.Abort(_('too many revisions specified'))
     return start, end
 
 def revrange(repo, revs):
     """Yield revision as strings from a list of revision specifications."""
 
     def revfix(repo, val, defval):
         if not val and val != 0 and defval is not None:
             return defval
         return repo.changelog.rev(repo.lookup(val))
 
     seen, l = set(), []
     for spec in revs:
         # attempt to parse old-style ranges first to deal with
         # things like old-tag which contain query metacharacters
         try:
             if revrangesep in spec:
                 start, end = spec.split(revrangesep, 1)
                 start = revfix(repo, start, 0)
                 end = revfix(repo, end, len(repo) - 1)
                 step = start > end and -1 or 1
                 for rev in xrange(start, end + step, step):
                     if rev in seen:
                         continue
                     seen.add(rev)
                     l.append(rev)
                 continue
             elif spec and spec in repo: # single unquoted rev
                 rev = revfix(repo, spec, None)
                 if rev in seen:
                     continue
                 seen.add(rev)
                 l.append(rev)
                 continue
         except error.RepoLookupError:
             pass
 
         # fall through to new-style queries if old-style fails
         m = revset.match(spec)
         for r in m(repo, range(len(repo))):
             if r not in seen:
                 l.append(r)
         seen.update(l)
 
     return l
 
 def make_filename(repo, pat, node,
                   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),
         }
     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 make_file(repo, pat, node=None,
               total=None, seqno=None, revwidth=None, mode='wb', pathname=None):
 
     writable = 'w' in mode or 'a' in mode
 
     if not pat or pat == '-':
         return writable and sys.stdout or sys.stdin
     if hasattr(pat, 'write') and writable:
         return pat
     if hasattr(pat, 'read') and 'r' in mode:
         return pat
     return open(make_filename(repo, pat, node, total, seqno, revwidth,
                               pathname),
                 mode)
 
 def expandpats(pats):
     if not util.expandglobs:
         return list(pats)
     ret = []
     for p in pats:
         kind, name = _match._patsplit(p, None)
         if kind is None:
             try:
                 globbed = glob.glob(name)
             except re.error:
                 globbed = [name]
             if globbed:
                 ret.extend(globbed)
                 continue
         ret.append(p)
     return ret
 
 def match(repo, pats=[], opts={}, globbed=False, default='relpath'):
     if not globbed and default == 'relpath':
         pats = expandpats(pats or [])
     m = _match.match(repo.root, repo.getcwd(), pats,
                     opts.get('include'), opts.get('exclude'), default)
     def badfn(f, msg):
         repo.ui.warn("%s: %s\n" % (m.rel(f), msg))
     m.bad = badfn
     return m
 
 def matchall(repo):
     return _match.always(repo.root, repo.getcwd())
 
 def matchfiles(repo, files):
     return _match.exact(repo.root, repo.getcwd(), files)
 
 def addremove(repo, pats=[], opts={}, dry_run=None, similarity=None):
     if dry_run is None:
         dry_run = opts.get('dry_run')
     if similarity is None:
         similarity = float(opts.get('similarity') or 0)
     # we'd use status here, except handling of symlinks and ignore is tricky
     added, unknown, deleted, removed = [], [], [], []
     audit_path = util.path_auditor(repo.root)
     m = match(repo, pats, opts)
     for abs in repo.walk(m):
         target = repo.wjoin(abs)
         good = True
         try:
             audit_path(abs)
         except:
             good = False
         rel = m.rel(abs)
         exact = m.exact(abs)
         if good and abs not in repo.dirstate:
             unknown.append(abs)
             if repo.ui.verbose or not exact:
                 repo.ui.status(_('adding %s\n') % ((pats and rel) or abs))
         elif repo.dirstate[abs] != 'r' and (not good or not util.lexists(target)
             or (os.path.isdir(target) and not os.path.islink(target))):
             deleted.append(abs)
             if repo.ui.verbose or not exact:
                 repo.ui.status(_('removing %s\n') % ((pats and rel) or abs))
         # for finding renames
         elif repo.dirstate[abs] == 'r':
             removed.append(abs)
         elif repo.dirstate[abs] == 'a':
             added.append(abs)
     copies = {}
     if similarity > 0:
         for old, new, score in similar.findrenames(repo,
                 added + unknown, removed + deleted, similarity):
             if repo.ui.verbose or not m.exact(old) or not m.exact(new):
                 repo.ui.status(_('recording removal of %s as rename to %s '
                                  '(%d%% similar)\n') %
                                (m.rel(old), m.rel(new), score * 100))
             copies[new] = old
 
     if not dry_run:
         wctx = repo[None]
         wlock = repo.wlock()
         try:
             wctx.remove(deleted)
             wctx.add(unknown)
             for new, old in copies.iteritems():
                 wctx.copy(old, new)
         finally:
             wlock.release()
 
 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 = match(repo, [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 = util.canonpath(repo.root, cwd, otarget)
         reltarget = repo.pathto(abstarget, cwd)
         target = repo.wjoin(abstarget)
         src = repo.wjoin(abssrc)
         state = repo.dirstate[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.exists(target)
+        exists = os.path.lexists(target)
         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)
                 util.copyfile(src, target)
             except IOError, inst:
                 if inst.errno == errno.ENOENT:
                     ui.warn(_('%s: deleted in working copy\n') % relsrc)
                 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
         origsrc = repo.dirstate.copied(abssrc) or abssrc
         if abstarget == origsrc: # copying back a copy?
             if state not in 'mn' and not dryrun:
                 repo.dirstate.normallookup(abstarget)
         else:
             if repo.dirstate[origsrc] == 'a' and origsrc == abssrc:
                 if not ui.quiet:
                     ui.warn(_("%s has not been committed yet, so no copy "
                               "data will be stored for %s.\n")
                             % (repo.pathto(origsrc, cwd), reltarget))
                 if repo.dirstate[abstarget] in '?r' and not dryrun:
                     wctx.add([abstarget])
             elif not dryrun:
                 wctx.copy(origsrc, abstarget)
 
         if rename and not dryrun:
             wctx.remove([abssrc], not after)
 
     # 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 = util.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 _match.patkind(pat):
             # a mercurial pattern
             res = lambda p: os.path.join(dest,
                                          os.path.basename(util.localpath(p)))
         else:
             abspfx = util.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.exists(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 = 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 _match.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(util.nulldev, 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
 
         if not fp:
             fp = make_file(repo, template, node, total=total, seqno=seqno,
                            revwidth=revwidth, mode='ab')
         if fp != sys.stdout and hasattr(fp, 'name'):
             repo.ui.note("%s\n" % fp.name)
 
         fp.write("# HG changeset patch\n")
         fp.write("# User %s\n" % ctx.user())
         fp.write("# Date %d %d\n" % ctx.date())
         if branch and (branch != 'default'):
             fp.write("# Branch %s\n" % branch)
         fp.write("# Node ID %s\n" % hex(node))
         fp.write("# Parent  %s\n" % hex(prev))
         if len(parents) > 1:
             fp.write("# Parent  %s\n" % hex(parents[1]))
         fp.write(ctx.description().rstrip())
         fp.write("\n\n")
 
         for chunk in patch.diff(repo, prev, node, opts=opts):
             fp.write(chunk)
 
     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):
     '''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 = util.termwidth()
         chunks = patch.diff(repo, node1, node2, match, changes, diffopts)
         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):
             write(chunk, label=label)
 
 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)]
 
         self.ui.write(_("changeset:   %d:%s\n") % (rev, hexfunc(changenode)),
                       label='log.changeset')
 
         branch = ctx.branch()
         # don't show the default branch name
         if branch != 'default':
             branch = encoding.tolocal(branch)
             self.ui.write(_("branch:      %s\n") % branch,
                           label='log.branch')
         for tag in self.repo.nodetags(changenode):
             self.ui.write(_("tag:         %s\n") % tag,
                           label='log.tag')
         for parent in parents:
             self.ui.write(_("parent:      %d:%s\n") % parent,
                           label='log.parent')
 
         if self.ui.debugflag:
             mnode = ctx.manifestnode()
             self.ui.write(_("manifest:    %d:%s\n") %
                           (self.repo.manifest.rev(mnode), hex(mnode)),
                           label='ui.debug log.manifest')
         self.ui.write(_("user:        %s\n") % ctx.user(),
                       label='log.user')
         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([_("files:"), _("files+:"), _("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:
             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]
             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()):
                 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:
                 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 = 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:
             tmpl = templater.parsestring(tmpl)
         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 = 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 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.'''
 
     def increasing_windows(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
 
     follow = opts.get('follow') or opts.get('follow_first')
 
     if not len(repo):
         return []
 
     if follow:
         defrange = '%s:0' % repo['.'].rev()
     else:
         defrange = '-1:0'
     revs = revrange(repo, opts['rev'] or [defrange])
     if not revs:
         return []
     wanted = set()
     slowpath = match.anypats() or (match.files() and opts.get('removed'))
     fncache = {}
     change = util.cachefunc(repo.changectx)
 
     if not slowpath and not match.files():
         # No files, no patterns.  Display all revs.
         wanted = set(revs)
     copies = []
 
     if not slowpath:
         # Only files, no patterns.  Check the history of each file.
         def filerevgen(filelog, node):
             cl_count = len(repo)
             if node is None:
                 last = len(filelog) - 1
             else:
                 last = filelog.rev(node)
             for i, window in increasing_windows(last, nullrev):
                 revs = []
                 for j in xrange(i - window, i + 1):
                     n = filelog.node(j)
                     revs.append((filelog.linkrev(j),
                                  follow and filelog.renamed(n)))
                 for rev in reversed(revs):
                     # only yield rev for which we have the changelog, it can
                     # happen while doing "hg log" during a pull or commit
                     if rev[0] < cl_count:
                         yield rev
         def iterfiles():
             for filename in match.files():
                 yield filename, None
             for filename_node in copies:
                 yield filename_node
         minrev, maxrev = min(revs), max(revs)
         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
             for rev, copied in filerevgen(filelog, node):
                 if rev <= maxrev:
                     if rev < minrev:
                         break
                     fncache.setdefault(rev, [])
                     fncache[rev].append(file_)
                     wanted.add(rev)
                     if copied:
                         copies.append(copied)
     if slowpath:
         if follow:
             raise util.Abort(_('can only follow copies/renames for explicit '
                                'filenames'))
 
         # The slow path checks files modified in every changeset.
         def changerevgen():
             for i, window in increasing_windows(len(repo) - 1, nullrev):
                 for j in xrange(i - window, i + 1):
                     yield change(j)
 
         for ctx in changerevgen():
             matches = filter(match, ctx.files())
             if matches:
                 fncache[ctx.rev()] = matches
                 wanted.add(ctx.rev())
 
     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.changelog.rev(repo.lookup(rev))
         ff = followfilter()
         stop = min(revs[0], revs[-1])
         for x in xrange(rev, stop - 1, -1):
             if ff.match(x):
                 wanted.discard(x)
 
     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 increasing_windows(0, len(revs)):
             change = util.cachefunc(repo.changectx)
             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 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(opts)
 
     # extract addremove carefully -- this function can be called from a command
     # that doesn't support addremove
     if opts.get('addremove'):
         addremove(repo, pats, opts)
 
     return commitfunc(ui, repo, message, match(repo, pats, opts), opts)
 
 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'")
                         % encoding.tolocal(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

tests/test-rename

@@ -1,260 +1,267 b''
 #!/bin/sh
 
 hg init
 mkdir d1 d1/d11 d2
 echo d1/a > d1/a
 echo d1/ba > d1/ba
 echo d1/a1 > d1/d11/a1
 echo d1/b > d1/b
 echo d2/b > d2/b
 hg add d1/a d1/b d1/ba d1/d11/a1 d2/b
 hg commit -m "1" -d "1000000 0"
 
 echo "# rename a single file"
 hg rename d1/d11/a1 d2/c
 hg sum
 hg status -C
 hg update -C
 rm d2/c
 
 echo "# rename --after a single file"
 mv d1/d11/a1 d2/c
 hg rename --after d1/d11/a1 d2/c
 hg status -C
 hg update -C
 rm d2/c
 
 echo '# rename --after a single file when src and tgt already tracked'
 mv d1/d11/a1 d2/c
 hg addrem
 hg rename --after d1/d11/a1 d2/c
 hg status -C
 hg update -C
 rm d2/c
 
 echo "# rename --after a single file to a nonexistant target filename"
 hg rename --after d1/a dummy
 
 echo "# move a single file to an existing directory"
 hg rename d1/d11/a1 d2
 hg status -C
 hg update -C
 rm d2/a1
 
 echo "# move --after a single file to an existing directory"
 mv d1/d11/a1 d2
 hg rename --after d1/d11/a1 d2
 hg status -C
 hg update -C
 rm d2/a1
 
 echo "# rename a file using a relative path"
 (cd d1/d11; hg rename ../../d2/b e)
 hg status -C
 hg update -C
 rm d1/d11/e
 
 echo "# rename --after a file using a relative path"
 (cd d1/d11; mv ../../d2/b e; hg rename --after ../../d2/b e)
 hg status -C
 hg update -C
 rm d1/d11/e
 
 echo "# rename directory d1 as d3"
 hg rename d1/ d3
 hg status -C
 hg update -C
 rm -rf d3
 
 echo "# rename --after directory d1 as d3"
 mv d1 d3
 hg rename --after d1 d3
 hg status -C
 hg update -C
 rm -rf d3
 
 echo "# move a directory using a relative path"
 (cd d2; mkdir d3; hg rename ../d1/d11 d3)
 hg status -C
 hg update -C
 rm -rf d2/d3
 
 echo "# move --after a directory using a relative path"
 (cd d2; mkdir d3; mv ../d1/d11 d3; hg rename --after ../d1/d11 d3)
 hg status -C
 hg update -C
 rm -rf d2/d3
 
 echo "# move directory d1/d11 to an existing directory d2 (removes empty d1)"
 hg rename d1/d11/ d2
 hg status -C
 hg update -C
 rm -rf d2/d11
 
 echo "# move directories d1 and d2 to a new directory d3"
 mkdir d3
 hg rename d1 d2 d3
 hg status -C
 hg update -C
 rm -rf d3
 
 echo "# move --after directories d1 and d2 to a new directory d3"
 mkdir d3
 mv d1 d2 d3
 hg rename --after d1 d2 d3
 hg status -C
 hg update -C
 rm -rf d3
 
 echo "# move everything under directory d1 to existing directory d2, do not"
 echo "# overwrite existing files (d2/b)"
 hg rename d1/* d2
 hg status -C
 diff d1/b d2/b
 hg update -C
 rm d2/a d2/ba d2/d11/a1
 
 echo "# attempt to move one file into a non-existent directory"
 hg rename d1/a dx/
 hg status -C
 hg update -C
 
 echo "# attempt to move potentially more than one file into a non-existent"
 echo "# directory"
 hg rename 'glob:d1/**' dx
 
 echo "# move every file under d1 to d2/d21 (glob)"
 mkdir d2/d21
 hg rename 'glob:d1/**' d2/d21
 hg status -C
 hg update -C
 rm -rf d2/d21
 
 echo "# move --after some files under d1 to d2/d21 (glob)"
 mkdir d2/d21
 mv d1/a d1/d11/a1 d2/d21
 hg rename --after 'glob:d1/**' d2/d21
 hg status -C
 hg update -C
 rm -rf d2/d21
 
 echo "# move every file under d1 starting with an 'a' to d2/d21 (regexp)"
 mkdir d2/d21
 hg rename 're:d1/([^a][^/]*/)*a.*' d2/d21
 hg status -C
 hg update -C
 rm -rf d2/d21
 
 echo "# attempt to overwrite an existing file"
 echo "ca" > d1/ca
 hg rename d1/ba d1/ca
 hg status -C
 hg update -C
 
 echo "# forced overwrite of an existing file"
 echo "ca" > d1/ca
 hg rename --force d1/ba d1/ca
 hg status -C
 hg update -C
 rm d1/ca
 
+echo "# attempt to overwrite an existing broken symlink"
+ln -s ba d1/ca
+hg rename --traceback d1/ba d1/ca
+hg status -C
+hg update -C
+rm d1/ca
+
 echo "# replace a symlink with a file"
 ln -s ba d1/ca
 hg rename --force d1/ba d1/ca
 hg status -C
 hg update -C
 rm d1/ca
 
 echo "# do not copy more than one source file to the same destination file"
 mkdir d3
 hg rename d1/* d2/* d3
 hg status -C
 hg update -C
 rm -rf d3
 
 echo "# move a whole subtree with \"hg rename .\""
 mkdir d3
 (cd d1; hg rename . ../d3)
 hg status -C
 hg update -C
 rm -rf d3
 
 echo "# move a whole subtree with \"hg rename --after .\""
 mkdir d3
 mv d1/* d3
 (cd d1; hg rename --after . ../d3)
 hg status -C
 hg update -C
 rm -rf d3
 
 echo "# move the parent tree with \"hg rename ..\""
 (cd d1/d11; hg rename .. ../../d3)
 hg status -C
 hg update -C
 rm -rf d3
 
 echo "# skip removed files"
 hg remove d1/b
 hg rename d1 d3
 hg status -C
 hg update -C
 rm -rf d3
 
 echo "# transitive rename"
 hg rename d1/b d1/bb
 hg rename d1/bb d1/bc
 hg status -C
 hg update -C
 rm d1/bc
 
 echo "# transitive rename --after"
 hg rename d1/b d1/bb
 mv d1/bb d1/bc
 hg rename --after d1/bb d1/bc
 hg status -C
 hg update -C
 rm d1/bc
 
 echo "# idempotent renames (d1/b -> d1/bb followed by d1/bb -> d1/b)"
 hg rename d1/b d1/bb
 echo "some stuff added to d1/bb" >> d1/bb
 hg rename d1/bb d1/b
 hg status -C
 hg update -C
 
 echo '# overwriting with renames (issue1959)'
 hg rename d1/a d1/c
 hg rename d1/b d1/a
 hg status -C
 hg diff --git
 hg update -C
 
 echo "# check illegal path components"
 
 hg rename d1/d11/a1 .hg/foo
 hg status -C
 hg rename d1/d11/a1 ../foo
 hg status -C
 
 mv d1/d11/a1 .hg/foo
 hg rename --after d1/d11/a1 .hg/foo
 hg status -C
 hg update -C
 rm .hg/foo
 
 hg rename d1/d11/a1 .hg
 hg status -C
 hg rename d1/d11/a1 ..
 hg status -C
 
 mv d1/d11/a1 .hg
 hg rename --after d1/d11/a1 .hg
 hg status -C
 hg update -C
 rm .hg/a1
 
 (cd d1/d11; hg rename ../../d2/b ../../.hg/foo)
 hg status -C
 (cd d1/d11; hg rename ../../d2/b ../../../foo)
 hg status -C
 

tests/test-rename.out

@@ -1,344 +1,348 b''
 # rename a single file
 parent: 0:6f9914c7a010 tip
  1
 branch: default
 commit: 1 renamed
 update: (current)
 A d2/c
   d1/d11/a1
 R d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # rename --after a single file
 A d2/c
   d1/d11/a1
 R d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # rename --after a single file when src and tgt already tracked
 removing d1/d11/a1
 adding d2/c
 A d2/c
   d1/d11/a1
 R d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # rename --after a single file to a nonexistant target filename
 d1/a: not recording move - dummy does not exist
 # move a single file to an existing directory
 A d2/a1
   d1/d11/a1
 R d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move --after a single file to an existing directory
 A d2/a1
   d1/d11/a1
 R d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # rename a file using a relative path
 A d1/d11/e
   d2/b
 R d2/b
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # rename --after a file using a relative path
 A d1/d11/e
   d2/b
 R d2/b
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # rename directory d1 as d3
 moving d1/a to d3/a
 moving d1/b to d3/b
 moving d1/ba to d3/ba
 moving d1/d11/a1 to d3/d11/a1
 A d3/a
   d1/a
 A d3/b
   d1/b
 A d3/ba
   d1/ba
 A d3/d11/a1
   d1/d11/a1
 R d1/a
 R d1/b
 R d1/ba
 R d1/d11/a1
 4 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # rename --after directory d1 as d3
 moving d1/a to d3/a
 moving d1/b to d3/b
 moving d1/ba to d3/ba
 moving d1/d11/a1 to d3/d11/a1
 A d3/a
   d1/a
 A d3/b
   d1/b
 A d3/ba
   d1/ba
 A d3/d11/a1
   d1/d11/a1
 R d1/a
 R d1/b
 R d1/ba
 R d1/d11/a1
 4 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move a directory using a relative path
 moving ../d1/d11/a1 to d3/d11/a1
 A d2/d3/d11/a1
   d1/d11/a1
 R d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move --after a directory using a relative path
 moving ../d1/d11/a1 to d3/d11/a1
 A d2/d3/d11/a1
   d1/d11/a1
 R d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move directory d1/d11 to an existing directory d2 (removes empty d1)
 moving d1/d11/a1 to d2/d11/a1
 A d2/d11/a1
   d1/d11/a1
 R d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move directories d1 and d2 to a new directory d3
 moving d1/a to d3/d1/a
 moving d1/b to d3/d1/b
 moving d1/ba to d3/d1/ba
 moving d1/d11/a1 to d3/d1/d11/a1
 moving d2/b to d3/d2/b
 A d3/d1/a
   d1/a
 A d3/d1/b
   d1/b
 A d3/d1/ba
   d1/ba
 A d3/d1/d11/a1
   d1/d11/a1
 A d3/d2/b
   d2/b
 R d1/a
 R d1/b
 R d1/ba
 R d1/d11/a1
 R d2/b
 5 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move --after directories d1 and d2 to a new directory d3
 moving d1/a to d3/d1/a
 moving d1/b to d3/d1/b
 moving d1/ba to d3/d1/ba
 moving d1/d11/a1 to d3/d1/d11/a1
 moving d2/b to d3/d2/b
 A d3/d1/a
   d1/a
 A d3/d1/b
   d1/b
 A d3/d1/ba
   d1/ba
 A d3/d1/d11/a1
   d1/d11/a1
 A d3/d2/b
   d2/b
 R d1/a
 R d1/b
 R d1/ba
 R d1/d11/a1
 R d2/b
 5 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move everything under directory d1 to existing directory d2, do not
 # overwrite existing files (d2/b)
 d2/b: not overwriting - file exists
 moving d1/d11/a1 to d2/d11/a1
 A d2/a
   d1/a
 A d2/ba
   d1/ba
 A d2/d11/a1
   d1/d11/a1
 R d1/a
 R d1/ba
 R d1/d11/a1
 1c1
 < d1/b
 ---
 > d2/b
 3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # attempt to move one file into a non-existent directory
 abort: destination dx/ is not a directory
 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # attempt to move potentially more than one file into a non-existent
 # directory
 abort: with multiple sources, destination must be an existing directory
 # move every file under d1 to d2/d21 (glob)
 moving d1/a to d2/d21/a
 moving d1/b to d2/d21/b
 moving d1/ba to d2/d21/ba
 moving d1/d11/a1 to d2/d21/a1
 A d2/d21/a
   d1/a
 A d2/d21/a1
   d1/d11/a1
 A d2/d21/b
   d1/b
 A d2/d21/ba
   d1/ba
 R d1/a
 R d1/b
 R d1/ba
 R d1/d11/a1
 4 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move --after some files under d1 to d2/d21 (glob)
 moving d1/a to d2/d21/a
 d1/b: not recording move - d2/d21/b does not exist
 d1/ba: not recording move - d2/d21/ba does not exist
 moving d1/d11/a1 to d2/d21/a1
 A d2/d21/a
   d1/a
 A d2/d21/a1
   d1/d11/a1
 R d1/a
 R d1/d11/a1
 2 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move every file under d1 starting with an 'a' to d2/d21 (regexp)
 moving d1/a to d2/d21/a
 moving d1/d11/a1 to d2/d21/a1
 A d2/d21/a
   d1/a
 A d2/d21/a1
   d1/d11/a1
 R d1/a
 R d1/d11/a1
 2 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # attempt to overwrite an existing file
 d1/ca: not overwriting - file exists
 ? d1/ca
 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # forced overwrite of an existing file
 A d1/ca
   d1/ba
 R d1/ba
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+# attempt to overwrite an existing broken symlink
+d1/ca: not overwriting - file exists
+? d1/ca
+0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # replace a symlink with a file
 A d1/ca
   d1/ba
 R d1/ba
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # do not copy more than one source file to the same destination file
 moving d1/d11/a1 to d3/d11/a1
 d3/b: not overwriting - d2/b collides with d1/b
 A d3/a
   d1/a
 A d3/b
   d1/b
 A d3/ba
   d1/ba
 A d3/d11/a1
   d1/d11/a1
 R d1/a
 R d1/b
 R d1/ba
 R d1/d11/a1
 4 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move a whole subtree with "hg rename ."
 moving a to ../d3/d1/a
 moving b to ../d3/d1/b
 moving ba to ../d3/d1/ba
 moving d11/a1 to ../d3/d1/d11/a1
 A d3/d1/a
   d1/a
 A d3/d1/b
   d1/b
 A d3/d1/ba
   d1/ba
 A d3/d1/d11/a1
   d1/d11/a1
 R d1/a
 R d1/b
 R d1/ba
 R d1/d11/a1
 4 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move a whole subtree with "hg rename --after ."
 moving a to ../d3/a
 moving b to ../d3/b
 moving ba to ../d3/ba
 moving d11/a1 to ../d3/d11/a1
 A d3/a
   d1/a
 A d3/b
   d1/b
 A d3/ba
   d1/ba
 A d3/d11/a1
   d1/d11/a1
 R d1/a
 R d1/b
 R d1/ba
 R d1/d11/a1
 4 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # move the parent tree with "hg rename .."
 moving ../a to ../../d3/a
 moving ../b to ../../d3/b
 moving ../ba to ../../d3/ba
 moving a1 to ../../d3/d11/a1
 A d3/a
   d1/a
 A d3/b
   d1/b
 A d3/ba
   d1/ba
 A d3/d11/a1
   d1/d11/a1
 R d1/a
 R d1/b
 R d1/ba
 R d1/d11/a1
 4 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # skip removed files
 moving d1/a to d3/a
 moving d1/ba to d3/ba
 moving d1/d11/a1 to d3/d11/a1
 A d3/a
   d1/a
 A d3/ba
   d1/ba
 A d3/d11/a1
   d1/d11/a1
 R d1/a
 R d1/b
 R d1/ba
 R d1/d11/a1
 4 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # transitive rename
 A d1/bc
   d1/b
 R d1/b
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # transitive rename --after
 A d1/bc
   d1/b
 R d1/b
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # idempotent renames (d1/b -> d1/bb followed by d1/bb -> d1/b)
 M d1/b
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # overwriting with renames (issue1959)
 A d1/a
   d1/b
 A d1/c
   d1/a
 R d1/b
 diff --git a/d1/b b/d1/a
 rename from d1/b
 rename to d1/a
 diff --git a/d1/a b/d1/c
 copy from d1/a
 copy to d1/c
 2 files updated, 0 files merged, 1 files removed, 0 files unresolved
 # check illegal path components
 abort: path contains illegal component: .hg/foo
 abort: ../foo not under root
 abort: path contains illegal component: .hg/foo
 ! d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 abort: path contains illegal component: .hg/a1
 abort: ../a1 not under root
 abort: path contains illegal component: .hg/a1
 ! d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 abort: path contains illegal component: .hg/foo
 abort: ../../../foo not under root