mq: add a 'mq()' revset predicate that returns applied mq csets

hgext/mq.py

@@ -1,3300 +1,3314 b''
 # mq.py - patch queues for mercurial
 #
 # Copyright 2005, 2006 Chris Mason <[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.
 
 '''manage a stack of patches
 
 This extension lets you work with a stack of patches in a Mercurial
 repository. It manages two stacks of patches - all known patches, and
 applied patches (subset of known patches).
 
 Known patches are represented as patch files in the .hg/patches
 directory. Applied patches are both patch files and changesets.
 
 Common tasks (use :hg:`help command` for more details)::
 
   create new patch                          qnew
   import existing patch                     qimport
 
   print patch series                        qseries
   print applied patches                     qapplied
 
   add known patch to applied stack          qpush
   remove patch from applied stack           qpop
   refresh contents of top applied patch     qrefresh
 
 By default, mq will automatically use git patches when required to
 avoid losing file mode changes, copy records, binary files or empty
 files creations or deletions. This behaviour can be configured with::
 
   [mq]
   git = auto/keep/yes/no
 
 If set to 'keep', mq will obey the [diff] section configuration while
 preserving existing git patches upon qrefresh. If set to 'yes' or
 'no', mq will override the [diff] section and always generate git or
 regular patches, possibly losing data in the second case.
 
 You will by default be managing a patch queue named "patches". You can
 create other, independent patch queues with the :hg:`qqueue` command.
 '''
 
 from mercurial.i18n import _
 from mercurial.node import bin, hex, short, nullid, nullrev
 from mercurial.lock import release
-from mercurial import commands, cmdutil, hg, patch, scmutil, util
+from mercurial import commands, cmdutil, hg, patch, scmutil, util, revset
 from mercurial import repair, extensions, url, error
 import os, sys, re, errno, shutil
 
 commands.norepo += " qclone"
 
 # Patch names looks like unix-file names.
 # They must be joinable with queue directory and result in the patch path.
 normname = util.normpath
 
 class statusentry(object):
     def __init__(self, node, name):
         self.node, self.name = node, name
     def __repr__(self):
         return hex(self.node) + ':' + self.name
 
 class patchheader(object):
     def __init__(self, pf, plainmode=False):
         def eatdiff(lines):
             while lines:
                 l = lines[-1]
                 if (l.startswith("diff -") or
                     l.startswith("Index:") or
                     l.startswith("===========")):
                     del lines[-1]
                 else:
                     break
         def eatempty(lines):
             while lines:
                 if not lines[-1].strip():
                     del lines[-1]
                 else:
                     break
 
         message = []
         comments = []
         user = None
         date = None
         parent = None
         format = None
         subject = None
         branch = None
         nodeid = None
         diffstart = 0
 
         for line in file(pf):
             line = line.rstrip()
             if (line.startswith('diff --git')
                 or (diffstart and line.startswith('+++ '))):
                 diffstart = 2
                 break
             diffstart = 0 # reset
             if line.startswith("--- "):
                 diffstart = 1
                 continue
             elif format == "hgpatch":
                 # parse values when importing the result of an hg export
                 if line.startswith("# User "):
                     user = line[7:]
                 elif line.startswith("# Date "):
                     date = line[7:]
                 elif line.startswith("# Parent "):
                     parent = line[9:].lstrip()
                 elif line.startswith("# Branch "):
                     branch = line[9:]
                 elif line.startswith("# Node ID "):
                     nodeid = line[10:]
                 elif not line.startswith("# ") and line:
                     message.append(line)
                     format = None
             elif line == '# HG changeset patch':
                 message = []
                 format = "hgpatch"
             elif (format != "tagdone" and (line.startswith("Subject: ") or
                                            line.startswith("subject: "))):
                 subject = line[9:]
                 format = "tag"
             elif (format != "tagdone" and (line.startswith("From: ") or
                                            line.startswith("from: "))):
                 user = line[6:]
                 format = "tag"
             elif (format != "tagdone" and (line.startswith("Date: ") or
                                            line.startswith("date: "))):
                 date = line[6:]
                 format = "tag"
             elif format == "tag" and line == "":
                 # when looking for tags (subject: from: etc) they
                 # end once you find a blank line in the source
                 format = "tagdone"
             elif message or line:
                 message.append(line)
             comments.append(line)
 
         eatdiff(message)
         eatdiff(comments)
         # Remember the exact starting line of the patch diffs before consuming
         # empty lines, for external use by TortoiseHg and others
         self.diffstartline = len(comments)
         eatempty(message)
         eatempty(comments)
 
         # make sure message isn't empty
         if format and format.startswith("tag") and subject:
             message.insert(0, "")
             message.insert(0, subject)
 
         self.message = message
         self.comments = comments
         self.user = user
         self.date = date
         self.parent = parent
         # nodeid and branch are for external use by TortoiseHg and others
         self.nodeid = nodeid
         self.branch = branch
         self.haspatch = diffstart > 1
         self.plainmode = plainmode
 
     def setuser(self, user):
         if not self.updateheader(['From: ', '# User '], user):
             try:
                 patchheaderat = self.comments.index('# HG changeset patch')
                 self.comments.insert(patchheaderat + 1, '# User ' + user)
             except ValueError:
                 if self.plainmode or self._hasheader(['Date: ']):
                     self.comments = ['From: ' + user] + self.comments
                 else:
                     tmp = ['# HG changeset patch', '# User ' + user, '']
                     self.comments = tmp + self.comments
         self.user = user
 
     def setdate(self, date):
         if not self.updateheader(['Date: ', '# Date '], date):
             try:
                 patchheaderat = self.comments.index('# HG changeset patch')
                 self.comments.insert(patchheaderat + 1, '# Date ' + date)
             except ValueError:
                 if self.plainmode or self._hasheader(['From: ']):
                     self.comments = ['Date: ' + date] + self.comments
                 else:
                     tmp = ['# HG changeset patch', '# Date ' + date, '']
                     self.comments = tmp + self.comments
         self.date = date
 
     def setparent(self, parent):
         if not self.updateheader(['# Parent '], parent):
             try:
                 patchheaderat = self.comments.index('# HG changeset patch')
                 self.comments.insert(patchheaderat + 1, '# Parent ' + parent)
             except ValueError:
                 pass
         self.parent = parent
 
     def setmessage(self, message):
         if self.comments:
             self._delmsg()
         self.message = [message]
         self.comments += self.message
 
     def updateheader(self, prefixes, new):
         '''Update all references to a field in the patch header.
         Return whether the field is present.'''
         res = False
         for prefix in prefixes:
             for i in xrange(len(self.comments)):
                 if self.comments[i].startswith(prefix):
                     self.comments[i] = prefix + new
                     res = True
                     break
         return res
 
     def _hasheader(self, prefixes):
         '''Check if a header starts with any of the given prefixes.'''
         for prefix in prefixes:
             for comment in self.comments:
                 if comment.startswith(prefix):
                     return True
         return False
 
     def __str__(self):
         if not self.comments:
             return ''
         return '\n'.join(self.comments) + '\n\n'
 
     def _delmsg(self):
         '''Remove existing message, keeping the rest of the comments fields.
         If comments contains 'subject: ', message will prepend
         the field and a blank line.'''
         if self.message:
             subj = 'subject: ' + self.message[0].lower()
             for i in xrange(len(self.comments)):
                 if subj == self.comments[i].lower():
                     del self.comments[i]
                     self.message = self.message[2:]
                     break
         ci = 0
         for mi in self.message:
             while mi != self.comments[ci]:
                 ci += 1
             del self.comments[ci]
 
 class queue(object):
     def __init__(self, ui, path, patchdir=None):
         self.basepath = path
         try:
             fh = open(os.path.join(path, 'patches.queue'))
             cur = fh.read().rstrip()
             fh.close()
             if not cur:
                 curpath = os.path.join(path, 'patches')
             else:
                 curpath = os.path.join(path, 'patches-' + cur)
         except IOError:
             curpath = os.path.join(path, 'patches')
         self.path = patchdir or curpath
         self.opener = scmutil.opener(self.path)
         self.ui = ui
         self.applied_dirty = 0
         self.series_dirty = 0
         self.added = []
         self.series_path = "series"
         self.status_path = "status"
         self.guards_path = "guards"
         self.active_guards = None
         self.guards_dirty = False
         # Handle mq.git as a bool with extended values
         try:
             gitmode = ui.configbool('mq', 'git', None)
             if gitmode is None:
                 raise error.ConfigError()
             self.gitmode = gitmode and 'yes' or 'no'
         except error.ConfigError:
             self.gitmode = ui.config('mq', 'git', 'auto').lower()
         self.plainmode = ui.configbool('mq', 'plain', False)
 
     @util.propertycache
     def applied(self):
         if os.path.exists(self.join(self.status_path)):
             def parselines(lines):
                 for l in lines:
                     entry = l.split(':', 1)
                     if len(entry) > 1:
                         n, name = entry
                         yield statusentry(bin(n), name)
                     elif l.strip():
                         self.ui.warn(_('malformated mq status line: %s\n') % entry)
                     # else we ignore empty lines
             lines = self.opener.read(self.status_path).splitlines()
             return list(parselines(lines))
         return []
 
     @util.propertycache
     def full_series(self):
         if os.path.exists(self.join(self.series_path)):
             return self.opener.read(self.series_path).splitlines()
         return []
 
     @util.propertycache
     def series(self):
         self.parse_series()
         return self.series
 
     @util.propertycache
     def series_guards(self):
         self.parse_series()
         return self.series_guards
 
     def invalidate(self):
         for a in 'applied full_series series series_guards'.split():
             if a in self.__dict__:
                 delattr(self, a)
         self.applied_dirty = 0
         self.series_dirty = 0
         self.guards_dirty = False
         self.active_guards = None
 
     def diffopts(self, opts={}, patchfn=None):
         diffopts = patch.diffopts(self.ui, opts)
         if self.gitmode == 'auto':
             diffopts.upgrade = True
         elif self.gitmode == 'keep':
             pass
         elif self.gitmode in ('yes', 'no'):
             diffopts.git = self.gitmode == 'yes'
         else:
             raise util.Abort(_('mq.git option can be auto/keep/yes/no'
                                ' got %s') % self.gitmode)
         if patchfn:
             diffopts = self.patchopts(diffopts, patchfn)
         return diffopts
 
     def patchopts(self, diffopts, *patches):
         """Return a copy of input diff options with git set to true if
         referenced patch is a git patch and should be preserved as such.
         """
         diffopts = diffopts.copy()
         if not diffopts.git and self.gitmode == 'keep':
             for patchfn in patches:
                 patchf = self.opener(patchfn, 'r')
                 # if the patch was a git patch, refresh it as a git patch
                 for line in patchf:
                     if line.startswith('diff --git'):
                         diffopts.git = True
                         break
                 patchf.close()
         return diffopts
 
     def join(self, *p):
         return os.path.join(self.path, *p)
 
     def find_series(self, patch):
         def matchpatch(l):
             l = l.split('#', 1)[0]
             return l.strip() == patch
         for index, l in enumerate(self.full_series):
             if matchpatch(l):
                 return index
         return None
 
     guard_re = re.compile(r'\s?#([-+][^-+# \t\r\n\f][^# \t\r\n\f]*)')
 
     def parse_series(self):
         self.series = []
         self.series_guards = []
         for l in self.full_series:
             h = l.find('#')
             if h == -1:
                 patch = l
                 comment = ''
             elif h == 0:
                 continue
             else:
                 patch = l[:h]
                 comment = l[h:]
             patch = patch.strip()
             if patch:
                 if patch in self.series:
                     raise util.Abort(_('%s appears more than once in %s') %
                                      (patch, self.join(self.series_path)))
                 self.series.append(patch)
                 self.series_guards.append(self.guard_re.findall(comment))
 
     def check_guard(self, guard):
         if not guard:
             return _('guard cannot be an empty string')
         bad_chars = '# \t\r\n\f'
         first = guard[0]
         if first in '-+':
             return (_('guard %r starts with invalid character: %r') %
                       (guard, first))
         for c in bad_chars:
             if c in guard:
                 return _('invalid character in guard %r: %r') % (guard, c)
 
     def set_active(self, guards):
         for guard in guards:
             bad = self.check_guard(guard)
             if bad:
                 raise util.Abort(bad)
         guards = sorted(set(guards))
         self.ui.debug('active guards: %s\n' % ' '.join(guards))
         self.active_guards = guards
         self.guards_dirty = True
 
     def active(self):
         if self.active_guards is None:
             self.active_guards = []
             try:
                 guards = self.opener.read(self.guards_path).split()
             except IOError, err:
                 if err.errno != errno.ENOENT:
                     raise
                 guards = []
             for i, guard in enumerate(guards):
                 bad = self.check_guard(guard)
                 if bad:
                     self.ui.warn('%s:%d: %s\n' %
                                  (self.join(self.guards_path), i + 1, bad))
                 else:
                     self.active_guards.append(guard)
         return self.active_guards
 
     def set_guards(self, idx, guards):
         for g in guards:
             if len(g) < 2:
                 raise util.Abort(_('guard %r too short') % g)
             if g[0] not in '-+':
                 raise util.Abort(_('guard %r starts with invalid char') % g)
             bad = self.check_guard(g[1:])
             if bad:
                 raise util.Abort(bad)
         drop = self.guard_re.sub('', self.full_series[idx])
         self.full_series[idx] = drop + ''.join([' #' + g for g in guards])
         self.parse_series()
         self.series_dirty = True
 
     def pushable(self, idx):
         if isinstance(idx, str):
             idx = self.series.index(idx)
         patchguards = self.series_guards[idx]
         if not patchguards:
             return True, None
         guards = self.active()
         exactneg = [g for g in patchguards if g[0] == '-' and g[1:] in guards]
         if exactneg:
             return False, exactneg[0]
         pos = [g for g in patchguards if g[0] == '+']
         exactpos = [g for g in pos if g[1:] in guards]
         if pos:
             if exactpos:
                 return True, exactpos[0]
             return False, pos
         return True, ''
 
     def explain_pushable(self, idx, all_patches=False):
         write = all_patches and self.ui.write or self.ui.warn
         if all_patches or self.ui.verbose:
             if isinstance(idx, str):
                 idx = self.series.index(idx)
             pushable, why = self.pushable(idx)
             if all_patches and pushable:
                 if why is None:
                     write(_('allowing %s - no guards in effect\n') %
                           self.series[idx])
                 else:
                     if not why:
                         write(_('allowing %s - no matching negative guards\n') %
                               self.series[idx])
                     else:
                         write(_('allowing %s - guarded by %r\n') %
                               (self.series[idx], why))
             if not pushable:
                 if why:
                     write(_('skipping %s - guarded by %r\n') %
                           (self.series[idx], why))
                 else:
                     write(_('skipping %s - no matching guards\n') %
                           self.series[idx])
 
     def save_dirty(self):
         def write_list(items, path):
             fp = self.opener(path, 'w')
             for i in items:
                 fp.write("%s\n" % i)
             fp.close()
         if self.applied_dirty:
             write_list(map(str, self.applied), self.status_path)
         if self.series_dirty:
             write_list(self.full_series, self.series_path)
         if self.guards_dirty:
             write_list(self.active_guards, self.guards_path)
         if self.added:
             qrepo = self.qrepo()
             if qrepo:
                 qrepo[None].add(f for f in self.added if f not in qrepo[None])
             self.added = []
 
     def removeundo(self, repo):
         undo = repo.sjoin('undo')
         if not os.path.exists(undo):
             return
         try:
             os.unlink(undo)
         except OSError, inst:
             self.ui.warn(_('error removing undo: %s\n') % str(inst))
 
     def printdiff(self, repo, diffopts, node1, node2=None, files=None,
                   fp=None, changes=None, opts={}):
         stat = opts.get('stat')
         m = cmdutil.match(repo, files, opts)
         cmdutil.diffordiffstat(self.ui, repo, diffopts, node1, node2,  m,
                                changes, stat, fp)
 
     def mergeone(self, repo, mergeq, head, patch, rev, diffopts):
         # first try just applying the patch
         (err, n) = self.apply(repo, [patch], update_status=False,
                               strict=True, merge=rev)
 
         if err == 0:
             return (err, n)
 
         if n is None:
             raise util.Abort(_("apply failed for patch %s") % patch)
 
         self.ui.warn(_("patch didn't work out, merging %s\n") % patch)
 
         # apply failed, strip away that rev and merge.
         hg.clean(repo, head)
         self.strip(repo, [n], update=False, backup='strip')
 
         ctx = repo[rev]
         ret = hg.merge(repo, rev)
         if ret:
             raise util.Abort(_("update returned %d") % ret)
         n = repo.commit(ctx.description(), ctx.user(), force=True)
         if n is None:
             raise util.Abort(_("repo commit failed"))
         try:
             ph = patchheader(mergeq.join(patch), self.plainmode)
         except:
             raise util.Abort(_("unable to read %s") % patch)
 
         diffopts = self.patchopts(diffopts, patch)
         patchf = self.opener(patch, "w")
         comments = str(ph)
         if comments:
             patchf.write(comments)
         self.printdiff(repo, diffopts, head, n, fp=patchf)
         patchf.close()
         self.removeundo(repo)
         return (0, n)
 
     def qparents(self, repo, rev=None):
         if rev is None:
             (p1, p2) = repo.dirstate.parents()
             if p2 == nullid:
                 return p1
             if not self.applied:
                 return None
             return self.applied[-1].node
         p1, p2 = repo.changelog.parents(rev)
         if p2 != nullid and p2 in [x.node for x in self.applied]:
             return p2
         return p1
 
     def mergepatch(self, repo, mergeq, series, diffopts):
         if not self.applied:
             # each of the patches merged in will have two parents.  This
             # can confuse the qrefresh, qdiff, and strip code because it
             # needs to know which parent is actually in the patch queue.
             # so, we insert a merge marker with only one parent.  This way
             # the first patch in the queue is never a merge patch
             #
             pname = ".hg.patches.merge.marker"
             n = repo.commit('[mq]: merge marker', force=True)
             self.removeundo(repo)
             self.applied.append(statusentry(n, pname))
             self.applied_dirty = 1
 
         head = self.qparents(repo)
 
         for patch in series:
             patch = mergeq.lookup(patch, strict=True)
             if not patch:
                 self.ui.warn(_("patch %s does not exist\n") % patch)
                 return (1, None)
             pushable, reason = self.pushable(patch)
             if not pushable:
                 self.explain_pushable(patch, all_patches=True)
                 continue
             info = mergeq.isapplied(patch)
             if not info:
                 self.ui.warn(_("patch %s is not applied\n") % patch)
                 return (1, None)
             rev = info[1]
             err, head = self.mergeone(repo, mergeq, head, patch, rev, diffopts)
             if head:
                 self.applied.append(statusentry(head, patch))
                 self.applied_dirty = 1
             if err:
                 return (err, head)
         self.save_dirty()
         return (0, head)
 
     def patch(self, repo, patchfile):
         '''Apply patchfile  to the working directory.
         patchfile: name of patch file'''
         files = {}
         try:
             fuzz = patch.patch(patchfile, self.ui, strip=1, cwd=repo.root,
                                files=files, eolmode=None)
         except Exception, inst:
             self.ui.note(str(inst) + '\n')
             if not self.ui.verbose:
                 self.ui.warn(_("patch failed, unable to continue (try -v)\n"))
             return (False, files, False)
 
         return (True, files, fuzz)
 
     def apply(self, repo, series, list=False, update_status=True,
               strict=False, patchdir=None, merge=None, all_files=None):
         wlock = lock = tr = None
         try:
             wlock = repo.wlock()
             lock = repo.lock()
             tr = repo.transaction("qpush")
             try:
                 ret = self._apply(repo, series, list, update_status,
                                   strict, patchdir, merge, all_files=all_files)
                 tr.close()
                 self.save_dirty()
                 return ret
             except:
                 try:
                     tr.abort()
                 finally:
                     repo.invalidate()
                     repo.dirstate.invalidate()
                 raise
         finally:
             release(tr, lock, wlock)
             self.removeundo(repo)
 
     def _apply(self, repo, series, list=False, update_status=True,
                strict=False, patchdir=None, merge=None, all_files=None):
         '''returns (error, hash)
         error = 1 for unable to read, 2 for patch failed, 3 for patch fuzz'''
         # TODO unify with commands.py
         if not patchdir:
             patchdir = self.path
         err = 0
         n = None
         for patchname in series:
             pushable, reason = self.pushable(patchname)
             if not pushable:
                 self.explain_pushable(patchname, all_patches=True)
                 continue
             self.ui.status(_("applying %s\n") % patchname)
             pf = os.path.join(patchdir, patchname)
 
             try:
                 ph = patchheader(self.join(patchname), self.plainmode)
             except:
                 self.ui.warn(_("unable to read %s\n") % patchname)
                 err = 1
                 break
 
             message = ph.message
             if not message:
                 # The commit message should not be translated
                 message = "imported patch %s\n" % patchname
             else:
                 if list:
                     # The commit message should not be translated
                     message.append("\nimported patch %s" % patchname)
                 message = '\n'.join(message)
 
             if ph.haspatch:
                 (patcherr, files, fuzz) = self.patch(repo, pf)
                 if all_files is not None:
                     all_files.update(files)
                 patcherr = not patcherr
             else:
                 self.ui.warn(_("patch %s is empty\n") % patchname)
                 patcherr, files, fuzz = 0, [], 0
 
             if merge and files:
                 # Mark as removed/merged and update dirstate parent info
                 removed = []
                 merged = []
                 for f in files:
                     if os.path.lexists(repo.wjoin(f)):
                         merged.append(f)
                     else:
                         removed.append(f)
                 for f in removed:
                     repo.dirstate.remove(f)
                 for f in merged:
                     repo.dirstate.merge(f)
                 p1, p2 = repo.dirstate.parents()
                 repo.dirstate.setparents(p1, merge)
 
             files = cmdutil.updatedir(self.ui, repo, files)
             match = cmdutil.matchfiles(repo, files or [])
             n = repo.commit(message, ph.user, ph.date, match=match, force=True)
 
             if n is None:
                 raise util.Abort(_("repository commit failed"))
 
             if update_status:
                 self.applied.append(statusentry(n, patchname))
 
             if patcherr:
                 self.ui.warn(_("patch failed, rejects left in working dir\n"))
                 err = 2
                 break
 
             if fuzz and strict:
                 self.ui.warn(_("fuzz found when applying patch, stopping\n"))
                 err = 3
                 break
         return (err, n)
 
     def _cleanup(self, patches, numrevs, keep=False):
         if not keep:
             r = self.qrepo()
             if r:
                 r[None].remove(patches, True)
             else:
                 for p in patches:
                     os.unlink(self.join(p))
 
         if numrevs:
             qfinished = self.applied[:numrevs]
             del self.applied[:numrevs]
             self.applied_dirty = 1
 
         unknown = []
 
         for (i, p) in sorted([(self.find_series(p), p) for p in patches],
                              reverse=True):
             if i is not None:
                 del self.full_series[i]
             else:
                 unknown.append(p)
 
         if unknown:
             if numrevs:
                 rev  = dict((entry.name, entry.node) for entry in qfinished)
                 for p in unknown:
                     msg = _('revision %s refers to unknown patches: %s\n')
                     self.ui.warn(msg % (short(rev[p]), p))
             else:
                 msg = _('unknown patches: %s\n')
                 raise util.Abort(''.join(msg % p for p in unknown))
 
         self.parse_series()
         self.series_dirty = 1
 
     def _revpatches(self, repo, revs):
         firstrev = repo[self.applied[0].node].rev()
         patches = []
         for i, rev in enumerate(revs):
 
             if rev < firstrev:
                 raise util.Abort(_('revision %d is not managed') % rev)
 
             ctx = repo[rev]
             base = self.applied[i].node
             if ctx.node() != base:
                 msg = _('cannot delete revision %d above applied patches')
                 raise util.Abort(msg % rev)
 
             patch = self.applied[i].name
             for fmt in ('[mq]: %s', 'imported patch %s'):
                 if ctx.description() == fmt % patch:
                     msg = _('patch %s finalized without changeset message\n')
                     repo.ui.status(msg % patch)
                     break
 
             patches.append(patch)
         return patches
 
     def finish(self, repo, revs):
         patches = self._revpatches(repo, sorted(revs))
         self._cleanup(patches, len(patches))
 
     def delete(self, repo, patches, opts):
         if not patches and not opts.get('rev'):
             raise util.Abort(_('qdelete requires at least one revision or '
                                'patch name'))
 
         realpatches = []
         for patch in patches:
             patch = self.lookup(patch, strict=True)
             info = self.isapplied(patch)
             if info:
                 raise util.Abort(_("cannot delete applied patch %s") % patch)
             if patch not in self.series:
                 raise util.Abort(_("patch %s not in series file") % patch)
             if patch not in realpatches:
                 realpatches.append(patch)
 
         numrevs = 0
         if opts.get('rev'):
             if not self.applied:
                 raise util.Abort(_('no patches applied'))
             revs = cmdutil.revrange(repo, opts.get('rev'))
             if len(revs) > 1 and revs[0] > revs[1]:
                 revs.reverse()
             revpatches = self._revpatches(repo, revs)
             realpatches += revpatches
             numrevs = len(revpatches)
 
         self._cleanup(realpatches, numrevs, opts.get('keep'))
 
     def check_toppatch(self, repo):
         if self.applied:
             top = self.applied[-1].node
             patch = self.applied[-1].name
             pp = repo.dirstate.parents()
             if top not in pp:
                 raise util.Abort(_("working directory revision is not qtip"))
             return top, patch
         return None, None
 
     def check_substate(self, repo):
         '''return list of subrepos at a different revision than substate.
         Abort if any subrepos have uncommitted changes.'''
         inclsubs = []
         wctx = repo[None]
         for s in wctx.substate:
             if wctx.sub(s).dirty(True):
                 raise util.Abort(
                     _("uncommitted changes in subrepository %s") % s)
             elif wctx.sub(s).dirty():
                 inclsubs.append(s)
         return inclsubs
 
     def check_localchanges(self, repo, force=False, refresh=True):
         m, a, r, d = repo.status()[:4]
         if (m or a or r or d) and not force:
             if refresh:
                 raise util.Abort(_("local changes found, refresh first"))
             else:
                 raise util.Abort(_("local changes found"))
         return m, a, r, d
 
     _reserved = ('series', 'status', 'guards', '.', '..')
     def check_reserved_name(self, name):
         if name in self._reserved:
             raise util.Abort(_('"%s" cannot be used as the name of a patch')
                              % name)
         for prefix in ('.hg', '.mq'):
             if name.startswith(prefix):
                 raise util.Abort(_('patch name cannot begin with "%s"')
                                  % prefix)
         for c in ('#', ':'):
             if c in name:
                 raise util.Abort(_('"%s" cannot be used in the name of a patch')
                                  % c)
 
 
     def new(self, repo, patchfn, *pats, **opts):
         """options:
            msg: a string or a no-argument function returning a string
         """
         msg = opts.get('msg')
         user = opts.get('user')
         date = opts.get('date')
         if date:
             date = util.parsedate(date)
         diffopts = self.diffopts({'git': opts.get('git')})
         self.check_reserved_name(patchfn)
         if os.path.exists(self.join(patchfn)):
             if os.path.isdir(self.join(patchfn)):
                 raise util.Abort(_('"%s" already exists as a directory')
                                  % patchfn)
             else:
                 raise util.Abort(_('patch "%s" already exists') % patchfn)
 
         inclsubs = self.check_substate(repo)
         if inclsubs:
             inclsubs.append('.hgsubstate')
         if opts.get('include') or opts.get('exclude') or pats:
             if inclsubs:
                 pats = list(pats or []) + inclsubs
             match = cmdutil.match(repo, pats, opts)
             # detect missing files in pats
             def badfn(f, msg):
                 if f != '.hgsubstate': # .hgsubstate is auto-created
                     raise util.Abort('%s: %s' % (f, msg))
             match.bad = badfn
             m, a, r, d = repo.status(match=match)[:4]
         else:
             m, a, r, d = self.check_localchanges(repo, force=True)
             match = cmdutil.matchfiles(repo, m + a + r + inclsubs)
         if len(repo[None].parents()) > 1:
             raise util.Abort(_('cannot manage merge changesets'))
         commitfiles = m + a + r
         self.check_toppatch(repo)
         insert = self.full_series_end()
         wlock = repo.wlock()
         try:
             try:
                 # if patch file write fails, abort early
                 p = self.opener(patchfn, "w")
             except IOError, e:
                 raise util.Abort(_('cannot write patch "%s": %s')
                                  % (patchfn, e.strerror))
             try:
                 if self.plainmode:
                     if user:
                         p.write("From: " + user + "\n")
                         if not date:
                             p.write("\n")
                     if date:
                         p.write("Date: %d %d\n\n" % date)
                 else:
                     p.write("# HG changeset patch\n")
                     p.write("# Parent "
                             + hex(repo[None].p1().node()) + "\n")
                     if user:
                         p.write("# User " + user + "\n")
                     if date:
                         p.write("# Date %s %s\n\n" % date)
                 if hasattr(msg, '__call__'):
                     msg = msg()
                 commitmsg = msg and msg or ("[mq]: %s" % patchfn)
                 n = repo.commit(commitmsg, user, date, match=match, force=True)
                 if n is None:
                     raise util.Abort(_("repo commit failed"))
                 try:
                     self.full_series[insert:insert] = [patchfn]
                     self.applied.append(statusentry(n, patchfn))
                     self.parse_series()
                     self.series_dirty = 1
                     self.applied_dirty = 1
                     if msg:
                         msg = msg + "\n\n"
                         p.write(msg)
                     if commitfiles:
                         parent = self.qparents(repo, n)
                         chunks = patch.diff(repo, node1=parent, node2=n,
                                             match=match, opts=diffopts)
                         for chunk in chunks:
                             p.write(chunk)
                     p.close()
                     wlock.release()
                     wlock = None
                     r = self.qrepo()
                     if r:
                         r[None].add([patchfn])
                 except:
                     repo.rollback()
                     raise
             except Exception:
                 patchpath = self.join(patchfn)
                 try:
                     os.unlink(patchpath)
                 except:
                     self.ui.warn(_('error unlinking %s\n') % patchpath)
                 raise
             self.removeundo(repo)
         finally:
             release(wlock)
 
     def strip(self, repo, revs, update=True, backup="all", force=None):
         wlock = lock = None
         try:
             wlock = repo.wlock()
             lock = repo.lock()
 
             if update:
                 self.check_localchanges(repo, force=force, refresh=False)
                 urev = self.qparents(repo, revs[0])
                 hg.clean(repo, urev)
                 repo.dirstate.write()
 
             self.removeundo(repo)
             for rev in revs:
                 repair.strip(self.ui, repo, rev, backup)
             # strip may have unbundled a set of backed up revisions after
             # the actual strip
             self.removeundo(repo)
         finally:
             release(lock, wlock)
 
     def isapplied(self, patch):
         """returns (index, rev, patch)"""
         for i, a in enumerate(self.applied):
             if a.name == patch:
                 return (i, a.node, a.name)
         return None
 
     # if the exact patch name does not exist, we try a few
     # variations.  If strict is passed, we try only #1
     #
     # 1) a number to indicate an offset in the series file
     # 2) a unique substring of the patch name was given
     # 3) patchname[-+]num to indicate an offset in the series file
     def lookup(self, patch, strict=False):
         patch = patch and str(patch)
 
         def partial_name(s):
             if s in self.series:
                 return s
             matches = [x for x in self.series if s in x]
             if len(matches) > 1:
                 self.ui.warn(_('patch name "%s" is ambiguous:\n') % s)
                 for m in matches:
                     self.ui.warn('  %s\n' % m)
                 return None
             if matches:
                 return matches[0]
             if self.series and self.applied:
                 if s == 'qtip':
                     return self.series[self.series_end(True)-1]
                 if s == 'qbase':
                     return self.series[0]
             return None
 
         if patch is None:
             return None
         if patch in self.series:
             return patch
 
         if not os.path.isfile(self.join(patch)):
             try:
                 sno = int(patch)
             except (ValueError, OverflowError):
                 pass
             else:
                 if -len(self.series) <= sno < len(self.series):
                     return self.series[sno]
 
             if not strict:
                 res = partial_name(patch)
                 if res:
                     return res
                 minus = patch.rfind('-')
                 if minus >= 0:
                     res = partial_name(patch[:minus])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(patch[minus + 1:] or 1)
                         except (ValueError, OverflowError):
                             pass
                         else:
                             if i - off >= 0:
                                 return self.series[i - off]
                 plus = patch.rfind('+')
                 if plus >= 0:
                     res = partial_name(patch[:plus])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(patch[plus + 1:] or 1)
                         except (ValueError, OverflowError):
                             pass
                         else:
                             if i + off < len(self.series):
                                 return self.series[i + off]
         raise util.Abort(_("patch %s not in series") % patch)
 
     def push(self, repo, patch=None, force=False, list=False,
              mergeq=None, all=False, move=False, exact=False):
         diffopts = self.diffopts()
         wlock = repo.wlock()
         try:
             heads = []
             for b, ls in repo.branchmap().iteritems():
                 heads += ls
             if not heads:
                 heads = [nullid]
             if repo.dirstate.p1() not in heads and not exact:
                 self.ui.status(_("(working directory not at a head)\n"))
 
             if not self.series:
                 self.ui.warn(_('no patches in series\n'))
                 return 0
 
             patch = self.lookup(patch)
             # Suppose our series file is: A B C and the current 'top'
             # patch is B. qpush C should be performed (moving forward)
             # qpush B is a NOP (no change) qpush A is an error (can't
             # go backwards with qpush)
             if patch:
                 info = self.isapplied(patch)
                 if info and info[0] >= len(self.applied) - 1:
                     self.ui.warn(
                         _('qpush: %s is already at the top\n') % patch)
                     return 0
 
                 pushable, reason = self.pushable(patch)
                 if pushable:
                     if self.series.index(patch) < self.series_end():
                         raise util.Abort(
                             _("cannot push to a previous patch: %s") % patch)
                 else:
                     if reason:
                         reason = _('guarded by %r') % reason
                     else:
                         reason = _('no matching guards')
                     self.ui.warn(_("cannot push '%s' - %s\n") % (patch, reason))
                     return 1
             elif all:
                 patch = self.series[-1]
                 if self.isapplied(patch):
                     self.ui.warn(_('all patches are currently applied\n'))
                     return 0
 
             # Following the above example, starting at 'top' of B:
             # qpush should be performed (pushes C), but a subsequent
             # qpush without an argument is an error (nothing to
             # apply). This allows a loop of "...while hg qpush..." to
             # work as it detects an error when done
             start = self.series_end()
             if start == len(self.series):
                 self.ui.warn(_('patch series already fully applied\n'))
                 return 1
             if not force:
                 self.check_localchanges(repo, refresh=self.applied)
 
             if exact:
                 if move:
                     raise util.Abort(_("cannot use --exact and --move together"))
                 if self.applied:
                     raise util.Abort(_("cannot push --exact with applied patches"))
                 root = self.series[start]
                 target = patchheader(self.join(root), self.plainmode).parent
                 if not target:
                     raise util.Abort(_("%s does not have a parent recorded" % root))
                 if not repo[target] == repo['.']:
                     hg.update(repo, target)
 
             if move:
                 if not patch:
                     raise util.Abort(_("please specify the patch to move"))
                 for i, rpn in enumerate(self.full_series[start:]):
                     # strip markers for patch guards
                     if self.guard_re.split(rpn, 1)[0] == patch:
                         break
                 index = start + i
                 assert index < len(self.full_series)
                 fullpatch = self.full_series[index]
                 del self.full_series[index]
                 self.full_series.insert(start, fullpatch)
                 self.parse_series()
                 self.series_dirty = 1
 
             self.applied_dirty = 1
             if start > 0:
                 self.check_toppatch(repo)
             if not patch:
                 patch = self.series[start]
                 end = start + 1
             else:
                 end = self.series.index(patch, start) + 1
 
             s = self.series[start:end]
             all_files = set()
             try:
                 if mergeq:
                     ret = self.mergepatch(repo, mergeq, s, diffopts)
                 else:
                     ret = self.apply(repo, s, list, all_files=all_files)
             except:
                 self.ui.warn(_('cleaning up working directory...'))
                 node = repo.dirstate.p1()
                 hg.revert(repo, node, None)
                 # only remove unknown files that we know we touched or
                 # created while patching
                 for f in all_files:
                     if f not in repo.dirstate:
                         try:
                             util.unlinkpath(repo.wjoin(f))
                         except OSError, inst:
                             if inst.errno != errno.ENOENT:
                                 raise
                 self.ui.warn(_('done\n'))
                 raise
 
             if not self.applied:
                 return ret[0]
             top = self.applied[-1].name
             if ret[0] and ret[0] > 1:
                 msg = _("errors during apply, please fix and refresh %s\n")
                 self.ui.write(msg % top)
             else:
                 self.ui.write(_("now at: %s\n") % top)
             return ret[0]
 
         finally:
             wlock.release()
 
     def pop(self, repo, patch=None, force=False, update=True, all=False):
         wlock = repo.wlock()
         try:
             if patch:
                 # index, rev, patch
                 info = self.isapplied(patch)
                 if not info:
                     patch = self.lookup(patch)
                 info = self.isapplied(patch)
                 if not info:
                     raise util.Abort(_("patch %s is not applied") % patch)
 
             if not self.applied:
                 # Allow qpop -a to work repeatedly,
                 # but not qpop without an argument
                 self.ui.warn(_("no patches applied\n"))
                 return not all
 
             if all:
                 start = 0
             elif patch:
                 start = info[0] + 1
             else:
                 start = len(self.applied) - 1
 
             if start >= len(self.applied):
                 self.ui.warn(_("qpop: %s is already at the top\n") % patch)
                 return
 
             if not update:
                 parents = repo.dirstate.parents()
                 rr = [x.node for x in self.applied]
                 for p in parents:
                     if p in rr:
                         self.ui.warn(_("qpop: forcing dirstate update\n"))
                         update = True
             else:
                 parents = [p.node() for p in repo[None].parents()]
                 needupdate = False
                 for entry in self.applied[start:]:
                     if entry.node in parents:
                         needupdate = True
                         break
                 update = needupdate
 
             if not force and update:
                 self.check_localchanges(repo)
 
             self.applied_dirty = 1
             end = len(self.applied)
             rev = self.applied[start].node
             if update:
                 top = self.check_toppatch(repo)[0]
 
             try:
                 heads = repo.changelog.heads(rev)
             except error.LookupError:
                 node = short(rev)
                 raise util.Abort(_('trying to pop unknown node %s') % node)
 
             if heads != [self.applied[-1].node]:
                 raise util.Abort(_("popping would remove a revision not "
                                    "managed by this patch queue"))
 
             # we know there are no local changes, so we can make a simplified
             # form of hg.update.
             if update:
                 qp = self.qparents(repo, rev)
                 ctx = repo[qp]
                 m, a, r, d = repo.status(qp, top)[:4]
                 if d:
                     raise util.Abort(_("deletions found between repo revs"))
                 for f in a:
                     try:
                         util.unlinkpath(repo.wjoin(f))
                     except OSError, e:
                         if e.errno != errno.ENOENT:
                             raise
                     repo.dirstate.forget(f)
                 for f in m + r:
                     fctx = ctx[f]
                     repo.wwrite(f, fctx.data(), fctx.flags())
                     repo.dirstate.normal(f)
                 repo.dirstate.setparents(qp, nullid)
             for patch in reversed(self.applied[start:end]):
                 self.ui.status(_("popping %s\n") % patch.name)
             del self.applied[start:end]
             self.strip(repo, [rev], update=False, backup='strip')
             if self.applied:
                 self.ui.write(_("now at: %s\n") % self.applied[-1].name)
             else:
                 self.ui.write(_("patch queue now empty\n"))
         finally:
             wlock.release()
 
     def diff(self, repo, pats, opts):
         top, patch = self.check_toppatch(repo)
         if not top:
             self.ui.write(_("no patches applied\n"))
             return
         qp = self.qparents(repo, top)
         if opts.get('reverse'):
             node1, node2 = None, qp
         else:
             node1, node2 = qp, None
         diffopts = self.diffopts(opts, patch)
         self.printdiff(repo, diffopts, node1, node2, files=pats, opts=opts)
 
     def refresh(self, repo, pats=None, **opts):
         if not self.applied:
             self.ui.write(_("no patches applied\n"))
             return 1
         msg = opts.get('msg', '').rstrip()
         newuser = opts.get('user')
         newdate = opts.get('date')
         if newdate:
             newdate = '%d %d' % util.parsedate(newdate)
         wlock = repo.wlock()
 
         try:
             self.check_toppatch(repo)
             (top, patchfn) = (self.applied[-1].node, self.applied[-1].name)
             if repo.changelog.heads(top) != [top]:
                 raise util.Abort(_("cannot refresh a revision with children"))
 
             inclsubs = self.check_substate(repo)
 
             cparents = repo.changelog.parents(top)
             patchparent = self.qparents(repo, top)
             ph = patchheader(self.join(patchfn), self.plainmode)
             diffopts = self.diffopts({'git': opts.get('git')}, patchfn)
             if msg:
                 ph.setmessage(msg)
             if newuser:
                 ph.setuser(newuser)
             if newdate:
                 ph.setdate(newdate)
             ph.setparent(hex(patchparent))
 
             # only commit new patch when write is complete
             patchf = self.opener(patchfn, 'w', atomictemp=True)
 
             comments = str(ph)
             if comments:
                 patchf.write(comments)
 
             # update the dirstate in place, strip off the qtip commit
             # and then commit.
             #
             # this should really read:
             #   mm, dd, aa = repo.status(top, patchparent)[:3]
             # but we do it backwards to take advantage of manifest/chlog
             # caching against the next repo.status call
             mm, aa, dd = repo.status(patchparent, top)[:3]
             changes = repo.changelog.read(top)
             man = repo.manifest.read(changes[0])
             aaa = aa[:]
             matchfn = cmdutil.match(repo, pats, opts)
             # in short mode, we only diff the files included in the
             # patch already plus specified files
             if opts.get('short'):
                 # if amending a patch, we start with existing
                 # files plus specified files - unfiltered
                 match = cmdutil.matchfiles(repo, mm + aa + dd + matchfn.files())
                 # filter with inc/exl options
                 matchfn = cmdutil.match(repo, opts=opts)
             else:
                 match = cmdutil.matchall(repo)
             m, a, r, d = repo.status(match=match)[:4]
             mm = set(mm)
             aa = set(aa)
             dd = set(dd)
 
             # we might end up with files that were added between
             # qtip and the dirstate parent, but then changed in the
             # local dirstate. in this case, we want them to only
             # show up in the added section
             for x in m:
                 if x not in aa:
                     mm.add(x)
             # we might end up with files added by the local dirstate that
             # were deleted by the patch.  In this case, they should only
             # show up in the changed section.
             for x in a:
                 if x in dd:
                     dd.remove(x)
                     mm.add(x)
                 else:
                     aa.add(x)
             # make sure any files deleted in the local dirstate
             # are not in the add or change column of the patch
             forget = []
             for x in d + r:
                 if x in aa:
                     aa.remove(x)
                     forget.append(x)
                     continue
                 else:
                     mm.discard(x)
                 dd.add(x)
 
             m = list(mm)
             r = list(dd)
             a = list(aa)
             c = [filter(matchfn, l) for l in (m, a, r)]
             match = cmdutil.matchfiles(repo, set(c[0] + c[1] + c[2] + inclsubs))
             chunks = patch.diff(repo, patchparent, match=match,
                                 changes=c, opts=diffopts)
             for chunk in chunks:
                 patchf.write(chunk)
 
             try:
                 if diffopts.git or diffopts.upgrade:
                     copies = {}
                     for dst in a:
                         src = repo.dirstate.copied(dst)
                         # during qfold, the source file for copies may
                         # be removed. Treat this as a simple add.
                         if src is not None and src in repo.dirstate:
                             copies.setdefault(src, []).append(dst)
                         repo.dirstate.add(dst)
                     # remember the copies between patchparent and qtip
                     for dst in aaa:
                         f = repo.file(dst)
                         src = f.renamed(man[dst])
                         if src:
                             copies.setdefault(src[0], []).extend(
                                 copies.get(dst, []))
                             if dst in a:
                                 copies[src[0]].append(dst)
                         # we can't copy a file created by the patch itself
                         if dst in copies:
                             del copies[dst]
                     for src, dsts in copies.iteritems():
                         for dst in dsts:
                             repo.dirstate.copy(src, dst)
                 else:
                     for dst in a:
                         repo.dirstate.add(dst)
                     # Drop useless copy information
                     for f in list(repo.dirstate.copies()):
                         repo.dirstate.copy(None, f)
                 for f in r:
                     repo.dirstate.remove(f)
                 # if the patch excludes a modified file, mark that
                 # file with mtime=0 so status can see it.
                 mm = []
                 for i in xrange(len(m)-1, -1, -1):
                     if not matchfn(m[i]):
                         mm.append(m[i])
                         del m[i]
                 for f in m:
                     repo.dirstate.normal(f)
                 for f in mm:
                     repo.dirstate.normallookup(f)
                 for f in forget:
                     repo.dirstate.forget(f)
 
                 if not msg:
                     if not ph.message:
                         message = "[mq]: %s\n" % patchfn
                     else:
                         message = "\n".join(ph.message)
                 else:
                     message = msg
 
                 user = ph.user or changes[1]
 
                 # assumes strip can roll itself back if interrupted
                 repo.dirstate.setparents(*cparents)
                 self.applied.pop()
                 self.applied_dirty = 1
                 self.strip(repo, [top], update=False,
                            backup='strip')
             except:
                 repo.dirstate.invalidate()
                 raise
 
             try:
                 # might be nice to attempt to roll back strip after this
                 n = repo.commit(message, user, ph.date, match=match,
                                 force=True)
                 # only write patch after a successful commit
                 patchf.rename()
                 self.applied.append(statusentry(n, patchfn))
             except:
                 ctx = repo[cparents[0]]
                 repo.dirstate.rebuild(ctx.node(), ctx.manifest())
                 self.save_dirty()
                 self.ui.warn(_('refresh interrupted while patch was popped! '
                                '(revert --all, qpush to recover)\n'))
                 raise
         finally:
             wlock.release()
             self.removeundo(repo)
 
     def init(self, repo, create=False):
         if not create and os.path.isdir(self.path):
             raise util.Abort(_("patch queue directory already exists"))
         try:
             os.mkdir(self.path)
         except OSError, inst:
             if inst.errno != errno.EEXIST or not create:
                 raise
         if create:
             return self.qrepo(create=True)
 
     def unapplied(self, repo, patch=None):
         if patch and patch not in self.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         if not patch:
             start = self.series_end()
         else:
             start = self.series.index(patch) + 1
         unapplied = []
         for i in xrange(start, len(self.series)):
             pushable, reason = self.pushable(i)
             if pushable:
                 unapplied.append((i, self.series[i]))
             self.explain_pushable(i)
         return unapplied
 
     def qseries(self, repo, missing=None, start=0, length=None, status=None,
                 summary=False):
         def displayname(pfx, patchname, state):
             if pfx:
                 self.ui.write(pfx)
             if summary:
                 ph = patchheader(self.join(patchname), self.plainmode)
                 msg = ph.message and ph.message[0] or ''
                 if self.ui.formatted():
                     width = self.ui.termwidth() - len(pfx) - len(patchname) - 2
                     if width > 0:
                         msg = util.ellipsis(msg, width)
                     else:
                         msg = ''
                 self.ui.write(patchname, label='qseries.' + state)
                 self.ui.write(': ')
                 self.ui.write(msg, label='qseries.message.' + state)
             else:
                 self.ui.write(patchname, label='qseries.' + state)
             self.ui.write('\n')
 
         applied = set([p.name for p in self.applied])
         if length is None:
             length = len(self.series) - start
         if not missing:
             if self.ui.verbose:
                 idxwidth = len(str(start + length - 1))
             for i in xrange(start, start + length):
                 patch = self.series[i]
                 if patch in applied:
                     char, state = 'A', 'applied'
                 elif self.pushable(i)[0]:
                     char, state = 'U', 'unapplied'
                 else:
                     char, state = 'G', 'guarded'
                 pfx = ''
                 if self.ui.verbose:
                     pfx = '%*d %s ' % (idxwidth, i, char)
                 elif status and status != char:
                     continue
                 displayname(pfx, patch, state)
         else:
             msng_list = []
             for root, dirs, files in os.walk(self.path):
                 d = root[len(self.path) + 1:]
                 for f in files:
                     fl = os.path.join(d, f)
                     if (fl not in self.series and
                         fl not in (self.status_path, self.series_path,
                                    self.guards_path)
                         and not fl.startswith('.')):
                         msng_list.append(fl)
             for x in sorted(msng_list):
                 pfx = self.ui.verbose and ('D ') or ''
                 displayname(pfx, x, 'missing')
 
     def issaveline(self, l):
         if l.name == '.hg.patches.save.line':
             return True
 
     def qrepo(self, create=False):
         ui = self.ui.copy()
         ui.setconfig('paths', 'default', '', overlay=False)
         ui.setconfig('paths', 'default-push', '', overlay=False)
         if create or os.path.isdir(self.join(".hg")):
             return hg.repository(ui, path=self.path, create=create)
 
     def restore(self, repo, rev, delete=None, qupdate=None):
         desc = repo[rev].description().strip()
         lines = desc.splitlines()
         i = 0
         datastart = None
         series = []
         applied = []
         qpp = None
         for i, line in enumerate(lines):
             if line == 'Patch Data:':
                 datastart = i + 1
             elif line.startswith('Dirstate:'):
                 l = line.rstrip()
                 l = l[10:].split(' ')
                 qpp = [bin(x) for x in l]
             elif datastart is not None:
                 l = line.rstrip()
                 n, name = l.split(':', 1)
                 if n:
                     applied.append(statusentry(bin(n), name))
                 else:
                     series.append(l)
         if datastart is None:
             self.ui.warn(_("No saved patch data found\n"))
             return 1
         self.ui.warn(_("restoring status: %s\n") % lines[0])
         self.full_series = series
         self.applied = applied
         self.parse_series()
         self.series_dirty = 1
         self.applied_dirty = 1
         heads = repo.changelog.heads()
         if delete:
             if rev not in heads:
                 self.ui.warn(_("save entry has children, leaving it alone\n"))
             else:
                 self.ui.warn(_("removing save entry %s\n") % short(rev))
                 pp = repo.dirstate.parents()
                 if rev in pp:
                     update = True
                 else:
                     update = False
                 self.strip(repo, [rev], update=update, backup='strip')
         if qpp:
             self.ui.warn(_("saved queue repository parents: %s %s\n") %
                          (short(qpp[0]), short(qpp[1])))
             if qupdate:
                 self.ui.status(_("updating queue directory\n"))
                 r = self.qrepo()
                 if not r:
                     self.ui.warn(_("Unable to load queue repository\n"))
                     return 1
                 hg.clean(r, qpp[0])
 
     def save(self, repo, msg=None):
         if not self.applied:
             self.ui.warn(_("save: no patches applied, exiting\n"))
             return 1
         if self.issaveline(self.applied[-1]):
             self.ui.warn(_("status is already saved\n"))
             return 1
 
         if not msg:
             msg = _("hg patches saved state")
         else:
             msg = "hg patches: " + msg.rstrip('\r\n')
         r = self.qrepo()
         if r:
             pp = r.dirstate.parents()
             msg += "\nDirstate: %s %s" % (hex(pp[0]), hex(pp[1]))
         msg += "\n\nPatch Data:\n"
         msg += ''.join('%s\n' % x for x in self.applied)
         msg += ''.join(':%s\n' % x for x in self.full_series)
         n = repo.commit(msg, force=True)
         if not n:
             self.ui.warn(_("repo commit failed\n"))
             return 1
         self.applied.append(statusentry(n, '.hg.patches.save.line'))
         self.applied_dirty = 1
         self.removeundo(repo)
 
     def full_series_end(self):
         if self.applied:
             p = self.applied[-1].name
             end = self.find_series(p)
             if end is None:
                 return len(self.full_series)
             return end + 1
         return 0
 
     def series_end(self, all_patches=False):
         """If all_patches is False, return the index of the next pushable patch
         in the series, or the series length. If all_patches is True, return the
         index of the first patch past the last applied one.
         """
         end = 0
         def next(start):
             if all_patches or start >= len(self.series):
                 return start
             for i in xrange(start, len(self.series)):
                 p, reason = self.pushable(i)
                 if p:
                     break
                 self.explain_pushable(i)
             return i
         if self.applied:
             p = self.applied[-1].name
             try:
                 end = self.series.index(p)
             except ValueError:
                 return 0
             return next(end + 1)
         return next(end)
 
     def appliedname(self, index):
         pname = self.applied[index].name
         if not self.ui.verbose:
             p = pname
         else:
             p = str(self.series.index(pname)) + " " + pname
         return p
 
     def qimport(self, repo, files, patchname=None, rev=None, existing=None,
                 force=None, git=False):
         def checkseries(patchname):
             if patchname in self.series:
                 raise util.Abort(_('patch %s is already in the series file')
                                  % patchname)
         def checkfile(patchname):
             if not force and os.path.exists(self.join(patchname)):
                 raise util.Abort(_('patch "%s" already exists')
                                  % patchname)
 
         if rev:
             if files:
                 raise util.Abort(_('option "-r" not valid when importing '
                                    'files'))
             rev = cmdutil.revrange(repo, rev)
             rev.sort(reverse=True)
         if (len(files) > 1 or len(rev) > 1) and patchname:
             raise util.Abort(_('option "-n" not valid when importing multiple '
                                'patches'))
         if rev:
             # If mq patches are applied, we can only import revisions
             # that form a linear path to qbase.
             # Otherwise, they should form a linear path to a head.
             heads = repo.changelog.heads(repo.changelog.node(rev[-1]))
             if len(heads) > 1:
                 raise util.Abort(_('revision %d is the root of more than one '
                                    'branch') % rev[-1])
             if self.applied:
                 base = repo.changelog.node(rev[0])
                 if base in [n.node for n in self.applied]:
                     raise util.Abort(_('revision %d is already managed')
                                      % rev[0])
                 if heads != [self.applied[-1].node]:
                     raise util.Abort(_('revision %d is not the parent of '
                                        'the queue') % rev[0])
                 base = repo.changelog.rev(self.applied[0].node)
                 lastparent = repo.changelog.parentrevs(base)[0]
             else:
                 if heads != [repo.changelog.node(rev[0])]:
                     raise util.Abort(_('revision %d has unmanaged children')
                                      % rev[0])
                 lastparent = None
 
             diffopts = self.diffopts({'git': git})
             for r in rev:
                 p1, p2 = repo.changelog.parentrevs(r)
                 n = repo.changelog.node(r)
                 if p2 != nullrev:
                     raise util.Abort(_('cannot import merge revision %d') % r)
                 if lastparent and lastparent != r:
                     raise util.Abort(_('revision %d is not the parent of %d')
                                      % (r, lastparent))
                 lastparent = p1
 
                 if not patchname:
                     patchname = normname('%d.diff' % r)
                 self.check_reserved_name(patchname)
                 checkseries(patchname)
                 checkfile(patchname)
                 self.full_series.insert(0, patchname)
 
                 patchf = self.opener(patchname, "w")
                 cmdutil.export(repo, [n], fp=patchf, opts=diffopts)
                 patchf.close()
 
                 se = statusentry(n, patchname)
                 self.applied.insert(0, se)
 
                 self.added.append(patchname)
                 patchname = None
             self.parse_series()
             self.applied_dirty = 1
             self.series_dirty = True
 
         for i, filename in enumerate(files):
             if existing:
                 if filename == '-':
                     raise util.Abort(_('-e is incompatible with import from -'))
                 filename = normname(filename)
                 self.check_reserved_name(filename)
                 originpath = self.join(filename)
                 if not os.path.isfile(originpath):
                     raise util.Abort(_("patch %s does not exist") % filename)
 
                 if patchname:
                     self.check_reserved_name(patchname)
                     checkfile(patchname)
 
                     self.ui.write(_('renaming %s to %s\n')
                                         % (filename, patchname))
                     util.rename(originpath, self.join(patchname))
                 else:
                     patchname = filename
 
             else:
                 try:
                     if filename == '-':
                         if not patchname:
                             raise util.Abort(
                                 _('need --name to import a patch from -'))
                         text = sys.stdin.read()
                     else:
                         fp = url.open(self.ui, filename)
                         text = fp.read()
                         fp.close()
                 except (OSError, IOError):
                     raise util.Abort(_("unable to read file %s") % filename)
                 if not patchname:
                     patchname = normname(os.path.basename(filename))
                 self.check_reserved_name(patchname)
                 checkfile(patchname)
                 patchf = self.opener(patchname, "w")
                 patchf.write(text)
                 patchf.close()
             if not force:
                 checkseries(patchname)
             if patchname not in self.series:
                 index = self.full_series_end() + i
                 self.full_series[index:index] = [patchname]
             self.parse_series()
             self.series_dirty = True
             self.ui.warn(_("adding %s to series file\n") % patchname)
             self.added.append(patchname)
             patchname = None
 
         self.removeundo(repo)
 
 def delete(ui, repo, *patches, **opts):
     """remove patches from queue
 
     The patches must not be applied, and at least one patch is required. With
     -k/--keep, the patch files are preserved in the patch directory.
 
     To stop managing a patch and move it into permanent history,
     use the :hg:`qfinish` command."""
     q = repo.mq
     q.delete(repo, patches, opts)
     q.save_dirty()
     return 0
 
 def applied(ui, repo, patch=None, **opts):
     """print the patches already applied
 
     Returns 0 on success."""
 
     q = repo.mq
 
     if patch:
         if patch not in q.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         end = q.series.index(patch) + 1
     else:
         end = q.series_end(True)
 
     if opts.get('last') and not end:
         ui.write(_("no patches applied\n"))
         return 1
     elif opts.get('last') and end == 1:
         ui.write(_("only one patch applied\n"))
         return 1
     elif opts.get('last'):
         start = end - 2
         end = 1
     else:
         start = 0
 
     q.qseries(repo, length=end, start=start, status='A',
               summary=opts.get('summary'))
 
 
 def unapplied(ui, repo, patch=None, **opts):
     """print the patches not yet applied
 
     Returns 0 on success."""
 
     q = repo.mq
     if patch:
         if patch not in q.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         start = q.series.index(patch) + 1
     else:
         start = q.series_end(True)
 
     if start == len(q.series) and opts.get('first'):
         ui.write(_("all patches applied\n"))
         return 1
 
     length = opts.get('first') and 1 or None
     q.qseries(repo, start=start, length=length, status='U',
               summary=opts.get('summary'))
 
 def qimport(ui, repo, *filename, **opts):
     """import a patch
 
     The patch is inserted into the series after the last applied
     patch. If no patches have been applied, qimport prepends the patch
     to the series.
 
     The patch will have the same name as its source file unless you
     give it a new one with -n/--name.
 
     You can register an existing patch inside the patch directory with
     the -e/--existing flag.
 
     With -f/--force, an existing patch of the same name will be
     overwritten.
 
     An existing changeset may be placed under mq control with -r/--rev
     (e.g. qimport --rev tip -n patch will place tip under mq control).
     With -g/--git, patches imported with --rev will use the git diff
     format. See the diffs help topic for information on why this is
     important for preserving rename/copy information and permission
     changes. Use :hg:`qfinish` to remove changesets from mq control.
 
     To import a patch from standard input, pass - as the patch file.
     When importing from standard input, a patch name must be specified
     using the --name flag.
 
     To import an existing patch while renaming it::
 
       hg qimport -e existing-patch -n new-name
 
     Returns 0 if import succeeded.
     """
     q = repo.mq
     try:
         q.qimport(repo, filename, patchname=opts.get('name'),
               existing=opts.get('existing'), force=opts.get('force'),
               rev=opts.get('rev'), git=opts.get('git'))
     finally:
         q.save_dirty()
 
     if opts.get('push') and not opts.get('rev'):
         return q.push(repo, None)
     return 0
 
 def qinit(ui, repo, create):
     """initialize a new queue repository
 
     This command also creates a series file for ordering patches, and
     an mq-specific .hgignore file in the queue repository, to exclude
     the status and guards files (these contain mostly transient state).
 
     Returns 0 if initialization succeeded."""
     q = repo.mq
     r = q.init(repo, create)
     q.save_dirty()
     if r:
         if not os.path.exists(r.wjoin('.hgignore')):
             fp = r.wopener('.hgignore', 'w')
             fp.write('^\\.hg\n')
             fp.write('^\\.mq\n')
             fp.write('syntax: glob\n')
             fp.write('status\n')
             fp.write('guards\n')
             fp.close()
         if not os.path.exists(r.wjoin('series')):
             r.wopener('series', 'w').close()
         r[None].add(['.hgignore', 'series'])
         commands.add(ui, r)
     return 0
 
 def init(ui, repo, **opts):
     """init a new queue repository (DEPRECATED)
 
     The queue repository is unversioned by default. If
     -c/--create-repo is specified, qinit will create a separate nested
     repository for patches (qinit -c may also be run later to convert
     an unversioned patch repository into a versioned one). You can use
     qcommit to commit changes to this queue repository.
 
     This command is deprecated. Without -c, it's implied by other relevant
     commands. With -c, use :hg:`init --mq` instead."""
     return qinit(ui, repo, create=opts.get('create_repo'))
 
 def clone(ui, source, dest=None, **opts):
     '''clone main and patch repository at same time
 
     If source is local, destination will have no patches applied. If
     source is remote, this command can not check if patches are
     applied in source, so cannot guarantee that patches are not
     applied in destination. If you clone remote repository, be sure
     before that it has no patches applied.
 
     Source patch repository is looked for in <src>/.hg/patches by
     default. Use -p <url> to change.
 
     The patch directory must be a nested Mercurial repository, as
     would be created by :hg:`init --mq`.
 
     Return 0 on success.
     '''
     def patchdir(repo):
         url = repo.url()
         if url.endswith('/'):
             url = url[:-1]
         return url + '/.hg/patches'
     if dest is None:
         dest = hg.defaultdest(source)
     sr = hg.repository(hg.remoteui(ui, opts), ui.expandpath(source))
     if opts.get('patches'):
         patchespath = ui.expandpath(opts.get('patches'))
     else:
         patchespath = patchdir(sr)
     try:
         hg.repository(ui, patchespath)
     except error.RepoError:
         raise util.Abort(_('versioned patch repository not found'
                            ' (see init --mq)'))
     qbase, destrev = None, None
     if sr.local():
         if sr.mq.applied:
             qbase = sr.mq.applied[0].node
             if not hg.islocal(dest):
                 heads = set(sr.heads())
                 destrev = list(heads.difference(sr.heads(qbase)))
                 destrev.append(sr.changelog.parents(qbase)[0])
     elif sr.capable('lookup'):
         try:
             qbase = sr.lookup('qbase')
         except error.RepoError:
             pass
     ui.note(_('cloning main repository\n'))
     sr, dr = hg.clone(ui, sr.url(), dest,
                       pull=opts.get('pull'),
                       rev=destrev,
                       update=False,
                       stream=opts.get('uncompressed'))
     ui.note(_('cloning patch repository\n'))
     hg.clone(ui, opts.get('patches') or patchdir(sr), patchdir(dr),
              pull=opts.get('pull'), update=not opts.get('noupdate'),
              stream=opts.get('uncompressed'))
     if dr.local():
         if qbase:
             ui.note(_('stripping applied patches from destination '
                       'repository\n'))
             dr.mq.strip(dr, [qbase], update=False, backup=None)
         if not opts.get('noupdate'):
             ui.note(_('updating destination repository\n'))
             hg.update(dr, dr.changelog.tip())
 
 def commit(ui, repo, *pats, **opts):
     """commit changes in the queue repository (DEPRECATED)
 
     This command is deprecated; use :hg:`commit --mq` instead."""
     q = repo.mq
     r = q.qrepo()
     if not r:
         raise util.Abort('no queue repository')
     commands.commit(r.ui, r, *pats, **opts)
 
 def series(ui, repo, **opts):
     """print the entire series file
 
     Returns 0 on success."""
     repo.mq.qseries(repo, missing=opts.get('missing'), summary=opts.get('summary'))
     return 0
 
 def top(ui, repo, **opts):
     """print the name of the current patch
 
     Returns 0 on success."""
     q = repo.mq
     t = q.applied and q.series_end(True) or 0
     if t:
         q.qseries(repo, start=t - 1, length=1, status='A',
                   summary=opts.get('summary'))
     else:
         ui.write(_("no patches applied\n"))
         return 1
 
 def next(ui, repo, **opts):
     """print the name of the next patch
 
     Returns 0 on success."""
     q = repo.mq
     end = q.series_end()
     if end == len(q.series):
         ui.write(_("all patches applied\n"))
         return 1
     q.qseries(repo, start=end, length=1, summary=opts.get('summary'))
 
 def prev(ui, repo, **opts):
     """print the name of the previous patch
 
     Returns 0 on success."""
     q = repo.mq
     l = len(q.applied)
     if l == 1:
         ui.write(_("only one patch applied\n"))
         return 1
     if not l:
         ui.write(_("no patches applied\n"))
         return 1
     q.qseries(repo, start=l - 2, length=1, status='A',
               summary=opts.get('summary'))
 
 def setupheaderopts(ui, opts):
     if not opts.get('user') and opts.get('currentuser'):
         opts['user'] = ui.username()
     if not opts.get('date') and opts.get('currentdate'):
         opts['date'] = "%d %d" % util.makedate()
 
 def new(ui, repo, patch, *args, **opts):
     """create a new patch
 
     qnew creates a new patch on top of the currently-applied patch (if
     any). The patch will be initialized with any outstanding changes
     in the working directory. You may also use -I/--include,
     -X/--exclude, and/or a list of files after the patch name to add
     only changes to matching files to the new patch, leaving the rest
     as uncommitted modifications.
 
     -u/--user and -d/--date can be used to set the (given) user and
     date, respectively. -U/--currentuser and -D/--currentdate set user
     to current user and date to current date.
 
     -e/--edit, -m/--message or -l/--logfile set the patch header as
     well as the commit message. If none is specified, the header is
     empty and the commit message is '[mq]: PATCH'.
 
     Use the -g/--git option to keep the patch in the git extended diff
     format. Read the diffs help topic for more information on why this
     is important for preserving permission changes and copy/rename
     information.
 
     Returns 0 on successful creation of a new patch.
     """
     msg = cmdutil.logmessage(opts)
     def getmsg():
         return ui.edit(msg, opts.get('user') or ui.username())
     q = repo.mq
     opts['msg'] = msg
     if opts.get('edit'):
         opts['msg'] = getmsg
     else:
         opts['msg'] = msg
     setupheaderopts(ui, opts)
     q.new(repo, patch, *args, **opts)
     q.save_dirty()
     return 0
 
 def refresh(ui, repo, *pats, **opts):
     """update the current patch
 
     If any file patterns are provided, the refreshed patch will
     contain only the modifications that match those patterns; the
     remaining modifications will remain in the working directory.
 
     If -s/--short is specified, files currently included in the patch
     will be refreshed just like matched files and remain in the patch.
 
     If -e/--edit is specified, Mercurial will start your configured editor for
     you to enter a message. In case qrefresh fails, you will find a backup of
     your message in ``.hg/last-message.txt``.
 
     hg add/remove/copy/rename work as usual, though you might want to
     use git-style patches (-g/--git or [diff] git=1) to track copies
     and renames. See the diffs help topic for more information on the
     git diff format.
 
     Returns 0 on success.
     """
     q = repo.mq
     message = cmdutil.logmessage(opts)
     if opts.get('edit'):
         if not q.applied:
             ui.write(_("no patches applied\n"))
             return 1
         if message:
             raise util.Abort(_('option "-e" incompatible with "-m" or "-l"'))
         patch = q.applied[-1].name
         ph = patchheader(q.join(patch), q.plainmode)
         message = ui.edit('\n'.join(ph.message), ph.user or ui.username())
         # We don't want to lose the patch message if qrefresh fails (issue2062)
         msgfile = repo.opener('last-message.txt', 'wb')
         msgfile.write(message)
         msgfile.close()
     setupheaderopts(ui, opts)
     ret = q.refresh(repo, pats, msg=message, **opts)
     q.save_dirty()
     return ret
 
 def diff(ui, repo, *pats, **opts):
     """diff of the current patch and subsequent modifications
 
     Shows a diff which includes the current patch as well as any
     changes which have been made in the working directory since the
     last refresh (thus showing what the current patch would become
     after a qrefresh).
 
     Use :hg:`diff` if you only want to see the changes made since the
     last qrefresh, or :hg:`export qtip` if you want to see changes
     made by the current patch without including changes made since the
     qrefresh.
 
     Returns 0 on success.
     """
     repo.mq.diff(repo, pats, opts)
     return 0
 
 def fold(ui, repo, *files, **opts):
     """fold the named patches into the current patch
 
     Patches must not yet be applied. Each patch will be successively
     applied to the current patch in the order given. If all the
     patches apply successfully, the current patch will be refreshed
     with the new cumulative patch, and the folded patches will be
     deleted. With -k/--keep, the folded patch files will not be
     removed afterwards.
 
     The header for each folded patch will be concatenated with the
     current patch header, separated by a line of ``* * *``.
 
     Returns 0 on success."""
 
     q = repo.mq
 
     if not files:
         raise util.Abort(_('qfold requires at least one patch name'))
     if not q.check_toppatch(repo)[0]:
         raise util.Abort(_('no patches applied'))
     q.check_localchanges(repo)
 
     message = cmdutil.logmessage(opts)
     if opts.get('edit'):
         if message:
             raise util.Abort(_('option "-e" incompatible with "-m" or "-l"'))
 
     parent = q.lookup('qtip')
     patches = []
     messages = []
     for f in files:
         p = q.lookup(f)
         if p in patches or p == parent:
             ui.warn(_('Skipping already folded patch %s\n') % p)
         if q.isapplied(p):
             raise util.Abort(_('qfold cannot fold already applied patch %s') % p)
         patches.append(p)
 
     for p in patches:
         if not message:
             ph = patchheader(q.join(p), q.plainmode)
             if ph.message:
                 messages.append(ph.message)
         pf = q.join(p)
         (patchsuccess, files, fuzz) = q.patch(repo, pf)
         if not patchsuccess:
             raise util.Abort(_('error folding patch %s') % p)
         cmdutil.updatedir(ui, repo, files)
 
     if not message:
         ph = patchheader(q.join(parent), q.plainmode)
         message, user = ph.message, ph.user
         for msg in messages:
             message.append('* * *')
             message.extend(msg)
         message = '\n'.join(message)
 
     if opts.get('edit'):
         message = ui.edit(message, user or ui.username())
 
     diffopts = q.patchopts(q.diffopts(), *patches)
     q.refresh(repo, msg=message, git=diffopts.git)
     q.delete(repo, patches, opts)
     q.save_dirty()
 
 def goto(ui, repo, patch, **opts):
     '''push or pop patches until named patch is at top of stack
 
     Returns 0 on success.'''
     q = repo.mq
     patch = q.lookup(patch)
     if q.isapplied(patch):
         ret = q.pop(repo, patch, force=opts.get('force'))
     else:
         ret = q.push(repo, patch, force=opts.get('force'))
     q.save_dirty()
     return ret
 
 def guard(ui, repo, *args, **opts):
     '''set or print guards for a patch
 
     Guards control whether a patch can be pushed. A patch with no
     guards is always pushed. A patch with a positive guard ("+foo") is
     pushed only if the :hg:`qselect` command has activated it. A patch with
     a negative guard ("-foo") is never pushed if the :hg:`qselect` command
     has activated it.
 
     With no arguments, print the currently active guards.
     With arguments, set guards for the named patch.
 
     .. note::
        Specifying negative guards now requires '--'.
 
     To set guards on another patch::
 
       hg qguard other.patch -- +2.6.17 -stable
 
     Returns 0 on success.
     '''
     def status(idx):
         guards = q.series_guards[idx] or ['unguarded']
         if q.series[idx] in applied:
             state = 'applied'
         elif q.pushable(idx)[0]:
             state = 'unapplied'
         else:
             state = 'guarded'
         label = 'qguard.patch qguard.%s qseries.%s' % (state, state)
         ui.write('%s: ' % ui.label(q.series[idx], label))
 
         for i, guard in enumerate(guards):
             if guard.startswith('+'):
                 ui.write(guard, label='qguard.positive')
             elif guard.startswith('-'):
                 ui.write(guard, label='qguard.negative')
             else:
                 ui.write(guard, label='qguard.unguarded')
             if i != len(guards) - 1:
                 ui.write(' ')
         ui.write('\n')
     q = repo.mq
     applied = set(p.name for p in q.applied)
     patch = None
     args = list(args)
     if opts.get('list'):
         if args or opts.get('none'):
             raise util.Abort(_('cannot mix -l/--list with options or arguments'))
         for i in xrange(len(q.series)):
             status(i)
         return
     if not args or args[0][0:1] in '-+':
         if not q.applied:
             raise util.Abort(_('no patches applied'))
         patch = q.applied[-1].name
     if patch is None and args[0][0:1] not in '-+':
         patch = args.pop(0)
     if patch is None:
         raise util.Abort(_('no patch to work with'))
     if args or opts.get('none'):
         idx = q.find_series(patch)
         if idx is None:
             raise util.Abort(_('no patch named %s') % patch)
         q.set_guards(idx, args)
         q.save_dirty()
     else:
         status(q.series.index(q.lookup(patch)))
 
 def header(ui, repo, patch=None):
     """print the header of the topmost or specified patch
 
     Returns 0 on success."""
     q = repo.mq
 
     if patch:
         patch = q.lookup(patch)
     else:
         if not q.applied:
             ui.write(_('no patches applied\n'))
             return 1
         patch = q.lookup('qtip')
     ph = patchheader(q.join(patch), q.plainmode)
 
     ui.write('\n'.join(ph.message) + '\n')
 
 def lastsavename(path):
     (directory, base) = os.path.split(path)
     names = os.listdir(directory)
     namere = re.compile("%s.([0-9]+)" % base)
     maxindex = None
     maxname = None
     for f in names:
         m = namere.match(f)
         if m:
             index = int(m.group(1))
             if maxindex is None or index > maxindex:
                 maxindex = index
                 maxname = f
     if maxname:
         return (os.path.join(directory, maxname), maxindex)
     return (None, None)
 
 def savename(path):
     (last, index) = lastsavename(path)
     if last is None:
         index = 0
     newpath = path + ".%d" % (index + 1)
     return newpath
 
 def push(ui, repo, patch=None, **opts):
     """push the next patch onto the stack
 
     When -f/--force is applied, all local changes in patched files
     will be lost.
 
     Return 0 on success.
     """
     q = repo.mq
     mergeq = None
 
     if opts.get('merge'):
         if opts.get('name'):
             newpath = repo.join(opts.get('name'))
         else:
             newpath, i = lastsavename(q.path)
         if not newpath:
             ui.warn(_("no saved queues found, please use -n\n"))
             return 1
         mergeq = queue(ui, repo.join(""), newpath)
         ui.warn(_("merging with queue at: %s\n") % mergeq.path)
     ret = q.push(repo, patch, force=opts.get('force'), list=opts.get('list'),
                  mergeq=mergeq, all=opts.get('all'), move=opts.get('move'),
                  exact=opts.get('exact'))
     return ret
 
 def pop(ui, repo, patch=None, **opts):
     """pop the current patch off the stack
 
     By default, pops off the top of the patch stack. If given a patch
     name, keeps popping off patches until the named patch is at the
     top of the stack.
 
     Return 0 on success.
     """
     localupdate = True
     if opts.get('name'):
         q = queue(ui, repo.join(""), repo.join(opts.get('name')))
         ui.warn(_('using patch queue: %s\n') % q.path)
         localupdate = False
     else:
         q = repo.mq
     ret = q.pop(repo, patch, force=opts.get('force'), update=localupdate,
                 all=opts.get('all'))
     q.save_dirty()
     return ret
 
 def rename(ui, repo, patch, name=None, **opts):
     """rename a patch
 
     With one argument, renames the current patch to PATCH1.
     With two arguments, renames PATCH1 to PATCH2.
 
     Returns 0 on success."""
 
     q = repo.mq
 
     if not name:
         name = patch
         patch = None
 
     if patch:
         patch = q.lookup(patch)
     else:
         if not q.applied:
             ui.write(_('no patches applied\n'))
             return
         patch = q.lookup('qtip')
     absdest = q.join(name)
     if os.path.isdir(absdest):
         name = normname(os.path.join(name, os.path.basename(patch)))
         absdest = q.join(name)
     if os.path.exists(absdest):
         raise util.Abort(_('%s already exists') % absdest)
 
     if name in q.series:
         raise util.Abort(
             _('A patch named %s already exists in the series file') % name)
 
     ui.note(_('renaming %s to %s\n') % (patch, name))
     i = q.find_series(patch)
     guards = q.guard_re.findall(q.full_series[i])
     q.full_series[i] = name + ''.join([' #' + g for g in guards])
     q.parse_series()
     q.series_dirty = 1
 
     info = q.isapplied(patch)
     if info:
         q.applied[info[0]] = statusentry(info[1], name)
     q.applied_dirty = 1
 
     destdir = os.path.dirname(absdest)
     if not os.path.isdir(destdir):
         os.makedirs(destdir)
     util.rename(q.join(patch), absdest)
     r = q.qrepo()
     if r and patch in r.dirstate:
         wctx = r[None]
         wlock = r.wlock()
         try:
             if r.dirstate[patch] == 'a':
                 r.dirstate.forget(patch)
                 r.dirstate.add(name)
             else:
                 if r.dirstate[name] == 'r':
                     wctx.undelete([name])
                 wctx.copy(patch, name)
                 wctx.remove([patch], False)
         finally:
             wlock.release()
 
     q.save_dirty()
 
 def restore(ui, repo, rev, **opts):
     """restore the queue state saved by a revision (DEPRECATED)
 
     This command is deprecated, use :hg:`rebase` instead."""
     rev = repo.lookup(rev)
     q = repo.mq
     q.restore(repo, rev, delete=opts.get('delete'),
               qupdate=opts.get('update'))
     q.save_dirty()
     return 0
 
 def save(ui, repo, **opts):
     """save current queue state (DEPRECATED)
 
     This command is deprecated, use :hg:`rebase` instead."""
     q = repo.mq
     message = cmdutil.logmessage(opts)
     ret = q.save(repo, msg=message)
     if ret:
         return ret
     q.save_dirty()
     if opts.get('copy'):
         path = q.path
         if opts.get('name'):
             newpath = os.path.join(q.basepath, opts.get('name'))
             if os.path.exists(newpath):
                 if not os.path.isdir(newpath):
                     raise util.Abort(_('destination %s exists and is not '
                                        'a directory') % newpath)
                 if not opts.get('force'):
                     raise util.Abort(_('destination %s exists, '
                                        'use -f to force') % newpath)
         else:
             newpath = savename(path)
         ui.warn(_("copy %s to %s\n") % (path, newpath))
         util.copyfiles(path, newpath)
     if opts.get('empty'):
         try:
             os.unlink(q.join(q.status_path))
         except:
             pass
     return 0
 
 def strip(ui, repo, *revs, **opts):
     """strip changesets and all their descendants from the repository
 
     The strip command removes the specified changesets and all their
     descendants. If the working directory has uncommitted changes, the
     operation is aborted unless the --force flag is supplied, in which
     case changes will be discarded.
 
     If a parent of the working directory is stripped, then the working
     directory will automatically be updated to the most recent
     available ancestor of the stripped parent after the operation
     completes.
 
     Any stripped changesets are stored in ``.hg/strip-backup`` as a
     bundle (see :hg:`help bundle` and :hg:`help unbundle`). They can
     be restored by running :hg:`unbundle .hg/strip-backup/BUNDLE`,
     where BUNDLE is the bundle file created by the strip. Note that
     the local revision numbers will in general be different after the
     restore.
 
     Use the --no-backup option to discard the backup bundle once the
     operation completes.
 
     Return 0 on success.
     """
     backup = 'all'
     if opts.get('backup'):
         backup = 'strip'
     elif opts.get('no_backup') or opts.get('nobackup'):
         backup = 'none'
 
     cl = repo.changelog
     revs = set(cmdutil.revrange(repo, revs))
     if not revs:
         raise util.Abort(_('empty revision set'))
 
     descendants = set(cl.descendants(*revs))
     strippedrevs = revs.union(descendants)
     roots = revs.difference(descendants)
 
     update = False
     # if one of the wdir parent is stripped we'll need
     # to update away to an earlier revision
     for p in repo.dirstate.parents():
         if p != nullid and cl.rev(p) in strippedrevs:
             update = True
             break
 
     rootnodes = set(cl.node(r) for r in roots)
 
     q = repo.mq
     if q.applied:
         # refresh queue state if we're about to strip
         # applied patches
         if cl.rev(repo.lookup('qtip')) in strippedrevs:
             q.applied_dirty = True
             start = 0
             end = len(q.applied)
             for i, statusentry in enumerate(q.applied):
                 if statusentry.node in rootnodes:
                     # if one of the stripped roots is an applied
                     # patch, only part of the queue is stripped
                     start = i
                     break
             del q.applied[start:end]
             q.save_dirty()
 
     revs = list(rootnodes)
     if update and opts.get('keep'):
         wlock = repo.wlock()
         try:
             urev = repo.mq.qparents(repo, revs[0])
             repo.dirstate.rebuild(urev, repo[urev].manifest())
             repo.dirstate.write()
             update = False
         finally:
             wlock.release()
 
     repo.mq.strip(repo, revs, backup=backup, update=update,
                   force=opts.get('force'))
     return 0
 
 def select(ui, repo, *args, **opts):
     '''set or print guarded patches to push
 
     Use the :hg:`qguard` command to set or print guards on patch, then use
     qselect to tell mq which guards to use. A patch will be pushed if
     it has no guards or any positive guards match the currently
     selected guard, but will not be pushed if any negative guards
     match the current guard. For example::
 
         qguard foo.patch -- -stable    (negative guard)
         qguard bar.patch    +stable    (positive guard)
         qselect stable
 
     This activates the "stable" guard. mq will skip foo.patch (because
     it has a negative match) but push bar.patch (because it has a
     positive match).
 
     With no arguments, prints the currently active guards.
     With one argument, sets the active guard.
 
     Use -n/--none to deactivate guards (no other arguments needed).
     When no guards are active, patches with positive guards are
     skipped and patches with negative guards are pushed.
 
     qselect can change the guards on applied patches. It does not pop
     guarded patches by default. Use --pop to pop back to the last
     applied patch that is not guarded. Use --reapply (which implies
     --pop) to push back to the current patch afterwards, but skip
     guarded patches.
 
     Use -s/--series to print a list of all guards in the series file
     (no other arguments needed). Use -v for more information.
 
     Returns 0 on success.'''
 
     q = repo.mq
     guards = q.active()
     if args or opts.get('none'):
         old_unapplied = q.unapplied(repo)
         old_guarded = [i for i in xrange(len(q.applied)) if
                        not q.pushable(i)[0]]
         q.set_active(args)
         q.save_dirty()
         if not args:
             ui.status(_('guards deactivated\n'))
         if not opts.get('pop') and not opts.get('reapply'):
             unapplied = q.unapplied(repo)
             guarded = [i for i in xrange(len(q.applied))
                        if not q.pushable(i)[0]]
             if len(unapplied) != len(old_unapplied):
                 ui.status(_('number of unguarded, unapplied patches has '
                             'changed from %d to %d\n') %
                           (len(old_unapplied), len(unapplied)))
             if len(guarded) != len(old_guarded):
                 ui.status(_('number of guarded, applied patches has changed '
                             'from %d to %d\n') %
                           (len(old_guarded), len(guarded)))
     elif opts.get('series'):
         guards = {}
         noguards = 0
         for gs in q.series_guards:
             if not gs:
                 noguards += 1
             for g in gs:
                 guards.setdefault(g, 0)
                 guards[g] += 1
         if ui.verbose:
             guards['NONE'] = noguards
         guards = guards.items()
         guards.sort(key=lambda x: x[0][1:])
         if guards:
             ui.note(_('guards in series file:\n'))
             for guard, count in guards:
                 ui.note('%2d  ' % count)
                 ui.write(guard, '\n')
         else:
             ui.note(_('no guards in series file\n'))
     else:
         if guards:
             ui.note(_('active guards:\n'))
             for g in guards:
                 ui.write(g, '\n')
         else:
             ui.write(_('no active guards\n'))
     reapply = opts.get('reapply') and q.applied and q.appliedname(-1)
     popped = False
     if opts.get('pop') or opts.get('reapply'):
         for i in xrange(len(q.applied)):
             pushable, reason = q.pushable(i)
             if not pushable:
                 ui.status(_('popping guarded patches\n'))
                 popped = True
                 if i == 0:
                     q.pop(repo, all=True)
                 else:
                     q.pop(repo, i - 1)
                 break
     if popped:
         try:
             if reapply:
                 ui.status(_('reapplying unguarded patches\n'))
                 q.push(repo, reapply)
         finally:
             q.save_dirty()
 
 def finish(ui, repo, *revrange, **opts):
     """move applied patches into repository history
 
     Finishes the specified revisions (corresponding to applied
     patches) by moving them out of mq control into regular repository
     history.
 
     Accepts a revision range or the -a/--applied option. If --applied
     is specified, all applied mq revisions are removed from mq
     control. Otherwise, the given revisions must be at the base of the
     stack of applied patches.
 
     This can be especially useful if your changes have been applied to
     an upstream repository, or if you are about to push your changes
     to upstream.
 
     Returns 0 on success.
     """
     if not opts.get('applied') and not revrange:
         raise util.Abort(_('no revisions specified'))
     elif opts.get('applied'):
         revrange = ('qbase::qtip',) + revrange
 
     q = repo.mq
     if not q.applied:
         ui.status(_('no patches applied\n'))
         return 0
 
     revs = cmdutil.revrange(repo, revrange)
     q.finish(repo, revs)
     q.save_dirty()
     return 0
 
 def qqueue(ui, repo, name=None, **opts):
     '''manage multiple patch queues
 
     Supports switching between different patch queues, as well as creating
     new patch queues and deleting existing ones.
 
     Omitting a queue name or specifying -l/--list will show you the registered
     queues - by default the "normal" patches queue is registered. The currently
     active queue will be marked with "(active)".
 
     To create a new queue, use -c/--create. The queue is automatically made
     active, except in the case where there are applied patches from the
     currently active queue in the repository. Then the queue will only be
     created and switching will fail.
 
     To delete an existing queue, use --delete. You cannot delete the currently
     active queue.
 
     Returns 0 on success.
     '''
 
     q = repo.mq
 
     _defaultqueue = 'patches'
     _allqueues = 'patches.queues'
     _activequeue = 'patches.queue'
 
     def _getcurrent():
         cur = os.path.basename(q.path)
         if cur.startswith('patches-'):
             cur = cur[8:]
         return cur
 
     def _noqueues():
         try:
             fh = repo.opener(_allqueues, 'r')
             fh.close()
         except IOError:
             return True
 
         return False
 
     def _getqueues():
         current = _getcurrent()
 
         try:
             fh = repo.opener(_allqueues, 'r')
             queues = [queue.strip() for queue in fh if queue.strip()]
             fh.close()
             if current not in queues:
                 queues.append(current)
         except IOError:
             queues = [_defaultqueue]
 
         return sorted(queues)
 
     def _setactive(name):
         if q.applied:
             raise util.Abort(_('patches applied - cannot set new queue active'))
         _setactivenocheck(name)
 
     def _setactivenocheck(name):
         fh = repo.opener(_activequeue, 'w')
         if name != 'patches':
             fh.write(name)
         fh.close()
 
     def _addqueue(name):
         fh = repo.opener(_allqueues, 'a')
         fh.write('%s\n' % (name,))
         fh.close()
 
     def _queuedir(name):
         if name == 'patches':
             return repo.join('patches')
         else:
             return repo.join('patches-' + name)
 
     def _validname(name):
         for n in name:
             if n in ':\\/.':
                 return False
         return True
 
     def _delete(name):
         if name not in existing:
             raise util.Abort(_('cannot delete queue that does not exist'))
 
         current = _getcurrent()
 
         if name == current:
             raise util.Abort(_('cannot delete currently active queue'))
 
         fh = repo.opener('patches.queues.new', 'w')
         for queue in existing:
             if queue == name:
                 continue
             fh.write('%s\n' % (queue,))
         fh.close()
         util.rename(repo.join('patches.queues.new'), repo.join(_allqueues))
 
     if not name or opts.get('list'):
         current = _getcurrent()
         for queue in _getqueues():
             ui.write('%s' % (queue,))
             if queue == current and not ui.quiet:
                 ui.write(_(' (active)\n'))
             else:
                 ui.write('\n')
         return
 
     if not _validname(name):
         raise util.Abort(
                 _('invalid queue name, may not contain the characters ":\\/."'))
 
     existing = _getqueues()
 
     if opts.get('create'):
         if name in existing:
             raise util.Abort(_('queue "%s" already exists') % name)
         if _noqueues():
             _addqueue(_defaultqueue)
         _addqueue(name)
         _setactive(name)
     elif opts.get('rename'):
         current = _getcurrent()
         if name == current:
             raise util.Abort(_('can\'t rename "%s" to its current name') % name)
         if name in existing:
             raise util.Abort(_('queue "%s" already exists') % name)
 
         olddir = _queuedir(current)
         newdir = _queuedir(name)
 
         if os.path.exists(newdir):
             raise util.Abort(_('non-queue directory "%s" already exists') %
                     newdir)
 
         fh = repo.opener('patches.queues.new', 'w')
         for queue in existing:
             if queue == current:
                 fh.write('%s\n' % (name,))
                 if os.path.exists(olddir):
                     util.rename(olddir, newdir)
             else:
                 fh.write('%s\n' % (queue,))
         fh.close()
         util.rename(repo.join('patches.queues.new'), repo.join(_allqueues))
         _setactivenocheck(name)
     elif opts.get('delete'):
         _delete(name)
     elif opts.get('purge'):
         if name in existing:
             _delete(name)
         qdir = _queuedir(name)
         if os.path.exists(qdir):
             shutil.rmtree(qdir)
     else:
         if name not in existing:
             raise util.Abort(_('use --create to create a new queue'))
         _setactive(name)
 
 def reposetup(ui, repo):
     class mqrepo(repo.__class__):
         @util.propertycache
         def mq(self):
             return queue(self.ui, self.join(""))
 
         def abort_if_wdir_patched(self, errmsg, force=False):
             if self.mq.applied and not force:
                 parents = self.dirstate.parents()
                 patches = [s.node for s in self.mq.applied]
                 if parents[0] in patches or parents[1] in patches:
                     raise util.Abort(errmsg)
 
         def commit(self, text="", user=None, date=None, match=None,
                    force=False, editor=False, extra={}):
             self.abort_if_wdir_patched(
                 _('cannot commit over an applied mq patch'),
                 force)
 
             return super(mqrepo, self).commit(text, user, date, match, force,
                                               editor, extra)
 
         def checkpush(self, force, revs):
             if self.mq.applied and not force:
                 haspatches = True
                 if revs:
                     # Assume applied patches have no non-patch descendants
                     # and are not on remote already. If they appear in the
                     # set of resolved 'revs', bail out.
                     applied = set(e.node for e in self.mq.applied)
                     haspatches = bool([n for n in revs if n in applied])
                 if haspatches:
                     raise util.Abort(_('source has mq patches applied'))
             super(mqrepo, self).checkpush(force, revs)
 
         def _findtags(self):
             '''augment tags from base class with patch tags'''
             result = super(mqrepo, self)._findtags()
 
             q = self.mq
             if not q.applied:
                 return result
 
             mqtags = [(patch.node, patch.name) for patch in q.applied]
 
             try:
                 self.changelog.rev(mqtags[-1][0])
             except error.RepoLookupError:
                 self.ui.warn(_('mq status file refers to unknown node %s\n')
                              % short(mqtags[-1][0]))
                 return result
 
             mqtags.append((mqtags[-1][0], 'qtip'))
             mqtags.append((mqtags[0][0], 'qbase'))
             mqtags.append((self.changelog.parents(mqtags[0][0])[0], 'qparent'))
             tags = result[0]
             for patch in mqtags:
                 if patch[1] in tags:
                     self.ui.warn(_('Tag %s overrides mq patch of the same name\n')
                                  % patch[1])
                 else:
                     tags[patch[1]] = patch[0]
 
             return result
 
         def _branchtags(self, partial, lrev):
             q = self.mq
             if not q.applied:
                 return super(mqrepo, self)._branchtags(partial, lrev)
 
             cl = self.changelog
             qbasenode = q.applied[0].node
             try:
                 qbase = cl.rev(qbasenode)
             except error.LookupError:
                 self.ui.warn(_('mq status file refers to unknown node %s\n')
                              % short(qbasenode))
                 return super(mqrepo, self)._branchtags(partial, lrev)
 
             start = lrev + 1
             if start < qbase:
                 # update the cache (excluding the patches) and save it
                 ctxgen = (self[r] for r in xrange(lrev + 1, qbase))
                 self._updatebranchcache(partial, ctxgen)
                 self._writebranchcache(partial, cl.node(qbase - 1), qbase - 1)
                 start = qbase
             # if start = qbase, the cache is as updated as it should be.
             # if start > qbase, the cache includes (part of) the patches.
             # we might as well use it, but we won't save it.
 
             # update the cache up to the tip
             ctxgen = (self[r] for r in xrange(start, len(cl)))
             self._updatebranchcache(partial, ctxgen)
 
             return partial
 
     if repo.local():
         repo.__class__ = mqrepo
 
 def mqimport(orig, ui, repo, *args, **kwargs):
     if (hasattr(repo, 'abort_if_wdir_patched')
         and not kwargs.get('no_commit', False)):
         repo.abort_if_wdir_patched(_('cannot import over an applied patch'),
                                    kwargs.get('force'))
     return orig(ui, repo, *args, **kwargs)
 
 def mqinit(orig, ui, *args, **kwargs):
     mq = kwargs.pop('mq', None)
 
     if not mq:
         return orig(ui, *args, **kwargs)
 
     if args:
         repopath = args[0]
         if not hg.islocal(repopath):
             raise util.Abort(_('only a local queue repository '
                                'may be initialized'))
     else:
         repopath = cmdutil.findrepo(os.getcwd())
         if not repopath:
             raise util.Abort(_('there is no Mercurial repository here '
                                '(.hg not found)'))
     repo = hg.repository(ui, repopath)
     return qinit(ui, repo, True)
 
 def mqcommand(orig, ui, repo, *args, **kwargs):
     """Add --mq option to operate on patch repository instead of main"""
 
     # some commands do not like getting unknown options
     mq = kwargs.pop('mq', None)
 
     if not mq:
         return orig(ui, repo, *args, **kwargs)
 
     q = repo.mq
     r = q.qrepo()
     if not r:
         raise util.Abort(_('no queue repository'))
     return orig(r.ui, r, *args, **kwargs)
 
 def summary(orig, ui, repo, *args, **kwargs):
     r = orig(ui, repo, *args, **kwargs)
     q = repo.mq
     m = []
     a, u = len(q.applied), len(q.unapplied(repo))
     if a:
         m.append(ui.label(_("%d applied"), 'qseries.applied') % a)
     if u:
         m.append(ui.label(_("%d unapplied"), 'qseries.unapplied') % u)
     if m:
         ui.write("mq:     %s\n" % ', '.join(m))
     else:
         ui.note(_("mq:     (empty queue)\n"))
     return r
 
+def revsetmq(repo, subset, x):
+    """``mq()``
+    Changesets managed by MQ.
+    """
+    revset.getargs(x, 0, 0, _("mq takes no arguments"))
+    applied = set([repo[r.node].rev() for r in repo.mq.applied])
+    return [r for r in subset if r in applied]
+
+def extsetup(ui):
+    revset.symbols['mq'] = revsetmq
+
+# tell hggettext to extract docstrings from these functions:
+i18nfunctions = [revsetmq]
+
 def uisetup(ui):
     mqopt = [('', 'mq', None, _("operate on patch repository"))]
 
     extensions.wrapcommand(commands.table, 'import', mqimport)
     extensions.wrapcommand(commands.table, 'summary', summary)
 
     entry = extensions.wrapcommand(commands.table, 'init', mqinit)
     entry[1].extend(mqopt)
 
     nowrap = set(commands.norepo.split(" ") + ['qrecord'])
 
     def dotable(cmdtable):
         for cmd in cmdtable.keys():
             cmd = cmdutil.parsealiases(cmd)[0]
             if cmd in nowrap:
                 continue
             entry = extensions.wrapcommand(cmdtable, cmd, mqcommand)
             entry[1].extend(mqopt)
 
     dotable(commands.table)
 
     for extname, extmodule in extensions.extensions():
         if extmodule.__file__ != __file__:
             dotable(getattr(extmodule, 'cmdtable', {}))
 
 seriesopts = [('s', 'summary', None, _('print first line of patch header'))]
 
 cmdtable = {
     "qapplied":
         (applied,
          [('1', 'last', None, _('show only the last patch'))] + seriesopts,
          _('hg qapplied [-1] [-s] [PATCH]')),
     "qclone":
         (clone,
          [('', 'pull', None, _('use pull protocol to copy metadata')),
           ('U', 'noupdate', None, _('do not update the new working directories')),
           ('', 'uncompressed', None,
            _('use uncompressed transfer (fast over LAN)')),
           ('p', 'patches', '',
            _('location of source patch repository'), _('REPO')),
          ] + commands.remoteopts,
          _('hg qclone [OPTION]... SOURCE [DEST]')),
     "qcommit|qci":
         (commit,
          commands.table["^commit|ci"][1],
          _('hg qcommit [OPTION]... [FILE]...')),
     "^qdiff":
         (diff,
          commands.diffopts + commands.diffopts2 + commands.walkopts,
          _('hg qdiff [OPTION]... [FILE]...')),
     "qdelete|qremove|qrm":
         (delete,
          [('k', 'keep', None, _('keep patch file')),
           ('r', 'rev', [],
            _('stop managing a revision (DEPRECATED)'), _('REV'))],
          _('hg qdelete [-k] [PATCH]...')),
     'qfold':
         (fold,
          [('e', 'edit', None, _('edit patch header')),
           ('k', 'keep', None, _('keep folded patch files')),
          ] + commands.commitopts,
          _('hg qfold [-e] [-k] [-m TEXT] [-l FILE] PATCH...')),
     'qgoto':
         (goto,
          [('f', 'force', None, _('overwrite any local changes'))],
          _('hg qgoto [OPTION]... PATCH')),
     'qguard':
         (guard,
          [('l', 'list', None, _('list all patches and guards')),
           ('n', 'none', None, _('drop all guards'))],
          _('hg qguard [-l] [-n] [PATCH] [-- [+GUARD]... [-GUARD]...]')),
     'qheader': (header, [], _('hg qheader [PATCH]')),
     "qimport":
         (qimport,
          [('e', 'existing', None, _('import file in patch directory')),
           ('n', 'name', '',
            _('name of patch file'), _('NAME')),
           ('f', 'force', None, _('overwrite existing files')),
           ('r', 'rev', [],
            _('place existing revisions under mq control'), _('REV')),
           ('g', 'git', None, _('use git extended diff format')),
           ('P', 'push', None, _('qpush after importing'))],
          _('hg qimport [-e] [-n NAME] [-f] [-g] [-P] [-r REV]... FILE...')),
     "^qinit":
         (init,
          [('c', 'create-repo', None, _('create queue repository'))],
          _('hg qinit [-c]')),
     "^qnew":
         (new,
          [('e', 'edit', None, _('edit commit message')),
           ('f', 'force', None, _('import uncommitted changes (DEPRECATED)')),
           ('g', 'git', None, _('use git extended diff format')),
           ('U', 'currentuser', None, _('add "From: <current user>" to patch')),
           ('u', 'user', '',
            _('add "From: <USER>" to patch'), _('USER')),
           ('D', 'currentdate', None, _('add "Date: <current date>" to patch')),
           ('d', 'date', '',
            _('add "Date: <DATE>" to patch'), _('DATE'))
           ] + commands.walkopts + commands.commitopts,
          _('hg qnew [-e] [-m TEXT] [-l FILE] PATCH [FILE]...')),
     "qnext": (next, [] + seriesopts, _('hg qnext [-s]')),
     "qprev": (prev, [] + seriesopts, _('hg qprev [-s]')),
     "^qpop":
         (pop,
          [('a', 'all', None, _('pop all patches')),
           ('n', 'name', '',
            _('queue name to pop (DEPRECATED)'), _('NAME')),
           ('f', 'force', None, _('forget any local changes to patched files'))],
          _('hg qpop [-a] [-f] [PATCH | INDEX]')),
     "^qpush":
         (push,
          [('f', 'force', None, _('apply on top of local changes')),
           ('e', 'exact', None, _('apply the target patch to its recorded parent')),
           ('l', 'list', None, _('list patch name in commit text')),
           ('a', 'all', None, _('apply all patches')),
           ('m', 'merge', None, _('merge from another queue (DEPRECATED)')),
           ('n', 'name', '',
            _('merge queue name (DEPRECATED)'), _('NAME')),
           ('', 'move', None, _('reorder patch series and apply only the patch'))],
          _('hg qpush [-f] [-l] [-a] [--move] [PATCH | INDEX]')),
     "^qrefresh":
         (refresh,
          [('e', 'edit', None, _('edit commit message')),
           ('g', 'git', None, _('use git extended diff format')),
           ('s', 'short', None,
            _('refresh only files already in the patch and specified files')),
           ('U', 'currentuser', None,
            _('add/update author field in patch with current user')),
           ('u', 'user', '',
            _('add/update author field in patch with given user'), _('USER')),
           ('D', 'currentdate', None,
            _('add/update date field in patch with current date')),
           ('d', 'date', '',
            _('add/update date field in patch with given date'), _('DATE'))
           ] + commands.walkopts + commands.commitopts,
          _('hg qrefresh [-I] [-X] [-e] [-m TEXT] [-l FILE] [-s] [FILE]...')),
     'qrename|qmv':
         (rename, [], _('hg qrename PATCH1 [PATCH2]')),
     "qrestore":
         (restore,
          [('d', 'delete', None, _('delete save entry')),
           ('u', 'update', None, _('update queue working directory'))],
          _('hg qrestore [-d] [-u] REV')),
     "qsave":
         (save,
          [('c', 'copy', None, _('copy patch directory')),
           ('n', 'name', '',
            _('copy directory name'), _('NAME')),
           ('e', 'empty', None, _('clear queue status file')),
           ('f', 'force', None, _('force copy'))] + commands.commitopts,
          _('hg qsave [-m TEXT] [-l FILE] [-c] [-n NAME] [-e] [-f]')),
     "qselect":
         (select,
          [('n', 'none', None, _('disable all guards')),
           ('s', 'series', None, _('list all guards in series file')),
           ('', 'pop', None, _('pop to before first guarded applied patch')),
           ('', 'reapply', None, _('pop, then reapply patches'))],
          _('hg qselect [OPTION]... [GUARD]...')),
     "qseries":
         (series,
          [('m', 'missing', None, _('print patches not in series')),
          ] + seriesopts,
           _('hg qseries [-ms]')),
      "strip":
          (strip,
          [('f', 'force', None, _('force removal of changesets, discard '
                                  'uncommitted changes (no backup)')),
           ('b', 'backup', None, _('bundle only changesets with local revision'
                                   ' number greater than REV which are not'
                                   ' descendants of REV (DEPRECATED)')),
           ('n', 'no-backup', None, _('no backups')),
           ('', 'nobackup', None, _('no backups (DEPRECATED)')),
           ('k', 'keep', None, _("do not modify working copy during strip"))],
           _('hg strip [-k] [-f] [-n] REV...')),
      "qtop": (top, [] + seriesopts, _('hg qtop [-s]')),
     "qunapplied":
         (unapplied,
          [('1', 'first', None, _('show only the first patch'))] + seriesopts,
          _('hg qunapplied [-1] [-s] [PATCH]')),
     "qfinish":
         (finish,
          [('a', 'applied', None, _('finish all applied changesets'))],
          _('hg qfinish [-a] [REV]...')),
     'qqueue':
         (qqueue,
          [
              ('l', 'list', False, _('list all available queues')),
              ('c', 'create', False, _('create new queue')),
              ('', 'rename', False, _('rename active queue')),
              ('', 'delete', False, _('delete reference to queue')),
              ('', 'purge', False, _('delete queue, and remove patch dir')),
          ],
          _('[OPTION] [QUEUE]')),
 }
 
 colortable = {'qguard.negative': 'red',
               'qguard.positive': 'yellow',
               'qguard.unguarded': 'green',
               'qseries.applied': 'blue bold underline',
               'qseries.guarded': 'black bold',
               'qseries.missing': 'red bold',
               'qseries.unapplied': 'black bold'}

tests/test-mq.t

@@ -1,1387 +1,1395 b''
   $ checkundo()
   > {
   >     if [ -f .hg/store/undo ]; then
   >     echo ".hg/store/undo still exists after $1"
   >     fi
   > }
 
   $ echo "[extensions]" >> $HGRCPATH
   $ echo "mq=" >> $HGRCPATH
 
   $ echo "[mq]" >> $HGRCPATH
   $ echo "plain=true" >> $HGRCPATH
 
 
 help
 
   $ hg help mq
   mq extension - manage a stack of patches
   
   This extension lets you work with a stack of patches in a Mercurial
   repository. It manages two stacks of patches - all known patches, and applied
   patches (subset of known patches).
   
   Known patches are represented as patch files in the .hg/patches directory.
   Applied patches are both patch files and changesets.
   
   Common tasks (use "hg help command" for more details):
   
     create new patch                          qnew
     import existing patch                     qimport
   
     print patch series                        qseries
     print applied patches                     qapplied
   
     add known patch to applied stack          qpush
     remove patch from applied stack           qpop
     refresh contents of top applied patch     qrefresh
   
   By default, mq will automatically use git patches when required to avoid
   losing file mode changes, copy records, binary files or empty files creations
   or deletions. This behaviour can be configured with:
   
     [mq]
     git = auto/keep/yes/no
   
   If set to 'keep', mq will obey the [diff] section configuration while
   preserving existing git patches upon qrefresh. If set to 'yes' or 'no', mq
   will override the [diff] section and always generate git or regular patches,
   possibly losing data in the second case.
   
   You will by default be managing a patch queue named "patches". You can create
   other, independent patch queues with the "hg qqueue" command.
   
   list of commands:
   
    qapplied     print the patches already applied
    qclone       clone main and patch repository at same time
    qdelete      remove patches from queue
    qdiff        diff of the current patch and subsequent modifications
    qfinish      move applied patches into repository history
    qfold        fold the named patches into the current patch
    qgoto        push or pop patches until named patch is at top of stack
    qguard       set or print guards for a patch
    qheader      print the header of the topmost or specified patch
    qimport      import a patch
    qnew         create a new patch
    qnext        print the name of the next patch
    qpop         pop the current patch off the stack
    qprev        print the name of the previous patch
    qpush        push the next patch onto the stack
    qqueue       manage multiple patch queues
    qrefresh     update the current patch
    qrename      rename a patch
    qselect      set or print guarded patches to push
    qseries      print the entire series file
    qtop         print the name of the current patch
    qunapplied   print the patches not yet applied
    strip        strip changesets and all their descendants from the repository
   
   use "hg -v help mq" to show builtin aliases and global options
 
   $ hg init a
   $ cd a
   $ echo a > a
   $ hg ci -Ama
   adding a
 
   $ hg clone . ../k
   updating to branch default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ mkdir b
   $ echo z > b/z
   $ hg ci -Ama
   adding b/z
 
 
 qinit
 
   $ hg qinit
 
   $ cd ..
   $ hg init b
 
 
 -R qinit
 
   $ hg -R b qinit
 
   $ hg init c
 
 
 qinit -c
 
   $ hg --cwd c qinit -c
   $ hg -R c/.hg/patches st
   A .hgignore
   A series
 
 
 qinit; qinit -c
 
   $ hg init d
   $ cd d
   $ hg qinit
   $ hg qinit -c
 
 qinit -c should create both files if they don't exist
 
   $ cat .hg/patches/.hgignore
   ^\.hg
   ^\.mq
   syntax: glob
   status
   guards
   $ cat .hg/patches/series
   $ hg qinit -c
   abort: repository $TESTTMP/d/.hg/patches already exists!
   [255]
   $ cd ..
 
   $ echo '% qinit; <stuff>; qinit -c'
   % qinit; <stuff>; qinit -c
   $ hg init e
   $ cd e
   $ hg qnew A
   $ checkundo qnew
   $ echo foo > foo
   $ hg add foo
   $ hg qrefresh
   $ hg qnew B
   $ echo >> foo
   $ hg qrefresh
   $ echo status >> .hg/patches/.hgignore
   $ echo bleh >> .hg/patches/.hgignore
   $ hg qinit -c
   adding .hg/patches/A
   adding .hg/patches/B
   $ hg -R .hg/patches status
   A .hgignore
   A A
   A B
   A series
 
 qinit -c shouldn't touch these files if they already exist
 
   $ cat .hg/patches/.hgignore
   status
   bleh
   $ cat .hg/patches/series
   A
   B
 
 add an untracked file
 
   $ echo >> .hg/patches/flaf
 
 status --mq with color (issue2096)
 
   $ hg status --mq --config extensions.color= --config color.mode=ansi --color=always
   \x1b[0;32;1mA .hgignore\x1b[0m (esc)
   \x1b[0;32;1mA A\x1b[0m (esc)
   \x1b[0;32;1mA B\x1b[0m (esc)
   \x1b[0;32;1mA series\x1b[0m (esc)
   \x1b[0;35;1;4m? flaf\x1b[0m (esc)
 
 try the --mq option on a command provided by an extension
 
   $ hg purge --mq --verbose --config extensions.purge=
   Removing file flaf
 
   $ cd ..
 
 init --mq without repo
 
   $ mkdir f
   $ cd f
   $ hg init --mq
   abort: there is no Mercurial repository here (.hg not found)
   [255]
   $ cd ..
 
 init --mq with repo path
 
   $ hg init g
   $ hg init --mq g
   $ test -d g/.hg/patches/.hg
 
 init --mq with nonexistent directory
 
   $ hg init --mq nonexistentdir
   abort: repository nonexistentdir not found!
   [255]
 
 
 init --mq with bundle (non "local")
 
   $ hg -R a bundle --all a.bundle >/dev/null
   $ hg init --mq a.bundle
   abort: only a local queue repository may be initialized
   [255]
 
   $ cd a
 
   $ hg qnew -m 'foo bar' test.patch
 
   $ echo '# comment' > .hg/patches/series.tmp
   $ echo >> .hg/patches/series.tmp # empty line
   $ cat .hg/patches/series >> .hg/patches/series.tmp
   $ mv .hg/patches/series.tmp .hg/patches/series
 
 
 qrefresh
 
   $ echo a >> a
   $ hg qrefresh
   $ cat .hg/patches/test.patch
   foo bar
   
   diff -r [a-f0-9]* a (re)
   --- a/a\t(?P<date>.*) (re)
   \+\+\+ b/a\t(?P<date2>.*) (re)
   @@ -1,1 +1,2 @@
    a
   +a
 
 empty qrefresh
 
   $ hg qrefresh -X a
 
 revision:
 
   $ hg diff -r -2 -r -1
 
 patch:
 
   $ cat .hg/patches/test.patch
   foo bar
   
 
 working dir diff:
 
   $ hg diff --nodates -q
   --- a/a
   +++ b/a
   @@ -1,1 +1,2 @@
    a
   +a
 
 restore things
 
   $ hg qrefresh
   $ checkundo qrefresh
 
 
 qpop
 
   $ hg qpop
   popping test.patch
   patch queue now empty
   $ checkundo qpop
 
 
 qpush with dump of tag cache
 Dump the tag cache to ensure that it has exactly one head after qpush.
 
   $ rm -f .hg/cache/tags
   $ hg tags > /dev/null
 
 .hg/cache/tags (pre qpush):
 
   $ cat .hg/cache/tags
   1 [\da-f]{40} (re)
   
   $ hg qpush
   applying test.patch
   now at: test.patch
   $ hg tags > /dev/null
 
 .hg/cache/tags (post qpush):
 
   $ cat .hg/cache/tags
   2 [\da-f]{40} (re)
   
   $ checkundo qpush
   $ cd ..
 
 
 pop/push outside repo
   $ hg -R a qpop
   popping test.patch
   patch queue now empty
   $ hg -R a qpush
   applying test.patch
   now at: test.patch
 
   $ cd a
   $ hg qnew test2.patch
 
 qrefresh in subdir
 
   $ cd b
   $ echo a > a
   $ hg add a
   $ hg qrefresh
 
 pop/push -a in subdir
 
   $ hg qpop -a
   popping test2.patch
   popping test.patch
   patch queue now empty
   $ hg --traceback qpush -a
   applying test.patch
   applying test2.patch
   now at: test2.patch
 
 
 setting columns & formatted tests truncating (issue1912)
 
   $ COLUMNS=4 hg qseries --config ui.formatted=true
   test.patch
   test2.patch
   $ COLUMNS=20 hg qseries --config ui.formatted=true -vs
   0 A test.patch: f...
   1 A test2.patch: 
   $ hg qpop
   popping test2.patch
   now at: test.patch
   $ hg qseries -vs
   0 A test.patch: foo bar
   1 U test2.patch: 
   $ hg sum | grep mq
   mq:     1 applied, 1 unapplied
   $ hg qpush
   applying test2.patch
   now at: test2.patch
   $ hg sum | grep mq
   mq:     2 applied
   $ hg qapplied
   test.patch
   test2.patch
   $ hg qtop
   test2.patch
 
 
 prev
 
   $ hg qapp -1
   test.patch
 
 next
 
   $ hg qunapp -1
   all patches applied
   [1]
 
   $ hg qpop
   popping test2.patch
   now at: test.patch
 
 commit should fail
 
   $ hg commit
   abort: cannot commit over an applied mq patch
   [255]
 
 push should fail
 
   $ hg push ../../k
   pushing to ../../k
   abort: source has mq patches applied
   [255]
 
 
 import should fail
 
   $ hg st .
   $ echo foo >> ../a
   $ hg diff > ../../import.diff
   $ hg revert --no-backup ../a
   $ hg import ../../import.diff
   abort: cannot import over an applied patch
   [255]
   $ hg st
 
 import --no-commit should succeed
 
   $ hg import --no-commit ../../import.diff
   applying ../../import.diff
   $ hg st
   M a
   $ hg revert --no-backup ../a
 
 
 qunapplied
 
   $ hg qunapplied
   test2.patch
 
 
 qpush/qpop with index
 
   $ hg qnew test1b.patch
   $ echo 1b > 1b
   $ hg add 1b
   $ hg qrefresh
   $ hg qpush 2
   applying test2.patch
   now at: test2.patch
   $ hg qpop 0
   popping test2.patch
   popping test1b.patch
   now at: test.patch
   $ hg qpush test.patch+1
   applying test1b.patch
   now at: test1b.patch
   $ hg qpush test.patch+2
   applying test2.patch
   now at: test2.patch
   $ hg qpop test2.patch-1
   popping test2.patch
   now at: test1b.patch
   $ hg qpop test2.patch-2
   popping test1b.patch
   now at: test.patch
   $ hg qpush test1b.patch+1
   applying test1b.patch
   applying test2.patch
   now at: test2.patch
 
 
 qpush --move
 
   $ hg qpop -a
   popping test2.patch
   popping test1b.patch
   popping test.patch
   patch queue now empty
   $ hg qguard test1b.patch -- -negguard
   $ hg qguard test2.patch -- +posguard
   $ hg qpush --move test2.patch # can't move guarded patch
   cannot push 'test2.patch' - guarded by ['+posguard']
   [1]
   $ hg qselect posguard
   number of unguarded, unapplied patches has changed from 2 to 3
   $ hg qpush --move test2.patch # move to front
   applying test2.patch
   now at: test2.patch
   $ hg qpush --move test1b.patch # negative guard unselected
   applying test1b.patch
   now at: test1b.patch
   $ hg qpush --move test.patch # noop move
   applying test.patch
   now at: test.patch
   $ hg qseries -v
   0 A test2.patch
   1 A test1b.patch
   2 A test.patch
   $ hg qpop -a
   popping test.patch
   popping test1b.patch
   popping test2.patch
   patch queue now empty
 
 cleaning up
 
   $ hg qselect --none
   guards deactivated
   number of unguarded, unapplied patches has changed from 3 to 2
   $ hg qguard --none test1b.patch
   $ hg qguard --none test2.patch
   $ hg qpush --move test.patch
   applying test.patch
   now at: test.patch
   $ hg qpush --move test1b.patch
   applying test1b.patch
   now at: test1b.patch
   $ hg qpush --move bogus # nonexistent patch
   abort: patch bogus not in series
   [255]
   $ hg qpush --move # no patch
   abort: please specify the patch to move
   [255]
   $ hg qpush --move test.patch # already applied
   abort: cannot push to a previous patch: test.patch
   [255]
   $ hg qpush
   applying test2.patch
   now at: test2.patch
 
 
 series after move
 
   $ cat `hg root`/.hg/patches/series
   test.patch
   test1b.patch
   test2.patch
   # comment
   
 
 
 pop, qapplied, qunapplied
 
   $ hg qseries -v
   0 A test.patch
   1 A test1b.patch
   2 A test2.patch
 
 qapplied -1 test.patch
 
   $ hg qapplied -1 test.patch
   only one patch applied
   [1]
 
 qapplied -1 test1b.patch
 
   $ hg qapplied -1 test1b.patch
   test.patch
 
 qapplied -1 test2.patch
 
   $ hg qapplied -1 test2.patch
   test1b.patch
 
 qapplied -1
 
   $ hg qapplied -1
   test1b.patch
 
 qapplied
 
   $ hg qapplied
   test.patch
   test1b.patch
   test2.patch
 
 qapplied test1b.patch
 
   $ hg qapplied test1b.patch
   test.patch
   test1b.patch
 
 qunapplied -1
 
   $ hg qunapplied -1
   all patches applied
   [1]
 
 qunapplied
 
   $ hg qunapplied
 
 popping
 
   $ hg qpop
   popping test2.patch
   now at: test1b.patch
 
 qunapplied -1
 
   $ hg qunapplied -1
   test2.patch
 
 qunapplied
 
   $ hg qunapplied
   test2.patch
 
 qunapplied test2.patch
 
   $ hg qunapplied test2.patch
 
 qunapplied -1 test2.patch
 
   $ hg qunapplied -1 test2.patch
   all patches applied
   [1]
 
 popping -a
 
   $ hg qpop -a
   popping test1b.patch
   popping test.patch
   patch queue now empty
 
 qapplied
 
   $ hg qapplied
 
 qapplied -1
 
   $ hg qapplied -1
   no patches applied
   [1]
   $ hg qpush
   applying test.patch
   now at: test.patch
 
 
 push should succeed
 
   $ hg qpop -a
   popping test.patch
   patch queue now empty
   $ hg push ../../k
   pushing to ../../k
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
 
 
 we want to start with some patches applied
 
   $ hg qpush -a
   applying test.patch
   applying test1b.patch
   applying test2.patch
   now at: test2.patch
 
 % pops all patches and succeeds
 
   $ hg qpop -a
   popping test2.patch
   popping test1b.patch
   popping test.patch
   patch queue now empty
 
 % does nothing and succeeds
 
   $ hg qpop -a
   no patches applied
 
 % fails - nothing else to pop
 
   $ hg qpop
   no patches applied
   [1]
 
 % pushes a patch and succeeds
 
   $ hg qpush
   applying test.patch
   now at: test.patch
 
 % pops a patch and succeeds
 
   $ hg qpop
   popping test.patch
   patch queue now empty
 
 % pushes up to test1b.patch and succeeds
 
   $ hg qpush test1b.patch
   applying test.patch
   applying test1b.patch
   now at: test1b.patch
 
 % does nothing and succeeds
 
   $ hg qpush test1b.patch
   qpush: test1b.patch is already at the top
 
 % does nothing and succeeds
 
   $ hg qpop test1b.patch
   qpop: test1b.patch is already at the top
 
 % fails - can't push to this patch
 
   $ hg qpush test.patch
   abort: cannot push to a previous patch: test.patch
   [255]
 
 % fails - can't pop to this patch
 
   $ hg qpop test2.patch
   abort: patch test2.patch is not applied
   [255]
 
 % pops up to test.patch and succeeds
 
   $ hg qpop test.patch
   popping test1b.patch
   now at: test.patch
 
 % pushes all patches and succeeds
 
   $ hg qpush -a
   applying test1b.patch
   applying test2.patch
   now at: test2.patch
 
 % does nothing and succeeds
 
   $ hg qpush -a
   all patches are currently applied
 
 % fails - nothing else to push
 
   $ hg qpush
   patch series already fully applied
   [1]
 
 % does nothing and succeeds
 
   $ hg qpush test2.patch
   qpush: test2.patch is already at the top
 
 strip
 
   $ cd ../../b
   $ echo x>x
   $ hg ci -Ama
   adding x
   $ hg strip tip
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   saved backup bundle to $TESTTMP/b/.hg/strip-backup/*-backup.hg (glob)
   $ hg unbundle .hg/strip-backup/*
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   (run 'hg update' to get a working copy)
 
 
 strip with local changes, should complain
 
   $ hg up
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo y>y
   $ hg add y
   $ hg strip tip
   abort: local changes found
   [255]
 
 --force strip with local changes
 
   $ hg strip -f tip
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   saved backup bundle to $TESTTMP/b/.hg/strip-backup/*-backup.hg (glob)
 
 
 cd b; hg qrefresh
 
   $ hg init refresh
   $ cd refresh
   $ echo a > a
   $ hg ci -Ama
   adding a
   $ hg qnew -mfoo foo
   $ echo a >> a
   $ hg qrefresh
   $ mkdir b
   $ cd b
   $ echo f > f
   $ hg add f
   $ hg qrefresh
   $ cat ../.hg/patches/foo
   foo
   
   diff -r cb9a9f314b8b a
   --- a/a\t(?P<date>.*) (re)
   \+\+\+ b/a\t(?P<date>.*) (re)
   @@ -1,1 +1,2 @@
    a
   +a
   diff -r cb9a9f314b8b b/f
   --- /dev/null\t(?P<date>.*) (re)
   \+\+\+ b/b/f\t(?P<date>.*) (re)
   @@ -0,0 +1,1 @@
   +f
 
 hg qrefresh .
 
   $ hg qrefresh .
   $ cat ../.hg/patches/foo
   foo
   
   diff -r cb9a9f314b8b b/f
   --- /dev/null\t(?P<date>.*) (re)
   \+\+\+ b/b/f\t(?P<date>.*) (re)
   @@ -0,0 +1,1 @@
   +f
   $ hg status
   M a
 
 
 qpush failure
 
   $ cd ..
   $ hg qrefresh
   $ hg qnew -mbar bar
   $ echo foo > foo
   $ echo bar > bar
   $ hg add foo bar
   $ hg qrefresh
   $ hg qpop -a
   popping bar
   popping foo
   patch queue now empty
   $ echo bar > foo
   $ hg qpush -a
   applying foo
   applying bar
   file foo already exists
   1 out of 1 hunks FAILED -- saving rejects to file foo.rej
   patch failed, unable to continue (try -v)
   patch failed, rejects left in working dir
   errors during apply, please fix and refresh bar
   [2]
   $ hg st
   ? foo
   ? foo.rej
 
 
 mq tags
 
   $ hg log --template '{rev} {tags}\n' -r qparent:qtip
   0 qparent
   1 foo qbase
   2 bar qtip tip
 
+mq revset
+
+  $ hg log -r 'mq()' --template '{rev}\n'
+  1
+  2
+  $ hg help revsets | grep -i mq
+      "mq()"
+        Changesets managed by MQ.
 
 bad node in status
 
   $ hg qpop
   popping bar
   now at: foo
   $ hg strip -qn tip
   $ hg tip
   changeset:   0:cb9a9f314b8b
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     a
   
   $ hg branches
   default                        0:cb9a9f314b8b
   $ hg qpop
   no patches applied
   [1]
 
   $ cat >>$HGRCPATH <<EOF
   > [diff]
   > git = True
   > EOF
   $ cd ..
   $ hg init git
   $ cd git
   $ hg qinit
 
   $ hg qnew -m'new file' new
   $ echo foo > new
   $ chmod +x new
   $ hg add new
   $ hg qrefresh
   $ cat .hg/patches/new
   new file
   
   diff --git a/new b/new
   new file mode 100755
   --- /dev/null
   +++ b/new
   @@ -0,0 +1,1 @@
   +foo
 
   $ hg qnew -m'copy file' copy
   $ hg cp new copy
   $ hg qrefresh
   $ cat .hg/patches/copy
   copy file
   
   diff --git a/new b/copy
   copy from new
   copy to copy
 
   $ hg qpop
   popping copy
   now at: new
   $ hg qpush
   applying copy
   now at: copy
   $ hg qdiff
   diff --git a/new b/copy
   copy from new
   copy to copy
   $ cat >>$HGRCPATH <<EOF
   > [diff]
   > git = False
   > EOF
   $ hg qdiff --git
   diff --git a/new b/copy
   copy from new
   copy to copy
   $ cd ..
 
 empty lines in status
 
   $ hg init emptystatus
   $ cd emptystatus
   $ hg qinit
   $ printf '\n\n' > .hg/patches/status
   $ hg qser
   $ cd ..
 
 bad line in status (without ":")
 
   $ hg init badstatus
   $ cd badstatus
   $ hg qinit
   $ printf 'babar has no colon in this line\n' > .hg/patches/status
   $ hg qser
   malformated mq status line: ['babar has no colon in this line']
   $ cd ..
 
 
 test file addition in slow path
 
   $ hg init slow
   $ cd slow
   $ hg qinit
   $ echo foo > foo
   $ hg add foo
   $ hg ci -m 'add foo'
   $ hg qnew bar
   $ echo bar > bar
   $ hg add bar
   $ hg mv foo baz
   $ hg qrefresh --git
   $ hg up -C 0
   1 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo >> foo
   $ hg ci -m 'change foo'
   created new head
   $ hg up -C 1
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg qrefresh --git
   $ cat .hg/patches/bar
   diff --git a/bar b/bar
   new file mode 100644
   --- /dev/null
   +++ b/bar
   @@ -0,0 +1,1 @@
   +bar
   diff --git a/foo b/baz
   rename from foo
   rename to baz
   $ hg log -v --template '{rev} {file_copies}\n' -r .
   2 baz (foo)
   $ hg qrefresh --git
   $ cat .hg/patches/bar
   diff --git a/bar b/bar
   new file mode 100644
   --- /dev/null
   +++ b/bar
   @@ -0,0 +1,1 @@
   +bar
   diff --git a/foo b/baz
   rename from foo
   rename to baz
   $ hg log -v --template '{rev} {file_copies}\n' -r .
   2 baz (foo)
   $ hg qrefresh
   $ grep 'diff --git' .hg/patches/bar
   diff --git a/bar b/bar
   diff --git a/foo b/baz
 
 
 test file move chains in the slow path
 
   $ hg up -C 1
   1 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo >> foo
   $ hg ci -m 'change foo again'
   $ hg up -C 2
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg mv bar quux
   $ hg mv baz bleh
   $ hg qrefresh --git
   $ cat .hg/patches/bar
   diff --git a/foo b/bleh
   rename from foo
   rename to bleh
   diff --git a/quux b/quux
   new file mode 100644
   --- /dev/null
   +++ b/quux
   @@ -0,0 +1,1 @@
   +bar
   $ hg log -v --template '{rev} {file_copies}\n' -r .
   3 bleh (foo)
   $ hg mv quux fred
   $ hg mv bleh barney
   $ hg qrefresh --git
   $ cat .hg/patches/bar
   diff --git a/foo b/barney
   rename from foo
   rename to barney
   diff --git a/fred b/fred
   new file mode 100644
   --- /dev/null
   +++ b/fred
   @@ -0,0 +1,1 @@
   +bar
   $ hg log -v --template '{rev} {file_copies}\n' -r .
   3 barney (foo)
 
 
 refresh omitting an added file
 
   $ hg qnew baz
   $ echo newfile > newfile
   $ hg add newfile
   $ hg qrefresh
   $ hg st -A newfile
   C newfile
   $ hg qrefresh -X newfile
   $ hg st -A newfile
   A newfile
   $ hg revert newfile
   $ rm newfile
   $ hg qpop
   popping baz
   now at: bar
   $ hg qdel baz
 
 
 create a git patch
 
   $ echo a > alexander
   $ hg add alexander
   $ hg qnew -f --git addalexander
   $ grep diff .hg/patches/addalexander
   diff --git a/alexander b/alexander
 
 
 create a git binary patch
 
   $ cat > writebin.py <<EOF
   > import sys
   > path = sys.argv[1]
   > open(path, 'wb').write('BIN\x00ARY')
   > EOF
   $ python writebin.py bucephalus
 
   $ python "$TESTDIR/md5sum.py" bucephalus
   8ba2a2f3e77b55d03051ff9c24ad65e7  bucephalus
   $ hg add bucephalus
   $ hg qnew -f --git addbucephalus
   $ grep diff .hg/patches/addbucephalus
   diff --git a/bucephalus b/bucephalus
 
 
 check binary patches can be popped and pushed
 
   $ hg qpop
   popping addbucephalus
   now at: addalexander
   $ test -f bucephalus && echo % bucephalus should not be there
   [1]
   $ hg qpush
   applying addbucephalus
   now at: addbucephalus
   $ test -f bucephalus
   $ python "$TESTDIR/md5sum.py" bucephalus
   8ba2a2f3e77b55d03051ff9c24ad65e7  bucephalus
 
 
 
 strip again
 
   $ cd ..
   $ hg init strip
   $ cd strip
   $ touch foo
   $ hg add foo
   $ hg ci -m 'add foo'
   $ echo >> foo
   $ hg ci -m 'change foo 1'
   $ hg up -C 0
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo 1 >> foo
   $ hg ci -m 'change foo 2'
   created new head
   $ HGMERGE=true hg merge
   merging foo
   0 files updated, 1 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci -m merge
   $ hg log
   changeset:   3:99615015637b
   tag:         tip
   parent:      2:20cbbe65cff7
   parent:      1:d2871fc282d4
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     merge
   
   changeset:   2:20cbbe65cff7
   parent:      0:53245c60e682
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     change foo 2
   
   changeset:   1:d2871fc282d4
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     change foo 1
   
   changeset:   0:53245c60e682
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     add foo
   
   $ hg strip 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   saved backup bundle to $TESTTMP/b/strip/.hg/strip-backup/*-backup.hg (glob)
   $ checkundo strip
   $ hg log
   changeset:   1:20cbbe65cff7
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     change foo 2
   
   changeset:   0:53245c60e682
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     add foo
   
   $ cd ..
 
 
 qclone
 
   $ qlog()
   > {
   >     echo 'main repo:'
   >     hg log --template '    rev {rev}: {desc}\n'
   >     echo 'patch repo:'
   >     hg -R .hg/patches log --template '    rev {rev}: {desc}\n'
   > }
   $ hg init qclonesource
   $ cd qclonesource
   $ echo foo > foo
   $ hg add foo
   $ hg ci -m 'add foo'
   $ hg qinit
   $ hg qnew patch1
   $ echo bar >> foo
   $ hg qrefresh -m 'change foo'
   $ cd ..
 
 
 repo with unversioned patch dir
 
   $ hg qclone qclonesource failure
   abort: versioned patch repository not found (see init --mq)
   [255]
 
   $ cd qclonesource
   $ hg qinit -c
   adding .hg/patches/patch1
   $ hg qci -m checkpoint
   $ qlog
   main repo:
       rev 1: change foo
       rev 0: add foo
   patch repo:
       rev 0: checkpoint
   $ cd ..
 
 
 repo with patches applied
 
   $ hg qclone qclonesource qclonedest
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd qclonedest
   $ qlog
   main repo:
       rev 0: add foo
   patch repo:
       rev 0: checkpoint
   $ cd ..
 
 
 repo with patches unapplied
 
   $ cd qclonesource
   $ hg qpop -a
   popping patch1
   patch queue now empty
   $ qlog
   main repo:
       rev 0: add foo
   patch repo:
       rev 0: checkpoint
   $ cd ..
   $ hg qclone qclonesource qclonedest2
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd qclonedest2
   $ qlog
   main repo:
       rev 0: add foo
   patch repo:
       rev 0: checkpoint
   $ cd ..
 
 
 Issue1033: test applying on an empty file
 
   $ hg init empty
   $ cd empty
   $ touch a
   $ hg ci -Am addempty
   adding a
   $ echo a > a
   $ hg qnew -f -e changea
   $ hg qpop
   popping changea
   patch queue now empty
   $ hg qpush
   applying changea
   now at: changea
   $ cd ..
 
 
 test qpush with --force, issue1087
 
   $ hg init forcepush
   $ cd forcepush
   $ echo hello > hello.txt
   $ echo bye > bye.txt
   $ hg ci -Ama
   adding bye.txt
   adding hello.txt
   $ hg qnew -d '0 0' empty
   $ hg qpop
   popping empty
   patch queue now empty
   $ echo world >> hello.txt
 
 
 qpush should fail, local changes
 
   $ hg qpush
   abort: local changes found
   [255]
 
 
 apply force, should not discard changes with empty patch
 
   $ hg qpush -f
   applying empty
   patch empty is empty
   now at: empty
   $ hg diff --config diff.nodates=True
   diff -r d58265112590 hello.txt
   --- a/hello.txt
   +++ b/hello.txt
   @@ -1,1 +1,2 @@
    hello
   +world
   $ hg qdiff --config diff.nodates=True
   diff -r 9ecee4f634e3 hello.txt
   --- a/hello.txt
   +++ b/hello.txt
   @@ -1,1 +1,2 @@
    hello
   +world
   $ hg log -l1 -p
   changeset:   1:d58265112590
   tag:         empty
   tag:         qbase
   tag:         qtip
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     imported patch empty
   
   
   $ hg qref -d '0 0'
   $ hg qpop
   popping empty
   patch queue now empty
   $ echo universe >> hello.txt
   $ echo universe >> bye.txt
 
 
 qpush should fail, local changes
 
   $ hg qpush
   abort: local changes found
   [255]
 
 
 apply force, should discard changes in hello, but not bye
 
   $ hg qpush -f
   applying empty
   now at: empty
   $ hg st
   M bye.txt
   $ hg diff --config diff.nodates=True
   diff -r ba252371dbc1 bye.txt
   --- a/bye.txt
   +++ b/bye.txt
   @@ -1,1 +1,2 @@
    bye
   +universe
   $ hg qdiff --config diff.nodates=True
   diff -r 9ecee4f634e3 bye.txt
   --- a/bye.txt
   +++ b/bye.txt
   @@ -1,1 +1,2 @@
    bye
   +universe
   diff -r 9ecee4f634e3 hello.txt
   --- a/hello.txt
   +++ b/hello.txt
   @@ -1,1 +1,3 @@
    hello
   +world
   +universe
 
 
 test popping revisions not in working dir ancestry
 
   $ hg qseries -v
   0 A empty
   $ hg up qparent
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg qpop
   popping empty
   patch queue now empty
 
   $ cd ..
   $ hg init deletion-order
   $ cd deletion-order
 
   $ touch a
   $ hg ci -Aqm0
 
   $ hg qnew rename-dir
   $ hg rm a
   $ hg qrefresh
 
   $ mkdir a b
   $ touch a/a b/b
   $ hg add -q a b
   $ hg qrefresh
 
 
 test popping must remove files added in subdirectories first
 
   $ hg qpop
   popping rename-dir
   patch queue now empty
   $ cd ..