rebase: fix --collapse when a file was added then removed

When a series of commits first adds a file and then removes it,
hg rebase --collapse prompts whether to keep the file or delete it. This is
due to it reusing the branch merge code. In a noninteractive terminal it
defaults to keeping the file, which results in a collapsed commit that is
has a file that should be deleted. This bug resulted in developers accidentally
commiting unintentional changes to our repo twice today, so it's fairly
important to get fixed.

This change allows rebase --collapse to tell the merge code to accept the
latest version every time without prompting.

Adds a test as well.

hgext/largefiles/overrides.py

@@ -1,1165 +1,1166
 # Copyright 2009-2010 Gregory P. Ward
 # Copyright 2009-2010 Intelerad Medical Systems Incorporated
 # Copyright 2010-2011 Fog Creek Software
 # Copyright 2010-2011 Unity Technologies
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 '''Overridden Mercurial commands and functions for the largefiles extension'''
 
 import os
 import copy
 
 from mercurial import hg, commands, util, cmdutil, scmutil, match as match_, \
     node, archival, error, merge, discovery
 from mercurial.i18n import _
 from mercurial.node import hex
 from hgext import rebase
 
 import lfutil
 import lfcommands
 
 # -- Utility functions: commonly/repeatedly needed functionality ---------------
 
 def installnormalfilesmatchfn(manifest):
     '''overrides scmutil.match so that the matcher it returns will ignore all
     largefiles'''
     oldmatch = None # for the closure
     def overridematch(ctx, pats=[], opts={}, globbed=False,
             default='relpath'):
         match = oldmatch(ctx, pats, opts, globbed, default)
         m = copy.copy(match)
         notlfile = lambda f: not (lfutil.isstandin(f) or lfutil.standin(f) in
                 manifest)
         m._files = filter(notlfile, m._files)
         m._fmap = set(m._files)
         origmatchfn = m.matchfn
         m.matchfn = lambda f: notlfile(f) and origmatchfn(f) or None
         return m
     oldmatch = installmatchfn(overridematch)
 
 def installmatchfn(f):
     oldmatch = scmutil.match
     setattr(f, 'oldmatch', oldmatch)
     scmutil.match = f
     return oldmatch
 
 def restorematchfn():
     '''restores scmutil.match to what it was before installnormalfilesmatchfn
     was called.  no-op if scmutil.match is its original function.
 
     Note that n calls to installnormalfilesmatchfn will require n calls to
     restore matchfn to reverse'''
     scmutil.match = getattr(scmutil.match, 'oldmatch', scmutil.match)
 
 def addlargefiles(ui, repo, *pats, **opts):
     large = opts.pop('large', None)
     lfsize = lfutil.getminsize(
         ui, lfutil.islfilesrepo(repo), opts.pop('lfsize', None))
 
     lfmatcher = None
     if lfutil.islfilesrepo(repo):
         lfpats = ui.configlist(lfutil.longname, 'patterns', default=[])
         if lfpats:
             lfmatcher = match_.match(repo.root, '', list(lfpats))
 
     lfnames = []
     m = scmutil.match(repo[None], pats, opts)
     m.bad = lambda x, y: None
     wctx = repo[None]
     for f in repo.walk(m):
         exact = m.exact(f)
         lfile = lfutil.standin(f) in wctx
         nfile = f in wctx
         exists = lfile or nfile
 
         # Don't warn the user when they attempt to add a normal tracked file.
         # The normal add code will do that for us.
         if exact and exists:
             if lfile:
                 ui.warn(_('%s already a largefile\n') % f)
             continue
 
         if (exact or not exists) and not lfutil.isstandin(f):
             wfile = repo.wjoin(f)
 
             # In case the file was removed previously, but not committed
             # (issue3507)
             if not os.path.exists(wfile):
                 continue
 
             abovemin = (lfsize and
                         os.lstat(wfile).st_size >= lfsize * 1024 * 1024)
             if large or abovemin or (lfmatcher and lfmatcher(f)):
                 lfnames.append(f)
                 if ui.verbose or not exact:
                     ui.status(_('adding %s as a largefile\n') % m.rel(f))
 
     bad = []
     standins = []
 
     # Need to lock, otherwise there could be a race condition between
     # when standins are created and added to the repo.
     wlock = repo.wlock()
     try:
         if not opts.get('dry_run'):
             lfdirstate = lfutil.openlfdirstate(ui, repo)
             for f in lfnames:
                 standinname = lfutil.standin(f)
                 lfutil.writestandin(repo, standinname, hash='',
                     executable=lfutil.getexecutable(repo.wjoin(f)))
                 standins.append(standinname)
                 if lfdirstate[f] == 'r':
                     lfdirstate.normallookup(f)
                 else:
                     lfdirstate.add(f)
             lfdirstate.write()
             bad += [lfutil.splitstandin(f)
                     for f in repo[None].add(standins)
                     if f in m.files()]
     finally:
         wlock.release()
     return bad
 
 def removelargefiles(ui, repo, *pats, **opts):
     after = opts.get('after')
     if not pats and not after:
         raise util.Abort(_('no files specified'))
     m = scmutil.match(repo[None], pats, opts)
     try:
         repo.lfstatus = True
         s = repo.status(match=m, clean=True)
     finally:
         repo.lfstatus = False
     manifest = repo[None].manifest()
     modified, added, deleted, clean = [[f for f in list
                                         if lfutil.standin(f) in manifest]
                                        for list in [s[0], s[1], s[3], s[6]]]
 
     def warn(files, msg):
         for f in files:
             ui.warn(msg % m.rel(f))
         return int(len(files) > 0)
 
     result = 0
 
     if after:
         remove, forget = deleted, []
         result = warn(modified + added + clean,
                       _('not removing %s: file still exists\n'))
     else:
         remove, forget = deleted + clean, []
         result = warn(modified, _('not removing %s: file is modified (use -f'
                                   ' to force removal)\n'))
         result = warn(added, _('not removing %s: file has been marked for add'
                                ' (use forget to undo)\n')) or result
 
     for f in sorted(remove + forget):
         if ui.verbose or not m.exact(f):
             ui.status(_('removing %s\n') % m.rel(f))
 
     # Need to lock because standin files are deleted then removed from the
     # repository and we could race in-between.
     wlock = repo.wlock()
     try:
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         for f in remove:
             if not after:
                 # If this is being called by addremove, notify the user that we
                 # are removing the file.
                 if getattr(repo, "_isaddremove", False):
                     ui.status(_('removing %s\n') % f)
                 util.unlinkpath(repo.wjoin(f), ignoremissing=True)
             lfdirstate.remove(f)
         lfdirstate.write()
         forget = [lfutil.standin(f) for f in forget]
         remove = [lfutil.standin(f) for f in remove]
         repo[None].forget(forget)
         # If this is being called by addremove, let the original addremove
         # function handle this.
         if not getattr(repo, "_isaddremove", False):
             for f in remove:
                 util.unlinkpath(repo.wjoin(f), ignoremissing=True)
         repo[None].forget(remove)
     finally:
         wlock.release()
 
     return result
 
 # For overriding mercurial.hgweb.webcommands so that largefiles will
 # appear at their right place in the manifests.
 def decodepath(orig, path):
     return lfutil.splitstandin(path) or path
 
 # -- Wrappers: modify existing commands --------------------------------
 
 # Add works by going through the files that the user wanted to add and
 # checking if they should be added as largefiles. Then it makes a new
 # matcher which matches only the normal files and runs the original
 # version of add.
 def overrideadd(orig, ui, repo, *pats, **opts):
     normal = opts.pop('normal')
     if normal:
         if opts.get('large'):
             raise util.Abort(_('--normal cannot be used with --large'))
         return orig(ui, repo, *pats, **opts)
     bad = addlargefiles(ui, repo, *pats, **opts)
     installnormalfilesmatchfn(repo[None].manifest())
     result = orig(ui, repo, *pats, **opts)
     restorematchfn()
 
     return (result == 1 or bad) and 1 or 0
 
 def overrideremove(orig, ui, repo, *pats, **opts):
     installnormalfilesmatchfn(repo[None].manifest())
     result = orig(ui, repo, *pats, **opts)
     restorematchfn()
     return removelargefiles(ui, repo, *pats, **opts) or result
 
 def overridestatusfn(orig, repo, rev2, **opts):
     try:
         repo._repo.lfstatus = True
         return orig(repo, rev2, **opts)
     finally:
         repo._repo.lfstatus = False
 
 def overridestatus(orig, ui, repo, *pats, **opts):
     try:
         repo.lfstatus = True
         return orig(ui, repo, *pats, **opts)
     finally:
         repo.lfstatus = False
 
 def overridedirty(orig, repo, ignoreupdate=False):
     try:
         repo._repo.lfstatus = True
         return orig(repo, ignoreupdate)
     finally:
         repo._repo.lfstatus = False
 
 def overridelog(orig, ui, repo, *pats, **opts):
     def overridematch(ctx, pats=[], opts={}, globbed=False,
             default='relpath'):
         """Matcher that merges root directory with .hglf, suitable for log.
         It is still possible to match .hglf directly.
         For any listed files run log on the standin too.
         matchfn tries both the given filename and with .hglf stripped.
         """
         match = oldmatch(ctx, pats, opts, globbed, default)
         m = copy.copy(match)
         standins = [lfutil.standin(f) for f in m._files]
         m._files.extend(standins)
         m._fmap = set(m._files)
         origmatchfn = m.matchfn
         def lfmatchfn(f):
             lf = lfutil.splitstandin(f)
             if lf is not None and origmatchfn(lf):
                 return True
             r = origmatchfn(f)
             return r
         m.matchfn = lfmatchfn
         return m
     oldmatch = installmatchfn(overridematch)
     try:
         repo.lfstatus = True
         return orig(ui, repo, *pats, **opts)
     finally:
         repo.lfstatus = False
         restorematchfn()
 
 def overrideverify(orig, ui, repo, *pats, **opts):
     large = opts.pop('large', False)
     all = opts.pop('lfa', False)
     contents = opts.pop('lfc', False)
 
     result = orig(ui, repo, *pats, **opts)
     if large or all or contents:
         result = result or lfcommands.verifylfiles(ui, repo, all, contents)
     return result
 
 def overridedebugstate(orig, ui, repo, *pats, **opts):
     large = opts.pop('large', False)
     if large:
         lfcommands.debugdirstate(ui, repo)
     else:
         orig(ui, repo, *pats, **opts)
 
 # Override needs to refresh standins so that update's normal merge
 # will go through properly. Then the other update hook (overriding repo.update)
 # will get the new files. Filemerge is also overridden so that the merge
 # will merge standins correctly.
 def overrideupdate(orig, ui, repo, *pats, **opts):
     lfdirstate = lfutil.openlfdirstate(ui, repo)
     s = lfdirstate.status(match_.always(repo.root, repo.getcwd()), [], False,
         False, False)
     (unsure, modified, added, removed, missing, unknown, ignored, clean) = s
 
     # Need to lock between the standins getting updated and their
     # largefiles getting updated
     wlock = repo.wlock()
     try:
         if opts['check']:
             mod = len(modified) > 0
             for lfile in unsure:
                 standin = lfutil.standin(lfile)
                 if repo['.'][standin].data().strip() != \
                         lfutil.hashfile(repo.wjoin(lfile)):
                     mod = True
                 else:
                     lfdirstate.normal(lfile)
             lfdirstate.write()
             if mod:
                 raise util.Abort(_('uncommitted local changes'))
         # XXX handle removed differently
         if not opts['clean']:
             for lfile in unsure + modified + added:
                 lfutil.updatestandin(repo, lfutil.standin(lfile))
     finally:
         wlock.release()
     return orig(ui, repo, *pats, **opts)
 
 # Before starting the manifest merge, merge.updates will call
 # _checkunknown to check if there are any files in the merged-in
 # changeset that collide with unknown files in the working copy.
 #
 # The largefiles are seen as unknown, so this prevents us from merging
 # in a file 'foo' if we already have a largefile with the same name.
 #
 # The overridden function filters the unknown files by removing any
 # largefiles. This makes the merge proceed and we can then handle this
 # case further in the overridden manifestmerge function below.
 def overridecheckunknownfile(origfn, repo, wctx, mctx, f):
     if lfutil.standin(f) in wctx:
         return False
     return origfn(repo, wctx, mctx, f)
 
 # The manifest merge handles conflicts on the manifest level. We want
 # to handle changes in largefile-ness of files at this level too.
 #
 # The strategy is to run the original manifestmerge and then process
 # the action list it outputs. There are two cases we need to deal with:
 #
 # 1. Normal file in p1, largefile in p2. Here the largefile is
 #    detected via its standin file, which will enter the working copy
 #    with a "get" action. It is not "merge" since the standin is all
 #    Mercurial is concerned with at this level -- the link to the
 #    existing normal file is not relevant here.
 #
 # 2. Largefile in p1, normal file in p2. Here we get a "merge" action
 #    since the largefile will be present in the working copy and
 #    different from the normal file in p2. Mercurial therefore
 #    triggers a merge action.
 #
 # In both cases, we prompt the user and emit new actions to either
 # remove the standin (if the normal file was kept) or to remove the
 # normal file and get the standin (if the largefile was kept). The
 # default prompt answer is to use the largefile version since it was
 # presumably changed on purpose.
 #
 # Finally, the merge.applyupdates function will then take care of
 # writing the files into the working copy and lfcommands.updatelfiles
 # will update the largefiles.
 def overridemanifestmerge(origfn, repo, p1, p2, pa, branchmerge, force,
-                          partial):
+                          partial, acceptremote=False):
     overwrite = force and not branchmerge
-    actions = origfn(repo, p1, p2, pa, branchmerge, force, partial)
+    actions = origfn(repo, p1, p2, pa, branchmerge, force, partial,
+                     acceptremote)
     processed = []
 
     for action in actions:
         if overwrite:
             processed.append(action)
             continue
         f, m, args, msg = action
 
         choices = (_('&Largefile'), _('&Normal file'))
         if m == "g" and lfutil.splitstandin(f) in p1 and f in p2:
             # Case 1: normal file in the working copy, largefile in
             # the second parent
             lfile = lfutil.splitstandin(f)
             standin = f
             msg = _('%s has been turned into a largefile\n'
                     'use (l)argefile or keep as (n)ormal file?') % lfile
             if repo.ui.promptchoice(msg, choices, 0) == 0:
                 processed.append((lfile, "r", None, msg))
                 processed.append((standin, "g", (p2.flags(standin),), msg))
             else:
                 processed.append((standin, "r", None, msg))
         elif m == "g" and lfutil.standin(f) in p1 and f in p2:
             # Case 2: largefile in the working copy, normal file in
             # the second parent
             standin = lfutil.standin(f)
             lfile = f
             msg = _('%s has been turned into a normal file\n'
                     'keep as (l)argefile or use (n)ormal file?') % lfile
             if repo.ui.promptchoice(msg, choices, 0) == 0:
                 processed.append((lfile, "r", None, msg))
             else:
                 processed.append((standin, "r", None, msg))
                 processed.append((lfile, "g", (p2.flags(lfile),), msg))
         else:
             processed.append(action)
 
     return processed
 
 # Override filemerge to prompt the user about how they wish to merge
 # largefiles. This will handle identical edits, and copy/rename +
 # edit without prompting the user.
 def overridefilemerge(origfn, repo, mynode, orig, fcd, fco, fca):
     # Use better variable names here. Because this is a wrapper we cannot
     # change the variable names in the function declaration.
     fcdest, fcother, fcancestor = fcd, fco, fca
     if not lfutil.isstandin(orig):
         return origfn(repo, mynode, orig, fcdest, fcother, fcancestor)
     else:
         if not fcother.cmp(fcdest): # files identical?
             return None
 
         # backwards, use working dir parent as ancestor
         if fcancestor == fcother:
             fcancestor = fcdest.parents()[0]
 
         if orig != fcother.path():
             repo.ui.status(_('merging %s and %s to %s\n')
                            % (lfutil.splitstandin(orig),
                               lfutil.splitstandin(fcother.path()),
                               lfutil.splitstandin(fcdest.path())))
         else:
             repo.ui.status(_('merging %s\n')
                            % lfutil.splitstandin(fcdest.path()))
 
         if fcancestor.path() != fcother.path() and fcother.data() == \
                 fcancestor.data():
             return 0
         if fcancestor.path() != fcdest.path() and fcdest.data() == \
                 fcancestor.data():
             repo.wwrite(fcdest.path(), fcother.data(), fcother.flags())
             return 0
 
         if repo.ui.promptchoice(_('largefile %s has a merge conflict\n'
                              'keep (l)ocal or take (o)ther?') %
                              lfutil.splitstandin(orig),
                              (_('&Local'), _('&Other')), 0) == 0:
             return 0
         else:
             repo.wwrite(fcdest.path(), fcother.data(), fcother.flags())
             return 0
 
 # Copy first changes the matchers to match standins instead of
 # largefiles.  Then it overrides util.copyfile in that function it
 # checks if the destination largefile already exists. It also keeps a
 # list of copied files so that the largefiles can be copied and the
 # dirstate updated.
 def overridecopy(orig, ui, repo, pats, opts, rename=False):
     # doesn't remove largefile on rename
     if len(pats) < 2:
         # this isn't legal, let the original function deal with it
         return orig(ui, repo, pats, opts, rename)
 
     def makestandin(relpath):
         path = scmutil.canonpath(repo.root, repo.getcwd(), relpath)
         return os.path.join(repo.wjoin(lfutil.standin(path)))
 
     fullpats = scmutil.expandpats(pats)
     dest = fullpats[-1]
 
     if os.path.isdir(dest):
         if not os.path.isdir(makestandin(dest)):
             os.makedirs(makestandin(dest))
     # This could copy both lfiles and normal files in one command,
     # but we don't want to do that. First replace their matcher to
     # only match normal files and run it, then replace it to just
     # match largefiles and run it again.
     nonormalfiles = False
     nolfiles = False
     try:
         try:
             installnormalfilesmatchfn(repo[None].manifest())
             result = orig(ui, repo, pats, opts, rename)
         except util.Abort, e:
             if str(e) != _('no files to copy'):
                 raise e
             else:
                 nonormalfiles = True
             result = 0
     finally:
         restorematchfn()
 
     # The first rename can cause our current working directory to be removed.
     # In that case there is nothing left to copy/rename so just quit.
     try:
         repo.getcwd()
     except OSError:
         return result
 
     try:
         try:
             # When we call orig below it creates the standins but we don't add
             # them to the dir state until later so lock during that time.
             wlock = repo.wlock()
 
             manifest = repo[None].manifest()
             oldmatch = None # for the closure
             def overridematch(ctx, pats=[], opts={}, globbed=False,
                     default='relpath'):
                 newpats = []
                 # The patterns were previously mangled to add the standin
                 # directory; we need to remove that now
                 for pat in pats:
                     if match_.patkind(pat) is None and lfutil.shortname in pat:
                         newpats.append(pat.replace(lfutil.shortname, ''))
                     else:
                         newpats.append(pat)
                 match = oldmatch(ctx, newpats, opts, globbed, default)
                 m = copy.copy(match)
                 lfile = lambda f: lfutil.standin(f) in manifest
                 m._files = [lfutil.standin(f) for f in m._files if lfile(f)]
                 m._fmap = set(m._files)
                 origmatchfn = m.matchfn
                 m.matchfn = lambda f: (lfutil.isstandin(f) and
                                     (f in manifest) and
                                     origmatchfn(lfutil.splitstandin(f)) or
                                     None)
                 return m
             oldmatch = installmatchfn(overridematch)
             listpats = []
             for pat in pats:
                 if match_.patkind(pat) is not None:
                     listpats.append(pat)
                 else:
                     listpats.append(makestandin(pat))
 
             try:
                 origcopyfile = util.copyfile
                 copiedfiles = []
                 def overridecopyfile(src, dest):
                     if (lfutil.shortname in src and
                         dest.startswith(repo.wjoin(lfutil.shortname))):
                         destlfile = dest.replace(lfutil.shortname, '')
                         if not opts['force'] and os.path.exists(destlfile):
                             raise IOError('',
                                 _('destination largefile already exists'))
                     copiedfiles.append((src, dest))
                     origcopyfile(src, dest)
 
                 util.copyfile = overridecopyfile
                 result += orig(ui, repo, listpats, opts, rename)
             finally:
                 util.copyfile = origcopyfile
 
             lfdirstate = lfutil.openlfdirstate(ui, repo)
             for (src, dest) in copiedfiles:
                 if (lfutil.shortname in src and
                     dest.startswith(repo.wjoin(lfutil.shortname))):
                     srclfile = src.replace(repo.wjoin(lfutil.standin('')), '')
                     destlfile = dest.replace(repo.wjoin(lfutil.standin('')), '')
                     destlfiledir = os.path.dirname(repo.wjoin(destlfile)) or '.'
                     if not os.path.isdir(destlfiledir):
                         os.makedirs(destlfiledir)
                     if rename:
                         os.rename(repo.wjoin(srclfile), repo.wjoin(destlfile))
                         lfdirstate.remove(srclfile)
                     else:
                         util.copyfile(repo.wjoin(srclfile),
                                       repo.wjoin(destlfile))
 
                     lfdirstate.add(destlfile)
             lfdirstate.write()
         except util.Abort, e:
             if str(e) != _('no files to copy'):
                 raise e
             else:
                 nolfiles = True
     finally:
         restorematchfn()
         wlock.release()
 
     if nolfiles and nonormalfiles:
         raise util.Abort(_('no files to copy'))
 
     return result
 
 # When the user calls revert, we have to be careful to not revert any
 # changes to other largefiles accidentally. This means we have to keep
 # track of the largefiles that are being reverted so we only pull down
 # the necessary largefiles.
 #
 # Standins are only updated (to match the hash of largefiles) before
 # commits. Update the standins then run the original revert, changing
 # the matcher to hit standins instead of largefiles. Based on the
 # resulting standins update the largefiles. Then return the standins
 # to their proper state
 def overriderevert(orig, ui, repo, *pats, **opts):
     # Because we put the standins in a bad state (by updating them)
     # and then return them to a correct state we need to lock to
     # prevent others from changing them in their incorrect state.
     wlock = repo.wlock()
     try:
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         (modified, added, removed, missing, unknown, ignored, clean) = \
             lfutil.lfdirstatestatus(lfdirstate, repo, repo['.'].rev())
         lfdirstate.write()
         for lfile in modified:
             lfutil.updatestandin(repo, lfutil.standin(lfile))
         for lfile in missing:
             if (os.path.exists(repo.wjoin(lfutil.standin(lfile)))):
                 os.unlink(repo.wjoin(lfutil.standin(lfile)))
 
         try:
             ctx = scmutil.revsingle(repo, opts.get('rev'))
             oldmatch = None # for the closure
             def overridematch(ctx, pats=[], opts={}, globbed=False,
                     default='relpath'):
                 match = oldmatch(ctx, pats, opts, globbed, default)
                 m = copy.copy(match)
                 def tostandin(f):
                     if lfutil.standin(f) in ctx:
                         return lfutil.standin(f)
                     elif lfutil.standin(f) in repo[None]:
                         return None
                     return f
                 m._files = [tostandin(f) for f in m._files]
                 m._files = [f for f in m._files if f is not None]
                 m._fmap = set(m._files)
                 origmatchfn = m.matchfn
                 def matchfn(f):
                     if lfutil.isstandin(f):
                         # We need to keep track of what largefiles are being
                         # matched so we know which ones to update later --
                         # otherwise we accidentally revert changes to other
                         # largefiles. This is repo-specific, so duckpunch the
                         # repo object to keep the list of largefiles for us
                         # later.
                         if origmatchfn(lfutil.splitstandin(f)) and \
                                 (f in repo[None] or f in ctx):
                             lfileslist = getattr(repo, '_lfilestoupdate', [])
                             lfileslist.append(lfutil.splitstandin(f))
                             repo._lfilestoupdate = lfileslist
                             return True
                         else:
                             return False
                     return origmatchfn(f)
                 m.matchfn = matchfn
                 return m
             oldmatch = installmatchfn(overridematch)
             scmutil.match
             matches = overridematch(repo[None], pats, opts)
             orig(ui, repo, *pats, **opts)
         finally:
             restorematchfn()
         lfileslist = getattr(repo, '_lfilestoupdate', [])
         lfcommands.updatelfiles(ui, repo, filelist=lfileslist,
                                 printmessage=False)
 
         # empty out the largefiles list so we start fresh next time
         repo._lfilestoupdate = []
         for lfile in modified:
             if lfile in lfileslist:
                 if os.path.exists(repo.wjoin(lfutil.standin(lfile))) and lfile\
                         in repo['.']:
                     lfutil.writestandin(repo, lfutil.standin(lfile),
                         repo['.'][lfile].data().strip(),
                         'x' in repo['.'][lfile].flags())
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         for lfile in added:
             standin = lfutil.standin(lfile)
             if standin not in ctx and (standin in matches or opts.get('all')):
                 if lfile in lfdirstate:
                     lfdirstate.drop(lfile)
                 util.unlinkpath(repo.wjoin(standin))
         lfdirstate.write()
     finally:
         wlock.release()
 
 def hgupdaterepo(orig, repo, node, overwrite):
     if not overwrite:
         # Only call updatelfiles on the standins that have changed to save time
         oldstandins = lfutil.getstandinsstate(repo)
 
     result = orig(repo, node, overwrite)
 
     filelist = None
     if not overwrite:
         newstandins = lfutil.getstandinsstate(repo)
         filelist = lfutil.getlfilestoupdate(oldstandins, newstandins)
     lfcommands.updatelfiles(repo.ui, repo, filelist=filelist)
     return result
 
 def hgmerge(orig, repo, node, force=None, remind=True):
     result = orig(repo, node, force, remind)
     lfcommands.updatelfiles(repo.ui, repo)
     return result
 
 # When we rebase a repository with remotely changed largefiles, we need to
 # take some extra care so that the largefiles are correctly updated in the
 # working copy
 def overridepull(orig, ui, repo, source=None, **opts):
     revsprepull = len(repo)
     if opts.get('rebase', False):
         repo._isrebasing = True
         try:
             if opts.get('update'):
                 del opts['update']
                 ui.debug('--update and --rebase are not compatible, ignoring '
                          'the update flag\n')
             del opts['rebase']
             cmdutil.bailifchanged(repo)
             origpostincoming = commands.postincoming
             def _dummy(*args, **kwargs):
                 pass
             commands.postincoming = _dummy
             if not source:
                 source = 'default'
             repo.lfpullsource = source
             try:
                 result = commands.pull(ui, repo, source, **opts)
             finally:
                 commands.postincoming = origpostincoming
             revspostpull = len(repo)
             if revspostpull > revsprepull:
                 result = result or rebase.rebase(ui, repo)
         finally:
             repo._isrebasing = False
     else:
         if not source:
             source = 'default'
         repo.lfpullsource = source
         oldheads = lfutil.getcurrentheads(repo)
         result = orig(ui, repo, source, **opts)
         if opts.get('cache_largefiles'):
             # If you are pulling from a remote location that is not your
             # default location, you may want to cache largefiles for new heads
             # that have been pulled, so you can easily merge or rebase with
             # them later
             numcached = 0
             heads = lfutil.getcurrentheads(repo)
             newheads = set(heads).difference(set(oldheads))
             if len(newheads) > 0:
                 ui.status(_("caching largefiles for %s heads\n") %
                           len(newheads))
             for head in newheads:
                 (cached, missing) = lfcommands.cachelfiles(ui, repo, head)
                 numcached += len(cached)
             ui.status(_("%d largefiles cached\n") % numcached)
     if opts.get('all_largefiles'):
         revspostpull = len(repo)
         revs = []
         for rev in xrange(revsprepull, revspostpull):
             revs.append(repo[rev].rev())
         lfcommands.downloadlfiles(ui, repo, revs)
     return result
 
 def overrideclone(orig, ui, source, dest=None, **opts):
     d = dest
     if d is None:
         d = hg.defaultdest(source)
     if opts.get('all_largefiles') and not hg.islocal(d):
             raise util.Abort(_(
             '--all-largefiles is incompatible with non-local destination %s' %
             d))
 
     return orig(ui, source, dest, **opts)
 
 def hgclone(orig, ui, opts, *args, **kwargs):
     result = orig(ui, opts, *args, **kwargs)
 
     if result is not None:
         sourcerepo, destrepo = result
         repo = destrepo.local()
 
         # Caching is implicitly limited to 'rev' option, since the dest repo was
         # truncated at that point.  The user may expect a download count with
         # this option, so attempt whether or not this is a largefile repo.
         if opts.get('all_largefiles'):
             success, missing = lfcommands.downloadlfiles(ui, repo, None)
 
             if missing != 0:
                 return None
 
     return result
 
 def overriderebase(orig, ui, repo, **opts):
     repo._isrebasing = True
     try:
         return orig(ui, repo, **opts)
     finally:
         repo._isrebasing = False
 
 def overridearchive(orig, repo, dest, node, kind, decode=True, matchfn=None,
             prefix=None, mtime=None, subrepos=None):
     # No need to lock because we are only reading history and
     # largefile caches, neither of which are modified.
     lfcommands.cachelfiles(repo.ui, repo, node)
 
     if kind not in archival.archivers:
         raise util.Abort(_("unknown archive type '%s'") % kind)
 
     ctx = repo[node]
 
     if kind == 'files':
         if prefix:
             raise util.Abort(
                 _('cannot give prefix when archiving to files'))
     else:
         prefix = archival.tidyprefix(dest, kind, prefix)
 
     def write(name, mode, islink, getdata):
         if matchfn and not matchfn(name):
             return
         data = getdata()
         if decode:
             data = repo.wwritedata(name, data)
         archiver.addfile(prefix + name, mode, islink, data)
 
     archiver = archival.archivers[kind](dest, mtime or ctx.date()[0])
 
     if repo.ui.configbool("ui", "archivemeta", True):
         def metadata():
             base = 'repo: %s\nnode: %s\nbranch: %s\n' % (
                 hex(repo.changelog.node(0)), hex(node), ctx.branch())
 
             tags = ''.join('tag: %s\n' % t for t in ctx.tags()
                            if repo.tagtype(t) == 'global')
             if not tags:
                 repo.ui.pushbuffer()
                 opts = {'template': '{latesttag}\n{latesttagdistance}',
                         'style': '', 'patch': None, 'git': None}
                 cmdutil.show_changeset(repo.ui, repo, opts).show(ctx)
                 ltags, dist = repo.ui.popbuffer().split('\n')
                 tags = ''.join('latesttag: %s\n' % t for t in ltags.split(':'))
                 tags += 'latesttagdistance: %s\n' % dist
 
             return base + tags
 
         write('.hg_archival.txt', 0644, False, metadata)
 
     for f in ctx:
         ff = ctx.flags(f)
         getdata = ctx[f].data
         if lfutil.isstandin(f):
             path = lfutil.findfile(repo, getdata().strip())
             if path is None:
                 raise util.Abort(
                     _('largefile %s not found in repo store or system cache')
                     % lfutil.splitstandin(f))
             f = lfutil.splitstandin(f)
 
             def getdatafn():
                 fd = None
                 try:
                     fd = open(path, 'rb')
                     return fd.read()
                 finally:
                     if fd:
                         fd.close()
 
             getdata = getdatafn
         write(f, 'x' in ff and 0755 or 0644, 'l' in ff, getdata)
 
     if subrepos:
         for subpath in sorted(ctx.substate):
             sub = ctx.sub(subpath)
             submatch = match_.narrowmatcher(subpath, matchfn)
             sub.archive(repo.ui, archiver, prefix, submatch)
 
     archiver.done()
 
 def hgsubrepoarchive(orig, repo, ui, archiver, prefix, match=None):
     repo._get(repo._state + ('hg',))
     rev = repo._state[1]
     ctx = repo._repo[rev]
 
     lfcommands.cachelfiles(ui, repo._repo, ctx.node())
 
     def write(name, mode, islink, getdata):
         # At this point, the standin has been replaced with the largefile name,
         # so the normal matcher works here without the lfutil variants.
         if match and not match(f):
             return
         data = getdata()
 
         archiver.addfile(prefix + repo._path + '/' + name, mode, islink, data)
 
     for f in ctx:
         ff = ctx.flags(f)
         getdata = ctx[f].data
         if lfutil.isstandin(f):
             path = lfutil.findfile(repo._repo, getdata().strip())
             if path is None:
                 raise util.Abort(
                     _('largefile %s not found in repo store or system cache')
                     % lfutil.splitstandin(f))
             f = lfutil.splitstandin(f)
 
             def getdatafn():
                 fd = None
                 try:
                     fd = open(os.path.join(prefix, path), 'rb')
                     return fd.read()
                 finally:
                     if fd:
                         fd.close()
 
             getdata = getdatafn
 
         write(f, 'x' in ff and 0755 or 0644, 'l' in ff, getdata)
 
     for subpath in sorted(ctx.substate):
         sub = ctx.sub(subpath)
         submatch = match_.narrowmatcher(subpath, match)
         sub.archive(ui, archiver, os.path.join(prefix, repo._path) + '/',
                     submatch)
 
 # If a largefile is modified, the change is not reflected in its
 # standin until a commit. cmdutil.bailifchanged() raises an exception
 # if the repo has uncommitted changes. Wrap it to also check if
 # largefiles were changed. This is used by bisect and backout.
 def overridebailifchanged(orig, repo):
     orig(repo)
     repo.lfstatus = True
     modified, added, removed, deleted = repo.status()[:4]
     repo.lfstatus = False
     if modified or added or removed or deleted:
         raise util.Abort(_('outstanding uncommitted changes'))
 
 # Fetch doesn't use cmdutil.bailifchanged so override it to add the check
 def overridefetch(orig, ui, repo, *pats, **opts):
     repo.lfstatus = True
     modified, added, removed, deleted = repo.status()[:4]
     repo.lfstatus = False
     if modified or added or removed or deleted:
         raise util.Abort(_('outstanding uncommitted changes'))
     return orig(ui, repo, *pats, **opts)
 
 def overrideforget(orig, ui, repo, *pats, **opts):
     installnormalfilesmatchfn(repo[None].manifest())
     result = orig(ui, repo, *pats, **opts)
     restorematchfn()
     m = scmutil.match(repo[None], pats, opts)
 
     try:
         repo.lfstatus = True
         s = repo.status(match=m, clean=True)
     finally:
         repo.lfstatus = False
     forget = sorted(s[0] + s[1] + s[3] + s[6])
     forget = [f for f in forget if lfutil.standin(f) in repo[None].manifest()]
 
     for f in forget:
         if lfutil.standin(f) not in repo.dirstate and not \
                 os.path.isdir(m.rel(lfutil.standin(f))):
             ui.warn(_('not removing %s: file is already untracked\n')
                     % m.rel(f))
             result = 1
 
     for f in forget:
         if ui.verbose or not m.exact(f):
             ui.status(_('removing %s\n') % m.rel(f))
 
     # Need to lock because standin files are deleted then removed from the
     # repository and we could race in-between.
     wlock = repo.wlock()
     try:
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         for f in forget:
             if lfdirstate[f] == 'a':
                 lfdirstate.drop(f)
             else:
                 lfdirstate.remove(f)
         lfdirstate.write()
         standins = [lfutil.standin(f) for f in forget]
         for f in standins:
             util.unlinkpath(repo.wjoin(f), ignoremissing=True)
         repo[None].forget(standins)
     finally:
         wlock.release()
 
     return result
 
 def getoutgoinglfiles(ui, repo, dest=None, **opts):
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     dest, branches = hg.parseurl(dest, opts.get('branch'))
     revs, checkout = hg.addbranchrevs(repo, repo, branches, opts.get('rev'))
     if revs:
         revs = [repo.lookup(rev) for rev in scmutil.revrange(repo, revs)]
 
     try:
         remote = hg.peer(repo, opts, dest)
     except error.RepoError:
         return None
     outgoing = discovery.findcommonoutgoing(repo, remote.peer(), force=False)
     if not outgoing.missing:
         return outgoing.missing
     o = repo.changelog.nodesbetween(outgoing.missing, revs)[0]
     if opts.get('newest_first'):
         o.reverse()
 
     toupload = set()
     for n in o:
         parents = [p for p in repo.changelog.parents(n) if p != node.nullid]
         ctx = repo[n]
         files = set(ctx.files())
         if len(parents) == 2:
             mc = ctx.manifest()
             mp1 = ctx.parents()[0].manifest()
             mp2 = ctx.parents()[1].manifest()
             for f in mp1:
                 if f not in mc:
                         files.add(f)
             for f in mp2:
                 if f not in mc:
                     files.add(f)
             for f in mc:
                 if mc[f] != mp1.get(f, None) or mc[f] != mp2.get(f, None):
                     files.add(f)
         toupload = toupload.union(
             set([f for f in files if lfutil.isstandin(f) and f in ctx]))
     return sorted(toupload)
 
 def overrideoutgoing(orig, ui, repo, dest=None, **opts):
     result = orig(ui, repo, dest, **opts)
 
     if opts.pop('large', None):
         toupload = getoutgoinglfiles(ui, repo, dest, **opts)
         if toupload is None:
             ui.status(_('largefiles: No remote repo\n'))
         elif not toupload:
             ui.status(_('largefiles: no files to upload\n'))
         else:
             ui.status(_('largefiles to upload:\n'))
             for file in toupload:
                 ui.status(lfutil.splitstandin(file) + '\n')
             ui.status('\n')
 
     return result
 
 def overridesummary(orig, ui, repo, *pats, **opts):
     try:
         repo.lfstatus = True
         orig(ui, repo, *pats, **opts)
     finally:
         repo.lfstatus = False
 
     if opts.pop('large', None):
         toupload = getoutgoinglfiles(ui, repo, None, **opts)
         if toupload is None:
             # i18n: column positioning for "hg summary"
             ui.status(_('largefiles: (no remote repo)\n'))
         elif not toupload:
             # i18n: column positioning for "hg summary"
             ui.status(_('largefiles: (no files to upload)\n'))
         else:
             # i18n: column positioning for "hg summary"
             ui.status(_('largefiles: %d to upload\n') % len(toupload))
 
 def scmutiladdremove(orig, repo, pats=[], opts={}, dry_run=None,
                      similarity=None):
     if not lfutil.islfilesrepo(repo):
         return orig(repo, pats, opts, dry_run, similarity)
     # Get the list of missing largefiles so we can remove them
     lfdirstate = lfutil.openlfdirstate(repo.ui, repo)
     s = lfdirstate.status(match_.always(repo.root, repo.getcwd()), [], False,
         False, False)
     (unsure, modified, added, removed, missing, unknown, ignored, clean) = s
 
     # Call into the normal remove code, but the removing of the standin, we want
     # to have handled by original addremove.  Monkey patching here makes sure
     # we don't remove the standin in the largefiles code, preventing a very
     # confused state later.
     if missing:
         m = [repo.wjoin(f) for f in missing]
         repo._isaddremove = True
         removelargefiles(repo.ui, repo, *m, **opts)
         repo._isaddremove = False
     # Call into the normal add code, and any files that *should* be added as
     # largefiles will be
     addlargefiles(repo.ui, repo, *pats, **opts)
     # Now that we've handled largefiles, hand off to the original addremove
     # function to take care of the rest.  Make sure it doesn't do anything with
     # largefiles by installing a matcher that will ignore them.
     installnormalfilesmatchfn(repo[None].manifest())
     result = orig(repo, pats, opts, dry_run, similarity)
     restorematchfn()
     return result
 
 # Calling purge with --all will cause the largefiles to be deleted.
 # Override repo.status to prevent this from happening.
 def overridepurge(orig, ui, repo, *dirs, **opts):
     # XXX large file status is buggy when used on repo proxy.
     # XXX this needs to be investigate.
     repo = repo.unfiltered()
     oldstatus = repo.status
     def overridestatus(node1='.', node2=None, match=None, ignored=False,
                         clean=False, unknown=False, listsubrepos=False):
         r = oldstatus(node1, node2, match, ignored, clean, unknown,
                       listsubrepos)
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         modified, added, removed, deleted, unknown, ignored, clean = r
         unknown = [f for f in unknown if lfdirstate[f] == '?']
         ignored = [f for f in ignored if lfdirstate[f] == '?']
         return modified, added, removed, deleted, unknown, ignored, clean
     repo.status = overridestatus
     orig(ui, repo, *dirs, **opts)
     repo.status = oldstatus
 
 def overriderollback(orig, ui, repo, **opts):
     result = orig(ui, repo, **opts)
     merge.update(repo, node=None, branchmerge=False, force=True,
         partial=lfutil.isstandin)
     wlock = repo.wlock()
     try:
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         lfiles = lfutil.listlfiles(repo)
         oldlfiles = lfutil.listlfiles(repo, repo[None].parents()[0].rev())
         for file in lfiles:
             if file in oldlfiles:
                 lfdirstate.normallookup(file)
             else:
                 lfdirstate.add(file)
         lfdirstate.write()
     finally:
         wlock.release()
     return result
 
 def overridetransplant(orig, ui, repo, *revs, **opts):
     try:
         oldstandins = lfutil.getstandinsstate(repo)
         repo._istransplanting = True
         result = orig(ui, repo, *revs, **opts)
         newstandins = lfutil.getstandinsstate(repo)
         filelist = lfutil.getlfilestoupdate(oldstandins, newstandins)
         lfcommands.updatelfiles(repo.ui, repo, filelist=filelist,
                                 printmessage=True)
     finally:
         repo._istransplanting = False
     return result
 
 def overridecat(orig, ui, repo, file1, *pats, **opts):
     ctx = scmutil.revsingle(repo, opts.get('rev'))
     err = 1
     notbad = set()
     m = scmutil.match(ctx, (file1,) + pats, opts)
     origmatchfn = m.matchfn
     def lfmatchfn(f):
         lf = lfutil.splitstandin(f)
         if lf is None:
             return origmatchfn(f)
         notbad.add(lf)
         return origmatchfn(lf)
     m.matchfn = lfmatchfn
     m.bad = lambda f, msg: f not in notbad
     for f in ctx.walk(m):
         lf = lfutil.splitstandin(f)
         if lf is None:
             err = orig(ui, repo, f, **opts)
         else:
             err = lfcommands.catlfile(repo, lf, ctx.rev(), opts.get('output'))
     return err
 
 def mercurialsinkbefore(orig, sink):
     sink.repo._isconverting = True
     orig(sink)
 
 def mercurialsinkafter(orig, sink):
     sink.repo._isconverting = False
     orig(sink)

mercurial/merge.py

@@ -1,716 +1,724
 # merge.py - directory-level update/merge handling for Mercurial
 #
 # Copyright 2006, 2007 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from node import nullid, nullrev, hex, bin
 from i18n import _
 import error, util, filemerge, copies, subrepo, worker
 import errno, os, shutil
 
 class mergestate(object):
     '''track 3-way merge state of individual files'''
     def __init__(self, repo):
         self._repo = repo
         self._dirty = False
         self._read()
     def reset(self, node=None):
         self._state = {}
         if node:
             self._local = node
         shutil.rmtree(self._repo.join("merge"), True)
         self._dirty = False
     def _read(self):
         self._state = {}
         try:
             f = self._repo.opener("merge/state")
             for i, l in enumerate(f):
                 if i == 0:
                     self._local = bin(l[:-1])
                 else:
                     bits = l[:-1].split("\0")
                     self._state[bits[0]] = bits[1:]
             f.close()
         except IOError, err:
             if err.errno != errno.ENOENT:
                 raise
         self._dirty = False
     def commit(self):
         if self._dirty:
             f = self._repo.opener("merge/state", "w")
             f.write(hex(self._local) + "\n")
             for d, v in self._state.iteritems():
                 f.write("\0".join([d] + v) + "\n")
             f.close()
             self._dirty = False
     def add(self, fcl, fco, fca, fd):
         hash = util.sha1(fcl.path()).hexdigest()
         self._repo.opener.write("merge/" + hash, fcl.data())
         self._state[fd] = ['u', hash, fcl.path(), fca.path(),
                            hex(fca.filenode()), fco.path(), fcl.flags()]
         self._dirty = True
     def __contains__(self, dfile):
         return dfile in self._state
     def __getitem__(self, dfile):
         return self._state[dfile][0]
     def __iter__(self):
         l = self._state.keys()
         l.sort()
         for f in l:
             yield f
     def mark(self, dfile, state):
         self._state[dfile][0] = state
         self._dirty = True
     def resolve(self, dfile, wctx, octx):
         if self[dfile] == 'r':
             return 0
         state, hash, lfile, afile, anode, ofile, flags = self._state[dfile]
         fcd = wctx[dfile]
         fco = octx[ofile]
         fca = self._repo.filectx(afile, fileid=anode)
         # "premerge" x flags
         flo = fco.flags()
         fla = fca.flags()
         if 'x' in flags + flo + fla and 'l' not in flags + flo + fla:
             if fca.node() == nullid:
                 self._repo.ui.warn(_('warning: cannot merge flags for %s\n') %
                                    afile)
             elif flags == fla:
                 flags = flo
         # restore local
         f = self._repo.opener("merge/" + hash)
         self._repo.wwrite(dfile, f.read(), flags)
         f.close()
         r = filemerge.filemerge(self._repo, self._local, lfile, fcd, fco, fca)
         if r is None:
             # no real conflict
             del self._state[dfile]
         elif not r:
             self.mark(dfile, 'r')
         return r
 
 def _checkunknownfile(repo, wctx, mctx, f):
     return (not repo.dirstate._ignore(f)
         and os.path.isfile(repo.wjoin(f))
         and repo.dirstate.normalize(f) not in repo.dirstate
         and mctx[f].cmp(wctx[f]))
 
 def _checkunknown(repo, wctx, mctx):
     "check for collisions between unknown files and files in mctx"
 
     error = False
     for f in mctx:
         if f not in wctx and _checkunknownfile(repo, wctx, mctx, f):
             error = True
             wctx._repo.ui.warn(_("%s: untracked file differs\n") % f)
     if error:
         raise util.Abort(_("untracked files in working directory differ "
                            "from files in requested revision"))
 
 def _remains(f, m, ma, workingctx=False):
     """check whether specified file remains after merge.
 
     It is assumed that specified file is not contained in the manifest
     of the other context.
     """
     if f in ma:
         n = m[f]
         if n != ma[f]:
             return True # because it is changed locally
             # even though it doesn't remain, if "remote deleted" is
             # chosen in manifestmerge()
         elif workingctx and n[20:] == "a":
             return True # because it is added locally (linear merge specific)
         else:
             return False # because it is removed remotely
     else:
         return True # because it is added locally
 
 def _checkcollision(mctx, extractxs):
     "check for case folding collisions in the destination context"
     folded = {}
     for fn in mctx:
         fold = util.normcase(fn)
         if fold in folded:
             raise util.Abort(_("case-folding collision between %s and %s")
                              % (fn, folded[fold]))
         folded[fold] = fn
 
     if extractxs:
         wctx, actx = extractxs
         # class to delay looking up copy mapping
         class pathcopies(object):
             @util.propertycache
             def map(self):
                 # {dst@mctx: src@wctx} copy mapping
                 return copies.pathcopies(wctx, mctx)
         pc = pathcopies()
 
         for fn in wctx:
             fold = util.normcase(fn)
             mfn = folded.get(fold, None)
             if (mfn and mfn != fn and pc.map.get(mfn) != fn and
                 _remains(fn, wctx.manifest(), actx.manifest(), True) and
                 _remains(mfn, mctx.manifest(), actx.manifest())):
                 raise util.Abort(_("case-folding collision between %s and %s")
                                  % (mfn, fn))
 
 def _forgetremoved(wctx, mctx, branchmerge):
     """
     Forget removed files
 
     If we're jumping between revisions (as opposed to merging), and if
     neither the working directory nor the target rev has the file,
     then we need to remove it from the dirstate, to prevent the
     dirstate from listing the file when it is no longer in the
     manifest.
 
     If we're merging, and the other revision has removed a file
     that is not present in the working directory, we need to mark it
     as removed.
     """
 
     actions = []
     state = branchmerge and 'r' or 'f'
     for f in wctx.deleted():
         if f not in mctx:
             actions.append((f, state, None, "forget deleted"))
 
     if not branchmerge:
         for f in wctx.removed():
             if f not in mctx:
                 actions.append((f, "f", None, "forget removed"))
 
     return actions
 
-def manifestmerge(repo, wctx, p2, pa, branchmerge, force, partial):
+def manifestmerge(repo, wctx, p2, pa, branchmerge, force, partial,
+                  acceptremote=False):
     """
     Merge p1 and p2 with ancestor pa and generate merge action list
 
     branchmerge and force are as passed in to update
     partial = function to filter file lists
+    acceptremote = accept the incoming changes without prompting
     """
 
     overwrite = force and not branchmerge
     actions, copy, movewithdir = [], {}, {}
 
     followcopies = False
     if overwrite:
         pa = wctx
     elif pa == p2: # backwards
         pa = wctx.p1()
     elif not branchmerge and not wctx.dirty(missing=True):
         pass
     elif pa and repo.ui.configbool("merge", "followcopies", True):
         followcopies = True
 
     # manifests fetched in order are going to be faster, so prime the caches
     [x.manifest() for x in
      sorted(wctx.parents() + [p2, pa], key=lambda x: x.rev())]
 
     if followcopies:
         ret = copies.mergecopies(repo, wctx, p2, pa)
         copy, movewithdir, diverge, renamedelete = ret
         for of, fl in diverge.iteritems():
             actions.append((of, "dr", (fl,), "divergent renames"))
         for of, fl in renamedelete.iteritems():
             actions.append((of, "rd", (fl,), "rename and delete"))
 
     repo.ui.note(_("resolving manifests\n"))
     repo.ui.debug(" branchmerge: %s, force: %s, partial: %s\n"
                   % (bool(branchmerge), bool(force), bool(partial)))
     repo.ui.debug(" ancestor: %s, local: %s, remote: %s\n" % (pa, wctx, p2))
 
     m1, m2, ma = wctx.manifest(), p2.manifest(), pa.manifest()
     copied = set(copy.values())
     copied.update(movewithdir.values())
 
     if '.hgsubstate' in m1:
         # check whether sub state is modified
         for s in sorted(wctx.substate):
             if wctx.sub(s).dirty():
                 m1['.hgsubstate'] += "+"
                 break
 
     aborts, prompts = [], []
     # Compare manifests
     for f, n in m1.iteritems():
         if partial and not partial(f):
             continue
         if f in m2:
             n2 = m2[f]
             fl1, fl2, fla = m1.flags(f), m2.flags(f), ma.flags(f)
             nol = 'l' not in fl1 + fl2 + fla
             a = ma.get(f, nullid)
             if n == n2 and fl1 == fl2:
                 pass # same - keep local
             elif n2 == a and fl2 == fla:
                 pass # remote unchanged - keep local
             elif n == a and fl1 == fla: # local unchanged - use remote
                 if n == n2: # optimization: keep local content
                     actions.append((f, "e", (fl2,), "update permissions"))
                 else:
                     actions.append((f, "g", (fl2,), "remote is newer"))
             elif nol and n2 == a: # remote only changed 'x'
                 actions.append((f, "e", (fl2,), "update permissions"))
             elif nol and n == a: # local only changed 'x'
                 actions.append((f, "g", (fl1,), "remote is newer"))
             else: # both changed something
                 actions.append((f, "m", (f, f, False), "versions differ"))
         elif f in copied: # files we'll deal with on m2 side
             pass
         elif f in movewithdir: # directory rename
             f2 = movewithdir[f]
             actions.append((f, "d", (None, f2, m1.flags(f)),
                             "remote renamed directory to " + f2))
         elif f in copy:
             f2 = copy[f]
             actions.append((f, "m", (f2, f, False),
                             "local copied/moved to " + f2))
         elif f in ma: # clean, a different, no remote
             if n != ma[f]:
                 prompts.append((f, "cd")) # prompt changed/deleted
             elif n[20:] == "a": # added, no remote
                 actions.append((f, "f", None, "remote deleted"))
             else:
                 actions.append((f, "r", None, "other deleted"))
 
     for f, n in m2.iteritems():
         if partial and not partial(f):
             continue
         if f in m1 or f in copied: # files already visited
             continue
         if f in movewithdir:
             f2 = movewithdir[f]
             actions.append((None, "d", (f, f2, m2.flags(f)),
                             "local renamed directory to " + f2))
         elif f in copy:
             f2 = copy[f]
             if f2 in m2:
                 actions.append((f2, "m", (f, f, False),
                                 "remote copied to " + f))
             else:
                 actions.append((f2, "m", (f, f, True),
                                 "remote moved to " + f))
         elif f not in ma:
             # local unknown, remote created: the logic is described by the
             # following table:
             #
             # force  branchmerge  different  |  action
             #   n         *           n      |    get
             #   n         *           y      |   abort
             #   y         n           *      |    get
             #   y         y           n      |    get
             #   y         y           y      |   merge
             #
             # Checking whether the files are different is expensive, so we
             # don't do that when we can avoid it.
             if force and not branchmerge:
                 actions.append((f, "g", (m2.flags(f),), "remote created"))
             else:
                 different = _checkunknownfile(repo, wctx, p2, f)
                 if force and branchmerge and different:
                     actions.append((f, "m", (f, f, False),
                                     "remote differs from untracked local"))
                 elif not force and different:
                     aborts.append((f, "ud"))
                 else:
                     actions.append((f, "g", (m2.flags(f),), "remote created"))
         elif n != ma[f]:
             prompts.append((f, "dc")) # prompt deleted/changed
 
     for f, m in sorted(aborts):
         if m == "ud":
             repo.ui.warn(_("%s: untracked file differs\n") % f)
         else: assert False, m
     if aborts:
         raise util.Abort(_("untracked files in working directory differ "
                            "from files in requested revision"))
 
     for f, m in sorted(prompts):
         if m == "cd":
-            if repo.ui.promptchoice(
+            if acceptremote:
+                actions.append((f, "r", None, "remote delete"))
+            elif repo.ui.promptchoice(
                 _("local changed %s which remote deleted\n"
                   "use (c)hanged version or (d)elete?") % f,
                 (_("&Changed"), _("&Delete")), 0):
                 actions.append((f, "r", None, "prompt delete"))
             else:
                 actions.append((f, "a", None, "prompt keep"))
         elif m == "dc":
-            if repo.ui.promptchoice(
+            if acceptremote:
+                actions.append((f, "g", (m2.flags(f),), "remote recreating"))
+            elif repo.ui.promptchoice(
                 _("remote changed %s which local deleted\n"
                   "use (c)hanged version or leave (d)eleted?") % f,
                 (_("&Changed"), _("&Deleted")), 0) == 0:
                 actions.append((f, "g", (m2.flags(f),), "prompt recreating"))
         else: assert False, m
     return actions
 
 def actionkey(a):
     return a[1] == "r" and -1 or 0, a
 
 def getremove(repo, mctx, overwrite, args):
     """apply usually-non-interactive updates to the working directory
 
     mctx is the context to be merged into the working copy
 
     yields tuples for progress updates
     """
     verbose = repo.ui.verbose
     unlink = util.unlinkpath
     wjoin = repo.wjoin
     fctx = mctx.filectx
     wwrite = repo.wwrite
     audit = repo.wopener.audit
     i = 0
     for arg in args:
         f = arg[0]
         if arg[1] == 'r':
             if verbose:
                 repo.ui.note(_("removing %s\n") % f)
             audit(f)
             try:
                 unlink(wjoin(f), ignoremissing=True)
             except OSError, inst:
                 repo.ui.warn(_("update failed to remove %s: %s!\n") %
                              (f, inst.strerror))
         else:
             if verbose:
                 repo.ui.note(_("getting %s\n") % f)
             wwrite(f, fctx(f).data(), arg[2][0])
         if i == 100:
             yield i, f
             i = 0
         i += 1
     if i > 0:
         yield i, f
 
 def applyupdates(repo, actions, wctx, mctx, actx, overwrite):
     """apply the merge action list to the working directory
 
     wctx is the working copy context
     mctx is the context to be merged into the working copy
     actx is the context of the common ancestor
 
     Return a tuple of counts (updated, merged, removed, unresolved) that
     describes how many files were affected by the update.
     """
 
     updated, merged, removed, unresolved = 0, 0, 0, 0
     ms = mergestate(repo)
     ms.reset(wctx.p1().node())
     moves = []
     actions.sort(key=actionkey)
 
     # prescan for merges
     for a in actions:
         f, m, args, msg = a
         repo.ui.debug(" %s: %s -> %s\n" % (f, msg, m))
         if m == "m": # merge
             f2, fd, move = args
             if fd == '.hgsubstate': # merged internally
                 continue
             repo.ui.debug("  preserving %s for resolve of %s\n" % (f, fd))
             fcl = wctx[f]
             fco = mctx[f2]
             if mctx == actx: # backwards, use working dir parent as ancestor
                 if fcl.parents():
                     fca = fcl.p1()
                 else:
                     fca = repo.filectx(f, fileid=nullrev)
             else:
                 fca = fcl.ancestor(fco, actx)
             if not fca:
                 fca = repo.filectx(f, fileid=nullrev)
             ms.add(fcl, fco, fca, fd)
             if f != fd and move:
                 moves.append(f)
 
     audit = repo.wopener.audit
 
     # remove renamed files after safely stored
     for f in moves:
         if os.path.lexists(repo.wjoin(f)):
             repo.ui.debug("removing %s\n" % f)
             audit(f)
             util.unlinkpath(repo.wjoin(f))
 
     numupdates = len(actions)
     workeractions = [a for a in actions if a[1] in 'gr']
     updated = len([a for a in workeractions if a[1] == 'g'])
     removed = len([a for a in workeractions if a[1] == 'r'])
     actions = [a for a in actions if a[1] not in 'gr']
 
     hgsub = [a[1] for a in workeractions if a[0] == '.hgsubstate']
     if hgsub and hgsub[0] == 'r':
         subrepo.submerge(repo, wctx, mctx, wctx, overwrite)
 
     z = 0
     prog = worker.worker(repo.ui, 0.001, getremove, (repo, mctx, overwrite),
                          workeractions)
     for i, item in prog:
         z += i
         repo.ui.progress(_('updating'), z, item=item, total=numupdates,
                          unit=_('files'))
 
     if hgsub and hgsub[0] == 'g':
         subrepo.submerge(repo, wctx, mctx, wctx, overwrite)
 
     _updating = _('updating')
     _files = _('files')
     progress = repo.ui.progress
 
     for i, a in enumerate(actions):
         f, m, args, msg = a
         progress(_updating, z + i + 1, item=f, total=numupdates, unit=_files)
         if m == "m": # merge
             if fd == '.hgsubstate': # subrepo states need updating
                 subrepo.submerge(repo, wctx, mctx, wctx.ancestor(mctx),
                                  overwrite)
                 continue
             f2, fd, move = args
             audit(fd)
             r = ms.resolve(fd, wctx, mctx)
             if r is not None and r > 0:
                 unresolved += 1
             else:
                 if r is None:
                     updated += 1
                 else:
                     merged += 1
         elif m == "d": # directory rename
             f2, fd, flags = args
             if f:
                 repo.ui.note(_("moving %s to %s\n") % (f, fd))
                 audit(f)
                 repo.wwrite(fd, wctx.filectx(f).data(), flags)
                 util.unlinkpath(repo.wjoin(f))
             if f2:
                 repo.ui.note(_("getting %s to %s\n") % (f2, fd))
                 repo.wwrite(fd, mctx.filectx(f2).data(), flags)
             updated += 1
         elif m == "dr": # divergent renames
             fl, = args
             repo.ui.warn(_("note: possible conflict - %s was renamed "
                            "multiple times to:\n") % f)
             for nf in fl:
                 repo.ui.warn(" %s\n" % nf)
         elif m == "rd": # rename and delete
             fl, = args
             repo.ui.warn(_("note: possible conflict - %s was deleted "
                            "and renamed to:\n") % f)
             for nf in fl:
                 repo.ui.warn(" %s\n" % nf)
         elif m == "e": # exec
             flags, = args
             audit(f)
             util.setflags(repo.wjoin(f), 'l' in flags, 'x' in flags)
             updated += 1
     ms.commit()
     progress(_updating, None, total=numupdates, unit=_files)
 
     return updated, merged, removed, unresolved
 
-def calculateupdates(repo, tctx, mctx, ancestor, branchmerge, force, partial):
+def calculateupdates(repo, tctx, mctx, ancestor, branchmerge, force, partial,
+                     acceptremote=False):
     "Calculate the actions needed to merge mctx into tctx"
     actions = []
     folding = not util.checkcase(repo.path)
     if folding:
         # collision check is not needed for clean update
         if (not branchmerge and
             (force or not tctx.dirty(missing=True, branch=False))):
             _checkcollision(mctx, None)
         else:
             _checkcollision(mctx, (tctx, ancestor))
     actions += manifestmerge(repo, tctx, mctx,
                              ancestor,
                              branchmerge, force,
-                             partial)
+                             partial, acceptremote)
     if tctx.rev() is None:
         actions += _forgetremoved(tctx, mctx, branchmerge)
     return actions
 
 def recordupdates(repo, actions, branchmerge):
     "record merge actions to the dirstate"
 
     for a in actions:
         f, m, args, msg = a
         if m == "r": # remove
             if branchmerge:
                 repo.dirstate.remove(f)
             else:
                 repo.dirstate.drop(f)
         elif m == "a": # re-add
             if not branchmerge:
                 repo.dirstate.add(f)
         elif m == "f": # forget
             repo.dirstate.drop(f)
         elif m == "e": # exec change
             repo.dirstate.normallookup(f)
         elif m == "g": # get
             if branchmerge:
                 repo.dirstate.otherparent(f)
             else:
                 repo.dirstate.normal(f)
         elif m == "m": # merge
             f2, fd, move = args
             if branchmerge:
                 # We've done a branch merge, mark this file as merged
                 # so that we properly record the merger later
                 repo.dirstate.merge(fd)
                 if f != f2: # copy/rename
                     if move:
                         repo.dirstate.remove(f)
                     if f != fd:
                         repo.dirstate.copy(f, fd)
                     else:
                         repo.dirstate.copy(f2, fd)
             else:
                 # We've update-merged a locally modified file, so
                 # we set the dirstate to emulate a normal checkout
                 # of that file some time in the past. Thus our
                 # merge will appear as a normal local file
                 # modification.
                 if f2 == fd: # file not locally copied/moved
                     repo.dirstate.normallookup(fd)
                 if move:
                     repo.dirstate.drop(f)
         elif m == "d": # directory rename
             f2, fd, flag = args
             if not f2 and f not in repo.dirstate:
                 # untracked file moved
                 continue
             if branchmerge:
                 repo.dirstate.add(fd)
                 if f:
                     repo.dirstate.remove(f)
                     repo.dirstate.copy(f, fd)
                 if f2:
                     repo.dirstate.copy(f2, fd)
             else:
                 repo.dirstate.normal(fd)
                 if f:
                     repo.dirstate.drop(f)
 
 def update(repo, node, branchmerge, force, partial, ancestor=None,
            mergeancestor=False):
     """
     Perform a merge between the working directory and the given node
 
     node = the node to update to, or None if unspecified
     branchmerge = whether to merge between branches
     force = whether to force branch merging or file overwriting
     partial = a function to filter file lists (dirstate not updated)
-    mergeancestor = if false, merging with an ancestor (fast-forward)
-      is only allowed between different named branches. This flag
-      is used by rebase extension as a temporary fix and should be
-      avoided in general.
+    mergeancestor = whether it is merging with an ancestor. If true,
+      we should accept the incoming changes for any prompts that occur.
+      If false, merging with an ancestor (fast-forward) is only allowed
+      between different named branches. This flag is used by rebase extension
+      as a temporary fix and should be avoided in general.
 
     The table below shows all the behaviors of the update command
     given the -c and -C or no options, whether the working directory
     is dirty, whether a revision is specified, and the relationship of
     the parent rev to the target rev (linear, on the same named
     branch, or on another named branch).
 
     This logic is tested by test-update-branches.t.
 
     -c  -C  dirty  rev  |  linear   same  cross
      n   n    n     n   |    ok     (1)     x
      n   n    n     y   |    ok     ok     ok
      n   n    y     *   |   merge   (2)    (2)
      n   y    *     *   |    ---  discard  ---
      y   n    y     *   |    ---    (3)    ---
      y   n    n     *   |    ---    ok     ---
      y   y    *     *   |    ---    (4)    ---
 
     x = can't happen
     * = don't-care
     1 = abort: crosses branches (use 'hg merge' or 'hg update -c')
     2 = abort: crosses branches (use 'hg merge' to merge or
                  use 'hg update -C' to discard changes)
     3 = abort: uncommitted local changes
     4 = incompatible options (checked in commands.py)
 
     Return the same tuple as applyupdates().
     """
 
     onode = node
     wlock = repo.wlock()
     try:
         wc = repo[None]
         if node is None:
             # tip of current branch
             try:
                 node = repo.branchtip(wc.branch())
             except error.RepoLookupError:
                 if wc.branch() == "default": # no default branch!
                     node = repo.lookup("tip") # update to tip
                 else:
                     raise util.Abort(_("branch %s not found") % wc.branch())
         overwrite = force and not branchmerge
         pl = wc.parents()
         p1, p2 = pl[0], repo[node]
         if ancestor:
             pa = repo[ancestor]
         else:
             pa = p1.ancestor(p2)
 
         fp1, fp2, xp1, xp2 = p1.node(), p2.node(), str(p1), str(p2)
 
         ### check phase
         if not overwrite and len(pl) > 1:
             raise util.Abort(_("outstanding uncommitted merges"))
         if branchmerge:
             if pa == p2:
                 raise util.Abort(_("merging with a working directory ancestor"
                                    " has no effect"))
             elif pa == p1:
                 if not mergeancestor and p1.branch() == p2.branch():
                     raise util.Abort(_("nothing to merge"),
                                      hint=_("use 'hg update' "
                                             "or check 'hg heads'"))
             if not force and (wc.files() or wc.deleted()):
                 raise util.Abort(_("outstanding uncommitted changes"),
                                  hint=_("use 'hg status' to list changes"))
             for s in sorted(wc.substate):
                 if wc.sub(s).dirty():
                     raise util.Abort(_("outstanding uncommitted changes in "
                                        "subrepository '%s'") % s)
 
         elif not overwrite:
             if pa == p1 or pa == p2: # linear
                 pass # all good
             elif wc.dirty(missing=True):
                 raise util.Abort(_("crosses branches (merge branches or use"
                                    " --clean to discard changes)"))
             elif onode is None:
                 raise util.Abort(_("crosses branches (merge branches or update"
                                    " --check to force update)"))
             else:
                 # Allow jumping branches if clean and specific rev given
                 pa = p1
 
         ### calculate phase
         actions = calculateupdates(repo, wc, p2, pa,
-                                   branchmerge, force, partial)
+                                   branchmerge, force, partial, mergeancestor)
 
         ### apply phase
         if not branchmerge: # just jump to the new rev
             fp1, fp2, xp1, xp2 = fp2, nullid, xp2, ''
         if not partial:
             repo.hook('preupdate', throw=True, parent1=xp1, parent2=xp2)
 
         stats = applyupdates(repo, actions, wc, p2, pa, overwrite)
 
         if not partial:
             repo.setparents(fp1, fp2)
             recordupdates(repo, actions, branchmerge)
             if not branchmerge:
                 repo.dirstate.setbranch(p2.branch())
     finally:
         wlock.release()
 
     if not partial:
         repo.hook('update', parent1=xp1, parent2=xp2, error=stats[3])
     return stats

tests/test-rebase-collapse.t

@@ -1,724 +1,748
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
   > graphlog=
   > rebase=
   > mq=
   > 
   > [phases]
   > publish=False
   > 
   > [alias]
   > tglog = log -G --template "{rev}: '{desc}' {branches}\n"
   > tglogp = log -G --template "{rev}:{phase} '{desc}' {branches}\n"
   > EOF
 
 Create repo a:
 
   $ hg init a
   $ cd a
   $ hg unbundle "$TESTDIR/bundles/rebase.hg"
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+2 heads)
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg up tip
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ hg tglog
   @  7: 'H'
   |
   | o  6: 'G'
   |/|
   o |  5: 'F'
   | |
   | o  4: 'E'
   |/
   | o  3: 'D'
   | |
   | o  2: 'C'
   | |
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ cd ..
 
 
 Rebasing B onto H and collapsing changesets with different phases:
 
 
   $ hg clone -q -u 3 a a1
   $ cd a1
 
   $ hg phase --force --secret 3
 
   $ hg rebase --collapse --keepbranches
   saved backup bundle to $TESTTMP/a1/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglogp
   @  5:secret 'Collapsed revision
   |  * B
   |  * C
   |  * D'
   o  4:draft 'H'
   |
   | o  3:draft 'G'
   |/|
   o |  2:draft 'F'
   | |
   | o  1:draft 'E'
   |/
   o  0:draft 'A'
   
   $ hg manifest
   A
   B
   C
   D
   F
   H
 
   $ cd ..
 
 
 Rebasing E onto H:
 
   $ hg clone -q -u . a a2
   $ cd a2
 
   $ hg phase --force --secret 6
   $ hg rebase --source 4 --collapse
   saved backup bundle to $TESTTMP/a2/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglog
   @  6: 'Collapsed revision
   |  * E
   |  * G'
   o  5: 'H'
   |
   o  4: 'F'
   |
   | o  3: 'D'
   | |
   | o  2: 'C'
   | |
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ hg manifest
   A
   E
   F
   H
 
   $ cd ..
 
 Rebasing G onto H with custom message:
 
   $ hg clone -q -u . a a3
   $ cd a3
 
   $ hg rebase --base 6 -m 'custom message'
   abort: message can only be specified with collapse
   [255]
 
   $ hg rebase --source 4 --collapse -m 'custom message'
   saved backup bundle to $TESTTMP/a3/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglog
   @  6: 'custom message'
   |
   o  5: 'H'
   |
   o  4: 'F'
   |
   | o  3: 'D'
   | |
   | o  2: 'C'
   | |
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ hg manifest
   A
   E
   F
   H
 
   $ cd ..
 
 Create repo b:
 
   $ hg init b
   $ cd b
 
   $ echo A > A
   $ hg ci -Am A
   adding A
   $ echo B > B
   $ hg ci -Am B
   adding B
 
   $ hg up -q 0
 
   $ echo C > C
   $ hg ci -Am C
   adding C
   created new head
 
   $ hg merge
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 
   $ echo D > D
   $ hg ci -Am D
   adding D
 
   $ hg up -q 1
 
   $ echo E > E
   $ hg ci -Am E
   adding E
   created new head
 
   $ echo F > F
   $ hg ci -Am F
   adding F
 
   $ hg merge
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci -m G
 
   $ hg up -q 0
 
   $ echo H > H
   $ hg ci -Am H
   adding H
   created new head
 
   $ hg tglog
   @  7: 'H'
   |
   | o    6: 'G'
   | |\
   | | o  5: 'F'
   | | |
   | | o  4: 'E'
   | | |
   | o |  3: 'D'
   | |\|
   | o |  2: 'C'
   |/ /
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ cd ..
 
 
 Rebase and collapse - more than one external (fail):
 
   $ hg clone -q -u . b b1
   $ cd b1
 
   $ hg rebase -s 2 --collapse
   abort: unable to collapse, there is more than one external parent
   [255]
 
 Rebase and collapse - E onto H:
 
   $ hg rebase -s 4 --collapse # root (4) is not a merge
   saved backup bundle to $TESTTMP/b1/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglog
   @    5: 'Collapsed revision
   |\   * E
   | |  * F
   | |  * G'
   | o  4: 'H'
   | |
   o |    3: 'D'
   |\ \
   | o |  2: 'C'
   | |/
   o /  1: 'B'
   |/
   o  0: 'A'
   
   $ hg manifest
   A
   C
   D
   E
   F
   H
 
   $ cd ..
 
 
 
 
 Test that branchheads cache is updated correctly when doing a strip in which
 the parent of the ancestor node to be stripped does not become a head and also,
 the parent of a node that is a child of the node stripped becomes a head (node
 3). The code is now much simpler and we could just test a simpler scenario
 We keep it the test this way in case new complexity is injected.
 
   $ hg clone -q -u . b b2
   $ cd b2
 
   $ hg heads --template="{rev}:{node} {branch}\n"
   7:c65502d4178782309ce0574c5ae6ee9485a9bafa default
   6:c772a8b2dc17629cec88a19d09c926c4814b12c7 default
 
   $ cat $TESTTMP/b2/.hg/cache/branchheads-served
   c65502d4178782309ce0574c5ae6ee9485a9bafa 7
   c772a8b2dc17629cec88a19d09c926c4814b12c7 default
   c65502d4178782309ce0574c5ae6ee9485a9bafa default
 
   $ hg strip 4
   saved backup bundle to $TESTTMP/b2/.hg/strip-backup/8a5212ebc852-backup.hg (glob)
 
   $ cat $TESTTMP/b2/.hg/cache/branchheads-served
   c65502d4178782309ce0574c5ae6ee9485a9bafa 4
   2870ad076e541e714f3c2bc32826b5c6a6e5b040 default
   c65502d4178782309ce0574c5ae6ee9485a9bafa default
 
   $ hg heads --template="{rev}:{node} {branch}\n"
   4:c65502d4178782309ce0574c5ae6ee9485a9bafa default
   3:2870ad076e541e714f3c2bc32826b5c6a6e5b040 default
 
   $ cd ..
 
 
 
 
 
 
 Create repo c:
 
   $ hg init c
   $ cd c
 
   $ echo A > A
   $ hg ci -Am A
   adding A
   $ echo B > B
   $ hg ci -Am B
   adding B
 
   $ hg up -q 0
 
   $ echo C > C
   $ hg ci -Am C
   adding C
   created new head
 
   $ hg merge
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 
   $ echo D > D
   $ hg ci -Am D
   adding D
 
   $ hg up -q 1
 
   $ echo E > E
   $ hg ci -Am E
   adding E
   created new head
   $ echo F > E
   $ hg ci -m 'F'
 
   $ echo G > G
   $ hg ci -Am G
   adding G
 
   $ hg merge
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 
   $ hg ci -m H
 
   $ hg up -q 0
 
   $ echo I > I
   $ hg ci -Am I
   adding I
   created new head
 
   $ hg tglog
   @  8: 'I'
   |
   | o    7: 'H'
   | |\
   | | o  6: 'G'
   | | |
   | | o  5: 'F'
   | | |
   | | o  4: 'E'
   | | |
   | o |  3: 'D'
   | |\|
   | o |  2: 'C'
   |/ /
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ cd ..
 
 
 Rebase and collapse - E onto I:
 
   $ hg clone -q -u . c c1
   $ cd c1
 
   $ hg rebase -s 4 --collapse # root (4) is not a merge
   merging E
   saved backup bundle to $TESTTMP/c1/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglog
   @    5: 'Collapsed revision
   |\   * E
   | |  * F
   | |  * G
   | |  * H'
   | o  4: 'I'
   | |
   o |    3: 'D'
   |\ \
   | o |  2: 'C'
   | |/
   o /  1: 'B'
   |/
   o  0: 'A'
   
   $ hg manifest
   A
   C
   D
   E
   G
   I
 
   $ cat E
   F
 
   $ cd ..
 
 
 Create repo d:
 
   $ hg init d
   $ cd d
 
   $ echo A > A
   $ hg ci -Am A
   adding A
   $ echo B > B
   $ hg ci -Am B
   adding B
   $ echo C > C
   $ hg ci -Am C
   adding C
 
   $ hg up -q 1
 
   $ echo D > D
   $ hg ci -Am D
   adding D
   created new head
   $ hg merge
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 
   $ hg ci -m E
 
   $ hg up -q 0
 
   $ echo F > F
   $ hg ci -Am F
   adding F
   created new head
 
   $ hg tglog
   @  5: 'F'
   |
   | o    4: 'E'
   | |\
   | | o  3: 'D'
   | | |
   | o |  2: 'C'
   | |/
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ cd ..
 
 
 Rebase and collapse - B onto F:
 
   $ hg clone -q -u . d d1
   $ cd d1
 
   $ hg rebase -s 1 --collapse
   saved backup bundle to $TESTTMP/d1/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglog
   @  2: 'Collapsed revision
   |  * B
   |  * C
   |  * D
   |  * E'
   o  1: 'F'
   |
   o  0: 'A'
   
   $ hg manifest
   A
   B
   C
   D
   F
 
 Interactions between collapse and keepbranches
   $ cd ..
   $ hg init e
   $ cd e
   $ echo 'a' > a
   $ hg ci -Am 'A'
   adding a
 
   $ hg branch 'one'
   marked working directory as branch one
   (branches are permanent and global, did you want a bookmark?)
   $ echo 'b' > b
   $ hg ci -Am 'B'
   adding b
 
   $ hg branch 'two'
   marked working directory as branch two
   (branches are permanent and global, did you want a bookmark?)
   $ echo 'c' > c
   $ hg ci -Am 'C'
   adding c
 
   $ hg up -q 0
   $ echo 'd' > d
   $ hg ci -Am 'D'
   adding d
 
   $ hg tglog
   @  3: 'D'
   |
   | o  2: 'C' two
   | |
   | o  1: 'B' one
   |/
   o  0: 'A'
   
   $ hg rebase --keepbranches --collapse -s 1 -d 3
   abort: cannot collapse multiple named branches
   [255]
 
   $ repeatchange() {
   >   hg checkout $1
   >   hg cp d z
   >   echo blah >> z
   >   hg commit -Am "$2" --user "$3"
   > }
   $ repeatchange 3 "E" "user1"
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ repeatchange 3 "E" "user2"
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   created new head
   $ hg tglog
   @  5: 'E'
   |
   | o  4: 'E'
   |/
   o  3: 'D'
   |
   | o  2: 'C' two
   | |
   | o  1: 'B' one
   |/
   o  0: 'A'
   
   $ hg rebase -s 5 -d 4
   saved backup bundle to $TESTTMP/e/.hg/strip-backup/*-backup.hg (glob)
   $ hg tglog
   @  4: 'E'
   |
   o  3: 'D'
   |
   | o  2: 'C' two
   | |
   | o  1: 'B' one
   |/
   o  0: 'A'
   
   $ hg export tip
   # HG changeset patch
   # User user1
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
   # Node ID f338eb3c2c7cc5b5915676a2376ba7ac558c5213
   # Parent  41acb9dca9eb976e84cd21fcb756b4afa5a35c09
   E
   
   diff -r 41acb9dca9eb -r f338eb3c2c7c z
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/z	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,2 @@
   +d
   +blah
 
   $ cd ..
 
 Rebase, collapse and copies
 
   $ hg init copies
   $ cd copies
   $ hg unbundle "$TESTDIR/bundles/renames.hg"
   adding changesets
   adding manifests
   adding file changes
   added 4 changesets with 11 changes to 7 files (+1 heads)
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg up -q tip
   $ hg tglog
   @  3: 'move2'
   |
   o  2: 'move1'
   |
   | o  1: 'change'
   |/
   o  0: 'add'
   
   $ hg rebase --collapse -d 1
   merging a and d to d
   merging b and e to e
   merging c and f to f
   merging e and g to g
   merging f and c to c
   saved backup bundle to $TESTTMP/copies/.hg/strip-backup/*-backup.hg (glob)
   $ hg st
   $ hg st --copies --change .
   A d
     a
   A g
     b
   R b
   $ cat c
   c
   c
   $ cat d
   a
   a
   $ cat g
   b
   b
   $ hg log -r . --template "{file_copies}\n"
   d (a)g (b)
 
 Test collapsing a middle revision in-place
 
   $ hg tglog
   @  2: 'Collapsed revision
   |  * move1
   |  * move2'
   o  1: 'change'
   |
   o  0: 'add'
   
   $ hg rebase --collapse -r 1 -d 0
   abort: can't remove original changesets with unrebased descendants
   (use --keep to keep original changesets)
   [255]
 
 Test collapsing in place
 
   $ hg rebase --collapse -b . -d 0
   saved backup bundle to $TESTTMP/copies/.hg/strip-backup/*-backup.hg (glob)
   $ hg st --change . --copies
   M a
   M c
   A d
     a
   A g
     b
   R b
   $ cat a
   a
   a
   $ cat c
   c
   c
   $ cat d
   a
   a
   $ cat g
   b
   b
   $ cd ..
 
 
 Test stripping a revision with another child
 
   $ hg init f
   $ cd f
 
   $ echo A > A
   $ hg ci -Am A
   adding A
   $ echo B > B
   $ hg ci -Am B
   adding B
 
   $ hg up -q 0
 
   $ echo C > C
   $ hg ci -Am C
   adding C
   created new head
 
   $ hg tglog
   @  2: 'C'
   |
   | o  1: 'B'
   |/
   o  0: 'A'
   
 
 
   $ hg heads --template="{rev}:{node} {branch}: {desc}\n"
   2:c5cefa58fd557f84b72b87f970135984337acbc5 default: C
   1:27547f69f25460a52fff66ad004e58da7ad3fb56 default: B
 
   $ hg strip 2
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   saved backup bundle to $TESTTMP/f/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglog
   o  1: 'B'
   |
   @  0: 'A'
   
 
 
   $ hg heads --template="{rev}:{node} {branch}: {desc}\n"
   1:27547f69f25460a52fff66ad004e58da7ad3fb56 default: B
 
   $ cd ..
 
+Test collapsing changes that add then remove a file
 
+  $ hg init collapseaddremove
+  $ cd collapseaddremove
 
+  $ touch base
+  $ hg commit -Am base
+  adding base
+  $ touch a
+  $ hg commit -Am a
+  adding a
+  $ hg rm a
+  $ touch b
+  $ hg commit -Am b
+  adding b
+  $ hg rebase -d 0 -r "1::2" --collapse -m collapsed
+  saved backup bundle to $TESTTMP/collapseaddremove/.hg/strip-backup/*-backup.hg (glob)
+  $ hg tglog
+  @  1: 'collapsed'
+  |
+  o  0: 'base'
+  
+  $ hg manifest
+  b
+  base
 
+  $ cd ..

tests/test-rebase-detach.t

@@ -1,400 +1,398
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
   > graphlog=
   > rebase=
   > 
   > [phases]
   > publish=False
   > 
   > [alias]
   > tglog = log -G --template "{rev}: '{desc}' {branches}\n"
   > EOF
 
 
   $ hg init a
   $ cd a
   $ hg unbundle "$TESTDIR/bundles/rebase.hg"
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+2 heads)
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg up tip
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ cd ..
 
 
 Rebasing D onto H detaching from C:
 
   $ hg clone -q -u . a a1
   $ cd a1
 
   $ hg tglog
   @  7: 'H'
   |
   | o  6: 'G'
   |/|
   o |  5: 'F'
   | |
   | o  4: 'E'
   |/
   | o  3: 'D'
   | |
   | o  2: 'C'
   | |
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ hg phase --force --secret 3
   $ hg rebase -s 3 -d 7
   saved backup bundle to $TESTTMP/a1/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg log -G --template "{rev}:{phase} '{desc}' {branches}\n"
   @  7:secret 'D'
   |
   o  6:draft 'H'
   |
   | o  5:draft 'G'
   |/|
   o |  4:draft 'F'
   | |
   | o  3:draft 'E'
   |/
   | o  2:draft 'C'
   | |
   | o  1:draft 'B'
   |/
   o  0:draft 'A'
   
   $ hg manifest
   A
   D
   F
   H
 
   $ cd ..
 
 
 Rebasing C onto H detaching from B:
 
   $ hg clone -q -u . a a2
   $ cd a2
 
   $ hg tglog
   @  7: 'H'
   |
   | o  6: 'G'
   |/|
   o |  5: 'F'
   | |
   | o  4: 'E'
   |/
   | o  3: 'D'
   | |
   | o  2: 'C'
   | |
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ hg rebase -s 2 -d 7
   saved backup bundle to $TESTTMP/a2/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglog
   @  7: 'D'
   |
   o  6: 'C'
   |
   o  5: 'H'
   |
   | o  4: 'G'
   |/|
   o |  3: 'F'
   | |
   | o  2: 'E'
   |/
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ hg manifest
   A
   C
   D
   F
   H
 
   $ cd ..
 
 
 Rebasing B onto H using detach (same as not using it):
 
   $ hg clone -q -u . a a3
   $ cd a3
 
   $ hg tglog
   @  7: 'H'
   |
   | o  6: 'G'
   |/|
   o |  5: 'F'
   | |
   | o  4: 'E'
   |/
   | o  3: 'D'
   | |
   | o  2: 'C'
   | |
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ hg rebase -s 1 -d 7
   saved backup bundle to $TESTTMP/a3/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglog
   @  7: 'D'
   |
   o  6: 'C'
   |
   o  5: 'B'
   |
   o  4: 'H'
   |
   | o  3: 'G'
   |/|
   o |  2: 'F'
   | |
   | o  1: 'E'
   |/
   o  0: 'A'
   
   $ hg manifest
   A
   B
   C
   D
   F
   H
 
   $ cd ..
 
 
 Rebasing C onto H detaching from B and collapsing:
 
   $ hg clone -q -u . a a4
   $ cd a4
   $ hg phase --force --secret 3
 
   $ hg tglog
   @  7: 'H'
   |
   | o  6: 'G'
   |/|
   o |  5: 'F'
   | |
   | o  4: 'E'
   |/
   | o  3: 'D'
   | |
   | o  2: 'C'
   | |
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ hg rebase --collapse -s 2 -d 7
   saved backup bundle to $TESTTMP/a4/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg  log -G --template "{rev}:{phase} '{desc}' {branches}\n"
   @  6:secret 'Collapsed revision
   |  * C
   |  * D'
   o  5:draft 'H'
   |
   | o  4:draft 'G'
   |/|
   o |  3:draft 'F'
   | |
   | o  2:draft 'E'
   |/
   | o  1:draft 'B'
   |/
   o  0:draft 'A'
   
   $ hg manifest
   A
   C
   D
   F
   H
 
   $ cd ..
 
 Rebasing across null as ancestor
   $ hg clone -q -U a a5
 
   $ cd a5
 
   $ echo x > x
 
   $ hg add x
 
   $ hg ci -m "extra branch"
   created new head
 
   $ hg tglog
   @  8: 'extra branch'
   
   o  7: 'H'
   |
   | o  6: 'G'
   |/|
   o |  5: 'F'
   | |
   | o  4: 'E'
   |/
   | o  3: 'D'
   | |
   | o  2: 'C'
   | |
   | o  1: 'B'
   |/
   o  0: 'A'
   
   $ hg rebase -s 1 -d tip
   saved backup bundle to $TESTTMP/a5/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglog
   @  8: 'D'
   |
   o  7: 'C'
   |
   o  6: 'B'
   |
   o  5: 'extra branch'
   
   o  4: 'H'
   |
   | o  3: 'G'
   |/|
   o |  2: 'F'
   | |
   | o  1: 'E'
   |/
   o  0: 'A'
   
 
   $ hg rebase -d 5 -s 7
   saved backup bundle to $TESTTMP/a5/.hg/strip-backup/13547172c9c0-backup.hg (glob)
   $ hg tglog
   @  8: 'D'
   |
   o  7: 'C'
   |
   | o  6: 'B'
   |/
   o  5: 'extra branch'
   
   o  4: 'H'
   |
   | o  3: 'G'
   |/|
   o |  2: 'F'
   | |
   | o  1: 'E'
   |/
   o  0: 'A'
   
   $ cd ..
 
 Verify that target is not selected as external rev (issue3085)
 
   $ hg clone -q -U a a6
   $ cd a6
   $ hg up -q 6
 
   $ echo "I" >> E
   $ hg ci -m "I"
   $ hg merge 7
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci -m "Merge"
   $ echo "J" >> F
   $ hg ci -m "J"
 
   $ hg rebase -s 8 -d 7 --collapse --config ui.merge=internal:other
-  remote changed E which local deleted
-  use (c)hanged version or leave (d)eleted? c
   saved backup bundle to $TESTTMP/a6/.hg/strip-backup/*-backup.hg (glob)
 
   $ hg tglog
   @  8: 'Collapsed revision
   |  * I
   |  * Merge
   |  * J'
   o  7: 'H'
   |
   | o  6: 'G'
   |/|
   o |  5: 'F'
   | |
   | o  4: 'E'
   |/
   | o  3: 'D'
   | |
   | o  2: 'C'
   | |
   | o  1: 'B'
   |/
   o  0: 'A'
   
 
   $ hg parents
   changeset:   8:9472f4b1d736
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     Collapsed revision
   
 
   $ cd ..
 
 Ensure --continue restores a correct state (issue3046) and phase:
   $ hg clone -q a a7
   $ cd a7
   $ hg up -q 3
   $ echo 'H2' > H
   $ hg ci -A -m 'H2'
   adding H
   $ hg phase --force --secret 8
   $ hg rebase -s 8 -d 7 --config ui.merge=internal:fail
   merging H
   warning: conflicts during merge.
   merging H incomplete! (edit conflicts, then use 'hg resolve --mark')
   abort: unresolved conflicts (see hg resolve, then hg rebase --continue)
   [255]
   $ hg resolve --all -t internal:local
   $ hg rebase -c
   saved backup bundle to $TESTTMP/a7/.hg/strip-backup/6215fafa5447-backup.hg (glob)
   $ hg  log -G --template "{rev}:{phase} '{desc}' {branches}\n"
   @  7:draft 'H'
   |
   | o  6:draft 'G'
   |/|
   o |  5:draft 'F'
   | |
   | o  4:draft 'E'
   |/
   | o  3:draft 'D'
   | |
   | o  2:draft 'C'
   | |
   | o  1:draft 'B'
   |/
   o  0:draft 'A'
   
 
   $ cd ..