discovery: if a push would create a new head, mention the bookmark name if any

mercurial/discovery.py

@@ -1,362 +1,366 b''
 # discovery.py - protocol changeset discovery functions
 #
 # Copyright 2010 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, short
 from i18n import _
 import util, setdiscovery, treediscovery, phases, obsolete, bookmarks
 import branchmap
 
 def findcommonincoming(repo, remote, heads=None, force=False):
     """Return a tuple (common, anyincoming, heads) used to identify the common
     subset of nodes between repo and remote.
 
     "common" is a list of (at least) the heads of the common subset.
     "anyincoming" is testable as a boolean indicating if any nodes are missing
       locally. If remote does not support getbundle, this actually is a list of
       roots of the nodes that would be incoming, to be supplied to
       changegroupsubset. No code except for pull should be relying on this fact
       any longer.
     "heads" is either the supplied heads, or else the remote's heads.
 
     If you pass heads and they are all known locally, the response lists just
     these heads in "common" and in "heads".
 
     Please use findcommonoutgoing to compute the set of outgoing nodes to give
     extensions a good hook into outgoing.
     """
 
     if not remote.capable('getbundle'):
         return treediscovery.findcommonincoming(repo, remote, heads, force)
 
     if heads:
         allknown = True
         knownnode = repo.changelog.hasnode # no nodemap until it is filtered
         for h in heads:
             if not knownnode(h):
                 allknown = False
                 break
         if allknown:
             return (heads, False, heads)
 
     res = setdiscovery.findcommonheads(repo.ui, repo, remote,
                                        abortwhenunrelated=not force)
     common, anyinc, srvheads = res
     return (list(common), anyinc, heads or list(srvheads))
 
 class outgoing(object):
     '''Represents the set of nodes present in a local repo but not in a
     (possibly) remote one.
 
     Members:
 
       missing is a list of all nodes present in local but not in remote.
       common is a list of all nodes shared between the two repos.
       excluded is the list of missing changeset that shouldn't be sent remotely.
       missingheads is the list of heads of missing.
       commonheads is the list of heads of common.
 
     The sets are computed on demand from the heads, unless provided upfront
     by discovery.'''
 
     def __init__(self, revlog, commonheads, missingheads):
         self.commonheads = commonheads
         self.missingheads = missingheads
         self._revlog = revlog
         self._common = None
         self._missing = None
         self.excluded = []
 
     def _computecommonmissing(self):
         sets = self._revlog.findcommonmissing(self.commonheads,
                                               self.missingheads)
         self._common, self._missing = sets
 
     @util.propertycache
     def common(self):
         if self._common is None:
             self._computecommonmissing()
         return self._common
 
     @util.propertycache
     def missing(self):
         if self._missing is None:
             self._computecommonmissing()
         return self._missing
 
 def findcommonoutgoing(repo, other, onlyheads=None, force=False,
                        commoninc=None, portable=False):
     '''Return an outgoing instance to identify the nodes present in repo but
     not in other.
 
     If onlyheads is given, only nodes ancestral to nodes in onlyheads
     (inclusive) are included. If you already know the local repo's heads,
     passing them in onlyheads is faster than letting them be recomputed here.
 
     If commoninc is given, it must be the result of a prior call to
     findcommonincoming(repo, other, force) to avoid recomputing it here.
 
     If portable is given, compute more conservative common and missingheads,
     to make bundles created from the instance more portable.'''
     # declare an empty outgoing object to be filled later
     og = outgoing(repo.changelog, None, None)
 
     # get common set if not provided
     if commoninc is None:
         commoninc = findcommonincoming(repo, other, force=force)
     og.commonheads, _any, _hds = commoninc
 
     # compute outgoing
     mayexclude = (repo._phasecache.phaseroots[phases.secret] or repo.obsstore)
     if not mayexclude:
         og.missingheads = onlyheads or repo.heads()
     elif onlyheads is None:
         # use visible heads as it should be cached
         og.missingheads = repo.filtered("served").heads()
         og.excluded = [ctx.node() for ctx in repo.set('secret() or extinct()')]
     else:
         # compute common, missing and exclude secret stuff
         sets = repo.changelog.findcommonmissing(og.commonheads, onlyheads)
         og._common, allmissing = sets
         og._missing = missing = []
         og.excluded = excluded = []
         for node in allmissing:
             ctx = repo[node]
             if ctx.phase() >= phases.secret or ctx.extinct():
                 excluded.append(node)
             else:
                 missing.append(node)
         if len(missing) == len(allmissing):
             missingheads = onlyheads
         else: # update missing heads
             missingheads = phases.newheads(repo, onlyheads, excluded)
         og.missingheads = missingheads
     if portable:
         # recompute common and missingheads as if -r<rev> had been given for
         # each head of missing, and --base <rev> for each head of the proper
         # ancestors of missing
         og._computecommonmissing()
         cl = repo.changelog
         missingrevs = set(cl.rev(n) for n in og._missing)
         og._common = set(cl.ancestors(missingrevs)) - missingrevs
         commonheads = set(og.commonheads)
         og.missingheads = [h for h in og.missingheads if h not in commonheads]
 
     return og
 
 def _headssummary(repo, remote, outgoing):
     """compute a summary of branch and heads status before and after push
 
     return {'branch': ([remoteheads], [newheads], [unsyncedheads])} mapping
 
     - branch: the branch name
     - remoteheads: the list of remote heads known locally
                    None if the branch is new
     - newheads: the new remote heads (known locally) with outgoing pushed
     - unsyncedheads: the list of remote heads unknown locally.
     """
     cl = repo.changelog
     headssum = {}
     # A. Create set of branches involved in the push.
     branches = set(repo[n].branch() for n in outgoing.missing)
     remotemap = remote.branchmap()
     newbranches = branches - set(remotemap)
     branches.difference_update(newbranches)
 
     # A. register remote heads
     remotebranches = set()
     for branch, heads in remote.branchmap().iteritems():
         remotebranches.add(branch)
         known = []
         unsynced = []
         knownnode = cl.hasnode # do not use nodemap until it is filtered
         for h in heads:
             if knownnode(h):
                 known.append(h)
             else:
                 unsynced.append(h)
         headssum[branch] = (known, list(known), unsynced)
     # B. add new branch data
     missingctx = list(repo[n] for n in outgoing.missing)
     touchedbranches = set()
     for ctx in missingctx:
         branch = ctx.branch()
         touchedbranches.add(branch)
         if branch not in headssum:
             headssum[branch] = (None, [], [])
 
     # C drop data about untouched branches:
     for branch in remotebranches - touchedbranches:
         del headssum[branch]
 
     # D. Update newmap with outgoing changes.
     # This will possibly add new heads and remove existing ones.
     newmap = branchmap.branchcache((branch, heads[1])
                                  for branch, heads in headssum.iteritems()
                                  if heads[0] is not None)
     newmap.update(repo, (ctx.rev() for ctx in missingctx))
     for branch, newheads in newmap.iteritems():
         headssum[branch][1][:] = newheads
     return headssum
 
 def _oldheadssummary(repo, remoteheads, outgoing, inc=False):
     """Compute branchmapsummary for repo without branchmap support"""
 
     # 1-4b. old servers: Check for new topological heads.
     # Construct {old,new}map with branch = None (topological branch).
     # (code based on update)
     knownnode = repo.changelog.hasnode # no nodemap until it is filtered
     oldheads = set(h for h in remoteheads if knownnode(h))
     # all nodes in outgoing.missing are children of either:
     # - an element of oldheads
     # - another element of outgoing.missing
     # - nullrev
     # This explains why the new head are very simple to compute.
     r = repo.set('heads(%ln + %ln)', oldheads, outgoing.missing)
     newheads = list(c.node() for c in r)
     unsynced = inc and set([None]) or set()
     return {None: (oldheads, newheads, unsynced)}
 
 def checkheads(repo, remote, outgoing, remoteheads, newbranch=False, inc=False,
                newbookmarks=[]):
     """Check that a push won't add any outgoing head
 
     raise Abort error and display ui message as needed.
     """
     # Check for each named branch if we're creating new remote heads.
     # To be a remote head after push, node must be either:
     # - unknown locally
     # - a local outgoing head descended from update
     # - a remote head that's known locally and not
     #   ancestral to an outgoing head
     if remoteheads == [nullid]:
         # remote is empty, nothing to check.
         return
 
     if remote.capable('branchmap'):
         headssum = _headssummary(repo, remote, outgoing)
     else:
         headssum = _oldheadssummary(repo, remoteheads, outgoing, inc)
     newbranches = [branch for branch, heads in headssum.iteritems()
                    if heads[0] is None]
     # 1. Check for new branches on the remote.
     if newbranches and not newbranch:  # new branch requires --new-branch
         branchnames = ', '.join(sorted(newbranches))
         raise util.Abort(_("push creates new remote branches: %s!")
                            % branchnames,
                          hint=_("use 'hg push --new-branch' to create"
                                 " new remote branches"))
 
     # 2. Compute newly pushed bookmarks. We don't warn about bookmarked heads.
     localbookmarks = repo._bookmarks
     remotebookmarks = remote.listkeys('bookmarks')
     bookmarkedheads = set()
     for bm in localbookmarks:
         rnode = remotebookmarks.get(bm)
         if rnode and rnode in repo:
             lctx, rctx = repo[bm], repo[rnode]
             if bookmarks.validdest(repo, rctx, lctx):
                 bookmarkedheads.add(lctx.node())
         else:
             if bm in newbookmarks:
                 bookmarkedheads.add(repo[bm].node())
 
     # 3. Check for new heads.
     # If there are more heads after the push than before, a suitable
     # error message, depending on unsynced status, is displayed.
     error = None
     allmissing = set(outgoing.missing)
     allfuturecommon = set(c.node() for c in repo.set('%ld', outgoing.common))
     allfuturecommon.update(allmissing)
     for branch, heads in sorted(headssum.iteritems()):
         remoteheads, newheads, unsyncedheads = heads
         candidate_newhs = set(newheads)
         # add unsynced data
         if remoteheads is None:
             oldhs = set()
         else:
             oldhs = set(remoteheads)
         oldhs.update(unsyncedheads)
         candidate_newhs.update(unsyncedheads)
         dhs = None # delta heads, the new heads on branch
         discardedheads = set()
         if repo.obsstore:
             # remove future heads which are actually obsoleted by another
             # pushed element:
             #
             # XXX as above, There are several cases this case does not handle
             # XXX properly
             #
             # (1) if <nh> is public, it won't be affected by obsolete marker
             #     and a new is created
             #
             # (2) if the new heads have ancestors which are not obsolete and
             #     not ancestors of any other heads we will have a new head too.
             #
             # These two cases will be easy to handle for known changeset but
             # much more tricky for unsynced changes.
             newhs = set()
             for nh in candidate_newhs:
                 if nh in repo and repo[nh].phase() <= phases.public:
                     newhs.add(nh)
                 else:
                     for suc in obsolete.allsuccessors(repo.obsstore, [nh]):
                         if suc != nh and suc in allfuturecommon:
                             discardedheads.add(nh)
                             break
                     else:
                         newhs.add(nh)
         else:
             newhs = candidate_newhs
         unsynced = sorted(h for h in unsyncedheads if h not in discardedheads)
         if unsynced:
             if len(unsynced) <= 4 or repo.ui.verbose:
                 heads = ' '.join(short(h) for h in unsynced)
             else:
                 heads = (' '.join(short(h) for h in unsynced[:4]) +
                          ' ' + _("and %s others") % (len(unsynced) - 4))
             if branch is None:
                 repo.ui.status(_("remote has heads that are "
                                  "not known locally: %s\n") % heads)
             else:
                 repo.ui.status(_("remote has heads on branch '%s' that are "
                                  "not known locally: %s\n") % (branch, heads))
         if remoteheads is None:
             if len(newhs) > 1:
                 dhs = list(newhs)
                 if error is None:
                     error = (_("push creates new branch '%s' "
                                "with multiple heads") % (branch))
                     hint = _("merge or"
                              " see \"hg help push\" for details about"
                              " pushing new heads")
         elif len(newhs) > len(oldhs):
             # remove bookmarked or existing remote heads from the new heads list
             dhs = sorted(newhs - bookmarkedheads - oldhs)
         if dhs:
             if error is None:
                 if branch not in ('default', None):
                     error = _("push creates new remote head %s "
                               "on branch '%s'!") % (short(dhs[0]), branch)
+                elif repo[dhs[0]].bookmarks():
+                    error = _("push creates new remote head %s "
+                              "with bookmark '%s'!") % (
+                              short(dhs[0]), repo[dhs[0]].bookmarks()[0])
                 else:
                     error = _("push creates new remote head %s!"
                               ) % short(dhs[0])
                 if unsyncedheads:
                     hint = _("pull and merge or"
                              " see \"hg help push\" for details about"
                              " pushing new heads")
                 else:
                     hint = _("merge or"
                              " see \"hg help push\" for details about"
                              " pushing new heads")
             if branch is None:
                 repo.ui.note(_("new remote heads:\n"))
             else:
                 repo.ui.note(_("new remote heads on branch '%s':\n") % branch)
             for h in dhs:
                 repo.ui.note((" %s\n") % short(h))
     if error:
         raise util.Abort(error, hint=hint)

tests/test-bookmarks-pushpull.t

@@ -1,446 +1,446 b''
   $ "$TESTDIR/hghave" serve || exit 80
 
   $ cat << EOF >> $HGRCPATH
   > [ui]
   > logtemplate={rev}:{node|short} {desc|firstline}
   > [phases]
   > publish=False
   > [extensions]
   > EOF
   $ cat > obs.py << EOF
   > import mercurial.obsolete
   > mercurial.obsolete._enabled = True
   > EOF
   $ echo "obs=${TESTTMP}/obs.py" >> $HGRCPATH
 
 initialize
 
   $ hg init a
   $ cd a
   $ echo 'test' > test
   $ hg commit -Am'test'
   adding test
 
 set bookmarks
 
   $ hg bookmark X
   $ hg bookmark Y
   $ hg bookmark Z
 
 import bookmark by name
 
   $ hg init ../b
   $ cd ../b
   $ hg book Y
   $ hg book
    * Y                         -1:000000000000
   $ hg pull ../a
   pulling from ../a
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   adding remote bookmark X
   updating bookmark Y
   adding remote bookmark Z
   (run 'hg update' to get a working copy)
   $ hg bookmarks
      X                         0:4e3505fd9583
    * Y                         0:4e3505fd9583
      Z                         0:4e3505fd9583
   $ hg debugpushkey ../a namespaces
   bookmarks	
   namespaces	
   obsolete	
   phases	
   $ hg debugpushkey ../a bookmarks
   X	4e3505fd95835d721066b76e75dbb8cc554d7f77
   Y	4e3505fd95835d721066b76e75dbb8cc554d7f77
   Z	4e3505fd95835d721066b76e75dbb8cc554d7f77
   $ hg pull -B X ../a
   pulling from ../a
   no changes found
   importing bookmark X
   $ hg bookmark
      X                         0:4e3505fd9583
    * Y                         0:4e3505fd9583
      Z                         0:4e3505fd9583
 
 export bookmark by name
 
   $ hg bookmark W
   $ hg bookmark foo
   $ hg bookmark foobar
   $ hg push -B W ../a
   pushing to ../a
   searching for changes
   no changes found
   exporting bookmark W
   [1]
   $ hg -R ../a bookmarks
      W                         -1:000000000000
      X                         0:4e3505fd9583
      Y                         0:4e3505fd9583
    * Z                         0:4e3505fd9583
 
 delete a remote bookmark
 
   $ hg book -d W
   $ hg push -B W ../a
   pushing to ../a
   searching for changes
   no changes found
   deleting remote bookmark W
   [1]
 
 push/pull name that doesn't exist
 
   $ hg push -B badname ../a
   pushing to ../a
   searching for changes
   no changes found
   bookmark badname does not exist on the local or remote repository!
   [2]
   $ hg pull -B anotherbadname ../a
   pulling from ../a
   abort: remote bookmark anotherbadname not found!
   [255]
 
 divergent bookmarks
 
   $ cd ../a
   $ echo c1 > f1
   $ hg ci -Am1
   adding f1
   $ hg book -f @
   $ hg book -f X
   $ hg book
      @                         1:0d2164f0ce0d
    * X                         1:0d2164f0ce0d
      Y                         0:4e3505fd9583
      Z                         1:0d2164f0ce0d
 
   $ cd ../b
   $ hg up
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   updating bookmark foobar
   $ echo c2 > f2
   $ hg ci -Am2
   adding f2
   $ hg book -if @
   $ hg book -if X
   $ hg book
      @                         1:9b140be10808
      X                         1:9b140be10808
      Y                         0:4e3505fd9583
      Z                         0:4e3505fd9583
      foo                       -1:000000000000
    * foobar                    1:9b140be10808
 
   $ hg pull --config paths.foo=../a foo
   pulling from $TESTTMP/a (glob)
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
   divergent bookmark @ stored as @foo
   divergent bookmark X stored as X@foo
   updating bookmark Z
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg book
      @                         1:9b140be10808
      @foo                      2:0d2164f0ce0d
      X                         1:9b140be10808
      X@foo                     2:0d2164f0ce0d
      Y                         0:4e3505fd9583
      Z                         2:0d2164f0ce0d
      foo                       -1:000000000000
    * foobar                    1:9b140be10808
   $ hg push -f ../a
   pushing to ../a
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
   $ hg -R ../a book
      @                         1:0d2164f0ce0d
    * X                         1:0d2164f0ce0d
      Y                         0:4e3505fd9583
      Z                         1:0d2164f0ce0d
 
 revsets should not ignore divergent bookmarks
 
   $ hg bookmark -fr 1 Z
   $ hg log -r 'bookmark()' --template '{rev}:{node|short} {bookmarks}\n'
   0:4e3505fd9583 Y
   1:9b140be10808 @ X Z foobar
   2:0d2164f0ce0d @foo X@foo
   $ hg log -r 'bookmark("X@foo")' --template '{rev}:{node|short} {bookmarks}\n'
   2:0d2164f0ce0d @foo X@foo
   $ hg log -r 'bookmark("re:X@foo")' --template '{rev}:{node|short} {bookmarks}\n'
   2:0d2164f0ce0d @foo X@foo
 
 update a remote bookmark from a non-head to a head
 
   $ hg up -q Y
   $ echo c3 > f2
   $ hg ci -Am3
   adding f2
   created new head
   $ hg push ../a
   pushing to ../a
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
   updating bookmark Y
   $ hg -R ../a book
      @                         1:0d2164f0ce0d
    * X                         1:0d2164f0ce0d
      Y                         3:f6fc62dde3c0
      Z                         1:0d2164f0ce0d
 
 update a bookmark in the middle of a client pulling changes
 
   $ cd ..
   $ hg clone -q a pull-race
   $ hg clone -q pull-race pull-race2
   $ cd pull-race
   $ hg up -q Y
   $ echo c4 > f2
   $ hg ci -Am4
   $ echo c5 > f3
   $ cat <<EOF > .hg/hgrc
   > [hooks]
   > outgoing.makecommit = hg ci -Am5; echo committed in pull-race
   > EOF
   $ cd ../pull-race2
   $ hg pull
   pulling from $TESTTMP/pull-race (glob)
   searching for changes
   adding changesets
   adding f3
   committed in pull-race
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   updating bookmark Y
   (run 'hg update' to get a working copy)
   $ hg book
    * @                         1:0d2164f0ce0d
      X                         1:0d2164f0ce0d
      Y                         4:b0a5eff05604
      Z                         1:0d2164f0ce0d
   $ cd ../b
 
 diverging a remote bookmark fails
 
   $ hg up -q 4e3505fd9583
   $ echo c4 > f2
   $ hg ci -Am4
   adding f2
   created new head
   $ echo c5 > f2
   $ hg ci -Am5
   $ hg log -G
   @  5:c922c0139ca0 5
   |
   o  4:4efff6d98829 4
   |
   | o  3:f6fc62dde3c0 3
   |/
   | o  2:0d2164f0ce0d 1
   |/
   | o  1:9b140be10808 2
   |/
   o  0:4e3505fd9583 test
   
 
   $ hg book -f Y
 
   $ cat <<EOF > ../a/.hg/hgrc
   > [web]
   > push_ssl = false
   > allow_push = *
   > EOF
 
   $ hg -R ../a serve -p $HGPORT2 -d --pid-file=../hg2.pid
   $ cat ../hg2.pid >> $DAEMON_PIDS
 
   $ hg push http://localhost:$HGPORT2/
   pushing to http://localhost:$HGPORT2/
   searching for changes
-  abort: push creates new remote head c922c0139ca0!
+  abort: push creates new remote head c922c0139ca0 with bookmark 'Y'!
   (merge or see "hg help push" for details about pushing new heads)
   [255]
   $ hg -R ../a book
      @                         1:0d2164f0ce0d
    * X                         1:0d2164f0ce0d
      Y                         3:f6fc62dde3c0
      Z                         1:0d2164f0ce0d
 
 
 Unrelated marker does not alter the decision
 
   $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
   $ hg push http://localhost:$HGPORT2/
   pushing to http://localhost:$HGPORT2/
   searching for changes
-  abort: push creates new remote head c922c0139ca0!
+  abort: push creates new remote head c922c0139ca0 with bookmark 'Y'!
   (merge or see "hg help push" for details about pushing new heads)
   [255]
   $ hg -R ../a book
      @                         1:0d2164f0ce0d
    * X                         1:0d2164f0ce0d
      Y                         3:f6fc62dde3c0
      Z                         1:0d2164f0ce0d
 
 Update to a successor works
 
   $ hg id --debug -r 3
   f6fc62dde3c0771e29704af56ba4d8af77abcc2f
   $ hg id --debug -r 4
   4efff6d98829d9c824c621afd6e3f01865f5439f
   $ hg id --debug -r 5
   c922c0139ca03858f655e4a2af4dd02796a63969 tip Y
   $ hg debugobsolete f6fc62dde3c0771e29704af56ba4d8af77abcc2f cccccccccccccccccccccccccccccccccccccccc
   $ hg debugobsolete cccccccccccccccccccccccccccccccccccccccc 4efff6d98829d9c824c621afd6e3f01865f5439f
   $ hg push http://localhost:$HGPORT2/
   pushing to http://localhost:$HGPORT2/
   searching for changes
   remote: adding changesets
   remote: adding manifests
   remote: adding file changes
   remote: added 2 changesets with 2 changes to 1 files (+1 heads)
   updating bookmark Y
   $ hg -R ../a book
      @                         1:0d2164f0ce0d
    * X                         1:0d2164f0ce0d
      Y                         5:c922c0139ca0
      Z                         1:0d2164f0ce0d
 
 hgweb
 
   $ cat <<EOF > .hg/hgrc
   > [web]
   > push_ssl = false
   > allow_push = *
   > EOF
 
   $ hg serve -p $HGPORT -d --pid-file=../hg.pid -E errors.log
   $ cat ../hg.pid >> $DAEMON_PIDS
   $ cd ../a
 
   $ hg debugpushkey http://localhost:$HGPORT/ namespaces
   bookmarks	
   namespaces	
   obsolete	
   phases	
   $ hg debugpushkey http://localhost:$HGPORT/ bookmarks
   @	9b140be1080824d768c5a4691a564088eede71f9
   X	9b140be1080824d768c5a4691a564088eede71f9
   Y	c922c0139ca03858f655e4a2af4dd02796a63969
   Z	9b140be1080824d768c5a4691a564088eede71f9
   foo	0000000000000000000000000000000000000000
   foobar	9b140be1080824d768c5a4691a564088eede71f9
   $ hg out -B http://localhost:$HGPORT/
   comparing with http://localhost:$HGPORT/
   searching for changed bookmarks
   no changed bookmarks found
   [1]
   $ hg push -B Z http://localhost:$HGPORT/
   pushing to http://localhost:$HGPORT/
   searching for changes
   no changes found
   exporting bookmark Z
   [1]
   $ hg book -d Z
   $ hg in -B http://localhost:$HGPORT/
   comparing with http://localhost:$HGPORT/
   searching for changed bookmarks
      Z                         0d2164f0ce0d
      foo                       000000000000
      foobar                    9b140be10808
   $ hg pull -B Z http://localhost:$HGPORT/
   pulling from http://localhost:$HGPORT/
   no changes found
   divergent bookmark @ stored as @1
   divergent bookmark X stored as X@1
   adding remote bookmark Z
   adding remote bookmark foo
   adding remote bookmark foobar
   importing bookmark Z
   $ hg clone http://localhost:$HGPORT/ cloned-bookmarks
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 5 changesets with 5 changes to 3 files (+2 heads)
   updating to bookmark @
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -R cloned-bookmarks bookmarks
    * @                         1:9b140be10808
      X                         1:9b140be10808
      Y                         4:c922c0139ca0
      Z                         2:0d2164f0ce0d
      foo                       -1:000000000000
      foobar                    1:9b140be10808
 
   $ cd ..
 
 Pushing a bookmark should only push the changes required by that
 bookmark, not all outgoing changes:
   $ hg clone http://localhost:$HGPORT/ addmarks
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 5 changesets with 5 changes to 3 files (+2 heads)
   updating to bookmark @
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd addmarks
   $ echo foo > foo
   $ hg add foo
   $ hg commit -m 'add foo'
   $ echo bar > bar
   $ hg add bar
   $ hg commit -m 'add bar'
   $ hg co "tip^"
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   (leaving bookmark @)
   $ hg book add-foo
   $ hg book -r tip add-bar
 Note: this push *must* push only a single changeset, as that's the point
 of this test.
   $ hg push -B add-foo --traceback
   pushing to http://localhost:$HGPORT/
   searching for changes
   remote: adding changesets
   remote: adding manifests
   remote: adding file changes
   remote: added 1 changesets with 1 changes to 1 files
   exporting bookmark add-foo
 
 pushing a new bookmark on a new head does not require -f if -B is specified
 
   $ hg up -q X
   $ hg book W
   $ echo c5 > f2
   $ hg ci -Am5
   created new head
   $ hg push -B W
   pushing to http://localhost:$HGPORT/
   searching for changes
   remote: adding changesets
   remote: adding manifests
   remote: adding file changes
   remote: added 1 changesets with 1 changes to 1 files (+1 heads)
   exporting bookmark W
   $ hg -R ../b id -r W
   cc978a373a53 tip W
 
   $ cd ..