changeset 1534:3295353b1363 stable

merge with inactive compat branch
author Pierre-Yves David <pierre-yves.david@fb.com>
date Tue, 23 Jun 2015 16:50:06 -0700
parents 8a20b2774a65 (diff) b9f8eaa49733 (current diff)
children c3a50e54b25d 5f6e78aea094
files
diffstat 87 files changed, 2599 insertions(+), 11288 deletions(-) [+]
line wrap: on
line diff
--- a/.hgtags
+++ b/.hgtags
@@ -25,3 +25,14 @@
 0304fc2bab158658df53a8f4edd5aa300a9497d2 4.0.0
 e914884fb7210d6350d94909cb25ebc602359680 4.0.1
 4d5d101e878f6d6264a8e036b11afdf922c4ef94 4.1.0
+c13b408c00066af78cda88734909c6f2f3505f76 5.0.0
+51e1e962172c0178394cd36652d90181319f5416 5.0.1
+51e1e962172c0178394cd36652d90181319f5416 5.0.1
+0f30907852831f818bd0d01141b4ab7d8d71b821 5.0.1
+dbd0733e584073d6a7b6dea933767853e9cfe845 5.0.2
+bfe9be352453640233371cc7deb409a09decacf9 5.1.0
+9b8628e0a142e0e094e27430c388e3c12ceba513 5.1.1
+e886bc501796d53e0a19e608c6e5a6071191819e 5.1.2
+c52c15100fb2d85c3525d6d085b3663ec4f90fe6 5.1.3
+891c3ce894fa879532299910735bcc2a968245b1 5.1.4
+1377f6a7f9ecb25e9b8885fce8f6f42e0d6f3f12 5.1.5
--- a/README
+++ b/README
@@ -28,11 +28,12 @@
 Contribute
 ==========
 
-The simplest way to contribute is to issue a pull request on Bitbucket
-(https://bitbucket.org/marmoute/mutable-history). Alternatively, you
-can use the patchbomb extension to send email to mercurial
-devel. Please make sure to use the evolve-ext flag when doing so. You
-can use a command like this:
+Bugs are to be reported on the mercurial's bug tracker: http://bz.selenic.com/
+Use the the "evolution" component.
+
+Please use the patchbomb extension to send email to mercurial devel. Please
+make sure to use the evolve-ext flag when doing so. You can use a command like
+this:
 
     hg email --to mercurial-devel@selenic.com --flag evolve-ext --rev '<your patches>'
 
@@ -46,19 +47,73 @@
     cd tests
     python run-tests.py --with-hg=/path/to/hg
 
-However, some cutting-edge changes may be found in a mutable repository hosted
-by logilab before they are published.
-
-    http://hg.netv6.net/marmoute-wip/evolve/
-
-Be sure to check latest draft changeset before submitting new changesets.
-
 
 Changelog
 =========
 
-4.2.0 --
+5.1.5 -- 2015-06-23
+
+- minor documentation cleanup
+- support -i option for `hg amend` if commit supports it (3.4)
+- fix the `debugrecordpruneparents` utility
+- fix some possible crash during command abort (release non-existant transaction)
+- fix simple4server bug tracker URL
+- compatibility with bookmark API change in future Mercurial 3.5
+- prune no longer move the active bookmark for no reason (issue4559)
+- evolve: stop reporting divergence base as missing when we actually have it
+- significant performance improvement for all revsets.
+
+5.1.4 -- 2015-04-23
+
+- significant documentation update
+- fix issue4616: pulling with bundle2 would crash if common marker when
+  discovered on non-served changesets.
+- fix the debugobsrelsethashtree command
+
+5.1.3 -- 2015-04-20
+
+- discovery: fix misbehaving discovery accros python version
+- pull: properly install the bundle2 par generator
+  (avoid sending all markers for each pull)
+- commit: avoid potential deadlock (acquires wlock before lock)
+- graft: avoid potential deadlock (acquires wlock before lock)
+
+5.1.2 -- 2015-04-01
+
+- evolve: prevent a crash in httpclient_pushobsmarkers() when pushing
 
+5.1.1 -- 2015-03-05
+
+- debugobsconvert: fix invalid markers during conversion
+- discovery: cache some of the obs hash computation to improve performance (issue4518)
+- revset: fix some crash with (issue4515)
+
+5.1 -- 2015-01-30
+
+- evolve: explicitly disable bookmark on evolve (issue4432)
+- evolve: don't abort Mercurial on version mismatch
+- comptatibility with mercurial 3.3
+
+5.0.2 -- 2014-12-14
+
+- evolve: remove dependency to the rebase extension
+
+5.0.1 -- 2014-11-25
+
+- amend: fix --logfile argument
+- evolve: preserve branch change when evolving
+- evolve: fix potential crash while solving `bumped` changesets.
+- uncommit: abort when rev specifies the current changeset
+- evolve: various message improvement
+- evolve: fix selection of changeset to evolve from the middle of a stack (issue4434)
+- evolve: make next/prev only move bookmarks optionally
+- evolve: tell user which "base of divergent changeset" is not found
+
+
+
+5.0.0 -- 2014-10-22
+
+- drop compat with Mercurial pre 3.2
 - uncommit: add a --rev argument
 - evolve: add a `working directory now at xxxxxxxxxx` message
 - evolve: automatically translate obsolete hashes when evolving
@@ -66,6 +121,11 @@
 - prune: work around a massive slowdown from lazy revset
 - grab: "fix" the grab alias on window
 
+- fix an issue where prune performance were quadratic with the number of
+  changesets pruned.
+- pull: use discovery to pull less obsmarkers through bundle2
+
+
 4.1.0 -- 2014-08-08
 
 - amend: add -D/--current-date option
@@ -253,7 +313,6 @@
 
 0.3.0 -- 2012-06-27
 
-- 
 - obsolete:  Add "latecomer" error detection (stabilize does not handle resolution yet)
 - evolve:    Introduce a new `uncommit` command to remove change from a changeset
 - rebase:    allow the use of --keep again
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,33 @@
+mercurial-evolve (5.1.5-1) UNRELEASED; urgency=medium
+
+  * New upstream release.
+
+ -- Pierre-Yves David <pyd@marginatus.alto.octopoid.net>  Tue, 23 Jun 2015 15:30:07 -0700
+
+mercurial-evolve (5.1.3-1) unstable; urgency=medium
+
+  * new upstream release
+
+ -- Julien Cristau <julien.cristau@logilab.fr>  Mon, 20 Apr 2015 14:44:45 +0200
+
+mercurial-evolve (5.0.2-1) unstable; urgency=medium
+
+  * new upstream release
+
+ -- Pierre-Yves David <pierre-yves.david@ens-lyon.org>  Sun, 14 Dec 2014 12:43:28 -0800
+
+mercurial-evolve (5.0.1-1) unstable; urgency=medium
+
+  * New upstream release.
+
+ -- Faheem Mitha <faheem@faheem.info>  Wed, 12 Nov 2014 11:24:28 +0530
+
+mercurial-evolve (5.0.0+-1) UNRELEASED; urgency=low
+
+  * new upstream snapshot
+
+ -- Julien Cristau <julien.cristau@logilab.fr>  Mon, 17 Nov 2014 15:44:32 +0100
+
 mercurial-evolve (4.1.0-1) unstable; urgency=medium
 
   * new upstream release
--- a/debian/control
+++ b/debian/control
@@ -7,13 +7,13 @@
  Pierre-Yves David <pierre-yves.david@logilab.fr>,
 Standards-Version: 3.9.3
 Build-Depends:
- mercurial (>=2.6~),
+ mercurial (>= 3.4~),
  python,
  debhelper (>= 8),
  python-sphinx (>= 1.0.8),
  imagemagick,
  librsvg2-bin,
- curl,
+ wget,
 Python-Version: >= 2.6
 Homepage: https://bitbucket.org/marmoute/mutable-history
 
@@ -22,7 +22,7 @@
 Depends:
  ${python:Depends},
  ${misc:Depends},
- mercurial (>= 2.6),
+ mercurial (>= 3.3~),
 Description: evolve extension for Mercurial
  This package provides the experimental "evolve" extension for the Mercurial
  DVCS.
--- a/debian/rules
+++ b/debian/rules
@@ -1,15 +1,16 @@
 #!/usr/bin/make -f
+#export DH_VERBOSE=1
 
-clean %:
+%:
 	dh $@ --with python2 --buildsystem=python_distutils
 
-build:
-	dh build --with python2 --buildsystem=python_distutils
+override_dh_auto_build:
+	dh_auto_build
 	$(MAKE) -C docs
 
 ifeq (,$(filter nocheck, $(DEB_BUILD_OPTIONS)))
 override_dh_auto_test:
-	cd tests &&  python run-tests.py --with-hg=`which hg`
+	cd tests &&  python run-tests.py --with-hg=`which hg` --blacklist=$(CURDIR)/debian/test-blacklist
 endif
 
 override_dh_python2:
@@ -17,12 +18,11 @@
 	find debian -name __init__.py -delete
 	dh_python2
 
-clean: clean-docs
+override_dh_auto_clean: clean-docs
+	dh_auto_clean
 	rm -f tests/*.err
 
 clean-docs:
 	rm -rf html
 	rm -f docs/static/logo-evolve.ico
 	rm -f docs/tutorials/tutorial.rst
-
-.PHONY: build clean clean-docs
new file mode 100644
--- /dev/null
+++ b/debian/test-blacklist
@@ -0,0 +1,3 @@
+test-drop.t
+test-simple4server.t
+tests/test-simple4server-bundle2.t
--- a/docs/concepts.rst
+++ b/docs/concepts.rst
@@ -24,7 +24,7 @@
           isn't quite right yet, and the diagrams are missing for
           malformatted.)
 
-This document follows standard set theory notation:
+This document follows standard set theory notation::
 
   x ∈ A: x is a member of A
 
@@ -133,7 +133,7 @@
 public phase; only mutable changesets are divergent).
 
 The collective term for unstable, bumped, and divergent changeset is
-*troubled*:
+*troubled*::
 
   troubled = unstable ∪ bumped ∪ divergent
 
@@ -155,7 +155,7 @@
 changesets; these are bugs and will be fixed in due course.)
 
 All hidden changesets are obsolete, and all obsolete changesets are
-part of your repository. Mathematically speaking:
+part of your repository. Mathematically speaking::
 
   repo ⊇ obsolete ⊇ hidden
 
@@ -177,7 +177,7 @@
 Why is this changeset visible?
 ------------------------------
 
-Any changeset which is not hidden is *visible*. That is,
+Any changeset which is not hidden is *visible*. That is, ::
 
   visible = repo ∖ hidden
 
@@ -185,7 +185,7 @@
 changesets that are in *repo* but not in *hidden*.)
 
 After amending or pruning a changeset, you might expect it to be
-hidden. It doesn't always work out that way. The precise rules are:
+hidden. It doesn't always work out that way. The precise rules are::
 
   hideable = obsolete
   blockers = bookmarks ∪ parents(workingcopy) ∪ localtags
@@ -193,7 +193,7 @@
 
 This will probably be clearer with a worked example. First, here's a
 repository with some obsolete changesets, some troubled changesets,
-one bookmark, a working copy, and some hidden changesets:
+one bookmark, a working copy, and some hidden changesets::
 
         x-x
        /
@@ -202,7 +202,7 @@
       x-x-o
 
 Here's the computation required to determine which changesets are
-hidden:
+hidden::
 
   repo = { 0, 1, 2, 3, 4, 5, 6, 7, 8 }
 
deleted file mode 100644
--- a/docs/evolve-collaboration.rst
+++ /dev/null
@@ -1,135 +0,0 @@
-.. Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
-..                Logilab SA        <contact@logilab.fr>
-
-------------------------------------------------
-Collaboration Using Evolve: A user story
-------------------------------------------------
-
-
-After having written some code for ticket #42, Alice starts a patch
-(this will be kind of like a 'work-in-progress' checkpoint
-initially)::
-
-    $ hg ci -m '[entities] remove magic'
-
-Instant patch! Note how the default phase of this changeset is (still)
-in "draft" state.
-
-This is easily checkable::
-
-    $ hg phase tip
-    827: draft
-
-See? Until the day it becomes a "public" changeset, this can be
-altered to no end. How? It happens with an explicit::
-
-    $ hg phase --public
-
-In practice, pushing to a "publishing" repository can also turn draft
-changesets into public ones. Older Mercurial releases are automatically
-"publishing" since they do not have the notion of non-public changesets
-(or mutable history).
-
-During the transition from older Mercurial servers to new ones, this will
-happen often, so be careful.
-
-Now let's come back to our patch. Next hour sees good progress and Alice
-wants to complete the patch with the recent stuff (all that's shown by
-an "hg diff") to share with a co-worker, Bob::
-
-    $ hg amend -m '[entities] fix frobulator (closes #42)'
-
-Note that we also fix the commit message. (For recovering MQ users: this
-is just like "hg qrefresh -m").
-
-Before leaving, let's push to the central shared repository. That will
-give Bob the signal that something is ripe for review / further amendments::
-
-    $ hg push # was done with a modern mercurial, draft phase is preserved
-
-The next day, Bob, who arrives very early, can immediately work out
-some glitches in the patch.
-
-He then starts two others, for ticket #43 and #44 and finally commits them.
-Then, as original worker arrives, he pushes his stuff.
-
-Alice, now equipped with enough properly sugared coffee to survive the
-next two hours::
-
-    $ hg pull
-
-Then::
-
-    $ hg up "tip ~ 2"
-
-brings her to yesterday's patch. Indeed the patch serial number has
-increased (827 still exists but has been obsoleted).
-
-She understands that her original patch has been altered. But how did it
-evolve?
-
-The enhanced hgview shows the two patches. By default only the most
-recent version of a patch is shown.
-
-Now, when Alice installed the mutable-history extensions, she got an alias
-that allows her to see the diff between two amendments, defined like this::
-
-    odiff=diff --rev 'limit(obsparents(.),1)' --rev .
-
-She can see exactly how Bob amended her work.
-
-* odiff
-
-
-Amend ... Stabilize
---------------------
-
-Almost perfect! Alice just needs to fix a half dozen grammar oddities in
-the new docstrings and it will be publishable.
-
-Then, another round of:
-
-    $ hg amend
-
-and a quick look at hgview ... shows something strange (at first).
-
-Ticket #42 yesterday's version is still showing up, with two descendant lineages:
-
-* the next version, containing grammar fixes,
-
-* the two stacked changesets for tickets #43 .. 44 committed by Bob.
-
-Indeed, since this changeset still has non-obsolete descendant
-changesets it cannot be hidden. This branch (old version of #42 and
-the two descendants by C.W.) is said to be _unstable_.
-
-Why would one want such a state? Why not auto-stabilize each time "hg
-amend" is typed out?
-
-Alice for one, wouldn't want to merge each time she amends something that
-might conflict with the descendant changesets. Remember she is
-currently updating the very middle of an history!
-
-Being now done with grammar and typo fixes, Alice decides it is time to
-stabilize again the tree. She does::
-
-    $ hg evolve
-
-two times, one for each unstable descendant. The last time, hgview
-shows her a straight line again. Wow! that feels a bit like a
-well-planned surgical operation. At the end, the patient tree has
-been properly trimmed and any conflict properly handled.
-
-Of course nothing fancy really happened: each "stablilize" can be
-understood in terms of a rebase of the next unstable descendant to the
-newest version of its parent (including the possible manual conflict
-resolution intermission ...).
-
-Except that rebase is a destructive (it removes information from the
-repository), unrecoverable operation, and the "evolve + obsolete"
-combo, using changeset copy and obsolescence marker, provides evolution
-semantics by only adding new information to the repository (but more
-on that later).
-
-She pushes again.
-
--- a/docs/evolve-faq.rst
+++ b/docs/evolve-faq.rst
@@ -1,19 +1,19 @@
 .. Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
 ..                Logilab SA        <contact@logilab.fr>
 
----------------------------------------------------------------------
+-------------
 Evolve How To
----------------------------------------------------------------------
+-------------
 
 
 
 Add a changeset: ``commit``
-------------------------------------------------------------
+---------------------------
 
 Just use commit as usual. New changesets will be in the `draft` phase.
 
 Rewrite a changeset: ``commit --amend``
-------------------------------------------------------------
+---------------------------------------
 
 It writes a new changeset combining working-directory parent changes and parent.
 It will work on any `draft` or `secret` changeset. It will not work on `public`
@@ -36,7 +36,7 @@
 
 
 Move a changeset: ``grab``
-------------------------------------------------------------
+--------------------------
 
 You can use ``hg grab <rev>`` to move a rev at your current location, making the
 old version obsolete.
@@ -45,7 +45,7 @@
 
 
 Delete a changeset: ``prune``
-------------------------------------------------------------
+-----------------------------
 
 A new ``prune`` command allows removing a changeset.
 
@@ -53,7 +53,7 @@
 
 
 Moving within the history: ``gdown`` and ``gup``
-------------------------------------------------------------
+------------------------------------------------
 
 While working on mutable part of the history you often need to move between
 mutable commits.
@@ -67,7 +67,7 @@
           feeling back.
 
 Collapse changesets: ``fold``
-------------------------------------------------------------
+-----------------------------
 
 You can use ``hg fold`` to collapse multiple changesets in a single one.
 
@@ -78,7 +78,7 @@
 ``hg fold -r <revset>`` fold everything changeset matching the revset together.
 
 Getting changes out of a commit
-------------------------------------------------------------
+-------------------------------
 
 The ``hg uncommit`` command lets you rewrite the parent commit without
 selected changed files. Target files content is not altered and
@@ -94,7 +94,7 @@
   M celestine
 
 Split a changeset
------------------------
+-----------------
 
 To split on file boundaries, just use ``uncommit`` command.
 
@@ -120,7 +120,7 @@
 
 
 Update my current work in progress after a pull
-----------------------------------------------
+-----------------------------------------------
 
 Whenever you are working on some changesets, it is more likely that a pull
 will, eventually, import new changesets in your tree.
@@ -133,7 +133,7 @@
 
 
 Move multiple changesets: ``rebase``
-------------------------------------------------------------
+------------------------------------
 
 You can still use rebase to move a whole segment of the changeset graph together.
 
@@ -141,7 +141,7 @@
              divergent versions of the changesets.
 
 Resolve history troubles: ``evolve``
-------------------------------------------------------------
+------------------------------------
 
 When you rewrite (amend) a changeset with children without rewriting
 those children you create *unstable* changesets and *suspended
@@ -155,7 +155,7 @@
 
 
 Fix my history afterward: ``prune -n``
-------------------------------------------------------------
+--------------------------------------
 
 Sometimes you need to create an obsolete marker by hand. This may happen when
 upstream has applied some of your patches for example.
@@ -164,7 +164,7 @@
 marker.
 
 View diff from the last amend
-------------------------------------------------------------
+-----------------------------
 
 An ``odiff`` alias have been added by ``enable.sh``
 
@@ -173,7 +173,7 @@
     odiff = diff --rev 'limit(precursors(.),1)' --rev .
 
 View obsolete markers
-------------------------------------------------------------
+---------------------
 
 hgview_ is the only viewer that currently supports this feature. You
 need version 1.6.2
@@ -193,10 +193,10 @@
 
 
 Important Note
-=====================================================================
+==============
 
 View change to your file
-------------------------------------------------------------
+------------------------
 
 Extinct changesets are hidden using the *hidden* feature of mercurial.
 
--- a/docs/evolve-good-practice.rst
+++ b/docs/evolve-good-practice.rst
@@ -6,7 +6,7 @@
 -----------------------------------------
 
 Avoid unstability
---------------------------------
+-----------------
 
 The less unstability you have the less you need to resolve.
 
@@ -14,7 +14,7 @@
 not ready neither.
 
 Branch as much as possible
---------------------------------
+--------------------------
 
 This is not MQ; you are not constrained to linear history.
 
@@ -22,7 +22,7 @@
 and conflict.
 
 Rewrite your changes only
-------------------------------------------------
+-------------------------
 
 There is no descent conflict detection and handling right now.
 Rewriting other people's changesets guarantees that you will get
@@ -40,7 +40,7 @@
 
 
 Do not get too confident
----------------------------
+------------------------
 
 This is an experimental extension and a complex concept. This is beautiful,
 powerful and robust on paper, but the tool and your mind may not be prepared for
deleted file mode 100644
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--- a/docs/from-mq.rst
+++ b/docs/from-mq.rst
@@ -1,12 +1,12 @@
 .. Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
 ..                Logilab SA        <contact@logilab.fr>
 
--------------------------------------------
+-----------------------------------
 From MQ To Evolve, The Refugee Book
--------------------------------------------
+-----------------------------------
 
 Cheat sheet
--------------
+-----------
 
 ==============================  ============================================
 mq command                       new equivalent
@@ -28,10 +28,10 @@
 
 
 Replacement details
----------------------
+-------------------
 
 hg qseries
-```````````
+``````````
 
 All your work in progress is now in real changesets all the time.
 
@@ -45,7 +45,7 @@
   wip = log -r 'not public()' --template='{rev}:{node|short} {desc|firstline}\n'
 
 hg qnew
-````````
+```````
 
 With evolve you handle standard changesets without an additional overlay.
 
@@ -66,7 +66,7 @@
   new-commit=secret
 
 hg qref
-````````
+```````
 
 A new command from evolution will allow you to rewrite the changeset you are
 currently on. Just call:
@@ -90,7 +90,7 @@
 .. note: refresh is an alias for amend
 
 hg qref --exclude
-`````````````````````
+`````````````````
 
 To remove changes from your current commit use::
 
@@ -98,7 +98,7 @@
 
 
 hg qpop
-`````````
+```````
 
 The following command emulates the behavior of hg qpop:
 
@@ -136,14 +136,14 @@
 
 
 hg qrm
-```````
+``````
 
 evolution introduce a new command to mark a changeset as "not wanted anymore".::
 
   $ hg prune <revset>
 
 hg qfold
-`````````
+````````
 
 
 ::
@@ -151,14 +151,14 @@
   $ hg fold first::last
 
 hg qdiff
-`````````
+````````
 
 ``pdiff`` is an alias for `hg diff -r .^` It works like qdiff, but outside MQ.
 
 
 
 hg qfinish and hg qimport
-````````````````````````````
+`````````````````````````
 
 These are not necessary anymore. If you want to control the
 mutability of changesets, see the phase feature.
@@ -166,7 +166,7 @@
 
 
 hg qcommit
-```````````````
+``````````
 
 If you really need to send patches through versioned mq patches, you should
 look at the qsync extension.
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -4,6 +4,14 @@
 Changeset Evolution with Mercurial
 ==================================
 
+.. toctree::
+   :maxdepth: 2
+
+   user-guide
+   sharing
+   concepts
+   from-mq
+
 `evolve`_ is an experimental Mercurial extension for safe mutable history.
 
 .. _`evolve`: http://mercurial.selenic.com/wiki/EvolveExtension
@@ -81,17 +89,51 @@
 ``evolve`` is experimental!
 ---------------------------
 
-TODO
+The long-term plan for ``evolve`` is to add it to core Mercurial.
+However, it is not yet stable enough for that. In particular:
+
+  * The UI is unstable: ``evolve``'s command names and command options
+    are not completely nailed down yet. They are subject to occasional
+    backwards-incompatible changes. If you write scripts that use
+    evolve commands, a future release could break your scripts.
 
-  * unstable UI
-  * some corner cases not covered yet
+  * There are still some corner cases that aren't handled yet. If you
+    think you have found such a case, please check if it's already
+    described in the Mercurial bug tracker (http://bz.selenic.com).
+    Bugs in ``evolve`` are files under component "evolution": use
+    `this query`_ to view open bugs in ``evolve``.
+
+.. _`this query`: http://bz.selenic.com/buglist.cgi?component=evolution&bug_status=UNCONFIRMED&bug_status=CONFIRMED&bug_status=NEED_EXAMPLE
 
 Installation and setup
 ----------------------
 
-TODO
+To use ``evolve``, you must:
+
+  #. Clone the ``evolve`` repository::
+
+       cd ~/src
+       hg clone https://bitbucket.org/marmoute/mutable-history
+
+  #. Configure the extension, either locally ::
+
+       hg config --local
+
+     or for all your repositories ::
+
+       hg config --edit
+
+     Then add ::
+
+       evolve=~/src/mutable-history/hgext/evolve.py
+
+     in the ``[extensions]`` section (adding the section if necessary). Use
+     the directory that you actually cloned to, of course.
+
 
 Next steps:
+-----------
+
   * For a practical guide to using ``evolve`` in a single repository,
     see the `user guide`_.
   * For more advanced tricks, see `sharing mutable history`_.
@@ -100,6 +142,6 @@
   * If you're coming from MQ, see the `MQ migration guide`_ (incomplete).
 
 .. _`user guide`: user-guide.html
+.. _`sharing mutable history`: sharing.html
 .. _`concepts`: concepts.html
-.. _`sharing mutable history`: sharing.html
 .. _`MQ migration guide`: from-mq.html
deleted file mode 100644
--- a/docs/instability.rst
+++ /dev/null
@@ -1,222 +0,0 @@
-.. Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
-..                Logilab SA        <contact@logilab.fr>
-
------------------------------------
-The instability Principle
------------------------------------
-
-
-
-An intrinsic contradiction
------------------------------------
-
-XXX starts by talking about getting ride of changeset.
-
-DVCSes bring two new major concepts to the version control scene:
-
-    * History is organized as a robust DAG,
-    * History can be rewritten.
-
-However, the two concepts are in contradiction:
-
-To achieve a robust history, three key elements are gathered in *changesets*:
-
-    * Full snapshot of the versioned content,
-    * Reference to the previous full snapshot used to build the new one,
-    * A description of the change which leads from the old content to the new content.
-
-All three elements are used to compute a *unique* hash that identifies the changeset
-(with various other metadata). This identification is a key part of DVCS design.
-
-This is a very useful property because changing B's parent means
-changing B's content too. This requires the creation of **another**
-changeset, which is semantically good.
-
-.. figure:: ./figures/edit-is-rewrite-step2.svg
-
-
-To avoid duplication, the older changeset is usually discarded from accessible
-history. I'm calling them *obsolete* changesets.
-
-
-But rewriting a changeset with children does not change the
-children's parents! And because children of the rewritten changeset
-still **depend** on the older "dead" version of the changeset, we
-cannot get rid of this dead version.
-
-::
-
-  Schema base,  A and A' and B.
-
-I'm calling these children **unstable** because they are based on a
-dead changeset and prevent people from getting rid of it.
-
-This instability is an **unavoidable consequence** of the strict dependency of
-changesets.  Rewriting history always needs to take it into account and
-provide a way to rewrite the descendants of the new changeset to avoid
-coexistence of the old and new versions of a rewritten changeset.
-
-
-Everybody is working around the issue
-------------------------------------------------
-
-I'm not claiming that rewriting history is impossible. People have been successfully
-doing it for years. However they all need to work around *instability*. Several
-workaround strategies exist.
-
-
-Rewriting all at once
-``````````````````````````
-
-The simplest way to avoid instability is to ensure rewriting
-operations always end in a stable situation. This is achieved by
-rewriting all affected changesets at the same time.
-
-Rewriting all descendants at the same time when rewriting a changeset.
-
-::
-
-  Schema!
-
-Several Mercurial commands apply it: rebase, collapse, histedit.
-Mercurial also refuses to amend changesets with descendants. The git
-branch design enforces this approach in git too.
-
-
-However, DVCS are **distributed**. This means that you do not control what
-happens outside your repository. Once a changeset has been exchanged *outside*,
-there is no way to be sure it does not have descendants somewhere else.
-Therefore **if you rewrite changeset that exists elsewhere, you can't eradicate
-the risk of instability.**
-
-Do not rewrite exchanged changesets
-```````````````````````````````````
-
-To work around the issue above, Mercurial introduced phases, which
-prevent you from rewriting shared changesets and ensure others can't
-pull certain changesets from you. But this is a very frustrating
-limitation that prevents you to efficiently sharing, reviewing and
-collaborating on mutable changesets.
-
-In the Git world, they use another approach to prevent instability. By
-convention only a single developer works on a changeset contained in
-a named branch. But once again this is a huge blocker for
-collaborating. Moreover clueless people **will** mess up social
-convention soon or later.
-
-
-Lose the DAG robustness
-````````````````````````````
-
-The other approach in Mercurial is to keep the mutable part of the
-history outside the DVCS constraint. This is the MQ approach of
-sticking a quilt queue over Mercurial.
-
-This allow much more flexible workflow but two major feature are lost in the
-process:
-
-:graceful merge: MQ uses plain patch to store changeset contents, which has
-                 problems in changing context. Applying your queue
-                 becomes very painful when context changes.
-
-:easy branching: A quilt queue is by definition a linear queue, increasing risk
-                 of conflict.
-
-It is possible to collaborate over versioned MQ! But you are going to
-have a lot of trouble.
-
-Ignore conflicts
-```````````````````````````````````
- 
-Another ignored issue is a conflicting rewrite of the same changeset.
-If a changeset is rewritten two times we have two newer versions,
-and duplicated history is complicated to merge.
-
-Mercurial work around by
-
-The "One set of mutable changset == One developer" mantra is also a way to work
-around conflicting rewriting of changeset. If two different people are able to
-
-The git branch model allows overwriting changeset version by another
-one, but it does not care about divergent version. It is the equivalent
-of "common ftp" source management for changesets.
-
-Facing The Danger Once And For All
-------------------------------------------------
-
-Above we saw that the more effort you put to avoid instability, the more options
-you deny. And even the most restrictive workflow can't guarantee that instability
-will never show up!
-
-Obsolete marker can handle the job
-```````````````````````````````````
-
-It is time to provide a full-featured solution to deal with
-instability and to stop working around the issue! This is why I
-am developing a new feature for Mercurial called "Obsolete markers".
-Obsolete markers have two key properties:
-
-
-* Any "old" changeset we want to get rid of is **explicitly** marked
-  as "obsolete" by history rewriting operations.
-
-  By explicitly marking the obsolete part of the history, we will be able to
-  easily detect instability situation.
-
-* Relations between old and new version of changesets are tracked by obsolete
-  markers.
-
-  By storing a meta-history of changeset evolution we are able to easily resolve
-  instability and edit conflicts [#]_ .
-
-.. [#] Edit conflicts is another major obstable to collaboration. See the
-       section dedicated to obsolete marker for details.
-
-Improved robustness == improved simplicity
-````````````````````````````````````````````````
-
-This proposal should **first** be seen as a safety measure.
-
-It allows detecting instability as soon as possible.
-
-::
-
-    $ hg pull
-    added 3 changeset
-    +2 unstable changeset
-    (do you want "hg evolve" ?)
-    working directory parent is obsolete!
-    $ hg push
-    outgoing unstable changesets
-    (use "hg evolve" or force the push)
-
-And it should not not encourage people to create instability.
-
-::
-
-    $ hg up 42
-    $ hg commit --amend
-    changeset have descendant.
-    $ hg commit --amend -f
-    +5 unstable changeset
-
-    $ hg rebase -D --rev 40::44
-    rebasing already obsolete changeset 42:AAA will conflict with newer version 48:BBB
-
-While allowing powerful feature
-````````````````````````````````````````````````
-
-
-* Help to automatically solve instability.
-
-* "prune" changeset remotely.
-
-* track resulting changeset when submitting patch//pull request.
-
-* Focus on what you do:
-
-  I do not like the "all at once" model of history rewriting. I'm comfortable
-  with instability and obsolete marker offer all the tool to safely create and
-  handle instability locally.
-
-
deleted file mode 100644
--- a/docs/obs-concept.rst
+++ /dev/null
@@ -1,390 +0,0 @@
-.. Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
-..                Logilab SA        <contact@logilab.fr>
-
------------------------------------------------------------
-Why Do We Need a New Concept
------------------------------------------------------------
-
-Current DVCSes are great tools for forging a series of flawless
-changesets on your own. But they perform poorly when it comes to
-**sharing** some work in progress and **collaborating** on such work
-in progress.
-
-When people forge a new version of a changeset they actually create a
-new changeset and get rid of the original changeset. Difficulties to
-collaborate mostly came from the way old content is *removed* from
-a repository.
-
-Mercurial Approach: Strip
------------------------------------------------------
-
-With the current version of mercurial, every changeset that exists in
-your repository is *visible* and *meaningful*. To delete old
-(rewritten) changesets, mercurial removes them from the repository
-storage with an operation called *strip*. After the *stripping*, the
-repository looks as if the changeset never existed.
-
-This approach is simple and effective except for one big
-drawback: you can remove changesets from **your repository only**. If
-a stripped changeset exists in another repository it touches, it will
-show up again. This is because a shared changeset becomes
-part of a shared global history. Stripping a changeset from all
-repositories is at best impractical and in most case impossible.
-
-As consequence, **you can not rewrite something once you exchange it with
-others**. The old version will still exist along side the new one [#]_.
-
-Moreover stripping changesets creates backup bundles. This allows
-restoration of the deleted changesets, but the process is painful.
-
-Finally, as the repository format is not optimized for deletion. stripping a
-changeset may be slow in some situations.
-
-To sum up, the strip approach is very simple but does not handle
-interaction with the outer world, which is very unfortunate for a
-*Distributed* VCS.
-
-.. [#] various work around exists but they require their own workflows
-   which are distinct from the very elegant basic workflow of
-   Mercurial.
-
-Git Approach: Overwrite Reference
------------------------------------------------------
-
-The Git approach to repository structure is a bit more complex: there
-can be any amount of unrelated changesets in a repository, and **only
-changesets referenced by a git branch** are *visible* and
-*meaningful*.
-
-
-.. figure:: ./figures/git.*
-
-
-This simplifies the process of getting rid of old changesets. You can
-just leave them in place and move the reference on the new one. You
-can then propagate this change by moving the git-branch on remote host
-with the newer version of the marker overwriting the older one.
-
-This approach goes a bit further but still has a major drawback:
-
-Because you **overwrite** the git-branch, you have no conflict
-resolution. The last to act wins. This makes collaboration on multiple
-changesets difficult because you can't merge concurrent updates on a
-changeset.
-
-Every overwrite is a forced operation where the operator says, "yes I
-want this to replace that". In highly distributed environments, a user
-may end up with conflicting references and no proper way to choose.
-
-Because of this way to visualize a repository, git-branches are a core
-part of git, which makes the user interface more complicated and
-constrains moving through history.
-
-Finally, even if all older changesets still exist in the repository,
-accesing them is still painful.
-
-
------------------------------------------------------
-The Obsolete Marker Concept
------------------------------------------------------
-
-
-As none of the concepts was powerful enough to fulfill the need of
-safely rewriting history, including easy sharing and collaboration on
-mutable history, we needed another one.
-
-Basic concept
------------------------------------------------------
-
-
-Every history rewriting operation stores the information that old rewritten
-changeset is replaced by newer version in a given set of changesets.
-
-All basic history rewriting operation can create an appropriate obsolete marker.
-
-
-.. figure:: ./figures/example-1-update.*
-
-    *Updating* a changeset
-
-    Create one obsolete marker: ``([A'] obsolete A)``
-
-
-
-.. figure:: ./figures/example-2-split.*
-
-    *Splitting* a changeset in multiple one
-
-    Create one obsolete marker ``([B1, B2] obsolete B)]``
-
-
-.. figure:: ./figures/simple-3-merge.*
-
-    *Merging* multiple changeset in a single one
-
-    Create two obsolete markers ``([C] obsolete A), ([C] obsolete B)``
-
-.. figure:: ./figures/simple-4-reorder.*
-
-    *Moving* changeset around
-
-    Reordering those two changesets need two obsolete markers:
-    ``([A'] obsolete A), ([B'] obsolete B)``
-
-
-
-.. figure:: ./figures/simple-5-delete.*
-
-    *Removing* a changeset:
-
-    One obselete marker ``([] obsolete B)``
-
-
-To conclude, a single obsolete marker express a relation from **0..n** new
-changesets to **1** old changeset.
-
-Basic Usage
------------------------------------------------------
-
-Obsolete markers create a perpendicular history: **a versioned
-changeset graph**. This means that offers the same features we have
-for versioned files but applied to changeset:
-
-First: we can display a **coherent view** of the history graph in which only a
-single version of your changesets is displayed by the UI.
-
-Second, because obsolete changeset content is still **available**. You can 
-you can
-
-    * **browse** the content of your obsolete commits,
-
-    * **compare** newer and older versions of a changeset,
-
-    * **restore** content of previously obsolete changesets.
-
-Finally, the obsolete marker can be **exchanged between
-repositories**. You are able to share the result on your history
-rewriting operations with other prople and **collaborate on the
-mutable part of the history**.
-
-Conflicting history rewriting operation can be detected and
-**resolved** as easily as conflicting changes on a file.
-
-
-Detecting and solving tricky situations
------------------------------------------------------
-
-History rewriting can lead to complex situations. The obsolete marker
-introduces a simple representation for this complex reality. But
-people using complex workflows will one day or another have to face
-the intrinsic complexity of some real-world situation.
-
-This section describes possible situations, defines precise sets of
-changesets involved in such situations and explains how the error
-cases can be resolved automatically using the available information.
-
-
-Obsolete changesets
-````````````````````
-
-Old changesets left behind by obsolete operation are called **obsolete**.
-
-With the current version of mercurial, this *obsolete* part is stripped from the
-repository before the end of every rewriting operation.
-
-.. figure:: ./figures/error-obsolete.*
-
-    Rebasing `B` and `C` on `A` (as `B'`, `C'`)
-
-    This rebase operation added two obsolete markers from new
-    changesets to old changesets. These two old changesets are now
-    part of the *obsolete* part of the history.
-
-In most cases, the obsolete set will be fully hidden to both the UI and
-discovery, hence users do not have to care about them unless they want to
-audit history rewriting operations.
-
-Unstable changesets
-```````````````````
-
-While exploring the possibilities of the obsolete marker a bit
-further, you may end up with *obsolete* changesets which have
-*non-obsolete* children. There is two common ways to achieve this:
-
-* Pull a changeset based of an old version of a changeset [#]_.
-
-* Use a partial rewriting operation. For example amend on a changeset with
-  children.
-
-*Non-obsolete* changeset based on *obsolete* one are called **unstable**
-
-.. figure:: ./figures/error-unstable.*
-
-    Amend `A` into `A'` leaving `B` behind.
-
-    In this situation we cannot consider `B` as *obsolete*. But we
-    have all the necessary data to detect `B` as an *unstable* branch
-    of the history because its parent `A` is *obsolete*. In addition,
-    we have enough data to automatically resolve this instability: we
-    know that the new version of `B` parent (`A`) is `A'`. We can
-    deduce that we should rebase `B` on `A'` to get a stable history
-    again.
-
-Proper warnings should be issued when part of the history becomes
-unstable. The UI will be able to use the obsolete marker to
-automatically suggest a resolution to the user of even carry them out
-for them.
-
-
-XXX details on automatic resolution for
-
-* movement
-
-* handling deletion
-
-* handling split on multiple head
-
-
-.. [#] For this to happen one needs to explicitly enable exchange of draft
-       changesets. See phase help for details.
-
-The two parts of the obsolete set
-``````````````````````````````````````
-
-The previous section shows that there could be two kinds of *obsolete*
-changesets:
-
-* an *obsolete* changeset with no or *obsolete* only descendants is called **extinct**.
-
-* an *obsolete* changeset with *unstable* descendants is called **suspended**.
-
-
-.. figure:: ./figures/error-extinct.*
-
-    Amend `A` and `C` leaving `B` behind.
-
-    In this example we have two *obsolete* changesets: `C` with no *unstable*
-    children is *extinct*. `A` with *unstable* descendant (`B`) is *suspended*.
-    `B` is *unstable* as before.
-
-
-Because nothing outside the obsolete set default on *extinct*
-changesets, they can be safely hidden in the UI and even garbage
-collected. *Suspended* changesets have to stay visible and available
-until their unstable descendant are rewritten into stable version.
-
-
-Conflicting rewrites
-````````````````````
-
-If people start to concurrently edit the same part of the history they will
-likely meet conflicting situations when a changeset has been rewritten in two
-different ways.
-
-
-.. figure:: ./figures/error-conflicting.*
-
-    Conflicting rewrite of `A` into `A'` and `A''`
-
-This kind of conflict is easy to detect with an obsolete marker
-because an obsolete changeset can have more than one new version. It
-may be seen as the multiple heads case. Mercurial warns you about this
-on pull. It is resolved the same way by a merge of A' and A'' that
-will keep the same parent than `A'` and `A''` with two obsolete
-markers pointing to both `A` and `A'`
-
-.. figure:: ./figures/explain-troubles-concurrent-10-solution.*
-
-Allowing multiple new changesets to obsolete a single one allows to
-distinguish a split changeset from a history rewriting conflict.
-
-Reliable history
-``````````````````````
-
-Obsolete markers help to smooth rewriting operation process. However
-they do not change the fact that **you should only rewrite the mutable
-part of the history**. The phase concept enforces this rule by
-explicitly defining a public immutable set of changesets. Rewriting
-operations refuse to work on public changesets, but there are still
-some corner cases where previously rewritten changesets are made
-public.
-
-Special rules apply for obsolete markers pointing to public changesets:
-
-* Public changesets are excluded from the obsolete set (public
-  changesets are never hidden or candidate to garbage collection)
-
-* *newer* version of a public changeset are called **bumped** and
-  highlighted as an error case.
-
-.. figure:: ./figures/explain-troubles-concurrent-10-sumup.*
-
-Solving such an error is easy. Because we know what changeset a
-*bumped* tries to rewrite, we can easily compute a smaller
-changeset containing only the change from the old *public* to the new
-*bumped*.
-
-.. figure:: ./figures/explain-troubles-concurrent-15-solution.*
-
-
-Conclusion
-----------------
-
-The obsolete marker is a powerful concept that allows mercurial to safely handle
-history rewriting operations. It is a new type of relation between Mercurial
-changesets which tracks the result of history rewriting operations.
-
-This concept is simple to define and provides a very solid base for:
-
-
-- Very fast history rewriting operations,
-
-- auditable and reversible history rewriting process,
-
-- clean final history,
-
-- sharing and collaborating on the mutable part of the history,
-
-- gracefully handling history rewriting conflicts,
-
-- various history rewriting UI's collaborating with an underlying common API.
-
-.. list-table:: Comparison on solution [#]_
-   :header-rows: 1
-
-   * - Solution
-     - Remove changeset locally
-     - Works on any point of your history
-     - Propagation
-     - Collaboration
-     - Speed
-     - Access to older version
-
-   * - Strip
-     - `+`
-     - `+`
-     - \
-     - \ 
-     - \ 
-     - `- -`
-
-   * - Reference
-     - `+`
-     - \ 
-     - `+`
-     - \ 
-     - `+`
-     - `-`
-
-   * - Obsolete
-     - `+`
-     - `+`
-     - `++`
-     - `++`
-     - `+`
-     - `+`
-
-
-
-.. [#] To preserve good tradition in comparison table, an overwhelming advantage
-       goes to the defended solution.
deleted file mode 100644
--- a/docs/obs-implementation.rst
+++ /dev/null
@@ -1,106 +0,0 @@
-.. Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
-..                Logilab SA        <contact@logilab.fr>
-
------------------------------------------------------
-Implementation of Obsolete Marker
------------------------------------------------------
-.. warning:: This document is still in heavy work in progress
-
-Main questions about Obsolete Marker Implementation
------------------------------------------------------
-
-
-
-
-How shall we exchange Marker over the Wire ?
-`````````````````````````````````````````````````````````
-
-We can have a lot of markers. We do not want to exchange data for the one we
-already know. Listkey() is not very appropriate there as you get everything.
-
-Moreover, we might want to only hear about Marker that impact changeset we are
-pulling.
-
-pushkey is not batchable yet (could be fixed)
-
-A dedicated discovery and exchange protocol seems mandatory here.
-
-
-Various technical details
------------------------------------------------------
-
-Some stuff that worse to note. some may deserve their own section later.
-
-storing old changeset
-``````````````````````
-
-The new general delta format allows a very efficient storage of two very similar
-changesets. Storing obsolete children using general delta takes no more place
-than storing the obsolete diff. Reverted file will even we reused. The whole
-operation will take much less space the strip backup.
-
-
-Abstraction from history rewriting UI
-```````````````````````````````````````````
-
-How Mercurial handles obsolete marker is independent from what decides
-to create them and what actual operation solves the error case. Any of
-the existing history rewriting UI (rebase, mq, histedit) can lay
-obsolete markers and resolve situation created by others. To go
-further, a hook system of obsolete marker creation would allow each
-mechanism to collaborate with other though a standard and central
-mechanism.
-
-
-Obsolete marker storage
-```````````````````````````
-
-The Obsolete marker will most likely be stored outside standard
-history. They are multiple reasons for this:
-
-First, obsolete markers are really perpendicular to standard history
-there is no strong reason to include it here other than convenience.
-
-Second, storing obsolete marker inside standard history means:
-
-* A changeset must be created every time an obsolete relation is added. Very
-  inconvenient for delete operation.
-
-* Obsolete marker must be forged at the creation of the new changeset. This
-  is very inconvenient for split operation. And in general it becomes
-  complicated to fix history afterward in particular when working with older
-  clients.
-
-Storing obsolete marker outside history have several pros:
-
-* It eases Exchange of obsolete markers without unnecessary obsolete
-  changeset contents.
-
-* It allows tuning the actual storage and protocol exchange while maintaining
-  compatibility with older clients through the wire (as we do the repository
-  format).
-
-* It eases the exchange of obsolete related information during
-  discovery to exchange obsolete changeset relevant to conflict
-  resolution. Exchanging such information deserves a dedicated
-  protocol.
-
-Persistent
-```````````````````````
-
-*Extinct* changeset and obsolete marker will most likely be garbage collected as
-some point. However, archive server may decide to keep them forever in order to
-keep a fully auditable history in its finest conception.
-
-
-Current status
------------------------------------------------------
-
-Obsolete marker are partialy in core.
-
-2.3:
-
-- storage over obsolete marker
-- exchange suing pushkey
-- extinct changeset are properly hidden
-- extinct changeset are excluded from exchange
--- a/docs/obs-terms.rst
+++ b/docs/obs-terms.rst
@@ -1,12 +1,12 @@
 .. Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
 ..                Logilab SA        <contact@logilab.fr>
 
------------------------------------------------------------
+-----------------------------------
 Terminology of the obsolete concept
------------------------------------------------------------
+-----------------------------------
 
 Obsolete markers
----------------------------------
+----------------
 
 The mutable concept is based on **obsolete markers**. Creating an obsolete
 marker registers a relation between an old obsoleted changeset and its newer
@@ -54,7 +54,7 @@
           better distinction between *direct successors* and **any successors**.
 
 Possible changesets "type"
----------------------------------
+--------------------------
 
 The following table describes names and behaviors of changesets affected by
 obsolete markers. The left column describes generic categories and the right
@@ -182,7 +182,7 @@
 
 
 Command and operation name
----------------------------------
+--------------------------
 
 
 Existing terms
@@ -196,7 +196,7 @@
 
 
 Uncommit
-`````````````
+````````
 
 Remove files from a commit (and leave them as dirty in the working directory)
 
@@ -204,14 +204,14 @@
 `rollback` usage.
 
 Fold
-``````````
+````
 
 Collapse multiple changesets into a unique one.
 
 The *evolve* extension will have a `fold` command.
 
 Prune
-``````````
+`````
 
 Make a changeset obsolete without successors.
 
@@ -223,7 +223,7 @@
 - obsolete: too vague, too long and too generic.
 
 evolve
-```````````````
+``````
 
 Automatically resolve *troublesome* changesets
 (*unstable*, *bumped* and *divergent*)
deleted file mode 100644
--- a/docs/qsync.rst
+++ /dev/null
@@ -1,19 +0,0 @@
-.. Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
-..                Logilab SA        <contact@logilab.fr>
-
----------------------------------------------------------------------
-Qsync: Mercurial to MQ exporter
----------------------------------------------------------------------
-
-
-People may have tools or co-workers that expect to receive mutable history using
-a versioned MQ repository.
-
-For this purpose you can use the ``qsync`` extension.
-
-
-To enable the evolve extension use::
-
-    $ hg clone http://hg-dev.octopoid.net/hgwebdir.cgi/mutable-history/
-    $ mutable-history/iqsync-enable.sh >> ~/.hgrc
-    $ hg help qsync
--- a/docs/sharing.rst
+++ b/docs/sharing.rst
@@ -4,13 +4,17 @@
 Evolve: Shared Mutable History
 ------------------------------
 
+.. contents::
+
 Once you have mastered the art of mutable history in a single
-repository, you might want to move up to the next level: *shared*
-mutable history. ``evolve`` lets you push and pull draft changesets
-between repositories along with their obsolescence markers. This opens
-up a number of interesting possibilities.
+repository (see the `user guide`_), you can move up to the next level:
+*shared* mutable history. ``evolve`` lets you push and pull draft
+changesets between repositories along with their obsolescence markers.
+This opens up a number of interesting possibilities.
 
-The most common scenario is a single developer working across two
+.. _`user guide`: user-guide.html
+
+The simplest scenario is a single developer working across two
 computers. Say you're working on code that must be tested on a remote
 test server, probably in a rack somewhere, only accessible by SSH, and
 running an “enterprise-grade” (out-of-date) OS. But you probably
@@ -33,19 +37,22 @@
 accidental ``rsync`` in the wrong direction could destroy hours of
 work.
 
-Using Mercurial with ``evolve`` to share mutable history solves all of
-these problems. As with single-repository ``evolve``, you can commit
+Using Mercurial with ``evolve`` to share mutable history solves these
+problems. As with single-repository ``evolve``, you can commit
 whenever the code is demonstrably better, even if all the tests aren't
 passing yet—just ``hg amend`` when they are. And you can transfer
 those half-baked changesets between repositories to try things out on
 your test server before anything is carved in stone.
 
-A less common scenario is multiple developers sharing mutable history.
-(This is in fact how Mercurial itself is developed.) We'll cover this
-scenario later. But first, single-user sharing.
+A less common scenario is multiple developers sharing mutable history,
+typically for code review. We'll cover this scenario later. But first,
+single-user sharing.
+
+Sharing with a single developer
+-------------------------------
 
 Publishing and non-publishing repositories
-------------------------------------------
+==========================================
 
 The key to shared mutable history is to keep your changesets in
 *draft* phase as you pass them around. Recall that by default, ``hg
@@ -55,20 +62,25 @@
 (Short version: set ``phases.publish`` to ``false``. Long version
 follows.)
 
-Setting things up
------------------
+Setting up
+==========
 
-We'll work an example with three local repositories, although in the
-real world they'd most likely be on three different computers. First,
-the public repository is where tested, polished changesets live, and
-it is where you push/pull changesets to/from the rest of your team. ::
+We'll work through an example with three local repositories, although
+in the real world they'd most likely be on three different computers.
+First, the ``public`` repository is where tested, polished changesets
+live, and it is where you synchronize with the rest of your team. ::
 
   $ hg init public
 
-We'll need two clones where work gets done::
+We'll need two clones where work gets done, ``test-repo`` and
+``dev-repo``::
 
-  $ hg clone -q public test-repo
-  $ hg clone -q test-repo dev-repo
+  $ hg clone public test-repo
+  updating to branch default
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg clone test-repo dev-repo
+  updating to branch default
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 ``dev-repo`` is your local machine, with GUI merge tools and IDEs and
 everything configured just the way you like it. ``test-repo`` is the
@@ -76,27 +88,30 @@
 we'll develop in ``dev-repo``, push to ``test-repo``, test and polish
 there, and push to ``public``.
 
-The key to making this whole thing work is to make ``test-repo``
-non-publishing::
+The key to shared mutable history is to make the target repository, in
+this case ``test-repo``, non-publishing. And, of course, we have to
+enable ``evolve`` in both ``test-repo`` and ``dev-repo``.
 
-  $ cat >> test-repo/.hg/hgrc <<EOF
+First, edit the configuration for ``test-repo``::
+
+  $ hg -R test-repo config --edit --local
+
+and add ::
+
   [phases]
   publish = false
-  EOF
 
-We also have to configure ``evolve`` in both ``test-repo`` and
-``dev-repo``, so that we can amend and evolve in both of them. ::
-
-  $ cat >> test-repo/.hg/hgrc <<EOF
   [extensions]
-  rebase =
   evolve = /path/to/mutable-history/hgext/evolve.py
-  EOF
-  $ cat >> dev-repo/.hg/hgrc <<EOF
+
+Then edit the configuration for ``dev-repo``::
+
+  $ hg -R dev-repo config --edit --local
+
+and add ::
+
   [extensions]
-  rebase =
   evolve = /path/to/mutable-history/hgext/evolve.py
-  EOF
 
 Keep in mind that in real life, these repositories would probably be
 on separate computers, so you'd have to login to each one to configure
@@ -108,15 +123,20 @@
   $ echo 'my new project' > file1
   $ hg add file1
   $ hg commit -m 'create new project'
-  $ hg push -q
+  $ hg push
+  [...]
+  added 1 changesets with 1 changes to 1 files
 
 and pull that into the development repository::
 
   $ cd ../dev-repo
   $ hg pull -u
+  [...]
+  added 1 changesets with 1 changes to 1 files
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
-Amending a shared changeset
----------------------------
+Example 1: Amend a shared changeset
+===================================
 
 Everything you learned in the `user guide`_ applies to work done in
 ``dev-repo``. You can commit, amend, uncommit, evolve, and so forth
@@ -170,18 +190,21 @@
 we saw in the user guide)—but ``dev-repo`` knows nothing of these
 recent developments.
 
-  [figure SG02: rev 0:0dc9 public, rev 1:f649, 2:2a03 obsolete, rev 3:60ff draft -- but dev-repo same as in SG01]
+  [figure SG02: test-repo has rev 0:0dc9 public, rev 1:f649, 2:2a03 obsolete, rev 3:60ff draft; dev-repo same as in SG01]
 
 Let's resynchronize::
 
   $ cd ../dev-repo
   $ hg pull -u
+  [...]
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 As seen in figure 3, this transfers the new changeset *and* the
 obsolescence marker for revision 1. However, it does *not* transfer
-the temporary amend commit, because it is obsolete. Push and pull
+the temporary amend commit, because it is hidden. Push and pull
 transfer obsolesence markers between repositories, but they do not
-normally transfer obsolete changesets.
+transfer hidden changesets.
 
   [figure SG03: dev-repo grows new rev 2:60ff, marks 1:f649 obsolete]
 
@@ -189,8 +212,8 @@
 numbers in ``test-repo`` and ``dev-repo`` are no longer consistent. We
 *must* use changeset IDs.
 
-Amend again, locally
---------------------
+Example 2: Amend again, locally
+===============================
 
 This process can repeat. Perhaps you figure out a more elegant fix to
 the bug, and want to mutate history so nobody ever knows you had a
@@ -211,9 +234,10 @@
 Let's hop over to ``test-repo`` to test the more elegant fix::
 
   $ cd ../test-repo
-  $ hg update -q
+  $ hg update
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
-This time, all the tests pass, so no further amendment is required.
+This time, all the tests pass, so no further amending is required.
 This bug fix is finished, so we push it to the public repository::
 
   $ hg push
@@ -221,33 +245,263 @@
   added 1 changesets with 1 changes to 1 files
 
 Note that only one changeset—the final version, after two
-amendments—was actually pushed. Again, Mercurial normally doesn't
-transfer obsolete changesets on push and pull. (Specifically, it
-doesn't transfer *hidden* changesets: roughly speaking, obsolete
-changesets with no non-obsolete descendants. If you're curious, see
-the `concept guide`_ for the precise definition of hidden.)
+amendments—was actually pushed. Again, Mercurial doesn't transfer
+hidden changesets on push and pull.
 
 .. _`concept guide`: concepts.html
 
 So the picture in ``public`` is much simpler than in either
-``dev-repo`` or ``test-repo``. None of our missteps or amendments are
-visible publicly, just the final, beautifully polished changeset:
+``dev-repo`` or ``test-repo``. Neither our missteps nor our amendments
+are publicly visible, just the final, beautifully polished changeset:
 
   [figure SG05: public repo with rev 0:0dc9, 1:de61, both public]
 
 There is one important step left to do. Because we pushed from
 ``test-repo`` to ``public``, the pushed changeset is in *public* phase
-in those two repositories. But ``dev-repo`` knows nothing of this:
-that changeset is still *draft* there. If we're not careful, we might
+in those two repositories. But ``dev-repo`` has been out-of-the-loop;
+changeset de61 is still *draft* there. If we're not careful, we might
 mutate history in ``dev-repo``, obsoleting a changeset that is already
-public. Let's avoid that situation for now by pulling from
-``test-repo`` down to ``dev-repo``::
+public. Let's avoid that situation for now by pushing up to
+``dev-repo``::
+
+  $ hg push ../dev-repo
+  pushing to ../dev-repo
+  searching for changes
+  no changes found
+
+Even though no *changesets* were pushed, Mercurial still pushed
+obsolescence markers and phase changes to ``dev-repo``.
+
+A final note: since this fix is now *public*, it is immutable. It's no
+longer possible to amend it::
+
+  $ hg amend -m 'fix bug 37'
+  abort: cannot amend public changesets
+
+This is, after all, the whole point of Mercurial's phases: to prevent
+rewriting history that has already been published.
+
+Sharing with multiple developers: code review
+---------------------------------------------
+
+Now that you know how to share your own mutable history across
+multiple computers, you might be wondering if it makes sense to share
+mutable history with others. It does, but you have to be careful, stay
+alert, and *communicate* with your peers.
+
+Code review is a good use case for sharing mutable history across
+multiple developers: Alice commits a draft changeset, submits it for
+review, and amends her changeset until her reviewer is satisfied.
+Meanwhile, Bob is also committing draft changesets for review,
+amending until his reviewer is satisfied. Once a particular changeset
+passes review, the respective author (Alice or Bob) pushes it to the
+public (publishing) repository.
+
+Incidentally, the reviewers here can be anyone: maybe Bob and Alice
+review each other's work; maybe the same third party reviews both; or
+maybe they pick different experts to review their work on different
+parts of a large codebase. Similarly, it doesn't matter if reviews are
+conducted in person, by email, or by carrier pigeon. Code review is
+outside of the scope of Mercurial, so all we're looking at here
+is the mechanics of committing, amending, pushing, and pulling.
+
+Setting up
+==========
+
+To demonstrate, let's start with the ``public`` repository as we left
+it in the last example, with two immutable changesets (figure 5
+above). We'll clone a ``review`` repository from it, and then Alice
+and Bob will both clone from ``review``. ::
+
+  $ hg clone public review
+  updating to branch default
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg clone review alice
+  updating to branch default
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg clone review bob
+  updating to branch default
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+
+We need to configure Alice's and Bob's working repositories to enable
+``evolve``. First, edit Alice's configuration with ::
+
+  $ hg -R alice config --edit --local
+
+and add ::
+
+  [extensions]
+  evolve = /path/to/mutable-history/hgext/evolve.py
+
+Then edit Bob's repository configuration::
+
+  $ hg -R bob config --edit --local
+
+and add the same text.
+
+Example 3: Alice commits and amends a draft fix
+===============================================
+
+We'll follow Alice working on a bug fix. We're going to use bookmarks to
+make it easier to understand multiple branch heads in the ``review``
+repository, so Alice starts off by creating a bookmark and committing
+her first attempt at a fix::
+
+  $ hg bookmark bug15
+  $ echo 'fix' > file2
+  $ hg commit -A -u alice -m 'fix bug 15 (v1)'
+  adding file2
+
+Note the unorthodox "(v1)" in the commit message. We're just using
+that to make this tutorial easier to follow; it's not something we'd
+recommend in real life.
+
+Of course Alice wouldn't commit unless her fix worked to her
+satisfaction, so it must be time to solicit a code review. She does
+this by pushing to the ``review`` repository::
+
+  $ hg push -B bug15
+  [...]
+  added 1 changesets with 1 changes to 1 files
+  exporting bookmark bug15
+
+(The use of ``-B`` is important to ensure that we only push the
+bookmarked head, and that the bookmark itself is pushed. See this
+`guide to bookmarks`_, especially the `Sharing Bookmarks`_ section, if
+you're not familiar with bookmarks.)
+
+.. _`guide to bookmarks`: http://mercurial.aragost.com/kick-start/en/bookmarks/
+.. _`Sharing Bookmarks`: http://mercurial.aragost.com/kick-start/en/bookmarks/#sharing-bookmarks
+
+Some time passes, and Alice receives her code review. As a result,
+Alice revises her fix and submits it for a second review::
 
-  $ cd ../dev-repo
-  $ hg pull -u
+  $ echo 'Fix.' > file2
+  $ hg amend -m 'fix bug 15 (v2)'
+  $ hg push
+  [...]
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  updating bookmark bug15
+
+Figure 6 shows the state of the ``review`` repository at this point.
+
+  [figure SG06: rev 2:fn1e is Alice's obsolete v1, rev 3:cbdf is her v2; both children of rev 1:de61]
+
+After a busy morning of bug fixing, Alice stops for lunch. Let's see
+what Bob has been up to.
+
+Example 4: Bob implements and publishes a new feature
+=====================================================
+
+Meanwhile, Bob has been working on a new feature. Like Alice, he'll
+use a bookmark to track his work, and he'll push that bookmark to the
+``review`` repository, so that reviewers know which changesets to
+review. ::
+
+  $ cd ../bob
+  $ echo 'stuff' > file1
+  $ hg bookmark featureX
+  $ hg commit -u bob -m 'implement feature X (v1)'          # rev 4:1636
+  $ hg push -B featureX
+  [...]
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  exporting bookmark featureX
+
+When Bob receives his code review, he improves his implementation a
+bit, amends, and submits the resulting changeset for review::
+
+  $ echo 'do stuff' > file1
+  $ hg amend -m 'implement feature X (v2)'                  # rev 5:0eb7
+  $ hg push
+  [...]
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  updating bookmark featureX
+
+Unfortunately, that still doesn't pass muster. Bob's reviewer insists
+on proper capitalization and punctuation. ::
+
+  $ echo 'Do stuff.' > file1
+  $ hg amend -m 'implement feature X (v3)'                  # rev 6:540b
+
+On the bright side, the second review said, "Go ahead and publish once
+you fix that." So Bob immediately publishes his third attempt::
+
+  $ hg push ../public
+  [...]
+  added 1 changesets with 1 changes to 1 files
+
+It's not enough just to update ``public``, though! Other people also
+use the ``review`` repository, and right now it doesn't have Bob's
+latest amendment ("v3", revision 6:540b), nor does it know that the
+precursor of that changeset ("v2", revision 5:0eb7) is obsolete. Thus,
+Bob pushes to ``review`` as well::
 
-Getting into trouble
---------------------
+  $ hg push ../review
+  [...]
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  updating bookmark featureX
+
+Figure 7 shows the result of Bob's work in both ``review`` and
+``public``.
+
+  [figure SG07: review includes Alice's draft work on bug 15, as well as Bob's v1, v2, and v3 changes for feature X: v1 and v2 obsolete, v3 public. public contains only the final, public implementation of feature X]
+
+Incidentally, it's important that Bob push to ``public`` *before*
+``review``. If he pushed to ``review`` first, then revision 6:540b
+would still be in *draft* phase in ``review``, but it would be
+*public* in both Bob's local repository and the ``public`` repository.
+That could lead to confusion at some point, which is easily avoided by
+pushing first to ``public``.
+
+Example 5: Alice integrates and publishes
+=========================================
+
+Finally, Alice gets back from lunch and sees that the carrier pigeon
+with her second review has arrived (or maybe it's in her email inbox).
+Alice's reviewer approved her amended changeset, so she pushes it to
+``public``::
+
+  $ hg push ../public
+  [...]
+  remote has heads on branch 'default' that are not known locally: 540ba8f317e6
+  abort: push creates new remote head cbdfbd5a5db2!
+  (pull and merge or see "hg help push" for details about pushing new heads)
+
+Oops! Bob has won the race to push first to ``public``. So Alice needs
+to integrate with Bob: let's pull his changeset(s) and see what the
+branch heads are. ::
+
+  $ hg pull ../public
+  [...]
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  (run 'hg heads' to see heads, 'hg merge' to merge)
+  $ hg log -G -q -r 'head()' --template '{rev}:{node|short}  ({author})\n'
+  o  5:540ba8f317e6  (bob)
+  |
+  | @  4:cbdfbd5a5db2  (alice)
+  |/
+
+We'll assume Alice and Bob are perfectly comfortable with rebasing
+changesets. (After all, they're already using mutable history in the
+form of ``amend``.) So Alice rebases her changeset on top of Bob's and
+publishes the result::
+
+  $ hg rebase -d 5
+  $ hg push ../public
+  [...]
+  added 1 changesets with 1 changes to 1 files
+  $ hg push ../review
+  [...]
+  added 1 changesets with 0 changes to 0 files
+  updating bookmark bug15
+
+The result, in both ``review`` and ``public`` repositories, is shown
+in figure 8.
+
+  [figure SG08: review shows v1 and v2 of Alice's fix, then v1, v2, v3 of Bob's feature, finally Alice's fix rebased onto Bob's. public just shows the final public version of each changeset]
+
+Getting into trouble with shared mutable history
+------------------------------------------------
 
 Mercurial with ``evolve`` is a powerful tool, and using powerful tools
 can have consequences. (You can cut yourself badly with a sharp knife,
@@ -258,31 +512,121 @@
 the most common type of troubled changeset. (Recall that a
 non-obsolete changeset with obsolete ancestors is unstable.)
 
-Two other types of trouble can crop up: *bumped* and *divergent*
+Two other types of trouble can happen: *divergent* and *bumped*
 changesets. Both are more likely with shared mutable history,
 especially mutable history shared by multiple developers.
 
-To demonstrate, let's start with the ``public`` repository as we left
-it in the last example, with two immutable changesets (figure 5
-above). Two developers, Alice and Bob, start working from this point::
+Setting up
+==========
 
-  $ hg clone -q public alice
-  $ hg clone -q public bob
+For these examples, we're going to use a slightly different workflow:
+as before, Alice and Bob share a ``public`` repository. But this time
+there is no ``review`` repository. Instead, Alice and Bob put on their
+cowboy hats, throw good practice to the wind, and pull directly from
+each other's working repositories.
+
+So we throw away everything except ``public`` and reclone::
 
-We need to configure Alice's and Bob's working repositories similar to
-``test-repo``, i.e. make them non-publishing and enable ``evolve``::
+  $ rm -rf review alice bob
+  $ hg clone public alice
+  updating to branch default
+  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg clone public bob
+  updating to branch default
+  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
-  $ cat >> alice/.hg/hgrc <<EOF
-  [phases]
-  publish = false
+Once again we have to configure their repositories: enable ``evolve``
+and (since Alice and Bob will be pulling directly from each other)
+make their repositories non-publishing. Edit Alice's configuration::
+
+  $ hg -R alice config --edit --local
+
+and add ::
+
   [extensions]
   rebase =
   evolve = /path/to/mutable-history/hgext/evolve.py
-  EOF
-  $ cp alice/.hg/hgrc bob/.hg/hgrc
+
+  [phases]
+  publish = false
+
+Then edit Bob's repository configuration::
+
+  $ hg -R bob config --edit --local
+
+and add the same text.
+
+Example 6: Divergent changesets
+===============================
+
+When an obsolete changeset has two successors, those successors are
+*divergent*. One way to get into such a situation is by failing to
+communicate with your teammates. Let's see how that might happen.
+
+First, we'll have Bob commit a bug fix that could still be improved::
+
+  $ cd bob
+  $ echo 'pretty good fix' >> file1
+  $ hg commit -u bob -m 'fix bug 24 (v1)'                   # rev 4:2fe6
+
+Since Alice and Bob are now in cowboy mode, Alice pulls Bob's draft
+changeset and amends it herself. ::
+
+  $ cd ../alice
+  $ hg pull -u ../bob
+  [...]
+  added 1 changesets with 1 changes to 1 files
+  $ echo 'better fix (alice)' >> file1
+  $ hg amend -u alice -m 'fix bug 24 (v2 by alice)'
+
+But Bob has no idea that Alice just did this. (See how important good
+communication is?) So he implements a better fix of his own::
+
+  $ cd ../bob
+  $ echo 'better fix (bob)' >> file1
+  $ hg amend -u bob -m 'fix bug 24 (v2 by bob)'             # rev 6:a360
+
+At this point, the divergence exists, but only in theory: Bob's
+original changeset, 4:2fe6, is obsolete and has two successors. But
+those successors are in different repositories, so the trouble is not
+visible to anyone yet. It will be as soon as Bob pulls from Alice's
+repository (or vice-versa). ::
+
+  $ hg pull ../alice
+  [...]
+  added 1 changesets with 1 changes to 2 files (+1 heads)
+  (run 'hg heads' to see heads, 'hg merge' to merge)
+  2 new divergent changesets
+
+Figure 9 shows the situation in Bob's repository.
+
+  [figure SG09: Bob's repo with 2 heads for the 2 divergent changesets, 6:a360 and 7:e3f9; wc is at 6:a360; both are successors of obsolete 4:2fe6, hence divergence]
+
+Now we need to get out of trouble. As usual, the answer is to evolve
+history. ::
+
+  $ HGMERGE=internal:other hg evolve
+  merge:[6] fix bug 24 (v2 by bob)
+  with: [7] fix bug 24 (v2 by alice)
+  base: [4] fix bug 24 (v1)
+  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
+
+Figure 10 shows how Bob's repository looks now.
+
+  [figure SG10: only one visible head, 9:5ad6, successor to hidden 6:a360 and 7:e3f9]
+
+We carefully dodged a merge conflict by specifying a merge tool
+(``internal:other``) that will take Alice's changes over Bob's. (You
+might wonder why Bob wouldn't prefer his own changes by using
+``internal:local``. He's avoiding a `bug`_ in ``evolve`` that occurs
+when evolving divergent changesets using ``internal:local``.)
+
+.. _`bug`: https://bitbucket.org/marmoute/mutable-history/issue/48/
+
+** STOP HERE: WORK IN PROGRESS **
 
 Bumped changesets: only one gets on the plane
----------------------------------------------
+=============================================
 
 If two people show up at the airport with tickets for the same seat on
 the same plane, only one of them gets on the plane. The would-be
@@ -301,15 +645,19 @@
 
   $ cd alice
   $ echo 'fix' > file2
-  $ hg commit -q -A -m 'fix bug 15'
+  $ hg commit -A -m 'fix bug 15'
+  adding file2
 
 Now Bob has a bad idea: he decides to pull whatever Alice is working
 on and tweak her bug fix to his taste::
 
   $ cd ../bob
-  $ hg pull -q -u ../alice
+  $ hg pull -u ../alice
+  [...]
+  added 1 changesets with 1 changes to 1 files
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo 'Fix.' > file2
-  $ hg amend -q -A -m 'fix bug 15 (amended)'
+  $ hg amend -A -m 'fix bug 15 (amended)'
 
 (Note the lack of communication between Alice and Bob. Failing to
 communicate with your colleagues is a good way to get into trouble.
@@ -322,7 +670,9 @@
 publish. ::
 
   $ cd ../alice
-  $ hg push  -q
+  $ hg push
+  [...]
+  added 1 changesets with 1 changes to 1 files
 
 This introduces a contradiction: in Bob's repository, changeset 2:e011
 (his copy of Alice's fix) is obsolete, since Bob amended it. But in
@@ -359,82 +709,6 @@
 
   [figure SG08: 5:227d is new, formerly bumped changeset 4:fe88 now hidden]
 
-Divergent changesets
---------------------
-
-In addition to *unstable* and *bumped*, there is a third kind of
-troubled changeset: *divergent*. When an obsolete changeset has two
-successors, those successors are divergent.
-
-To illustrate, let's start Alice and Bob at the same
-point—specifically, the point where Alice's repository currently
-stands. Bob's repository is a bit of a mess, so we'll throw it away
-and start him off with a copy of Alice's repository::
-
-  $ cd ..
-  $ rm -rf bob
-  $ cp -rp alice bob
-
-Now we'll have Bob commit a bug fix that could still be improved::
-
-  $ cd bob
-  $ echo 'pretty good fix' >> file1
-  $ hg commit -u bob -m 'fix bug 24 (v1)'
-
-This time, Alice meddles with her colleague's work (still a bad
-idea)::
-
-  $ cd ../alice
-  $ hg pull -q -u ../bob
-  $ echo 'better (alice)' >> file1
-  $ hg amend -u alice -m 'fix bug 24 (v2 by alice)'
-
-Here's where things change from the "bumped" scenario above: this
-time, the original author (Bob) decides to amend his changeset too. ::
-
-  $ cd ../bob
-  $ echo 'better (bob)' >> file1
-  $ hg amend -u bob -m 'fix bug 24 (v2 by bob)'
-
-At this point, the divergence exists, but only in theory: Bob's
-original changeset, 3:fe81, is obsolete and has two successors. But
-those successors are in different repositories, so the trouble is not
-visible to anyone yet. It will be as soon as one of our players pulls
-from the other's repository. Let's make Bob the victim again::
-
-  $ hg pull -q -u ../alice
-  not updating: not a linear update
-  (merge or update --check to force update)
-  2 new divergent changesets
-
-The “not a linear update” is our first hint that something is wrong,
-but of course “2 new divergent changesets” is the real problem. Figure
-9 shows both problems.
-
-  [figure SG09: bob's repo with 2 heads for the 2 divergent changesets, 5:fc16 and 6:694f; wc is at 5:fc16, hence update refused; both are successors of obsolete 3:fe81, hence divergence]
-
-Now we need to get out of trouble. Unfortunately, a `bug`_ in
-``evolve`` means that the usual answer (run ``hg evolve --all``) does
-not work. Bob has to figure out the solution on his own: in this case,
-merge. To avoid distractions, we'll set ``HGMERGE`` to make Mercurial
-resolve any conflicts in favour of Bob. ::
-
-  $ HGMERGE=internal:local hg merge
-  $ hg commit -m merge
-
-.. _`bug`: https://bitbucket.org/marmoute/mutable-history/issue/48/
-
-This is approximately what ``hg evolve`` would do in this
-circumstance, if not for that bug. One annoying difference is that
-Mercurial thinks the two divergent changesets are still divergent,
-which you can see with a simple revset query::
-
-  $ hg log -q -r 'divergent()'
-  5:fc16901f4d7a
-  6:694fd0f6b503
-
-(That annoyance should go away when the bug is fixed.)
-
 Conclusion
 ----------
 
--- a/docs/user-guide.rst
+++ b/docs/user-guide.rst
@@ -205,7 +205,7 @@
 Changeset obsolescence under the hood
 -------------------------------------
 
-So far, everything has gone just fine. We haven't run into merge
+So far, everything has gone just fine: we haven't run into merge
 conflicts or other trouble. Before we start exploring advanced usage
 that can run into trouble, let's step back and see what happens when
 Mercurial marks changesets obsolete. That will make it much easier to
@@ -217,8 +217,8 @@
 *successors*. The obsolete changesets are the *precursors* of their
 successors. This applies equally to built-in commands (``commit
 --amend``), commands added by ``evolve`` (``amend``, ``prune``,
-``uncommit``, ``fold``), and even commands provided by other
-extensions (``rebase``, ``histedit``).
+``uncommit``, ``fold``), and commands provided by other extensions
+(``rebase``, ``histedit``).
 
 Another way of looking at it is that obsolescence is second-order
 version control, i.e. the history of your history. We'll cover this in
@@ -248,10 +248,38 @@
 history modification work is not yet done. We'll see examples of that
 later, when we cover advanced usage.
 
-Seeing hidden changesets
-========================
+
+Understanding revision numbers and hidden changesets
+====================================================
+
+As the name implies, hidden changesets are normally not visible. If
+you run ``hg log`` on the repository from Figure 2, Mercurial will
+show revisions 0 and 3, but not 1 and 2. That's something you don't
+see with plain vanilla Mercurial—normally, revision *N* is always
+followed by revision *N* + 1.
+
+This is just the visible manifestation of hidden changesets. If
+revision 0 is followed by revision 3, that means there are two hidden
+changesets, 1 and 2, in between.
+
+To see those hidden changesets, use the ``--hidden`` option::
 
-TODO
+  $ hg --hidden log --graph --template '{rev}:{node|short}  {desc|firstline}\n'
+  @  3:934359450037  implement feature Y
+  |
+  | x  2:6c5f78d5d467  temporary amend commit for fe0ecd3bd2a4
+  | |
+  | x  1:fe0ecd3bd2a4  implement feature Y
+  |/
+  o  0:08c4b6f4efc8  init
+
+Note that changeset IDs are still the permanent, immutable identifier
+for changesets. Revision numbers are, as ever, a handy shorthand that
+work in your local repository, but cannot be used across repositories.
+They also have the useful property of showing when there are hidden
+changesets lurking under the covers, which is why this document uses
+revision numbers.
+
 
 Under the hood: Prune an unwanted changeset
 ===========================================
@@ -306,28 +334,14 @@
 Obsolete is not hidden
 ======================
 
-TODO
-
-
-Understanding revision numbers
-==============================
+So far, every obsolete changeset we have seen is also hidden. However,
+these are *not* the same thing—that's why they have different names.
+It's entirely possible to have obsolete changesets that are not
+hidden. We'll see examples of that soon, when we create *unstable*
+changesets.
 
-If you're trying these examples on your own, especially using ``hg
-log`` without ``--hidden``, you have probably noticed some funny
-business going on with revision numbers: there are now gaps in the
-sequence. That's something you don't see with plain vanilla Mercurial;
-normally, revision N is always followed by revision N+1.
-
-This is just the visible manifestation of hidden changesets. If
-revision 95 is followed by revision 98, that means there are two
-hidden changesets, 96 and 97, in between.
-
-Note that changeset IDs are still the permanent, immutable identifier
-for changesets. Revision numbers are, as ever, a handy shorthand that
-work in your local repository, but cannot be used across repositories.
-They also have the useful property of showing when there are hidden
-changesets lurking under the covers, which is why this document uses
-revision numbers.
+Note that all hidden changesets are obsolete: hidden is a subset of
+obsolete.
 
 
 Life with ``evolve`` (advanced usage)
@@ -353,7 +367,7 @@
 ===================================
 
 Sometimes you don't notice your mistakes until after you have
-committed some new changesets on top of them. ::
+committed new changesets on top of them. ::
 
   $ hg commit -m 'fix bug 17'         # rev 11 (mistake here)
   $ hg commit -m 'cleanup'            # rev 12
@@ -363,12 +377,12 @@
 fixes your mistake. That works, of course, but it makes you look bad:
 you made a mistake, and the record of that mistake is recorded in
 history for all eternity. (If the mistake was in the commit message,
-too bad.)
+too bad: you cannot fix it.)
 
 More subtly, there now exist changesets that are *worse* than what
 came before—the code no longer builds, the tests don't pass, or
-similar. Anyone reviewing these patches will waste time noticing the
-error in the earlier patch, and then the correction later on.
+similar. Anyone reviewing these patches will waste time on the error
+in the earlier patch, and then the correction later on.
 
 You can avoid all this by amending the bad changeset and *evolving*
 subsequent history. Here's how it works, assuming you have just
@@ -558,4 +572,30 @@
 Example 11: Recover an obsolete changeset
 =========================================
 
-TODO
+Sometimes you might obsolete a changeset, and then change your mind. You'll
+probably start looking for an “unobsolete” command to restore a changeset
+to normal state. For complicated implementation reasons, that command
+doesn't exist. (If you have already pushed an obsolescence marker to
+another repo, then Mercurial would need a way to revoke that remote
+obsolesence marker. That's a hard problem.)
+
+Instead, ``evolve`` provides a ``touch`` command to resurrect an
+obsolete changeset. An unexpected quirk: you almost certainly need to
+use ``--hidden``, since obsolete changesets tend to be hidden, and you
+can't reference a hidden changeset otherwise. Typical usage thus looks
+like ::
+
+  $ hg --hidden touch REV
+
+This creates a new, normal changeset which is the same as ``REV``—except
+with a different changeset ID. The new changeset will have the same parent
+as ``REV``, and will be a successor of ``REV``.
+
+The current implementation of ``hg touch`` is not ideal, and is likely to
+change in the future. Consider the history in Figure 12, where revision 27
+is obsolete and the child of 26, also obsolete. If we ``hg touch 27``, that
+creates a new revision which is a non-obsolete child of 26—i.e., it is
+unstable. It's also *divergent*, another type of trouble that we'll learn
+about in the `next section`_.
+
+.. _`next section`: sharing.html
--- a/hgext/drophack.py
+++ b/hgext/drophack.py
@@ -119,7 +119,7 @@
             newrevs = repo.revs('max(::. - %ld)', revs)
             if newrevs:
                 assert len(newrevs) == 1
-                newrev = newrevs[0]
+                newrev = newrevs.first()
             else:
                 newrev = -1
             commands.update(ui, repo, newrev)
@@ -150,7 +150,7 @@
                 stripmarker(ui, repo, markers)
         # strip the changeset
         with timed(ui, 'strip nodes'):
-            repair.strip(ui, repo, allnodes, backup="all", topic='drophack')
+            repair.strip(ui, repo, list(allnodes), backup="all", topic='drophack')
 
     finally:
         lockmod.release(lock, wlock)
--- a/hgext/evolve.py
+++ b/hgext/evolve.py
@@ -19,15 +19,17 @@
     - improves some aspect of the early implementation in Mercurial core
 '''
 
-testedwith = '3.0.1 3.1'
+__version__ = '5.1.5'
+testedwith = '3.3.3 3.4.1'
 buglink = 'http://bz.selenic.com/'
 
 import sys, os
 import random
 from StringIO import StringIO
 import struct
-import urllib
 import re
+import socket
+import errno
 sha1re = re.compile(r'\b[0-9a-f]{6,40}\b')
 
 import mercurial
@@ -44,7 +46,6 @@
     gboptslist = gboptsmap = None
 
 
-from mercurial import base85
 from mercurial import bookmarks
 from mercurial import cmdutil
 from mercurial import commands
@@ -60,7 +61,6 @@
 from mercurial import node
 from mercurial import phases
 from mercurial import patch
-from mercurial import pushkey
 from mercurial import revset
 from mercurial import scmutil
 from mercurial import templatekw
@@ -70,7 +70,6 @@
 from mercurial import wireproto
 from mercurial import localrepo
 from mercurial.hgweb import hgweb_mod
-from mercurial import bundle2
 
 cmdtable = {}
 command = cmdutil.command(cmdtable)
@@ -84,10 +83,14 @@
     def memfilectx(repo, *args, **kwargs):
         return oldmemfilectx(*args, **kwargs)
 else:
-    raise util.Abort('Your Mercurial is too old for this version of Evolve\n'
-                     'requires version 3.0.1 or above')
-
-
+    raise ImportError('evolve needs version %s or above' % min(testedwith.split()))
+
+aliases, entry = cmdutil.findcmd('commit', commands.table)
+hasinteractivemode = any(['interactive' in e for e in entry[1]])
+if hasinteractivemode:
+    interactiveopt = [['i', 'interactive', None, _('use interactive mode')]]
+else:
+    interactiveopt = []
 # This extension contains the following code
 #
 # - Extension Helper code
@@ -97,19 +100,6 @@
 
 
 #####################################################################
-### Compatibility with core                                       ###
-#####################################################################
-
-
-def retractboundary(repo, tr, targetphase, nodes):
-    """Older mercurial version does not move phase within a transaction"""
-    try:
-        return phases.retractboundary(repo, tr, targetphase, nodes)
-    except TypeError:
-        return phases.retractboundary(repo, targetphase, nodes)
-
-
-#####################################################################
 ### Extension helper                                              ###
 #####################################################################
 
@@ -254,7 +244,7 @@
 
 
     def templatekw(self, keywordname):
-        """Decorated function is a revset keyword
+        """Decorated function is a template keyword
 
         The name of the keyword must be given as the decorator argument.
         The symbol is added during `extsetup`.
@@ -362,120 +352,6 @@
     if not opts.get('user') and opts.get('current_user'):
         opts['user'] = ui.username()
 
-
-createmarkers = obsolete.createmarkers
-if not util.safehasattr(obsolete.obsstore, 'relevantmarkers'):
-
-    @eh.wrapfunction(mercurial.obsolete, 'createmarkers')
-    def _createmarkers(orig, repo, relations, *args, **kwargs):
-        """register parent information at prune time"""
-        # every time this test is run, a kitten is slain.
-        # Change it as soon as possible
-        if '[,{metadata}]' in orig.__doc__:
-            relations = list(relations)
-            for idx, rel in enumerate(relations):
-                prec = rel[0]
-                sucs = rel[1]
-                if not sucs:
-                    meta = {}
-                    if 2 < len(rel):
-                        meta.update(rel[2])
-                    for i, p in enumerate(prec.parents(), 1):
-                        meta['p%i' % i] = p.hex()
-                    relations[idx] = (prec, sucs, meta)
-        return orig(repo, relations, *args, **kwargs)
-
-    def createmarkers(*args, **kwargs):
-        return obsolete.createmarkers(*args, **kwargs)
-
-    class pruneobsstore(obsolete.obsstore):
-
-        def __init__(self, *args, **kwargs):
-            self.prunedchildren = {}
-            return super(pruneobsstore, self).__init__(*args, **kwargs)
-
-        def _load(self, markers):
-            markers = self._prunedetectingmarkers(markers)
-            return super(pruneobsstore, self)._load(markers)
-
-
-        def _prunedetectingmarkers(self, markers):
-            for m in markers:
-                if not m[1]: # no successors
-                    meta = obsolete.decodemeta(m[3])
-                    if 'p1' in meta:
-                        p1 = node.bin(meta['p1'])
-                        self.prunedchildren.setdefault(p1, set()).add(m)
-                    if 'p2' in meta:
-                        p2 = node.bin(meta['p2'])
-                        self.prunedchildren.setdefault(p2, set()).add(m)
-                yield m
-
-    obsolete.obsstore = pruneobsstore
-
-    @eh.addattr(obsolete.obsstore, 'relevantmarkers')
-    def relevantmarkers(self, nodes):
-        """return a set of all obsolescence marker relevant to a set of node.
-
-        "relevant" to a set of node mean:
-
-        - marker that use this changeset as successors
-        - prune marker of direct children on this changeset.
-        - recursive application of the two rules on precursors of these markers
-
-        It  a set so you cannot rely on order"""
-        seennodes = set(nodes)
-        seenmarkers = set()
-        pendingnodes = set(nodes)
-        precursorsmarkers = self.precursors
-        prunedchildren = self.prunedchildren
-        while pendingnodes:
-            direct = set()
-            for current in pendingnodes:
-                direct.update(precursorsmarkers.get(current, ()))
-                direct.update(prunedchildren.get(current, ()))
-            direct -= seenmarkers
-            pendingnodes = set([m[0] for m in direct])
-            seenmarkers |= direct
-            pendingnodes -= seennodes
-            seennodes |= pendingnodes
-        return seenmarkers
-
-@command('debugobsoleterelevant',
-         [],
-         'REVSET')
-def debugobsoleterelevant(ui, repo, *revsets):
-    """print allobsolescence marker relevant to a set of revision"""
-    nodes = [ctx.node() for ctx in repo.set('%lr', revsets)]
-    markers = repo.obsstore.relevantmarkers(nodes)
-    for rawmarker in sorted(markers):
-        marker = obsolete.marker(repo, rawmarker)
-        cmdutil.showmarker(ui, marker)
-
-
-#####################################################################
-### Critical fix                                                  ###
-#####################################################################
-
-@eh.wrapfunction(mercurial.obsolete, '_readmarkers')
-def safereadmarkers(orig, data):
-    """safe maker wrapper to remove nullid succesors
-
-    Nullid successors was created by older version of evolve.
-    """
-    nb = 0
-    for marker in orig(data):
-        if nullid in marker[1]:
-            marker = (marker[0],
-                      tuple(s for s in marker[1] if s != nullid),
-                      marker[2],
-                      marker[3])
-            nb += 1
-        yield marker
-    if nb:
-        e = sys.stderr
-        print >> e, 'repo contains %i invalid obsolescence markers' % nb
-
 getrevs = obsolete.getrevs
 
 #####################################################################
@@ -522,9 +398,13 @@
     Changesets with troubles.
     """
     revset.getargs(x, 0, 0, 'troubled takes no arguments')
-    return repo.revs('%ld and (unstable() + bumped() + divergent())',
-                     subset)
-
+    troubled = set()
+    troubled.update(getrevs(repo, 'unstable'))
+    troubled.update(getrevs(repo, 'bumped'))
+    troubled.update(getrevs(repo, 'divergent'))
+    troubled = revset.baseset(troubled)
+    troubled.sort() # set is non-ordered, enforce order
+    return subset & troubled
 
 ### Obsolescence graph
 
@@ -535,16 +415,19 @@
     cs = set()
     nm = repo.changelog.nodemap
     markerbysubj = repo.obsstore.precursors
+    node = repo.changelog.node
     for r in s:
-        for p in markerbysubj.get(repo[r].node(), ()):
+        for p in markerbysubj.get(node(r), ()):
             pr = nm.get(p[0])
             if pr is not None:
                 cs.add(pr)
+    cs -= repo.changelog.filteredrevs # nodemap has no filtering
     return cs
 
 def _allprecursors(repo, s):  # XXX we need a better naming
     """transitive precursors of a subset"""
-    toproceed = [repo[r].node() for r in s]
+    node = repo.changelog.node
+    toproceed = [node(r) for r in s]
     seen = set()
     allsubjects = repo.obsstore.precursors
     while toproceed:
@@ -560,19 +443,22 @@
         pr = nm.get(p)
         if pr is not None:
             cs.add(pr)
+    cs -= repo.changelog.filteredrevs # nodemap has no filtering
     return cs
 
 def _successors(repo, s):
     """Successors of a changeset"""
     cs = set()
+    node = repo.changelog.node
     nm = repo.changelog.nodemap
     markerbyobj = repo.obsstore.successors
     for r in s:
-        for p in markerbyobj.get(repo[r].node(), ()):
+        for p in markerbyobj.get(node(r), ()):
             for sub in p[1]:
                 sr = nm.get(sub)
                 if sr is not None:
                     cs.add(sr)
+    cs -= repo.changelog.filteredrevs # nodemap has no filtering
     return cs
 
 def _allsuccessors(repo, s, haltonflags=0):  # XXX we need a better naming
@@ -580,7 +466,8 @@
 
     haltonflags allows to provide flags which prevent the evaluation of a
     marker.  """
-    toproceed = [repo[r].node() for r in s]
+    node = repo.changelog.node
+    toproceed = [node(r) for r in s]
     seen = set()
     allobjects = repo.obsstore.successors
     while toproceed:
@@ -600,6 +487,7 @@
         sr = nm.get(s)
         if sr is not None:
             cs.add(sr)
+    cs -= repo.changelog.filteredrevs # nodemap has no filtering
     return cs
 
 
@@ -619,9 +507,10 @@
     """``suspended()``
     Obsolete changesets with non-obsolete descendants.
     """
-    args = revset.getargs(x, 0, 0, 'suspended takes no arguments')
-    suspended = getrevs(repo, 'suspended')
-    return [r for r in subset if r in suspended]
+    revset.getargs(x, 0, 0, 'suspended takes no arguments')
+    suspended = revset.baseset(getrevs(repo, 'suspended'))
+    suspended.sort()
+    return subset & suspended
 
 
 @eh.revset('precursors')
@@ -629,9 +518,10 @@
     """``precursors(set)``
     Immediate precursors of changesets in set.
     """
-    s = revset.getset(repo, range(len(repo)), x)
-    cs = _precursors(repo, s)
-    return [r for r in subset if r in cs]
+    s = revset.getset(repo, revset.fullreposet(repo), x)
+    s = revset.baseset(_precursors(repo, s))
+    s.sort()
+    return subset & s
 
 
 @eh.revset('allprecursors')
@@ -639,9 +529,10 @@
     """``allprecursors(set)``
     Transitive precursors of changesets in set.
     """
-    s = revset.getset(repo, range(len(repo)), x)
-    cs = _allprecursors(repo, s)
-    return [r for r in subset if r in cs]
+    s = revset.getset(repo, revset.fullreposet(repo), x)
+    s = revset.baseset(_allprecursors(repo, s))
+    s.sort()
+    return subset & s
 
 
 @eh.revset('successors')
@@ -649,18 +540,20 @@
     """``successors(set)``
     Immediate successors of changesets in set.
     """
-    s = revset.getset(repo, range(len(repo)), x)
-    cs = _successors(repo, s)
-    return [r for r in subset if r in cs]
+    s = revset.getset(repo, revset.fullreposet(repo), x)
+    s = revset.baseset(_successors(repo, s))
+    s.sort()
+    return subset & s
 
 @eh.revset('allsuccessors')
 def revsetallsuccessors(repo, subset, x):
     """``allsuccessors(set)``
     Transitive successors of changesets in set.
     """
-    s = revset.getset(repo, range(len(repo)), x)
-    cs = _allsuccessors(repo, s)
-    return [r for r in subset if r in cs]
+    s = revset.getset(repo, revset.fullreposet(repo), x)
+    s = revset.baseset(_allsuccessors(repo, s))
+    s.sort()
+    return subset & s
 
 ### template keywords
 # XXX it does not handle troubles well :-/
@@ -670,7 +563,6 @@
     """:obsolete: String. The obsolescence level of the node, could be
     ``stable``, ``unstable``, ``suspended`` or ``extinct``.
     """
-    rev = ctx.rev()
     if ctx.obsolete():
         if ctx.extinct():
             return 'extinct'
@@ -738,28 +630,20 @@
         ui.warn(_('%i new divergent changesets\n') % newdivergents)
     return ret
 
-@eh.reposetup
-def _repostabilizesetup(ui, repo):
+@eh.wrapfunction(mercurial.exchange, 'push')
+def push(orig, repo, *args, **opts):
     """Add a hint for "hg evolve" when troubles make push fails
     """
-    if not repo.local():
-        return
-
-    class evolvingrepo(repo.__class__):
-        def push(self, remote, *args, **opts):
-            """wrapper around pull that pull obsolete relation"""
-            try:
-                result = super(evolvingrepo, self).push(remote, *args, **opts)
-            except util.Abort, ex:
-                hint = _("use 'hg evolve' to get a stable history "
-                         "or --force to ignore warnings")
-                if (len(ex.args) >= 1
-                    and ex.args[0].startswith('push includes ')
-                    and ex.hint is None):
-                    ex.hint = hint
-                raise
-            return result
-    repo.__class__ = evolvingrepo
+    try:
+        return orig(repo, *args, **opts)
+    except util.Abort, ex:
+        hint = _("use 'hg evolve' to get a stable history "
+                 "or --force to ignore warnings")
+        if (len(ex.args) >= 1
+            and ex.args[0].startswith('push includes ')
+            and ex.hint is None):
+            ex.hint = hint
+        raise
 
 def summaryhook(ui, repo):
     def write(fmt, count):
@@ -859,7 +743,7 @@
                               isexec='x' in flags,
                               copied=copied.get(path))
             return mctx
-        raise IOError()
+        return None
 
     message = cmdutil.logmessage(repo.ui, commitopts)
     if not message:
@@ -892,7 +776,7 @@
 class MergeFailure(util.Abort):
     pass
 
-def relocate(repo, orig, dest):
+def relocate(repo, orig, dest, keepbranch=False):
     """rewrite <rev> on dest"""
     if orig.rev() == dest.rev():
         raise util.Abort(_('tried to relocate a node on top of itself'),
@@ -901,12 +785,10 @@
                                 "manually with nothing to rebase - working "
                                 "directory parent is also destination"))
 
-    rebase = extensions.find('rebase')
-    # dummy state to trick rebase node
     if not orig.p2().rev() == node.nullrev:
         raise util.Abort(
             'no support for evolving merge changesets yet',
-            hint="Redo the merge and use `hg prune` to obsolete the old one")
+            hint="Redo the merge and use `hg prune <old> --succ <new>` to obsolete the old one")
     destbookmarks = repo.nodebookmarks(dest.node())
     nodesrc = orig.node()
     destphase = repo[nodesrc].phase()
@@ -934,32 +816,54 @@
             commitmsg = commitmsg.replace(sha1, newsha1[:len(sha1)])
         else:
             repo.ui.note(_('The stale commit message reference to %s could '
-                           'not be updated') % sha1)
+                           'not be updated\n') % sha1)
 
     tr = repo.transaction('relocate')
     try:
         try:
-            r = rebase.rebasenode(repo, orig.node(), dest.node(),
-                                  {node.nullrev: node.nullrev}, False)
-            if r[-1]: #some conflict
+            if repo['.'].rev() != dest.rev():
+                merge.update(repo, dest, False, True, False)
+            if bmactive(repo):
+                repo.ui.status(_("(leaving bookmark %s)\n") % bmactive(repo))
+            bmdeactivate(repo)
+            if keepbranch:
+                repo.dirstate.setbranch(orig.branch())
+            r = merge.graft(repo, orig, orig.p1(), ['local', 'graft'])
+            if r[-1]:  #some conflict
                 raise util.Abort(
                         'unresolved merge conflicts (see hg help resolve)')
-            cmdutil.duplicatecopies(repo, orig.node(), dest.node())
-            nodenew = rebase.concludenode(repo, orig.node(), dest.node(),
-                                          node.nullid, commitmsg)
+            if commitmsg is None:
+                commitmsg = orig.description()
+            extra = {'rebase_source': orig.hex()}
+
+            backup = repo.ui.backupconfig('phases', 'new-commit')
+            try:
+                targetphase = max(orig.phase(), phases.draft)
+                repo.ui.setconfig('phases', 'new-commit', targetphase, 'rebase')
+                # Commit might fail if unresolved files exist
+                nodenew = repo.commit(text=commitmsg, user=orig.user(),
+                                      date=orig.date(), extra=extra)
+            finally:
+                repo.ui.restoreconfig(backup)
         except util.Abort, exc:
+            repo.dirstate.beginparentchange()
+            repo.setparents(repo['.'].node(), nullid)
+            repo.dirstate.write()
+            # fix up dirstate for copies and renames
+            copies.duplicatecopies(repo, dest.rev(), orig.p1().rev())
+            repo.dirstate.endparentchange()
             class LocalMergeFailure(MergeFailure, exc.__class__):
                 pass
             exc.__class__ = LocalMergeFailure
             raise
         oldbookmarks = repo.nodebookmarks(nodesrc)
         if nodenew is not None:
-            retractboundary(repo, tr, destphase, [nodenew])
-            createmarkers(repo, [(repo[nodesrc], (repo[nodenew],))])
+            phases.retractboundary(repo, tr, destphase, [nodenew])
+            obsolete.createmarkers(repo, [(repo[nodesrc], (repo[nodenew],))])
             for book in oldbookmarks:
                 repo._bookmarks[book] = nodenew
         else:
-            createmarkers(repo, [(repo[nodesrc], ())])
+            obsolete.createmarkers(repo, [(repo[nodesrc], ())])
             # Behave like rebase, move bookmarks to dest
             for book in oldbookmarks:
                 repo._bookmarks[book] = dest.node()
@@ -976,12 +880,8 @@
     """Return a callable update(newid) updating the current bookmark
     and bookmarks bound to oldid to newid.
     """
-    bm = bookmarks.readcurrent(repo)
     def updatebookmarks(newid):
         dirty = False
-        if bm:
-            repo._bookmarks[bm] = newid
-            dirty = True
         oldbookmarks = repo.nodebookmarks(oldid)
         if oldbookmarks:
             for b in oldbookmarks:
@@ -991,6 +891,24 @@
             repo._bookmarks.write()
     return updatebookmarks
 
+### bookmarks api compatibility layer ###
+def bmdeactivate(repo):
+    try:
+        return bookmarks.deactivate(repo)
+    except AttributeError:
+        return bookmarks.unsetcurrent(repo)
+def bmactivate(repo, book):
+    try:
+        return bookmarks.activate(repo, book)
+    except AttributeError:
+        return bookmarks.setcurrent(repo, book)
+
+def bmactive(repo):
+    try:
+        return repo._activebookmark
+    except AttributeError:
+        return repo._bookmarkcurrent
+
 ### new command
 #############################
 metadataopts = [
@@ -1004,7 +922,7 @@
 def _installimportobsolete(ui):
     entry = cmdutil.findcmd('import', commands.table)[1]
     entry[1].append(('', 'obsolete', False,
-                    _('mark the old node as obsoleted by'
+                    _('mark the old node as obsoleted by '
                       'the created commit')))
 
 @eh.wrapfunction(mercurial.cmdutil, 'tryimportone')
@@ -1093,11 +1011,10 @@
                 rev = nm.get(mark[0])
                 if rev is not None:
                     ctx = unfi[rev]
-                    meta = obsolete.decodemeta(mark[3])
-                    for i, p in enumerate(ctx.parents(), 1):
-                        meta['p%i' % i] = p.hex()
+                    parents = tuple(p.node() for p in ctx.parents())
                     before = len(store._all)
-                    store.create(tr, mark[0], mark[1], mark[2], metadata=meta)
+                    store.create(tr, mark[0], mark[1], mark[2], marks[3],
+                                 parents=parents)
                     if len(store._all) - before:
                         ui.write('created new markers for %i\n' % rev)
             ui.progress(pgop, idx, total=pgtotal)
@@ -1116,7 +1033,6 @@
     sucscount = [0, 0 , 0, 0]
     known = 0
     parentsdata = 0
-    metatotallenght = 0
     metakeys = {}
     # node -> cluster mapping
     #   a cluster is a (set(nodes), set(markers)) tuple
@@ -1128,11 +1044,11 @@
             known += 1
         nbsucs = len(mark[1])
         sucscount[min(nbsucs, 3)] += 1
-        metatotallenght += len(mark[3])
-        meta = obsolete.decodemeta(mark[3])
-        for key in meta:
+        meta = mark[3]
+        for key, value in meta:
             metakeys.setdefault(key, 0)
             metakeys[key] += 1
+        meta = dict(meta)
         parents = [meta.get('p1'), meta.get('p2')]
         parents = [node.bin(p) for p in parents if p is not None]
         if parents:
@@ -1193,8 +1109,6 @@
     ui.write('              2 successors: %9i\n' % sucscount[2])
     ui.write('    more than 2 successors: %9i\n' % sucscount[3])
     # meta data info
-    ui.write('average meta length:        %9i\n'
-             % (metatotallenght/len(store._all)))
     ui.write('    available  keys:\n')
     for key in sorted(metakeys):
         ui.write('    %15s:        %9i\n' % (key, metakeys[key]))
@@ -1241,7 +1155,7 @@
     ] + mergetoolopts,
     _('[OPTIONS]...'))
 def evolve(ui, repo, **opts):
-    """Solve trouble in your repository
+    """solve trouble in your repository
 
     - rebase unstable changesets to make them stable again,
     - create proper diffs from bumped changesets,
@@ -1314,7 +1228,6 @@
                     displayer.show(ctx)
 
                 if dryrunopt:
-                    print 'hg update %s' % ctx.rev()
                     return 0
                 else:
                     res = hg.update(repo, ctx.rev())
@@ -1376,8 +1289,6 @@
     elif 'bumped' in troubles:
         return _solvebumped(ui, repo, tro, dryrunopt, confirmopt, progresscb)
     elif 'divergent' in troubles:
-        repo = repo.unfiltered()
-        tro = repo[tro.rev()]
         return _solvedivergent(ui, repo, tro, dryrunopt, confirmopt,
                                progresscb)
     else:
@@ -1426,9 +1337,12 @@
 
     # Look for an unstable which can be stabilized as a child of
     # node. The unstable must be a child of one of node predecessors.
+    directdesc = set([pctx.rev()])
     for ctx in selfanddescendants(repo, pctx):
         for child in ctx.children():
-            if child.unstable():
+            if ctx.rev() in directdesc and not child.obsolete():
+                directdesc.add(child.rev())
+            elif child.unstable():
                 return child
     return None
 
@@ -1437,15 +1351,14 @@
     """Stabilize a unstable changeset"""
     obs = orig.parents()[0]
     if not obs.obsolete():
-        print obs.rev(), orig.parents()
-        print orig.rev()
-        obs = orig.parents()[1]
+        obs = orig.parents()[1] # second parent is obsolete ?
     assert obs.obsolete()
     newer = obsolete.successorssets(repo, obs.node())
     # search of a parent which is not killed
     while not newer or newer == [()]:
         ui.debug("stabilize target %s is plain dead,"
-                 " trying to stabilize on its parent")
+                 " trying to stabilize on its parent\n" %
+                 obs)
         obs = obs.parents()[0]
         newer = obsolete.successorssets(repo, obs.node())
     if len(newer) > 1:
@@ -1463,7 +1376,7 @@
         displayer.show(orig)
         repo.ui.write(_('atop:'))
         displayer.show(target)
-    if confirm and ui.prompt('perform evolve? [Ny]') != 'y':
+    if confirm and ui.prompt('perform evolve? [Ny]', 'n') != 'y':
             raise util.Abort(_('evolve aborted by user'))
     if progresscb: progresscb()
     todo = 'hg rebase -r %s -d %s\n' % (orig, target)
@@ -1472,13 +1385,15 @@
     else:
         repo.ui.note(todo)
         if progresscb: progresscb()
+        keepbranch = orig.p1().branch() != orig.branch()
         try:
-            relocate(repo, orig, target)
+            relocate(repo, orig, target, keepbranch)
         except MergeFailure:
             repo.opener.write('graftstate', orig.hex() + '\n')
             repo.ui.write_err(_('evolve failed!\n'))
             repo.ui.write_err(
-                _('fix conflict and run "hg evolve --continue"\n'))
+                _('fix conflict and run "hg evolve --continue"'
+                  ' or use "hg update -C" to abort\n'))
             raise
 
 def _solvebumped(ui, repo, bumped, dryrun=False, confirm=False,
@@ -1500,7 +1415,7 @@
         displayer.show(bumped)
         repo.ui.write(_('atop:'))
         displayer.show(prec)
-    if confirm and ui.prompt('perform evolve? [Ny]') != 'y':
+    if confirm and ui.prompt('perform evolve? [Ny]', 'n') != 'y':
         raise util.Abort(_('evolve aborted by user'))
     if dryrun:
         todo = 'hg rebase --rev %s --dest %s;\n' % (bumped, prec.p1())
@@ -1524,7 +1439,7 @@
                 tmpid = relocate(repo, bumped, prec.p1())
                 if tmpid is not None:
                     tmpctx = repo[tmpid]
-                    createmarkers(repo, [(bumped, (tmpctx,))])
+                    obsolete.createmarkers(repo, [(bumped, (tmpctx,))])
             except MergeFailure:
                 repo.opener.write('graftstate', bumped.hex() + '\n')
                 repo.ui.write_err(_('evolution failed!\n'))
@@ -1536,8 +1451,11 @@
         files = set()
         copied = copies.pathcopies(prec, bumped)
         precmanifest = prec.manifest()
-        for key, val in bumped.manifest().iteritems():
-            if precmanifest.pop(key, None) != val:
+        for key, val in list(bumped.manifest().iteritems()):
+            precvalue = precmanifest.get(key, None)
+            if precvalue is not None:
+                del precmanifest[key]
+            if precvalue != val:
                 files.add(key)
         files.update(precmanifest)  # add missing files
         # commit it
@@ -1551,7 +1469,7 @@
                                       isexec='x' in flags,
                                       copied=copied.get(path))
                     return mctx
-                raise IOError()
+                return None
             text = 'bumped update to %s:\n\n' % prec
             text += bumped.description()
 
@@ -1566,11 +1484,11 @@
 
             newid = repo.commitctx(new)
         if newid is None:
-            createmarkers(repo, [(tmpctx, ())])
+            obsolete.createmarkers(repo, [(tmpctx, ())])
             newid = prec.node()
         else:
-            retractboundary(repo, tr, bumped.phase(), [newid])
-            createmarkers(repo, [(tmpctx, (repo[newid],))],
+            phases.retractboundary(repo, tr, bumped.phase(), [newid])
+            obsolete.createmarkers(repo, [(tmpctx, (repo[newid],))],
                                    flag=obsolete.bumpedfix)
         bmupdate(newid)
         tr.close()
@@ -1578,7 +1496,9 @@
     finally:
         tr.release()
     # reroute the working copy parent to the new changeset
+    repo.dirstate.beginparentchange()
     repo.dirstate.setparents(newid, node.nullid)
+    repo.dirstate.endparentchange()
 
 def _solvedivergent(ui, repo, divergent, dryrun=False, confirm=False,
                     progresscb=None):
@@ -1608,13 +1528,13 @@
                          "| `hg prune` to kill older version.")
     if other.p1() not in divergent.parents():
         raise util.Abort("parents are not common (not handled yet)",
-                    hint="| %(d)s, %(o)s are not based on the same changeset."
-                         "| With the current state of its implementation, "
+                    hint="| %(d)s, %(o)s are not based on the same changeset.\n"
+                         "| With the current state of its implementation, \n"
                          "| evolve does not work in that case.\n"
-                         "| rebase one of them next to the other and run "
+                         "| rebase one of them next to the other and run \n"
                          "| this command again.\n"
-                         "| - either: hg rebase -dest 'p1(%(d)s)' -r %(o)s"
-                         "| - or:     hg rebase -dest 'p1(%(d)s)' -r %(o)s"
+                         "| - either: hg rebase --dest 'p1(%(d)s)' -r %(o)s\n"
+                         "| - or:     hg rebase --dest 'p1(%(o)s)' -r %(d)s"
                               % {'d': divergent, 'o': other})
 
     displayer = cmdutil.show_changeset(ui, repo, {'template': shorttemplate})
@@ -1625,7 +1545,7 @@
         displayer.show(other)
         ui.write(_('base: '))
         displayer.show(base)
-    if confirm and ui.prompt('perform evolve? [Ny]') != 'y':
+    if confirm and ui.prompt('perform evolve? [Ny]', 'n') != 'y':
         raise util.Abort(_('evolve aborted by user'))
     if dryrun:
         ui.write('hg update -c %s &&\n' % divergent)
@@ -1666,7 +1586,9 @@
     if progresscb: progresscb()
     tr = repo.transaction('stabilize-divergent')
     try:
+        repo.dirstate.beginparentchange()
         repo.dirstate.setparents(divergent.node(), node.nullid)
+        repo.dirstate.endparentchange()
         oldlen = len(repo)
         amend(ui, repo, message='', logfile='')
         if oldlen == len(repo):
@@ -1674,8 +1596,8 @@
             # no changes
         else:
             new = repo['.']
-        createmarkers(repo, [(other, (new,))])
-        retractboundary(repo, tr, other.phase(), [new.node()])
+        obsolete.createmarkers(repo, [(other, (new,))])
+        phases.retractboundary(repo, tr, other.phase(), [new.node()])
         tr.close()
     finally:
         tr.release()
@@ -1687,13 +1609,14 @@
 
     XXX this woobly function won't survive XXX
     """
-    for base in ctx._repo.set('reverse(precursors(%d))', ctx):
+    repo = ctx._repo.unfiltered()
+    for base in repo.set('reverse(allprecursors(%d))', ctx):
         newer = obsolete.successorssets(ctx._repo, base.node())
         # drop filter and solution including the original ctx
         newer = [n for n in newer if n and ctx.node() not in n]
         if newer:
             return base, tuple(ctx._repo[o] for o in newer[0])
-    raise util.Abort('base of divergent changeset not found',
+    raise util.Abort("base of divergent changeset %s not found" % ctx,
                      hint='this case is not yet handled')
 
 
@@ -1701,9 +1624,10 @@
 shorttemplate = '[{rev}] {desc|firstline}\n'
 
 @command('^previous',
-         [],
-         '')
-def cmdprevious(ui, repo):
+         [('B', 'move-bookmark', False,
+             _('Move active bookmark after update'))],
+         '[-B]')
+def cmdprevious(ui, repo, **opts):
     """update to parent and display summary lines"""
     wkctx = repo[None]
     wparents = wkctx.parents()
@@ -1714,12 +1638,15 @@
     displayer = cmdutil.show_changeset(ui, repo, {'template': shorttemplate})
     if len(parents) == 1:
         p = parents[0]
-        bm = bookmarks.readcurrent(repo)
-        shouldmove = bm is not None and bookmarks.iscurrent(repo, bm)
+        bm = bmactive(repo)
+        shouldmove = opts.get('move_bookmark') and bm is not None
         ret = hg.update(repo, p.rev())
-        if not ret and shouldmove:
-            repo._bookmarks[bm] = p.node()
-            repo._bookmarks.write()
+        if not ret:
+            if shouldmove:
+                repo._bookmarks[bm] = p.node()
+                repo._bookmarks.write()
+            else:
+                bmdeactivate(repo)
         displayer.show(p)
         return 0
     else:
@@ -1729,9 +1656,10 @@
         return 1
 
 @command('^next',
-         [],
-         '')
-def cmdnext(ui, repo):
+         [('B', 'move-bookmark', False,
+             _('Move active bookmark after update'))],
+         '[-B]')
+def cmdnext(ui, repo, **opts):
     """update to child and display summary lines"""
     wkctx = repo[None]
     wparents = wkctx.parents()
@@ -1745,12 +1673,15 @@
         return 1
     if len(children) == 1:
         c = children[0]
-        bm = bookmarks.readcurrent(repo)
-        shouldmove = bm is not None and bookmarks.iscurrent(repo, bm)
+        bm = bmactive(repo)
+        shouldmove = opts.get('move_bookmark') and bm is not None
         ret = hg.update(repo, c.rev())
-        if not ret and shouldmove:
-            repo._bookmarks[bm] = c.node()
-            repo._bookmarks.write()
+        if not ret:
+            if shouldmove:
+                repo._bookmarks[bm] = c.node()
+                repo._bookmarks.write()
+            else:
+                bmdeactivate(repo)
         displayer.show(c)
         return 0
     else:
@@ -1782,8 +1713,10 @@
                            "ancestors(bookmark() and not bookmark(%s)) - "
                            "obsolete()",
                            mark, mark, mark)
+        revs = set(revs)
         revs.update(set(rsrevs))
-    return marks,revs
+        revs = sorted(revs)
+    return marks, revs
 
 def _deletebookmark(ui, marks, mark):
     del marks[mark]
@@ -1831,7 +1764,7 @@
     a future release (with the functionality absorbed automatically).
 
     """
-    revs = set(scmutil.revrange(repo, list(revs) + opts.get('rev')))
+    revs = scmutil.revrange(repo, list(revs) + opts.get('rev'))
     succs = opts['new'] + opts['succ']
     bookmark = opts.get('bookmark')
     metadata = _getmetadata(**opts)
@@ -1849,11 +1782,11 @@
     wlock = lock = None
     try:
         wlock = repo.wlock()
-        sortedrevs = lambda specs: sorted(set(scmutil.revrange(repo, specs)))
         lock = repo.lock()
         # defines pruned changesets
         precs = []
-        for p in sortedrevs(revs):
+        revs.sort()
+        for p in revs:
             cp = repo[p]
             if not cp.mutable():
                 # note: createmarkers() would have raised something anyway
@@ -1864,7 +1797,9 @@
             raise util.Abort('nothing to prune')
 
         # defines successors changesets
-        sucs = tuple(repo[n] for n in sortedrevs(succs))
+        sucs = scmutil.revrange(repo, succs)
+        sucs.sort()
+        sucs = tuple(repo[n] for n in sucs)
         if not biject and len(sucs) > 1 and len(precs) > 1:
             msg = "Can't use multiple successors for multiple precursors"
             raise util.Abort(msg)
@@ -1879,7 +1814,7 @@
             relations = [(p, (s,)) for p, s in zip(precs, sucs)]
 
         # create markers
-        createmarkers(repo, relations, metadata=metadata)
+        obsolete.createmarkers(repo, relations, metadata=metadata)
 
         # informs that changeset have been pruned
         ui.status(_('%i changesets pruned\n') % len(precs))
@@ -1897,8 +1832,20 @@
                 newnode = newnode.parents()[0]
 
         if newnode.node() != wdp.node():
+            bookactive = bmactive(repo)
+            # Active bookmark that we don't want to delete (with -B option)
+            # we deactivate and move it before the update and reactivate it
+            # after
+            movebookmark = bookactive and not bookmark
+            if movebookmark:
+                bmdeactivate(repo)
+                repo._bookmarks[bookactive] = newnode.node()
+                repo._bookmarks.write()
             commands.update(ui, repo, newnode.rev())
             ui.status(_('working directory now at %s\n') % newnode)
+            if movebookmark:
+                bmactivate(repo, bookactive)
+
         # update bookmarks
         if bookmark:
             _deletebookmark(ui, marks, bookmark)
@@ -1926,7 +1873,7 @@
     ('', 'close-branch', None,
      _('mark a branch as closed, hiding it from the branch list')),
     ('s', 'secret', None, _('use the secret phase for committing')),
-    ] + walkopts + commitopts + commitopts2 + commitopts3,
+    ] + walkopts + commitopts + commitopts2 + commitopts3 + interactiveopt,
     _('[OPTION]... [FILE]...'))
 def amend(ui, repo, *pats, **opts):
     """combine a changeset with updates and replace it with a new one
@@ -1948,8 +1895,9 @@
     """
     opts = opts.copy()
     edit = opts.pop('edit', False)
+    log = opts.get('logfile')
     opts['amend'] = True
-    if not (edit or opts['message']):
+    if not (edit or opts['message'] or log):
         opts['message'] = repo['.'].description()
     _resolveoptions(ui, opts)
     _alias, commitcmd = cmdutil.findcmd('commit', commands.table)
@@ -1992,7 +1940,7 @@
         if path in redirect:
             return filectxfn(repo, memctx, path, contentctx=target, redirect=())
         if path not in contentctx:
-            raise IOError()
+            return None
         fctx = contentctx[path]
         flags = fctx.flags()
         mctx = memfilectx(repo, fctx.path(), fctx.data(),
@@ -2101,6 +2049,9 @@
         rev = None
         if opts.get('rev'):
             rev = scmutil.revsingle(repo, opts.get('rev'))
+            ctx = repo[None]
+            if ctx.p1() == rev or ctx.p2() == rev:
+                raise util.Abort(_("cannot uncommit to parent changeset"))
 
         # Recommit the filtered changeset
         tr = repo.transaction('uncommit')
@@ -2113,10 +2064,12 @@
             raise util.Abort(_('nothing to uncommit'),
                              hint=_("use --all to uncommit all files"))
         # Move local changes on filtered changeset
-        createmarkers(repo, [(old, (repo[newid],))])
-        retractboundary(repo, tr, oldphase, [newid])
+        obsolete.createmarkers(repo, [(old, (repo[newid],))])
+        phases.retractboundary(repo, tr, oldphase, [newid])
+        repo.dirstate.beginparentchange()
         repo.dirstate.setparents(newid, node.nullid)
         _uncommitdirstate(repo, old, match)
+        repo.dirstate.endparentchange()
         updatebookmarks(newid)
         if not repo[newid].files():
             ui.warn(_("new changeset is empty\n"))
@@ -2128,8 +2081,9 @@
 @eh.wrapcommand('commit')
 def commitwrapper(orig, ui, repo, *arg, **kwargs):
     if kwargs.get('amend', False):
-        lock = None
+        wlock = lock = None
     else:
+        wlock = repo.wlock()
         lock = repo.lock()
     try:
         obsoleted = kwargs.get('obsolete', [])
@@ -2144,15 +2098,14 @@
                 oldbookmarks.extend(repo.nodebookmarks(old.node()))
                 markers.append((old, (new,)))
             if markers:
-                createmarkers(repo, markers)
+                obsolete.createmarkers(repo, markers)
             for book in oldbookmarks:
                 repo._bookmarks[book] = new.node()
             if oldbookmarks:
                 repo._bookmarks.write()
         return result
     finally:
-        if lock is not None:
-            lock.release()
+        lockmod.release(lock, wlock)
 
 @command('^touch',
     [('r', 'rev', [], 'revision to update'),
@@ -2161,7 +2114,7 @@
     # allow to choose the seed ?
     _('[-r] revs'))
 def touch(ui, repo, *revs, **opts):
-    """Create successors that are identical to their predecessors except for the changeset ID
+    """create successors that are identical to their predecessors except for the changeset ID
 
     This is used to "resurrect" changesets
     """
@@ -2176,38 +2129,37 @@
         return 1
     if not duplicate and repo.revs('public() and %ld', revs):
         raise util.Abort("can't touch public revision")
-    wlock = lock = None
+    wlock = lock = tr = None
     try:
         wlock = repo.wlock()
         lock = repo.lock()
         tr = repo.transaction('touch')
         revs.sort() # ensure parent are run first
         newmapping = {}
-        try:
-            for r in revs:
-                ctx = repo[r]
-                extra = ctx.extra().copy()
-                extra['__touch-noise__'] = random.randint(0, 0xffffffff)
-                # search for touched parent
-                p1 = ctx.p1().node()
-                p2 = ctx.p2().node()
-                p1 = newmapping.get(p1, p1)
-                p2 = newmapping.get(p2, p2)
-                new, unusedvariable = rewrite(repo, ctx, [], ctx,
-                                              [p1, p2],
-                                              commitopts={'extra': extra})
-                # store touched version to help potential children
-                newmapping[ctx.node()] = new
-                if not duplicate:
-                    createmarkers(repo, [(ctx, (repo[new],))])
-                retractboundary(repo, tr, ctx.phase(), [new])
-                if ctx in repo[None].parents():
-                    repo.dirstate.setparents(new, node.nullid)
-            tr.close()
-        finally:
-            tr.release()
+        for r in revs:
+            ctx = repo[r]
+            extra = ctx.extra().copy()
+            extra['__touch-noise__'] = random.randint(0, 0xffffffff)
+            # search for touched parent
+            p1 = ctx.p1().node()
+            p2 = ctx.p2().node()
+            p1 = newmapping.get(p1, p1)
+            p2 = newmapping.get(p2, p2)
+            new, unusedvariable = rewrite(repo, ctx, [], ctx,
+                                          [p1, p2],
+                                          commitopts={'extra': extra})
+            # store touched version to help potential children
+            newmapping[ctx.node()] = new
+            if not duplicate:
+                obsolete.createmarkers(repo, [(ctx, (repo[new],))])
+            phases.retractboundary(repo, tr, ctx.phase(), [new])
+            if ctx in repo[None].parents():
+                repo.dirstate.beginparentchange()
+                repo.dirstate.setparents(new, node.nullid)
+                repo.dirstate.endparentchange()
+        tr.close()
     finally:
-        lockmod.release(lock, wlock)
+        lockmod.release(tr, lock, wlock)
 
 @command('^fold|squash',
     [('r', 'rev', [], _("revision to fold")),
@@ -2273,14 +2225,14 @@
     if len(roots) > 1:
         raise util.Abort(_("cannot fold non-linear revisions "
                            "(multiple roots given)"))
-    root = repo[roots[0]]
+    root = repo[roots.first()]
     if root.phase() <= phases.public:
         raise util.Abort(_("cannot fold public revisions"))
     heads = repo.revs('heads(%ld)', revs)
     if len(heads) > 1:
         raise util.Abort(_("cannot fold non-linear revisions "
                            "(multiple heads given)"))
-    head = repo[heads[0]]
+    head = repo[heads.first()]
     wlock = lock = None
     try:
         wlock = repo.wlock()
@@ -2303,8 +2255,8 @@
             newid, unusedvariable = rewrite(repo, root, allctx, head,
                                             [root.p1().node(), root.p2().node()],
                                             commitopts=commitopts)
-            retractboundary(repo, tr, targetphase, [newid])
-            createmarkers(repo, [(ctx, (repo[newid],))
+            phases.retractboundary(repo, tr, targetphase, [newid])
+            obsolete.createmarkers(repo, [(ctx, (repo[newid],))
                                  for ctx in allctx])
             tr.close()
         finally:
@@ -2324,8 +2276,10 @@
     kwargs['rev'] = []
     obsoleted = kwargs.setdefault('obsolete', [])
 
-    lock = repo.lock()
+    wlock = lock = None
     try:
+        wlock = repo.wlock()
+        lock = repo.lock()
         if kwargs.get('old_obsolete'):
             if kwargs.get('continue'):
                 obsoleted.extend(repo.opener.read('graftstate').splitlines())
@@ -2340,15 +2294,10 @@
 
         return commitwrapper(orig, ui, repo,*revs, **kwargs)
     finally:
-        lock.release()
+        lockmod.release(lock, wlock)
 
 @eh.extsetup
 def oldevolveextsetup(ui):
-    try:
-        rebase = extensions.find('rebase')
-    except KeyError:
-        raise error.Abort(_('evolution extension requires rebase extension.'))
-
     for cmd in ['kill', 'uncommit', 'touch', 'fold']:
         entry = extensions.wrapcommand(cmdtable, cmd,
                                        warnobserrors)
@@ -2380,37 +2329,176 @@
         topic = 'OBSEXC'
     ui.progress(topic, *args, **kwargs)
 
-
+if getattr(exchange, '_pushdiscoveryobsmarkers', None) is not None:
+    @eh.wrapfunction(exchange, '_pushdiscoveryobsmarkers')
+    def _pushdiscoveryobsmarkers(orig, pushop):
+        if (obsolete._enabled
+            and pushop.repo.obsstore
+            and 'obsolete' in pushop.remote.listkeys('namespaces')):
+            repo = pushop.repo
+            obsexcmsg(repo.ui, "computing relevant nodes\n")
+            revs = list(repo.revs('::%ln', pushop.futureheads))
+            unfi = repo.unfiltered()
+            cl = unfi.changelog
+            if not pushop.remote.capable('_evoext_obshash_0'):
+                # do not trust core yet
+                # return orig(pushop)
+                nodes = [cl.node(r) for r in revs]
+                if nodes:
+                    obsexcmsg(repo.ui, "computing markers relevant to %i nodes\n"
+                                       % len(nodes))
+                    pushop.outobsmarkers = repo.obsstore.relevantmarkers(nodes)
+                else:
+                    obsexcmsg(repo.ui, "markers already in sync\n")
+                    pushop.outobsmarkers = []
+                    pushop.outobsmarkers = repo.obsstore.relevantmarkers(nodes)
+                return
+
+            common = []
+            obsexcmsg(repo.ui, "looking for common markers in %i nodes\n"
+                               % len(revs))
+            commonrevs = list(unfi.revs('::%ln', pushop.outgoing.commonheads))
+            common = findcommonobsmarkers(pushop.ui, unfi, pushop.remote, commonrevs)
+
+            revs = list(unfi.revs('%ld - (::%ln)', revs, common))
+            nodes = [cl.node(r) for r in revs]
+            if nodes:
+                obsexcmsg(repo.ui, "computing markers relevant to %i nodes\n"
+                                   % len(nodes))
+                pushop.outobsmarkers = repo.obsstore.relevantmarkers(nodes)
+            else:
+                obsexcmsg(repo.ui, "markers already in sync\n")
+                pushop.outobsmarkers = []
+
+@eh.wrapfunction(wireproto, 'capabilities')
+def discocapabilities(orig, repo, proto):
+    """wrapper to advertise new capability"""
+    caps = orig(repo, proto)
+    if obsolete._enabled:
+        caps += ' _evoext_obshash_0'
+    return caps
+
+@eh.extsetup
+def _installobsmarkersdiscovery(ui):
+    hgweb_mod.perms['evoext_obshash'] = 'pull'
+    hgweb_mod.perms['evoext_obshash1'] = 'pull'
+    # wrap command content
+    oldcap, args = wireproto.commands['capabilities']
+    def newcap(repo, proto):
+        return discocapabilities(oldcap, repo, proto)
+    wireproto.commands['capabilities'] = (newcap, args)
+    wireproto.commands['evoext_obshash'] = (srv_obshash, 'nodes')
+    wireproto.commands['evoext_obshash1'] = (srv_obshash1, 'nodes')
+    if getattr(exchange, '_pushdiscoveryobsmarkers', None) is None:
+        ui.warn('evolve: your mercurial version is too old\n'
+                'evolve: (running in degraded mode, push will includes all markers)\n')
+    else:
+        olddisco = exchange.pushdiscoverymapping['obsmarker']
+        def newdisco(pushop):
+            _pushdiscoveryobsmarkers(olddisco, pushop)
+        exchange.pushdiscoverymapping['obsmarker'] = newdisco
+
+### Set discovery START
+
+from mercurial import dagutil
+from mercurial import setdiscovery
+
+def _obshash(repo, nodes, version=0):
+    if version == 0:
+        hashs = _obsrelsethashtreefm0(repo)
+    elif version ==1:
+        hashs = _obsrelsethashtreefm1(repo)
+    else:
+        assert False
+    nm = repo.changelog.nodemap
+    revs = [nm.get(n) for n in nodes]
+    return [r is None and nullid or hashs[r][1] for r in revs]
+
+def srv_obshash(repo, proto, nodes):
+    return wireproto.encodelist(_obshash(repo, wireproto.decodelist(nodes)))
+
+def srv_obshash1(repo, proto, nodes):
+    return wireproto.encodelist(_obshash(repo, wireproto.decodelist(nodes), version=1))
+
+@eh.addattr(localrepo.localpeer, 'evoext_obshash')
+def local_obshash(peer, nodes):
+    return _obshash(peer._repo, nodes)
+
+@eh.addattr(localrepo.localpeer, 'evoext_obshash1')
+def local_obshash1(peer, nodes):
+    return _obshash(peer._repo, nodes, version=1)
+
+@eh.addattr(wireproto.wirepeer, 'evoext_obshash')
+def peer_obshash(self, nodes):
+    d = self._call("evoext_obshash", nodes=wireproto.encodelist(nodes))
+    try:
+        return wireproto.decodelist(d)
+    except ValueError:
+        self._abort(error.ResponseError(_("unexpected response:"), d))
+
+@eh.addattr(wireproto.wirepeer, 'evoext_obshash1')
+def peer_obshash1(self, nodes):
+    d = self._call("evoext_obshash1", nodes=wireproto.encodelist(nodes))
+    try:
+        return wireproto.decodelist(d)
+    except ValueError:
+        self._abort(error.ResponseError(_("unexpected response:"), d))
+
+def findcommonobsmarkers(ui, local, remote, probeset,
+                         initialsamplesize=100,
+                         fullsamplesize=200):
+    # from discovery
+    roundtrips = 0
+    cl = local.changelog
+    dag = dagutil.revlogdag(cl)
+    missing = set()
+    common = set()
+    undecided = set(probeset)
+    _takefullsample = setdiscovery._takefullsample
+    if remote.capable('_evoext_obshash_1'):
+        getremotehash = remote.evoext_obshash1
+        localhash = _obsrelsethashtreefm1(local)
+    else:
+        getremotehash = remote.evoext_obshash
+        localhash = _obsrelsethashtreefm0(local)
+
+    while undecided:
+
+        ui.note(_("sampling from both directions\n"))
+        if len(undecided) < fullsamplesize:
+            sample = set(undecided)
+        else:
+            sample = _takefullsample(dag, undecided, size=fullsamplesize)
+
+        roundtrips += 1
+        ui.debug("query %i; still undecided: %i, sample size is: %i\n"
+                 % (roundtrips, len(undecided), len(sample)))
+        # indices between sample and externalized version must match
+        sample = list(sample)
+        remotehash = getremotehash(dag.externalizeall(sample))
+
+        yesno = [localhash[ix][1] == remotehash[si]
+                 for si, ix in enumerate(sample)]
+
+        commoninsample = set(n for i, n in enumerate(sample) if yesno[i])
+        common.update(dag.ancestorset(commoninsample, common))
+
+        missinginsample = [n for i, n in enumerate(sample) if not yesno[i]]
+        missing.update(dag.descendantset(missinginsample, missing))
+
+        undecided.difference_update(missing)
+        undecided.difference_update(common)
+
+
+    result = dag.headsetofconnecteds(common)
+    ui.debug("%d total queries\n" % roundtrips)
+
+    if not result:
+        return set([nullid])
+    return dag.externalizeall(result)
 
 
 _pushkeyescape = getattr(obsolete, '_pushkeyescape', None)
-if _pushkeyescape is None:
-    _maxpayload = 5300
-    def _pushkeyescape(markers):
-        """encode markers into a dict suitable for pushkey exchange
-
-        - binary data are base86 encoded
-        - splited in chunk less than 5300 bytes"""
-        parts = []
-        currentlen = _maxpayload * 2  # ensure we create a new part
-        for marker in markers:
-            nextdata = obsolete._encodeonemarker(marker)
-            if (len(nextdata) + currentlen > _maxpayload):
-                currentpart = []
-                currentlen = 0
-                parts.append(currentpart)
-            currentpart.append(nextdata)
-            currentlen += len(nextdata)
-        keys = {}
-        for idx, part in enumerate(reversed(parts)):
-            data = ''.join([_pack('>B', 0)] + part)
-            keys['dump%i' % idx] = base85.b85encode(data)
-        return keys
-
-def _encodemarkersstream(fp, markers):
-    fp.write(_pack('>B', 0))
-    for mark in markers:
-        fp.write(obsolete._encodeonemarker(mark))
 
 class pushobsmarkerStringIO(StringIO):
     """hacky string io for progress"""
@@ -2419,7 +2507,7 @@
     def length(self):
         return len(self.getvalue())
 
-    def read(self, size):
+    def read(self, size=None):
         obsexcprg(self.ui, self.tell(), unit="bytes", total=self.length)
         return StringIO.read(self, size)
 
@@ -2429,137 +2517,6 @@
             yield d
             d = self.read(4096)
 
-bundle2partsgenerators = getattr(exchange, 'bundle2partsgenerators', None)
-
-
-if bundle2partsgenerators is not None:
-
-    def _pushb2phases(pushop, bundler):
-        """adds phases update to the main bundle2 push"""
-        outgoing = pushop.outgoing
-        unfi = pushop.repo.unfiltered()
-        remotephases = pushop.remote.listkeys('phases')
-        publishing = remotephases.get('publishing', False)
-        ana = phases.analyzeremotephases(pushop.repo,
-                                         outgoing.commonheads,
-                                         remotephases)
-        pheads, droots = ana
-        revset = 'heads((%ln::%ln))'
-        if not publishing:
-            revset += ' and public()'
-        # Get the list of all revs draft on remote by public here.
-        # XXX Beware that revset break if droots is not strictly
-        # XXX root we may want to ensure it is but it is costly
-        fallback = list(unfi.set(revset, droots, outgoing.commonheads))
-        if not outgoing.missing:
-            future = fallback
-        else:
-            # adds changeset we are going to push as draft
-            #
-            # should not be necessary for pushblishing server, but because of
-            # an issue fixed in xxxxx we have to do it anyway.
-            fdroots = list(unfi.set('roots(%ln  + %ln::)', outgoing.missing, droots))
-            fdroots = [f.node() for f in fdroots]
-            future = list(unfi.set(revset, fdroots, outgoing.missingheads))
-
-        b2caps = bundle2.bundle2caps(pushop.remote)
-        if 'b2x:pushkey' not in b2caps:
-            return
-        pushop.stepsdone.add('phases')
-        part2node = []
-        enc = pushkey.encode
-        for newremotehead in future:
-            part = bundler.newpart('b2x:pushkey')
-            part.addparam('namespace', enc('phases'))
-            part.addparam('key', enc(newremotehead.hex()))
-            part.addparam('old', enc(str(phases.draft)))
-            part.addparam('new', enc(str(phases.public)))
-            part2node.append((part.id, newremotehead))
-        def handlereply(op):
-            for partid, pnode in part2node:
-                partrep = op.records.getreplies(partid)
-                results = partrep['pushkey']
-                assert len(results) <= 1
-                msg = None
-                if not results:
-                    msg = _('server ignored update of %s to public!\n') % pnode
-                elif not int(results[0]['return']):
-                    msg = _('updating %s to public failed!\n') % pnode
-                if msg is not None:
-                    pushop.ui.warn(msg)
-        return handlereply
-
-    def _pushb2obsmarker(pushop, bundler):
-        """adds obsmarker to the main bundle2 push"""
-        repo = pushop.repo
-        remote = pushop.remote
-        if ('obsmarkers' not in pushop.stepsdone
-            and (obsolete._enabled and repo.obsstore and
-                 'obsolete' in remote.listkeys('namespaces'))
-            and remote.capable('_evoext_b2x_obsmarkers_0')):
-            #
-            pushop.stepsdone.add('obsmarkers')
-            markers = _obsmarkersdiscovery(pushop)
-            if not markers:
-                obsexcmsg(repo.ui, "no marker to push\n")
-                obsexcmsg(repo.ui, "DONE\n")
-                return
-            obsdata = pushobsmarkerStringIO()
-            _encodemarkersstream(obsdata, markers)
-            obsdata.seek(0)
-            obsdata.ui = repo.ui
-            obsexcmsg(repo.ui, "pushing %i obsolescence markers (%i bytes)\n"
-                               % (len(markers), len(obsdata.getvalue())),
-                      True)
-            bundler.newpart('EVOLVE:B2X:OBSMARKERV1', data=obsdata)
-            def callback(op):
-                obsexcprg(repo.ui, None)
-                obsexcmsg(repo.ui, "DONE\n")
-            return callback
-    bundle2partsgenerators.append(_pushb2phases)
-    bundle2partsgenerators.append(_pushb2obsmarker)
-
-
-def _obsmarkersdiscovery(pushop):
-    """return the list of marker that needs to be pushed to the server
-
-    When used before (or at the same time) the changegroup have been pushed, it
-    returns the value as if the planned changegroup was succesful. Othewise it
-    use te actual common heads to decide whats needs to be pushed.
-    """
-    repo = pushop.repo
-    remote = pushop.remote
-    unfi = repo.unfiltered()
-    cl = unfi.changelog
-    commonheads = pushop.commonheads
-    if commonheads is None:
-        if pushop.revs is None:
-            commonheads = pushop.outgoing.commonheads
-            sch = set(commonheads)
-            commonheads.extend(h for h in pushop.outgoing.missingheads
-                               if h not in sch)
-        else:
-            commonheads = pushop.outgoing.missingheads
-    if (obsolete._enabled and repo.obsstore and
-        'obsolete' in remote.listkeys('namespaces')):
-        obsexcmsg(repo.ui, "computing relevant nodes\n")
-        revs = unfi.revs('::%ln', commonheads)
-        common = []
-        if remote.capable('_evoext_obshash_0'):
-            obsexcmsg(repo.ui, "looking for common markers in %i nodes\n"
-                               % len(revs))
-            common = findcommonobsmarkers(pushop.ui, unfi, remote, revs)
-            revs = list(unfi.revs('%ld - (::%ln)', revs, common))
-        nodes = [cl.node(r) for r in revs]
-        if nodes:
-            obsexcmsg(repo.ui, "computing markers relevant to %i nodes\n"
-                               % len(nodes))
-            markers = repo.obsstore.relevantmarkers(nodes)
-        else:
-            obsexcmsg(repo.ui, "markers already in sync\n")
-            markers = []
-        return markers
-
 @eh.wrapfunction(exchange, '_pushobsolete')
 def _pushobsolete(orig, pushop):
     """utility function to push obsolete markers to a remote"""
@@ -2568,42 +2525,24 @@
         if 'obsmarkers' in stepsdone:
             return
         stepsdone.add('obsmarkers')
+    if util.safehasattr(pushop, 'cgresult'):
+        cgresult = pushop.cgresult
+    else:
+        cgresult = pushop.ret
+    if cgresult == 0:
+        return
     pushop.ui.debug('try to push obsolete markers to remote\n')
     repo = pushop.repo
     remote = pushop.remote
-    unfi = repo.unfiltered()
-    cl = unfi.changelog
-    if (obsolete._enabled and repo.obsstore and
+    if (obsolete._enabled  and repo.obsstore and
         'obsolete' in remote.listkeys('namespaces')):
-        markers = _obsmarkersdiscovery(pushop)
+        markers = pushop.outobsmarkers
         if not markers:
             obsexcmsg(repo.ui, "no marker to push\n")
-        elif remote.capable('_evoext_b2x_obsmarkers_0'):
-            obsdata = pushobsmarkerStringIO()
-            _encodemarkersstream(obsdata, markers)
-            obsdata.seek(0)
-            obsdata.ui = repo.ui
-            obsexcmsg(repo.ui, "pushing %i obsolescence markers (%i bytes)\n"
-                               % (len(markers), len(obsdata.getvalue())),
-                      True)
-            bundler = bundle2.bundle20(pushop.ui, {})
-            capsblob = bundle2.encodecaps(pushop.repo.bundle2caps)
-            bundler.addpart(bundle2.bundlepart('b2x:replycaps', data=capsblob))
-            cgpart = bundle2.bundlepart('EVOLVE:B2X:OBSMARKERV1', data=obsdata)
-            bundler.addpart(cgpart)
-            stream = util.chunkbuffer(bundler.getchunks())
-            try:
-                reply = pushop.remote.unbundle(stream, ['force'], 'push')
-            except bundle2.UnknownPartError, exc:
-                raise util.Abort('missing support for %s' % exc)
-            try:
-                op = bundle2.processbundle(pushop.repo, reply)
-            except bundle2.UnknownPartError, exc:
-                raise util.Abort('missing support for %s' % exc)
-            obsexcprg(repo.ui, None)
         elif remote.capable('_evoext_pushobsmarkers_0'):
             obsdata = pushobsmarkerStringIO()
-            _encodemarkersstream(obsdata, markers)
+            for chunk in obsolete.encodemarkers(markers, True):
+                obsdata.write(chunk)
             obsdata.seek(0)
             obsdata.ui = repo.ui
             obsexcmsg(repo.ui, "pushing %i obsolescence markers (%i bytes)\n"
@@ -2649,12 +2588,41 @@
     (Cannot simply use _callpush as http is doing some special handling)"""
     self.requirecap('_evoext_pushobsmarkers_0',
                     _('push obsolete markers faster'))
-    ret, output = self._call('evoext_pushobsmarkers_0', data=obsfile)
-    for l in output.splitlines(True):
-        if l.strip():
-            self.ui.status(_('remote: '), l)
-    return ret
-
+    try:
+        r = self._call('evoext_pushobsmarkers_0', data=obsfile)
+        vals = r.split('\n', 1)
+        if len(vals) < 2:
+            raise error.ResponseError(_("unexpected response:"), r)
+
+        for l in vals[1].splitlines(True):
+            if l.strip():
+                self.ui.status(_('remote: '), l)
+        return vals[0]
+    except socket.error, err:
+        if err.args[0] in (errno.ECONNRESET, errno.EPIPE):
+            raise util.Abort(_('push failed: %s') % err.args[1])
+        raise util.Abort(err.args[1])
+
+@eh.wrapfunction(localrepo.localrepository, '_restrictcapabilities')
+def local_pushobsmarker_capabilities(orig, repo, caps):
+    caps = orig(repo, caps)
+    caps.add('_evoext_pushobsmarkers_0')
+    return caps
+
+@eh.addattr(localrepo.localpeer, 'evoext_pushobsmarkers_0')
+def local_pushobsmarkers(peer, obsfile):
+    data = obsfile.read()
+    tr = lock = None
+    try:
+        lock = peer._repo.lock()
+        tr = peer._repo.transaction('pushkey: obsolete markers')
+        new = peer._repo.obsstore.mergemarkers(tr, data)
+        if new is not None:
+            obsexcmsg(peer._repo.ui, "%i obsolescence markers added\n" % new, True)
+        tr.close()
+    finally:
+        lockmod.release(tr, lock)
+    peer._repo.hook('evolve_pushobsmarkers')
 
 def srv_pushobsmarkers(repo, proto):
     """wireprotocol command"""
@@ -2663,56 +2631,28 @@
     proto.getfile(fp)
     data = fp.getvalue()
     fp.close()
-    lock = repo.lock()
+    tr = lock = None
     try:
+        lock = repo.lock()
         tr = repo.transaction('pushkey: obsolete markers')
-        try:
-            repo.obsstore.mergemarkers(tr, data)
-            tr.close()
-        finally:
-            tr.release()
+        new = repo.obsstore.mergemarkers(tr, data)
+        if new is not None:
+            obsexcmsg(repo.ui, "%i obsolescence markers added\n" % new, True)
+        tr.close()
     finally:
-        lock.release()
+        lockmod.release(tr, lock)
     repo.hook('evolve_pushobsmarkers')
     return wireproto.pushres(0)
 
-@bundle2.parthandler('evolve:b2x:obsmarkerv1')
-def handleobsmarkerv1(op, inpart):
-    """add a stream of obsmarker to the repo"""
-    tr = op.gettransaction()
-    advparams = dict(inpart.advisoryparams)
-    length = advparams.get('totalbytes')
-    if length is None:
-        obsdata = inpart.read()
-    else:
-        length = int(length)
-        data = StringIO()
-        current = 0
-        obsexcprg(op.repo.ui, current, unit="bytes", total=length)
-        while current < length:
-            readsize = min(length-current, 4096)
-            data.write(inpart.read(readsize))
-            current += readsize
-            obsexcprg(op.repo.ui, current, unit="bytes", total=length)
-        obsexcprg(op.repo.ui, None)
-        obsdata = data.getvalue()
-    totalsize = len(obsdata)
-    old = len(op.repo.obsstore._all)
-    op.repo.obsstore.mergemarkers(tr, obsdata)
-    new = len(op.repo.obsstore._all) - old
-    op.records.add('evo_obsmarkers', {'new': new, 'bytes': totalsize})
-    tr.hookargs['evolve_new_obsmarkers'] = str(new)
-
-def _buildpullobsmerkersboundaries(pullop):
+def _buildpullobsmarkersboundaries(pullop):
     """small funtion returning the argument for pull markers call
     may to contains 'heads' and 'common'. skip the key for None.
 
     Its a separed functio to play around with strategy for that."""
     repo = pullop.repo
-    cl = pullop.repo.changelog
     remote = pullop.remote
     unfi = repo.unfiltered()
-    revs = unfi.revs('::%ln', pullop.pulledsubset)
+    revs = unfi.revs('::(%ln - null)', pullop.common)
     common = [nullid]
     if remote.capable('_evoext_obshash_0'):
         obsexcmsg(repo.ui, "looking for common markers in %i nodes\n"
@@ -2722,46 +2662,59 @@
 
 @eh.uisetup
 def addgetbundleargs(self):
-    if gboptsmap is not None:
-        gboptsmap['evo_obsmarker'] = 'plain'
-        gboptsmap['evo_obscommon'] = 'plain'
-        gboptsmap['evo_obsheads'] = 'plain'
-    else:
-        gboptslist.append('evo_obsheads')
-        gboptslist.append('evo_obscommon')
-        gboptslist.append('evo_obsmarker')
-
-
-
-@eh.wrapfunction(exchange, '_getbundleextrapart')
-def _getbundleextrapart(orig, bundler, repo, source, **kwargs):
-    if int(kwargs.pop('evo_obsmarker', False)):
-        common = kwargs.pop('evo_obscommon')
-        common = wireproto.decodelist(common)
-        heads = kwargs.pop('evo_obsheads')
-        heads = wireproto.decodelist(heads)
-        obsdata = _getobsmarkersstream(repo, common=common, heads=heads)
-        if len(obsdata.getvalue()) > 5:
-            advparams = [('totalbytes', str(len(obsdata.getvalue())))]
-            obspart = bundle2.bundlepart('EVOLVE:B2X:OBSMARKERV1',
-                                         advisoryparams=advparams,
-                                         data=obsdata)
-            bundler.addpart(obspart)
-    orig(bundler, repo, source)
+    gboptsmap['evo_obscommon'] = 'nodes'
+
+@eh.wrapfunction(exchange, '_pullbundle2extraprepare')
+def _addobscommontob2pull(orig, pullop, kwargs):
+    ret = orig(pullop, kwargs)
+    if 'obsmarkers' in kwargs and pullop.remote.capable('_evoext_getbundle_obscommon'):
+        boundaries = _buildpullobsmarkersboundaries(pullop)
+        common = boundaries['common']
+        if common != [nullid]:
+            kwargs['evo_obscommon'] = common
+    return ret
+
+if getattr(exchange, '_getbundleobsmarkerpart', None) is not None:
+    @eh.wrapfunction(exchange, '_getbundleobsmarkerpart')
+    def _getbundleobsmarkerpart(orig, bundler, repo, source, **kwargs):
+        if 'evo_obscommon' not in kwargs:
+            return orig(bundler, repo, source, **kwargs)
+
+        heads = kwargs.get('heads')
+        if kwargs.get('obsmarkers', False):
+            if heads is None:
+                heads = repo.heads()
+            obscommon = kwargs.get('evo_obscommon', ())
+            assert obscommon
+            obsset = repo.unfiltered().set('::%ln - ::%ln', heads, obscommon)
+            subset = [c.node() for c in obsset]
+            markers = repo.obsstore.relevantmarkers(subset)
+            exchange.buildobsmarkerspart(bundler, markers)
+
+    @eh.uisetup
+    def installgetbundlepartgen(ui):
+        origfunc = exchange.getbundle2partsmapping['obsmarkers']
+        def newfunc(*args, **kwargs):
+            return _getbundleobsmarkerpart(origfunc, *args, **kwargs)
+        exchange.getbundle2partsmapping['obsmarkers'] = newfunc
+
 
 @eh.wrapfunction(exchange, '_pullobsolete')
 def _pullobsolete(orig, pullop):
     if not obsolete._enabled:
         return None
-    b2xpull = pullop.remote.capable('_evoext_b2x_obsmarkers_0')
+    if 'obsmarkers' not in getattr(pullop, 'todosteps', ['obsmarkers']):
+        return None
+    if 'obsmarkers' in getattr(pullop, 'stepsdone', []):
+        return None
     wirepull = pullop.remote.capable('_evoext_pullobsmarkers_0')
-    if not (b2xpull or wirepull):
+    if not wirepull:
         return orig(pullop)
     if 'obsolete' not in pullop.remote.listkeys('namespaces'):
         return None # remote opted out of obsolescence marker exchange
     tr = None
     ui = pullop.repo.ui
-    boundaries = _buildpullobsmerkersboundaries(pullop)
+    boundaries = _buildpullobsmarkersboundaries(pullop)
     if not set(boundaries['heads']) - set(boundaries['common']):
         obsexcmsg(ui, "nothing to pull\n")
         return None
@@ -2769,33 +2722,7 @@
     obsexcmsg(ui, "pull obsolescence markers\n", True)
     new = 0
 
-    if b2xpull:
-        kwargs = {'bundlecaps': set(['HG2X'])}
-        capsblob = bundle2.encodecaps(pullop.repo.bundle2caps)
-        kwargs['bundlecaps'].add('bundle2=' + urllib.quote(capsblob))
-        kwargs['heads'] = [nullid]
-        kwargs['common'] = [nullid]
-        kwargs['evo_obsmarker'] = '1'
-        kwargs['evo_obscommon'] = wireproto.encodelist(boundaries['common'])
-        kwargs['evo_obsheads'] = wireproto.encodelist(boundaries['heads'])
-        bundle = pullop.remote.getbundle('pull', **kwargs)
-        try:
-            op = bundle2.processbundle(pullop.repo, bundle, pullop.gettransaction)
-        except bundle2.UnknownPartError, exc:
-            raise util.Abort('missing support for %s' % exc)
-        bytes = new = 0
-        for entry in op.records['evo_obsmarkers']:
-            bytes += entry.get('bytes', 0)
-            new += entry.get('new', 0)
-        if 5 < bytes:
-            obsexcmsg(ui, "merging obsolescence markers (%i bytes)\n"
-                      % bytes)
-            obsexcmsg(ui, "%i obsolescence markers added\n" % new, True)
-            tr = op.gettransaction()
-        else:
-            obsexcmsg(ui, "no unknown remote markers\n")
-        obsexcmsg(ui, "DONE\n")
-    elif wirepull:
+    if wirepull:
         obsdata = pullop.remote.evoext_pullobsmarkers_0(**boundaries)
         obsdata = obsdata.read()
         if len(obsdata) > 5:
@@ -2830,7 +2757,8 @@
     nodes = [c.node() for c in repo.set(revset, *args)]
     markers = repo.obsstore.relevantmarkers(nodes)
     obsdata = StringIO()
-    _encodemarkersstream(obsdata, markers)
+    for chunk in obsolete.encodemarkers(markers, True):
+        obsdata.write(chunk)
     obsdata.seek(0)
     return obsdata
 
@@ -2879,9 +2807,16 @@
     finaldata.seek(0)
     return wireproto.streamres(proto.groupchunks(finaldata))
 
-def _obsrelsethashtree(repo):
+def _obsrelsethashtreefm0(repo):
+    return _obsrelsethashtree(repo, obsolete._fm0encodeonemarker)
+
+def _obsrelsethashtreefm1(repo):
+    return _obsrelsethashtree(repo, obsolete._fm1encodeonemarker)
+
+def _obsrelsethashtree(repo, encodeonemarker):
     cache = []
     unfi = repo.unfiltered()
+    markercache = {}
     for i in unfi:
         ctx = unfi[i]
         entry = 0
@@ -2898,7 +2833,11 @@
                 sha.update(p)
         tmarkers = repo.obsstore.relevantmarkers([ctx.node()])
         if tmarkers:
-            bmarkers = [obsolete._encodeonemarker(m) for m in tmarkers]
+            bmarkers = []
+            for m in tmarkers:
+                if not m in markercache:
+                    markercache[m] = encodeonemarker(m)
+                bmarkers.append(markercache[m])
             bmarkers.sort()
             for m in bmarkers:
                 entry += 1
@@ -2910,87 +2849,72 @@
     return cache
 
 @command('debugobsrelsethashtree',
-        [] , _(''))
-def debugobsrelsethashtree(ui, repo):
+        [('', 'v0', None, 'hash on marker format "0"'),
+         ('', 'v1', None, 'hash on marker format "1" (default)')
+         ,] , _(''))
+def debugobsrelsethashtree(ui, repo, v0=False, v1=False):
     """display Obsolete markers, Relevant Set, Hash Tree
     changeset-node obsrelsethashtree-node
 
     It computed form the "orsht" of its parent and markers
     relevant to the changeset itself."""
-    for chg, obs in _obsrelsethashtree(repo):
+    if v0 and v1:
+        raise util.Abort('cannot only specify one format')
+    elif v0:
+        treefunc = _obsrelsethashtreefm0
+    else:
+        treefunc = _obsrelsethashtreefm1
+
+    for chg, obs in treefunc(repo):
         ui.status('%s %s\n' % (node.hex(chg), node.hex(obs)))
 
-
-### Set discovery START
-
-import random
-from mercurial import dagutil
-from mercurial import setdiscovery
-
-def _obshash(repo, nodes):
-    hashs = _obsrelsethashtree(repo)
-    nm = repo.changelog.nodemap
-    return  [hashs[nm.get(n)][1] for n in nodes]
-
-def srv_obshash(repo, proto, nodes):
-    return wireproto.encodelist(_obshash(repo, wireproto.decodelist(nodes)))
-
-@eh.addattr(localrepo.localpeer, 'evoext_obshash')
-def local_obshash(peer, nodes):
-    return _obshash(peer._repo, nodes)
-
-@eh.addattr(wireproto.wirepeer, 'evoext_obshash')
-def peer_obshash(self, nodes):
-    d = self._call("evoext_obshash", nodes=wireproto.encodelist(nodes))
-    try:
-        return wireproto.decodelist(d)
-    except ValueError:
-        self._abort(error.ResponseError(_("unexpected response:"), d))
-
-def findcommonobsmarkers(ui, local, remote, probeset,
-                    initialsamplesize=100,
-                    fullsamplesize=200):
-    # from discovery
-    roundtrips = 0
-    cl = local.changelog
-    dag = dagutil.revlogdag(cl)
-    localhash = _obsrelsethashtree(local)
-    missing = set()
-    common = set()
-    undecided = set(probeset)
-    _takefullsample = setdiscovery._takefullsample
-
-    while undecided:
-
-        ui.note(_("sampling from both directions\n"))
-        sample = _takefullsample(dag, undecided, size=fullsamplesize)
-
-        roundtrips += 1
-        ui.debug("query %i; still undecided: %i, sample size is: %i\n"
-                 % (roundtrips, len(undecided), len(sample)))
-        # indices between sample and externalized version must match
-        sample = list(sample)
-        remotehash = remote.evoext_obshash(dag.externalizeall(sample))
-
-        yesno = [localhash[ix][1] == remotehash[si]
-                 for si, ix in enumerate(sample)]
-
-        commoninsample = set(n for i, n in enumerate(sample) if yesno[i])
-        common.update(dag.ancestorset(commoninsample, common))
-
-        missinginsample = [n for i, n in enumerate(sample) if not yesno[i]]
-        missing.update(dag.descendantset(missinginsample, missing))
-
-        undecided.difference_update(missing)
-        undecided.difference_update(common)
-
-
-    result = dag.headsetofconnecteds(common)
-    ui.debug("%d total queries\n" % roundtrips)
-
-    if not result:
-        return set([nullid])
-    return dag.externalizeall(result)
+_bestformat = max(obsolete.formats.keys())
+
+
+if getattr(obsolete, '_checkinvalidmarkers', None) is not None:
+    @eh.wrapfunction(obsolete, '_checkinvalidmarkers')
+    def _checkinvalidmarkers(orig, markers):
+        """search for marker with invalid data and raise error if needed
+
+        Exist as a separated function to allow the evolve extension for a more
+        subtle handling.
+        """
+        if 'debugobsconvert' in sys.argv:
+            return
+        for mark in markers:
+            if node.nullid in mark[1]:
+                raise util.Abort(_('bad obsolescence marker detected: '
+                                   'invalid successors nullid'),
+                                 hint=_('You should run `hg debugobsconvert`'))
+
+@command(
+    'debugobsconvert',
+    [('', 'new-format', _bestformat, _('Destination format for markers.'))],
+    '')
+def debugobsconvert(ui, repo, new_format):
+    if new_format == repo.obsstore._version:
+        msg = _('New format is the same as the old format, not upgrading!')
+        raise util.Abort(msg)
+    f = repo.sopener('obsstore', 'wb', atomictemp=True)
+    origmarkers = repo.obsstore._all
+    known = set()
+    markers = []
+    for m in origmarkers:
+        # filter out invalid markers
+        if nullid in m[1]:
+            m = list(m)
+            m[1] = tuple(s for s in m[1] if s != nullid)
+            m = tuple(m)
+        if m in known:
+            continue
+        known.add(m)
+        markers.append(m)
+    ui.write(_('Old store is version %d, will rewrite in version %d\n') % (
+        repo.obsstore._version, new_format))
+    map(f.write, obsolete.encodemarkers(markers, True, new_format))
+    f.close()
+    ui.write(_('Done!\n'))
+
 
 @eh.wrapfunction(wireproto, 'capabilities')
 def capabilities(orig, repo, proto):
@@ -3000,17 +2924,16 @@
         caps += ' _evoext_pushobsmarkers_0'
         caps += ' _evoext_pullobsmarkers_0'
         caps += ' _evoext_obshash_0'
-        caps += ' _evoext_b2x_obsmarkers_0'
+        caps += ' _evoext_obshash_1'
+        caps += ' _evoext_getbundle_obscommon'
     return caps
 
 
 @eh.extsetup
 def _installwireprotocol(ui):
     localrepo.moderncaps.add('_evoext_pullobsmarkers_0')
-    localrepo.moderncaps.add('_evoext_b2x_obsmarkers_0')
     hgweb_mod.perms['evoext_pushobsmarkers_0'] = 'push'
     hgweb_mod.perms['evoext_pullobsmarkers_0'] = 'pull'
-    hgweb_mod.perms['evoext_obshash'] = 'pull'
     wireproto.commands['evoext_pushobsmarkers_0'] = (srv_pushobsmarkers, '')
     wireproto.commands['evoext_pullobsmarkers_0'] = (srv_pullobsmarkers, '*')
     # wrap command content
@@ -3018,4 +2941,3 @@
     def newcap(repo, proto):
         return capabilities(oldcap, repo, proto)
     wireproto.commands['capabilities'] = (newcap, args)
-    wireproto.commands['evoext_obshash'] = (srv_obshash, 'nodes')
--- a/hgext/simple4server.py
+++ b/hgext/simple4server.py
@@ -8,8 +8,8 @@
 For client side usages it is recommended to use the evolve extension for
 improved user interface.'''
 
-testedwith = '3.0.1'
-buglink = 'https://bitbucket.org/marmoute/mutable-history/issues'
+testedwith = '3.3.3 3.4-rc'
+buglink = 'http://bz.selenic.com/'
 
 import mercurial.obsolete
 mercurial.obsolete._enabled = True
@@ -25,6 +25,7 @@
 from mercurial import bundle2
 from mercurial import localrepo
 from mercurial import exchange
+from mercurial import node
 _pack = struct.pack
 
 gboptslist = gboptsmap = None
@@ -75,15 +76,6 @@
     repo.hook('evolve_pushobsmarkers')
     return wireproto.pushres(0)
 
-# from mercurial.obsolete: 19e9478c1a22
-def _encodemarkersstream(fp, markers):
-    """write a binary version of a set of markers
-
-    Includes the initial version number"""
-    fp.write(_pack('>B', 0))
-    for mark in markers:
-        fp.write(obsolete._encodeonemarker(mark))
-
 # from evolve extension: 1a23c7c52a43
 def _getobsmarkersstream(repo, heads=None, common=None):
     """Get a binary stream for all markers relevant to `::<heads> - ::<common>`
@@ -104,7 +96,8 @@
     nodes = [c.node() for c in repo.set(revset, *args)]
     markers = repo.obsstore.relevantmarkers(nodes)
     obsdata = StringIO()
-    _encodemarkersstream(obsdata, markers)
+    for chunk in obsolete.encodemarkers(markers, True):
+        obsdata.write(chunk)
     obsdata.seek(0)
     return obsdata
 
@@ -185,13 +178,19 @@
     return wireproto.streamres(proto.groupchunks(finaldata))
 
 
-# from evolve extension: 1a23c7c52a43
-def _obsrelsethashtree(repo):
-    """Build an obshash for every node in a repo
+# from evolve extension: 3249814dabd1
+def _obsrelsethashtreefm0(repo):
+    return _obsrelsethashtree(repo, obsolete._fm0encodeonemarker)
 
-    return a [(node), (obshash)] list. in revision order."""
+# from evolve extension: 3249814dabd1
+def _obsrelsethashtreefm1(repo):
+    return _obsrelsethashtree(repo, obsolete._fm1encodeonemarker)
+
+# from evolve extension: 3249814dabd1
+def _obsrelsethashtree(repo, encodeonemarker):
     cache = []
     unfi = repo.unfiltered()
+    markercache = {}
     for i in unfi:
         ctx = unfi[i]
         entry = 0
@@ -208,7 +207,11 @@
                 sha.update(p)
         tmarkers = repo.obsstore.relevantmarkers([ctx.node()])
         if tmarkers:
-            bmarkers = [obsolete._encodeonemarker(m) for m in tmarkers]
+            bmarkers = []
+            for m in tmarkers:
+                if not m in markercache:
+                    markercache[m] = encodeonemarker(m)
+                bmarkers.append(markercache[m])
             bmarkers.sort()
             for m in bmarkers:
                 entry += 1
@@ -219,23 +222,27 @@
             cache.append((ctx.node(), node.nullid))
     return cache
 
-# from evolve extension: 1a23c7c52a43
-def _obshash(repo, nodes):
-    """hash of binary version of relevant markers + obsparent
-
-    (special case so that all empty are hashed as nullid)"""
-    hashs = _obsrelsethashtree(repo)
+# from evolve extension: 3249814dabd1
+def _obshash(repo, nodes, version=0):
+    if version == 0:
+        hashs = _obsrelsethashtreefm0(repo)
+    elif version ==1:
+        hashs = _obsrelsethashtreefm1(repo)
+    else:
+        assert False
     nm = repo.changelog.nodemap
-    return  [hashs[nm.get(n)][1] for n in nodes]
+    revs = [nm.get(n) for n in nodes]
+    return [r is None and node.nullid or hashs[r][1] for r in revs]
 
-# from evolve extension: 1a23c7c52a43
+# from evolve extension: 3249814dabd1
 def srv_obshash(repo, proto, nodes):
-    """give the obshash of a a set of node
-
-    Used for markes discovery"""
     return wireproto.encodelist(_obshash(repo, wireproto.decodelist(nodes)))
 
-# from evolve extension: 1a23c7c52a43
+# from evolve extension: 3249814dabd1
+def srv_obshash1(repo, proto, nodes):
+    return wireproto.encodelist(_obshash(repo, wireproto.decodelist(nodes), version=1))
+
+# from evolve extension: 3249814dabd1
 def capabilities(orig, repo, proto):
     """wrapper to advertise new capability"""
     caps = orig(repo, proto)
@@ -244,22 +251,32 @@
         caps += ' _evoext_pushobsmarkers_0'
         caps += ' _evoext_pullobsmarkers_0'
         caps += ' _evoext_obshash_0'
-        caps += ' _evoext_b2x_obsmarkers_0'
+        caps += ' _evoext_obshash_1'
+        caps += ' _evoext_getbundle_obscommon'
     return caps
 
+def _getbundleobsmarkerpart(orig, bundler, repo, source, **kwargs):
+    if 'evo_obscommon' not in kwargs:
+        return orig(bundler, repo, source, **kwargs)
+
+    heads = kwargs.get('heads')
+    if 'evo_obscommon' not in kwargs:
+        return orig(bundler, repo, source, **kwargs)
+
+    if kwargs.get('obsmarkers', False):
+        if heads is None:
+            heads = repo.heads()
+        obscommon = kwargs.get('evo_obscommon', ())
+        obsset = repo.set('::%ln - ::%ln', heads, obscommon)
+        subset = [c.node() for c in obsset]
+        markers = repo.obsstore.relevantmarkers(subset)
+        exchange.buildobsmarkerspart(bundler, markers)
 
 # from evolve extension: 10867a8e27c6
 # heavily modified
 def extsetup(ui):
     localrepo.moderncaps.add('_evoext_b2x_obsmarkers_0')
-    if gboptsmap is not None:
-        gboptsmap['evo_obsmarker'] = 'plain'
-        gboptsmap['evo_obscommon'] = 'plain'
-        gboptsmap['evo_obsheads'] = 'plain'
-    else:
-        gboptslist.append('evo_obsheads')
-        gboptslist.append('evo_obscommon')
-        gboptslist.append('evo_obsmarker')
+    gboptsmap['evo_obscommon'] = 'nodes'
     if not util.safehasattr(obsolete.obsstore, 'relevantmarkers'):
         obsolete.obsstore = pruneobsstore
         obsolete.obsstore.relevantmarkers = relevantmarkers
@@ -269,7 +286,10 @@
     wireproto.commands['evoext_pushobsmarkers_0'] = (srv_pushobsmarkers, '')
     wireproto.commands['evoext_pullobsmarkers_0'] = (srv_pullobsmarkers, '*')
     # wrap module content
-    extensions.wrapfunction(exchange, '_getbundleextrapart', _getbundleextrapart)
+    origfunc = exchange.getbundle2partsmapping['obsmarkers']
+    def newfunc(*args, **kwargs):
+        return _getbundleobsmarkerpart(origfunc, *args, **kwargs)
+    exchange.getbundle2partsmapping['obsmarkers'] = newfunc
     extensions.wrapfunction(wireproto, 'capabilities', capabilities)
     # wrap command content
     oldcap, args = wireproto.commands['capabilities']
@@ -277,51 +297,8 @@
         return capabilities(oldcap, repo, proto)
     wireproto.commands['capabilities'] = (newcap, args)
     wireproto.commands['evoext_obshash'] = (srv_obshash, 'nodes')
+    wireproto.commands['evoext_obshash1'] = (srv_obshash1, 'nodes')
     # specific simple4server content
     extensions.wrapfunction(pushkey, '_nslist', _nslist)
     pushkey._namespaces['namespaces'] = (lambda *x: False, pushkey._nslist)
 
-
-#from evolve extension
-@bundle2.parthandler('evolve:b2x:obsmarkerv1')
-def handleobsmarkerv1(op, inpart):
-    """add a stream of obsmarker to the repo"""
-    tr = op.gettransaction()
-    advparams = dict(inpart.advisoryparams)
-    length = advparams.get('totalbytes')
-    if length is None:
-        obsdata = inpart.read()
-    else:
-        length = int(length)
-        data = StringIO()
-        current = 0
-        op.ui.progress('OBSEXC', current, unit="bytes", total=length)
-        while current < length:
-            readsize = min(length-current, 4096)
-            data.write(inpart.read(readsize))
-            current += readsize
-            op.ui.progress('OBSEXC', current, unit="bytes", total=length)
-        op.ui.progress('OBSEXC', None)
-        obsdata = data.getvalue()
-    totalsize = len(obsdata)
-    old = len(op.repo.obsstore._all)
-    op.repo.obsstore.mergemarkers(tr, obsdata)
-    new = len(op.repo.obsstore._all) - old
-    op.records.add('evo_obsmarkers', {'new': new, 'bytes': totalsize})
-    tr.hookargs['evolve_new_obsmarkers'] = str(new)
-
-#from evolve extension
-def _getbundleextrapart(orig, bundler, repo, source, **kwargs):
-    if int(kwargs.pop('evo_obsmarker', False)):
-        common = kwargs.pop('evo_obscommon')
-        common = wireproto.decodelist(common)
-        heads = kwargs.pop('evo_obsheads')
-        heads = wireproto.decodelist(heads)
-        obsdata = _getobsmarkersstream(repo, common=common, heads=heads)
-        if len(obsdata.getvalue()) > 5:
-            advparams = [('totalbytes', str(len(obsdata.getvalue())))]
-            obspart = bundle2.bundlepart('EVOLVE:B2X:OBSMARKERV1',
-                                         advisoryparams=advparams,
-                                         data=obsdata)
-            bundler.addpart(obspart)
-    orig(bundler, repo, source)
--- a/setup.py
+++ b/setup.py
@@ -2,10 +2,21 @@
 # Credit to Augie Fackler <durin42@gmail.com>
 
 from distutils.core import setup
+from os.path import dirname, join
+
+def get_version(relpath):
+    '''Read version info from a file without importing it'''
+    for line in open(join(dirname(__file__), relpath), 'rb'):
+        # Decode to a fail-safe string for PY3
+        # (gives unicode object in PY2)
+        line = line.decode('utf8')
+        if '__version__' in line:
+          if "'" in line:
+            return line.split("'")[1]
 
 setup(
     name='hg-evolve',
-    version='4.0.0',
+    version=get_version('hgext/evolve.py'),
     author='Pierre-Yves David',
     maintainer='Pierre-Yves David',
     maintainer_email='pierre-yves.david@ens-lyon.org',
--- a/tests/_exc-util.sh
+++ b/tests/_exc-util.sh
@@ -12,14 +12,15 @@
 publish=False
 
 [experimental]
-verbose-obsolescence-exchange=true
+verbose-obsolescence-exchange=false
+bundle2-exp=true
+bundle2-output-capture=True
 
 [alias]
 debugobsolete=debugobsolete -d '0 0'
 
 [extensions]
 hgext.strip=
-hgext.rebase=
 EOF
 echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
 
--- a/tests/test-amend.t
+++ b/tests/test-amend.t
@@ -1,6 +1,5 @@
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
@@ -97,3 +96,65 @@
   $ HGUSER=newbie hg amend -U
   $ hg parents --template '{rev}  {author}\n'
   7  newbie
+
+Check that --logfile works
+  $ echo "logfile message" > logfile.txt
+  $ hg amend -l logfile.txt
+  $ hg log -r . -T "{desc}\n"
+  logfile message
+
+# Make sure we don't get reparented to -1 with no username (issue4211)
+  $ HGUSER=
+  $ hg amend -e --config ui.username= -m "empty user"
+  abort: no username supplied
+  (use "hg config --edit" to set your username)
+  [255]
+  $ hg sum
+  parent: 8:* tip (glob)
+   logfile message
+  branch: foo
+  commit: 1 unknown (clean)
+  update: (current)
+
+Check the help
+  $ hg amend -h
+  hg amend [OPTION]... [FILE]...
+  
+  aliases: refresh
+  
+  combine a changeset with updates and replace it with a new one
+  
+      Commits a new changeset incorporating both the changes to the given files
+      and all the changes from the current parent changeset into the repository.
+  
+      See "hg commit" for details about committing changes.
+  
+      If you don't specify -m, the parent's message will be reused.
+  
+      Behind the scenes, Mercurial first commits the update as a regular child
+      of the current parent. Then it creates a new commit on the parent's
+      parents with the updated contents. Then it changes the working copy parent
+      to this new combined changeset. Finally, the old changeset and its update
+      are hidden from "hg log" (unless you use --hidden with log).
+  
+      Returns 0 on success, 1 if nothing changed.
+  
+  options ([+] can be repeated):
+  
+   -A --addremove           mark new/missing files as added/removed before
+                            committing
+   -e --edit                invoke editor on commit messages
+      --close-branch        mark a branch as closed, hiding it from the branch
+                            list
+   -s --secret              use the secret phase for committing
+   -I --include PATTERN [+] include names matching the given patterns
+   -X --exclude PATTERN [+] exclude names matching the given patterns
+   -m --message TEXT        use text as commit message
+   -l --logfile FILE        read commit message from file
+   -d --date DATE           record the specified date as commit date
+   -u --user USER           record the specified user as committer
+   -D --current-date        record the current date as commit date
+   -U --current-user        record the current user as committer
+   -i --interactive         use interactive mode
+  
+  (some details hidden, use --verbose to show complete help)
--- a/tests/test-corrupt.t
+++ b/tests/test-corrupt.t
@@ -13,7 +13,6 @@
   > git = 1
   > unified = 0
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
@@ -111,7 +110,8 @@
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
-  pushing 2 obsolescence markers (147 bytes)
+  pushing 2 obsolescence markers (* bytes) (glob)
+  2 obsolescence markers added
   $ hg -R ../other verify
   checking changesets
   checking manifests
--- a/tests/test-drop.t
+++ b/tests/test-drop.t
@@ -1,7 +1,6 @@
 
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "drophack=$(echo $(dirname $TESTDIR))/hgext/drophack.py" >> $HGRCPATH
@@ -63,7 +62,7 @@
   0 obsmarkers found
   search nodes: wall * comb * user * sys * (glob)
   1 nodes found
-  saved backup bundle to $TESTTMP/repo/.hg/strip-backup/d4e7845543ff-drophack.hg (glob)
+  saved backup bundle to $TESTTMP/repo/.hg/strip-backup/d4e7845543ff-8ad8efe0-drophack.hg (glob)
   strip nodes: wall * comb * user * sys * (glob)
   $ summary
   ============ graph ==============
new file mode 100644
--- /dev/null
+++ b/tests/test-evolve-bumped.t
@@ -0,0 +1,82 @@
+  $ hg init public
+  $ cd public
+  $ echo a > a
+  $ hg commit -A -m init
+  adding a
+  $ cd ..
+
+  $ evolvepath=$(echo $(dirname $TESTDIR))/hgext/evolve.py
+  $ hg clone -U public private
+  $ cd private
+  $ cat >> .hg/hgrc <<EOF
+  > [extensions]
+  > evolve = $evolvepath
+  > [phases]
+  > publish = false
+  > EOF
+  $ cd ..
+
+  $ cp -a private alice
+  $ cp -a private bob
+
+  $ cd alice
+  $ hg update
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ echo a >> a
+  $ hg commit -u alice -m 'modify a'
+  $ hg push ../private
+  pushing to ../private
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  $ hg log -r 'draft()'
+  changeset:   1:4d1169d82e47
+  tag:         tip
+  user:        alice
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     modify a
+  
+
+  $ cd ../bob
+  $ hg pull ../private
+  pulling from ../private
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  pull obsolescence markers
+  (run 'hg update' to get a working copy)
+  $ hg log -r 'draft()'
+  changeset:   1:4d1169d82e47
+  tag:         tip
+  user:        alice
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     modify a
+  
+  $ hg push ../public
+  pushing to ../public
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  $ hg log -r 'draft()'
+
+  $ cd ../alice
+  $ hg amend -m 'tweak a'
+  $ hg pull ../public
+  pulling from ../public
+  searching for changes
+  no changes found
+  pull obsolescence markers
+  1 new bumped changesets
+
+  $ hg evolve -a
+  recreate:[2] tweak a
+  atop:[1] modify a
+  computing new diff
+  committed as 4d1169d82e47
+  working directory is now at 4d1169d82e47
--- a/tests/test-evolve.t
+++ b/tests/test-evolve.t
@@ -13,7 +13,6 @@
   > git = 1
   > unified = 0
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
@@ -103,6 +102,17 @@
   working directory now at 7c3bad9141dc
   $ hg st
   A g
+
+Smoketest debugobsrelsethashtree:
+
+  $ hg debugobsrelsethashtree
+  1f0dee641bb7258c56bd60e93edfa2405381c41e 0000000000000000000000000000000000000000
+  7c3bad9141dcb46ff89abf5f61856facd56e476c * (glob)
+  4538525df7e2b9f09423636c61ef63a4cb872a2d * (glob)
+  47d2a3944de8b013de3be9578e8e344ea2e6c097 * (glob)
+  fbb94e3a0ecf6d20c2cc31152ef162ce45af982f * (glob)
+  e44648563c73f75950076031c6fdf06629de95f1 * (glob)
+
   $ cd ..
 
 ##########################
@@ -447,7 +457,7 @@
   abort: empty revision set
   [255]
   $ hg --config extensions.hgext.mq= strip --hidden 'extinct()'
-  saved backup bundle to $TESTTMP/alpha/.hg/strip-backup/e87767087a57-backup.hg (glob)
+  saved backup bundle to $TESTTMP/alpha/.hg/strip-backup/e87767087a57-d7bd82e9-backup.hg (glob)
   $ hg verify
   checking changesets
   checking manifests
@@ -497,9 +507,9 @@
   o  0:8685c6d34325@default(draft) add 0
   
   $ hg graft -r3 -O
-  grafting revision 3
+  grafting 3:0e84df4912da "add 3"
   $ hg graft -r1 -o 2
-  grafting revision 1
+  grafting 1:73d38bb17fd7 "add 1"
   $ glog --hidden
   @  6:acb28cd497b7@default(draft) add 1
   |
@@ -527,7 +537,7 @@
   created new head
   $ hg up -qC 6
   $ hg graft -O 7
-  grafting revision 7
+  grafting 7:a5bfd90a2f29 "conflict" (tip)
   merging 1
   warning: conflicts during merge.
   merging 1 incomplete! (edit conflicts, then use 'hg resolve --mark')
@@ -540,7 +550,7 @@
   $ hg resolve -m 1
   (no more unresolved files)
   $ hg graft --continue -O
-  grafting revision 7
+  grafting 7:a5bfd90a2f29 "conflict" (tip)
   $ glog --hidden
   @  8:920e58bb443b@default(draft) conflict
   |
@@ -636,7 +646,8 @@
   3 changesets folded
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg fold 6 # want to run hg fold 6
-  abort: unknown revision '6'!
+  abort: hidden revision '6'!
+  (use --hidden to access hidden revisions)
   [255]
   $ hg log -r 11 --template '{desc}\n'
   add 3
@@ -697,9 +708,7 @@
                 1 successors:        10
                 2 successors:         0
       more than 2 successors:         0
-  average meta length:               27
       available  keys:
-                 date:               10
                  user:               10
   disconnected clusters:              1
           any known node:             1
@@ -771,3 +780,110 @@
   7 - 5c9c8d9c2e4e another feature (child of ba0ec09b1bab) (public)
   6 - ba0ec09b1bab a nifty feature (public)
   0 - e55e0562ee93 base (public)
+
+  $ cd ..
+
+Test branch preservation:
+===========================
+
+  $ hg init evolving-branch
+  $ cd evolving-branch
+  $ touch a
+  $ hg add a
+  $ hg ci -m 'a0'
+  $ echo 1 > a
+  $ hg ci -m 'a1'
+  $ echo 2 > a
+  $ hg ci -m 'a2'
+  $ echo 3 > a
+  $ hg ci -m 'a3'
+
+  $ hg log -G --template '{rev} [{branch}] {desc|firstline}\n'
+  @  3 [default] a3
+  |
+  o  2 [default] a2
+  |
+  o  1 [default] a1
+  |
+  o  0 [default] a0
+  
+
+branch change propagated
+
+  $ hg up 'desc(a2)'
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg branch mybranch
+  marked working directory as branch mybranch
+  (branches are permanent and global, did you want a bookmark?)
+  $ hg amend
+  1 new unstable changesets
+
+  $ hg evolve
+  move:[3] a3
+  atop:[5] a2
+  working directory is now at 7c5649f73d11
+
+  $ hg log -G --template '{rev} [{branch}] {desc|firstline}\n'
+  @  6 [mybranch] a3
+  |
+  o  5 [mybranch] a2
+  |
+  o  1 [default] a1
+  |
+  o  0 [default] a0
+  
+
+branch change preserved
+
+  $ hg up 'desc(a1)'
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg amend -m 'a1_'
+  2 new unstable changesets
+  $ hg evolve
+  move:[5] a2
+  atop:[7] a1_
+  working directory is now at 5406c5cfee42
+  $ hg evolve
+  move:[6] a3
+  atop:[8] a2
+  working directory is now at c7661e655801
+  $ hg log -G --template '{rev} [{branch}] {desc|firstline}\n'
+  @  9 [mybranch] a3
+  |
+  o  8 [mybranch] a2
+  |
+  o  7 [default] a1_
+  |
+  o  0 [default] a0
+  
+
+Evolve from the middle of a stack pick the right changesets.
+
+  $ hg up 7
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg ci --amend -m 'a1__'
+  2 new unstable changesets
+
+  $ hg up 8
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg evolve
+  nothing to evolve here
+  (2 troubled changesets, do you want --any ?)
+  [2]
+
+
+Evolve disables active bookmarks.
+
+  $ hg up 10
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg bookmark testbookmark
+  $ ls .hg/bookmarks*
+  .hg/bookmarks
+  .hg/bookmarks.* (glob)
+  $ hg evolve
+  move:[8] a2
+  atop:[10] a1__
+  (leaving bookmark testbookmark)
+  working directory is now at f37ed7a60f43
+  $ ls .hg/bookmarks*
+  .hg/bookmarks
--- a/tests/test-exchange-A1.t
+++ b/tests/test-exchange-A1.t
@@ -68,14 +68,11 @@
   ## pushing "A" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -89,10 +86,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
@@ -118,14 +112,11 @@
   ## pushing from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -139,10 +130,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
@@ -227,14 +215,11 @@
   ## pushing "B" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 2 changesets with 2 changes to 2 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 3 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -248,10 +233,7 @@
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
@@ -274,14 +256,11 @@
   ## pushing from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 2 changesets with 2 changes to 2 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 3 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -295,10 +274,7 @@
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
--- a/tests/test-exchange-A2.t
+++ b/tests/test-exchange-A2.t
@@ -76,14 +76,11 @@
   ## pushing "A" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -98,10 +95,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
--- a/tests/test-exchange-A3.t
+++ b/tests/test-exchange-A3.t
@@ -88,14 +88,11 @@
   ## pushing "A1" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -110,10 +107,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
@@ -192,14 +186,11 @@
   ## pushing "A1" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files (+1 heads)
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files (+1 heads)
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -214,10 +205,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 2 files (+1 heads)
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg heads' to see heads, 'hg merge' to merge)
   1 new unstable changesets
   ## post pull state
--- a/tests/test-exchange-A4.t
+++ b/tests/test-exchange-A4.t
@@ -81,14 +81,11 @@
   ## pushing "B" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 2 changesets with 2 changes to 2 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 3 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -103,10 +100,7 @@
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
--- a/tests/test-exchange-A5.t
+++ b/tests/test-exchange-A5.t
@@ -88,14 +88,11 @@
   ## pushing "B1" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -111,10 +108,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
--- a/tests/test-exchange-A6.t
+++ b/tests/test-exchange-A6.t
@@ -80,10 +80,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -93,10 +90,7 @@
   ## pulling "e5ea8f9c7314" from main into pulldest
   pulling from main
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   ## post pull state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -119,10 +113,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 3 nodes
-  OBSEXC: pushing 1 obsolescence markers (65 bytes)
-  OBSEXC: DONE
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -133,10 +124,7 @@
   pulling from main
   searching for changes
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (65 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   ## post pull state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-A7.t
+++ b/tests/test-exchange-A7.t
@@ -60,10 +60,6 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: no marker to push
-  OBSEXC: DONE
   ## post push state
   # obstore: main
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -72,9 +68,6 @@
   ## pulling "a9bdc8b26820" from main into pulldest
   pulling from main
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: no unknown remote markers
-  OBSEXC: DONE
   ## post pull state
   # obstore: main
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-B1.t
+++ b/tests/test-exchange-B1.t
@@ -67,14 +67,11 @@
   ## pushing "A" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (89 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -88,10 +85,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (89 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
@@ -114,14 +108,11 @@
   ## pushing from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (89 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -135,10 +126,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (89 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
--- a/tests/test-exchange-B2.t
+++ b/tests/test-exchange-B2.t
@@ -63,10 +63,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: pushing 1 obsolescence markers (89 bytes)
-  OBSEXC: DONE
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -76,10 +73,7 @@
   ## pulling "a9bdc8b26820" from main into pulldest
   pulling from main
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (89 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   ## post pull state
   # obstore: main
   f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -102,10 +96,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: pushing 1 obsolescence markers (89 bytes)
-  OBSEXC: DONE
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -116,10 +107,7 @@
   pulling from main
   searching for changes
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (89 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   ## post pull state
   # obstore: main
   f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-B3.t
+++ b/tests/test-exchange-B3.t
@@ -75,14 +75,10 @@
   ## pushing "A" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: no marker to push
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
   ## post push state
   # obstore: main
   e56289ab6378dc752fd7965f8bf66b58bda740bd 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -95,9 +91,6 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: no unknown remote markers
-  OBSEXC: DONE
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
--- a/tests/test-exchange-B4.t
+++ b/tests/test-exchange-B4.t
@@ -41,17 +41,17 @@
   $ hg push ../pushdest
   pushing to ../pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 2 changesets with 2 changes to 2 files
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
   $ hg push ../pulldest
   pushing to ../pulldest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 2 changesets with 2 changes to 2 files
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
   $ hg update -q 0
   $ mkcommit C
   created new head
@@ -89,10 +89,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: pushing 1 obsolescence markers (89 bytes)
-  OBSEXC: DONE
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -102,10 +99,7 @@
   ## pulling "a9bdc8b26820" from main into pulldest
   pulling from main
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (89 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   ## post pull state
   # obstore: main
   7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -128,10 +122,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 3 nodes
-  OBSEXC: pushing 1 obsolescence markers (89 bytes)
-  OBSEXC: DONE
+  remote: 1 new obsolescence markers
   ## post push state
   # obstore: main
   7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -142,10 +133,7 @@
   pulling from main
   searching for changes
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (89 bytes)
-  OBSEXC: 1 obsolescence markers added
-  OBSEXC: DONE
+  1 new obsolescence markers
   ## post pull state
   # obstore: main
   7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-B5.t
+++ b/tests/test-exchange-B5.t
@@ -87,14 +87,11 @@
   ## pushing "B" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 2 changesets with 2 changes to 2 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 3 nodes
-  OBSEXC: pushing 2 obsolescence markers (153 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -110,10 +107,7 @@
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (153 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   (run 'hg update' to get a working copy)
   1 new unstable changesets
   ## post pull state
@@ -142,14 +136,11 @@
   ## pushing "B" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 2 changesets with 2 changes to 2 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 3 nodes
-  OBSEXC: pushing 2 obsolescence markers (153 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -165,10 +156,7 @@
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (153 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   (run 'hg update' to get a working copy)
   1 new unstable changesets
   ## post pull state
--- a/tests/test-exchange-B6.t
+++ b/tests/test-exchange-B6.t
@@ -75,10 +75,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: pushing 2 obsolescence markers (153 bytes)
-  OBSEXC: DONE
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   962ecf6b1afc94e15c7e48fdfb76ef8abd11372b f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -90,10 +87,7 @@
   ## pulling "a9bdc8b26820" from main into pulldest
   pulling from main
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (153 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   ## post pull state
   # obstore: main
   962ecf6b1afc94e15c7e48fdfb76ef8abd11372b f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-B7.t
+++ b/tests/test-exchange-B7.t
@@ -67,10 +67,6 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: no marker to push
-  OBSEXC: DONE
   ## post push state
   # obstore: main
   f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -79,9 +75,6 @@
   ## pulling "a9bdc8b26820" from main into pulldest
   pulling from main
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: no unknown remote markers
-  OBSEXC: DONE
   ## post pull state
   # obstore: main
   f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-C1.t
+++ b/tests/test-exchange-C1.t
@@ -70,10 +70,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: pushing 2 obsolescence markers (177 bytes)
-  OBSEXC: DONE
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -85,10 +82,7 @@
   ## pulling "a9bdc8b26820" from main into pulldest
   pulling from main
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (177 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   ## post pull state
   # obstore: main
   f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -115,10 +109,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: pushing 2 obsolescence markers (177 bytes)
-  OBSEXC: DONE
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -131,10 +122,7 @@
   pulling from main
   searching for changes
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (177 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   ## post pull state
   # obstore: main
   f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-C2.t
+++ b/tests/test-exchange-C2.t
@@ -76,14 +76,11 @@
   ## pushing "A1" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 2 obsolescence markers (153 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -99,10 +96,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (153 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
@@ -129,14 +123,11 @@
   ## pushing from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 2 obsolescence markers (153 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -152,10 +143,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (153 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
--- a/tests/test-exchange-C3.t
+++ b/tests/test-exchange-C3.t
@@ -83,10 +83,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: pushing 3 obsolescence markers (241 bytes)
-  OBSEXC: DONE
+  remote: 3 new obsolescence markers
   ## post push state
   # obstore: main
   06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -100,10 +97,7 @@
   ## pulling "a9bdc8b26820" from main into pulldest
   pulling from main
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (241 bytes)
-  OBSEXC: 3 obsolescence markers added
-  OBSEXC: DONE
+  3 new obsolescence markers
   ## post pull state
   # obstore: main
   06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -134,10 +128,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: pushing 3 obsolescence markers (241 bytes)
-  OBSEXC: DONE
+  remote: 3 new obsolescence markers
   ## post push state
   # obstore: main
   06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -152,10 +143,7 @@
   pulling from main
   searching for changes
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (241 bytes)
-  OBSEXC: 3 obsolescence markers added
-  OBSEXC: DONE
+  3 new obsolescence markers
   ## post pull state
   # obstore: main
   06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-C4.t
+++ b/tests/test-exchange-C4.t
@@ -90,10 +90,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: pushing 2 obsolescence markers (153 bytes)
-  OBSEXC: DONE
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -106,10 +103,7 @@
   ## pulling "a9bdc8b26820" from main into pulldest
   pulling from main
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (153 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   ## post pull state
   # obstore: main
   7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-D1.t
+++ b/tests/test-exchange-D1.t
@@ -70,14 +70,11 @@
   ## pushing "A1" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 2 obsolescence markers (153 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -93,10 +90,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (153 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
--- a/tests/test-exchange-D2.t
+++ b/tests/test-exchange-D2.t
@@ -67,10 +67,7 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: pushing 2 obsolescence markers (153 bytes)
-  OBSEXC: DONE
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -83,10 +80,7 @@
   pulling from main
   searching for changes
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (153 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   ## post pull state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-D3.t
+++ b/tests/test-exchange-D3.t
@@ -72,10 +72,6 @@
   pushing to pushdest
   searching for changes
   no changes found
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 1 nodes
-  OBSEXC: no marker to push
-  OBSEXC: DONE
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f 6aa67a7b4baa6fb41b06aed38d5b1201436546e2 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -85,9 +81,6 @@
   ## pulling "a9bdc8b26820" from main into pulldest
   pulling from main
   no changes found
-  OBSEXC: pull obsolescence markers
-  OBSEXC: no unknown remote markers
-  OBSEXC: DONE
   ## post pull state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f 6aa67a7b4baa6fb41b06aed38d5b1201436546e2 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-exchange-D4.t
+++ b/tests/test-exchange-D4.t
@@ -85,14 +85,11 @@
   ## pushing "A1" from main to pushdest
   pushing to pushdest
   searching for changes
-  adding changesets
-  adding manifests
-  adding file changes
-  added 1 changesets with 1 changes to 1 files
-  OBSEXC: computing relevant nodes
-  OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 2 obsolescence markers (129 bytes)
-  OBSEXC: DONE
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: 2 new obsolescence markers
   ## post push state
   # obstore: main
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
@@ -110,10 +107,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (129 bytes)
-  OBSEXC: 2 obsolescence markers added
-  OBSEXC: DONE
+  2 new obsolescence markers
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
--- a/tests/test-import.t
+++ b/tests/test-import.t
@@ -9,7 +9,6 @@
   $ hg init auto-obsolete
   $ cd auto-obsolete
   $ echo '[extensions]' >> $HGRCPATH
-  $ echo 'rebase=' >> $HGRCPATH
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
   $ echo A > a
   $ hg commit -Am A
new file mode 100644
--- /dev/null
+++ b/tests/test-obsconvert.t
@@ -0,0 +1,78 @@
+  $ cat >> $HGRCPATH <<EOF
+  > [extensions]
+  > EOF
+  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
+  $ hg init alpha
+  $ cd alpha
+  $ echo foo > foo
+  $ hg addremove
+  adding foo
+  $ hg ci -m 'foo'
+  $ for x in 1 2 3 4 ; do
+  >   echo foo $x > foo
+  >   hg amend
+  > done
+
+Test conversion between obsolete marker formats
+  $ hg debugobsolete
+  e63c23eaa88ae77967edcf4ea194d31167c478b0 b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34 0 (*) {'user': 'test'} (glob)
+  a5b276878fa564da042b4b9efef3713ceea20350 0 {e63c23eaa88ae77967edcf4ea194d31167c478b0} (*) {'user': 'test'} (glob)
+  b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34 384fc811182687231962e486f23ea8c5bab7a2d3 0 (*) {'user': 'test'} (glob)
+  2291082406feb57d0f83b9b0a6777b6074f3fde6 0 {b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34} (*) {'user': 'test'} (glob)
+  384fc811182687231962e486f23ea8c5bab7a2d3 949d379b3c3bf051906bc3528c049cb536e2ec86 0 (*) {'user': 'test'} (glob)
+  1616bdbe82d3fd1fb7c4e068aee277835672ffdc 0 {384fc811182687231962e486f23ea8c5bab7a2d3} (*) {'user': 'test'} (glob)
+  949d379b3c3bf051906bc3528c049cb536e2ec86 f2e4c45b2a4a58ccf7ef6825b8fa5685873cd2f7 0 (*) {'user': 'test'} (glob)
+  8668d55aac650158bb510be6d47d21e3db9e5c75 0 {949d379b3c3bf051906bc3528c049cb536e2ec86} (*) {'user': 'test'} (glob)
+  $ hg debugobsconvert --new-format 0
+  Old store is version 1, will rewrite in version 0
+  Done!
+  $ hg debugobsolete
+  e63c23eaa88ae77967edcf4ea194d31167c478b0 b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34 0 (*) {'user': 'test'} (glob)
+  a5b276878fa564da042b4b9efef3713ceea20350 0 {e63c23eaa88ae77967edcf4ea194d31167c478b0} (*) {'user': 'test'} (glob)
+  b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34 384fc811182687231962e486f23ea8c5bab7a2d3 0 (*) {'user': 'test'} (glob)
+  2291082406feb57d0f83b9b0a6777b6074f3fde6 0 {b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34} (*) {'user': 'test'} (glob)
+  384fc811182687231962e486f23ea8c5bab7a2d3 949d379b3c3bf051906bc3528c049cb536e2ec86 0 (*) {'user': 'test'} (glob)
+  1616bdbe82d3fd1fb7c4e068aee277835672ffdc 0 {384fc811182687231962e486f23ea8c5bab7a2d3} (*) {'user': 'test'} (glob)
+  949d379b3c3bf051906bc3528c049cb536e2ec86 f2e4c45b2a4a58ccf7ef6825b8fa5685873cd2f7 0 (*) {'user': 'test'} (glob)
+  8668d55aac650158bb510be6d47d21e3db9e5c75 0 {949d379b3c3bf051906bc3528c049cb536e2ec86} (*) {'user': 'test'} (glob)
+  $ hg debugobsconvert --new-format 0
+  abort: New format is the same as the old format, not upgrading!
+  [255]
+  $ hg debugobsolete
+  e63c23eaa88ae77967edcf4ea194d31167c478b0 b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34 0 (*) {'user': 'test'} (glob)
+  a5b276878fa564da042b4b9efef3713ceea20350 0 {e63c23eaa88ae77967edcf4ea194d31167c478b0} (*) {'user': 'test'} (glob)
+  b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34 384fc811182687231962e486f23ea8c5bab7a2d3 0 (*) {'user': 'test'} (glob)
+  2291082406feb57d0f83b9b0a6777b6074f3fde6 0 {b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34} (*) {'user': 'test'} (glob)
+  384fc811182687231962e486f23ea8c5bab7a2d3 949d379b3c3bf051906bc3528c049cb536e2ec86 0 (*) {'user': 'test'} (glob)
+  1616bdbe82d3fd1fb7c4e068aee277835672ffdc 0 {384fc811182687231962e486f23ea8c5bab7a2d3} (*) {'user': 'test'} (glob)
+  949d379b3c3bf051906bc3528c049cb536e2ec86 f2e4c45b2a4a58ccf7ef6825b8fa5685873cd2f7 0 (*) {'user': 'test'} (glob)
+  8668d55aac650158bb510be6d47d21e3db9e5c75 0 {949d379b3c3bf051906bc3528c049cb536e2ec86} (*) {'user': 'test'} (glob)
+  $ hg debugobsconvert --new-format 1
+  Old store is version 0, will rewrite in version 1
+  Done!
+  $ hg debugobsolete
+  e63c23eaa88ae77967edcf4ea194d31167c478b0 b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34 0 (*) {'user': 'test'} (glob)
+  a5b276878fa564da042b4b9efef3713ceea20350 0 {e63c23eaa88ae77967edcf4ea194d31167c478b0} (*) {'user': 'test'} (glob)
+  b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34 384fc811182687231962e486f23ea8c5bab7a2d3 0 (*) {'user': 'test'} (glob)
+  2291082406feb57d0f83b9b0a6777b6074f3fde6 0 {b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34} (*) {'user': 'test'} (glob)
+  384fc811182687231962e486f23ea8c5bab7a2d3 949d379b3c3bf051906bc3528c049cb536e2ec86 0 (*) {'user': 'test'} (glob)
+  1616bdbe82d3fd1fb7c4e068aee277835672ffdc 0 {384fc811182687231962e486f23ea8c5bab7a2d3} (*) {'user': 'test'} (glob)
+  949d379b3c3bf051906bc3528c049cb536e2ec86 f2e4c45b2a4a58ccf7ef6825b8fa5685873cd2f7 0 (*) {'user': 'test'} (glob)
+  8668d55aac650158bb510be6d47d21e3db9e5c75 0 {949d379b3c3bf051906bc3528c049cb536e2ec86} (*) {'user': 'test'} (glob)
+
+Test that the default is some reasonably modern format (first downgrade)
+  $ hg debugobsconvert --new-format 0
+  Old store is version 1, will rewrite in version 0
+  Done!
+  $ hg debugobsconvert
+  Old store is version 0, will rewrite in version 1
+  Done!
+  $ hg debugobsolete
+  e63c23eaa88ae77967edcf4ea194d31167c478b0 b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34 0 (*) {'user': 'test'} (glob)
+  a5b276878fa564da042b4b9efef3713ceea20350 0 {e63c23eaa88ae77967edcf4ea194d31167c478b0} (*) {'user': 'test'} (glob)
+  b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34 384fc811182687231962e486f23ea8c5bab7a2d3 0 (*) {'user': 'test'} (glob)
+  2291082406feb57d0f83b9b0a6777b6074f3fde6 0 {b81ac6b9d2a55f9a7a6b90a006b1aab0568d6d34} (*) {'user': 'test'} (glob)
+  384fc811182687231962e486f23ea8c5bab7a2d3 949d379b3c3bf051906bc3528c049cb536e2ec86 0 (*) {'user': 'test'} (glob)
+  1616bdbe82d3fd1fb7c4e068aee277835672ffdc 0 {384fc811182687231962e486f23ea8c5bab7a2d3} (*) {'user': 'test'} (glob)
+  949d379b3c3bf051906bc3528c049cb536e2ec86 f2e4c45b2a4a58ccf7ef6825b8fa5685873cd2f7 0 (*) {'user': 'test'} (glob)
+  8668d55aac650158bb510be6d47d21e3db9e5c75 0 {949d379b3c3bf051906bc3528c049cb536e2ec86} (*) {'user': 'test'} (glob)
--- a/tests/test-obsolete-push.t
+++ b/tests/test-obsolete-push.t
@@ -2,7 +2,6 @@
   > [defaults]
   > amend=-d "0 0"
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
--- a/tests/test-obsolete.t
+++ b/tests/test-obsolete.t
@@ -183,7 +183,8 @@
   adding manifests
   adding file changes
   added 5 changesets with 5 changes to 5 files (+1 heads)
-  pushing 2 obsolescence markers (129 bytes)
+  pushing 2 obsolescence markers (* bytes) (glob)
+  2 obsolescence markers added
   $ hg -R ../other-new verify
   checking changesets
   checking manifests
@@ -237,7 +238,8 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
-  pushing 3 obsolescence markers (193 bytes)
+  pushing 3 obsolescence markers (* bytes) (glob)
+  1 obsolescence markers added
   $ qlog -R ../other-new
   5
   - 95de7fc6918d
@@ -259,7 +261,8 @@
   pushing to ../other-new
   searching for changes
   no changes found
-  pushing 3 obsolescence markers (193 bytes)
+  pushing 3 obsolescence markers (* bytes) (glob)
+  0 obsolescence markers added
   [1]
 
   $ hg up --hidden -q .^ # 3
@@ -510,6 +513,8 @@
 
 #excluded 'whole rebase set is extinct and ignored.' message not in core
   $ hg rebase -b '3' -d 4 --traceback
+  rebasing 3:0d3f46688ccc "add obsol_c"
+  rebasing 8:159dfc9fa5d3 "add obsol_d''" (tip)
   2 new divergent changesets
   $ hg --hidden log -q -r 'successors(3)'
   4:725c380fe99b
@@ -538,7 +543,8 @@
   adding manifests
   adding file changes
   added 2 changesets with 1 changes to [12] files (re)
-  pushing 7 obsolescence markers (467 bytes)
+  pushing 7 obsolescence markers (* bytes) (glob)
+  3 obsolescence markers added
   $ hg up -q 10
   $ mkcommit "obsol_d'''"
   created new head
@@ -550,7 +556,8 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
-  pushing 8 obsolescence markers (531 bytes)
+  pushing 8 obsolescence markers (* bytes) (glob)
+  1 obsolescence markers added
   $ cd ..
 
 check bumped detection
@@ -814,18 +821,18 @@
 
 Simple rewrite
 
-  $ hg  --hidden debugobsoleterelevant 3
+  $ hg  --hidden debugobsolete --rev 3
   4538525df7e2b9f09423636c61ef63a4cb872a2d 0d3f46688ccc6e756c7e96cf64c391c411309597 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
 
 simple rewrite with a prune attached to it
 
-  $ hg debugobsoleterelevant 15
+  $ hg debugobsolete --rev 15
   0b1b6dd009c037985363e2290a0b579819f659db 705ab2a6b72e2cd86edb799ebe15f2695f86143e 0 (*) {'user': 'test'} (glob)
   33d458d86621f3186c40bfccd77652f4a122743e 0 {0b1b6dd009c037985363e2290a0b579819f659db} (*) {'user': 'test'} (glob)
 
 Transitive rewrite
 
-  $ hg --hidden debugobsoleterelevant 8
+  $ hg --hidden debugobsolete --rev 8
   909a0fb57e5d909f353d89e394ffd7e0890fec88 159dfc9fa5d334d7e03a0aecfc7f7ab4c3431fea 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
   95de7fc6918dea4c9c8d5382f50649794b474c4a 909a0fb57e5d909f353d89e394ffd7e0890fec88 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
   a7a6f2b5d8a54b81bc7aa2fba2934ad6d700a79e 95de7fc6918dea4c9c8d5382f50649794b474c4a 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- a/tests/test-prev-next.t
+++ b/tests/test-prev-next.t
@@ -1,11 +1,10 @@
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
 
-hg prev should move active bookmark
+hg prev -B should move active bookmark
   $ hg init
   $ touch a
   $ hg add a
@@ -16,31 +15,53 @@
   $ hg bookmark mark
   $ hg bookmarks
    * mark                      1:6e742c9127b3
-  $ hg prev
+  $ hg prev -B
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   [0] added a
   $ hg bookmarks
    * mark                      0:a154386e50d1
 
+hg next -B should move active bookmark
+  $ hg next -B
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  [1] added b
+  $ hg bookmarks
+   * mark                      1:6e742c9127b3
+
+hg prev should unset active bookmark
+  $ hg prev
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  [0] added a
+  $ hg bookmarks
+     mark                      1:6e742c9127b3
+
 hg next should move active bookmark
+  $ hg bookmark mark2
+  $ hg bookmarks
+     mark                      1:6e742c9127b3
+   * mark2                     0:a154386e50d1
   $ hg next
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   [1] added b
   $ hg bookmarks
-   * mark                      1:6e742c9127b3
+     mark                      1:6e742c9127b3
+     mark2                     0:a154386e50d1
+
+  $ hg bookmark -d mark2
+  $ hg bookmark mark
 
 hg next/prev should not interfere with inactive bookmarks
   $ touch c
   $ hg add c
   $ hg commit -m 'added c'
   $ hg bookmark -r2 no-move
-  $ hg prev
+  $ hg prev -B
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   [1] added b
   $ hg bookmarks
    * mark                      1:6e742c9127b3
      no-move                   2:4e26ef31f919
-  $ hg next
+  $ hg next -B
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   [2] added c
   $ hg bookmarks
@@ -49,13 +70,13 @@
   $ hg up 1
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   (leaving bookmark mark)
-  $ hg next
+  $ hg next -B
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   [2] added c
   $ hg bookmarks
      mark                      2:4e26ef31f919
      no-move                   2:4e26ef31f919
-  $ hg prev
+  $ hg prev -B
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   [1] added b
   $ hg bookmarks
--- a/tests/test-prune.t
+++ b/tests/test-prune.t
@@ -2,7 +2,6 @@
   > [ui]
   > logtemplate={rev}:{node|short}[{bookmarks}] ({obsolete}/{phase}) {desc|firstline}\n
   > [extensions]
-  > hgext.rebase=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
 
@@ -41,8 +40,9 @@
   $ hg prune --user blah --date '1979-12-15' .
   1 changesets pruned
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
-  (leaving bookmark BABAR)
   working directory now at 47d2a3944de8
+  $ hg bookmark
+   * BABAR                     3:47d2a3944de8
   $ hg debugobsolete
   9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
 
@@ -51,6 +51,7 @@
   $ hg prune 1
   1 changesets pruned
   2 new unstable changesets
+  $ hg book -i BABAR
   $ hg debugobsolete
   9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
   7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (*) {'user': 'test'} (glob)
@@ -250,7 +251,8 @@
   working directory now at d62d843c9a01
   bookmark 'todelete' deleted
   $ hg id -ir dcbb326fdec2
-  abort: unknown revision 'dcbb326fdec2'!
+  abort: hidden revision 'dcbb326fdec2'!
+  (use --hidden to access hidden revisions)
   [255]
   $ hg id -ir d62d843c9a01
   d62d843c9a01
@@ -262,7 +264,8 @@
   bookmark 'delete' deleted
   $ hg tag --remove --local c
   $ hg id -ir 6:2702dd0c91e7
-  abort: unknown revision '2702dd0c91e7'!
+  abort: hidden revision '6'!
+  (use --hidden to access hidden revisions)
   [255]
 
   $ hg debugobsstorestat
@@ -273,9 +276,7 @@
                 1 successors:         0
                 2 successors:         0
       more than 2 successors:         0
-  average meta length:               (27|71) (re)
       available  keys:
-                 date:                4
                  user:                4
   disconnected clusters:              4
           any known node:             4
@@ -289,3 +290,45 @@
           longer length:              1
           median length:              1
           mean length:                1
+
+  $ mkcommit rg
+  created new head
+  $ hg bookmark rg
+  $ hg up 10
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  (leaving bookmark rg)
+  $ hg bookmark r10
+  $ hg log -G
+  o  11:cd0038e05e1b[rg] (stable/draft) add rg
+  |
+  | @  10:ff43616e5d0f[B r10] (stable/draft) r10
+  |/
+  o  8:d62d843c9a01[] (stable/draft) r8
+  |
+  o  7:e7d9710d9fc6[] (stable/draft) r7
+  |
+  o    3:2b6d669947cd[] (stable/draft) r3
+  |\
+  | o  2:fa942426a6fd[] (stable/draft) r2
+  | |
+  o |  1:66f7d451a68b[] (stable/draft) r1
+  |/
+  o  0:1ea73414a91b[] (stable/draft) r0
+  
+  $ hg prune 11
+  1 changesets pruned
+  $ hg log -G
+  @  10:ff43616e5d0f[B r10] (stable/draft) r10
+  |
+  o  8:d62d843c9a01[rg] (stable/draft) r8
+  |
+  o  7:e7d9710d9fc6[] (stable/draft) r7
+  |
+  o    3:2b6d669947cd[] (stable/draft) r3
+  |\
+  | o  2:fa942426a6fd[] (stable/draft) r2
+  | |
+  o |  1:66f7d451a68b[] (stable/draft) r1
+  |/
+  o  0:1ea73414a91b[] (stable/draft) r0
+  
--- a/tests/test-sharing.t
+++ b/tests/test-sharing.t
@@ -11,8 +11,12 @@
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
   $ hg init public
-  $ hg clone -q public test-repo
-  $ hg clone -q test-repo dev-repo
+  $ hg clone public test-repo
+  updating to branch default
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg clone test-repo dev-repo
+  updating to branch default
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat >> test-repo/.hg/hgrc <<EOF
   > [phases]
   > publish = false
@@ -24,12 +28,26 @@
   $ echo 'my new project' > file1
   $ hg add file1
   $ hg commit -m'create new project'
-  $ hg push -q
+  $ hg push
+  pushing to $TESTTMP/public
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
 
 and pull that into the development repository::
 
   $ cd ../dev-repo
-  $ hg pull -q -u
+  $ hg pull -u
+  pulling from $TESTTMP/test-repo
+  requesting all changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  pull obsolescence markers
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 Let's commit a preliminary change and push it to ``test-repo`` for
 testing. ::
@@ -63,7 +81,16 @@
 Pull into dev-repo: obsolescence markers are transferred, but not
 the new obsolete changeset.
   $ cd ../dev-repo
-  $ hg pull -q -u
+  $ hg pull -u
+  pulling from $TESTTMP/test-repo
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  pull obsolescence markers
+  2 obsolescence markers added
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 Figure SG03
   $ hg shortlog --hidden -G
@@ -92,7 +119,8 @@
   
 Figure SG04 (test-repo)
   $ cd ../test-repo
-  $ hg update -q
+  $ hg update
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg shortlog --hidden -G
   @  4:de6151c48e1c  draft  fix bug 37
   |
@@ -112,7 +140,13 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
-  pushing 4 obsolescence markers (341 bytes)
+  pushing 4 obsolescence markers (* bytes) (glob)
+  4 obsolescence markers added
+
+Now that the fix is public, we cannot amend it any more.
+  $ hg amend -m 'fix bug 37'
+  abort: cannot amend public changesets
+  [255]
 
 Figure SG05
   $ hg -R ../public shortlog -G
@@ -120,193 +154,391 @@
   |
   o  0:0dc9c9f6ab91  public  create new project
   
-Oops, still have draft changesets in dev-repo.
-  $ cd ../dev-repo
-  $ hg shortlog -r 'draft()'
+Oops, still have draft changesets in dev-repo: push the phase change there.
+  $ hg -R ../dev-repo shortlog -r 'draft()'
   4:de6151c48e1c  draft  fix bug 37
-  $ hg pull -q -u
-  $ hg shortlog -r 'draft()'
+  $ hg push ../dev-repo
+  pushing to ../dev-repo
+  searching for changes
+  no changes found
+  pushing 4 obsolescence markers (* bytes) (glob)
+  0 obsolescence markers added
+  [1]
+  $ hg -R ../dev-repo shortlog -r 'draft()'
 
-Sharing by Alice and Bob to demonstrate bumped and divergent changesets.
-First, setup repos for them.
+Sharing with multiple developers: code review
 
   $ cd ..
-  $ hg clone -q public alice
-  $ hg clone -q public bob
+  $ hg clone public review
+  updating to branch default
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg clone review alice
+  updating to branch default
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg clone review bob
+  updating to branch default
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ cat >> review/.hg/hgrc <<EOF
+  > [phases]
+  > publish = false
+  > EOF
+
+Alice commits a draft bug fix, pushes to review repo.
+  $ cd alice
+  $ hg bookmark bug15
+  $ echo 'fix' > file2
+  $ hg commit -A -u alice -m 'fix bug 15 (v1)'
+  adding file2
+  $ hg push -B bug15
+  pushing to $TESTTMP/review
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  pushing 4 obsolescence markers (* bytes) (glob)
+  0 obsolescence markers added
+  exporting bookmark bug15
+  $ hg -R ../review bookmarks
+     bug15                     2:f91e97234c2b
+
+Alice receives code review, amends her fix, and goes out to lunch to
+await second review.
+  $ echo 'Fix.' > file2
+  $ hg amend -m 'fix bug 15 (v2)'
+  $ hg push
+  pushing to $TESTTMP/review
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  pushing 6 obsolescence markers (* bytes) (glob)
+  2 obsolescence markers added
+  updating bookmark bug15
+  $ hg -R ../review bookmarks
+     bug15                     3:cbdfbd5a5db2
+
+Figure SG06: review repository after Alice pushes her amended changeset.
+  $ hg --hidden -R ../review shortlog -G -r 1::
+  o  3:cbdfbd5a5db2  draft  fix bug 15 (v2)
+  |
+  | x  2:f91e97234c2b  draft  fix bug 15 (v1)
+  |/
+  @  1:de6151c48e1c  public  fix bug 37
+  |
+
+Bob commits a draft changeset, pushes to review repo.
+  $ cd ../bob
+  $ echo 'stuff' > file1
+  $ hg bookmark featureX
+  $ hg commit -u bob -m 'implement feature X (v1)'
+  $ hg push -B featureX
+  pushing to $TESTTMP/review
+  searching for changes
+  remote has heads on branch 'default' that are not known locally: cbdfbd5a5db2
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  pushing 4 obsolescence markers (* bytes) (glob)
+  0 obsolescence markers added
+  exporting bookmark featureX
+  $ hg -R ../review bookmarks
+     bug15                     3:cbdfbd5a5db2
+     featureX                  4:193657d1e852
+
+Bob receives first review, amends and pushes.
+  $ echo 'do stuff' > file1
+  $ hg amend -m 'implement feature X (v2)'
+  $ hg push
+  pushing to $TESTTMP/review
+  searching for changes
+  remote has heads on branch 'default' that are not known locally: cbdfbd5a5db2
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  pushing 6 obsolescence markers (* bytes) (glob)
+  2 obsolescence markers added
+  updating bookmark featureX
+
+Bob receives second review, amends, and pushes to public:
+this time, he's sure he got it right!
+  $ echo 'Do stuff.' > file1
+  $ hg amend -m 'implement feature X (v3)'
+  $ hg push ../public
+  pushing to ../public
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  pushing 8 obsolescence markers (* bytes) (glob)
+  4 obsolescence markers added
+  $ hg -R ../public bookmarks
+  no bookmarks set
+  $ hg push ../review
+  pushing to ../review
+  searching for changes
+  remote has heads on branch 'default' that are not known locally: cbdfbd5a5db2
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  pushing 8 obsolescence markers (* bytes) (glob)
+  2 obsolescence markers added
+  updating bookmark featureX
+  $ hg -R ../review bookmarks
+     bug15                     3:cbdfbd5a5db2
+     featureX                  6:540ba8f317e6
+
+Figure SG07: review and public repos after Bob implements feature X.
+  $ hg --hidden -R ../review shortlog -G -r 1::
+  o  6:540ba8f317e6  public  implement feature X (v3)
+  |
+  | x  5:0eb74a7b6698  draft  implement feature X (v2)
+  |/
+  | x  4:193657d1e852  draft  implement feature X (v1)
+  |/
+  | o  3:cbdfbd5a5db2  draft  fix bug 15 (v2)
+  |/
+  | x  2:f91e97234c2b  draft  fix bug 15 (v1)
+  |/
+  @  1:de6151c48e1c  public  fix bug 37
+  |
+  $ hg --hidden -R ../public shortlog -G -r 1::
+  o  2:540ba8f317e6  public  implement feature X (v3)
+  |
+  o  1:de6151c48e1c  public  fix bug 37
+  |
+
+How do things look in the review repo?
+  $ cd ../review
+  $ hg --hidden shortlog -G -r 1::
+  o  6:540ba8f317e6  public  implement feature X (v3)
+  |
+  | x  5:0eb74a7b6698  draft  implement feature X (v2)
+  |/
+  | x  4:193657d1e852  draft  implement feature X (v1)
+  |/
+  | o  3:cbdfbd5a5db2  draft  fix bug 15 (v2)
+  |/
+  | x  2:f91e97234c2b  draft  fix bug 15 (v1)
+  |/
+  @  1:de6151c48e1c  public  fix bug 37
+  |
+
+Meantime, Alice is back from lunch. While she was away, Bob approved
+her change, so now she can publish it.
+  $ cd ../alice
+  $ hg --hidden shortlog -G -r 1::
+  @  4:cbdfbd5a5db2  draft  fix bug 15 (v2)
+  |
+  | x  3:55dd95168a35  draft  temporary amend commit for f91e97234c2b
+  | |
+  | x  2:f91e97234c2b  draft  fix bug 15 (v1)
+  |/
+  o  1:de6151c48e1c  public  fix bug 37
+  |
+  $ hg outgoing -q ../public
+  4:cbdfbd5a5db2
+  $ hg push ../public
+  pushing to ../public
+  searching for changes
+  remote has heads on branch 'default' that are not known locally: 540ba8f317e6
+  abort: push creates new remote head cbdfbd5a5db2 with bookmark 'bug15'!
+  (pull and merge or see "hg help push" for details about pushing new heads)
+  [255]
+  $ hg pull ../public
+  pulling from ../public
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  pull obsolescence markers
+  4 obsolescence markers added
+  (run 'hg heads' to see heads, 'hg merge' to merge)
+  $ hg log -G -q -r 'head()'
+  o  5:540ba8f317e6
+  |
+  | @  4:cbdfbd5a5db2
+  |/
+  $ hg --hidden shortlog -G -r 1::
+  o  5:540ba8f317e6  public  implement feature X (v3)
+  |
+  | @  4:cbdfbd5a5db2  draft  fix bug 15 (v2)
+  |/
+  | x  3:55dd95168a35  draft  temporary amend commit for f91e97234c2b
+  | |
+  | x  2:f91e97234c2b  draft  fix bug 15 (v1)
+  |/
+  o  1:de6151c48e1c  public  fix bug 37
+  |
+
+Alice rebases her draft changeset on top of Bob's public changeset and
+publishes the result.
+  $ hg rebase -d 5
+  rebasing 4:cbdfbd5a5db2 "fix bug 15 (v2)" (bug15)
+  $ hg push ../public
+  pushing to ../public
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  pushing 11 obsolescence markers (* bytes) (glob)
+  3 obsolescence markers added
+  $ hg push ../review
+  pushing to ../review
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 0 changes to 1 files
+  pushing 11 obsolescence markers (* bytes) (glob)
+  1 obsolescence markers added
+  updating bookmark bug15
+
+Figure SG08: review and public changesets after Alice pushes.
+  $ hg --hidden -R ../review shortlog -G -r 1::
+  o  7:a06ec1bf97bd  public  fix bug 15 (v2)
+  |
+  o  6:540ba8f317e6  public  implement feature X (v3)
+  |
+  | x  5:0eb74a7b6698  draft  implement feature X (v2)
+  |/
+  | x  4:193657d1e852  draft  implement feature X (v1)
+  |/
+  | x  3:cbdfbd5a5db2  draft  fix bug 15 (v2)
+  |/
+  | x  2:f91e97234c2b  draft  fix bug 15 (v1)
+  |/
+  @  1:de6151c48e1c  public  fix bug 37
+  |
+  $ hg --hidden -R ../public shortlog -G -r 1::
+  o  3:a06ec1bf97bd  public  fix bug 15 (v2)
+  |
+  o  2:540ba8f317e6  public  implement feature X (v3)
+  |
+  o  1:de6151c48e1c  public  fix bug 37
+  |
+  $ cd ..
+
+Setup for "cowboy mode" shared mutable history (to illustrate divergent
+and bumped changesets).
+  $ rm -rf review alice bob
+  $ hg clone public alice
+  updating to branch default
+  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg clone public bob
+  updating to branch default
+  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat >> alice/.hg/hgrc <<EOF
   > [phases]
   > publish = false
   > EOF
   $ cp alice/.hg/hgrc bob/.hg/hgrc
 
-Alice commits a bug fix.
-  $ cd alice
-  $ echo 'fix' > file2
-  $ hg commit -q -A -u alice -m 'fix bug 15'
-
-Bob pulls and amends Alice's fix.
-  $ cd ../bob
-  $ hg pull -q -u ../alice
-  $ echo 'Fix.' > file2
-  $ hg amend -q -A -u bob -m 'fix bug 15 (amended)'
-
-Figure SG06: Bob's repository after amending Alice's fix.
-(Nothing new here; we could have seen this in the user guide.
-  $ hg --hidden shortlog -G
-  @  4:fe884dfac355  draft  fix bug 15 (amended)
-  |
-  | x  3:0376cac226f8  draft  temporary amend commit for e011baf925da
-  | |
-  | x  2:e011baf925da  draft  fix bug 15
-  |/
-  o  1:de6151c48e1c  public  fix bug 37
-  |
-  o  0:0dc9c9f6ab91  public  create new project
-  
-
-But in the meantime, Alice decides the fix is just fine and publishes it.
-  $ cd ../alice
-  $ hg push -q
-
-Which means that Bob now has an formerly obsolete changeset that is
-also public (2:6e83). As soon as he pulls its phase change, he's got
-trouble: the successors of that formerly obsolete changeset are
-bumped.
+Now we'll have Bob commit a bug fix that could still be improved::
 
-  $ cd ../bob
-  $ hg --hidden shortlog -r 'obsolete()'
-  2:e011baf925da  draft  fix bug 15
-  3:0376cac226f8  draft  temporary amend commit for e011baf925da
-  $ hg pull -q -u
-  1 new bumped changesets
-  $ hg --hidden shortlog -r 'obsolete()'
-  3:0376cac226f8  draft  temporary amend commit for e011baf925da
-  $ hg shortlog -r 'bumped()'
-  4:fe884dfac355  draft  fix bug 15 (amended)
-
-Figure SG07: Bob's repo with one bumped changeset (rev 4:c02d)
-  $ hg --hidden shortlog -G
-  @  4:fe884dfac355  draft  fix bug 15 (amended)
-  |
-  | x  3:0376cac226f8  draft  temporary amend commit for e011baf925da
-  | |
-  | o  2:e011baf925da  public  fix bug 15
-  |/
-  o  1:de6151c48e1c  public  fix bug 37
-  |
-  o  0:0dc9c9f6ab91  public  create new project
-  
-
-Bob gets out of trouble by evolving the repository.
-  $ hg evolve --all
-  recreate:[4] fix bug 15 (amended)
-  atop:[2] fix bug 15
-  computing new diff
-  committed as 227d860d9ad0
-  working directory is now at 227d860d9ad0
-
-Figure SG08
-  $ hg --hidden shortlog -G
-  @  5:227d860d9ad0  draft  bumped update to e011baf925da:
-  |
-  | x  4:fe884dfac355  draft  fix bug 15 (amended)
-  | |
-  +---x  3:0376cac226f8  draft  temporary amend commit for e011baf925da
-  | |
-  o |  2:e011baf925da  public  fix bug 15
-  |/
-  o  1:de6151c48e1c  public  fix bug 37
-  |
-  o  0:0dc9c9f6ab91  public  create new project
-  
-
-Throw away Bob's messy repo and start over.
-  $ cd ..
-  $ rm -rf bob
-  $ cp -rp alice bob
-
-Bob commits a pretty good fix that both he and Alice will amend,
-leading to divergence.
   $ cd bob
   $ echo 'pretty good fix' >> file1
   $ hg commit -u bob -m 'fix bug 24 (v1)'
+  $ hg shortlog -r .
+  4:2fe6c4bd32d0  draft  fix bug 24 (v1)
 
-Alice pulls Bob's fix and improves it.
+Since Alice and Bob are now in cowboy mode, Alice pulls Bob's draft
+changeset and amends it herself. ::
+
   $ cd ../alice
-  $ hg pull -q -u ../bob
-  $ echo 'better (alice)' >> file1
+  $ hg pull -u ../bob
+  pulling from ../bob
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  pull obsolescence markers
+  0 obsolescence markers added
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ echo 'better fix (alice)' >> file1
   $ hg amend -u alice -m 'fix bug 24 (v2 by alice)'
 
-Likewise, Bob amends his own fix. Now we have an obsolete changeset
-with two successors, although the successors are in different repos.
-  $ cd ../bob
-  $ echo 'better (bob)' >> file1
-  $ hg amend -u bob -m 'fix bug 24 (v2 by bob)'
+Bob implements a better fix of his own::
 
-Bob pulls from Alice's repo and discovers the trouble: divergent changesets!
-  $ hg pull -q -u ../alice
-  not updating: not a linear update
-  (merge or update --check to force update)
-  2 new divergent changesets
-  $ hg shortlog -r 'divergent()'
-  5:fc16901f4d7a  draft  fix bug 24 (v2 by bob)
-  6:694fd0f6b503  draft  fix bug 24 (v2 by alice)
+  $ cd ../bob
+  $ echo 'better fix (bob)' >> file1
+  $ hg amend -u bob -m 'fix bug 24 (v2 by bob)'
+  $ hg --hidden shortlog -G -r 3::
+  @  6:a360947f6faf  draft  fix bug 24 (v2 by bob)
+  |
+  | x  5:3466c7f5a149  draft  temporary amend commit for 2fe6c4bd32d0
+  | |
+  | x  4:2fe6c4bd32d0  draft  fix bug 24 (v1)
+  |/
+  o  3:a06ec1bf97bd  public  fix bug 15 (v2)
+  |
 
-Figure SG09
-  $ hg --hidden shortlog -G
-  o  6:694fd0f6b503  draft  fix bug 24 (v2 by alice)
+Bob discovers the divergence.
+  $ hg pull ../alice
+  pulling from ../alice
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files (+1 heads)
+  pull obsolescence markers
+  2 obsolescence markers added
+  (run 'hg heads' to see heads, 'hg merge' to merge)
+  2 new divergent changesets
+
+Figure SG09: multiple heads! divergence! oh my!
+  $ hg --hidden shortlog -G -r 3::
+  o  7:e3f99ce9d9cd  draft  fix bug 24 (v2 by alice)
   |
-  | @  5:fc16901f4d7a  draft  fix bug 24 (v2 by bob)
+  | @  6:a360947f6faf  draft  fix bug 24 (v2 by bob)
   |/
-  | x  4:162612d3335b  draft  temporary amend commit for fe81d904ed08
+  | x  5:3466c7f5a149  draft  temporary amend commit for 2fe6c4bd32d0
   | |
-  | x  3:fe81d904ed08  draft  fix bug 24 (v1)
+  | x  4:2fe6c4bd32d0  draft  fix bug 24 (v1)
   |/
-  o  2:e011baf925da  public  fix bug 15
+  o  3:a06ec1bf97bd  public  fix bug 15 (v2)
   |
-  o  1:de6151c48e1c  public  fix bug 37
-  |
-  o  0:0dc9c9f6ab91  public  create new project
-  
-Merge the trouble away.
-  $ hg merge --tool internal:local
+  $ hg --hidden shortlog -r 'successors(2fe6)'
+  6:a360947f6faf  draft  fix bug 24 (v2 by bob)
+  7:e3f99ce9d9cd  draft  fix bug 24 (v2 by alice)
+
+Use evolve to fix the divergence.
+  $ HGMERGE=internal:other hg evolve
+  merge:[6] fix bug 24 (v2 by bob)
+  with: [7] fix bug 24 (v2 by alice)
+  base: [4] fix bug 24 (v1)
   0 files updated, 1 files merged, 0 files removed, 0 files unresolved
-  (branch merge, don't forget to commit)
-  $ hg commit -m merge
-  $ hg shortlog -G
-  @    7:b1d30ba26e44  draft  merge
-  |\
-  | o  6:694fd0f6b503  draft  fix bug 24 (v2 by alice)
-  | |
-  o |  5:fc16901f4d7a  draft  fix bug 24 (v2 by bob)
-  |/
-  o  2:e011baf925da  public  fix bug 15
-  |
-  o  1:de6151c48e1c  public  fix bug 37
-  |
-  o  0:0dc9c9f6ab91  public  create new project
-  
+  working directory is now at 5ad6037c046c
   $ hg log -q -r 'divergent()'
-  5:fc16901f4d7a
-  6:694fd0f6b503
 
-# XXX hg evolve does not solve this trouble! bug in evolve?
-#Evolve the trouble away.
-#  $ hg evolve --all --tool=internal:local
-#  merge:[5] fix bug 24 (v2 by bob)
-#  with: [6] fix bug 24 (v2 by alice)
-#  base: [3] fix bug 24 (v1)
-#  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
-#  $ hg status
-#  $ hg shortlog -G
-#  o  6:694fd0f6b503  draft  fix bug 24 (v2 by alice)
-#  |
-#  | @  5:fc16901f4d7a  draft  fix bug 24 (v2 by bob)
-#  |/
-#  o  2:e011baf925da  public  fix bug 15
-#  |
-#  o  1:de6151c48e1c  public  fix bug 37
-#  |
-#  o  0:0dc9c9f6ab91  public  create new project
-#  
-#  $ hg --hidden shortlog -G
+Figure SG10: Bob's repository after fixing divergence.
+  $ hg --hidden shortlog -G -r 3::
+  @  9:5ad6037c046c  draft  fix bug 24 (v2 by bob)
+  |
+  | x  8:bcfc9a755ac3  draft  temporary amend commit for a360947f6faf
+  | |
+  +---x  7:e3f99ce9d9cd  draft  fix bug 24 (v2 by alice)
+  | |
+  | x  6:a360947f6faf  draft  fix bug 24 (v2 by bob)
+  |/
+  | x  5:3466c7f5a149  draft  temporary amend commit for 2fe6c4bd32d0
+  | |
+  | x  4:2fe6c4bd32d0  draft  fix bug 24 (v1)
+  |/
+  o  3:a06ec1bf97bd  public  fix bug 15 (v2)
+  |
+  $ hg --hidden shortlog -r 'precursors(9)'
+  6:a360947f6faf  draft  fix bug 24 (v2 by bob)
+  7:e3f99ce9d9cd  draft  fix bug 24 (v2 by alice)
+  $ cat file1
+  Do stuff.
+  pretty good fix
+  better fix (alice)
copy from tests/test-simple4server.t
copy to tests/test-simple4server-bundle2.t
--- a/tests/test-simple4server.t
+++ b/tests/test-simple4server-bundle2.t
@@ -7,8 +7,8 @@
   > allow_push = *
   > [phases]
   > publish = False
-  > [extensions]
-  > hgext.rebase=
+  > [experimental]
+  > bundle2-exp=True
   > EOF
 
   $ mkcommit() {
@@ -29,6 +29,7 @@
   no changes found
   updating to branch default
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ cat ./errors.log
   $ echo "[extensions]" >> ./client/.hg/hgrc
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> ./client/.hg/hgrc
   $ cp -r client other
@@ -50,6 +51,7 @@
   pulling from http://localhost:$HGPORT/
   searching for changes
   no changes found
+  $ cat ../errors.log
   $ hg pull -R ../other
   pulling from http://localhost:$HGPORT/
   requesting all changes
@@ -57,23 +59,24 @@
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files
-  pull obsolescence markers
   (run 'hg update' to get a working copy)
+  $ cat ../errors.log
   $ hg push -R ../other
   pushing to http://localhost:$HGPORT/
   searching for changes
   no changes found
   [1]
+  $ cat ../errors.log
 
 Capacity testing
 ===================
 
-  $ curl --silent http://localhost:$HGPORT/?cmd=hello
-  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0
-  $ curl --silent http://localhost:$HGPORT/?cmd=capabilities
-  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0 (no-eol)
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=hello
+  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=capabilities
+  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon (no-eol)
 
-  $ curl --silent "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
   bookmarks	
   namespaces	
   obsolete	
@@ -91,12 +94,14 @@
   remote: adding manifests
   remote: adding file changes
   remote: added 1 changesets with 1 changes to 1 files (+1 heads)
-  pushing 2 obsolescence markers (171 bytes)
+  remote: 2 new obsolescence markers
+  $ cat ../errors.log
   $ hg push
   pushing to http://localhost:$HGPORT/
   searching for changes
   no changes found
   [1]
+  $ cat ../errors.log
 
 Pull
 =============
@@ -108,13 +113,14 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to [12] files \(\+1 heads\) (re)
-  pull obsolescence markers
-  2 obsolescence markers added
-  (run 'hg heads' to see heads)
+  2 new obsolescence markers
+  (run 'hg heads' to see heads, 'hg merge' to merge)
+  $ cat ../errors.log
   $ hg -R ../other pull
   pulling from http://localhost:$HGPORT/
   searching for changes
   no changes found
+  $ cat ../errors.log
 
   $ cd ..
 
@@ -122,15 +128,15 @@
 ===========================================
 (used by bitbucket to select which repo use evolve)
 
-  $ curl --silent "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
   bookmarks	
   namespaces	
   obsolete	
   phases	
-  $ curl --silent http://localhost:$HGPORT/?cmd=hello
-  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0
-  $ curl --silent http://localhost:$HGPORT/?cmd=capabilities
-  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0 (no-eol)
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=hello
+  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=capabilities
+  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon (no-eol)
 
   $ echo '[__temporary__]' >> server/.hg/hgrc
   $ echo 'advertiseobsolete=False' >> server/.hg/hgrc
@@ -138,26 +144,26 @@
   $ hg serve -R server -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
   $ cat hg.pid >> $DAEMON_PIDS
 
-  $ curl --silent "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
   bookmarks	
   namespaces	
   phases	
-  $ curl --silent http://localhost:$HGPORT/?cmd=hello
-  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024
-  $ curl --silent http://localhost:$HGPORT/?cmd=capabilities
-  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 (no-eol)
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=hello
+  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=capabilities
+  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 (no-eol)
 
   $ echo 'advertiseobsolete=True' >> server/.hg/hgrc
   $ $TESTDIR/killdaemons.py
   $ hg serve -R server -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
   $ cat hg.pid >> $DAEMON_PIDS
 
-  $ curl --silent "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
   bookmarks	
   namespaces	
   obsolete	
   phases	
-  $ curl --silent http://localhost:$HGPORT/?cmd=hello
-  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0
-  $ curl --silent http://localhost:$HGPORT/?cmd=capabilities
-  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0 (no-eol)
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=hello
+  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=capabilities
+  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon (no-eol)
--- a/tests/test-simple4server.t
+++ b/tests/test-simple4server.t
@@ -8,7 +8,6 @@
   > [phases]
   > publish = False
   > [extensions]
-  > hgext.rebase=
   > EOF
 
   $ mkcommit() {
@@ -29,6 +28,7 @@
   no changes found
   updating to branch default
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ cat ./errors.log
   $ echo "[extensions]" >> ./client/.hg/hgrc
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> ./client/.hg/hgrc
   $ cp -r client other
@@ -50,6 +50,7 @@
   pulling from http://localhost:$HGPORT/
   searching for changes
   no changes found
+  $ cat ../errors.log
   $ hg pull -R ../other
   pulling from http://localhost:$HGPORT/
   requesting all changes
@@ -59,21 +60,23 @@
   added 2 changesets with 2 changes to 2 files
   pull obsolescence markers
   (run 'hg update' to get a working copy)
+  $ cat ../errors.log
   $ hg push -R ../other
   pushing to http://localhost:$HGPORT/
   searching for changes
   no changes found
   [1]
+  $ cat ../errors.log
 
 Capacity testing
 ===================
 
-  $ curl --silent http://localhost:$HGPORT/?cmd=hello
-  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0
-  $ curl --silent http://localhost:$HGPORT/?cmd=capabilities
-  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0 (no-eol)
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=hello
+  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=capabilities
+  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon (no-eol)
 
-  $ curl --silent "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
   bookmarks	
   namespaces	
   obsolete	
@@ -91,12 +94,14 @@
   remote: adding manifests
   remote: adding file changes
   remote: added 1 changesets with 1 changes to 1 files (+1 heads)
-  pushing 2 obsolescence markers (171 bytes)
+  pushing 2 obsolescence markers (* bytes) (glob)
+  $ cat ../errors.log
   $ hg push
   pushing to http://localhost:$HGPORT/
   searching for changes
   no changes found
   [1]
+  $ cat ../errors.log
 
 Pull
 =============
@@ -111,10 +116,12 @@
   pull obsolescence markers
   2 obsolescence markers added
   (run 'hg heads' to see heads)
+  $ cat ../errors.log
   $ hg -R ../other pull
   pulling from http://localhost:$HGPORT/
   searching for changes
   no changes found
+  $ cat ../errors.log
 
   $ cd ..
 
@@ -122,15 +129,15 @@
 ===========================================
 (used by bitbucket to select which repo use evolve)
 
-  $ curl --silent "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
   bookmarks	
   namespaces	
   obsolete	
   phases	
-  $ curl --silent http://localhost:$HGPORT/?cmd=hello
-  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0
-  $ curl --silent http://localhost:$HGPORT/?cmd=capabilities
-  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0 (no-eol)
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=hello
+  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=capabilities
+  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon (no-eol)
 
   $ echo '[__temporary__]' >> server/.hg/hgrc
   $ echo 'advertiseobsolete=False' >> server/.hg/hgrc
@@ -138,26 +145,26 @@
   $ hg serve -R server -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
   $ cat hg.pid >> $DAEMON_PIDS
 
-  $ curl --silent "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
   bookmarks	
   namespaces	
   phases	
-  $ curl --silent http://localhost:$HGPORT/?cmd=hello
-  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024
-  $ curl --silent http://localhost:$HGPORT/?cmd=capabilities
-  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 (no-eol)
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=hello
+  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=capabilities
+  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 (no-eol)
 
   $ echo 'advertiseobsolete=True' >> server/.hg/hgrc
   $ $TESTDIR/killdaemons.py
   $ hg serve -R server -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
   $ cat hg.pid >> $DAEMON_PIDS
 
-  $ curl --silent "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
   bookmarks	
   namespaces	
   obsolete	
   phases	
-  $ curl --silent http://localhost:$HGPORT/?cmd=hello
-  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0
-  $ curl --silent http://localhost:$HGPORT/?cmd=capabilities
-  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_b2x_obsmarkers_0 (no-eol)
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=hello
+  capabilities: lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon
+  $ wget -q -O - http://localhost:$HGPORT/?cmd=capabilities
+  lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch stream bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Alistkeys%0Aobsmarkers%3DV0%2CV1%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 _evoext_pushobsmarkers_0 _evoext_pullobsmarkers_0 _evoext_obshash_0 _evoext_obshash_1 _evoext_getbundle_obscommon (no-eol)
--- a/tests/test-stabilize-conflict.t
+++ b/tests/test-stabilize-conflict.t
@@ -8,6 +8,7 @@
   > [ui]
   > interactive=false
   > merge=internal:merge
+  > promptecho = True
   > [defaults]
   > amend=-d "0 0"
   > [merge-tools]
@@ -15,7 +16,6 @@
   > touch.gui=true
   > touch.args=babar
   > [extensions]
-  > hgext.rebase=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
 
@@ -130,7 +130,7 @@
   warning: conflicts during merge.
   merging babar incomplete! (edit conflicts, then use 'hg resolve --mark')
   evolve failed!
-  fix conflict and run "hg evolve --continue"
+  fix conflict and run "hg evolve --continue" or use "hg update -C" to abort
   abort: unresolved merge conflicts (see hg help resolve)
   [255]
   $ hg resolve -l
@@ -143,7 +143,7 @@
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     babar count up to ten
   |
-  | @  changeset:   5:71c18f70c34f
+  | o  changeset:   5:71c18f70c34f
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     babar count up to fifteen
@@ -167,7 +167,7 @@
   $ hg resolve --all -m
   (no more unresolved files)
   $ hg evolve --continue
-  grafting revision 5
+  grafting 5:71c18f70c34f "babar count up to fifteen"
   $ hg resolve -l
   $ hg log -G
   @  changeset:   8:1836b91c6c1d
@@ -217,9 +217,10 @@
   atop:[10] babar count up to ten
   merging babar
    output file babar appears unchanged
-  was merge successful (yn)? merging babar failed!
+  was merge successful (yn)? n
+  merging babar failed!
   evolve failed!
-  fix conflict and run "hg evolve --continue"
+  fix conflict and run "hg evolve --continue" or use "hg update -C" to abort
   abort: unresolved merge conflicts (see hg help resolve)
   [255]
   $ hg resolve -l
@@ -232,7 +233,7 @@
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     babar count up to ten
   |
-  | @  changeset:   8:1836b91c6c1d
+  | o  changeset:   8:1836b91c6c1d
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     babar count up to fifteen
--- a/tests/test-stabilize-order.t
+++ b/tests/test-stabilize-order.t
@@ -2,7 +2,6 @@
   > [defaults]
   > amend=-d "0 0"
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
@@ -70,7 +69,10 @@
   hg rebase -r 22619daeed78 -d 005fe5914f78
   resolving manifests
   getting b
+  committing files:
   b
+  committing manifest
+  committing changelog
   working directory is now at bede829dd2d3
   $ glog
   @  8:bede829dd2d3@default(draft) addb
@@ -99,7 +101,10 @@
   getting b
   resolving manifests
   getting c
+  committing files:
   c
+  committing manifest
+  committing changelog
   working directory is now at 65095d7d0dd5
   $ hg debugobsolete > successors.new
   $ diff -u successors.old successors.new
@@ -160,7 +165,10 @@
   getting b
   resolving manifests
   getting c
+  committing files:
   c
+  committing manifest
+  committing changelog
   working directory is now at e99ecf51c867
   $ glog
   @  12:e99ecf51c867@default(draft) addc
--- a/tests/test-stabilize-result.t
+++ b/tests/test-stabilize-result.t
@@ -32,6 +32,12 @@
   $ hg evolve -v --confirm
   move:[2] changea
   atop:[4] changea
+  perform evolve? [Ny] n
+  abort: evolve aborted by user
+  [255]
+  $ echo y | hg evolve -v --confirm --config ui.interactive=True
+  move:[2] changea
+  atop:[4] changea
   perform evolve? [Ny] y
   hg rebase -r cce2c55b8965 -d fb9d051ec0a4
   resolving manifests
@@ -79,7 +85,7 @@
   warning: conflicts during merge.
   merging a incomplete! (edit conflicts, then use 'hg resolve --mark')
   evolve failed!
-  fix conflict and run "hg evolve --continue"
+  fix conflict and run "hg evolve --continue" or use "hg update -C" to abort
   abort: unresolved merge conflicts (see hg help resolve)
   [255]
   $ hg revert -r 'unstable()' a
@@ -92,13 +98,13 @@
   +a
   +newer a
   $ hg evolve --continue
-  grafting revision 5
-  abort: unresolved merge conflicts (see hg help resolve)
+  grafting 5:3655f0f50885 "newer a"
+  abort: unresolved merge conflicts (see "hg help resolve")
   [255]
   $ hg resolve -m a
   (no more unresolved files)
   $ hg evolve --continue
-  grafting revision 5
+  grafting 5:3655f0f50885 "newer a"
 
 Stabilize latecomer with different parent
 =========================================
@@ -126,6 +132,7 @@
 Get a successors of 8 on it
 
   $ hg grab 8
+  rebasing 8:1cf0aacfd363 "newer a"
   ? files updated, 0 files merged, 0 files removed, 0 files unresolved (glob)
 
 Add real change to the successors
@@ -161,6 +168,12 @@
   $ hg evolve --any --confirm
   recreate:[12] newer a
   atop:[8] newer a
+  perform evolve? [Ny] n
+  abort: evolve aborted by user
+  [255]
+  $ echo y | hg evolve --any --confirm --config ui.interactive=True
+  recreate:[12] newer a
+  atop:[8] newer a
   perform evolve? [Ny] y
   rebasing to destination parent: 66719795a494
   computing new diff
@@ -235,7 +248,14 @@
 
 Stabilize it
 
-  $ hg evolve -qn --traceback --confirm
+  $ hg evolve -qn --confirm
+  merge:[19] More addition
+  with: [17] More addition
+  base: [15] More addition
+  perform evolve? [Ny] n
+  abort: evolve aborted by user
+  [255]
+  $ echo y | hg evolve -qn --confirm --config ui.interactive=True
   merge:[19] More addition
   with: [17] More addition
   base: [15] More addition
@@ -255,9 +275,15 @@
   merging a
   0 files updated, 1 files merged, 0 files removed, 0 files unresolved
   amending changeset eacc9c8240fe
+  committing files:
   a
+  committing manifest
+  committing changelog
   copying changeset 283ccd10e2b8 to 7bc2f5967f5e
+  committing files:
   a
+  committing manifest
+  committing changelog
   committed changeset 21:f344982e63c4
   working directory is now at f344982e63c4
   $ hg st
@@ -312,18 +338,20 @@
   $ echo 'gotta break' >> a
   $ hg amend
   2 new divergent changesets
+# reamend so that the case is not the first precursor.
+  $ hg amend -m "More addition (2)"
   $ hg phase 'divergent()'
   21: draft
-  23: draft
+  24: draft
   $ hg evolve -qn
-  hg update -c 36e188246d67 &&
+  hg update -c 0b336205a5d0 &&
   hg merge f344982e63c4 &&
-  hg commit -m "auto merge resolving conflict between 36e188246d67 and f344982e63c4"&&
+  hg commit -m "auto merge resolving conflict between 0b336205a5d0 and f344982e63c4"&&
   hg up -C 3932c176bbaa &&
   hg revert --all --rev tip &&
-  hg commit -m "`hg log -r 36e188246d67 --template={desc}`";
+  hg commit -m "`hg log -r 0b336205a5d0 --template={desc}`";
   $ hg evolve
-  merge:[23] More addition
+  merge:[24] More addition (2)
   with: [21] More addition
   base: [15] More addition
   merging a
--- a/tests/test-touch.t
+++ b/tests/test-touch.t
@@ -86,3 +86,26 @@
   o  4:[0-9a-f]{12} a (re)
   
 
+check move data kept after rebase on touch:
+
+  $ touch gna1
+  $ hg commit -Am gna1
+  adding gna1
+  $ hg mv gna1 gna2
+  $ hg commit -m move
+  $ hg st -C --change=tip
+  A gna2
+    gna1
+  R gna1
+  $ hg up .^
+  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
+
+  $ hg touch
+  1 new unstable changesets
+
+  $ hg rebase -s 11 -d 12
+  rebasing 11:* "move" (glob)
+  $ hg st -C --change=tip
+  A gna2
+    gna1
+  R gna1
--- a/tests/test-tutorial.t
+++ b/tests/test-tutorial.t
@@ -243,7 +243,9 @@
 
   $ hg diff
   $ hg rebase --dest 9ca060c80d74 --source 4d5dc8187023
+  rebasing 1:4d5dc8187023 "adding condiment"
   merging shopping
+  rebasing 4:9d0363b81950 "adding fruit"
   merging shopping
 
 
@@ -348,6 +350,7 @@
   $ hg up 'p1(10b8aeaa8cc8)' # going on "bathroom stuff" parent
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg grab fac207dec9f5 # moving "SPAM SPAM" to the working directory parent
+  rebasing 10:fac207dec9f5 "SPAM SPAM" (tip)
   merging shopping
   ? files updated, 0 files merged, 0 files removed, 0 files unresolved (glob)
   $ hg log -G
@@ -403,11 +406,13 @@
   adding manifests
   adding file changes
   added 3 changesets with 3 changes to 1 files
-  pushing 6 obsolescence markers (487 bytes)
+  pushing 6 obsolescence markers (* bytes) (glob)
+  6 obsolescence markers added
 
 for simplicity sake we get the bathroom change in line again
 
   $ hg grab 10b8aeaa8cc8
+  rebasing 9:10b8aeaa8cc8 "bathroom stuff"
   merging shopping
   ? files updated, 0 files merged, 0 files removed, 0 files unresolved (glob)
   $ hg phase --draft .
@@ -511,6 +516,7 @@
 
   $ cd ../remote
   $ hg -R ../local/ showconfig phases
+  [1]
 
 the localrepo does not have any specific configuration for `phases.publish`. It
 is ``true`` by default.
@@ -732,7 +738,8 @@
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 1 files (+1 heads)
-  pushing 10 obsolescence markers (803 bytes)
+  pushing 10 obsolescence markers (* bytes) (glob)
+  3 obsolescence markers added
 
 remote get a warning that current working directory is based on an obsolete changeset
 
--- a/tests/test-uncommit.t
+++ b/tests/test-uncommit.t
@@ -1,6 +1,5 @@
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
@@ -347,6 +346,9 @@
   $ hg cat b --rev 0
   b: no such file in rev 07f494440405
   [1]
+  $ hg uncommit --rev . b
+  abort: cannot uncommit to parent changeset
+  [255]
   $ hg uncommit --rev 0 b
   $ hg cat b --rev .
   b: no such file in rev 5b27f6b17da2
--- a/tests/test-userguide.t
+++ b/tests/test-userguide.t
@@ -18,7 +18,7 @@
 example 2: unsafe amend with plain vanilla Mercurial: the original
 commit is stripped
   $ hg commit --amend -u alice -d '1 0' -m 'implement feature Y'
-  saved backup bundle to $TESTTMP/t/.hg/strip-backup/6e725fd2be6f-amend-backup.hg (glob)
+  saved backup bundle to $TESTTMP/t/.hg/strip-backup/6e725fd2be6f-42cc74d4-amend-backup.hg (glob)
   $ hg log -r 23fe4ac6d3f1
   abort: unknown revision '23fe4ac6d3f1'!
   [255]
@@ -38,7 +38,8 @@
   $ echo 'tweak feature Y' >> file1.c
   $ hg commit --amend -u alice -d '2 0' -m 'implement feature Y'
   $ hg shortlog -q -r fe0ecd3bd2a4
-  abort: unknown revision 'fe0ecd3bd2a4'!
+  abort: hidden revision 'fe0ecd3bd2a4'!
+  (use --hidden to access hidden revisions)
   [255]
   $ hg --hidden shortlog -G
   @  3:934359450037  draft  implement feature Y
copy from tests/test-wireproto.t
copy to tests/test-wireproto-bundle1.t
--- a/tests/test-wireproto.t
+++ b/tests/test-wireproto-bundle1.t
@@ -7,7 +7,6 @@
   > [phases]
   > publish = False
   > [extensions]
-  > hgext.rebase=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
 
@@ -71,7 +70,8 @@
   remote: adding manifests
   remote: adding file changes
   remote: added 1 changesets with 1 changes to 1 files (+1 heads)
-  pushing 2 obsolescence markers (171 bytes)
+  pushing 2 obsolescence markers (* bytes) (glob)
+  remote: 2 obsolescence markers added
   $ hg push
   pushing to ssh://user@dummy/server
   searching for changes
--- a/tests/test-wireproto.t
+++ b/tests/test-wireproto.t
@@ -2,12 +2,14 @@
   $ cat >> $HGRCPATH <<EOF
   > [defaults]
   > amend=-d "0 0"
+  > [experimental]
+  > obsmarkers-exchange-debug=true
+  > bundle2-exp=true
   > [ui]
   > ssh=python "$TESTDIR/dummyssh"
   > [phases]
   > publish = False
   > [extensions]
-  > hgext.rebase=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
 
@@ -51,7 +53,6 @@
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files
-  pull obsolescence markers
   (run 'hg update' to get a working copy)
   $ hg push -R ../other
   pushing to ssh://user@dummy/server
@@ -71,7 +72,8 @@
   remote: adding manifests
   remote: adding file changes
   remote: added 1 changesets with 1 changes to 1 files (+1 heads)
-  pushing 2 obsolescence markers (171 bytes)
+  remote: obsmarker-exchange: 139 bytes received
+  remote: 2 new obsolescence markers
   $ hg push
   pushing to ssh://user@dummy/server
   searching for changes
@@ -88,13 +90,63 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to [12] files \(\+1 heads\) (re)
-  pull obsolescence markers
-  2 obsolescence markers added
-  (run 'hg heads' to see heads)
+  obsmarker-exchange: 139 bytes received
+  2 new obsolescence markers
+  (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg -R ../other pull
   pulling from ssh://user@dummy/server
   searching for changes
   no changes found
 
+Test some markers discovery
+===========================
+
+  $ echo c > C
+  $ hg add C
+  $ hg commit -m C
+  $ echo c >> C
+  $ hg amend
+  $ hg push
+  pushing to ssh://user@dummy/server
+  searching for changes
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files
+  remote: obsmarker-exchange: 139 bytes received
+  remote: 2 new obsolescence markers
+  $ hg -R ../other pull
+  pulling from ssh://user@dummy/server
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  obsmarker-exchange: 139 bytes received
+  2 new obsolescence markers
+  (run 'hg update' to get a working copy)
+
+some common hidden
+
+  $ hg touch .
+  $ hg push
+  pushing to ssh://user@dummy/server
+  searching for changes
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 0 changes to 1 files (+1 heads)
+  remote: obsmarker-exchange: 208 bytes received
+  remote: 1 new obsolescence markers
+  $ hg -R ../other pull
+  pulling from ssh://user@dummy/server
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 0 changes to 3 files (+1 heads)
+  obsmarker-exchange: 208 bytes received
+  1 new obsolescence markers
+  (run 'hg heads' to see heads, 'hg merge' to merge)
+
   $ cd ..
-