merge with inactive compat branch stable
authorPierre-Yves David <pierre-yves.david@fb.com>
Tue, 23 Jun 2015 16:47:24 -0700
branchstable
changeset 1434 c0ac4fccee33
parent 1433 b0a5ce178da6 (diff)
parent 1431 4b156f4c1fbe (current diff)
child 1437 8a20b2774a65
merge with inactive compat branch
--- a/.hgtags	Tue Jun 23 16:45:55 2015 -0700
+++ b/.hgtags	Tue Jun 23 16:47:24 2015 -0700
@@ -22,3 +22,17 @@
 83882f2fbecba0b7e7f7e5d490b57db93bd7fa22 3.3.0
 fc04758ea9f549684989ee673b04d9724756dc85 3.3.1
 a03ea39aca2a66ea36817512d586dcbc99dbfe9b 3.3.2
+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/MANIFEST.in	Tue Jun 23 16:45:55 2015 -0700
+++ b/MANIFEST.in	Tue Jun 23 16:47:24 2015 -0700
@@ -8,10 +8,14 @@
 include hgext/__init__.py
 include hgext/evolve.py
 include hgext/pushexperiment.py
+include hgext/simple4server.py
 include setup.py
 include README
 include COPYING
 include tests/*.t
 include tests/*.py
+include tests/_exc-util.sh
+include tests/dummyssh
 exclude tests/test-oldconvert.t
 exclude tests/test-qsync.t
+exclude tests/test-drop.t
--- a/README	Tue Jun 23 16:45:55 2015 -0700
+++ b/README	Tue Jun 23 16:47:24 2015 -0700
@@ -21,32 +21,148 @@
 We recommend reading the documentation first. An online version is
 available here:
 
-    http://hg-lab.logilab.org/doc/mutable-history/html/
+    http://evolution.experimentalworks.net/doc/
 
 Or see the ``doc/`` directory for a local copy.
 
 Contribute
 ==========
 
-The simplest way to contribute is to issue a pull request on Bitbucket
-(https://bitbucket.org/marmoute/mutable-history). Please don't forget
-to update and run the tests when you fix a bug or add a feature. To
-run the tests:
+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>'
+
+See also
+http://mercurial.selenic.com/wiki/ContributingChanges#Patch_descriptions
+for guidelines on the patch description.
+
+Please don't forget to update and run the tests when you fix a bug or
+add a feature. To run the tests:
 
     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-lab.logilab.org/wip/mutable-history/
-
-Be sure to check latest draft changeset before submitting new changesets.
-
 
 Changelog
 =========
 
+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
+- properly skip marker creating if patch apply cleanly
+- 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
+- amend: add -U/--current-user option
+- evolve: add a --tool option
+- evolve: add a --confirm option
+- mark "commit -o", "graft -o" and "graft -O" as deprecated since they are
+  unlikely to eventually make it into core.
+- push obsmarkers and phases in the same transaction than changesets
+  (when using hg >= 3.1 and bundle2-exp is enabled)
+- hide message about the obsolescence marker exchange behind a
+  `experimental.verbose-obsolescence-exchange` variable (default to False).
+
+4.0.1 -- 2014-08-08
+
+- createmarkers() accept an iterable (for compat with other extension)
+
+4.0.0 -- 2014-06-03
+
+- require Mercurial version 3.0.1 or above
+- some compatibility fixes with future 3.1.0
+- deprecated `gup` and `gdown` in favor of prev and next
+- record parent of pruned parent at prune time
+- added a `debugobsstorestat` command to gather data on obsmarker content.
+- added a `debugrecordpruneparents` command to upgrade existing prune marker
+  with parent information. Please run it once per repo after upgrading.
+- improvement to obsolescence marker exchange:
+  - added progress when pushing obsmarkers
+  - added multiple output during obsolescence markers exchange
+  - only push markers relevant to pushed subset
+  - add a new experimental way to exchange marker (when server support):
+    - added progress when pulling obsmarkers
+    - only pull markers relevant to pulled subset
+    - avoid exchanging common markers in some case
+    - use bundle2 as transport when available.
+ - add a hook related to the new commands
+
 3.3.2 -- 2014-05-14
 
 - fix a bug where evolve were creating changeset with 2 parents on windows
@@ -197,7 +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	Tue Jun 23 16:45:55 2015 -0700
+++ b/debian/changelog	Tue Jun 23 16:47:24 2015 -0700
@@ -1,8 +1,54 @@
-mercurial-evolve (3.2.0-1) UNRELEASED; urgency=low
+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.
 
- -- Julien Cristau <julien.cristau@logilab.fr>  Tue, 04 Jun 2013 17:28:02 +0200
+ -- 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
+
+ -- Pierre-Yves David <pyd@marginatus.alto.octopoid.net>  Fri, 08 Aug 2014 23:15:11 -0700
+
+mercurial-evolve (4.0.1-1) unstable; urgency=medium
+
+  * new upstream release
+
+ -- Pierre-Yves David <pyd@marginatus.alto.octopoid.net>  Fri, 08 Aug 2014 15:50:09 -0700
+
+mercurial-evolve (4.0.0-1) unstable; urgency=low
+
+  [ Julien Cristau ]
+  * New upstream release.
+
+  [ Pierre-Yves David ]
+  * new upstream release
+
+ -- Pierre-Yves David <pyd@marginatus.alto.octopoid.net>  Fri, 08 Aug 2014 15:48:16 -0700
 
 mercurial-evolve (3.1.0-1) UNRELEASED; urgency=low
 
--- a/debian/control	Tue Jun 23 16:45:55 2015 -0700
+++ b/debian/control	Tue Jun 23 16:47:24 2015 -0700
@@ -7,12 +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,
+ wget,
 Python-Version: >= 2.6
 Homepage: https://bitbucket.org/marmoute/mutable-history
 
@@ -21,7 +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/docs	Tue Jun 23 16:45:55 2015 -0700
+++ b/debian/docs	Tue Jun 23 16:47:24 2015 -0700
@@ -1,1 +1,2 @@
 html
+README
--- a/debian/rules	Tue Jun 23 16:45:55 2015 -0700
+++ b/debian/rules	Tue Jun 23 16:47:24 2015 -0700
@@ -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:
@@ -17,11 +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
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/debian/test-blacklist	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,3 @@
+test-drop.t
+test-simple4server.t
+tests/test-simple4server-bundle2.t
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/docs/concepts.rst	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,223 @@
+.. Copyright 2014 Greg Ward <greg@gerg.ca>
+
+----------------
+Evolve: Concepts
+----------------
+
+Getting the most out of software requires an accurate understanding of
+the concepts underlying it. For example, you cannot use Mercurial to
+its full potential without understanding the DAG (directed acyclic
+graph) of changesets and the meaning of parent/child relationships
+between nodes in that graph. Mercurial with changeset evolution adds
+some additional concepts to the graph of changesets. Understanding
+those concepts will make you an informed and empowered user of
+``evolve``.
+
+.. note:: This document contains math! If you have a pathological fear
+          of set theory and the associated notation, you might be
+          better off just reading the `user guide`_. But if you
+          appreciate the theoretical rigour underlying core Mercurial,
+          you will be happy to know that it continues right into
+          changeset evolution.
+
+.. note:: This document is incomplete! (The formatting of the math
+          isn't quite right yet, and the diagrams are missing for
+          malformatted.)
+
+This document follows standard set theory notation::
+
+  x ∈ A: x is a member of A
+
+  A ∪ B: union of A and B: { x | x ∈ A or x ∈ B }
+
+  A ∖ B: set difference: { x | x ∈ A and x ∉ B }
+
+  A ⊇ B: superset: if x ∈ B, then x ∈ A
+
+.. _`user guide`: user-guide.html
+
+Phases
+------
+
+First, every changeset in a Mercurial repository (since 2.3) has a
+*phase*. Phases are independent of ``evolve`` and they affect
+Mercurial usage with or without changeset evolution. However, they
+were implemented in order to support evolution, and are a critical
+foundation of ``evolve``.
+
+Phases are strictly ordered:
+
+  secret > draft > public
+
+Changesets generally only move from a higher phase to a lower phase.
+Typically, changesets start life in *draft* phase, and move to
+*public* phase when they are pushed to a public repository. (You can
+set the default phase of new commits in Mercurial configuration.)
+
+The purpose of phases is to prevent modifying published history.
+``evolve`` will therefore only let you rewrite changesets in one of
+the two *mutable* phases (secret or draft).
+
+Run ``hg help phases`` for more information on phases.
+
+Obsolete changesets
+-------------------
+
+*Obsolescence* is they key concept at the heart of changeset
+evolution. Everything else in this document depends on understanding
+obsolescence. So: what does it mean for a changeset to be obsolete?
+
+In implementation terms, there is an *obsolescence marker* associated
+with changesets: every changeset is either obsolete or not.
+
+The simplest way that a changeset becomes obsolete is by *pruning* it.
+The ``hg prune`` command simply marks the specified changesets
+obsolete, as long as they are mutable.
+
+More commonly, a changeset *A* becomes obsolete by *amending* it.
+Amendment creates a new changeset *A'* that replaces *A*, which is now
+obsolete. *A'* is the successor of *A*, and *A* the predecessor of *A'*:
+
+  [diagram: A and A' with pred/succ edge]
+
+The predecessor/successor relationship forms an additional
+*obsolescence graph* overlaid on top of the traditional DAG formed by
+changesets and their parent/child relationships. In fact, the
+obsolescence graph is second-order version control. Where the
+traditional parent/child DAG tracks changes to your source code, the
+obsolescence graph tracks changes to your changesets. It tracks the
+evolution of your changesets.
+
+(If you prefer a calculus metaphor to set theory, it might help to
+think of the traditional parent/child DAG as the first derivative of
+your source code, and the obsolescence DAG as the second derivative.)
+
+Troubled changesets (unstable, bumped, divergent)
+-------------------------------------------------
+
+Evolving history can introduce problems that need to be solved. For
+example, if you prune a changeset *P* but not its descendants, those
+descendants are now on thin ice. To push a changeset to another
+repository *R*, all of its ancestors must be present in *R* or pushed
+at the same time. But Mercurial does not push obsolete changesets like
+*P*, so it cannot push the descendants of *P*. Any non-obsolete
+changeset that is a descendant of an obsolete changeset is said to be
+*unstable*.
+
+  [diagram: obsolete cset with non-obsolete descendant]
+
+Another sort of trouble occurs when two developers, Alice and Bob,
+collaborate via a shared non-publishing repository. (This is how
+developers can safely `share mutable history`_.) Say Alice and Bob
+both start the day with changeset *C* in *draft* phase. If Alice
+pushes *C* to their public repository, then it is now published and
+therefore immutable. But Bob is working from a desert island and
+cannot pull this change in *C*'s phase. For Bob, *C* is still in draft
+phase and therefore mutable. So Bob amends *C*, which marks it
+obsolete and replaces it with *C'*. When he is back online and pulls
+from the public repository, Mercurial learns that *C* is public, which
+means it cannot be obsolete. We say that *C'* is *bumped*, since it is
+the successor of a public changeset.
+
+.. _`share mutable history`: sharing.html
+
+(Incidentally, the terminology here comes from airline overbooking: if
+two people have bought tickets for the same seat on a plane and they
+both show up at the airport, only one of them gets on the plane. The
+passenger who is left behind in the airport terminal has been
+"bumped".)
+
+The third sort of trouble is when Alice and Bob both amend the same
+changeset *C* to have different successors. When this happens, the
+successors are both called *divergent* (unless one of them is in
+public phase; only mutable changesets are divergent).
+
+The collective term for unstable, bumped, and divergent changeset is
+*troubled*::
+
+  troubled = unstable ∪ bumped ∪ divergent
+
+It is possible for a changeset to be in any of the troubled categories
+at the same time: it might be unstable and divergent, or bumped and
+divergent, or whatever.
+
+  [diagram: Venn diagram of troubled changesets, showing overlap]
+
+The presence of troubled changesets indicates the need to run ``hg
+evolve``.
+
+Hidden (and visible) changesets
+-------------------------------
+
+Some obsolete changesets are *hidden*: deliberately suppressed by
+Mercurial and usually not visible through the UI. (As of Mercurial
+2.9, there are still some commands that inadvertently reveal hidden
+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::
+
+  repo ⊇ obsolete ⊇ hidden
+
+Or, putting it visually:
+
+  [diagram: Venn diagram showing nested strict subsets]
+
+However, the presence of obsolete but not hidden changesets should be
+temporary. The desired end state for any history mutation operation is
+that all obsolete changesets are hidden, i.e.:
+
+  repo ⊇ obsolete, obsolete = hidden
+
+Visually:
+
+  [diagram: Venn diagram showing obsolete = hidden, subset of repo]
+
+
+Why is this changeset visible?
+------------------------------
+
+Any changeset which is not hidden is *visible*. That is, ::
+
+  visible = repo ∖ hidden
+
+(Recall that ∖ means set difference: *visible* is the set of
+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::
+
+  hideable = obsolete
+  blockers = bookmarks ∪ parents(workingcopy) ∪ localtags
+  hidden = hideable ∖ ancestors((repo ∖ hideable) ∪ blockers)
+
+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::
+
+        x-x
+       /
+  -o-o-o-o
+     \
+      x-x-o
+
+Here's the computation required to determine which changesets are
+hidden::
+
+  repo = { 0, 1, 2, 3, 4, 5, 6, 7, 8 }
+
+  hideable = obsolete = { 2, 4, 5, 8 }
+
+  blockers = { 6 } ∪ { 4 } ∪ {}
+
+  blockers = { 4, 6 }
+
+  hidden = hideable ∖ ancestors((repo ∖ { 2, 4, 5, 8 }) ∪ { 4, 6 })
+
+  hidden = hideable ∖ ancestors({ 0, 1, 3, 6, 7 } ∪ { 4, 6 })
+
+  hidden = hideable ∖ ancestors({ 0, 1, 3, 4, 6, 7 })
+
+  hidden = { 2, 4, 5, 8 } ∖ { 0, 1, 2, 3, 4, 5, 6, 7 }
+
+  hidden = { 8 }
--- a/docs/conf.py	Tue Jun 23 16:45:55 2015 -0700
+++ b/docs/conf.py	Tue Jun 23 16:47:24 2015 -0700
@@ -12,8 +12,8 @@
 master_doc = 'index'
 
 # General substitutions.
-project = 'Obsolete experimentation'
-copyright = '2010-2011, pierre-yves.david@logilab.fr'
+project = 'evolve extension for Mercurial'
+copyright = '2010-2014, Pierre-Yves David, Greg Ward, and contributors'
 
 # The default replacements for |version| and |release|, also used in various
 # other places throughout the built documents.
--- a/docs/evolve-collaboration.rst	Tue Jun 23 16:45:55 2015 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -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	Tue Jun 23 16:45:55 2015 -0700
+++ b/docs/evolve-faq.rst	Tue Jun 23 16:47:24 2015 -0700
@@ -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	Tue Jun 23 16:45:55 2015 -0700
+++ b/docs/evolve-good-practice.rst	Tue Jun 23 16:47:24 2015 -0700
@@ -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
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--- a/docs/from-mq.rst	Tue Jun 23 16:45:55 2015 -0700
+++ b/docs/from-mq.rst	Tue Jun 23 16:47:24 2015 -0700
@@ -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	Tue Jun 23 16:45:55 2015 -0700
+++ b/docs/index.rst	Tue Jun 23 16:47:24 2015 -0700
@@ -1,166 +1,147 @@
-.. Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
-..                Logilab SA        <contact@logilab.fr>
-
-========================================
-Changeset Evolution Experimentation
-========================================
-
+.. Copyright © 2014 Greg Ward <greg@gerg.ca>
 
-This is the online documentation of the `evolve extension`_. An experimental
-extension that drive the implementation of the `changeset evolution concept`_ for
-Mercurial.
-
-.. _`evolve extension`: http://mercurial.selenic.com/wiki/EvolveExtension
-.. _`changeset evolution concept`: http://mercurial.selenic.com/wiki/ChangesetEvolution
-
-Here are various materials on planned improvement to Mercurial regarding
-rewriting history.
-
-First, read about what challenges arise while rewriting history and how we plan to
-solve them once and for all.
+==================================
+Changeset Evolution with Mercurial
+==================================
 
 .. toctree::
    :maxdepth: 2
 
-   instability
+   user-guide
+   sharing
+   concepts
+   from-mq
 
-The effort is split in two parts:
+`evolve`_ is an experimental Mercurial extension for safe mutable history.
+
+.. _`evolve`: http://mercurial.selenic.com/wiki/EvolveExtension
 
- * The **obsolescence marker** concept aims to provide an alternative to ``strip``
-   to get rid of changesets. This concept has been partially implemented since
-   Mercurial 2.3.
+With core Mercurial, changesets are permanent and immutable. You can
+commit new changesets to modify your source code, but you cannot
+modify or remove old changesets—they are carved in stone for all
+eternity.
+
+For years, Mercurial has included various extensions that allow
+history modification: ``rebase``, ``mq``, ``histedit``, and so forth.
+These are useful and popular extensions, and in fact history
+modification is one of the big reasons DVCSes (distributed version
+control systems) like Mercurial took off.
+
+But there's a catch: until now, Mercurial's various mechanisms for
+modifying history have been *unsafe*, in that changesets were
+destroyed (“stripped”) rather than simply made invisible.
+
+``evolve`` makes things better in a couple of ways:
 
- * The **evolve** Mercurial extension rewrites history using obsolete
-   *marker* under the hood.
+  * It changes the behaviour of most existing history modification
+    extensions (``rebase``, ``histedit``, etc.) so they use a safer
+    mechanism (*changeset obsolescence*, covered below) rather than
+    the older, less safe *strip* operation.
+
+  * It provides a new way of modifying history that is roughly
+    equivalent to ``mq`` (but much nicer and safer).
+
+It helps to understand that ``evolve`` builds on infrastructure
+already in core Mercurial:
+
+  * *Phases* (starting in Mercurial 2.1) allow you to distinguish
+    mutable and immutable changesets. We'll cover phases early in the
+    user guide, since understanding phases is essential to
+    understanding ``evolve``.
 
-The first and most important step is by far the **obsolescence marker**. However
-most users will never be directly exposed to the concept. For this reason
-this manual starts with changeset evolution.
+  * *Changeset obsolescence* (starting in Mercurial 2.3) is how
+    Mercurial knows how history has been modified, specifically when
+    one changeset replaces another. In the obsolescence model, a
+    changeset is neither removed nor modified, but is instead marked
+    *obsolete* and typically replaced by a *successor*. Obsolete
+    changesets usually become *hidden* as well. Obsolescence is an
+    invisible feature until you start using ``evolve``, so we'll cover
+    it in the user guide too.
 
-Evolve: A robust alternative to MQ
-====================================
+Some of the things you can do with ``evolve`` are:
+
+  * Fix a mistake immediately: “Oops! I just committed a changeset
+    with a syntax error—I'll fix that and amend the changeset so no
+    one sees my mistake.” (While this is possible using existing
+    features of core Mercurial, ``evolve`` makes it safer.)
 
-Evolve is an experimental history rewriting extension that uses obsolete
-markers. It is inspired by MQ and pbranch but has multiple advantages over
-them:
+  * Fix a mistake a little bit later: “Oops! I broke the tests three
+    commits back, but only noticed it now—I'll just update back to the
+    bad changeset, fix my mistake, amend the changeset, and evolve
+    history to update the affected changesets.”
+
+  * Remove unwanted changes: “I hacked in some debug output two
+    commits back; everything is working now, so I'll just prune that
+    unwanted changeset and evolve history before pushing.”
+
+  * Share mutable history with yourself: say you do most of your
+    programming work locally, but need to test on a big remote server
+    somewhere before you know everything is good. You can use
+    ``evolve`` to share mutable history between two computers, pushing
+    finely polished changesets to a public repository only after
+    testing on the test server.
 
-* Focus on your current work.
+  * Share mutable history for code review: you don't want to publish
+    unreviewed changesets, but you can't block every commit waiting
+    for code review. The solution is to share mutable history with
+    your reviewer, amending each changeset until it passes review.
+
+``evolve`` is experimental!
+---------------------------
 
-    You can focus your work on a single changeset and take care of adapting
-    descendent changesets later.
+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.
 
-* Handle **non-linear history with branches and merges**
+  * 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``.
 
-* Rely internally on Mercurial's **robust merge** mechanism.
+.. _`this query`: http://bz.selenic.com/buglist.cgi?component=evolution&bug_status=UNCONFIRMED&bug_status=CONFIRMED&bug_status=NEED_EXAMPLE
+
+Installation and setup
+----------------------
+
+To use ``evolve``, you must:
+
+  #. Clone the ``evolve`` repository::
 
-  Simple conflicts are handled by real merge tools using the appropriate ancestor.
-  Conflicts are much rarer and much more user friendly.
+       cd ~/src
+       hg clone https://bitbucket.org/marmoute/mutable-history
+
+  #. Configure the extension, either locally ::
+
+       hg config --local
+
+     or for all your repositories ::
 
-*  Mutable history **fully available all the time**.
+       hg config --edit
+
+     Then add ::
 
-  Always use 'hg update' and forget about (un)applying patches to access the
-  mutable part of your history.
+       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.
 
 
-* Use only **plain changesets** and forget about patches. Evolve will create and
-  exchange real changesets. Mutable history can be used in all usual operations:
-  pull, push, log, diff, etc.
-
-* Allow **sharing and collaboration** mutable history without fear of duplicates
-  (thanks to obsolete marker).
-
-* Cover all MQ usage but guard.
-
-.. warning:: The evolve extension and obsolete markers are at an experimental
-             stage. While using obsolete you willl likely be exposed to complex
-             implications of the **obsolete marker** concept. I do not recommend
-             non-power users to test this at this stage.
-
-             While numbered 1.0.0, the command line API of this version should
-             **not** be regarded as *stable*: command behavior, name and
-             options may change in future releases or once integrated into
-             Mercurial. It is still an immature extension; a lot of
-             features are still missing but there is low risk of
-             repository corruption.
-
-             Production-ready version should hide such details from normal users.
-
-The evolve extension requires Mercurial 2.5 (older versions supports down to 2.2)
-
-To enable the evolve extension use::
-
-    $ hg clone https://bitbucket.org/marmoute/mutable-history -u stable
-    $ echo '[extensions]\nevolve=$PWD/mutable-history/hgext/evolve.py' >> ~/.hgrc
-
-You will probably want to use hgview_ to visualize obsolescence. Version 1.7.1
-or later is required.
-
-.. _hgview: http://www.logilab.org/project/hgview/
-
-
- ---
-
-For more information see the documents below:
-
-.. toctree::
-   :maxdepth: 1
-
-   tutorials/tutorial
-   evolve-good-practice
-   evolve-faq
-   from-mq
-   evolve-collaboration
-   qsync
+Next steps:
+-----------
 
-Smart changeset deletion: Obsolete Marker
-==========================================
-
-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 that 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
-
-- share and collaborate on mutable parts of the history
-
-- gracefully handle history rewriting conflicts
-
-- allow various history rewriting UI to collaborate with a underlying common API
-
- ---
-
-For more information, see the documents below
+  * For a practical guide to using ``evolve`` in a single repository,
+    see the `user guide`_.
+  * For more advanced tricks, see `sharing mutable history`_.
+  * To learn about the concepts underlying ``evolve``, see `concepts`_
+    (incomplete).
+  * If you're coming from MQ, see the `MQ migration guide`_ (incomplete).
 
-.. toctree::
-   :maxdepth: 1
-
-   obs-concept
-   obs-terms
-   obs-implementation
-
-
-Known limitations and bugs
-=================================
-
-Here is a list of known issues that will be fixed later:
-
-
-* You need to provide to `graft --continue -O` if you started you
-  graft using `-O`.
-
-  you to manually specify target all the time.
-
-* Trying to exchange obsolete marker with a static http repo will crash.
-
-* Extinct changesets are hidden using the *hidden* feature of mercurial only
-  supported by a few commands.
-
-  Only ``hg log``, ``hgview`` and `hg glog` support it. Neither ``hg heads`` nor other visual viewers do.
-
-* hg heads shows extinct changesets.
+.. _`user guide`: user-guide.html
+.. _`sharing mutable history`: sharing.html
+.. _`concepts`: concepts.html
+.. _`MQ migration guide`: from-mq.html
--- a/docs/instability.rst	Tue Jun 23 16:45:55 2015 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -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.
-
-
--- a/docs/obs-concept.rst	Tue Jun 23 16:45:55 2015 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -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.
--- a/docs/obs-implementation.rst	Tue Jun 23 16:45:55 2015 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -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	Tue Jun 23 16:45:55 2015 -0700
+++ b/docs/obs-terms.rst	Tue Jun 23 16:47:24 2015 -0700
@@ -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*)
--- a/docs/qsync.rst	Tue Jun 23 16:45:55 2015 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -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
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/docs/sharing.rst	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,735 @@
+.. Copyright © 2014 Greg Ward <greg@gerg.ca>
+
+------------------------------
+Evolve: Shared Mutable History
+------------------------------
+
+.. contents::
+
+Once you have mastered the art of mutable history in a single
+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.
+
+.. _`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
+prefer to write code locally: everything is setup the way you like it,
+and you can use your preferred editor, IDE, merge/diff tools, etc.
+
+Traditionally, your options are limited: either
+
+  * (ab)use your source control system by committing half-working code
+    in order to get it onto the remote test server, or
+  * go behind source control's back by using ``rsync`` (or similar) to
+    transfer your code back-and-forth until it is ready to commit
+
+The former is less bad with distributed version control systems like
+Mercurial, but it's still far from ideal. (One important version
+control “best practice” is that every commit should make things just a
+little bit better, i.e. you should never commit code that is worse
+than what came before.) The latter, avoiding version control entirely,
+means that you're walking a tightrope without a safety net. One
+accidental ``rsync`` in the wrong direction could destroy hours of
+work.
+
+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,
+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
+push`` promotes changesets from *draft* to *public*, and public
+changesets are immutable. You can change this behaviour by
+reconfiguring the *target* repository so that it is non-publishing.
+(Short version: set ``phases.publish`` to ``false``. Long version
+follows.)
+
+Setting up
+==========
+
+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, ``test-repo`` and
+``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
+test server in a rack somewhere behind SSH. So for the most part,
+we'll develop in ``dev-repo``, push to ``test-repo``, test and polish
+there, and push to ``public``.
+
+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``.
+
+First, edit the configuration for ``test-repo``::
+
+  $ hg -R test-repo config --edit --local
+
+and add ::
+
+  [phases]
+  publish = false
+
+  [extensions]
+  evolve = /path/to/mutable-history/hgext/evolve.py
+
+Then edit the configuration for ``dev-repo``::
+
+  $ hg -R dev-repo config --edit --local
+
+and add ::
+
+  [extensions]
+  evolve = /path/to/mutable-history/hgext/evolve.py
+
+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
+each repository.
+
+To start things off, let's make one public, immutable changeset::
+
+  $ cd test-repo
+  $ echo 'my new project' > file1
+  $ hg add file1
+  $ hg commit -m 'create new project'
+  $ 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
+
+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
+just as before.
+
+.. _`user guide`: user-guide.html
+
+Things get different when you push changesets to ``test-repo``. Or
+rather, things stay the same, which *is* different: because we
+configured ``test-repo`` to be non-publishing, draft changesets stay
+draft when we push them to ``test-repo``. Importantly, they're also
+draft (mutable) in ``test-repo``.
+
+Let's commit a preliminary change and push it to ``test-repo`` for
+testing. ::
+
+  $ echo 'fix fix fix' > file1
+  $ hg commit -m 'prelim change'
+  $ hg push ../test-repo
+
+At this point, ``dev-repo`` and ``test-repo`` have the same changesets
+in the same phases:
+
+  [figure SG01: rev 0:0dc9 public, rev 1:f649 draft, same on both repos]
+
+(You may notice a change in notation from the user guide: now
+changesets are labelled with their revision number and the first four
+digits of the 40-digit hexadecimal changeset ID. Mercurial revision
+numbers are never stable when working across repositories, especially
+when obsolescence is involved. We'll see why shortly.)
+
+Now let's switch to ``test-repo`` to test our change::
+
+  $ cd ../test-repo
+  $ hg update
+
+Don't forget to ``hg update``! Pushing only adds changesets to a
+remote repository; it does not update the working directory (unless
+you have a hook that updates for you).
+
+Now let's imagine the tests failed because we didn't use proper
+punctuation and capitalization (oops). Let's amend our preliminary fix
+(and fix the lame commit message while we're at it)::
+
+  $ echo 'Fix fix fix.' > file1
+  $ hg amend -m 'fix bug 37'
+
+Now we're in a funny intermediate state (figure 2): revision 1:f649 is
+obsolete in ``test-repo``, having been replaced by revision 3:60ff
+(revision 2:2a03 is another one of those temporary amend commits that
+we saw in the user guide)—but ``dev-repo`` knows nothing of these
+recent developments.
+
+  [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 hidden. Push and pull
+transfer obsolesence markers between repositories, but they do not
+transfer hidden changesets.
+
+  [figure SG03: dev-repo grows new rev 2:60ff, marks 1:f649 obsolete]
+
+Because of this deliberately incomplete synchronization, revision
+numbers in ``test-repo`` and ``dev-repo`` are no longer consistent. We
+*must* use changeset IDs.
+
+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
+less-than-perfect idea. We'll implement it locally in ``dev-repo`` and
+push to ``test-repo``::
+
+  $ echo 'Fix, fix, and fix.' > file1
+  $ hg amend
+  $ hg push
+
+This time around, the temporary amend commit is in ``dev-repo``, and
+it is not transferred to ``test-repo``—the same as before, just in the
+opposite direction. Figure 4 shows the two repositories after amending
+in ``dev-repo`` and pushing to ``test-repo``.
+
+  [figure SG04: each repo has one temporary amend commit, but they're different in each one]
+
+Let's hop over to ``test-repo`` to test the more elegant fix::
+
+  $ cd ../test-repo
+  $ hg update
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+
+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
+  [...]
+  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 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``. 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`` 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 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::
+
+  $ 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::
+
+  $ 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,
+but every competent chef keeps several around. Ever try to chop onions
+with a spoon?)
+
+In the user guide, we saw examples of *unstable* changesets, which are
+the most common type of troubled changeset. (Recall that a
+non-obsolete changeset with obsolete ancestors is unstable.)
+
+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.
+
+Setting up
+==========
+
+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::
+
+  $ 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
+
+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
+
+  [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
+traveller left behind in the airport terminal is said to have been
+*bumped*.
+
+Similarly, if Alice and Bob are collaborating on some mutable
+changesets, it's possible to get into a situation where an otherwise
+worthwhile changeset cannot be pushed to the public repository; it is
+bumped by an alternative changeset that happened to get there first.
+Let's demonstrate one way this could happen.
+
+It starts with Alice committing a bug fix. Right now, we don't yet
+know if this bug fix is good enough to push to the public repository,
+but it's good enough for Alice to commit. ::
+
+  $ cd alice
+  $ echo 'fix' > file2
+  $ 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 -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 -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.
+Nevertheless, ``evolve`` can usually sort things out, as we will see.)
+
+  [figure SG06: Bob's repo with one amendment]
+
+After some testing, Alice realizes her bug fix is just fine as it is:
+no need for further polishing and amending, this changeset is ready to
+publish. ::
+
+  $ cd ../alice
+  $ 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
+Alice's repository (and ``public``), that changeset is public: it is
+immutable, carved in stone for all eternity. No changeset can be both
+obsolete and public, so Bob is in for a surprise the next time he
+pulls from ``public``::
+
+  $ cd ../bob
+  $ hg pull -q -u
+  1 new bumped changesets
+
+Figure 7 shows what just happened to Bob's repository: changeset
+2:e011 is now public, so it can't be obsolete. When that changeset was
+obsolete, it made perfect sense for it to have a successor, namely
+Bob's amendment of Alice's fix (changeset 4:fe88). But it's illogical
+for a public changeset to have a successor, so 4:fe88 is in trouble:
+it has been *bumped*.
+
+  [figure SG07: 2:e011 now public not obsolete, 4:fe88 now bumped]
+
+As usual when there's trouble in your repository, the solution is to
+evolve it::
+
+  $ hg evolve --all
+
+Figure 8 illustrate's Bob's repository after evolving away the bumped
+changeset. Ignoring the obsolete changesets, Bob now has a nice,
+clean, simple history. His amendment of Alice's bug fix lives on, as
+changeset 5:227d—albeit with a software-generated commit message. (Bob
+should probably amend that changeset to improve the commit message.)
+But the important thing is that his repository no longer has any
+troubled changesets, thanks to ``evolve``.
+
+  [figure SG08: 5:227d is new, formerly bumped changeset 4:fe88 now hidden]
+
+Conclusion
+----------
+
+Mutable history is a powerful tool. Like a sharp knife, an experienced
+user can do wonderful things with it, much more wonderful than with a
+dull knife (never mind a rusty spoon). At the same time, an
+inattentive or careless user can do harm to himself or others.
+Mercurial with ``evolve`` goes to great lengths to limit the harm you
+can do by trying to handle all possible types of “troubled”
+changesets. But having a first-aid kit nearby does not excuse you from
+being careful with sharp knives.
+
+Mutable history shared across multiple repositories by a single
+developer is a natural extension of this model. Once you are used to
+using a single sharp knife on its own, it's pretty straightforward to
+chop onions and mushrooms using the same knife, or to alternate
+between two chopping boards with different knives.
+
+Mutable history shared by multiple developers is a scary place to go.
+Imagine a professional kitchen full of expert chefs tossing their
+favourite knives back and forth, with the occasional axe or chainsaw
+thrown in to spice things up. If you're confident that you *and your
+colleagues* can do it without losing a limb, go for it. But be sure to
+practice a lot first before you rely on it!
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/docs/user-guide.rst	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,601 @@
+.. Copyright © 2014 Greg Ward <greg@gerg.ca>
+
+------------------
+Evolve: User Guide
+------------------
+
+.. contents::
+
+Life without ``evolve``
+-----------------------
+
+Before we dive into learning about ``evolve``, let's look into some
+features of core Mercurial that interact with ``evolve``. ``commit``
+affects ``evolve``, and ``evolve`` modifies how ``commit --amend``
+works.
+
+Example 1: Commit a new changeset
+=================================
+
+To create a new changeset, simply run ``hg commit`` as usual.
+``evolve`` does not change the behaviour of ``commit`` at all.
+
+However, it's important to understand that new changesets are in the
+*draft* phase by default: they are mutable. This means that they can
+be modified by Mercurial's existing history-editing commands
+(``rebase``, ``histedit``, etc.), and also by the ``evolve``
+extension. Specifically, ``evolve`` adds a number of commands that can
+be used to modify history: ``amend``, ``uncommit``, ``prune``,
+``fold``, and ``evolve``. Generally speaking, changesets remain in
+*draft* phase until they are pushed to another repository, at which
+point they enter *public* phase. ::
+
+  $ hg commit -m 'implement feature X'
+  $ hg phase -r .
+  1: draft
+
+(Strictly speaking, changesets only become public when they are pushed
+to a *publishing* repository. But all repositories are publishing by
+default; you have to explicitly configure repositories to be
+*non-publishing*. Non-publishing repositories are an advanced topic
+which we'll see when we get to `sharing mutable history`_.)
+
+.. _`sharing mutable history`: sharing.html
+
+Example 2: Amend a changeset (traditional)
+==========================================
+
+Imagine you've just committed a new changeset, and then you discover a
+mistake. Maybe you forgot to run the tests and a failure slipped in.
+You want to modify history so that you push one perfect changeset,
+rather than one flawed changeset followed by an "oops" commit. (Or
+perhaps you made a typo in the commit message—this is really feature
+*Y*, not feature X. You can't fix that with a followup commit.)
+
+This is actually trivial with plain vanilla Mercurial since 2.2: fix
+your mistake and run ::
+
+  $ hg commit --amend -m 'implement feature Y'
+
+to create a new, amended changeset. The drawback of doing this with
+vanilla Mercurial is that your original, flawed, changeset is removed
+from the repository. This is *unsafe* history editing. It's probably
+not too serious if all you did was fix a syntax error, but still.
+
+.. figure:: figures/figure-ug01.svg
+
+   Figure 1: unsafe history modification with core Mercurial (not
+   using ``evolve``): the original revision 1 is destroyed.
+
+(Incidentally, Mercurial's traditional history modification mechanism
+isn't *really* unsafe: any changeset(s) removed from the repository
+are kept in a backup directory, so you can manually restore them later
+if you change your mind. But it's awkward and inconvenient compared to
+the features provided by ``evolve`` and changeset obsolescence.)
+
+Life with ``evolve`` (basic usage)
+----------------------------------
+
+Once you enable the ``evolve`` extension, a number of features are
+available to you. First, we're going to explore several examples of
+painless, trouble-free history modification.
+
+Example 3: Amend a changeset (with ``evolve``)
+==============================================
+
+Outwardly, amending a changeset with ``evolve`` can look exactly the
+same as it does with core Mercurial (example 2)::
+
+  $ hg commit --amend -m 'implement feature Y'
+
+Alternately, you can use the new ``amend`` command added by
+``evolve``::
+
+  $ hg amend -m 'implement feature Y'
+
+(``hg amend`` is nearly synonymous with ``hg commit --amend``. The
+difference is that ``hg amend`` reuses the existing commit message by
+default, whereas ``hg commit --amend`` runs your editor if you don't
+pass ``-m`` or ``-l``.)
+
+Under the hood, though, things are quite different. Mercurial has
+simply marked the old changeset *obsolete*, replacing it with a new
+one. We'll explore what this means in detail later, after working
+through a few more examples.
+
+Example 4: Prune an unwanted changeset
+======================================
+
+Sometimes you make a change, and then decide it was such a bad idea
+that you don't want anyone to know about it. Or maybe it was a
+debugging hack that you needed to keep around for a while, but do not
+intend to ever push publicly. ::
+
+  $ echo 'debug hack' >> file1.c
+  $ hg commit -m 'debug hack'
+
+In either case, ``hg prune`` is the answer. ``prune`` simply marks
+changesets obsolete without creating any new changesets to replace
+them::
+
+  $ hg prune .
+  1 changesets pruned
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  working directory now at 934359450037
+
+Outwardly, it appears that your “debug hack” commit never happened;
+we're right back where we started::
+
+  $ hg parents --template '{rev}:{node|short}  {desc|firstline}\n'
+  3:934359450037  implement feature Y
+
+In reality, though, the “debug hack” is still there, obsolete and hidden.
+
+Example 5: Uncommit changes to certain files
+============================================
+
+Occasionally you commit more than you intended: perhaps you made
+unrelated changes to different files, and thus intend to commit
+different files separately. ::
+
+  $ echo 'relevant' >> file1.c
+  $ echo 'irrelevant' >> file2.c
+
+If you forget to specify filenames on the ``commit`` command line,
+Mercurial commits all those changes together::
+
+  $ hg commit -m 'fix bug 234'          # oops: too many files
+
+Luckily, this mistake is easy to fix with ``uncommit``::
+
+  $ hg uncommit file2.c
+  $ hg status
+  M file2.c
+
+Let's verify that the replacement changeset looks right (i.e.,
+modifies only ``file1.c``)::
+
+  $ hg parents --template '{rev}:{node|short}  {desc|firstline}\n{files}\n'
+  6:c8defeecf7a4  fix bug 234
+  file1.c
+
+As before, the original flawed changeset is still there, but obsolete
+and hidden. It won't be exchanged with other repositories by ``push``,
+``pull``, or ``clone``.
+
+Example 6: Fold multiple changesets together into one
+=====================================================
+
+If you're making extensive changes to fragile source code, you might
+commit more frequently than normal so that you can fallback on a
+known good state if one step goes badly. ::
+
+  $ echo step1 >> file1.c
+  $ hg commit -m 'step 1'               # revision 7
+  $ echo step2 >> file1.c
+  $ hg commit -m 'step 2'               # revision 8
+  $ echo step3 >> file2.c
+  $ hg commit -m 'step 3'               # revision 9
+
+At the end of such a sequence, you often end up with a series of small
+changesets that are tedious to review individually. It might make more
+sense to combine them into a single changeset using the ``fold``
+command.
+
+To make sure we pass the right revisions to ``fold``, let's review the
+changesets we just created, from revision 7::
+
+  $ hg log --template '{rev}:{node|short}  {desc|firstline}\n' -r 7::
+  7:05e61aab8294  step 1
+  8:be6d5bc8e4cc  step 2
+  9:35f432d9f7c1  step 3
+
+and fold them::
+
+  $ hg fold -m 'fix bug 64' -r 7::
+  3 changesets folded
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+
+This time, Mercurial marks three changesets obsolete, replacing them
+all with a single *successor*.
+
+(You might be familiar with this operation under other names, like
+*squash* or *collapse*.)
+
+Changeset obsolescence under the hood
+-------------------------------------
+
+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
+understand the more advanced use cases we'll see later.
+
+When you have the ``evolve`` extension enabled, all history
+modification uses the same underlying mechanism: the original
+changesets are marked *obsolete* and replaced by zero or more
+*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 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
+more detail (and mathematical precision) in the `concepts`_ guide.
+
+.. _`concepts`: concepts.html
+
+Under the hood: Amend a changeset
+=================================
+
+Consider Example 2, amending a changeset with ``evolve``. We saw above
+that you can do this using the exact same command-line syntax as core
+Mercurial, namely ``hg commit --amend``. But the implementation is
+quite different, and Figure 2 shows how.
+
+.. figure:: figures/figure-ug02.svg
+
+   Figure 2: safe history modification using ``evolve``: the original
+   revision 1 is preserved as an obsolete changeset. (The "temporary
+   amend commit", marked with T, is an implementation detail stemming
+   from limitations in Mercurial's current merge machinery. Future
+   versions of Mercurial will not create them.)
+
+In this case, the obsolete changesets are also *hidden*. That is the
+usual end state for obsolete changesets. But many scenarios result in
+obsolete changesets that are still visible, which indicates your
+history modification work is not yet done. We'll see examples of that
+later, when we cover advanced usage.
+
+
+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::
+
+  $ 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
+===========================================
+
+``prune`` (example 4 above) is the simplest history modification
+command provided by ``evolve``. All it does is mark the specified
+changeset(s) obsolete, with no successor/precursor relationships
+involved. (If the working directory parent was one of the obsolete
+changesets, ``prune`` updates back to a suitable ancestor.)
+
+.. figure:: figures/figure-ug03.svg
+
+   Figure 3: pruning a changeset marks it obsolete with no successors.
+
+Under the hood: Uncommit changes to certain files
+=================================================
+
+In one sense, ``uncommit`` is a simplified version of ``amend``. Like
+``amend``, it obsoletes one changeset and leaves it with a single
+successor. Unlike ``amend``, there is no ugly "temporary amend commit"
+cluttering up the repository.
+
+In another sense, ``uncommit`` is the inverse of ``amend``: ``amend``
+takes any uncommitted changes in the working dir and “adds”
+them to the working directory's parent changeset. (In reality, of
+course, it creates a successor changeset, marking the original
+obsolete.) In contrast, ``uncommit`` takes some changes in the working
+directory's parent and moves them to the working dir, creating a new
+successor changeset in the process. Figure 4 illustrates.
+
+.. figure:: figures/figure-ug04.svg
+
+   Figure 4: uncommit moves some of the changes from the working
+   directory parent into the working dir, preserving the remaining
+   changes as a new successor changeset. (N.B. revision 4 is not shown
+   here because it was marked obsolete in the previous example.)
+
+
+Under the hood: Fold multiple changesets together into one
+==========================================================
+
+The last basic example is folding multiple changesets into one, which
+marks multiple changesets obsolete, replacing them all with a single
+successor.
+
+.. figure:: figures/figure-ug05.svg
+
+   Figure 5: fold combines multiple changesets into a single
+   successor, marking the original (folded) changesets obsolete.
+
+
+Obsolete is not hidden
+======================
+
+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.
+
+Note that all hidden changesets are obsolete: hidden is a subset of
+obsolete.
+
+
+Life with ``evolve`` (advanced usage)
+-------------------------------------
+
+Now that you've got a solid understanding of how ``evolve`` works in
+concert with changeset obsolescence, let's explore some more advanced
+scenarios. All of these scenarios will involve *unstable* changesets,
+which is an unavoidable consequence of obsolescence. What really sets
+``evolve`` apart from other history modification mechanisms is the
+fact that it recognizes troubles like unstable changesets and provides
+a consistent way for you to get out of trouble.
+
+(Incidentally, there are two other types of trouble that changesets
+can get into with ``evolve``: they may be *divergent* or *bumped*.
+Both of those states are more likely to occur when `sharing mutable
+history`_, so we won't see them in this user guide.)
+
+.. _`sharing mutable history`: sharing.html
+
+
+Example 7: Amend an older changeset
+===================================
+
+Sometimes you don't notice your mistakes until after you have
+committed new changesets on top of them. ::
+
+  $ hg commit -m 'fix bug 17'         # rev 11 (mistake here)
+  $ hg commit -m 'cleanup'            # rev 12
+  $ hg commit -m 'feature 23'         # rev 13
+
+Traditionally, your only option is to commit an "oops" changeset that
+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: 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 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
+committed revision 13 and noticed the mistake in revision 11::
+
+  $ hg update 11
+  [...fix mistake...]
+  $ hg amend
+
+At this point, revision 11 is *obsolete* and revisions 12 and 13—the
+descendants of 11—are in a funny state: they are *unstable*.
+
+.. figure:: figures/figure-ug06.svg
+
+   Figure 6: amending a changeset with descendants means the amended
+   changeset is obsolete but remains visible; its non-obsolete
+   descendants are *unstable*. The temporary amend commit, revision
+   14, is hidden because it has no non-obsolete descendants.
+
+All non-obsolete descendants of an obsolete changeset are unstable. An
+interesting consequence of this is that revision 11 is still visible,
+even though it is obsolete. Obsolete changesets with non-obsolete
+descendants are not hidden.
+
+The fix is to *evolve* history::
+
+  $ hg evolve --all
+
+This is a separate step, not automatically part of ``hg amend``,
+because there might be conflicts. If your amended changeset modifies a
+file that one of its descendants also modified, Mercurial has to fire
+up your merge tool to resolve the conflict. More importantly, you have
+to switch contexts from "writing code" to "resolving conflicts". That
+can be an expensive context switch, so Mercurial lets you decide when
+to do it.
+
+The end state, after ``evolve`` finishes, is that the original
+revisions (11-13) are obsolete and hidden. Their successor revisions
+(15-17) replace them.
+
+.. figure:: figures/figure-ug07.svg
+
+   Figure 7: evolve your repository (``hg evolve --all``) to take care
+   of instability. Unstable changesets become obsolete, and are
+   replaced by successors just like the amended changeset was.
+
+Example 8: Prune an older changeset
+===================================
+
+Let's say you've just committed the following changesets::
+
+  $ hg commit -m 'useful work'       # rev 18
+  $ hg commit -m 'debug hack'        # rev 19
+  $ hg commit -m 'more work'         # rev 20
+
+You want to drop revision 19, but keep 18 and 20. No problem::
+
+  $ hg prune 19
+  1 changesets pruned
+  1 new unstable changesets
+
+As above, this leaves your repository in a funny intermediate state:
+revision 20 is the non-obsolete descendant of obsolete revision 19.
+That is, revision 20 is unstable.
+
+.. figure:: figures/figure-ug08.svg
+
+   Figure 8: ``hg prune`` marks a changeset obsolete without creating
+   a successor. Just like with ``hg amend``, non-obsolete descendants
+   of the pruned changeset are now unstable.
+
+As before, the solution to unstable changesets is to evolve your
+repository::
+
+  $ hg evolve --all
+
+This rebases revision 20 on top of 18 as the new revision 21, leaving
+19 and 20 obsolete and hidden:
+
+.. figure:: figures/figure-ug09.svg
+
+   Figure 9: once again, ``hg evolve --all`` takes care of instability.
+
+Example 9: Uncommit files from an older changeset (discard changes)
+=======================================================================
+
+As in example 5, let's say you accidentally commit some unrelated
+changes together. Unlike example 5, you don't notice your mistake
+immediately, but commit a new changeset on top of the bad one. ::
+
+  $ echo 'this fixes bug 53' >> file1.c
+  $ echo 'debug hack' >> file2.c
+  $ hg commit -m 'fix bug 53'                     # rev 22 (oops)
+  $ echo 'and this handles bug 67' >> file1.c
+  $ hg commit -m 'fix bug 67'                     # rev 23 (fine)
+
+As with ``amend``, you need to travel back in time and repair revision
+22, leaving your changes to ``file2.c`` back in the working
+directory::
+
+  $ hg update 22
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg uncommit file2.c
+  1 new unstable changesets
+  $ hg status
+  M file2.c
+
+Now your repository has unstable changesets, so you need to evolve it.
+But ``hg evolve`` requires a clean working directory to resolve merge
+conflicts, so you need to decide what to do with ``file2.c``.
+
+In this case, the change to ``file2.c`` was a temporary debugging
+hack, so we can discard it and immediately evolve the instability away::
+
+  $ hg revert file2.c
+  $ hg evolve --all
+  move:[23] fix bug 67
+  atop:[24] fix bug 53
+
+Figure 10 illustrates the whole process.
+
+.. figure:: figures/figure-ug10.svg
+
+   Figure 10: ``hg uncommit`` of a changeset with descendants results
+   in instability *and* a dirty working directory, both of which must
+   be dealt with.
+
+
+Example 10: Uncommit files to an older changeset (keep changes)
+===================================================================
+
+This is very similar to example 9. The difference that this time, our
+change to ``file2.c`` is valuable enough to commit, making things a
+bit more complicated. The setup is nearly identical::
+
+  $ echo 'fix a bug' >> file1.c
+  $ echo 'useful but unrelated' >> file2.c
+  $ hg commit -u dan -d '11 0' -m 'fix a bug'     # rev 26 (oops)
+  $ echo 'new feature' >> file1.c
+  $ hg commit -u dan -d '12 0' -m 'new feature'   # rev 27 (fine)
+
+As before, we update back to the flawed changeset (this time,
+revision 26) and ``uncommit``, leaving uncommitted changes to
+``file2.c`` in the working dir::
+
+  $ hg update -q 26
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg uncommit -q file2.c                        # obsoletes rev 26, creates rev 28
+  1 new unstable changesets
+  $ hg status
+  M file2.c
+
+This time, let's save that useful change before evolving::
+
+  $ hg commit -m 'useful tweak'                   # rev 29
+
+Figure 11 shows the story so far: ``uncommit`` obsoleted revision 26
+and created revision 28, the successor of 26. Then we committed
+revision 29, a child of 28. We still have to deal with the unstable
+revision 27.
+
+.. figure:: figures/figure-ug11.svg
+
+   Figure 11: Uncommitting a file and then committing that change
+   separately will soon result in a two-headed repository.
+
+This is where things get tricky. As usual when a repository has
+unstable changesets, we want to evolve it::
+
+  $ hg evolve --all
+
+The problem is that ``hg evolve`` rebases revision 27 onto revision
+28, creating 30 (the successor of 27). This is entirely logical: 27
+was the child of 26, and 26's successor is 28. So of course 27's
+successor (30) should be the child of 26's successor (28).
+Unfortunately, that leaves us with a two-headed repository:
+
+.. figure:: figures/figure-ug12.svg
+
+   Figure 12: ``evolve`` takes care of unstable changesets; it does
+   not solve all the world's problems.
+
+As usual when faced with a two-headed repository, you can either merge
+or rebase. It's up to you.
+
+
+Example 11: Recover an obsolete changeset
+=========================================
+
+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
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hgext/drophack.py	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,162 @@
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2 or any later version.
+'''This extension add a hacky command to drop changeset during review
+
+This extension is intended as a temporary hack to allow Matt Mackall to use
+evolve in the Mercurial review it self. You should probably not use it if your
+name is not Matt Mackall.
+'''
+
+import os
+import time
+import contextlib
+
+from mercurial.i18n import _
+from mercurial import cmdutil
+from mercurial import repair
+from mercurial import scmutil
+from mercurial import lock as lockmod
+from mercurial import util
+from mercurial import commands
+
+cmdtable = {}
+command = cmdutil.command(cmdtable)
+
+
+@contextlib.contextmanager
+def timed(ui, caption):
+    ostart = os.times()
+    cstart = time.time()
+    yield
+    cstop = time.time()
+    ostop = os.times()
+    wall = cstop - cstart
+    user = ostop[0] - ostart[0]
+    sys  = ostop[1] - ostart[1]
+    comb = user + sys
+    ui.write("%s: wall %f comb %f user %f sys %f\n"
+             % (caption, wall, comb, user, sys))
+
+def obsmarkerchainfrom(obsstore, nodes):
+    """return all marker chain starting from node
+
+    Starting from mean "use as successors"."""
+    # XXX need something smarter for descendant of bumped changeset
+    seennodes = set(nodes)
+    seenmarkers = set()
+    pendingnodes = set(nodes)
+    precursorsmarkers = obsstore.precursors
+    while pendingnodes:
+        current = pendingnodes.pop()
+        new = set()
+        for precmark in precursorsmarkers.get(current, ()):
+            if precmark in seenmarkers:
+                continue
+            seenmarkers.add(precmark)
+            new.add(precmark[0])
+            yield precmark
+        new -= seennodes
+        pendingnodes |= new
+
+def stripmarker(ui, repo, markers):
+    """remove <markers> from the repo obsstore
+
+    The old obsstore content is saved in a `obsstore.prestrip` file
+    """
+    repo = repo.unfiltered()
+    repo.destroying()
+    oldmarkers = list(repo.obsstore._all)
+    util.rename(repo.sjoin('obsstore'),
+                repo.join('obsstore.prestrip'))
+    del repo.obsstore # drop the cache
+    newstore = repo.obsstore
+    assert not newstore # should be empty after rename
+    newmarkers = [m for m in oldmarkers if m not in markers]
+    tr = repo.transaction('drophack')
+    try:
+        newstore.add(tr, newmarkers)
+        tr.close()
+    finally:
+        tr.release()
+    repo.destroyed()
+
+
+@command('drop', [('r', 'rev', [], 'revision to update')], _('[-r] revs'))
+def cmddrop(ui, repo, *revs, **opts):
+    """I'm hacky do not use me!
+
+    This command strip a changeset, its precursors and all obsolescence marker
+    associated to its chain.
+
+    There is no way to limit the extend of the purge yet. You may have to
+    repull from other source to get some changeset and obsolescence marker
+    back.
+
+    This intended for Matt Mackall usage only. do not use me.
+    """
+    revs = list(revs)
+    revs.extend(opts['rev'])
+    if not revs:
+        revs = ['.']
+    # get the changeset
+    revs = scmutil.revrange(repo, revs)
+    if not revs:
+        ui.write_err('no revision to drop\n')
+        return 1
+    # lock from the beginning to prevent race
+    wlock = lock = None
+    try:
+        wlock = repo.wlock()
+        lock = repo.lock()
+        # check they have no children
+        if repo.revs('%ld and public()', revs):
+            ui.write_err('cannot drop public revision')
+            return 1
+        if repo.revs('children(%ld) - %ld', revs, revs):
+            ui.write_err('cannot drop revision with children')
+            return 1
+        if repo.revs('. and %ld', revs):
+            newrevs = repo.revs('max(::. - %ld)', revs)
+            if newrevs:
+                assert len(newrevs) == 1
+                newrev = newrevs.first()
+            else:
+                newrev = -1
+            commands.update(ui, repo, newrev)
+            ui.status(_('working directory now at %s\n') % repo[newrev])
+        # get all markers and successors up to root
+        nodes = [repo[r].node() for r in revs]
+        with timed(ui, 'search obsmarker'):
+            markers = set(obsmarkerchainfrom(repo.obsstore, nodes))
+        ui.write('%i obsmarkers found\n' % len(markers))
+        cl = repo.unfiltered().changelog
+        with timed(ui, 'search nodes'):
+            allnodes = set(nodes)
+            allnodes.update(m[0] for m in markers if cl.hasnode(m[0]))
+        ui.write('%i nodes found\n' % len(allnodes))
+        cl = repo.changelog
+        visiblenodes = set(n for n in allnodes if cl.hasnode(n))
+        # check constraint again
+        if repo.revs('%ln and public()', visiblenodes):
+            ui.write_err('cannot drop public revision')
+            return 1
+        if repo.revs('children(%ln) - %ln', visiblenodes, visiblenodes):
+            ui.write_err('cannot drop revision with children')
+            return 1
+
+        if markers:
+            # strip them
+            with timed(ui, 'strip obsmarker'):
+                stripmarker(ui, repo, markers)
+        # strip the changeset
+        with timed(ui, 'strip nodes'):
+            repair.strip(ui, repo, list(allnodes), backup="all", topic='drophack')
+
+    finally:
+        lockmod.release(lock, wlock)
+
+    # rewrite the whole file.
+    # print data.
+    # - time to compute the chain
+    # - time to strip the changeset
+    # - time to strip the obs marker.
--- a/hgext/evolve.py	Tue Jun 23 16:45:55 2015 -0700
+++ b/hgext/evolve.py	Tue Jun 23 16:47:24 2015 -0700
@@ -16,14 +16,21 @@
     - enables the "Changeset Obsolescence" feature of mercurial,
     - alters core commands and extensions that rewrite history to use
       this feature,
-    - improves some aspect of the early implementation in 2.3
+    - improves some aspect of the early implementation in Mercurial core
 '''
 
-testedwith = '2.7 2.7.1 2.7.2 2.8 2.8.1 2.8.2 2.9 2.9.1 2.9.2 3.0'
-buglink = 'https://bitbucket.org/marmoute/mutable-history/issues'
-
-import sys
+__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 re
+import socket
+import errno
+sha1re = re.compile(r'\b[0-9a-f]{6,40}\b')
 
 import mercurial
 from mercurial import util
@@ -32,12 +39,11 @@
     from mercurial import obsolete
     if not obsolete._enabled:
         obsolete._enabled = True
-    from mercurial import bookmarks
-    bookmarks.bmstore
+    from mercurial import wireproto
+    gboptslist = getattr(wireproto, 'gboptslist', None)
+    gboptsmap = getattr(wireproto, 'gboptsmap', None)
 except (ImportError, AttributeError):
-    raise util.Abort('Your Mercurial is too old for this version of Evolve',
-                     hint='requires version >> 2.4.x')
-
+    gboptslist = gboptsmap = None
 
 
 from mercurial import bookmarks
@@ -46,7 +52,9 @@
 from mercurial import context
 from mercurial import copies
 from mercurial import error
+from mercurial import exchange
 from mercurial import extensions
+from mercurial import httppeer
 from mercurial import hg
 from mercurial import lock as lockmod
 from mercurial import merge
@@ -57,11 +65,32 @@
 from mercurial import scmutil
 from mercurial import templatekw
 from mercurial.i18n import _
-from mercurial.commands import walkopts, commitopts, commitopts2
+from mercurial.commands import walkopts, commitopts, commitopts2, mergetoolopts
 from mercurial.node import nullid
-
-
-
+from mercurial import wireproto
+from mercurial import localrepo
+from mercurial.hgweb import hgweb_mod
+
+cmdtable = {}
+command = cmdutil.command(cmdtable)
+
+_pack = struct.pack
+
+if gboptsmap is not None:
+    memfilectx = context.memfilectx
+elif gboptslist is not None:
+    oldmemfilectx = context.memfilectx
+    def memfilectx(repo, *args, **kwargs):
+        return oldmemfilectx(*args, **kwargs)
+else:
+    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
@@ -70,7 +99,6 @@
 # - Older format compat
 
 
-
 #####################################################################
 ### Extension helper                                              ###
 #####################################################################
@@ -216,7 +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`.
@@ -302,27 +330,27 @@
 reposetup = eh.final_reposetup
 
 #####################################################################
-### Critical fix                                                  ###
+### experimental behavior                                         ###
 #####################################################################
 
-@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.
+commitopts3 = [
+    ('D', 'current-date', None,
+     _('record the current date as commit date')),
+    ('U', 'current-user', None,
+     _('record the current user as committer')),
+]
+
+def _resolveoptions(ui, opts):
+    """modify commit options dict to handle related options
+
+    For now, all it does is figure out the commit date: respect -D unless
+    -d was supplied.
     """
-    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
+    # N.B. this is extremely similar to setupheaderopts() in mq.py
+    if not opts.get('date') and opts.get('current_date'):
+        opts['date'] = '%d %d' % util.makedate()
+    if not opts.get('user') and opts.get('current_user'):
+        opts['user'] = ui.username()
 
 getrevs = obsolete.getrevs
 
@@ -338,8 +366,6 @@
 # - function to travel throught the obsolescence graph
 # - function to find useful changeset to stabilize
 
-createmarkers = obsolete.createmarkers
-
 
 ### Useful alias
 
@@ -355,8 +381,13 @@
         ui.setconfig('alias', 'odiff',
             "diff --hidden --rev 'limit(precursors(.),1)' --rev .")
     if ui.config('alias', 'grab', None) is None:
-        ui.setconfig('alias', 'grab',
-            "! $HG rebase --dest . --rev $@ && $HG up tip")
+        if os.name == 'nt':
+            ui.setconfig('alias', 'grab',
+                "! " + util.hgexecutable() + " rebase --dest . --rev $@ && "
+                 + util.hgexecutable() + " up tip")
+        else:
+            ui.setconfig('alias', 'grab',
+                "! $HG rebase --dest . --rev $@ && $HG up tip")
 
 
 ### Troubled revset symbol
@@ -366,10 +397,14 @@
     """``troubled()``
     Changesets with troubles.
     """
-    _ = revset.getargs(x, 0, 0, 'troubled takes no arguments')
-    return repo.revs('%ld and (unstable() + bumped() + divergent())',
-                     subset)
-
+    revset.getargs(x, 0, 0, 'troubled takes no arguments')
+    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
 
@@ -380,16 +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:
@@ -405,19 +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
@@ -425,7 +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:
@@ -445,6 +487,7 @@
         sr = nm.get(s)
         if sr is not None:
             cs.add(sr)
+    cs -= repo.changelog.filteredrevs # nodemap has no filtering
     return cs
 
 
@@ -464,9 +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')
@@ -474,9 +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')
@@ -484,9 +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')
@@ -494,18 +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 :-/
@@ -515,7 +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'
@@ -525,6 +572,13 @@
         return 'unstable'
     return 'stable'
 
+@eh.templatekw('troubles')
+def showtroubles(repo, ctx, **args):
+    """:troubles: List of strings. Evolution troubles affecting the changeset
+    (zero or more of "unstable", "divergent" or "bumped")."""
+    return templatekw.showlist('trouble', ctx.troubles(), plural='troubles',
+                               **args)
+
 #####################################################################
 ### Various trouble warning                                       ###
 #####################################################################
@@ -576,28 +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):
@@ -640,7 +686,6 @@
     except KeyError:
         pass  # rebase not found
 
-
 #####################################################################
 ### Old Evolve extension content                                  ###
 #####################################################################
@@ -664,129 +709,161 @@
     base = old.p1()
     updatebookmarks = _bookmarksupdater(repo, old.node())
 
-    wlock = repo.wlock()
-    try:
-
-        # commit a new version of the old changeset, including the update
-        # collect all files which might be affected
-        files = set(old.files())
-        for u in updates:
-            files.update(u.files())
-
-        # Recompute copies (avoid recording a -> b -> a)
-        copied = copies.pathcopies(base, head)
-
-
-        # prune files which were reverted by the updates
-        def samefile(f):
-            if f in head.manifest():
-                a = head.filectx(f)
-                if f in base.manifest():
-                    b = base.filectx(f)
-                    return (a.data() == b.data()
-                            and a.flags() == b.flags())
-                else:
-                    return False
+    # commit a new version of the old changeset, including the update
+    # collect all files which might be affected
+    files = set(old.files())
+    for u in updates:
+        files.update(u.files())
+
+    # Recompute copies (avoid recording a -> b -> a)
+    copied = copies.pathcopies(base, head)
+
+
+    # prune files which were reverted by the updates
+    def samefile(f):
+        if f in head.manifest():
+            a = head.filectx(f)
+            if f in base.manifest():
+                b = base.filectx(f)
+                return (a.data() == b.data()
+                        and a.flags() == b.flags())
             else:
-                return f not in base.manifest()
-        files = [f for f in files if not samefile(f)]
-        # commit version of these files as defined by head
-        headmf = head.manifest()
-        def filectxfn(repo, ctx, path):
-            if path in headmf:
-                fctx = head[path]
-                flags = fctx.flags()
-                mctx = context.memfilectx(fctx.path(), fctx.data(),
-                                          islink='l' in flags,
-                                          isexec='x' in flags,
-                                          copied=copied.get(path))
-                return mctx
-            raise IOError()
-        if commitopts.get('message') and commitopts.get('logfile'):
-            raise util.Abort(_('options --message and --logfile are mutually'
-                               ' exclusive'))
-        if commitopts.get('logfile'):
-            message= open(commitopts['logfile']).read()
-        elif commitopts.get('message'):
-            message = commitopts['message']
+                return False
         else:
-            message = old.description()
-
-        user = commitopts.get('user') or old.user()
-        date = commitopts.get('date') or None # old.date()
-        extra = dict(commitopts.get('extra', {}))
-        extra['branch'] = head.branch()
-
-        new = context.memctx(repo,
-                             parents=newbases,
-                             text=message,
-                             files=files,
-                             filectxfn=filectxfn,
-                             user=user,
-                             date=date,
-                             extra=extra)
-
-        if commitopts.get('edit'):
-            new._text = cmdutil.commitforceeditor(repo, new, [])
-        revcount = len(repo)
-        newid = repo.commitctx(new)
-        new = repo[newid]
-        created = len(repo) != revcount
-        updatebookmarks(newid)
-    finally:
-        wlock.release()
+            return f not in base.manifest()
+    files = [f for f in files if not samefile(f)]
+    # commit version of these files as defined by head
+    headmf = head.manifest()
+    def filectxfn(repo, ctx, path):
+        if path in headmf:
+            fctx = head[path]
+            flags = fctx.flags()
+            mctx = memfilectx(repo, fctx.path(), fctx.data(),
+                              islink='l' in flags,
+                              isexec='x' in flags,
+                              copied=copied.get(path))
+            return mctx
+        return None
+
+    message = cmdutil.logmessage(repo.ui, commitopts)
+    if not message:
+        message = old.description()
+
+    user = commitopts.get('user') or old.user()
+    date = commitopts.get('date') or None # old.date()
+    extra = dict(commitopts.get('extra', {}))
+    extra['branch'] = head.branch()
+
+    new = context.memctx(repo,
+                         parents=newbases,
+                         text=message,
+                         files=files,
+                         filectxfn=filectxfn,
+                         user=user,
+                         date=date,
+                         extra=extra)
+
+    if commitopts.get('edit'):
+        new._text = cmdutil.commitforceeditor(repo, new, [])
+    revcount = len(repo)
+    newid = repo.commitctx(new)
+    new = repo[newid]
+    created = len(repo) != revcount
+    updatebookmarks(newid)
 
     return newid, created
 
 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'),
+                         hint=_("This shouldn't happen. If you still "
+                                "need to move changesets, please do so "
+                                "manually with nothing to rebase - working "
+                                "directory parent is also destination"))
+
+    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 <old> --succ <new>` to obsolete the old one")
+    destbookmarks = repo.nodebookmarks(dest.node())
+    nodesrc = orig.node()
+    destphase = repo[nodesrc].phase()
+    commitmsg = orig.description()
+
+    cache = {}
+    sha1s = re.findall(sha1re, commitmsg)
+    unfi = repo.unfiltered()
+    for sha1 in sha1s:
+        ctx = None
+        try:
+            ctx = unfi[sha1]
+        except error.RepoLookupError:
+            continue
+
+        if not ctx.obsolete():
+            continue
+
+        successors = obsolete.successorssets(repo, ctx.node(), cache)
+
+        # We can't make any assumptions about how to update the hash if the
+        # cset in question was split or diverged.
+        if len(successors) == 1 and len(successors[0]) == 1:
+            newsha1 = node.hex(successors[0][0])
+            commitmsg = commitmsg.replace(sha1, newsha1[:len(sha1)])
+        else:
+            repo.ui.note(_('The stale commit message reference to %s could '
+                           'not be updated\n') % sha1)
+
+    tr = repo.transaction('relocate')
     try:
-        if orig.rev() == dest.rev():
-            raise util.Abort(_('tried to relocate a node on top of itself'),
-                             hint=_("This shouldn't happen. If you still "
-                                    "need to move changesets, please do so "
-                                    "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 a use `hg prune` to obsolete the old one")
-        destbookmarks = repo.nodebookmarks(dest.node())
-        nodesrc = orig.node()
-        destphase = repo[nodesrc].phase()
-        wlock = lock = None
         try:
-            wlock = repo.wlock()
-            lock = repo.lock()
-            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)
+            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
-        finally:
-            lockmod.release(lock, wlock)
         oldbookmarks = repo.nodebookmarks(nodesrc)
         if nodenew is not None:
-            phases.retractboundary(repo, 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()
@@ -794,22 +871,17 @@
             repo._bookmarks[book] = dest.node()
         if oldbookmarks or destbookmarks:
             repo._bookmarks.write()
-        return nodenew
-    except util.Abort:
-        # Invalidate the previous setparents
-        repo.dirstate.invalidate()
-        raise
+        tr.close()
+    finally:
+        tr.release()
+    return nodenew
 
 def _bookmarksupdater(repo, oldid):
     """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:
@@ -819,10 +891,26 @@
             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
 #############################
-cmdtable = {}
-command = cmdutil.command(cmdtable)
 metadataopts = [
     ('d', 'date', '',
      _('record the specified date in metadata'), _('DATE')),
@@ -830,47 +918,244 @@
      _('record the specified user in metadata'), _('USER')),
 ]
 
-if getattr(mercurial.cmdutil, 'tryimportone', None) is not None:
-    # hg 3.0 and greate
-    @eh.uisetup
-    def _installimportobsolete(ui):
-        entry = cmdutil.findcmd('import', commands.table)[1]
-        entry[1].append(('', 'obsolete', False,
-                        _('mark the old node as obsoleted by'
-                          'the created commit')))
-
-    @eh.wrapfunction(mercurial.cmdutil, 'tryimportone')
-    def tryimportone(orig, ui, repo, hunk, parents, opts, *args, **kwargs):
-        extracted = patch.extract(ui, hunk)
-        expected = extracted[5]
-        oldextract = patch.extract
-        try:
-            patch.extract = lambda ui, hunk: extracted
-            ret = orig(ui, repo, hunk, parents, opts, *args, **kwargs)
-        finally:
-            patch.extract = oldextract
-        created = ret[1]
-        if opts['obsolete'] and created is not None and created != expected:
-                tr = repo.transaction('import-obs')
-                try:
-                    metadata = {'user': ui.username()}
-                    repo.obsstore.create(tr, node.bin(expected), (created,),
-                                         metadata=metadata)
-                    tr.close()
-                finally:
-                    tr.release()
-        return ret
-
+@eh.uisetup
+def _installimportobsolete(ui):
+    entry = cmdutil.findcmd('import', commands.table)[1]
+    entry[1].append(('', 'obsolete', False,
+                    _('mark the old node as obsoleted by '
+                      'the created commit')))
+
+@eh.wrapfunction(mercurial.cmdutil, 'tryimportone')
+def tryimportone(orig, ui, repo, hunk, parents, opts, *args, **kwargs):
+    extracted = patch.extract(ui, hunk)
+    expected = extracted[5]
+    if expected is not None:
+        expected = node.bin(expected)
+    oldextract = patch.extract
+    try:
+        patch.extract = lambda ui, hunk: extracted
+        ret = orig(ui, repo, hunk, parents, opts, *args, **kwargs)
+    finally:
+        patch.extract = oldextract
+    created = ret[1]
+    if (opts['obsolete'] and None not in (created, expected)
+        and created != expected):
+            tr = repo.transaction('import-obs')
+            try:
+                metadata = {'user': ui.username()}
+                repo.obsstore.create(tr, expected, (created,),
+                                     metadata=metadata)
+                tr.close()
+            finally:
+                tr.release()
+    return ret
+
+
+def _deprecatealias(oldalias, newalias):
+    '''Deprecates an alias for a command in favour of another
+
+    Creates a new entry in the command table for the old alias. It creates a
+    wrapper that has its synopsis set to show that is has been deprecated.
+    The documentation will be replace with a pointer to the new alias.
+    If a user invokes the command a deprecation warning will be printed and
+    the command of the *new* alias will be invoked.
+
+    This function is loosely based on the extensions.wrapcommand function.
+    '''
+    aliases, entry = cmdutil.findcmd(newalias, cmdtable)
+    for alias, e in cmdtable.iteritems():
+        if e is entry:
+            break
+
+    synopsis = '(DEPRECATED)'
+    if len(entry) > 2:
+        fn, opts, _syn = entry
+    else:
+        fn, opts, = entry
+    deprecationwarning = _('%s have been deprecated in favor of %s\n' % (
+        oldalias, newalias))
+    def newfn(*args, **kwargs):
+        ui = args[0]
+        ui.warn(deprecationwarning)
+        util.checksignature(fn)(*args, **kwargs)
+    newfn.__doc__  = deprecationwarning
+    cmdwrapper = command(oldalias, opts, synopsis)
+    cmdwrapper(newfn)
+
+@eh.extsetup
+def deprecatealiases(ui):
+    _deprecatealias('gup', 'next')
+    _deprecatealias('gdown', 'previous')
+
+@command('debugrecordpruneparents', [], '')
+def cmddebugrecordpruneparents(ui, repo):
+    """add parents data to prune markers when possible
+
+    This commands search the repo for prune markers without parent information.
+    If the pruned node is locally known, a new markers with parent data is
+    created."""
+    pgop = 'reading markers'
+
+    # lock from the beginning to prevent race
+    wlock = lock = tr = None
+    try:
+        wlock = repo.wlock()
+        lock = repo.lock()
+        tr = repo.transaction('recordpruneparents')
+        unfi = repo.unfiltered()
+        nm = unfi.changelog.nodemap
+        store = repo.obsstore
+        pgtotal = len(store._all)
+        for idx, mark in enumerate(list(store._all)):
+            if not mark[1]:
+                rev = nm.get(mark[0])
+                if rev is not None:
+                    ctx = unfi[rev]
+                    parents = tuple(p.node() for p in ctx.parents())
+                    before = len(store._all)
+                    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)
+        tr.close()
+        ui.progress(pgop, None)
+    finally:
+        lockmod.release(tr, lock, wlock)
+
+@command('debugobsstorestat', [], '')
+def cmddebugobsstorestat(ui, repo):
+    """print statistic about obsolescence markers in the repo"""
+    store = repo.obsstore
+    unfi = repo.unfiltered()
+    nm = unfi.changelog.nodemap
+    ui.write('markers total:              %9i\n' % len(store._all))
+    sucscount = [0, 0 , 0, 0]
+    known = 0
+    parentsdata = 0
+    metakeys = {}
+    # node -> cluster mapping
+    #   a cluster is a (set(nodes), set(markers)) tuple
+    clustersmap = {}
+    # same data using parent information
+    pclustersmap= {}
+    for mark in store:
+        if mark[0] in nm:
+            known += 1
+        nbsucs = len(mark[1])
+        sucscount[min(nbsucs, 3)] += 1
+        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:
+            parentsdata += 1
+        # cluster handling
+        nodes = set()
+        nodes.add(mark[0])
+        nodes.update(mark[1])
+        c = (set(nodes), set([mark]))
+
+        toproceed = set(nodes)
+        while toproceed:
+            n = toproceed.pop()
+            other = clustersmap.get(n)
+            if (other is not None
+                and other is not c):
+                other[0].update(c[0])
+                other[1].update(c[1])
+                for on in c[0]:
+                    if on in toproceed:
+                        continue
+                    clustersmap[on] = other
+                c = other
+            clustersmap[n] = c
+        # same with parent data
+        nodes.update(parents)
+        c = (set(nodes), set([mark]))
+        toproceed = set(nodes)
+        while toproceed:
+            n = toproceed.pop()
+            other = pclustersmap.get(n)
+            if (other is not None
+                and other is not c):
+                other[0].update(c[0])
+                other[1].update(c[1])
+                for on in c[0]:
+                    if on in toproceed:
+                        continue
+                    pclustersmap[on] = other
+                c = other
+            pclustersmap[n] = c
+
+    # freezing the result
+    for c in clustersmap.values():
+        fc = (frozenset(c[0]), frozenset(c[1]))
+        for n in fc[0]:
+            clustersmap[n] = fc
+    # same with parent data
+    for c in pclustersmap.values():
+        fc = (frozenset(c[0]), frozenset(c[1]))
+        for n in fc[0]:
+            pclustersmap[n] = fc
+    ui.write('    for known precursors:   %9i\n' % known)
+    ui.write('    with parents data:      %9i\n' % parentsdata)
+    # successors data
+    ui.write('markers with no successors: %9i\n' % sucscount[0])
+    ui.write('              1 successors: %9i\n' % sucscount[1])
+    ui.write('              2 successors: %9i\n' % sucscount[2])
+    ui.write('    more than 2 successors: %9i\n' % sucscount[3])
+    # meta data info
+    ui.write('    available  keys:\n')
+    for key in sorted(metakeys):
+        ui.write('    %15s:        %9i\n' % (key, metakeys[key]))
+
+    allclusters = list(set(clustersmap.values()))
+    allclusters.sort(key=lambda x: len(x[1]))
+    ui.write('disconnected clusters:      %9i\n' % len(allclusters))
+
+    ui.write('        any known node:     %9i\n'
+             % len([c for c in allclusters
+                    if [n for n in c[0] if nm.get(n) is not None]]))
+    if allclusters:
+        nbcluster = len(allclusters)
+        ui.write('        smallest length:    %9i\n' % len(allclusters[0][1]))
+        ui.write('        longer length:      %9i\n' % len(allclusters[-1][1]))
+        median = len(allclusters[nbcluster//2][1])
+        ui.write('        median length:      %9i\n' % median)
+        mean = sum(len(x[1]) for x in allclusters) // nbcluster
+        ui.write('        mean length:        %9i\n' % mean)
+    allpclusters = list(set(pclustersmap.values()))
+    allpclusters.sort(key=lambda x: len(x[1]))
+    ui.write('    using parents data:     %9i\n' % len(allpclusters))
+    ui.write('        any known node:     %9i\n'
+             % len([c for c in allclusters
+                    if [n for n in c[0] if nm.get(n) is not None]]))
+    if allpclusters:
+        nbcluster = len(allpclusters)
+        ui.write('        smallest length:    %9i\n' % len(allpclusters[0][1]))
+        ui.write('        longer length:      %9i\n' % len(allpclusters[-1][1]))
+        median = len(allpclusters[nbcluster//2][1])
+        ui.write('        median length:      %9i\n' % median)
+        mean = sum(len(x[1]) for x in allpclusters) // nbcluster
+        ui.write('        mean length:        %9i\n' % mean)
 
 @command('^evolve|stabilize|solve',
     [('n', 'dry-run', False,
         'do not perform actions, just print what would be done'),
-    ('A', 'any', False, 'evolve any troubled changeset'),
-    ('a', 'all', False, 'evolve all troubled changesets'),
-    ('c', 'continue', False, 'continue an interrupted evolution'), ],
+     ('', 'confirm', False,
+        'ask for confirmation before performing the action'),
+    ('A', 'any', False, 'also consider troubled changesets unrelated to current working directory'),
+    ('a', 'all', False, 'evolve all troubled changesets in the repo '
+                        '(implies any)'),
+    ('c', 'continue', False, 'continue an interrupted evolution'),
+    ] + 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,
@@ -878,9 +1163,10 @@
     - update to a successor if the working directory parent is
       obsolete
 
-    By default, takes the first troubled changeset that looks relevant.
-
-    (The logic is still a bit fuzzy)
+    By default a single changeset is evolved for each invocation and only
+    troubled changesets that would evolve as a descendant of the current
+    working directory will be considered. See --all and --any options to change
+    this behavior.
 
     - For unstable, this means taking the first which could be rebased as a
       child of the working directory parent revision or one of its descendants
@@ -897,6 +1183,10 @@
     anyopt = opts['any']
     allopt = opts['all']
     dryrunopt = opts['dry_run']
+    confirmopt = opts['confirm']
+    ui.setconfig('ui', 'forcemerge', opts.get('tool', ''), 'evolve')
+
+    startnode = repo['.']
 
     if contopt:
         if anyopt:
@@ -906,8 +1196,8 @@
         graftcmd = commands.table['graft'][0]
         return graftcmd(ui, repo, old_obsolete=True, **{'continue': True})
 
-    tr = _picknexttroubled(ui, repo, anyopt or allopt)
-    if tr is None:
+    tro = _picknexttroubled(ui, repo, anyopt or allopt)
+    if tro is None:
         if repo['.'].obsolete():
             displayer = cmdutil.show_changeset(
                 ui, repo, {'template': shorttemplate})
@@ -938,10 +1228,12 @@
                     displayer.show(ctx)
 
                 if dryrunopt:
-                    print 'hg update %s' % ctx.rev()
                     return 0
                 else:
-                    return hg.update(repo, ctx.rev())
+                    res = hg.update(repo, ctx.rev())
+                    if ctx != startnode:
+                        ui.status(_('working directory is now at %s\n') % ctx)
+                    return res
 
         troubled = repo.revs('troubled()')
         if troubled:
@@ -959,33 +1251,46 @@
     seen = 1
     count = allopt and _counttroubled(ui, repo) or 1
 
-    while tr is not None:
+    while tro is not None:
         progresscb()
-        result = _evolveany(ui, repo, tr, dryrunopt, progresscb=progresscb)
+        wlock = lock = tr = None
+        try:
+            wlock = repo.wlock()
+            lock = repo.lock()
+            tr = repo.transaction("evolve")
+            result = _evolveany(ui, repo, tro, dryrunopt, confirmopt,
+                                progresscb=progresscb)
+            tr.close()
+        finally:
+            lockmod.release(tr, lock, wlock)
         progresscb()
         seen += 1
         if not allopt:
+            if repo['.'] != startnode:
+                ui.status(_('working directory is now at %s\n') % repo['.'])
             return result
         progresscb()
-        tr = _picknexttroubled(ui, repo, anyopt or allopt)
+        tro = _picknexttroubled(ui, repo, anyopt or allopt)
 
     if allopt:
         ui.progress('evolve', None)
 
-
-def _evolveany(ui, repo, tr, dryrunopt, progresscb):
+    if repo['.'] != startnode:
+        ui.status(_('working directory is now at %s\n') % repo['.'])
+
+
+def _evolveany(ui, repo, tro, dryrunopt, confirmopt, progresscb):
     repo = repo.unfiltered()
-    tr = repo[tr.rev()]
+    tro = repo[tro.rev()]
     cmdutil.bailifchanged(repo)
-    troubles = tr.troubles()
+    troubles = tro.troubles()
     if 'unstable' in troubles:
-        return _solveunstable(ui, repo, tr, dryrunopt, progresscb)
+        return _solveunstable(ui, repo, tro, dryrunopt, confirmopt, progresscb)
     elif 'bumped' in troubles:
-        return _solvebumped(ui, repo, tr, dryrunopt, progresscb)
+        return _solvebumped(ui, repo, tro, dryrunopt, confirmopt, progresscb)
     elif 'divergent' in troubles:
-        repo = repo.unfiltered()
-        tr = repo[tr.rev()]
-        return _solvedivergent(ui, repo, tr, dryrunopt, progresscb)
+        return _solvedivergent(ui, repo, tro, dryrunopt, confirmopt,
+                               progresscb)
     else:
         assert False  # WHAT? unknown troubles
 
@@ -1000,21 +1305,21 @@
 def _picknexttroubled(ui, repo, pickany=False, progresscb=None):
     """Pick a the next trouble changeset to solve"""
     if progresscb: progresscb()
-    tr = _stabilizableunstable(repo, repo['.'])
-    if tr is None:
+    tro = _stabilizableunstable(repo, repo['.'])
+    if tro is None:
         wdp = repo['.']
         if 'divergent' in wdp.troubles():
-            tr = wdp
-    if tr is None and pickany:
+            tro = wdp
+    if tro is None and pickany:
         troubled = list(repo.set('unstable()'))
         if not troubled:
             troubled = list(repo.set('bumped()'))
         if not troubled:
             troubled = list(repo.set('divergent()'))
         if troubled:
-            tr = troubled[0]
-
-    return tr
+            tro = troubled[0]
+
+    return tro
 
 def _stabilizableunstable(repo, pctx):
     """Return a changectx for an unstable changeset which can be
@@ -1032,25 +1337,28 @@
 
     # 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
 
-def _solveunstable(ui, repo, orig, dryrun=False, progresscb=None):
+def _solveunstable(ui, repo, orig, dryrun=False, confirm=False,
+                   progresscb=None):
     """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:
@@ -1063,12 +1371,13 @@
     target = targets[0]
     displayer = cmdutil.show_changeset(ui, repo, {'template': shorttemplate})
     target = repo[target]
-    repo.ui.status(_('move:'))
-    if not ui.quiet:
+    if not ui.quiet or confirm:
+        repo.ui.write(_('move:'))
         displayer.show(orig)
-    repo.ui.status(_('atop:'))
-    if not ui.quiet:
+        repo.ui.write(_('atop:'))
         displayer.show(target)
+    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)
     if dryrun:
@@ -1076,19 +1385,19 @@
     else:
         repo.ui.note(todo)
         if progresscb: progresscb()
-        lock = repo.lock()
+        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
-        finally:
-            lock.release()
-
-def _solvebumped(ui, repo, bumped, dryrun=False, progresscb=None):
+
+def _solvebumped(ui, repo, bumped, dryrun=False, confirm=False,
+                 progresscb=None):
     """Stabilize a bumped changeset"""
     # For now we deny bumped merge
     if len(bumped.parents()) > 1:
@@ -1101,12 +1410,13 @@
                          ' %s being a merge' % prec)
 
     displayer = cmdutil.show_changeset(ui, repo, {'template': shorttemplate})
-    repo.ui.status(_('recreate:'))
-    if not ui.quiet:
+    if not ui.quiet or confirm:
+        repo.ui.write(_('recreate:'))
         displayer.show(bumped)
-    repo.ui.status(_('atop:'))
-    if not ui.quiet:
+        repo.ui.write(_('atop:'))
         displayer.show(prec)
+    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())
         repo.ui.write(todo)
@@ -1115,85 +1425,83 @@
         repo.ui.write('hg commit --msg "bumped update to %s"')
         return 0
     if progresscb: progresscb()
-    wlock = repo.wlock()
+    newid = tmpctx = None
+    tmpctx = bumped
+    bmupdate = _bookmarksupdater(repo, bumped.node())
+    # Basic check for common parent. Far too complicated and fragile
+    tr = repo.transaction('bumped-stabilize')
     try:
-        newid = tmpctx = None
-        tmpctx = bumped
-        lock = repo.lock()
-        try:
-            bmupdate = _bookmarksupdater(repo, bumped.node())
-            # Basic check for common parent. Far too complicated and fragile
-            tr = repo.transaction('bumped-stabilize')
+        if not list(repo.set('parents(%d) and parents(%d)', bumped, prec)):
+            # Need to rebase the changeset at the right place
+            repo.ui.status(
+                _('rebasing to destination parent: %s\n') % prec.p1())
             try:
-                if not list(repo.set('parents(%d) and parents(%d)', bumped, prec)):
-                    # Need to rebase the changeset at the right place
-                    repo.ui.status(
-                        _('rebasing to destination parent: %s\n') % prec.p1())
-                    try:
-                        tmpid = relocate(repo, bumped, prec.p1())
-                        if tmpid is not None:
-                            tmpctx = repo[tmpid]
-                            createmarkers(repo, [(bumped, (tmpctx,))])
-                    except MergeFailure:
-                        repo.opener.write('graftstate', bumped.hex() + '\n')
-                        repo.ui.write_err(_('evolution failed!\n'))
-                        repo.ui.write_err(
-                            _('fix conflict and run "hg evolve --continue"\n'))
-                        raise
-                # Create the new commit context
-                repo.ui.status(_('computing new diff\n'))
-                files = set()
-                copied = copies.pathcopies(prec, bumped)
-                precmanifest = prec.manifest()
-                for key, val in bumped.manifest().iteritems():
-                    if precmanifest.pop(key, None) != val:
-                        files.add(key)
-                files.update(precmanifest)  # add missing files
-                # commit it
-                if files: # something to commit!
-                    def filectxfn(repo, ctx, path):
-                        if path in bumped:
-                            fctx = bumped[path]
-                            flags = fctx.flags()
-                            mctx = context.memfilectx(fctx.path(), fctx.data(),
-                                                      islink='l' in flags,
-                                                      isexec='x' in flags,
-                                                      copied=copied.get(path))
-                            return mctx
-                        raise IOError()
-                    text = 'bumped update to %s:\n\n' % prec
-                    text += bumped.description()
-
-                    new = context.memctx(repo,
-                                         parents=[prec.node(), node.nullid],
-                                         text=text,
-                                         files=files,
-                                         filectxfn=filectxfn,
-                                         user=bumped.user(),
-                                         date=bumped.date(),
-                                         extra=bumped.extra())
-
-                    newid = repo.commitctx(new)
-                if newid is None:
-                    createmarkers(repo, [(tmpctx, ())])
-                    newid = prec.node()
-                else:
-                    phases.retractboundary(repo, bumped.phase(), [newid])
-                    createmarkers(repo, [(tmpctx, (repo[newid],))],
-                                           flag=obsolete.bumpedfix)
-                bmupdate(newid)
-                tr.close()
-                repo.ui.status(_('committed as %s\n') % node.short(newid))
-            finally:
-                tr.release()
-        finally:
-            lock.release()
-        # reroute the working copy parent to the new changeset
-        repo.dirstate.setparents(newid, node.nullid)
+                tmpid = relocate(repo, bumped, prec.p1())
+                if tmpid is not None:
+                    tmpctx = repo[tmpid]
+                    obsolete.createmarkers(repo, [(bumped, (tmpctx,))])
+            except MergeFailure:
+                repo.opener.write('graftstate', bumped.hex() + '\n')
+                repo.ui.write_err(_('evolution failed!\n'))
+                repo.ui.write_err(
+                    _('fix conflict and run "hg evolve --continue"\n'))
+                raise
+        # Create the new commit context
+        repo.ui.status(_('computing new diff\n'))
+        files = set()
+        copied = copies.pathcopies(prec, bumped)
+        precmanifest = prec.manifest()
+        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
+        if files: # something to commit!
+            def filectxfn(repo, ctx, path):
+                if path in bumped:
+                    fctx = bumped[path]
+                    flags = fctx.flags()
+                    mctx = memfilectx(repo, fctx.path(), fctx.data(),
+                                      islink='l' in flags,
+                                      isexec='x' in flags,
+                                      copied=copied.get(path))
+                    return mctx
+                return None
+            text = 'bumped update to %s:\n\n' % prec
+            text += bumped.description()
+
+            new = context.memctx(repo,
+                                 parents=[prec.node(), node.nullid],
+                                 text=text,
+                                 files=files,
+                                 filectxfn=filectxfn,
+                                 user=bumped.user(),
+                                 date=bumped.date(),
+                                 extra=bumped.extra())
+
+            newid = repo.commitctx(new)
+        if newid is None:
+            obsolete.createmarkers(repo, [(tmpctx, ())])
+            newid = prec.node()
+        else:
+            phases.retractboundary(repo, tr, bumped.phase(), [newid])
+            obsolete.createmarkers(repo, [(tmpctx, (repo[newid],))],
+                                   flag=obsolete.bumpedfix)
+        bmupdate(newid)
+        tr.close()
+        repo.ui.status(_('committed as %s\n') % node.short(newid))
     finally:
-        wlock.release()
-
-def _solvedivergent(ui, repo, divergent, dryrun=False, progresscb=None):
+        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):
     base, others = divergentdata(divergent)
     if len(others) > 1:
         othersstr = "[%s]" % (','.join([str(i) for i in others]))
@@ -1208,7 +1516,7 @@
                 "| You should contact your local evolution Guru for help.\n"
                 % (divergent, othersstr))
         raise util.Abort("we do not handle divergence with split yet",
-                         hint='')
+                         hint=hint)
     other = others[0]
     if divergent.phase() <= phases.public:
         raise util.Abort("we can't resolve this conflict from the public side",
@@ -1220,25 +1528,25 @@
                          "| `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})
-    ui.status(_('merge:'))
-    if not ui.quiet:
+    if not ui.quiet or confirm:
+        ui.write(_('merge:'))
         displayer.show(divergent)
-    ui.status(_('with: '))
-    if not ui.quiet:
+        ui.write(_('with: '))
         displayer.show(other)
-    ui.status(_('base: '))
-    if not ui.quiet:
+        ui.write(_('base: '))
         displayer.show(base)
+    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)
         ui.write('hg merge %s &&\n' % other)
@@ -1249,55 +1557,50 @@
         ui.write('hg commit -m "`hg log -r %s --template={desc}`";\n'
                  % divergent)
         return
-    wlock = lock = None
-    try:
-        wlock = repo.wlock()
-        lock = repo.lock()
-        if divergent not in repo[None].parents():
-            repo.ui.status(_('updating to "local" conflict\n'))
-            hg.update(repo, divergent.rev())
-        repo.ui.note(_('merging divergent changeset\n'))
-        if progresscb: progresscb()
-        stats = merge.update(repo,
-                             other.node(),
-                             branchmerge=True,
-                             force=False,
-                             partial=None,
-                             ancestor=base.node(),
-                             mergeancestor=True)
-        hg._showstats(repo, stats)
-        if stats[3]:
-            repo.ui.status(_("use 'hg resolve' to retry unresolved file merges "
-                             "or 'hg update -C .' to abandon\n"))
-        if stats[3] > 0:
-            raise util.Abort('merge conflict between several amendments '
-                '(this is not automated yet)',
-                hint="""/!\ You can try:
+    if divergent not in repo[None].parents():
+        repo.ui.status(_('updating to "local" conflict\n'))
+        hg.update(repo, divergent.rev())
+    repo.ui.note(_('merging divergent changeset\n'))
+    if progresscb: progresscb()
+    stats = merge.update(repo,
+                         other.node(),
+                         branchmerge=True,
+                         force=False,
+                         partial=None,
+                         ancestor=base.node(),
+                         mergeancestor=True)
+    hg._showstats(repo, stats)
+    if stats[3]:
+        repo.ui.status(_("use 'hg resolve' to retry unresolved file merges "
+                         "or 'hg update -C .' to abandon\n"))
+    if stats[3] > 0:
+        raise util.Abort('merge conflict between several amendments '
+            '(this is not automated yet)',
+            hint="""/!\ You can try:
 /!\ * manual merge + resolve => new cset X
 /!\ * hg up to the parent of the amended changeset (which are named W and Z)
 /!\ * hg revert --all -r X
 /!\ * hg ci -m "same message as the amended changeset" => new cset Y
 /!\ * hg kill -n Y W Z
 """)
-        if progresscb: progresscb()
-        tr = repo.transaction('stabilize-divergent')
-        try:
-            repo.dirstate.setparents(divergent.node(), node.nullid)
-            oldlen = len(repo)
-            amend(ui, repo, message='', logfile='')
-            if oldlen == len(repo):
-                new = divergent
-                # no changes
-            else:
-                new = repo['.']
-            createmarkers(repo, [(other, (new,))])
-            phases.retractboundary(repo, other.phase(), [new.node()])
-            tr.close()
-        finally:
-            tr.release()
+    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):
+            new = divergent
+            # no changes
+        else:
+            new = repo['.']
+        obsolete.createmarkers(repo, [(other, (new,))])
+        phases.retractboundary(repo, tr, other.phase(), [new.node()])
+        tr.close()
     finally:
-        lockmod.release(lock, wlock)
-
+        tr.release()
 
 def divergentdata(ctx):
     """return base, other part of a conflict
@@ -1306,23 +1609,25 @@
 
     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')
 
 
 
 shorttemplate = '[{rev}] {desc|firstline}\n'
 
-@command('^gdown|previous',
-         [],
-         '')
-def cmdprevious(ui, repo):
+@command('^previous',
+         [('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()
@@ -1333,12 +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:
@@ -1347,10 +1655,11 @@
         ui.warn(_('multiple parents, explicitly update to one\n'))
         return 1
 
-@command('^gup|next',
-         [],
-         '')
-def cmdnext(ui, repo):
+@command('^next',
+         [('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()
@@ -1364,12 +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:
@@ -1401,8 +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]
@@ -1450,7 +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)
@@ -1466,13 +1780,13 @@
         raise util.Abort(_('nothing to prune'))
 
     wlock = lock = None
-    wlock = repo.wlock()
-    sortedrevs = lambda specs: sorted(set(scmutil.revrange(repo, specs)))
     try:
+        wlock = repo.wlock()
         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
@@ -1483,7 +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)
@@ -1498,7 +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))
@@ -1516,17 +1832,37 @@
                 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)
         for ctx in repo.unfiltered().set('bookmark() and %ld', precs):
-            ldest = list(repo.set('max((::%d) - obsolete())', ctx))
-            if ldest:
-                dest = ldest[0]
-                updatebookmarks = _bookmarksupdater(repo, ctx.node())
-                updatebookmarks(dest.node())
+            # used to be:
+            #
+            #   ldest = list(repo.set('max((::%d) - obsolete())', ctx))
+            #   if ldest:
+            #      c = ldest[0]
+            #
+            # but then revset took a lazy arrow in the knee and became much
+            # slower. The new forms makes as much sense and a much faster.
+            for dest in ctx.ancestors():
+                if not dest.obsolete():
+                    updatebookmarks = _bookmarksupdater(repo, ctx.node())
+                    updatebookmarks(dest.node())
+                    break
     finally:
         lockmod.release(lock, wlock)
 
@@ -1537,7 +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,
+    ] + 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
@@ -1559,36 +1895,58 @@
     """
     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)
     return commitcmd[0](ui, repo, *pats, **opts)
 
-def _commitfiltered(repo, ctx, match):
+
+def _touchedbetween(repo, source, dest, match=None):
+    touched = set()
+    for files in repo.status(source, dest, match=match)[:3]:
+        touched.update(files)
+    return touched
+
+def _commitfiltered(repo, ctx, match, target=None):
     """Recommit ctx with changed files not in match. Return the new
     node identifier, or None if nothing changed.
     """
     base = ctx.p1()
-    m, a, r = repo.status(base, ctx)[:3]
-    allfiles = set(m + a + r)
-    files = set(f for f in allfiles if not match(f))
-    if files == allfiles:
+    if target is None:
+        target = base
+    # ctx
+    initialfiles = _touchedbetween(repo, base, ctx)
+    if base == target:
+        affected = set(f for f in initialfiles if match(f))
+        newcontent = set()
+    else:
+        affected = _touchedbetween(repo, target, ctx, match=match)
+        newcontent = _touchedbetween(repo, target, base, match=match)
+    # The commit touchs all existing files
+    # + all file that needs a new content
+    # - the file affected bny uncommit with the same content than base.
+    files = (initialfiles - affected) | newcontent
+    if not newcontent and files == initialfiles:
         return None
 
     # Filter copies
-    copied = copies.pathcopies(base, ctx)
+    copied = copies.pathcopies(target, ctx)
     copied = dict((src, dst) for src, dst in copied.iteritems()
                   if dst in files)
-    def filectxfn(repo, memctx, path):
-        if path not in ctx:
-            raise IOError()
-        fctx = ctx[path]
+    def filectxfn(repo, memctx, path, contentctx=ctx, redirect=newcontent):
+        if path in redirect:
+            return filectxfn(repo, memctx, path, contentctx=target, redirect=())
+        if path not in contentctx:
+            return None
+        fctx = contentctx[path]
         flags = fctx.flags()
-        mctx = context.memfilectx(fctx.path(), fctx.data(),
-                                  islink='l' in flags,
-                                  isexec='x' in flags,
-                                  copied=copied.get(path))
+        mctx = memfilectx(repo, fctx.path(), fctx.data(),
+                          islink='l' in flags,
+                          isexec='x' in flags,
+                          copied=copied.get(path))
         return mctx
 
     new = context.memctx(repo,
@@ -1649,6 +2007,7 @@
 
 @command('^uncommit',
     [('a', 'all', None, _('uncommit all changes when no arguments given')),
+     ('r', 'rev', '', _('revert commit content to REV instead')),
      ] + commands.walkopts,
     _('[OPTION]... [NAME]'))
 def uncommit(ui, repo, *pats, **opts):
@@ -1662,51 +2021,69 @@
     The --include option specifies patterns to uncommit.
     The --exclude option specifies patterns to keep in the commit.
 
+    The --rev argument let you change the commit file to a content of another
+    revision. It still does not change the content of your file in the working
+    directory.
+
     Return 0 if changed files are uncommitted.
     """
-    lock = repo.lock()
+
+    wlock = lock = tr = None
     try:
         wlock = repo.wlock()
-        try:
-            wctx = repo[None]
-            if len(wctx.parents()) <= 0:
-                raise util.Abort(_("cannot uncommit null changeset"))
-            if len(wctx.parents()) > 1:
-                raise util.Abort(_("cannot uncommit while merging"))
-            old = repo['.']
-            if old.phase() == phases.public:
-                raise util.Abort(_("cannot rewrite immutable changeset"))
-            if len(old.parents()) > 1:
-                raise util.Abort(_("cannot uncommit merge changeset"))
-            oldphase = old.phase()
-            updatebookmarks = _bookmarksupdater(repo, old.node())
-            # Recommit the filtered changeset
-            newid = None
-            if (pats or opts.get('include') or opts.get('exclude')
-                or opts.get('all')):
-                match = scmutil.match(old, pats, opts)
-                newid = _commitfiltered(repo, old, match)
-            if newid is None:
-                raise util.Abort(_('nothing to uncommit'))
-            # Move local changes on filtered changeset
-            createmarkers(repo, [(old, (repo[newid],))])
-            phases.retractboundary(repo, oldphase, [newid])
-            repo.dirstate.setparents(newid, node.nullid)
-            _uncommitdirstate(repo, old, match)
-            updatebookmarks(newid)
-            if not repo[newid].files():
-                ui.warn(_("new changeset is empty\n"))
-                ui.status(_('(use "hg prune ." to remove it)\n'))
-        finally:
-            wlock.release()
+        lock = repo.lock()
+        wctx = repo[None]
+        if len(wctx.parents()) <= 0:
+            raise util.Abort(_("cannot uncommit null changeset"))
+        if len(wctx.parents()) > 1:
+            raise util.Abort(_("cannot uncommit while merging"))
+        old = repo['.']
+        if old.phase() == phases.public:
+            raise util.Abort(_("cannot rewrite immutable changeset"))
+        if len(old.parents()) > 1:
+            raise util.Abort(_("cannot uncommit merge changeset"))
+        oldphase = old.phase()
+        updatebookmarks = _bookmarksupdater(repo, old.node())
+
+
+        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')
+        newid = None
+        if (pats or opts.get('include') or opts.get('exclude')
+            or opts.get('all')):
+            match = scmutil.match(old, pats, opts)
+            newid = _commitfiltered(repo, old, match, target=rev)
+        if newid is None:
+            raise util.Abort(_('nothing to uncommit'),
+                             hint=_("use --all to uncommit all files"))
+        # Move local changes on filtered changeset
+        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"))
+            ui.status(_('(use "hg prune ." to remove it)\n'))
+        tr.close()
     finally:
-        lock.release()
+        lockmod.release(tr, lock, wlock)
 
 @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', [])
@@ -1721,15 +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'),
@@ -1738,7 +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
     """
@@ -1753,76 +2129,110 @@
         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, _ = 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],))])
-                phases.retractboundary(repo, 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', [], _("explicitly specify the full set of revision to fold")),
+    [('r', 'rev', [], _("revision to fold")),
+     ('', 'exact', None, _("only fold specified revisions"))
     ] + commitopts + commitopts2,
-    # allow to choose the seed ?
-    _('rev'))
+    _('hg fold [OPTION]... [-r] REV'))
 def fold(ui, repo, *revs, **opts):
-    """Fold multiple revisions into a single one
-
-    The revisions from your current working directory to the given one are folded
-    into a single successor revision.
-
-    you can alternatively use --rev to explicitly specify revisions to be folded,
-    ignoring the current working directory parent.
+    """fold multiple revisions into a single one
+
+    Folds a set of revisions with the parent of the working directory.
+    All revisions linearly between the given revisions and the parent
+    of the working directory will also be folded.
+
+    Use --exact for folding only the specified revisions while ignoring the
+    parent of the working directory. In this case, the given revisions must
+    form a linear unbroken chain.
+
+    .. container:: verbose
+
+     Some examples:
+
+     - Fold the current revision with its parent::
+
+         hg fold .^
+
+     - Fold all draft revisions with working directory parent::
+
+         hg fold 'draft()'
+
+       See :hg:`help phases` for more about draft revisions and
+       :hg:`help revsets` for more about the `draft()` keyword
+
+     - Fold revisions 3, 4, 5, and 6 with the working directory parent::
+
+         hg fold 3:6
+
+     - Only fold revisions linearly between foo and @::
+
+         hg fold foo::@ --exact
     """
     revs = list(revs)
-    if revs:
-        if opts.get('rev', ()):
-            raise util.Abort("cannot specify both --rev and a target revision")
-        targets = scmutil.revrange(repo, revs)
-        revs = repo.revs('(%ld::.) or (.::%ld)', targets, targets)
-    elif 'rev' in opts:
-        revs = scmutil.revrange(repo, opts['rev'])
-    else:
-        revs = ()
+    revs.extend(opts['rev'])
     if not revs:
-        ui.write_err('no revision to fold\n')
+        raise util.Abort(_('no revisions specified'))
+
+    revs = scmutil.revrange(repo, revs)
+
+    if not opts['exact']:
+        # Try to extend given revision starting from the working directory
+        extrevs = repo.revs('(%ld::.) or (.::%ld)', revs, revs)
+        discardedrevs = [r for r in revs if r not in extrevs]
+        if discardedrevs:
+            raise util.Abort(_("cannot fold non-linear revisions"),
+                               hint=_("given revisions are unrelated to parent "
+                                      "of working directory"))
+        revs = extrevs
+
+    if len(revs) == 1:
+        ui.write_err(_('single revision specified, nothing to fold\n'))
         return 1
+
     roots = repo.revs('roots(%ld)', revs)
     if len(roots) > 1:
-        raise util.Abort("set has multiple roots")
-    root = repo[roots[0]]
+        raise util.Abort(_("cannot fold non-linear revisions "
+                           "(multiple roots given)"))
+    root = repo[roots.first()]
     if root.phase() <= phases.public:
-        raise util.Abort("can't fold public revisions")
+        raise util.Abort(_("cannot fold public revisions"))
     heads = repo.revs('heads(%ld)', revs)
     if len(heads) > 1:
-        raise util.Abort("set has multiple heads")
-    head = repo[heads[0]]
+        raise util.Abort(_("cannot fold non-linear revisions "
+                           "(multiple heads given)"))
+    head = repo[heads.first()]
     wlock = lock = None
     try:
         wlock = repo.wlock()
@@ -1842,11 +2252,11 @@
                 commitopts['message'] =  "\n".join(msgs)
                 commitopts['edit'] = True
 
-            newid, _ = rewrite(repo, root, allctx, head,
-                             [root.p1().node(), root.p2().node()],
-                             commitopts=commitopts)
-            phases.retractboundary(repo, targetphase, [newid])
-            createmarkers(repo, [(ctx, (repo[newid],))
+            newid, unusedvariable = rewrite(repo, root, allctx, head,
+                                            [root.p1().node(), root.p2().node()],
+                                            commitopts=commitopts)
+            phases.retractboundary(repo, tr, targetphase, [newid])
+            obsolete.createmarkers(repo, [(ctx, (repo[newid],))
                                  for ctx in allctx])
             tr.close()
         finally:
@@ -1866,8 +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())
@@ -1882,25 +2294,650 @@
 
         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)
 
     entry = cmdutil.findcmd('commit', commands.table)[1]
     entry[1].append(('o', 'obsolete', [],
-                     _("make commit obsolete this revision")))
+                     _("make commit obsolete this revision (DEPRECATED)")))
     entry = cmdutil.findcmd('graft', commands.table)[1]
     entry[1].append(('o', 'obsolete', [],
-                     _("make graft obsoletes this revision")))
+                     _("make graft obsoletes this revision (DEPRECATED)")))
     entry[1].append(('O', 'old-obsolete', False,
-                     _("make graft obsoletes its source")))
-
+                     _("make graft obsoletes its source (DEPRECATED)")))
+
+#####################################################################
+### Obsolescence marker exchange experimenation                   ###
+#####################################################################
+
+def obsexcmsg(ui, message, important=False):
+    verbose = ui.configbool('experimental', 'verbose-obsolescence-exchange',
+                             False)
+    if verbose:
+        message = 'OBSEXC: ' + message
+    if important or verbose:
+        ui.status(message)
+
+def obsexcprg(ui, *args, **kwargs):
+    topic = 'obsmarkers exchange'
+    if ui.configbool('experimental', 'verbose-obsolescence-exchange', False):
+        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)
+
+class pushobsmarkerStringIO(StringIO):
+    """hacky string io for progress"""
+
+    @util.propertycache
+    def length(self):
+        return len(self.getvalue())
+
+    def read(self, size=None):
+        obsexcprg(self.ui, self.tell(), unit="bytes", total=self.length)
+        return StringIO.read(self, size)
+
+    def __iter__(self):
+        d = self.read(4096)
+        while d:
+            yield d
+            d = self.read(4096)
+
+@eh.wrapfunction(exchange, '_pushobsolete')
+def _pushobsolete(orig, pushop):
+    """utility function to push obsolete markers to a remote"""
+    stepsdone = getattr(pushop, 'stepsdone', None)
+    if stepsdone is not None:
+        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
+    if (obsolete._enabled  and repo.obsstore and
+        'obsolete' in remote.listkeys('namespaces')):
+        markers = pushop.outobsmarkers
+        if not markers:
+            obsexcmsg(repo.ui, "no marker to push\n")
+        elif remote.capable('_evoext_pushobsmarkers_0'):
+            obsdata = pushobsmarkerStringIO()
+            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"
+                               % (len(markers), len(obsdata.getvalue())),
+                      True)
+            remote.evoext_pushobsmarkers_0(obsdata)
+            obsexcprg(repo.ui, None)
+        else:
+            rslts = []
+            remotedata = _pushkeyescape(markers).items()
+            totalbytes = sum(len(d) for k,d in remotedata)
+            sentbytes = 0
+            obsexcmsg(repo.ui, "pushing %i obsolescence markers in %i pushkey payload (%i bytes)\n"
+                                % (len(markers), len(remotedata), totalbytes),
+                      True)
+            for key, data in remotedata:
+                obsexcprg(repo.ui, sentbytes, item=key, unit="bytes",
+                          total=totalbytes)
+                rslts.append(remote.pushkey('obsolete', key, '', data))
+                sentbytes += len(data)
+                obsexcprg(repo.ui, sentbytes, item=key, unit="bytes",
+                          total=totalbytes)
+            obsexcprg(repo.ui, None)
+            if [r for r in rslts if not r]:
+                msg = _('failed to push some obsolete markers!\n')
+                repo.ui.warn(msg)
+        obsexcmsg(repo.ui, "DONE\n")
+
+
+@eh.addattr(wireproto.wirepeer, 'evoext_pushobsmarkers_0')
+def client_pushobsmarkers(self, obsfile):
+    """wireprotocol peer method"""
+    self.requirecap('_evoext_pushobsmarkers_0',
+                    _('push obsolete markers faster'))
+    ret, output = self._callpush('evoext_pushobsmarkers_0', obsfile)
+    for l in output.splitlines(True):
+        self.ui.status(_('remote: '), l)
+    return ret
+
+@eh.addattr(httppeer.httppeer, 'evoext_pushobsmarkers_0')
+def httpclient_pushobsmarkers(self, obsfile):
+    """httpprotocol peer method
+    (Cannot simply use _callpush as http is doing some special handling)"""
+    self.requirecap('_evoext_pushobsmarkers_0',
+                    _('push obsolete markers faster'))
+    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"""
+    fp = StringIO()
+    proto.redirect()
+    proto.getfile(fp)
+    data = fp.getvalue()
+    fp.close()
+    tr = lock = None
+    try:
+        lock = repo.lock()
+        tr = repo.transaction('pushkey: obsolete markers')
+        new = repo.obsstore.mergemarkers(tr, data)
+        if new is not None:
+            obsexcmsg(repo.ui, "%i obsolescence markers added\n" % new, True)
+        tr.close()
+    finally:
+        lockmod.release(tr, lock)
+    repo.hook('evolve_pushobsmarkers')
+    return wireproto.pushres(0)
+
+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
+    remote = pullop.remote
+    unfi = repo.unfiltered()
+    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"
+                           % len(revs))
+        common = findcommonobsmarkers(repo.ui, repo, remote, revs)
+    return {'heads': pullop.pulledsubset, 'common': common}
+
+@eh.uisetup
+def addgetbundleargs(self):
+    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
+    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 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 = _buildpullobsmarkersboundaries(pullop)
+    if not set(boundaries['heads']) - set(boundaries['common']):
+        obsexcmsg(ui, "nothing to pull\n")
+        return None
+
+    obsexcmsg(ui, "pull obsolescence markers\n", True)
+    new = 0
+
+    if wirepull:
+        obsdata = pullop.remote.evoext_pullobsmarkers_0(**boundaries)
+        obsdata = obsdata.read()
+        if len(obsdata) > 5:
+            obsexcmsg(ui, "merging obsolescence markers (%i bytes)\n"
+                           % len(obsdata))
+            tr = pullop.gettransaction()
+            old = len(pullop.repo.obsstore._all)
+            pullop.repo.obsstore.mergemarkers(tr, obsdata)
+            new = len(pullop.repo.obsstore._all) - old
+            obsexcmsg(ui, "%i obsolescence markers added\n" % new, True)
+        else:
+            obsexcmsg(ui, "no unknown remote markers\n")
+        obsexcmsg(ui, "DONE\n")
+    if new:
+        pullop.repo.invalidatevolatilesets()
+    return tr
+
+def _getobsmarkersstream(repo, heads=None, common=None):
+    revset = ''
+    args = []
+    repo = repo.unfiltered()
+    if heads is None:
+        revset = 'all()'
+    elif heads:
+        revset += "(::%ln)"
+        args.append(heads)
+    else:
+        assert False, 'pulling no heads?'
+    if common:
+        revset += ' - (::%ln)'
+        args.append(common)
+    nodes = [c.node() for c in repo.set(revset, *args)]
+    markers = repo.obsstore.relevantmarkers(nodes)
+    obsdata = StringIO()
+    for chunk in obsolete.encodemarkers(markers, True):
+        obsdata.write(chunk)
+    obsdata.seek(0)
+    return obsdata
+
+@eh.addattr(wireproto.wirepeer, 'evoext_pullobsmarkers_0')
+def client_pullobsmarkers(self, heads=None, common=None):
+    self.requirecap('_evoext_pullobsmarkers_0', _('look up remote obsmarkers'))
+    opts = {}
+    if heads is not None:
+        opts['heads'] = wireproto.encodelist(heads)
+    if common is not None:
+        opts['common'] = wireproto.encodelist(common)
+    if util.safehasattr(self, '_callcompressable'):
+        f = self._callcompressable("evoext_pullobsmarkers_0", **opts)
+    else:
+        f = self._callstream("evoext_pullobsmarkers_0", **opts)
+        f = self._decompress(f)
+    length = int(f.read(20))
+    chunk = 4096
+    current = 0
+    data = StringIO()
+    ui = self.ui
+    obsexcprg(ui, current, unit="bytes", total=length)
+    while current < length:
+        readsize = min(length-current, chunk)
+        data.write(f.read(readsize))
+        current += readsize
+        obsexcprg(ui, current, unit="bytes", total=length)
+    obsexcprg(ui, None)
+    data.seek(0)
+    return data
+
+@eh.addattr(localrepo.localpeer, 'evoext_pullobsmarkers_0')
+def local_pullobsmarkers(self, heads=None, common=None):
+    return _getobsmarkersstream(self._repo, heads=heads, common=common)
+
+def srv_pullobsmarkers(repo, proto, others):
+    opts = wireproto.options('', ['heads', 'common'], others)
+    for k, v in opts.iteritems():
+        if k in ('heads', 'common'):
+            opts[k] = wireproto.decodelist(v)
+    obsdata = _getobsmarkersstream(repo, **opts)
+    finaldata = StringIO()
+    obsdata = obsdata.getvalue()
+    finaldata.write('%20i' % len(obsdata))
+    finaldata.write(obsdata)
+    finaldata.seek(0)
+    return wireproto.streamres(proto.groupchunks(finaldata))
+
+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
+        sha = util.sha1()
+        # add data from p1
+        for p in ctx.parents():
+            p = p.rev()
+            if p < 0:
+                p = nullid
+            else:
+                p = cache[p][1]
+            if p != nullid:
+                entry += 1
+                sha.update(p)
+        tmarkers = repo.obsstore.relevantmarkers([ctx.node()])
+        if 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
+                sha.update(m)
+        if entry:
+            cache.append((ctx.node(), sha.digest()))
+        else:
+            cache.append((ctx.node(), nullid))
+    return cache
+
+@command('debugobsrelsethashtree',
+        [('', '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."""
+    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)))
+
+_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):
+    """wrapper to advertise new capability"""
+    caps = orig(repo, proto)
+    if obsolete._enabled:
+        caps += ' _evoext_pushobsmarkers_0'
+        caps += ' _evoext_pullobsmarkers_0'
+        caps += ' _evoext_obshash_0'
+        caps += ' _evoext_obshash_1'
+        caps += ' _evoext_getbundle_obscommon'
+    return caps
+
+
+@eh.extsetup
+def _installwireprotocol(ui):
+    localrepo.moderncaps.add('_evoext_pullobsmarkers_0')
+    hgweb_mod.perms['evoext_pushobsmarkers_0'] = 'push'
+    hgweb_mod.perms['evoext_pullobsmarkers_0'] = 'pull'
+    wireproto.commands['evoext_pushobsmarkers_0'] = (srv_pushobsmarkers, '')
+    wireproto.commands['evoext_pullobsmarkers_0'] = (srv_pullobsmarkers, '*')
+    # wrap command content
+    oldcap, args = wireproto.commands['capabilities']
+    def newcap(repo, proto):
+        return capabilities(oldcap, repo, proto)
+    wireproto.commands['capabilities'] = (newcap, args)
--- a/hgext/obsolete.py	Tue Jun 23 16:45:55 2015 -0700
+++ b/hgext/obsolete.py	Tue Jun 23 16:47:24 2015 -0700
@@ -96,7 +96,7 @@
                             'user': ui.username(),
                             }
                         try:
-                            store.create(tr, prec, sucs, 0, meta)
+                            store.create(tr, prec, sucs, 0, metadata=meta)
                             cnt += 1
                         except ValueError:
                             repo.ui.write_err("invalid old marker line: %s"
@@ -135,7 +135,7 @@
                         succs = [bin(n) for n in oldsubjects]
                         succs = [n for n in succs if n != nullid]
                         store.create(tr, bin(oldobject), succs,
-                                     0, meta)
+                                     0, metadata=meta)
                         cnt += 1
                     except ValueError:
                         repo.ui.write_err("invalid marker %s -> %s\n"
--- a/hgext/simple4server.py	Tue Jun 23 16:45:55 2015 -0700
+++ b/hgext/simple4server.py	Tue Jun 23 16:47:24 2015 -0700
@@ -8,5 +8,297 @@
 For client side usages it is recommended to use the evolve extension for
 improved user interface.'''
 
+testedwith = '3.3.3 3.4-rc'
+buglink = 'http://bz.selenic.com/'
+
 import mercurial.obsolete
 mercurial.obsolete._enabled = True
+
+import struct
+from mercurial import util
+from mercurial import wireproto
+from mercurial import extensions
+from mercurial import obsolete
+from cStringIO import StringIO
+from mercurial import node
+from mercurial.hgweb import hgweb_mod
+from mercurial import bundle2
+from mercurial import localrepo
+from mercurial import exchange
+from mercurial import node
+_pack = struct.pack
+
+gboptslist = gboptsmap = None
+try:
+    from mercurial import obsolete
+    if not obsolete._enabled:
+        obsolete._enabled = True
+    from mercurial import wireproto
+    gboptslist = getattr(wireproto, 'gboptslist', None)
+    gboptsmap = getattr(wireproto, 'gboptsmap', None)
+except (ImportError, AttributeError):
+    raise util.Abort('Your Mercurial is too old for this version of Evolve\n'
+                     'requires version 3.0.1 or above')
+
+# Start of simple4server specific content
+
+from mercurial import pushkey
+
+# specific content also include the wrapping int extsetup
+def _nslist(orig, repo):
+    rep = orig(repo)
+    if not repo.ui.configbool('__temporary__', 'advertiseobsolete', True):
+        rep.pop('obsolete')
+    return rep
+
+# End of simple4server specific content
+
+
+
+# from evolve extension: 1a23c7c52a43
+def srv_pushobsmarkers(repo, proto):
+    """That receives a stream of markers and apply then to the repo"""
+    fp = StringIO()
+    proto.redirect()
+    proto.getfile(fp)
+    data = fp.getvalue()
+    fp.close()
+    lock = repo.lock()
+    try:
+        tr = repo.transaction('pushkey: obsolete markers')
+        try:
+            repo.obsstore.mergemarkers(tr, data)
+            tr.close()
+        finally:
+            tr.release()
+    finally:
+        lock.release()
+    repo.hook('evolve_pushobsmarkers')
+    return wireproto.pushres(0)
+
+# from evolve extension: 1a23c7c52a43
+def _getobsmarkersstream(repo, heads=None, common=None):
+    """Get a binary stream for all markers relevant to `::<heads> - ::<common>`
+    """
+    revset = ''
+    args = []
+    repo = repo.unfiltered()
+    if heads is None:
+        revset = 'all()'
+    elif heads:
+        revset += "(::%ln)"
+        args.append(heads)
+    else:
+        assert False, 'pulling no heads?'
+    if common:
+        revset += ' - (::%ln)'
+        args.append(common)
+    nodes = [c.node() for c in repo.set(revset, *args)]
+    markers = repo.obsstore.relevantmarkers(nodes)
+    obsdata = StringIO()
+    for chunk in obsolete.encodemarkers(markers, True):
+        obsdata.write(chunk)
+    obsdata.seek(0)
+    return obsdata
+
+if not util.safehasattr(obsolete.obsstore, 'relevantmarkers'):
+    # from evolve extension: 1a23c7c52a43
+    class pruneobsstore(obsolete.obsstore):
+        """And extended obsstore class that read parent information from v1 format
+
+        Evolve extension adds parent information in prune marker. We use it to make
+        markers relevant to pushed changeset."""
+
+        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
+
+    # from evolve extension: 1a23c7c52a43
+    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 is 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
+
+# from evolve extension: cf35f38d6a10
+def srv_pullobsmarkers(repo, proto, others):
+    """serves a binary stream of markers.
+
+    Serves relevant to changeset between heads and common. The stream is prefix
+    by a -string- representation of an integer. This integer is the size of the
+    stream."""
+    opts = wireproto.options('', ['heads', 'common'], others)
+    for k, v in opts.iteritems():
+        if k in ('heads', 'common'):
+            opts[k] = wireproto.decodelist(v)
+    obsdata = _getobsmarkersstream(repo, **opts)
+    finaldata = StringIO()
+    obsdata = obsdata.getvalue()
+    finaldata.write('%20i' % len(obsdata))
+    finaldata.write(obsdata)
+    finaldata.seek(0)
+    return wireproto.streamres(proto.groupchunks(finaldata))
+
+
+# from evolve extension: 3249814dabd1
+def _obsrelsethashtreefm0(repo):
+    return _obsrelsethashtree(repo, obsolete._fm0encodeonemarker)
+
+# 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
+        sha = util.sha1()
+        # add data from p1
+        for p in ctx.parents():
+            p = p.rev()
+            if p < 0:
+                p = node.nullid
+            else:
+                p = cache[p][1]
+            if p != node.nullid:
+                entry += 1
+                sha.update(p)
+        tmarkers = repo.obsstore.relevantmarkers([ctx.node()])
+        if 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
+                sha.update(m)
+        if entry:
+            cache.append((ctx.node(), sha.digest()))
+        else:
+            cache.append((ctx.node(), node.nullid))
+    return cache
+
+# 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
+    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: 3249814dabd1
+def srv_obshash(repo, proto, nodes):
+    return wireproto.encodelist(_obshash(repo, wireproto.decodelist(nodes)))
+
+# 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)
+    advertise = repo.ui.configbool('__temporary__', 'advertiseobsolete', True)
+    if obsolete._enabled and advertise:
+        caps += ' _evoext_pushobsmarkers_0'
+        caps += ' _evoext_pullobsmarkers_0'
+        caps += ' _evoext_obshash_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')
+    gboptsmap['evo_obscommon'] = 'nodes'
+    if not util.safehasattr(obsolete.obsstore, 'relevantmarkers'):
+        obsolete.obsstore = pruneobsstore
+        obsolete.obsstore.relevantmarkers = relevantmarkers
+    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 module content
+    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']
+    def newcap(repo, proto):
+        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)
+
--- a/setup.py	Tue Jun 23 16:45:55 2015 -0700
+++ b/setup.py	Tue Jun 23 16:47:24 2015 -0700
@@ -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='3.3.2',
+    version=get_version('hgext/evolve.py'),
     author='Pierre-Yves David',
     maintainer='Pierre-Yves David',
     maintainer_email='pierre-yves.david@ens-lyon.org',
@@ -14,5 +25,5 @@
     long_description=open('README').read(),
     keywords='hg mercurial',
     license='GPLv2+',
-    py_modules=['hgext.evolve', 'hgext.pushexperiment'],
+    py_modules=['hgext.evolve'],
 )
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/_exc-util.sh	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,110 @@
+#!/bin/sh
+
+cat >> $HGRCPATH <<EOF
+[web]
+push_ssl = false
+allow_push = *
+
+[ui]
+logtemplate ="{node|short} ({phase}): {desc}\n"
+
+[phases]
+publish=False
+
+[experimental]
+verbose-obsolescence-exchange=false
+bundle2-exp=true
+bundle2-output-capture=True
+
+[alias]
+debugobsolete=debugobsolete -d '0 0'
+
+[extensions]
+hgext.strip=
+EOF
+echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
+
+mkcommit() {
+   echo "$1" > "$1"
+   hg add "$1"
+   hg ci -m "$1"
+}
+getid() {
+   hg log --hidden --template '{node}\n' --rev "$1"
+}
+
+setuprepos() {
+    echo creating test repo for test case $1
+    mkdir $1
+    cd $1
+    echo - pulldest
+    hg init pushdest
+    cd pushdest
+    mkcommit O
+    hg phase --public .
+    cd ..
+    echo - main
+    hg clone -q pushdest main
+    echo - pushdest
+    hg clone -q main pulldest
+    echo 'cd into `main` and proceed with env setup'
+}
+
+dotest() {
+# dotest TESTNAME [TARGETNODE]
+
+    testcase=$1
+    shift
+    target="$1"
+    if [ $# -gt 0 ]; then
+        shift
+    fi
+    targetnode=""
+    desccall=""
+    cd $testcase
+    echo "## Running testcase $testcase"
+    if [ -n "$target" ]; then
+        desccall="desc("\'"$target"\'")"
+        targetnode="`hg -R main id -qr \"$desccall\"`"
+        echo "# testing echange of \"$target\" ($targetnode)"
+    fi
+    echo "## initial state"
+    echo "# obstore: main"
+    hg -R main     debugobsolete | sort
+    echo "# obstore: pushdest"
+    hg -R pushdest debugobsolete | sort
+    echo "# obstore: pulldest"
+    hg -R pulldest debugobsolete | sort
+
+    if [ -n "$target" ]; then
+        echo "## pushing \"$target\"" from main to pushdest
+        hg -R main push -r "$desccall" $@ pushdest
+    else
+        echo "## pushing from main to pushdest"
+        hg -R main push pushdest $@
+    fi
+    echo "## post push state"
+    echo "# obstore: main"
+    hg -R main     debugobsolete | sort
+    echo "# obstore: pushdest"
+    hg -R pushdest debugobsolete | sort
+    echo "# obstore: pulldest"
+    hg -R pulldest debugobsolete | sort
+    if [ -n "$target" ]; then
+        echo "## pulling \"$targetnode\"" from main into pulldest
+        hg -R pulldest pull -r $targetnode $@ main
+    else
+        echo "## pulling from main into pulldest"
+        hg -R pulldest pull main $@
+    fi
+    echo "## post pull state"
+    echo "# obstore: main"
+    hg -R main     debugobsolete | sort
+    echo "# obstore: pushdest"
+    hg -R pushdest debugobsolete | sort
+    echo "# obstore: pulldest"
+    hg -R pulldest debugobsolete | sort
+
+    cd ..
+
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/dummyssh	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+
+import sys
+import os
+
+os.chdir(os.getenv('TESTTMP'))
+
+if sys.argv[1] != "user@dummy":
+    sys.exit(-1)
+
+os.environ["SSH_CLIENT"] = "127.0.0.1 1 2"
+
+log = open("dummylog", "ab")
+log.write("Got arguments")
+for i, arg in enumerate(sys.argv[1:]):
+    log.write(" %d:%s" % (i + 1, arg))
+log.write("\n")
+log.close()
+hgcmd = sys.argv[2]
+if os.name == 'nt':
+    # hack to make simple unix single quote quoting work on windows
+    hgcmd = hgcmd.replace("'", '"')
+r = os.system(hgcmd)
+sys.exit(bool(r))
--- a/tests/test-amend.t	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-amend.t	Tue Jun 23 16:47:24 2015 -0700
@@ -1,8 +1,5 @@
   $ cat >> $HGRCPATH <<EOF
-  > [defaults]
-  > amend=-d "0 0"
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
@@ -17,15 +14,15 @@
   $ hg ci -Am adda
   adding a
 
-Test amend captures branches
+Test that amend captures branches
 
   $ hg branch foo
   marked working directory as branch foo
   (branches are permanent and global, did you want a bookmark?)
-  $ hg amend
+  $ hg amend -d '0 0'
   $ hg debugobsolete
-  07f4944404050f47db2e5c5071e0e84e7a27bba9 6a022cbb61d5ba0f03f98ff2d36319dfea1034ae 0 {'date': '* *', 'user': 'test'} (glob)
-  b2e32ffb533cbe1d5759638c0cd4e8abc43b2738 0 {'date': '* *', 'user': 'test'} (glob)
+  07f4944404050f47db2e5c5071e0e84e7a27bba9 6a022cbb61d5ba0f03f98ff2d36319dfea1034ae 0 (*) {'user': 'test'} (glob)
+  b2e32ffb533cbe1d5759638c0cd4e8abc43b2738 0 {07f4944404050f47db2e5c5071e0e84e7a27bba9} (*) {'user': 'test'} (glob)
   $ hg branch
   foo
   $ hg branches
@@ -35,7 +32,7 @@
   
 Test no-op
 
-  $ hg amend
+  $ hg amend -d '0 0'
   nothing changed
   [1]
   $ glog
@@ -44,7 +41,7 @@
 
 Test forcing the message to the same value, no intermediate revision.
 
-  $ hg amend -m 'adda'
+  $ hg amend -d '0 0' -m 'adda'
   nothing changed
   [1]
   $ glog
@@ -69,8 +66,8 @@
   $ hg pdiff
   $ hg ci -m reseta
   $ hg debugobsolete
-  07f4944404050f47db2e5c5071e0e84e7a27bba9 6a022cbb61d5ba0f03f98ff2d36319dfea1034ae 0 {'date': '* *', 'user': 'test'} (glob)
-  b2e32ffb533cbe1d5759638c0cd4e8abc43b2738 0 {'date': '* *', 'user': 'test'} (glob)
+  07f4944404050f47db2e5c5071e0e84e7a27bba9 6a022cbb61d5ba0f03f98ff2d36319dfea1034ae 0 (*) {'user': 'test'} (glob)
+  b2e32ffb533cbe1d5759638c0cd4e8abc43b2738 0 {07f4944404050f47db2e5c5071e0e84e7a27bba9} (*) {'user': 'test'} (glob)
   $ hg phase 2
   2: draft
   $ glog
@@ -80,4 +77,84 @@
   |
   o  2@foo(draft) adda
   
+Specify precise commit date with -d
+  $ hg amend -d '2001-02-03 04:05:06 +0700'
+  $ hg parents --template '{rev}  {date|date}\n'
+  5  Sat Feb 03 04:05:06 2001 +0700
 
+Specify "now" as commit date with -D
+  $ before=`date +%s`
+  $ hg amend -D
+  $ commit=`hg parents --template '{date|hgdate} rev{rev}\n'`
+  $ after=`date +%s`
+  $ (echo $before ; echo $commit; echo $after) | sort -k1 -n -s
+  \d+ (re)
+  \d+ 0 rev6 (re)
+  \d+ (re)
+
+Specify current user as committer with -U
+  $ 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	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-corrupt.t	Tue Jun 23 16:47:24 2015 -0700
@@ -13,7 +13,6 @@
   > git = 1
   > unified = 0
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
@@ -111,6 +110,8 @@
   adding manifests
   adding file changes
   added 1 changesets with 2 changes to 2 files
+  pushing 2 obsolescence markers (* bytes) (glob)
+  2 obsolescence markers added
   $ hg -R ../other verify
   checking changesets
   checking manifests
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-drop.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,266 @@
+
+  $ cat >> $HGRCPATH <<EOF
+  > [extensions]
+  > hgext.graphlog=
+  > EOF
+  $ echo "drophack=$(echo $(dirname $TESTDIR))/hgext/drophack.py" >> $HGRCPATH
+  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
+  $ mkcommit() {
+  >    echo "$1" > "$1"
+  >    hg add "$1"
+  >    hg ci -m "add $1"
+  > }
+  $ summary() {
+  > echo ============ graph ==============
+  > hg log -G
+  > echo ============ hidden =============
+  > hg log --hidden -G
+  > echo ============ obsmark ============
+  > hg debugobsolete
+  > }
+
+
+  $ hg init repo
+  $ cd repo
+  $ mkcommit base
+
+drop a single changeset without any rewrite
+================================================
+
+
+  $ mkcommit simple-single
+  $ summary
+  ============ graph ==============
+  @  changeset:   1:d4e7845543ff
+  |  tag:         tip
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add simple-single
+  |
+  o  changeset:   0:b4952fcf48cf
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ hidden =============
+  @  changeset:   1:d4e7845543ff
+  |  tag:         tip
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add simple-single
+  |
+  o  changeset:   0:b4952fcf48cf
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ obsmark ============
+  $ hg drop .
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  working directory now at b4952fcf48cf
+  search obsmarker: wall * comb * user * sys * (glob)
+  0 obsmarkers found
+  search nodes: wall * comb * user * sys * (glob)
+  1 nodes found
+  saved backup bundle to $TESTTMP/repo/.hg/strip-backup/d4e7845543ff-8ad8efe0-drophack.hg (glob)
+  strip nodes: wall * comb * user * sys * (glob)
+  $ summary
+  ============ graph ==============
+  @  changeset:   0:b4952fcf48cf
+     tag:         tip
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ hidden =============
+  @  changeset:   0:b4952fcf48cf
+     tag:         tip
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ obsmark ============
+
+Try to drop a changeset with children
+================================================
+
+  $ mkcommit parent
+  $ mkcommit child
+  $ summary
+  ============ graph ==============
+  @  changeset:   2:34b6c051bf1f
+  |  tag:         tip
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add child
+  |
+  o  changeset:   1:19509a42b0d0
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add parent
+  |
+  o  changeset:   0:b4952fcf48cf
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ hidden =============
+  @  changeset:   2:34b6c051bf1f
+  |  tag:         tip
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add child
+  |
+  o  changeset:   1:19509a42b0d0
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add parent
+  |
+  o  changeset:   0:b4952fcf48cf
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ obsmark ============
+  $ hg drop 1
+  cannot drop revision with children (no-eol)
+  [1]
+  $ summary
+  ============ graph ==============
+  @  changeset:   2:34b6c051bf1f
+  |  tag:         tip
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add child
+  |
+  o  changeset:   1:19509a42b0d0
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add parent
+  |
+  o  changeset:   0:b4952fcf48cf
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ hidden =============
+  @  changeset:   2:34b6c051bf1f
+  |  tag:         tip
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add child
+  |
+  o  changeset:   1:19509a42b0d0
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add parent
+  |
+  o  changeset:   0:b4952fcf48cf
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ obsmark ============
+
+Try to drop a public changeset
+================================================
+
+  $ hg phase --public 2
+  $ hg drop 2
+  cannot drop public revision (no-eol)
+  [1]
+
+
+Try to drop a changeset with rewrite
+================================================
+
+  $ hg phase --force --draft 2
+  $ echo babar >> child
+  $ hg commit --amend
+  $ summary
+  ============ graph ==============
+  @  changeset:   4:a2c06c884bfe
+  |  tag:         tip
+  |  parent:      1:19509a42b0d0
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add child
+  |
+  o  changeset:   1:19509a42b0d0
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add parent
+  |
+  o  changeset:   0:b4952fcf48cf
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ hidden =============
+  @  changeset:   4:a2c06c884bfe
+  |  tag:         tip
+  |  parent:      1:19509a42b0d0
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add child
+  |
+  | x  changeset:   3:87ea30a976fd
+  | |  user:        test
+  | |  date:        Thu Jan 01 00:00:00 1970 +0000
+  | |  summary:     temporary amend commit for 34b6c051bf1f
+  | |
+  | x  changeset:   2:34b6c051bf1f
+  |/   user:        test
+  |    date:        Thu Jan 01 00:00:00 1970 +0000
+  |    summary:     add child
+  |
+  o  changeset:   1:19509a42b0d0
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add parent
+  |
+  o  changeset:   0:b4952fcf48cf
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ obsmark ============
+  34b6c051bf1f78db6aef400776de5cb964470207 a2c06c884bfe53d3840026248bd8a7eafa152df8 0 (*) {'user': 'test'} (glob)
+  87ea30a976fdf235bf096f04899cb02a903873e2 0 {34b6c051bf1f78db6aef400776de5cb964470207} (*) {'user': 'test'} (glob)
+  $ hg drop .
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  working directory now at 19509a42b0d0
+  search obsmarker: wall * comb * user * sys * (glob)
+  1 obsmarkers found
+  search nodes: wall * comb * user * sys * (glob)
+  2 nodes found
+  strip obsmarker: wall * comb * user * sys * (glob)
+  saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-drophack.hg (glob)
+  strip nodes: wall * comb * user * sys * (glob)
+  $ summary
+  ============ graph ==============
+  @  changeset:   1:19509a42b0d0
+  |  tag:         tip
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add parent
+  |
+  o  changeset:   0:b4952fcf48cf
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ hidden =============
+  @  changeset:   1:19509a42b0d0
+  |  tag:         tip
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add parent
+  |
+  o  changeset:   0:b4952fcf48cf
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add base
+  
+  ============ obsmark ============
+  87ea30a976fdf235bf096f04899cb02a903873e2 0 {34b6c051bf1f78db6aef400776de5cb964470207} (*) {'user': 'test'} (glob)
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-evolve-bumped.t	Tue Jun 23 16:47:24 2015 -0700
@@ -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	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-evolve.t	Tue Jun 23 16:47:24 2015 -0700
@@ -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 ..
 
 ##########################
@@ -193,13 +203,13 @@
 It is therefore advisable to always set the bookmark before committing::
 
   $ hg book feature-B
-  $ hg commit --message "another feature"
+  $ hg commit --message "another feature (child of $(hg log -r . -T '{node|short}'))"
 
 So here we are::
 
   $ hg book
      feature-A                 1:568a468b60fc
-   * feature-B                 2:7b36850622b2
+   * feature-B                 2:73296a82292a
 
 
 Fix The Second Patch
@@ -222,7 +232,7 @@
 changeset plus the updating changeset are hidden from view by default::
 
   $ hg log
-  4	feature-B: another feature - test
+  4	feature-B: another feature (child of 568a468b60fc) - test
   1	feature-A: a nifty feature - test
   0	: base - test
 
@@ -242,7 +252,7 @@
   1 new unstable changesets
   $ hg log
   6	feature-A: a nifty feature - test
-  4	feature-B: another feature - test
+  4	feature-B: another feature (child of 568a468b60fc) - test
   1	: a nifty feature - test
   0	: base - test
   $ hg up -q 0
@@ -251,27 +261,28 @@
   |
   | x  5:c296b79833d1@default(draft) temporary amend commit for 568a468b60fc
   | |
-  | | o  4:207cbc4ea7fe@default(draft) another feature
+  | | o  4:6992c59c6b06@default(draft) another feature (child of 568a468b60fc)
   | |/
-  | | x  3:5bb880fc0f12@default(draft) temporary amend commit for 7b36850622b2
+  | | x  3:c97947cdc7a2@default(draft) temporary amend commit for 73296a82292a
   | | |
-  | | x  2:7b36850622b2@default(draft) another feature
+  | | x  2:73296a82292a@default(draft) another feature (child of 568a468b60fc)
   | |/
   | x  1:568a468b60fc@default(draft) a nifty feature
   |/
   @  0:e55e0562ee93@default(public) base
   
   $ hg debugobsolete
-  7b36850622b2fd159fa30a4fb2a1edd2043b4a14 207cbc4ea7fee30d18b3a25f534fe5db22c6071b 0 {'date': '* *', 'user': 'test'} (glob)
-  5bb880fc0f12dd61eee6de36f62b93fdbc3684b0 0 {'date': '* *', 'user': 'test'} (glob)
-  568a468b60fc99a42d5d4ddbe181caff1eef308d ba0ec09b1babf3489b567853807f452edd46704f 0 {'date': '* *', 'user': 'test'} (glob)
-  c296b79833d1d497f33144786174bf35e04e44a3 0 {'date': '* *', 'user': 'test'} (glob)
+  73296a82292a76fb8a7061969d2489ec0d84cd5e 6992c59c6b06a1b4a92e24ff884829ae026d018b 0 (*) {'user': 'test'} (glob)
+  c97947cdc7a2a11cf78419f5c2c3dd3944ec79e8 0 {73296a82292a76fb8a7061969d2489ec0d84cd5e} (*) {'user': 'test'} (glob)
+  568a468b60fc99a42d5d4ddbe181caff1eef308d ba0ec09b1babf3489b567853807f452edd46704f 0 (*) {'user': 'test'} (glob)
+  c296b79833d1d497f33144786174bf35e04e44a3 0 {568a468b60fc99a42d5d4ddbe181caff1eef308d} (*) {'user': 'test'} (glob)
   $ hg evolve
-  move:[4] another feature
+  move:[4] another feature (child of 568a468b60fc)
   atop:[6] a nifty feature
   merging main-file-1
+  working directory is now at 5c9c8d9c2e4e
   $ hg log
-  7	feature-B: another feature - test
+  7	feature-B: another feature (child of ba0ec09b1bab) - test
   6	feature-A: a nifty feature - test
   0	: base - test
 
@@ -300,7 +311,7 @@
   $ hg glog
   @  8	feature-B: another feature that rox - test
   |
-  | o  7	: another feature - test
+  | o  7	: another feature (child of ba0ec09b1bab) - test
   |/
   o  6	feature-A: a nifty feature - test
   |
@@ -308,13 +319,14 @@
   
   $ hg evolve --any --traceback
   recreate:[8] another feature that rox
-  atop:[7] another feature
+  atop:[7] another feature (child of ba0ec09b1bab)
   computing new diff
-  committed as ca3b75e3e59b
+  committed as 476d0454d60e
+  working directory is now at 476d0454d60e
   $ hg glog
-  @  9	feature-B: bumped update to abe98aeaaa35: - test
+  @  9	feature-B: bumped update to 5c9c8d9c2e4e: - test
   |
-  o  7	: another feature - test
+  o  7	: another feature (child of ba0ec09b1bab) - test
   |
   o  6	feature-A: a nifty feature - test
   |
@@ -341,6 +353,27 @@
   $ hg commit --amend -m 'dansk!'
   2 new unstable changesets
 
+(ninja test for the {trouble} template:
+
+  $ hg log -G --template '{rev} {troubles}\n'
+  @  13
+  |
+  | o  11 unstable
+  | |
+  | o  10 unstable
+  | |
+  | x  9
+  |/
+  o  7
+  |
+  o  6
+  |
+  o  0
+  
+
+
+(/ninja)
+
   $ hg evolve --all --traceback
   move:[10] dansk 2!
   atop:[13] dansk!
@@ -348,6 +381,7 @@
   move:[11] dansk 3!
   atop:[14] dansk 2!
   merging main-file-1
+  working directory is now at cfb5ebed336d
   $ hg glog
   @  15	: dansk 3! - test
   |
@@ -355,7 +389,7 @@
   |
   o  13	feature-B: dansk! - test
   |
-  o  7	: another feature - test
+  o  7	: another feature (child of ba0ec09b1bab) - test
   |
   o  6	feature-A: a nifty feature - test
   |
@@ -385,6 +419,7 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
+  pull obsolescence markers
   $ cd alpha
 
   $ cat << EOF > A
@@ -422,7 +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
+  saved backup bundle to $TESTTMP/alpha/.hg/strip-backup/e87767087a57-d7bd82e9-backup.hg (glob)
   $ hg verify
   checking changesets
   checking manifests
@@ -441,6 +476,8 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
+  pull obsolescence markers
+  2 obsolescence markers added
   (run 'hg update' to get a working copy)
   $ hg up
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
@@ -470,9 +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
   |
@@ -489,8 +526,8 @@
   o  0:8685c6d34325@default(draft) add 0
   
   $ hg debugobsolete
-  0e84df4912da4c7cad22a3b4fcfd58ddfb7c8ae9 0b9e50c35132ff548ec0065caea6a87e1ebcef32 0 {'date': '* *', 'user': 'test'} (glob)
-  db038628b9e56f51a454c0da0c508df247b41748 acb28cd497b7f8767e01ef70f68697a959573c2d 0 {'date': '* *', 'user': 'test'} (glob)
+  0e84df4912da4c7cad22a3b4fcfd58ddfb7c8ae9 0b9e50c35132ff548ec0065caea6a87e1ebcef32 0 (*) {'user': 'test'} (glob)
+  db038628b9e56f51a454c0da0c508df247b41748 acb28cd497b7f8767e01ef70f68697a959573c2d 0 (*) {'user': 'test'} (glob)
 
 Test graft --continue
 
@@ -500,7 +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')
@@ -511,8 +548,9 @@
   7:a5bfd90a2f29 stable
   $ echo 3 > 1
   $ 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
   |
@@ -533,9 +571,9 @@
   o  0:8685c6d34325@default(draft) add 0
   
   $ hg debugobsolete
-  0e84df4912da4c7cad22a3b4fcfd58ddfb7c8ae9 0b9e50c35132ff548ec0065caea6a87e1ebcef32 0 {'date': '* *', 'user': 'test'} (glob)
-  db038628b9e56f51a454c0da0c508df247b41748 acb28cd497b7f8767e01ef70f68697a959573c2d 0 {'date': '* *', 'user': 'test'} (glob)
-  a5bfd90a2f29c7ccb8f917ff4e5013a9053d0a04 920e58bb443b73eea9d6d65570b4241051ea3229 0 {'date': '* *', 'user': 'test'} (glob)
+  0e84df4912da4c7cad22a3b4fcfd58ddfb7c8ae9 0b9e50c35132ff548ec0065caea6a87e1ebcef32 0 (*) {'user': 'test'} (glob)
+  db038628b9e56f51a454c0da0c508df247b41748 acb28cd497b7f8767e01ef70f68697a959573c2d 0 (*) {'user': 'test'} (glob)
+  a5bfd90a2f29c7ccb8f917ff4e5013a9053d0a04 920e58bb443b73eea9d6d65570b4241051ea3229 0 (*) {'user': 'test'} (glob)
 
 Test touch
 
@@ -585,26 +623,36 @@
 
   $ rm *.orig
   $ hg fold
-  no revision to fold
+  abort: no revisions specified
+  [255]
+  $ hg fold .
+  single revision specified, nothing to fold
   [1]
-  $ hg fold 6 --rev 10
-  abort: cannot specify both --rev and a target revision
+  $ hg fold 0::10 --rev 1 --exact
+  abort: cannot fold non-linear revisions (multiple heads given)
+  [255]
+  $ hg fold -r 4 -r 6 --exact
+  abort: cannot fold non-linear revisions (multiple roots given)
   [255]
-  $ hg fold 6 # want to run hg fold 6
-  2 changesets folded
+  $ hg fold 10 1
+  abort: cannot fold non-linear revisions
+  (given revisions are unrelated to parent of working directory)
+  [255]
+  $ hg phase --public 0
+  $ hg fold -r 0
+  abort: cannot fold public revisions
+  [255]
+  $ hg fold -r 5
+  3 changesets folded
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  $ glog
-  @  11:dd4682c1a481@default(draft) add 1
-  |
-  o  5:0b9e50c35132@default(draft) add 3
-  |
-  o  4:ce341209337f@default(draft) add 4
-  |
-  | o  1:73d38bb17fd7@default(draft) add 1
-  |/
-  o  0:8685c6d34325@default(draft) add 0
+  $ hg fold 6 # want to run hg fold 6
+  abort: hidden revision '6'!
+  (use --hidden to access hidden revisions)
+  [255]
+  $ hg log -r 11 --template '{desc}\n'
+  add 3
   
-  $ hg log -r 11 --template '{desc}\n'
+  
   add 1
   
   
@@ -616,15 +664,15 @@
 
   $ hg up 4
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
-  $ hg fold --rev 4::11 --user victor
-  3 changesets folded
+  $ hg fold --rev 4::11 --user victor --exact
+  2 changesets folded
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ glog
   @  12:d26d339c513f@default(draft) add 4
   |
   | o  1:73d38bb17fd7@default(draft) add 1
   |/
-  o  0:8685c6d34325@default(draft) add 0
+  o  0:8685c6d34325@default(public) add 0
   
   $ hg log --template '{rev}: {author}\n'
   12: victor
@@ -648,8 +696,32 @@
 
   $ hg olog
   4	: add 4 - test
-  5	: add 3 - test
-  11	: add 1 - test
+  11	: add 3 - test
+
+Test obsstore stat
+
+  $ hg debugobsstorestat
+  markers total:                     10
+      for known precursors:          10
+      with parents data:              0
+  markers with no successors:         0
+                1 successors:        10
+                2 successors:         0
+      more than 2 successors:         0
+      available  keys:
+                 user:               10
+  disconnected clusters:              1
+          any known node:             1
+          smallest length:           10
+          longer length:             10
+          median length:             10
+          mean length:               10
+      using parents data:             1
+          any known node:             1
+          smallest length:           10
+          longer length:             10
+          median length:             10
+          mean length:               10
 
 
 Test evolving renames
@@ -671,6 +743,7 @@
   $ hg stab --any
   move:[15] c
   atop:[13] a
+  working directory is now at 3742bde73477
   $ hg st -C --change=tip
   A c
     a
@@ -683,11 +756,11 @@
   2 changesets folded
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ glog
-  @  16:e6d8dace77a1@default(draft) Folding with custom commit message
+  @  16:d6239ff09c9f@default(draft) Folding with custom commit message
   |
-  o  13:e9c952d5bc4b@default(draft) dansk!
+  o  13:56ade053f46d@default(draft) dansk!
   |
-  o  7:abe98aeaaa35@default(public) another feature
+  o  7:5c9c8d9c2e4e@default(public) another feature (child of ba0ec09b1bab)
   |
   o  6:ba0ec09b1bab@default(public) a nifty feature
   |
@@ -702,8 +775,115 @@
   2 changesets folded
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg qlog
-  17 - 2451d817c756 A longer
+  17 - dba606655966 A longer
                     commit message (draft)
-  7 - abe98aeaaa35 another feature (public)
+  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
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-A1.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,285 @@
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+==== A.1.1 pushing a single head ====
+..
+.. {{{
+..     ⇠◔ A
+..      |
+..      ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * A
+..
+.. Command run:
+..
+..  * hg push -r A
+..  * hg push
+..
+.. Expected exchange:
+..
+..  * chain from A
+
+Setup
+---------------
+
+initial
+
+  $ setuprepos A.1.1
+  creating test repo for test case A.1.1
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(A)'`
+  $ hg log -G
+  @  f5bc6836db60 (draft): A
+  |
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+setup both variants
+
+  $ cp -r A.1.1 A.1.1.a
+  $ cp -r A.1.1 A.1.1.b
+
+
+Variant a: push -r A
+--------------------
+
+  $ dotest A.1.1.a A
+  ## Running testcase A.1.1.a
+  # testing echange of "A" (f5bc6836db60)
+  ## initial state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "A" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "f5bc6836db60" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  1 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+
+
+
+Variant b: push
+---------------
+
+  $ dotest A.1.1.b
+  ## Running testcase A.1.1.b
+  ## initial state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  1 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+
+
+
+
+
+==== A.1.2 pushing a multiple changeset into a single head  ====
+
+.. {{{
+..      ◔ B
+..      |
+..     ⇠◔ A
+..      |
+..      ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * A
+..
+.. Command run:
+..
+..  * hg push -r B
+..  * hg push
+..
+.. Expected exchange:
+..
+..  * chain from A
+
+Setup
+---------------
+
+initial
+
+  $ setuprepos A.1.2
+  creating test repo for test case A.1.2
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ mkcommit B
+  $ hg log -G
+  @  f6fbb35d8ac9 (draft): B
+  |
+  o  f5bc6836db60 (draft): A
+  |
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(A)'`
+  $ hg debugobsolete
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+setup both variants
+
+  $ cp -r A.1.2 A.1.2.a
+  $ cp -r A.1.2 A.1.2.b
+
+
+Variant a: push -r A
+--------------------
+
+  $ dotest A.1.2.a B
+  ## Running testcase A.1.2.a
+  # testing echange of "B" (f6fbb35d8ac9)
+  ## initial state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "B" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "f6fbb35d8ac9" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 2 changesets with 2 changes to 2 files
+  1 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+Variant b: push
+---------------
+
+  $ dotest A.1.2.b
+  ## Running testcase A.1.2.b
+  ## initial state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 2 changesets with 2 changes to 2 files
+  1 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-A2.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,110 @@
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== A.2 Two heads ===
+
+.. {{{
+..     ⇠○ B
+..   ⇠◔ | A
+..    |/
+..    ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * A
+..  * B
+..
+..
+.. Command run:
+..
+..  * hg push -r A
+..
+.. Expected exchange:
+..
+..  * chain from A
+..
+.. Expected Exclude:
+..
+..  * chain from B
+
+initial
+
+  $ setuprepos A.2
+  creating test repo for test case A.2
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(A)'`
+  $ hg up .^
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  $ mkcommit B
+  created new head
+  $ hg debugobsolete bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb `getid 'desc(B)'`
+  $ hg log -G
+  @  35b183996678 (draft): B
+  |
+  | o  f5bc6836db60 (draft): A
+  |/
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 35b1839966785d5703a01607229eea932db42f87 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+
+Actual Test
+---------------
+
+  $ dotest A.2 A
+  ## Running testcase A.2
+  # testing echange of "A" (f5bc6836db60)
+  ## initial state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 35b1839966785d5703a01607229eea932db42f87 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "A" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 35b1839966785d5703a01607229eea932db42f87 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "f5bc6836db60" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  1 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 35b1839966785d5703a01607229eea932db42f87 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+
+  $ cd ..
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-A3.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,218 @@
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== A.3 new branch created ===
+
+.. {{{
+..   B' ○⇢ø B
+..      | |
+..      \Aø⇠◔ A'
+..       \|/
+..        ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * `Aø⇠○ A'`
+..  * `Bø⇠○ B'`
+..
+.. Command run:
+..
+..  * hg push -r A
+..
+.. Expected exchange:
+..
+..  * chain from A
+..
+.. Expected Exclude:
+..
+..  * chain from B
+..
+.. Extra note:
+..
+.. If A and B are remontly known, we should expect:
+..
+..  * `hg push` will complain about the new head
+..  * `hg push` should complain about unstable history creation
+
+initial
+
+  $ setuprepos A.3.a
+  creating test repo for test case A.3.a
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ mkcommit B0
+  $ hg update -q 0
+  $ mkcommit A1
+  created new head
+  $ hg update -q 0
+  $ mkcommit B1
+  created new head
+  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg debugobsolete `getid 'desc(B0)'` `getid 'desc(B1)'`
+  $ hg log -G --hidden
+  @  f6298a8ac3a4 (draft): B1
+  |
+  | o  e5ea8f9c7314 (draft): A1
+  |/
+  | x  6e72f0a95b5e (draft): B0
+  | |
+  | x  28b51eb45704 (draft): A0
+  |/
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test for first version (changeset unknown in remote)
+-----------------------------------------------------------
+
+  $ dotest A.3.a A1
+  ## Running testcase A.3.a
+  # testing echange of "A1" (e5ea8f9c7314)
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "A1" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "e5ea8f9c7314" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  1 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+
+other variant: changeset known in remote
+----------------------------------------
+
+  $ setuprepos A.3.b
+  creating test repo for test case A.3.b
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ mkcommit B0
+  $ hg push -q ../pushdest
+  $ hg push -q ../pulldest
+  $ hg update -q 0
+  $ mkcommit A1
+  created new head
+  $ hg update -q 0
+  $ mkcommit B1
+  created new head
+  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg debugobsolete `getid 'desc(B0)'` `getid 'desc(B1)'`
+  $ hg log -G --hidden
+  @  f6298a8ac3a4 (draft): B1
+  |
+  | o  e5ea8f9c7314 (draft): A1
+  |/
+  | x  6e72f0a95b5e (draft): B0
+  | |
+  | x  28b51eb45704 (draft): A0
+  |/
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test for first version (changeset unknown in remote)
+-----------------------------------------------------------
+
+check it complains about multiple heads
+
+  $ cd A.3.b
+  $ hg push -R main -r e5ea8f9c7314 pushdest
+  pushing to pushdest
+  searching for changes
+  abort: push creates new remote head e5ea8f9c7314!
+  (merge or see "hg help push" for details about pushing new heads)
+  [255]
+  $ cd ..
+
+test obsmarkers exchange.
+
+  $ dotest A.3.b A1 -f
+  ## Running testcase A.3.b
+  # testing echange of "A1" (e5ea8f9c7314)
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "A1" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files (+1 heads)
+  remote: 1 new obsolescence markers
+  ## post push state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "e5ea8f9c7314" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 2 files (+1 heads)
+  1 new obsolescence markers
+  (run 'hg heads' to see heads, 'hg merge' to merge)
+  1 new unstable changesets
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-A4.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,112 @@
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+
+=== A.4 Push in the middle of the obsolescence chain ===
+
+.. (Where we show that we should not push the marker without the successors)
+..
+.. {{{
+..   B ◔
+..     |
+..   A⇠ø⇠○ A'
+..     |/
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * `Aø⇠○ A'`
+..  * chain from A
+..
+.. Command run:
+..
+..  * hg push -r B
+..
+.. Expected exchange:
+..
+..  * Chain from A
+..
+.. Expected Exclude:
+..
+..  * `Aø⇠○ A'`
+
+
+initial
+
+  $ setuprepos A.4
+  creating test repo for test case A.4
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ mkcommit B
+  $ hg update 0
+  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
+  $ mkcommit A1
+  created new head
+  $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(A0)'`
+  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg log -G --hidden
+  @  e5ea8f9c7314 (draft): A1
+  |
+  | o  06055a7959d4 (draft): B
+  | |
+  | x  28b51eb45704 (draft): A0
+  |/
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test for first version (changeset unknown in remote)
+-----------------------------------------------------------
+
+  $ dotest A.4 B -f
+  ## Running testcase A.4
+  # testing echange of "B" (06055a7959d4)
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "B" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "06055a7959d4" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 2 changesets with 2 changes to 2 files
+  1 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-A5.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,121 @@
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+
+=== A.5 partial reordering ===
+..
+.. {{{
+..   B ø⇠⇠
+..     | ⇡
+..   A ø⇠⇠⇠○ A'
+..     | ⇡/
+..     | ○ B'
+..     |/
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * `Aø⇠○ A'`
+..  * `Bø⇠○ B'`
+..
+.. Command run:
+..
+..  * hg push -r B
+..
+.. Expected exchange:
+..
+..  * `Bø⇠○ B'`
+..
+.. Expected Exclude:
+..
+..  * `Aø⇠○ A'`
+
+
+initial
+
+  $ setuprepos A.5
+  creating test repo for test case A.5
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ mkcommit B0
+  $ hg update 0
+  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
+  $ mkcommit B1
+  created new head
+  $ mkcommit A1
+  $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(A0)'`
+  $ hg debugobsolete `getid 'desc(B0)'` `getid 'desc(B1)'`
+  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg log -G --hidden
+  @  8c0a98c83722 (draft): A1
+  |
+  o  f6298a8ac3a4 (draft): B1
+  |
+  | x  6e72f0a95b5e (draft): B0
+  | |
+  | x  28b51eb45704 (draft): A0
+  |/
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test
+-----------
+
+  $ dotest A.5 B1
+  ## Running testcase A.5
+  # testing echange of "B1" (f6298a8ac3a4)
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "B1" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "f6298a8ac3a4" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  1 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-A6.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,134 @@
+
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+
+=== A.6 between existing changeset ===
+
+.. {{{
+..   A ◕⇠● B
+..     |/
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * `A◕⇠● B`
+..
+.. Command run:
+..
+..  * hg push -r B
+..  * hg push
+..
+.. Expected exchange:
+..
+..  * `A◕⇠● B`
+
+
+initial
+
+  $ setuprepos A.6
+  creating test repo for test case A.6
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ hg update -q 0
+  $ mkcommit A1
+  created new head
+
+make both changeset known in remote
+
+  $ hg push -qf ../pushdest
+  $ hg push -qf ../pulldest
+
+create a marker after this
+
+  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg log -G --hidden
+  @  e5ea8f9c7314 (draft): A1
+  |
+  | x  28b51eb45704 (draft): A0
+  |/
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+  $ cp -r A.6 A.6.a
+  $ cp -r A.6 A.6.b
+
+Actual Test (explicit push version)
+-----------------------------------
+
+  $ dotest A.6.a A1
+  ## Running testcase A.6.a
+  # testing echange of "A1" (e5ea8f9c7314)
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "A1" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 1 new obsolescence markers
+  ## post push state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "e5ea8f9c7314" from main into pulldest
+  pulling from main
+  no changes found
+  1 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+Actual Test (bare push version)
+-------------------------------
+
+  $ dotest A.6.b
+  ## Running testcase A.6.b
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 1 new obsolescence markers
+  ## post push state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling from main into pulldest
+  pulling from main
+  searching for changes
+  no changes found
+  1 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-A7.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,75 @@
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== A.7 Non targeted common changeset ===
+
+.. {{{
+..    ⇠◕ A
+..     |
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * Chain from A
+..
+.. Command run:
+..
+..  * hg push -r O
+..
+.. Expected exchange:
+..
+..  * ø
+
+
+  $ setuprepos A.7
+  creating test repo for test case A.7
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ hg push -q ../pushdest
+  $ hg push -q ../pulldest
+  $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(A)'`
+  $ hg log -G --hidden
+  @  f5bc6836db60 (draft): A
+  |
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test
+-----------------------------------
+
+  $ dotest A.7 O
+  ## Running testcase A.7
+  # testing echange of "O" (a9bdc8b26820)
+  ## initial state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "O" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  ## post push state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pulling "a9bdc8b26820" from main into pulldest
+  pulling from main
+  no changes found
+  ## post pull state
+  # obstore: main
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-B1.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,137 @@
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== B.1 Prune on non-targeted common changeset ===
+
+.. {{{
+..     ⊗ B
+..     |
+..     ◕ A
+..     |
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * B (prune)
+..
+.. Command run:
+..
+..  * hg push -r O
+..  * hg push
+..
+.. Expected exchange:
+..
+..  * B (prune)
+
+
+  $ setuprepos B.1
+  creating test repo for test case B.1
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ mkcommit B
+  $ hg prune -qd '0 0' .
+  $ hg log -G --hidden
+  x  f6fbb35d8ac9 (draft): B
+  |
+  @  f5bc6836db60 (draft): A
+  |
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+
+  $ cp -r B.1 B.1.a
+  $ cp -r B.1 B.1.b
+
+Actual Test (explicit push version)
+-----------------------------------
+
+  $ dotest B.1.a A
+  ## Running testcase B.1.a
+  # testing echange of "A" (f5bc6836db60)
+  ## initial state
+  # obstore: main
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "A" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  # obstore: pushdest
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "f5bc6836db60" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  1 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+Actual Test (bare push version)
+-----------------------------------
+
+  $ dotest B.1.b
+  ## Running testcase B.1.b
+  ## initial state
+  # obstore: main
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  # obstore: pushdest
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  1 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-B2.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,117 @@
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== B.2 Pruned changeset on head: nothing pushed ===
+
+.. {{{
+..     ⊗ A
+..     |
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * A (prune)
+..
+.. Command run:
+..
+..  * hg push -r O
+..  * hg push
+..
+.. Expected exchange:
+..
+..  * prune marker for A
+
+
+  $ setuprepos B.2
+  creating test repo for test case B.2
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ hg prune -qd '0 0' .
+  $ hg log -G --hidden
+  x  f5bc6836db60 (draft): A
+  |
+  @  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+
+  $ cp -r B.2 B.2.a
+  $ cp -r B.2 B.2.b
+
+Actual Test (explicit push version)
+-----------------------------------
+
+  $ dotest B.2.a O
+  ## Running testcase B.2.a
+  # testing echange of "O" (a9bdc8b26820)
+  ## initial state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "O" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 1 new obsolescence markers
+  ## post push state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "a9bdc8b26820" from main into pulldest
+  pulling from main
+  no changes found
+  1 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+Actual Test (bare push version)
+-----------------------------------
+
+  $ dotest B.2.b
+  ## Running testcase B.2.b
+  ## initial state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 1 new obsolescence markers
+  ## post push state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling from main into pulldest
+  pulling from main
+  searching for changes
+  no changes found
+  1 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-B3.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,100 @@
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== B.3 Pruned changeset on non-pushed part of the history ===
+
+.. {{{
+..   ⊗ C
+..   |
+..   ○ B
+..   | ◔ A
+..   |/
+..   ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * C (prune)
+..
+.. Command run:
+..
+..  * hg push -r A
+..  * hg push
+..
+.. Expected exchange:
+..
+..  * ø
+..
+.. Expected Exclude:
+..
+..  * chain from B
+
+
+  $ setuprepos B.3
+  creating test repo for test case B.3
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ hg up --quiet 0
+  $ mkcommit B
+  created new head
+  $ mkcommit C
+  $ hg prune -qd '0 0' .
+  $ hg log -G --hidden
+  x  e56289ab6378 (draft): C
+  |
+  @  35b183996678 (draft): B
+  |
+  | o  f5bc6836db60 (draft): A
+  |/
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  e56289ab6378dc752fd7965f8bf66b58bda740bd 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+
+Actual Test
+-----------------------------------
+
+  $ dotest B.3 A
+  ## Running testcase B.3
+  # testing echange of "A" (f5bc6836db60)
+  ## initial state
+  # obstore: main
+  e56289ab6378dc752fd7965f8bf66b58bda740bd 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "A" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pulling "f5bc6836db60" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  e56289ab6378dc752fd7965f8bf66b58bda740bd 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-B4.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,143 @@
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== B.4 Pruned changeset on common part of history ===
+
+.. {{{
+..   ⊗ C
+..   | ● B
+..   | |
+..   | ● A
+..   |/
+..   ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * C (prune)
+..
+.. Command run:
+..
+..  * hg push -r B
+..  * hg push
+..
+.. Expected exchange:
+..
+..  * prune for C
+
+
+  $ setuprepos B.4
+  creating test repo for test case B.4
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ mkcommit B
+  $ hg phase --public .
+  $ hg push ../pushdest
+  pushing to ../pushdest
+  searching for changes
+  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
+  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
+  $ hg prune -qd '0 0' .
+  $ hg log -G --hidden
+  x  7f7f229b13a6 (draft): C
+  |
+  | o  f6fbb35d8ac9 (public): B
+  | |
+  | o  f5bc6836db60 (public): A
+  |/
+  @  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+
+  $ cp -r B.4 B.4.a
+  $ cp -r B.4 B.4.b
+
+Actual Test (explicit push version)
+-----------------------------------
+
+  $ dotest B.4.a O
+  ## Running testcase B.4.a
+  # testing echange of "O" (a9bdc8b26820)
+  ## initial state
+  # obstore: main
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "O" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 1 new obsolescence markers
+  ## post push state
+  # obstore: main
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "a9bdc8b26820" from main into pulldest
+  pulling from main
+  no changes found
+  1 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+Actual Test (bare push version)
+-----------------------------------
+
+  $ dotest B.4.b
+  ## Running testcase B.4.b
+  ## initial state
+  # obstore: main
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 1 new obsolescence markers
+  ## post push state
+  # obstore: main
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling from main into pulldest
+  pulling from main
+  searching for changes
+  no changes found
+  1 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-B5.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,171 @@
+
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+
+=== B.5 Push of a children of changeset which successors is pruned ===
+
+.. This case Mirror A.4, with pruned changeset successors.
+..
+.. {{{
+..   B ◔
+..     |
+..   A⇠ø⇠⊗ A'
+..     |/
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * `Aø⇠○ A'`
+..  * chain from A
+..  * `A'`
+..
+.. Command run:
+..
+..  * hg push -r B
+..
+.. Expected exchange:
+..
+..  * `Aø⇠○ A'`
+..  * chain from A
+..  * `A'`
+..
+.. Extra Note:
+..
+..   I'm not totally happy about this case and I believe some more complicated
+..   graph can result in behavior wuite confusing for the user (if some tool create
+..   prune maker in a the middle of a valid chain)
+
+  $ setuprepos B.5
+  creating test repo for test case B.5
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ mkcommit B
+  $ hg up --quiet 0
+  $ mkcommit A1
+  created new head
+  $ hg debugobsolete --hidden `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg prune -qd '0 0' .
+  $ hg log -G --hidden
+  x  e5ea8f9c7314 (draft): A1
+  |
+  | o  06055a7959d4 (draft): B
+  | |
+  | x  28b51eb45704 (draft): A0
+  |/
+  @  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+  $ cp -r B.5 B.5.a
+  $ cp -r B.5 B.5.b
+
+Actual Test (explicit push version)
+-----------------------------------
+
+  $ dotest B.5.a B -f
+  ## Running testcase B.5.a
+  # testing echange of "B" (06055a7959d4)
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "B" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "06055a7959d4" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 2 changesets with 2 changes to 2 files
+  2 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  1 new unstable changesets
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+Actual Test (bare push version)
+-------------------------------------
+
+  $ dotest B.5.b B -f
+  ## Running testcase B.5.b
+  # testing echange of "B" (06055a7959d4)
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "B" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "06055a7959d4" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 2 changesets with 2 changes to 2 files
+  2 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  1 new unstable changesets
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-B6.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,101 @@
+
+
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+== B.6 Pruned changeset with ancestors not in pushed set ===
+
+.. {{{
+..   B ø⇠⊗ B'
+..     | |
+..   A ○ |
+..     |/
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * `Bø⇠⊗ B'`
+..  * B' prune
+..
+.. Command run:
+..
+..  * hg push -r O
+..
+.. Expected exchange:
+..
+..  * `Bø⇠⊗ B'`
+..  * B' prune
+
+  $ setuprepos B.6
+  creating test repo for test case B.6
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ mkcommit B0
+  $ hg up --quiet 0
+  $ mkcommit B1
+  created new head
+  $ hg debugobsolete `getid 'desc(B0)'` `getid 'desc(B1)'`
+  $ hg prune -qd '0 0' .
+  $ hg log -G --hidden
+  x  f6298a8ac3a4 (draft): B1
+  |
+  | x  962ecf6b1afc (draft): B0
+  | |
+  | o  f5bc6836db60 (draft): A
+  |/
+  @  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  962ecf6b1afc94e15c7e48fdfb76ef8abd11372b f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test
+-------------------------------------
+
+  $ dotest B.6 O
+  ## Running testcase B.6
+  # testing echange of "O" (a9bdc8b26820)
+  ## initial state
+  # obstore: main
+  962ecf6b1afc94e15c7e48fdfb76ef8abd11372b f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "O" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 2 new obsolescence markers
+  ## post push state
+  # obstore: main
+  962ecf6b1afc94e15c7e48fdfb76ef8abd11372b f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  962ecf6b1afc94e15c7e48fdfb76ef8abd11372b f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "a9bdc8b26820" from main into pulldest
+  pulling from main
+  no changes found
+  2 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  962ecf6b1afc94e15c7e48fdfb76ef8abd11372b f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  962ecf6b1afc94e15c7e48fdfb76ef8abd11372b f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  962ecf6b1afc94e15c7e48fdfb76ef8abd11372b f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-B7.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,83 @@
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+
+=== B.7 Prune on non-targeted common changeset ===
+..
+.. {{{
+..     ⊗ B
+..     |
+..     ◕ A
+..     |
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * B (prune)
+..
+.. Command run:
+..
+..  * hg push -r O
+........  * hg push
+..
+.. Expected exchange:
+..
+..  * ø
+.......  * B (prune)
+
+  $ setuprepos B.7
+  creating test repo for test case B.7
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ hg push -q ../pushdest
+  $ hg push -q ../pulldest
+  $ mkcommit B
+  $ hg prune -qd '0 0' .
+  $ hg log -G --hidden
+  x  f6fbb35d8ac9 (draft): B
+  |
+  @  f5bc6836db60 (draft): A
+  |
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test
+-------------------------------------
+
+  $ dotest B.7 O
+  ## Running testcase B.7
+  # testing echange of "O" (a9bdc8b26820)
+  ## initial state
+  # obstore: main
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "O" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  ## post push state
+  # obstore: main
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pulling "a9bdc8b26820" from main into pulldest
+  pulling from main
+  no changes found
+  ## post pull state
+  # obstore: main
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-C1.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,135 @@
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== C.1 Multiple pruned changeset atop each other ===
+.. 
+.. {{{
+..   ⊗ B
+..   |
+..   ⊗ A
+..   |
+..   ● O
+.. }}}
+.. 
+.. Marker exist from:
+.. 
+..  * A (prune)
+..  * B (prune)
+.. 
+.. Command run:
+.. 
+..  * hg push -r O
+..  * hg push
+.. 
+.. Expected exchange:
+.. 
+..  * A (prune)
+..  * B (prune)
+
+  $ setuprepos C.1
+  creating test repo for test case C.1
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ mkcommit B
+  $ hg prune -qd '0 0' .^::.
+  $ hg log -G --hidden
+  x  f6fbb35d8ac9 (draft): B
+  |
+  x  f5bc6836db60 (draft): A
+  |
+  @  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+  $ cp -r C.1 C.1.a
+  $ cp -r C.1 C.1.b
+
+Actual Test (explicit push)
+---------------------------
+
+  $ dotest C.1.a O
+  ## Running testcase C.1.a
+  # testing echange of "O" (a9bdc8b26820)
+  ## initial state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "O" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 2 new obsolescence markers
+  ## post push state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "a9bdc8b26820" from main into pulldest
+  pulling from main
+  no changes found
+  2 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+Actual Test (bare push)
+-------------------------------------
+
+  $ dotest C.1.b
+  ## Running testcase C.1.b
+  ## initial state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 2 new obsolescence markers
+  ## post push state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling from main into pulldest
+  pulling from main
+  searching for changes
+  no changes found
+  2 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f6fbb35d8ac958bbe70035e4c789c18471cdc0af 0 {f5bc6836db60e308a17ba08bf050154ba9c4fad7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-C2.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,157 @@
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== C.2 Pruned changeset on precursors ===
+
+.. {{{
+..   B ⊗
+..     |
+..   A ø⇠◔ A'
+..     |/
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * A' succeed to A
+..  * B (prune)
+..
+.. Command run:
+..
+..  * hg push -r A'
+..  * hg push
+..
+.. Expected exchange:
+..
+..  * `A ø⇠o A'`
+..  * B (prune)
+
+  $ setuprepos C.2
+  creating test repo for test case C.2
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ mkcommit B
+  $ hg prune -qd '0 0' .
+  $ hg update -q 0
+  $ mkcommit A1
+  created new head
+  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg log -G --hidden
+  @  e5ea8f9c7314 (draft): A1
+  |
+  | x  06055a7959d4 (draft): B
+  | |
+  | x  28b51eb45704 (draft): A0
+  |/
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+  $ cp -r C.2 C.2.a
+  $ cp -r C.2 C.2.b
+
+Actual Test (explicit push)
+---------------------------
+
+  $ dotest C.2.a A1
+  ## Running testcase C.2.a
+  # testing echange of "A1" (e5ea8f9c7314)
+  ## initial state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "A1" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "e5ea8f9c7314" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  2 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+Actual Test (bare push)
+-------------------------------------
+
+  $ dotest C.2.b
+  ## Running testcase C.2.b
+  ## initial state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  2 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-C3.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,159 @@
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+
+=== C.3 Pruned changeset on precursors of another pruned one ===
+
+.. {{{
+..   B ⊗
+..     |
+..   A ø⇠⊗ A'
+..     |/
+..     ● O
+.. }}}
+.. 
+.. Marker exist from:
+.. 
+..  * A' succeed to A
+..  * A' (prune
+..  * B (prune)
+.. 
+.. Command run:
+.. 
+..  * hg push -r A'
+..  * hg push
+.. 
+.. Expected exchange:
+.. 
+..  * `A ø⇠⊗ A'`
+..  * A (prune)
+..  * B (prune)
+
+  $ setuprepos C.3
+  creating test repo for test case C.3
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ mkcommit B
+  $ hg prune -qd '0 0' .
+  $ hg update -q 0
+  $ mkcommit A1
+  created new head
+  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg prune -qd '0 0' .
+  $ hg log -G --hidden
+  x  e5ea8f9c7314 (draft): A1
+  |
+  | x  06055a7959d4 (draft): B
+  | |
+  | x  28b51eb45704 (draft): A0
+  |/
+  @  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+  $ cp -r C.3 C.3.a
+  $ cp -r C.3 C.3.b
+
+Actual Test (explicit push)
+---------------------------
+
+  $ dotest C.3.a O
+  ## Running testcase C.3.a
+  # testing echange of "O" (a9bdc8b26820)
+  ## initial state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "O" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 3 new obsolescence markers
+  ## post push state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "a9bdc8b26820" from main into pulldest
+  pulling from main
+  no changes found
+  3 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+Actual Test (bare push)
+-------------------------------------
+
+  $ dotest C.3.b
+  ## Running testcase C.3.b
+  ## initial state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 3 new obsolescence markers
+  ## post push state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling from main into pulldest
+  pulling from main
+  searching for changes
+  no changes found
+  3 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-C4.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,118 @@
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== C.4 multiple successors, one is pruned ===
+
+.. Another case were prune are confusing? (A is killed without its successors being
+.. pushed)
+..
+.. (could split of divergence, if split see the Z section)
+..
+.. {{{
+..        A
+..    B ○⇢ø⇠⊗ C
+..       \|/
+..        ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * `A ø⇠○ B`
+..  * `A ø⇠○ C`
+..  * C (prune)
+..
+..
+.. Command run:
+..
+..  * hg push -r O
+..
+.. Expected exchange:
+..
+..  * `A ø⇠○ C`
+..  * C (prune)
+..
+.. Expected exclude:
+..
+..  * `A ø⇠○ B`
+
+Implemented as the non-split version
+
+  $ setuprepos C.4
+  creating test repo for test case C.4
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A
+  $ hg update -q 0
+  $ mkcommit B
+  created new head
+  $ hg update -q 0
+  $ mkcommit C
+  created new head
+  $ hg debugobsolete --hidden `getid 'desc(A)'` `getid 'desc(B)'`
+  $ hg debugobsolete --hidden `getid 'desc(A)'` `getid 'desc(C)'`
+  $ hg prune -qd '0 0' .
+  $ hg log -G --hidden
+  x  7f7f229b13a6 (draft): C
+  |
+  | o  35b183996678 (draft): B
+  |/
+  | x  f5bc6836db60 (draft): A
+  |/
+  @  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 35b1839966785d5703a01607229eea932db42f87 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test
+-------------------------------------
+
+  $ dotest C.4 O
+  ## Running testcase C.4
+  # testing echange of "O" (a9bdc8b26820)
+  ## initial state
+  # obstore: main
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 35b1839966785d5703a01607229eea932db42f87 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "O" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 2 new obsolescence markers
+  ## post push state
+  # obstore: main
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 35b1839966785d5703a01607229eea932db42f87 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "a9bdc8b26820" from main into pulldest
+  pulling from main
+  no changes found
+  2 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 35b1839966785d5703a01607229eea932db42f87 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  f5bc6836db60e308a17ba08bf050154ba9c4fad7 7f7f229b13a629a5b20581c6cb723f4e2ca54bed 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-D1.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,105 @@
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== D.1 Pruned changeset based on missing precursor of something not present ===
+
+.. {{{
+..   B ⊗
+..     |
+..   A ◌⇠◔ A'
+..     |/
+..     ● O
+.. }}}
+..
+.. Marker exist from:
+..
+..  * A' succeed to A
+..  * B (prune)
+..
+.. Command run:
+..
+..  * hg push -r A'
+..  * hg push
+..
+.. Expected exchange:
+..
+..  * `A ø⇠o A'`
+..  * B (prune)
+
+  $ setuprepos D.1
+  creating test repo for test case D.1
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ mkcommit B
+  $ hg up -q 0
+  $ mkcommit A1
+  created new head
+  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg prune -d '0 0' 'desc(B)'
+  1 changesets pruned
+  $ hg strip --hidden -q 'desc(A0)'
+  $ hg log -G --hidden
+  @  e5ea8f9c7314 (draft): A1
+  |
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test
+-------------------------------------
+
+  $ dotest D.1 A1
+  ## Running testcase D.1
+  # testing echange of "A1" (e5ea8f9c7314)
+  ## initial state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "A1" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "e5ea8f9c7314" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  2 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  06055a7959d4128e6e3bccfd01482e83a2db8a3a 0 {28b51eb45704506b5c603decd6bf7ac5e0f6a52f} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-D2.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,94 @@
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== D.2 missing prune target (prune in "pushed set") ===
+
+{{{
+}}}
+
+Marker exist from:
+
+ * A' succeed to A
+ * A' (prune)
+
+Command run:
+
+ * hg push
+
+Expected exchange:
+
+ * `A ø⇠o A'`
+ * A' (prune)
+
+
+  $ setuprepos D.2
+  creating test repo for test case D.2
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ hg up -q 0
+  $ mkcommit A1
+  created new head
+  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg prune --date '0 0' .
+  1 changesets pruned
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  working directory now at a9bdc8b26820
+  $ hg strip --hidden -q 'desc(A1)'
+  $ hg log -G --hidden
+  x  28b51eb45704 (draft): A0
+  |
+  @  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test
+-------------------------------------
+
+  $ dotest D.2
+  ## Running testcase D.2
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  remote: 2 new obsolescence markers
+  ## post push state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling from main into pulldest
+  pulling from main
+  searching for changes
+  no changes found
+  2 new obsolescence markers
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-D3.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,90 @@
+
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== D.2 missing prune target (prune in "pushed set") ===
+
+{{{
+}}}
+
+Marker exist from:
+
+ * A' succeed to A
+ * A' (prune)
+
+Command run:
+
+ * hg push
+
+Expected exchange:
+
+ * `A ø⇠o A'`
+ * A' (prune)
+
+
+  $ setuprepos D.2
+  creating test repo for test case D.2
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ hg up -q 0
+  $ mkcommit B
+  created new head
+  $ mkcommit A1
+  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
+  $ hg prune -d '0 0' .
+  1 changesets pruned
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  working directory now at 35b183996678
+  $ hg strip --hidden -q 'desc(A1)'
+  $ hg log -G --hidden
+  @  35b183996678 (draft): B
+  |
+  | x  28b51eb45704 (draft): A0
+  |/
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 6aa67a7b4baa6fb41b06aed38d5b1201436546e2 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6aa67a7b4baa6fb41b06aed38d5b1201436546e2 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test
+-------------------------------------
+
+  $ dotest D.2 O
+  ## Running testcase D.2
+  # testing echange of "O" (a9bdc8b26820)
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 6aa67a7b4baa6fb41b06aed38d5b1201436546e2 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6aa67a7b4baa6fb41b06aed38d5b1201436546e2 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "O" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  no changes found
+  ## post push state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 6aa67a7b4baa6fb41b06aed38d5b1201436546e2 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6aa67a7b4baa6fb41b06aed38d5b1201436546e2 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pulling "a9bdc8b26820" from main into pulldest
+  pulling from main
+  no changes found
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 6aa67a7b4baa6fb41b06aed38d5b1201436546e2 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6aa67a7b4baa6fb41b06aed38d5b1201436546e2 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-exchange-D4.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,125 @@
+
+
+Initial setup
+
+  $ . $TESTDIR/_exc-util.sh
+
+=== D.4 Unknown changeset in between known one ===
+
+.. Mostly a clarification case
+..
+.. {{{
+..     ø⇠◌⇠○
+..     | |/
+..     | ◔
+..     |/
+..     ● O
+..
+.. }}}
+..
+.. Should be treated as A.3 case:
+..
+.. {{{
+..
+..     ø⇠○
+..     | |
+..     | ◔
+..     |/
+..     ● O
+..
+.. }}}
+
+
+initial
+
+  $ setuprepos A.3.a
+  creating test repo for test case A.3.a
+  - pulldest
+  - main
+  - pushdest
+  cd into `main` and proceed with env setup
+  $ cd main
+  $ mkcommit A0
+  $ mkcommit B0
+  $ hg update -q 0
+  $ mkcommit A1
+  created new head
+  $ mkcommit B1
+  $ hg debugobsolete `getid 'desc(A0)'` aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+  $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(A1)'`
+  $ hg debugobsolete `getid 'desc(B0)'` bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
+  $ hg debugobsolete bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb `getid 'desc(B1)'`
+  $ hg log -G --hidden
+  @  069b05c3876d (draft): B1
+  |
+  o  e5ea8f9c7314 (draft): A1
+  |
+  | x  6e72f0a95b5e (draft): B0
+  | |
+  | x  28b51eb45704 (draft): A0
+  |/
+  o  a9bdc8b26820 (public): O
+  
+  $ hg debugobsolete
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  $ cd ..
+  $ cd ..
+
+Actual Test for first version (changeset unknown in remote)
+-----------------------------------------------------------
+
+  $ dotest A.3.a A1
+  ## Running testcase A.3.a
+  # testing echange of "A1" (e5ea8f9c7314)
+  ## initial state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  # obstore: pulldest
+  ## pushing "A1" from main to pushdest
+  pushing to pushdest
+  searching for changes
+  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'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  ## pulling "e5ea8f9c7314" from main into pulldest
+  pulling from main
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to 1 files
+  2 new obsolescence markers
+  (run 'hg update' to get a working copy)
+  ## post pull state
+  # obstore: main
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 069b05c3876d56f62895e853a501ea58ea85f68d 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pushdest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  # obstore: pulldest
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+
+
--- a/tests/test-import.t	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-import.t	Tue Jun 23 16:47:24 2015 -0700
@@ -1,15 +1,14 @@
 
 This feature requires mercurial 3.0
-(and the `only(` revset is 3.0 specific)
+(and the `only()` revset is 3.0 specific)
 
-  $ (hg help revset | grep ' only(') || exit 80
+  $ (hg help revset | grep '"only(' > /dev/null) || exit 80
 
 Test creation of obsolescence marker by path import
 
   $ 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
@@ -65,7 +64,7 @@
      summary:     A
   
   $ hg debugobsolete
-  95b760afef3c234ffb3f9fd391edcb36e60921a4 00c49133f17e5e5a52b6ef1b6d516c0e90b56d8a 0 {'date': '* *', 'user': 'test'} (glob)
+  95b760afef3c234ffb3f9fd391edcb36e60921a4 00c49133f17e5e5a52b6ef1b6d516c0e90b56d8a 0 (*) {'user': 'test'} (glob)
 
   $ hg rollback
   repository tip rolled back to revision 2 (undo import)
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-obsconvert.t	Tue Jun 23 16:47:24 2015 -0700
@@ -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	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-obsolete-push.t	Tue Jun 23 16:47:24 2015 -0700
@@ -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	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-obsolete.t	Tue Jun 23 16:47:24 2015 -0700
@@ -4,6 +4,8 @@
   > allow_push = *
   > [phases]
   > publish=False
+  > [alias]
+  > debugobsolete=debugobsolete -d '0 0'
   > [extensions]
   > hgext.rebase=
   > EOF
@@ -34,7 +36,7 @@
   0d3f46688ccc6e756c7e96cf64c391c411309597
   $ hg debugobsolete 4538525df7e2b9f09423636c61ef63a4cb872a2d 0d3f46688ccc6e756c7e96cf64c391c411309597
   $ hg debugobsolete
-  4538525df7e2b9f09423636c61ef63a4cb872a2d 0d3f46688ccc6e756c7e96cf64c391c411309597 0 {'date': '', 'user': 'test'} (glob)
+  4538525df7e2b9f09423636c61ef63a4cb872a2d 0d3f46688ccc6e756c7e96cf64c391c411309597 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
 
 
 Test hidden() revset
@@ -65,7 +67,7 @@
   2
   - 4538525df7e2
 
-Test that obsolete parent a properly computed
+Test that obsolete precursors are properly computed
 
   $ qlog -r 'precursors(.)' --hidden
   2
@@ -85,13 +87,13 @@
   @@ -0,0 +1,1 @@
   +obsol_c
 
-Test that obsolete successors a properly computed
+Test that obsolete successors are properly computed
 
   $ qlog -r 'successors(2)' --hidden
   3
   - 0d3f46688ccc
 
-test obsolete changeset with no-obsolete descendant
+test obsolete changeset with non-obsolete descendant
   $ hg up 1 -q
   $ mkcommit "obsol_c'" # 4 (on 1)
   created new head
@@ -181,6 +183,8 @@
   adding manifests
   adding file changes
   added 5 changesets with 5 changes to 5 files (+1 heads)
+  pushing 2 obsolescence markers (* bytes) (glob)
+  2 obsolescence markers added
   $ hg -R ../other-new verify
   checking changesets
   checking manifests
@@ -234,6 +238,8 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
+  pushing 3 obsolescence markers (* bytes) (glob)
+  1 obsolescence markers added
   $ qlog -R ../other-new
   5
   - 95de7fc6918d
@@ -249,12 +255,14 @@
   2
   - 0d3f46688ccc
 
-Pushing again does not advertise extinct changeset
+Pushing again does not advertise extinct changesets
 
   $ hg push ../other-new
   pushing to ../other-new
   searching for changes
   no changes found
+  pushing 3 obsolescence markers (* bytes) (glob)
+  0 obsolescence markers added
   [1]
 
   $ hg up --hidden -q .^ # 3
@@ -270,7 +278,9 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to [12] files \(\+1 heads\) (re)
-  \(run 'hg heads( \.)?' to see heads, 'hg merge' to merge\) (re)
+  pull obsolescence markers
+  1 obsolescence markers added
+  (run 'hg heads' to see heads, 'hg merge' to merge)
   $ qlog -R ../other-new
   6
   - 909a0fb57e5d
@@ -283,9 +293,9 @@
   0
   - 1f0dee641bb7
 
-pushing to stuff that doesn't support obsolete
+pushing to stuff that doesn't support obsolescence
 
-DISABLED. the _enable switch it global :-/
+DISABLED. the _enable switch is global :-/
 
 ..  $ hg init ../other-old
 ..  > # XXX I don't like this but changeset get published otherwise
@@ -359,7 +369,9 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to [12] files \(\+1 heads\) (re)
-  \(run 'hg heads( \.)?' to see heads, 'hg merge' to merge\) (re)
+  pull obsolescence markers
+  1 obsolescence markers added
+  (run 'hg heads' to see heads, 'hg merge' to merge)
 
   $ hg up -q 7 # to check rollback update behavior
   $ qlog
@@ -444,7 +456,7 @@
   0
   - 1f0dee641bb7
 
-Check that auto update ignore hidden changeset
+Check that auto update ignores hidden changeset
   $ hg up 0
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg up 
@@ -452,7 +464,7 @@
   $ hg id -n
   8
 
-Check that named update do too
+Check that named update does too
 
   $ hg update default
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
@@ -475,33 +487,38 @@
   o  0 - 1f0dee641bb7 add a
   
 
-  $ hg log -G  --template='{rev} - {node|short}\n' --hidden
-  x  9 - 83b5778897ad
+  $ hg log -G  --template='{rev} - {node|short} {desc}\n' --hidden
+  x  9 - 83b5778897ad add toto
   
-  o  8 - 159dfc9fa5d3
+  o  8 - 159dfc9fa5d3 add obsol_d''
   |
-  | x  7 - 909a0fb57e5d
+  | x  7 - 909a0fb57e5d add obsol_d'
   |/
-  | x  6 - 95de7fc6918d
+  | x  6 - 95de7fc6918d add obsol_d
   |/
-  | x  5 - a7a6f2b5d8a5
+  | x  5 - a7a6f2b5d8a5 add d
   |/
-  | o  4 - 725c380fe99b
+  | o  4 - 725c380fe99b add obsol_c'
   | |
-  x |  3 - 0d3f46688ccc
+  x |  3 - 0d3f46688ccc add obsol_c
   |/
-  | x  2 - 4538525df7e2
+  | x  2 - 4538525df7e2 add c
   |/
-  o  1 - 7c3bad9141dc
+  o  1 - 7c3bad9141dc add b
   |
-  o  0 - 1f0dee641bb7
+  o  0 - 1f0dee641bb7 add a
   
 
-should not rebase extinct changeset
+should not rebase extinct changesets
 
 #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
+  10:2033b4e49474
   $ hg up tip
   ? files updated, 0 files merged, 0 files removed, 0 files unresolved (glob)
   $ hg log -G --template='{rev} - {node|short} {desc}\n'
@@ -517,7 +534,7 @@
   
 
 Does not complain about new head if you obsolete the old one
-(re necesarry when we start runnind discovery on unfiltered repo in core)
+(re necessary when we start running discovery on unfiltered repo in core)
 
   $ hg push ../other-new --traceback
   pushing to ../other-new
@@ -526,6 +543,8 @@
   adding manifests
   adding file changes
   added 2 changesets with 1 changes to [12] files (re)
+  pushing 7 obsolescence markers (* bytes) (glob)
+  3 obsolescence markers added
   $ hg up -q 10
   $ mkcommit "obsol_d'''"
   created new head
@@ -537,6 +556,8 @@
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
+  pushing 8 obsolescence markers (* bytes) (glob)
+  1 obsolescence markers added
   $ cd ..
 
 check bumped detection
@@ -623,17 +644,17 @@
      summary:     add a
   
   $ hg debugobsolete | grep -v 33d458d86621f3186c40bfccd77652f4a122743e
-  4538525df7e2b9f09423636c61ef63a4cb872a2d 0d3f46688ccc6e756c7e96cf64c391c411309597 0 {'date': '', 'user': 'test'} (glob)
-  0d3f46688ccc6e756c7e96cf64c391c411309597 725c380fe99b5e76613493f0903e8d11ddc70d54 0 {'date': '', 'user': 'test'} (glob)
-  a7a6f2b5d8a54b81bc7aa2fba2934ad6d700a79e 95de7fc6918dea4c9c8d5382f50649794b474c4a 0 {'date': '', 'user': 'test'} (glob)
-  95de7fc6918dea4c9c8d5382f50649794b474c4a 909a0fb57e5d909f353d89e394ffd7e0890fec88 0 {'date': '', 'user': 'test'} (glob)
-  909a0fb57e5d909f353d89e394ffd7e0890fec88 159dfc9fa5d334d7e03a0aecfc7f7ab4c3431fea 0 {'date': '', 'user': 'test'} (glob)
-  1f0dee641bb7258c56bd60e93edfa2405381c41e 83b5778897adafb967ef2f75be3aaa4fce49a4cc 0 {'date': '', 'user': 'test'} (glob)
-  83b5778897adafb967ef2f75be3aaa4fce49a4cc 0 {'date': '', 'user': 'test'} (glob)
-  0d3f46688ccc6e756c7e96cf64c391c411309597 2033b4e494742365851fac84d276640cbf52833e 0 {'date': '* *', 'user': 'test'} (glob)
-  159dfc9fa5d334d7e03a0aecfc7f7ab4c3431fea 9468a5f5d8b2c5d91e17474e95ae4791e9718fdf 0 {'date': '* *', 'user': 'test'} (glob)
-  9468a5f5d8b2c5d91e17474e95ae4791e9718fdf 6db5e282cb91df5c43ff1f1287c119ff83230d42 0 {'date': '', 'user': 'test'} (glob)
-  0b1b6dd009c037985363e2290a0b579819f659db 705ab2a6b72e2cd86edb799ebe15f2695f86143e 0 {'date': '* *', 'user': 'test'} (glob)
+  4538525df7e2b9f09423636c61ef63a4cb872a2d 0d3f46688ccc6e756c7e96cf64c391c411309597 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  0d3f46688ccc6e756c7e96cf64c391c411309597 725c380fe99b5e76613493f0903e8d11ddc70d54 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  a7a6f2b5d8a54b81bc7aa2fba2934ad6d700a79e 95de7fc6918dea4c9c8d5382f50649794b474c4a 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  95de7fc6918dea4c9c8d5382f50649794b474c4a 909a0fb57e5d909f353d89e394ffd7e0890fec88 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  909a0fb57e5d909f353d89e394ffd7e0890fec88 159dfc9fa5d334d7e03a0aecfc7f7ab4c3431fea 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  1f0dee641bb7258c56bd60e93edfa2405381c41e 83b5778897adafb967ef2f75be3aaa4fce49a4cc 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  83b5778897adafb967ef2f75be3aaa4fce49a4cc 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  0d3f46688ccc6e756c7e96cf64c391c411309597 2033b4e494742365851fac84d276640cbf52833e 0 (*) {'user': 'test'} (glob)
+  159dfc9fa5d334d7e03a0aecfc7f7ab4c3431fea 9468a5f5d8b2c5d91e17474e95ae4791e9718fdf 0 (*) {'user': 'test'} (glob)
+  9468a5f5d8b2c5d91e17474e95ae4791e9718fdf 6db5e282cb91df5c43ff1f1287c119ff83230d42 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
+  0b1b6dd009c037985363e2290a0b579819f659db 705ab2a6b72e2cd86edb799ebe15f2695f86143e 0 (*) {'user': 'test'} (glob)
 #no produced by 2.3
 33d458d86621f3186c40bfccd77652f4a122743e 3734a65252e69ddcced85901647a4f335d40de1e 0 {'date': '* *', 'user': 'test'} (glob)
 
@@ -687,3 +708,132 @@
   $ hg export 9468a5f5d8b2 | hg import -
   applying patch from stdin
   1 new unstable changesets
+
+
+Relevant marker computation
+==============================
+
+  $ hg log -G --hidden
+  @  changeset:   17:a5f7a21fe7bc
+  |  tag:         tip
+  |  parent:      2:4538525df7e2
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add obsol_d''
+  |
+  | o  changeset:   16:50f11e5e3a63
+  | |  parent:      11:9468a5f5d8b2
+  | |  user:        test
+  | |  date:        Thu Jan 01 00:00:00 1970 +0000
+  | |  summary:     add obsolet_conflicting_d
+  | |
+  | | o  changeset:   15:705ab2a6b72e
+  | | |  parent:      10:2033b4e49474
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:00 1970 +0000
+  | | |  summary:     add f
+  | | |
+  | | | x  changeset:   14:33d458d86621
+  | | | |  user:        test
+  | | | |  date:        Thu Jan 01 00:00:00 1970 +0000
+  | | | |  summary:     temporary amend commit for 0b1b6dd009c0
+  | | | |
+  | | | x  changeset:   13:0b1b6dd009c0
+  | | |/   parent:      10:2033b4e49474
+  | | |    user:        test
+  | | |    date:        Thu Jan 01 00:00:00 1970 +0000
+  | | |    summary:     add f
+  | | |
+  | | | o  changeset:   12:6db5e282cb91
+  | | |/   parent:      10:2033b4e49474
+  | | |    user:        test
+  | | |    date:        Thu Jan 01 00:00:00 1970 +0000
+  | | |    summary:     add obsol_d'''
+  | | |
+  | o |  changeset:   11:9468a5f5d8b2
+  | |/   user:        test
+  | |    date:        Thu Jan 01 00:00:00 1970 +0000
+  | |    summary:     add obsol_d''
+  | |
+  | o  changeset:   10:2033b4e49474
+  | |  parent:      4:725c380fe99b
+  | |  user:        test
+  | |  date:        Thu Jan 01 00:00:00 1970 +0000
+  | |  summary:     add obsol_c
+  | |
+  | | x  changeset:   9:83b5778897ad
+  | |    parent:      -1:000000000000
+  | |    user:        test
+  | |    date:        Thu Jan 01 00:00:00 1970 +0000
+  | |    summary:     add toto
+  | |
+  | | x  changeset:   8:159dfc9fa5d3
+  | | |  parent:      3:0d3f46688ccc
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:00 1970 +0000
+  | | |  summary:     add obsol_d''
+  | | |
+  | | | x  changeset:   7:909a0fb57e5d
+  | | |/   parent:      3:0d3f46688ccc
+  | | |    user:        test
+  | | |    date:        Thu Jan 01 00:00:00 1970 +0000
+  | | |    summary:     add obsol_d'
+  | | |
+  | | | x  changeset:   6:95de7fc6918d
+  | | |/   parent:      3:0d3f46688ccc
+  | | |    user:        test
+  | | |    date:        Thu Jan 01 00:00:00 1970 +0000
+  | | |    summary:     add obsol_d
+  | | |
+  | | | x  changeset:   5:a7a6f2b5d8a5
+  | | |/   parent:      3:0d3f46688ccc
+  | | |    user:        test
+  | | |    date:        Thu Jan 01 00:00:00 1970 +0000
+  | | |    summary:     add d
+  | | |
+  | o |  changeset:   4:725c380fe99b
+  | | |  parent:      1:7c3bad9141dc
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:00 1970 +0000
+  | | |  summary:     add obsol_c'
+  | | |
+  | | x  changeset:   3:0d3f46688ccc
+  | |/   parent:      1:7c3bad9141dc
+  | |    user:        test
+  | |    date:        Thu Jan 01 00:00:00 1970 +0000
+  | |    summary:     add obsol_c
+  | |
+  x |  changeset:   2:4538525df7e2
+  |/   user:        test
+  |    date:        Thu Jan 01 00:00:00 1970 +0000
+  |    summary:     add c
+  |
+  o  changeset:   1:7c3bad9141dc
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     add b
+  |
+  o  changeset:   0:1f0dee641bb7
+     user:        test
+     date:        Thu Jan 01 00:00:00 1970 +0000
+     summary:     add a
+  
+
+Simple rewrite
+
+  $ 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 debugobsolete --rev 15
+  0b1b6dd009c037985363e2290a0b579819f659db 705ab2a6b72e2cd86edb799ebe15f2695f86143e 0 (*) {'user': 'test'} (glob)
+  33d458d86621f3186c40bfccd77652f4a122743e 0 {0b1b6dd009c037985363e2290a0b579819f659db} (*) {'user': 'test'} (glob)
+
+Transitive rewrite
+
+  $ 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-oldconvert.t	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-oldconvert.t	Tue Jun 23 16:47:24 2015 -0700
@@ -54,7 +54,7 @@
      summary:     add a
   
   $ hg debugobsolete
-  7c3bad9141dcb46ff89abf5f61856facd56e476c d67cd0334eeecfded222fed9009f0db4beb57585 0 {'date': '* *', 'user': 'test'} (glob)
+  7c3bad9141dcb46ff89abf5f61856facd56e476c d67cd0334eeecfded222fed9009f0db4beb57585 0 (*) {'user': 'test'} (glob)
   $ hg debugconvertobsolete
   nothing to do
   0 obsolete marker converted
@@ -108,7 +108,7 @@
   $ hg debugconvertobsolete --traceback
   3 obsolete marker converted
   $ hg debugobsolete
-  7c3bad9141dcb46ff89abf5f61856facd56e476c d67cd0334eeecfded222fed9009f0db4beb57585 0 {'date': '* *', 'user': 'test'} (glob)
-  3e03d82708d4da97a92158558dd13386d8f09ad5 3218406b50ed13480765e7c260669620f37fba6e 0 {'date': '* *', 'user': 'Pierre-Yves David <pierre-yves.david@ens-lyon.org>'} (glob)
-  5c722672795c3a2cb94d0cc9a821c394c1475f87 0 {'date': '* *', 'user': 'Pierre-Yves David <pierre-yves.david@logilab.fr>'} (glob)
-  2c3784e102bb34ccc93862af5bd6d609ee30c577 0 {'date': '* *', 'user': 'Pierre-Yves David <pierre-yves.david@logilab.fr>'} (glob)
+  7c3bad9141dcb46ff89abf5f61856facd56e476c d67cd0334eeecfded222fed9009f0db4beb57585 0 (*) {'user': 'test'} (glob)
+  3e03d82708d4da97a92158558dd13386d8f09ad5 3218406b50ed13480765e7c260669620f37fba6e 0 (Tue May 08 20:55:23 2012 +0200) {'user': 'Pierre-Yves David <pierre-yves.david@ens-lyon.org>'}
+  5c722672795c3a2cb94d0cc9a821c394c1475f87 0 (Wed May 09 11:57:52 2012 +0200) {'user': 'Pierre-Yves David <pierre-yves.david@logilab.fr>'}
+  2c3784e102bb34ccc93862af5bd6d609ee30c577 0 (Wed May 09 11:57:52 2012 +0200) {'user': 'Pierre-Yves David <pierre-yves.david@logilab.fr>'}
--- a/tests/test-prev-next.t	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-prev-next.t	Tue Jun 23 16:47:24 2015 -0700
@@ -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
@@ -48,13 +69,14 @@
      no-move                   2:4e26ef31f919
   $ hg up 1
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
-  $ hg next
+  (leaving bookmark mark)
+  $ 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	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-prune.t	Tue Jun 23 16:47:24 2015 -0700
@@ -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
 
@@ -42,17 +41,20 @@
   1 changesets pruned
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   working directory now at 47d2a3944de8
+  $ hg bookmark
+   * BABAR                     3:47d2a3944de8
   $ hg debugobsolete
-  9d206ffc875e1bc304590549be293be36821e66c 0 {'date': '314064000 0', 'user': 'blah'} (glob)
+  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
 
-prune leaving unstability behind
+prune leaving instability behind
 
   $ hg prune 1
   1 changesets pruned
   2 new unstable changesets
+  $ hg book -i BABAR
   $ hg debugobsolete
-  9d206ffc875e1bc304590549be293be36821e66c 0 {'date': '314064000 0', 'user': 'blah'} (glob)
-  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {'date': '*', 'user': 'test'} (glob)
+  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
+  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (*) {'user': 'test'} (glob)
 
 pruning multiple changeset at once
 
@@ -61,10 +63,10 @@
   0 files updated, 0 files merged, 3 files removed, 0 files unresolved
   working directory now at 1f0dee641bb7
   $ hg debugobsolete
-  9d206ffc875e1bc304590549be293be36821e66c 0 {'date': '314064000 0', 'user': 'blah'} (glob)
-  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {'date': '*', 'user': 'test'} (glob)
-  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {'date': '*', 'user': 'test'} (glob)
-  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {'date': '*', 'user': 'test'} (glob)
+  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
+  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (*) {'user': 'test'} (glob)
+  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (*) {'user': 'test'} (glob)
+  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (*) {'user': 'test'} (glob)
 
 cannot prune public changesets
 
@@ -73,10 +75,10 @@
   (see "hg help phases" for details)
   [255]
   $ hg debugobsolete
-  9d206ffc875e1bc304590549be293be36821e66c 0 {'date': '314064000 0', 'user': 'blah'} (glob)
-  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {'date': '*', 'user': 'test'} (glob)
-  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {'date': '*', 'user': 'test'} (glob)
-  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {'date': '*', 'user': 'test'} (glob)
+  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
+  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (*) {'user': 'test'} (glob)
+  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (*) {'user': 'test'} (glob)
+  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (*) {'user': 'test'} (glob)
 
 Check successors addition
 ----------------------------
@@ -122,11 +124,11 @@
   4 files updated, 0 files merged, 4 files removed, 0 files unresolved
   working directory now at 6e8148413dd5
   $ hg debugobsolete
-  9d206ffc875e1bc304590549be293be36821e66c 0 {'date': '314064000 0', 'user': 'blah'} (glob)
-  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {'date': '*', 'user': 'test'} (glob)
-  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {'date': '*', 'user': 'test'} (glob)
-  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {'date': '*', 'user': 'test'} (glob)
-  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 {'date': '*', 'user': 'test'} (glob)
+  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
+  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (*) {'user': 'test'} (glob)
+  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (*) {'user': 'test'} (glob)
+  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (*) {'user': 'test'} (glob)
+  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 (*) {'user': 'test'} (glob)
   $ hg log -G
   @  12:6e8148413dd5[] (stable/draft) add nE
   |
@@ -150,12 +152,12 @@
   $ hg prune 'desc("add dd")' -s 'desc("add nD")' -s 'desc("add nC")'
   1 changesets pruned
   $ hg debugobsolete
-  9d206ffc875e1bc304590549be293be36821e66c 0 {'date': '314064000 0', 'user': 'blah'} (glob)
-  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {'date': '*', 'user': 'test'} (glob)
-  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {'date': '*', 'user': 'test'} (glob)
-  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {'date': '*', 'user': 'test'} (glob)
-  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 {'date': '*', 'user': 'test'} (glob)
-  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 {'date': '**', 'user': 'test'} (glob)
+  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
+  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (*) {'user': 'test'} (glob)
+  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (*) {'user': 'test'} (glob)
+  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (*) {'user': 'test'} (glob)
+  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 (*) {'user': 'test'} (glob)
+  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 (*) {'user': 'test'} (glob)
   $ hg log -G
   @  12:6e8148413dd5[] (stable/draft) add nE
   |
@@ -178,26 +180,26 @@
   abort: Can't use multiple successors for multiple precursors
   [255]
   $ hg debugobsolete
-  9d206ffc875e1bc304590549be293be36821e66c 0 {'date': '314064000 0', 'user': 'blah'} (glob)
-  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {'date': '*', 'user': 'test'} (glob)
-  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {'date': '*', 'user': 'test'} (glob)
-  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {'date': '*', 'user': 'test'} (glob)
-  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 {'date': '*', 'user': 'test'} (glob)
-  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 {'date': '**', 'user': 'test'} (glob)
+  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
+  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (*) {'user': 'test'} (glob)
+  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (*) {'user': 'test'} (glob)
+  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (*) {'user': 'test'} (glob)
+  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 (*) {'user': 'test'} (glob)
+  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 (*) {'user': 'test'} (glob)
 
 two old, one new:
 
   $ hg prune 'desc("add cc")' 'desc("add bb")' -s 'desc("add nB")'
   2 changesets pruned
   $ hg debugobsolete
-  9d206ffc875e1bc304590549be293be36821e66c 0 {'date': '314064000 0', 'user': 'blah'} (glob)
-  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {'date': '*', 'user': 'test'} (glob)
-  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {'date': '*', 'user': 'test'} (glob)
-  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {'date': '*', 'user': 'test'} (glob)
-  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 {'date': '*', 'user': 'test'} (glob)
-  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 {'date': '**', 'user': 'test'} (glob)
-  814c38b95e72dfe2cbf675b1649ea9d780c89a80 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 {'date': '*', 'user': 'test'} (glob)
-  354011cd103f58bbbd9091a3cee6d6a6bd0dddf7 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 {'date': '*', 'user': 'test'} (glob)
+  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
+  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (*) {'user': 'test'} (glob)
+  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (*) {'user': 'test'} (glob)
+  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (*) {'user': 'test'} (glob)
+  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 (*) {'user': 'test'} (glob)
+  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 (*) {'user': 'test'} (glob)
+  814c38b95e72dfe2cbf675b1649ea9d780c89a80 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 (*) {'user': 'test'} (glob)
+  354011cd103f58bbbd9091a3cee6d6a6bd0dddf7 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 (*) {'user': 'test'} (glob)
 
 two old, two new with --biject
 
@@ -212,16 +214,16 @@
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   working directory now at 1f0dee641bb7
   $ hg debugobsolete
-  9d206ffc875e1bc304590549be293be36821e66c 0 {'date': '314064000 0', 'user': 'blah'} (glob)
-  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {'date': '*', 'user': 'test'} (glob)
-  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {'date': '*', 'user': 'test'} (glob)
-  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {'date': '*', 'user': 'test'} (glob)
-  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 {'date': '*', 'user': 'test'} (glob)
-  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 {'date': '**', 'user': 'test'} (glob)
-  814c38b95e72dfe2cbf675b1649ea9d780c89a80 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 {'date': '* *', 'user': 'test'} (glob)
-  354011cd103f58bbbd9091a3cee6d6a6bd0dddf7 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 {'date': '* *', 'user': 'test'} (glob)
-  cb7f8f706a6532967b98cf8583a81baab79a0fa7 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 {'date': '* *', 'user': 'test'} (glob)
-  21b6f2f1cece8c10326e575dd38239189d467190 6e8148413dd541855b72a920a90c06fca127c7e7 0 {'date': '* *', 'user': 'test'} (glob)
+  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'user': 'blah'}
+  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (*) {'user': 'test'} (glob)
+  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (*) {'user': 'test'} (glob)
+  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (*) {'user': 'test'} (glob)
+  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 (*) {'user': 'test'} (glob)
+  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 (*) {'user': 'test'} (glob)
+  814c38b95e72dfe2cbf675b1649ea9d780c89a80 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 (*) {'user': 'test'} (glob)
+  354011cd103f58bbbd9091a3cee6d6a6bd0dddf7 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 (*) {'user': 'test'} (glob)
+  cb7f8f706a6532967b98cf8583a81baab79a0fa7 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 (*) {'user': 'test'} (glob)
+  21b6f2f1cece8c10326e575dd38239189d467190 6e8148413dd541855b72a920a90c06fca127c7e7 0 (*) {'user': 'test'} (glob)
 
 test hg prune -B bookmark
 yoinked from test-mq-strip.t
@@ -236,6 +238,7 @@
   $ hg bookmark -r 'c' 'delete'
   $ hg up -C todelete
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  (activating bookmark todelete)
   $ hg prune -B nostrip
   bookmark 'nostrip' deleted
   abort: nothing to prune
@@ -244,10 +247,12 @@
   $ hg prune -B todelete
   1 changesets pruned
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  (leaving bookmark todelete)
   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
@@ -259,5 +264,71 @@
   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
+  markers total:                      4
+      for known precursors:           4
+      with parents data:              [04] (re)
+  markers with no successors:         4
+                1 successors:         0
+                2 successors:         0
+      more than 2 successors:         0
+      available  keys:
+                 user:                4
+  disconnected clusters:              4
+          any known node:             4
+          smallest length:            1
+          longer length:              1
+          median length:              1
+          mean length:                1
+      using parents data:             4
+          any known node:             4
+          smallest length:            1
+          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
+  
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-sharing.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,544 @@
+Test script based on sharing.rst: ensure that all scenarios in that
+document work as advertised.
+
+Setting things up
+
+  $ cat >> $HGRCPATH <<EOF
+  > [alias]
+  > shortlog = log --template '{rev}:{node|short}  {phase}  {desc|firstline}\n'
+  > [extensions]
+  > rebase =
+  > EOF
+  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
+  $ hg init public
+  $ 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
+  > EOF
+
+To start things off, let's make one public, immutable changeset::
+
+  $ cd test-repo
+  $ echo 'my new project' > file1
+  $ hg add file1
+  $ hg commit -m'create new project'
+  $ 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 -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. ::
+
+  $ echo 'fix fix fix' > file1
+  $ hg commit -m'prelim change'
+  $ hg push -q ../test-repo
+
+Figure SG01 (roughly)
+  $ hg shortlog -G
+  @  1:f6490818a721  draft  prelim change
+  |
+  o  0:0dc9c9f6ab91  public  create new project
+  
+Now let's switch to test-repo to test our change and amend::
+  $ cd ../test-repo
+  $ hg update -q
+  $ echo 'Fix fix fix.' > file1
+  $ hg amend -m'fix bug 37'
+
+Figure SG02
+  $ hg shortlog --hidden -G
+  @  3:60ffde5765c5  draft  fix bug 37
+  |
+  | x  2:2a039763c0f4  draft  temporary amend commit for f6490818a721
+  | |
+  | x  1:f6490818a721  draft  prelim change
+  |/
+  o  0:0dc9c9f6ab91  public  create new project
+  
+Pull into dev-repo: obsolescence markers are transferred, but not
+the new obsolete changeset.
+  $ cd ../dev-repo
+  $ 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
+  @  2:60ffde5765c5  draft  fix bug 37
+  |
+  | x  1:f6490818a721  draft  prelim change
+  |/
+  o  0:0dc9c9f6ab91  public  create new project
+  
+Amend again in dev-repo
+  $ echo 'Fix, fix, and fix.' > file1
+  $ hg amend
+  $ hg push -q
+
+Figure SG04 (dev-repo)
+  $ hg shortlog --hidden -G
+  @  4:de6151c48e1c  draft  fix bug 37
+  |
+  | x  3:ad19d3570adb  draft  temporary amend commit for 60ffde5765c5
+  | |
+  | x  2:60ffde5765c5  draft  fix bug 37
+  |/
+  | x  1:f6490818a721  draft  prelim change
+  |/
+  o  0:0dc9c9f6ab91  public  create new project
+  
+Figure SG04 (test-repo)
+  $ cd ../test-repo
+  $ hg update
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg shortlog --hidden -G
+  @  4:de6151c48e1c  draft  fix bug 37
+  |
+  | x  3:60ffde5765c5  draft  fix bug 37
+  |/
+  | x  2:2a039763c0f4  draft  temporary amend commit for f6490818a721
+  | |
+  | x  1:f6490818a721  draft  prelim change
+  |/
+  o  0:0dc9c9f6ab91  public  create new project
+  
+This bug fix is finished. We can push it to the public repository.
+  $ hg push
+  pushing to $TESTTMP/public (glob)
+  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)
+  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
+  o  1:de6151c48e1c  public  fix bug 37
+  |
+  o  0:0dc9c9f6ab91  public  create new project
+  
+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 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 with multiple developers: code review
+
+  $ cd ..
+  $ 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
+
+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)'
+  $ hg shortlog -r .
+  4:2fe6c4bd32d0  draft  fix bug 24 (v1)
+
+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
+  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)'
+
+Bob 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)'
+  $ 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)
+  |
+
+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)
+  |
+  | @  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 '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
+  working directory is now at 5ad6037c046c
+  $ hg log -q -r 'divergent()'
+
+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)
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-simple4server-bundle2.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,169 @@
+
+  $ cat >> $HGRCPATH <<EOF
+  > [defaults]
+  > amend=-d "0 0"
+  > [web]
+  > push_ssl = false
+  > allow_push = *
+  > [phases]
+  > publish = False
+  > [experimental]
+  > bundle2-exp=True
+  > EOF
+
+  $ mkcommit() {
+  >    echo "$1" > "$1"
+  >    hg add "$1"
+  >    hg ci -m "add $1"
+  > }
+
+setup repo
+
+  $ hg init server
+  $ echo "[extensions]" >> ./server/.hg/hgrc
+  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/simple4server.py" >> ./server/.hg/hgrc
+  $ hg serve -R server -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
+  $ cat hg.pid >> $DAEMON_PIDS
+
+  $ hg clone http://localhost:$HGPORT/ client
+  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
+
+Smoke testing
+===============
+
+  $ cd client
+  $ mkcommit 0
+  $ mkcommit a
+  $ hg push
+  pushing to http://localhost:$HGPORT/
+  searching for changes
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
+  $ hg pull
+  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
+  adding changesets
+  adding manifests
+  adding file changes
+  added 2 changesets with 2 changes to 2 files
+  (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
+===================
+
+  $ 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)
+
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  bookmarks	
+  namespaces	
+  obsolete	
+  phases	
+
+Push
+=============
+
+  $ echo 'A' > a
+  $ hg amend
+  $ hg push
+  pushing to http://localhost:$HGPORT/
+  searching for changes
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files (+1 heads)
+  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
+=============
+
+  $ hg -R ../other pull
+  pulling from http://localhost:$HGPORT/
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 1 changes to [12] files \(\+1 heads\) (re)
+  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 ..
+
+Test disabling obsolete advertisement
+===========================================
+(used by bitbucket to select which repo use evolve)
+
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  bookmarks	
+  namespaces	
+  obsolete	
+  phases	
+  $ 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
+  $ $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
+
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  bookmarks	
+  namespaces	
+  phases	
+  $ 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
+
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  bookmarks	
+  namespaces	
+  obsolete	
+  phases	
+  $ 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)
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-simple4server.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,170 @@
+
+  $ cat >> $HGRCPATH <<EOF
+  > [defaults]
+  > amend=-d "0 0"
+  > [web]
+  > push_ssl = false
+  > allow_push = *
+  > [phases]
+  > publish = False
+  > [extensions]
+  > EOF
+
+  $ mkcommit() {
+  >    echo "$1" > "$1"
+  >    hg add "$1"
+  >    hg ci -m "add $1"
+  > }
+
+setup repo
+
+  $ hg init server
+  $ echo "[extensions]" >> ./server/.hg/hgrc
+  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/simple4server.py" >> ./server/.hg/hgrc
+  $ hg serve -R server -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
+  $ cat hg.pid >> $DAEMON_PIDS
+
+  $ hg clone http://localhost:$HGPORT/ client
+  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
+
+Smoke testing
+===============
+
+  $ cd client
+  $ mkcommit 0
+  $ mkcommit a
+  $ hg push
+  pushing to http://localhost:$HGPORT/
+  searching for changes
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
+  $ hg pull
+  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
+  adding changesets
+  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
+===================
+
+  $ 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)
+
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  bookmarks	
+  namespaces	
+  obsolete	
+  phases	
+
+Push
+=============
+
+  $ echo 'A' > a
+  $ hg amend
+  $ hg push
+  pushing to http://localhost:$HGPORT/
+  searching for changes
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 1 changesets with 1 changes to 1 files (+1 heads)
+  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
+=============
+
+  $ hg -R ../other pull
+  pulling from http://localhost:$HGPORT/
+  searching for changes
+  adding changesets
+  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)
+  $ cat ../errors.log
+  $ hg -R ../other pull
+  pulling from http://localhost:$HGPORT/
+  searching for changes
+  no changes found
+  $ cat ../errors.log
+
+  $ cd ..
+
+Test disabling obsolete advertisement
+===========================================
+(used by bitbucket to select which repo use evolve)
+
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  bookmarks	
+  namespaces	
+  obsolete	
+  phases	
+  $ 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
+  $ $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
+
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  bookmarks	
+  namespaces	
+  phases	
+  $ 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
+
+  $ wget -q -O - "http://localhost:$HGPORT/?cmd=listkeys&namespace=namespaces" | sort
+  bookmarks	
+  namespaces	
+  obsolete	
+  phases	
+  $ 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	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-stabilize-conflict.t	Tue Jun 23 16:47:24 2015 -0700
@@ -1,6 +1,6 @@
-=================================================================
-This files test the proper behavior of evo during merge conflict.
-=================================================================
+=========================================================
+Test the proper behavior of evolve during merge conflict.
+=========================================================
 
 Initial setup
 
@@ -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
 
@@ -59,6 +59,7 @@
 ----------------------------------
 
   $ hg gdown
+  gdown have been deprecated in favor of previous
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   [1] babar count up to ten
   $ safesed 's/huit/eight/' babar
@@ -80,6 +81,7 @@
   move:[2] babar count up to fifteen
   atop:[4] babar count up to ten
   merging babar
+  working directory is now at 71c18f70c34f
   $ hg resolve -l
   $ hg log -G
   @  changeset:   5:71c18f70c34f
@@ -105,6 +107,7 @@
 --------------------------------------------------
 
   $ hg gdown
+  gdown have been deprecated in favor of previous
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   [4] babar count up to ten
   $ safesed 's/dix/ten/' babar
@@ -127,7 +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
@@ -140,7 +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
@@ -162,8 +165,9 @@
   reverting babar
   $ safesed 's/dix/ten/' babar
   $ 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
@@ -183,12 +187,13 @@
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     babar count up to five
   
-proper behavior with conflict using an external merge tools
------------------------------------------------------------
+proper behavior with conflict using an external merge tool
+----------------------------------------------------------
 
   $ safesed 's/merge=.*/merge=touch/' $HGRCPATH
   $ safesed 's/touch.gui=.*/touch.gui=false/' $HGRCPATH
   $ hg gdown
+  gdown have been deprecated in favor of previous
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   [7] babar count up to ten
   $ safesed 's/ten/zehn/' babar
@@ -205,16 +210,17 @@
   $ hg amend
   1 new unstable changesets
   $ safesed 's/interactive=.*/interactive=true/' $HGRCPATH
-  $ HGMERGE=touch hg evolve <<EOF
+  $ hg evolve --tool touch <<EOF
   > n
   > EOF
   move:[8] babar count up to fifteen
   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
@@ -227,7 +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	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-stabilize-order.t	Tue Jun 23 16:47:24 2015 -0700
@@ -2,7 +2,6 @@
   > [defaults]
   > amend=-d "0 0"
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
@@ -35,12 +34,14 @@
   o  0:c471ef929e6a@default(draft) addroot
   
   $ hg gdown
+  gdown have been deprecated in favor of previous
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   [2] addb
   $ echo b >> b
   $ hg amend
   1 new unstable changesets
   $ hg gdown
+  gdown have been deprecated in favor of previous
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   [1] adda
   $ echo a >> a
@@ -68,7 +69,11 @@
   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
   |
@@ -83,7 +88,7 @@
   o  0:c471ef929e6a@default(draft) addroot
   
 
-Test stabilizing a descendant predecessors child
+Test stabilizing a descendant predecessor's child
 
   $ hg up 7
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
@@ -96,16 +101,20 @@
   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
   --- successors.old* (glob)
   +++ successors.new* (glob)
   @@ -3,3 +3,4 @@
-   93418d2c0979643ad446f621195e78720edb05b4 005fe5914f78e8bc64c7eba28117b0b1fa210d0d 0 {'date': '* *', 'user': 'test'} (glob)
-   7a7d76dc97c57751de9e80f61ed2a639bd03cd24 0 {'date': '* *', 'user': 'test'} (glob)
-   22619daeed78036f80fbd326b6852519c4f0c25e bede829dd2d3b2ae9bf198c23432b250dc964458 0 {'date': '* *', 'user': 'test'} (glob)
-  +7a7552255fb5f8bd745e46fba6f0ca633a4dd716 65095d7d0dd5e4f15503bb7b1f433a5fe9bac052 0 {'date': '* *', 'user': 'test'} (glob)
+   93418d2c0979643ad446f621195e78720edb05b4 005fe5914f78e8bc64c7eba28117b0b1fa210d0d 0 (*) {'user': 'test'} (glob)
+   7a7d76dc97c57751de9e80f61ed2a639bd03cd24 0 {93418d2c0979643ad446f621195e78720edb05b4} (*) {'user': 'test'} (glob)
+   22619daeed78036f80fbd326b6852519c4f0c25e bede829dd2d3b2ae9bf198c23432b250dc964458 0 (*) {'user': 'test'} (glob)
+  +7a7552255fb5f8bd745e46fba6f0ca633a4dd716 65095d7d0dd5e4f15503bb7b1f433a5fe9bac052 0 (*) {'user': 'test'} (glob)
   [1]
 
 
@@ -156,7 +165,11 @@
   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	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-stabilize-result.t	Tue Jun 23 16:47:24 2015 -0700
@@ -25,12 +25,20 @@
   $ hg bookmark changea
   $ hg up 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  (leaving bookmark changea)
   $ echo a >> a
   $ hg amend -m changea
   1 new unstable changesets
-  $ hg evolve -v
+  $ 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
   $ glog --hidden
@@ -45,9 +53,9 @@
   o  0:07f494440405@default(draft) bk:[] adda
   
   $ hg debugobsolete
-  102a90ea7b4a3361e4082ed620918c261189a36a fb9d051ec0a450a4aa2ffc8c324979832ef88065 0 {'date': '* *', 'user': 'test'} (glob)
-  c5727dbded3c3a6877cf60d6bb552a76812cb844 0 {'date': '* *', 'user': 'test'} (glob)
-  cce2c55b896511e0b6e04173c9450ba822ebc740 0 {'date': '* *', 'user': 'test'} (glob)
+  102a90ea7b4a3361e4082ed620918c261189a36a fb9d051ec0a450a4aa2ffc8c324979832ef88065 0 (*) {'user': 'test'} (glob)
+  c5727dbded3c3a6877cf60d6bb552a76812cb844 0 {102a90ea7b4a3361e4082ed620918c261189a36a} (*) {'user': 'test'} (glob)
+  cce2c55b896511e0b6e04173c9450ba822ebc740 0 {102a90ea7b4a3361e4082ed620918c261189a36a} (*) {'user': 'test'} (glob)
 
 Test evolve with conflict
 
@@ -64,6 +72,7 @@
   $ echo 'newer a' >> a
   $ hg ci -m 'newer a'
   $ hg gdown
+  gdown have been deprecated in favor of previous
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   [4] changea
   $ echo 'a' > a
@@ -76,7 +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
@@ -89,17 +98,18 @@
   +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 of late comer with different parent
-==================================================
+Stabilize latecomer with different parent
+=========================================
 
-(the same parent case is handled in test-evolve.t)
+(the same-parent case is handled in test-evolve.t)
 
   $ glog
   @  8:1cf0aacfd363@default(draft) bk:[] newer a
@@ -111,6 +121,7 @@
 Add another commit
 
   $ hg gdown
+  gdown have been deprecated in favor of previous
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   [7] changea
   $ echo 'c' > c
@@ -121,6 +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
@@ -144,7 +156,7 @@
   o  0:07f494440405@default(public) bk:[] adda
   
 
-Stabilize !
+Stabilize!
 
   $ hg evolve --any --dry-run
   recreate:[12] newer a
@@ -153,12 +165,20 @@
   hg update 1cf0aacfd363;
   hg revert --all --rev (73b15c7566e9|d5c7ef82d003); (re)
   hg commit --msg "bumped update to %s" (no-eol)
-  $ hg evolve --any
+  $ 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
   committed as (a7cabd7bd9c2|671b9d7eeaec) (re)
+  working directory is now at (a7cabd7bd9c2|671b9d7eeaec) (re)
   $ glog
   @  14:(a7cabd7bd9c2|671b9d7eeaec)@default\(draft\) bk:\[\] bumped update to 1cf0aacfd363: (re)
   |
@@ -171,8 +191,8 @@
   o  0:07f494440405@default(public) bk:[] adda
   
 
-Stabilize divergenent changesets with same parent
-=================================================
+Stabilize divergent changesets with same parent
+===============================================
 
   $ rm a.orig
   $ hg up 9
@@ -226,9 +246,20 @@
   o  0:07f494440405@default(public) bk:[] adda
   
 
-Stabilize It
+Stabilize it
 
-  $ hg evolve -qn --traceback
+  $ 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
+  perform evolve? [Ny] y
   hg update -c eacc9c8240fe &&
   hg merge d2f173e25686 &&
   hg commit -m "auto merge resolving conflict between eacc9c8240fe and d2f173e25686"&&
@@ -244,10 +275,17 @@
   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
   $ glog
   @  21:f344982e63c4@default(draft) bk:[] More addition
@@ -300,18 +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	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-touch.t	Tue Jun 23 16:47:24 2015 -0700
@@ -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	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-tutorial.t	Tue Jun 23 16:47:24 2015 -0700
@@ -92,7 +92,7 @@
 Its first version is shared with the outside.
 
   $ hg push remote
-  pushing to $TESTTMP/remote
+  pushing to $TESTTMP/remote (glob)
   searching for changes
   adding changesets
   adding manifests
@@ -218,12 +218,13 @@
 I'll get this remote changeset when pulling
 
   $ hg pull remote
-  pulling from $TESTTMP/remote
+  pulling from $TESTTMP/remote (glob)
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
+  pull obsolescence markers
   (run 'hg heads' to see heads, 'hg merge' to merge)
 
 I now have a new heads. Note that this remote head is immutable
@@ -242,7 +243,9 @@
 
   $ hg diff
   $ hg rebase --dest 9ca060c80d74 --source 4d5dc8187023
+  rebasing 1:4d5dc8187023 "adding condiment"
   merging shopping
+  rebasing 4:9d0363b81950 "adding fruit"
   merging shopping
 
 
@@ -347,6 +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
@@ -396,16 +400,19 @@
 we can now push our change:
 
   $ hg push remote
-  pushing to $TESTTMP/remote
+  pushing to $TESTTMP/remote (glob)
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 3 changes to 1 files
+  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 .
@@ -444,17 +451,20 @@
       The --include option specifies patterns to uncommit. The --exclude option
       specifies patterns to keep in the commit.
   
+      The --rev argument let you change the commit file to a content of another
+      revision. It still does not change the content of your file in the working
+      directory.
+  
       Return 0 if changed files are uncommitted.
   
-  options:
+  options ([+] can be repeated):
   
    -a --all                 uncommit all changes when no arguments given
+   -r --rev VALUE           revert commit content to REV instead
    -I --include PATTERN [+] include names matching the given patterns
    -X --exclude PATTERN [+] exclude names matching the given patterns
   
-  [+] marked option can be specified multiple times
-  
-  use "hg -v help uncommit" to show the global options
+  (some details hidden, use --verbose to show complete help)
 
 
 The edit command of histedit can be used to split changeset:
@@ -466,29 +476,30 @@
 The tutorial part is not written yet but can use `hg fold`:
 
   $ hg help fold
-  hg fold rev
+  hg fold [OPTION]... [-r] REV
   
   aliases: squash
   
-  Fold multiple revisions into a single one
+  fold multiple revisions into a single one
   
-      The revisions from your current working directory to the given one are
-      folded into a single successor revision.
+      Folds a set of revisions with the parent of the working directory. All
+      revisions linearly between the given revisions and the parent of the
+      working directory will also be folded.
   
-      you can alternatively use --rev to explicitly specify revisions to be
-      folded, ignoring the current working directory parent.
+      Use --exact for folding only the specified revisions while ignoring the
+      parent of the working directory. In this case, the given revisions must
+      form a linear unbroken chain.
   
-  options:
+  options ([+] can be repeated):
   
-   -r --rev VALUE [+] explicitly specify the full set of revision to fold
+   -r --rev VALUE [+] revision to fold
+      --exact         only fold specified revisions
    -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
   
-  [+] marked option can be specified multiple times
-  
-  use "hg -v help fold" to show the global options
+  (some details hidden, use --verbose to show complete help)
 
 
 -----------------------
@@ -505,17 +516,20 @@
 
   $ cd ../remote
   $ hg -R ../local/ showconfig phases
+  [1]
 
 the localrepo does not have any specific configuration for `phases.publish`. It
 is ``true`` by default.
 
   $ hg pull local
-  pulling from $TESTTMP/local
+  pulling from $TESTTMP/local (glob)
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
+  pull obsolescence markers
+  1 obsolescence markers added
   (run 'hg update' to get a working copy)
   $ hg log -G
   o  75954b8cd933 (public): bathroom stuff
@@ -566,12 +580,14 @@
 I can now exchange mutable changeset between "remote" and "local" repository.
 
   $ hg pull local
-  pulling from $TESTTMP/local
+  pulling from $TESTTMP/local (glob)
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
+  pull obsolescence markers
+  1 obsolescence markers added
   (run 'hg update' to get a working copy)
   $ hg log -G
   o  75954b8cd933 (draft): bathroom stuff
@@ -625,12 +641,14 @@
 When we pull from remote again we get an unstable state!
 
   $ hg pull remote
-  pulling from $TESTTMP/remote
+  pulling from $TESTTMP/remote (glob)
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
+  pull obsolescence markers
+  0 obsolescence markers added
   (run 'hg heads' to see heads, 'hg merge' to merge)
   1 new unstable changesets
 
@@ -665,7 +683,7 @@
 share it with the outside:
 
   $ hg push other
-  pushing to $TESTTMP/other
+  pushing to $TESTTMP/other (glob)
   searching for changes
   abort: push includes unstable changeset: bf1b0d202029!
   (use 'hg evolve' to get a stable history or --force to ignore warnings)
@@ -690,6 +708,7 @@
   move:[15] animals
   atop:[14] bathroom stuff
   merging shopping
+  working directory is now at ee942144f952
 
 The old version of bathroom is hidden again.
 
@@ -713,20 +732,24 @@
 We can push this evolution to remote
 
   $ hg push remote
-  pushing to $TESTTMP/remote
+  pushing to $TESTTMP/remote (glob)
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 1 files (+1 heads)
+  pushing 10 obsolescence markers (* bytes) (glob)
+  3 obsolescence markers added
 
 remote get a warning that current working directory is based on an obsolete changeset
 
   $ cd ../remote
   $ hg pull local # we up again to trigger the warning. it was displayed during the push
-  pulling from $TESTTMP/local
+  pulling from $TESTTMP/local (glob)
   searching for changes
   no changes found
+  pull obsolescence markers
+  0 obsolescence markers added
   working directory parent is obsolete!
 
 now let's see where we are, and update to the successor
@@ -737,6 +760,7 @@
   $ hg evolve
   update:[8] animals
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  working directory is now at ee942144f952
 
 Relocating unstable change after prune
 ----------------------------------------------
@@ -750,12 +774,14 @@
 
   $ cd ../local
   $ hg pull remote
-  pulling from $TESTTMP/remote
+  pulling from $TESTTMP/remote (glob)
   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
   (run 'hg update' to get a working copy)
   $ hg log -G
   o  99f039c5ec9e (draft): SPAM SPAM SPAM
@@ -812,6 +838,7 @@
   move:[17] SPAM SPAM SPAM
   atop:[14] bathroom stuff
   merging shopping
+  working directory is now at 40aa40daeefb
 
   $ hg log -G
   @  40aa40daeefb (draft): SPAM SPAM SPAM
--- a/tests/test-uncommit.t	Tue Jun 23 16:45:55 2015 -0700
+++ b/tests/test-uncommit.t	Tue Jun 23 16:47:24 2015 -0700
@@ -1,6 +1,5 @@
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
-  > hgext.rebase=
   > hgext.graphlog=
   > EOF
   $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
@@ -152,6 +151,7 @@
 
   $ hg uncommit
   abort: nothing to uncommit
+  (use --all to uncommit all files)
   [255]
   $ hg bookmarks
    * touncommit-bm             3:5eb72dbe0cb4
@@ -162,6 +162,7 @@
 
   $ hg uncommit --include nothere
   abort: nothing to uncommit
+  (use --all to uncommit all files)
   [255]
 
 Enjoy uncommit
@@ -232,12 +233,13 @@
      touncommit-bm-inactive    4:e8db4aa611f6
      unrelated                 2:f63b90038565
   $ hg debugobsolete
-  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 e8db4aa611f6d5706374288e6898e498f5c44098 0 {'date': '* *', 'user': 'test'} (glob)
+  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 e8db4aa611f6d5706374288e6898e498f5c44098 0 (*) {'user': 'test'} (glob)
 
 Test phase is preserved, no local changes
 
   $ hg up -C 3 --hidden
   8 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  (leaving bookmark touncommit-bm)
   working directory parent is obsolete!
   $ hg --config extensions.purge= purge
   $ hg uncommit -I 'set:added() and e'
@@ -275,8 +277,8 @@
   o  0:07f494440405@default(stable/draft) adda
   
   $ hg debugobsolete
-  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 e8db4aa611f6d5706374288e6898e498f5c44098 0 {'date': '* *', 'user': 'test'} (glob)
-  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 c706fe2c12f83ba5010cb60ea6af3bd1f0c2d6d3 0 {'date': '* *', 'user': 'test'} (glob)
+  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 e8db4aa611f6d5706374288e6898e498f5c44098 0 (*) {'user': 'test'} (glob)
+  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 c706fe2c12f83ba5010cb60ea6af3bd1f0c2d6d3 0 (*) {'user': 'test'} (glob)
 
 Test --all
 
@@ -308,9 +310,9 @@
   A e
 
   $ hg debugobsolete
-  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 e8db4aa611f6d5706374288e6898e498f5c44098 0 {'date': '* *', 'user': 'test'} (glob)
-  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 c706fe2c12f83ba5010cb60ea6af3bd1f0c2d6d3 0 {'date': '* *', 'user': 'test'} (glob)
-  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 c4cbebac3751269bdf12d1466deabcc78521d272 0 {'date': '* *', 'user': 'test'} (glob)
+  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 e8db4aa611f6d5706374288e6898e498f5c44098 0 (*) {'user': 'test'} (glob)
+  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 c706fe2c12f83ba5010cb60ea6af3bd1f0c2d6d3 0 (*) {'user': 'test'} (glob)
+  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 c4cbebac3751269bdf12d1466deabcc78521d272 0 (*) {'user': 'test'} (glob)
 
 Display a warning if nothing left
 
@@ -318,10 +320,10 @@
   new changeset is empty
   (use "hg prune ." to remove it)
   $ hg debugobsolete
-  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 e8db4aa611f6d5706374288e6898e498f5c44098 0 {'date': '* *', 'user': 'test'} (glob)
-  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 c706fe2c12f83ba5010cb60ea6af3bd1f0c2d6d3 0 {'date': '* *', 'user': 'test'} (glob)
-  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 c4cbebac3751269bdf12d1466deabcc78521d272 0 {'date': '* *', 'user': 'test'} (glob)
-  c4cbebac3751269bdf12d1466deabcc78521d272 4f1c269eab68720f54e88ce3c1dc02b2858b6b89 0 {'date': '* *', 'user': 'test'} (glob)
+  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 e8db4aa611f6d5706374288e6898e498f5c44098 0 (*) {'user': 'test'} (glob)
+  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 c706fe2c12f83ba5010cb60ea6af3bd1f0c2d6d3 0 (*) {'user': 'test'} (glob)
+  5eb72dbe0cb409d094e3b4ae8eaa30071c1b8730 c4cbebac3751269bdf12d1466deabcc78521d272 0 (*) {'user': 'test'} (glob)
+  c4cbebac3751269bdf12d1466deabcc78521d272 4f1c269eab68720f54e88ce3c1dc02b2858b6b89 0 (*) {'user': 'test'} (glob)
 
 Test instability warning
 
@@ -333,3 +335,28 @@
   [8] touncommit
   $ hg uncommit aa
   1 new unstable changesets
+
+Test uncommiting agains a different base
+
+  $ hg cat b --rev .
+  b
+  b
+  $ hg cat b --rev .^
+  b
+  $ 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
+  [1]
+
+Test uncommiting precursors
+
+  $ hg uncommit --hidden --rev 'precursors(.)' b
+  $ hg cat b --rev .
+  b
+  b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-userguide.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,319 @@
+ensure that all the scenarios in the user guide work as documented
+
+basic repo
+  $ hg init t
+  $ cd t
+  $ touch file1.c file2.c
+  $ hg -q commit -A -m init
+
+example 1: commit creates a changeset in draft phase
+(this is nothing to do with evolve, but it's mentioned in the user guide)
+  $ echo 'feature Y' >> file1.c
+  $ hg commit -u alice -d '0 0' -m 'implement feature X'
+  $ hg phase -r .
+  1: draft
+  $ hg identify -in
+  6e725fd2be6f 1
+
+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-42cc74d4-amend-backup.hg (glob)
+  $ hg log -r 23fe4ac6d3f1
+  abort: unknown revision '23fe4ac6d3f1'!
+  [255]
+  $ hg identify -in
+  fe0ecd3bd2a4 1
+
+enable evolve for safe history modification
+  $ cat >> $HGRCPATH <<EOF
+  > [alias]
+  > shortlog = log --template '{rev}:{node|short}  {phase}  {desc|firstline}\n'
+  > [extensions]
+  > rebase =
+  > EOF
+  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
+
+example 3: safe amend with "hg commit --amend" (figure 2)
+  $ echo 'tweak feature Y' >> file1.c
+  $ hg commit --amend -u alice -d '2 0' -m 'implement feature Y'
+  $ hg shortlog -q -r fe0ecd3bd2a4
+  abort: hidden revision 'fe0ecd3bd2a4'!
+  (use --hidden to access hidden revisions)
+  [255]
+  $ hg --hidden shortlog -G
+  @  3:934359450037  draft  implement feature Y
+  |
+  | x  2:6c5f78d5d467  draft  temporary amend commit for fe0ecd3bd2a4
+  | |
+  | x  1:fe0ecd3bd2a4  draft  implement feature Y
+  |/
+  o  0:08c4b6f4efc8  draft  init
+  
+example 3 redux: repeat safe amend, this time with "hg amend"
+  $ hg rollback -q
+  $ hg amend -u alice -d '2 0' -m 'implement feature Y'
+  $ hg --hidden shortlog -G
+  @  3:934359450037  draft  implement feature Y
+  |
+  | x  2:6c5f78d5d467  draft  temporary amend commit for fe0ecd3bd2a4
+  | |
+  | x  1:fe0ecd3bd2a4  draft  implement feature Y
+  |/
+  o  0:08c4b6f4efc8  draft  init
+  
+example 4: prune at head (figure 3)
+  $ echo 'debug hack' >> file1.c
+  $ hg commit -m 'debug hack'
+  $ hg prune .
+  1 changesets pruned
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  working directory now at 934359450037
+  $ hg parents --template '{rev}:{node|short}  {desc|firstline}\n'
+  3:934359450037  implement feature Y
+  $ hg --hidden shortlog -G -r 3:
+  x  4:a3e0ef24aaf0  draft  debug hack
+  |
+  @  3:934359450037  draft  implement feature Y
+  |
+
+example 5: uncommit files at head (figure 4)
+  $ echo 'relevant' >> file1.c
+  $ echo 'irrelevant' >> file2.c
+  $ hg commit -u dan -d '10 0' -m 'fix bug 234'
+  $ hg uncommit file2.c
+  $ hg status
+  M file2.c
+  $ hg --hidden shortlog -G -r 'descendants(3) - 4'
+  @  6:c8defeecf7a4  draft  fix bug 234
+  |
+  | x  5:da4331967f5f  draft  fix bug 234
+  |/
+  o  3:934359450037  draft  implement feature Y
+  |
+  $ hg parents --template '{rev}:{node|short}  {desc|firstline}\n{files}\n'
+  6:c8defeecf7a4  fix bug 234
+  file1.c
+  $ hg revert --no-backup file2.c
+
+example 6: fold multiple changesets together into one (figure 5)
+  $ echo step1 >> file1.c
+  $ hg commit -m 'step 1'
+  $ echo step2 >> file1.c
+  $ hg commit -m 'step 2'
+  $ echo step3 >> file2.c
+  $ hg commit -m 'step 3'
+  $ hg log --template '{rev}:{node|short}  {desc|firstline}\n' -r 7::
+  7:05e61aab8294  step 1
+  8:be6d5bc8e4cc  step 2
+  9:35f432d9f7c1  step 3
+  $ hg fold -d '0 0' -m 'fix bug 64' -r 7::
+  3 changesets folded
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg --hidden shortlog -G -r 6::
+  @  10:171c6a79a27b  draft  fix bug 64
+  |
+  | x  9:35f432d9f7c1  draft  step 3
+  | |
+  | x  8:be6d5bc8e4cc  draft  step 2
+  | |
+  | x  7:05e61aab8294  draft  step 1
+  |/
+  o  6:c8defeecf7a4  draft  fix bug 234
+  |
+  $ hg --hidden log -q -r 'successors(7) | successors(8) | successors(9)'
+  10:171c6a79a27b
+  $ hg --hidden log -q -r 'precursors(10)'
+  7:05e61aab8294
+  8:be6d5bc8e4cc
+  9:35f432d9f7c1
+  $ hg diff -c 10 -U 0
+  diff -r c8defeecf7a4 -r 171c6a79a27b file1.c
+  --- a/file1.c	Thu Jan 01 00:00:10 1970 +0000
+  +++ b/file1.c	Thu Jan 01 00:00:00 1970 +0000
+  @@ -3,0 +4,2 @@
+  +step1
+  +step2
+  diff -r c8defeecf7a4 -r 171c6a79a27b file2.c
+  --- a/file2.c	Thu Jan 01 00:00:10 1970 +0000
+  +++ b/file2.c	Thu Jan 01 00:00:00 1970 +0000
+  @@ -0,0 +1,1 @@
+  +step3
+
+setup for example 7: amend an older changeset
+  $ echo 'fix fix oops fix' > file2.c
+  $ hg commit -u bob -d '3 0' -m 'fix bug 17'
+  $ echo 'cleanup' >> file1.c
+  $ hg commit -u bob -d '4 0' -m 'cleanup'
+  $ echo 'new feature' >> file1.c
+  $ hg commit -u bob -d '5 0' -m 'feature 23'
+  $ hg --hidden shortlog -G -r 10::
+  @  13:dadcbba2d606  draft  feature 23
+  |
+  o  12:debd46bb29dc  draft  cleanup
+  |
+  o  11:3e1cb8f70c02  draft  fix bug 17
+  |
+  o  10:171c6a79a27b  draft  fix bug 64
+  |
+
+example 7: amend an older changeset (figures 6, 7)
+  $ hg update -q 11
+  $ echo 'fix fix fix fix' > file2.c
+  $ hg amend -u bob -d '6 0'
+  2 new unstable changesets
+  $ hg shortlog -r 'obsolete()'
+  11:3e1cb8f70c02  draft  fix bug 17
+  $ hg shortlog -r 'unstable()'
+  12:debd46bb29dc  draft  cleanup
+  13:dadcbba2d606  draft  feature 23
+  $ hg --hidden shortlog -G -r 10::
+  @  15:395cbeda3a06  draft  fix bug 17
+  |
+  | x  14:f7fab707e247  draft  temporary amend commit for 3e1cb8f70c02
+  | |
+  | | o  13:dadcbba2d606  draft  feature 23
+  | | |
+  | | o  12:debd46bb29dc  draft  cleanup
+  | |/
+  | x  11:3e1cb8f70c02  draft  fix bug 17
+  |/
+  o  10:171c6a79a27b  draft  fix bug 64
+  |
+  $ hg evolve -q --all
+  $ hg shortlog -G -r 10::
+  @  17:91b4b0f8b5c5  draft  feature 23
+  |
+  o  16:fe8858bd9bc2  draft  cleanup
+  |
+  o  15:395cbeda3a06  draft  fix bug 17
+  |
+  o  10:171c6a79a27b  draft  fix bug 64
+  |
+
+setup for example 8: prune an older changeset (figure 8)
+  $ echo 'useful' >> file1.c
+  $ hg commit -u carl -d '7 0' -m 'useful work'
+  $ echo 'debug' >> file2.c
+  $ hg commit -u carl -d '8 0' -m 'debug hack'
+  $ echo 'more useful' >> file1.c
+  $ hg commit -u carl -d '9 0' -m 'more work'
+  $ hg shortlog -G -r 17::
+  @  20:ea8fafca914b  draft  more work
+  |
+  o  19:b23d06b457a8  draft  debug hack
+  |
+  o  18:1f33e68b18b9  draft  useful work
+  |
+  o  17:91b4b0f8b5c5  draft  feature 23
+  |
+
+example 8: prune an older changeset (figures 8, 9)
+  $ hg prune 19
+  1 changesets pruned
+  1 new unstable changesets
+  $ hg --hidden shortlog -G -r 18::
+  @  20:ea8fafca914b  draft  more work
+  |
+  x  19:b23d06b457a8  draft  debug hack
+  |
+  o  18:1f33e68b18b9  draft  useful work
+  |
+  $ hg evolve -q --all
+  $ hg --hidden shortlog -G -r 18::
+  @  21:4393e5877437  draft  more work
+  |
+  | x  20:ea8fafca914b  draft  more work
+  | |
+  | x  19:b23d06b457a8  draft  debug hack
+  |/
+  o  18:1f33e68b18b9  draft  useful work
+  |
+
+example 9: uncommit files from an older changeset (discard changes)
+(figure 10)
+  $ echo 'this fixes bug 53' >> file1.c
+  $ echo 'debug hack' >> file2.c
+  $ hg commit -u dan -d '11 0' -m 'fix bug 53'
+  $ echo 'and this handles bug 67' >> file1.c
+  $ hg commit -u dan -d '12 0' -m 'fix bug 67'
+  $ hg update 22
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg shortlog -G -r 21::
+  o  23:4db2428c8ae3  draft  fix bug 67
+  |
+  @  22:f84357446753  draft  fix bug 53
+  |
+  o  21:4393e5877437  draft  more work
+  |
+  $ hg uncommit file2.c
+  1 new unstable changesets
+  $ hg status
+  M file2.c
+  $ hg revert file2.c
+  $ hg evolve --all
+  move:[23] fix bug 67
+  atop:[24] fix bug 53
+  working directory is now at 0d972d6888e6
+  $ hg --hidden shortlog -G -r 21::
+  @  25:0d972d6888e6  draft  fix bug 67
+  |
+  o  24:71bb83d674c5  draft  fix bug 53
+  |
+  | x  23:4db2428c8ae3  draft  fix bug 67
+  | |
+  | x  22:f84357446753  draft  fix bug 53
+  |/
+  o  21:4393e5877437  draft  more work
+  |
+  $ rm file2.c.orig
+
+example 10: uncommit files from an older changeset (keep changes)
+(figures 11, 12)
+  $ echo 'fix a bug' >> file1.c
+  $ echo 'useful but unrelated' >> file2.c
+  $ hg commit -u dan -d '11 0' -m 'fix a bug'
+  $ echo 'new feature' >> file1.c
+  $ hg commit -u dan -d '12 0' -m 'new feature'
+  $ hg update 26
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg --hidden shortlog -G -r 25::
+  o  27:fbb3c6d50427  draft  new feature
+  |
+  @  26:5b31a1239ab9  draft  fix a bug
+  |
+  o  25:0d972d6888e6  draft  fix bug 67
+  |
+  $ hg uncommit file2.c
+  1 new unstable changesets
+  $ hg status
+  M file2.c
+  $ hg commit -m 'useful tweak'
+  $ hg --hidden shortlog -G -r 25::
+  @  29:51e0d8c0a922  draft  useful tweak
+  |
+  o  28:2594e98553a9  draft  fix a bug
+  |
+  | o  27:fbb3c6d50427  draft  new feature
+  | |
+  | x  26:5b31a1239ab9  draft  fix a bug
+  |/
+  o  25:0d972d6888e6  draft  fix bug 67
+  |
+  $ hg evolve --all
+  move:[27] new feature
+  atop:[28] fix a bug
+  working directory is now at 166c1c368ab6
+  $ hg --hidden shortlog -G -r 25::
+  @  30:166c1c368ab6  draft  new feature
+  |
+  | o  29:51e0d8c0a922  draft  useful tweak
+  |/
+  o  28:2594e98553a9  draft  fix a bug
+  |
+  | x  27:fbb3c6d50427  draft  new feature
+  | |
+  | x  26:5b31a1239ab9  draft  fix a bug
+  |/
+  o  25:0d972d6888e6  draft  fix bug 67
+  |
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-wireproto-bundle1.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,100 @@
+
+  $ cat >> $HGRCPATH <<EOF
+  > [defaults]
+  > amend=-d "0 0"
+  > [ui]
+  > ssh=python "$TESTDIR/dummyssh"
+  > [phases]
+  > publish = False
+  > [extensions]
+  > EOF
+  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
+
+  $ mkcommit() {
+  >    echo "$1" > "$1"
+  >    hg add "$1"
+  >    hg ci -m "add $1"
+  > }
+
+setup repo
+
+  $ hg init server
+
+  $ hg clone ssh://user@dummy/server client
+  no changes found
+  updating to branch default
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ cp -r client other
+
+Smoke testing
+===============
+
+  $ cd client
+  $ mkcommit 0
+  $ mkcommit a
+  $ hg push
+  pushing to ssh://user@dummy/server
+  searching for changes
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
+  $ hg pull
+  pulling from ssh://user@dummy/server
+  searching for changes
+  no changes found
+  $ hg pull -R ../other
+  pulling from ssh://user@dummy/server
+  requesting all changes
+  adding changesets
+  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
+  searching for changes
+  no changes found
+  [1]
+
+Push
+=============
+
+  $ echo 'A' > a
+  $ 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 (+1 heads)
+  pushing 2 obsolescence markers (* bytes) (glob)
+  remote: 2 obsolescence markers added
+  $ hg push
+  pushing to ssh://user@dummy/server
+  searching for changes
+  no changes found
+  [1]
+
+Pull
+=============
+
+  $ 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 [12] files \(\+1 heads\) (re)
+  pull obsolescence markers
+  2 obsolescence markers added
+  (run 'hg heads' to see heads)
+  $ hg -R ../other pull
+  pulling from ssh://user@dummy/server
+  searching for changes
+  no changes found
+
+  $ cd ..
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-wireproto.t	Tue Jun 23 16:47:24 2015 -0700
@@ -0,0 +1,152 @@
+
+  $ 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]
+  > EOF
+  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
+
+  $ mkcommit() {
+  >    echo "$1" > "$1"
+  >    hg add "$1"
+  >    hg ci -m "add $1"
+  > }
+
+setup repo
+
+  $ hg init server
+
+  $ hg clone ssh://user@dummy/server client
+  no changes found
+  updating to branch default
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ cp -r client other
+
+Smoke testing
+===============
+
+  $ cd client
+  $ mkcommit 0
+  $ mkcommit a
+  $ hg push
+  pushing to ssh://user@dummy/server
+  searching for changes
+  remote: adding changesets
+  remote: adding manifests
+  remote: adding file changes
+  remote: added 2 changesets with 2 changes to 2 files
+  $ hg pull
+  pulling from ssh://user@dummy/server
+  searching for changes
+  no changes found
+  $ hg pull -R ../other
+  pulling from ssh://user@dummy/server
+  requesting all changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 2 changesets with 2 changes to 2 files
+  (run 'hg update' to get a working copy)
+  $ hg push -R ../other
+  pushing to ssh://user@dummy/server
+  searching for changes
+  no changes found
+  [1]
+
+Push
+=============
+
+  $ echo 'A' > a
+  $ 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 (+1 heads)
+  remote: obsmarker-exchange: 139 bytes received
+  remote: 2 new obsolescence markers
+  $ hg push
+  pushing to ssh://user@dummy/server
+  searching for changes
+  no changes found
+  [1]
+
+Pull
+=============
+
+  $ 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 [12] files \(\+1 heads\) (re)
+  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 ..