evolvecmd: _possibledestination() skip visiting empty parent I see that even in the case when "parent == -1" we are visiting that also and find succsets for that and in last -1 is being added in the set of possible destination. Why not skip that?

pick: `hg help` was not showing the full cmd desc of `pick` after running command `hg help` it was not including the second line of command description. I guess it picks the firstline only. So I moved that part in first line of cmd description.

test-compat: merge mercurial-4.4 into mercurial-4.3

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge mercurial-4.7 into mercurial-4.6

test-compat: merge stable into mercurial-4.7

compat: fix fixedcopytracing compatibility with mercurial 4.8 and narrow Mercurial 4.8 version of _fullcopytracing includes some new narrow code. As https://phab.mercurial-scm.org/D3896 has not yet landed, update fixedcopytracing behind a version detection condition. This was spotted by Augie Fackler.

utility: don't translate commit messages in revselection prompt (issue6016) Commit messages should not be translated and should be shown the same. I am not sure if I can add a test for this by creating a commit with non-ascii character in commit message.

evolve: use stack template in --continue case also We use stack indexes (s#) in evolve msging when revs being evolved are in active topic. Before this patch we are not covering the --continue case. So this patch cover the same and use the stack indexes s# even when we continue an interrupted evolve. In this patch I used the same concept (to check if we should use s#) as we are using in cases other than `--continue`. Thanks to PYD for refactoring those lines. Changes in tests also reflects the expected behaviour.

evolve: add test showing currently stackalias fails in --continue case

branching; merge with stable

packaging: mark version as devel version This avoid confusion from people installing from source.

Added tag 8.3.1 for changeset b90422a11a88

packaging: prepare version 8.3.1

test-compat: merge mercurial-4.4 into mercurial-4.3

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge mercurial-4.7 into mercurial-4.6

test-compat: merge stable into mercurial-4.7

evolve: do not try to display stack index of changeset who do not have one

evolve: check if we should use stack template for each item in the stack We should probably just track the current topic and move all the logic in the template itself. However, this is a good first step.

branching: merge stable back into default

test-compat: merge mercurial-4.4 into mercurial-4.3

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge mercurial-4.7 into mercurial-4.6

test-compat: merge stable into mercurial-4.7

branching: revert test outptu change for 4.7

pullbundle: drop erroneous flagging of the command as basic This is a debug command, not a basic part of the UI.

test-compat: backed out changeset ba1e83c841f2 Preparing the branch for 4.8.

test-compat: backed out changeset b0084d599112 Preparing the branch for 4.8.

test-compat: backed out changeset e2d083cc447e Preparing the branch for 4.8.

test-compat: backed out changeset ccbfbeee6cf3 Preparing the branch for 4.8.

test-compat: backed out changeset 7091f7215651 Preparing the branch for 4.8.

test-compat: backed out changeset 8eec9422bd8e Preparing the branch for 4.8.

branching: merge stable into default

branching: start test compatibility branch for Mercurial 4.7 Mercurial 4.8-rc0 have been released

topic: add the changelog argument to branchinfo() 47c03042cd1d in core added a changelog argument to revbranchcache.branchinfo() and we wrap that function in topic extension. So let's add this optional argument in topic extension too.

evolve: adapt for changed @command decorator Core changed the hacky "^command" syntax to be a proper decorator option in fa88170c10bb (help: adding a proper declaration for shortlist/basic commands (API), 2018-10-12). This patch makes evolve compatible with that.

topicidx: stop assigning index number to obsolete changesets Obsolete changeset are no longer part of the stack, the old logic tried to assigns them the index of their successors but this is flacky and error prone. So we stop doing so.

stack-index: add some test featuring content diversion This will be useful to display various issues.

pullbundle: drop erroneous flagging of the command as basic This is a debug command, not a basic part of the UI.

topic: add the changelog argument to branchinfo() 47c03042cd1d in core added a changelog argument to revbranchcache.branchinfo() and we wrap that function in topic extension. So let's add this optional argument in topic extension too.

topics: "prairie" is a not an animal (AFAIK, anyway)

tests: remove a"| head -n 2" that just hides an error code The output from core used to be longer and it made sense, but no longer does. CORE-TEST-OUTPUT-UPDATE: 5199c5b6fd29

evolve: adapt for changed @command decorator Core changed the hacky "^command" syntax to be a proper decorator option in fa88170c10bb (help: adding a proper declaration for shortlist/basic commands (API), 2018-10-12). This patch makes evolve compatible with that.

commands: adjust metavariables as appropriate Apart from looking better in hg help command, these strings are also helpful when generating shell completions programmatically.

branching: merge with default

branching: preserve the expected output on default

evolvecmd: use modern vocabulary in help text for evolve

evolvecmd: mark flags with old instability names as deprecated

packaging: mark as development version

Added tag 8.3.0 for changeset 45d4b49d81d9

packaging: prepare release 8.3.0

pullbundle: document working version and update changelog to mention it

test-compat: merge mercurial-4.4 into mercurial-4.3

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge stable into mercurial-4.6

topic: fix '{topicidx}' keyword registration for mercurial <= 4.5

branching: prepare release 8.3.0

test: other harmless output change These are new test that need adjustment for 4.7 output.

changelog: mention the fix of cache warming on hg strip

test: backed out output changes from changeset 6f391c2a773b

test: backed out test output changes from changeset ef22eef37ecc

test: backed out output changes from changeset 0171a7ceb574

test: backed out output changes from changeset dfa69b5ece87

test: backed out output changes from changeset 01ad46551d7c

prev: also use stack shortcut in output when possible This mirror what `hg evolve` is doing since cc3a0b13ae57.

next: also use stack shortcut in output when possible This mirror what `hg evolve` is doing since cc3a0b13ae57.

branching: merge stable into default

rewind: alias the command to undo This is a step in unifiying rewind and undo and not talk about them as different commands or concepts. If there exists rewind command, that should be an alias of undo and the vice versa. The exact implmentation detail and how the command works etc. is a different thing but there should be just one command.

changelog: add a line about the usage of s# in evolve

caches: no longer warm the cache on strip in "auto" mode Before this patch, a strip would trigger a full and blind cache load that would include the stablerange cache. In repository like Mozilla this was a bit painful. The default "auto" mode now behave has intended.

evolve: use stack alias s# in `hg evolve` msgs As repository grows revision number lose their usefulness. To make it a little better than now, after this patch we will be using short stack aliases introduced by the topic extension (as displayed by `hg stack`). These stack aliases s# will be used only when user has enabled topic extension and his repo's current active topic is same as the revs to be evolved. For now, this patch doesn't cover `continue` case. I will discuss about this with Pierre-Yves David. Maybe we have to store the info in evolvestate that "we were using stack aliases".

evolve: extract displayer to _solveone() I extracted this displayer method to _solveone() so that it would be easy to pass a different template to show evolve msgs. In upcoming patches we will be using stacktemplate in some cases where we want to include stack alias s# in evolve msgs.

utility: add a template alias that will be used in evolve msgs This template use stack alias s# instead of rev number in messages printed when we run `hg evolve`. For example, this template's msgs will look like this: move:[s3] add aaa atop:[s2] add bbb move:[s4] add ccc I will be using this template in upcoming patches.

topic: add topicidx template keyword This keyword will be useful where we want to see the index of the changeset in the stack when we run `hg stack`.

changelog: fix version number

tests: update the test-topic.t with changes in core mercurial Yuya stabilized the -T option and now it's in help by default. CORE-TEST-OUTPUT-UPDATE: 0d703063d0c8

pullbundle: fix style warning

pullbundle: improves management of multiple branch while dealing with a head There were still case where a range was issued too early.

pullbundle: deal with head in a predicable order We use node order to make this repeatable from one clone to another. This is an arbitrary pick.

pullbundle: deal with another special case introduced by arbitrary ranges previous, we dealt with the case where the tippest subrange of the stable parent was too long. Now, we need to deal with the case where it is too small.

pullbundle: compat with Mercurial 4.7

pullbundle: add some information on the cached change This also adds a way to skip "caching" smaller range in the debugcommand (not in the extensions itself).

pullbundle: add data about the cached bundle size and hit

pullbundle: add a command to generate cache hit statistic This new command should help checking that the stable range produce reusable bundle.

pullbundle: point out the output flooding issue from core Right now, we don't have a reliable progress report when using pullbundle.

pullbundle: issue local branches in the right order

pullbundle: delay cache file opening Otherwise we can end-up with a too many file open at the same time.

pullbundle: improve slicing of the lower part of range The previous method could get confuse by merge and overslice. The new method is better at using sticking on power of two boundaries.

stablerange: fix slicing of arbitrary ranges Pull bundle trigger slicing from range with arbitrary initial skip. We have to adjust the current slicing to take this into account.

pullbundle: attempt to save stablerange cache after each computation Since we do not serve the full repository, we use more stablerange starting from a random point. These are probably not loaded yet and should be cached. This is best effort caching, if we can't save them we won't.

pullbundle: add basic extension metadata

pullbundle: add a config option for the cache directory

pullbundle: add an output about the time spent slicing the set This will be useful to monitor overall performance.

pullbundle: add extension documentation

pullbundle: add an extra test showing how cache are reusable We issue a single final pull, most of its item are reusable.

pullbundle: add caching logic We now only generate a bundle once (and store it to disk). If we need it again, we use it directly from disk.

pullbundle: slice pull into multiple ranges We subdivide the set of missing revisions into multiple "range" using the "stable range" data structure. This slicing aims at maximizing the capability of the resulting ranges.

pullbundle: initial commit Right now, we do not do any slicing, but we install the wrapping and the tests.

test: update output to make streamv2 capabilities CORE-TEST-OUTPUT-UPDATE: 4bd6e444c76f

branching: merge with stable

topic: respect preexisting 'topic' value on workingcommitctx Mercurial's core changeset: 6c8ceebce309 revealed an issue. If the creator of a workingcommitctx explicitly assigned a 'topic', it was silently overridden by the current active on. This break import of patch with topic information. We now respect preexisting topic information.

topic: add a compatibility to access transaction's names The attribute was made private in 4024c363cd33.

topic: add a compatibility to access transaction's validator The attribute was made private in ebbba3ba3f66.

evovle: remove redundancy in evolve output Copying the discription of this redundancy issue given by Pierre Yves David: When running `hg evolve` to stabilize orphan changeset output about the currently stabilized changeset is issued. For example: $ hg evolve move:[3] a3 atop:[4] a2 working directory is now at 7c5649f73d11 This output can become quite repetitive when orphan are stabilized atop each other. For example: $ hg evolve --all move:[8] dansk 2! atop:[10] dansk! merging main-file-1 move:[9] dansk 3! atop:[11] dansk 2! In this case it would be smoother to issue: $ hg evolve --all move:[8] dansk 2! atop:[10] dansk! merging main-file-1 move:[9] dansk 3! Since we are moving "dansk 3!" atop the changeset we just stabilized. When adding this be careful that we still want to issue the "atop" message in various cases: 1. first changesets in a stack 2. when the orphan is not stabilized atop previous one 3. when using hg evolve --continue to resume an evolution So, I have made the changes which also respect above listed three points. And changes in tests/test-evovle*.t reflecting the changed behavior.

amend: handle crash before transaction initialization with --patch The `tr` object can be None.

branching: merge with stable

obsdiscovery: adopt to calling convention change Upstream commits 71d83b315778 and abce899c985f changed the calling convention of setdiscovery._takefullsample(). We inspect the signature of the function before calling it so we can pass the proper arguments.

branching: merge stable into default

packaging: mark as development version This avoid confusion when people install version from source.

Added tag 8.2.1 for changeset c6362c4abd69

packagin: prepare release 8.2.1

test-compat: merge mercurial-4.4 into mercurial-4.3

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge stable into mercurial-4.6

branching: merge stable into default

caches: issue both debug and blackbox log message This increase the odd someone looking for issue will find them.

cmdrewrite: rename variable and move it closer to where it is used Renaming to satisfy pep8-naming linter plugin, which complained on this variable because all-uppercase names are reserved for constants, and constants need to be module-level. This variable is not a good choice for moving up to the module level because it's used only in one place. Additionally, let's have it closer to the place it's actually used to potentially avoid an extra call to _() function (however cheap it may be).

changelog: mention the cache improvements

obshashrangecache: be more paranoid in the errors we catch It seems like there error were already covered. Better safe than sorry.

stablerangecache: be more paranoid in the errors we catch It seems like there error were already covered. Better safe than sorry.

stablesortcache: update the variable tracking on-disk state after write Since we updated the on disk content, we should update that value. In practice the object will likely be discarded after the write, but there is nothing wrong in being more correct.

stablesortcache: ignore permission and OS errors when writing This cache is related to the obshashrange one and we update it lazily by default. This can be an issue when pulling locally from a read only repository that was not configured for a more aggressive cache warming. The raised permission error was uncaught and could crash the whole process. Errors during cache update should not block Mercurial operations.

firstmergecache: update the variable tracking on-disk state after write Since we updated the on disk content, we should update that value. In practice the object will likely be discarded after the write, but there is nothing wrong in being more correct.

firstmergecache: ignore permission and OS errors when writing This cache is related to the obshashrange one and we update it lazily by default. This can be an issue when pulling locally from a read only repository that was not configured for a more aggressive cache warming. The raised permission error was uncaught and could crash the whole process. Errors during cache update should not block Mercurial operations.

depthcache: update the variable tracking on disk state after write Since we updated the on disk content, we should update that value. In practice the object will likely be discarded after the write, but there is nothing wrong in being more correct.

depthcache: ignore permission and OS errors when writing This cache is related to the obshashrange one and we update it lazily by default. This can be an issue when pulling locally from a read only repository that was not configured for a more aggressive cache warming. The raised permission error was uncaught and could crash the whole process. Errors during Cache update should not block Mercurial operations.

obscache: update the variable tracking on disk state after write Since we updated the on disk content, we should update that value. In practice the object will likely be discarded after the write, but there is nothing wrong in being more correct.

obscache: ignore permission and OS errors when writing In practice we always update this cache along side a new transaction, with lock taken so permission issues should not happens. However, staying on the safe side is better. Errors during Cache update should not block Mercurial operations.

obshashrange: force reset if many changes If there is many new markers (or the markers affect many changesets) resetting affected changeset can get slow. A common case for that is then changeset and markers are added in different transaction, (eg: when using clone bundle). When we detect such case, we reset the obshashrange cache, rewarming it should be faster. Here many is arbitrarily set to 10 000. The number might get adjusted.

topic: refactor revset.py slightly Checking both kind == 'literal' and topic.startswith('literal:') seems to be redundant, because of how stringutil.stringmatcher() works.

test: update output to match new `hg verify` reports CORE-TEST-OUTPUT-UPDATE: f1186c292d03

test: update output to match new "pull" phase report CORE-TEST-OUTPUT-UPDATE: 89630d0b3e23

test: adapt to change in revert messages order CORE-TEST-OUTPUT-UPDATE: cb70501d8b71

rewind: fix help text (mostly grammar, but also s/precursor/predecessor)

evolve: fix use of "'%d' % ctx" ctx has not been convertible to int since Mercurial commit 38f480502043 (context: remove basectx.__int__ (API), 2018-02-24). I decided to use "%s" instead to match other similar messages in evolvecmd.py. I also added a space to match the other messages.

stablerange: only issue the message once There is a flag to prevent issuing the long load message multiple time. However, it was never set. This is now fixed

changelog: fix version number

branching: merge back with stable

packaing: mark as development version This help avoid confusion when installing in progress work.

Added tag 8.2.0 for changeset 8d8f08245f97

branching: merge back with stable

packaging: prepare new release

test-compat: merge mercurial-4.4 into mercurial-4.3

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge stable into mercurial-4.6

topic: rework topic templatekw declaration to be 4.5 compatible again Mercurial prior to 4.5 does not have a requires keyword, so we need a compatibility layer.

test-compat: merge mercurial-4.4 into mercurial-4.3

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge stable into mercurial-4.6

branching: merge the two stable heads

test-output: backout test output update in 8fcee1e65e29

test-output: backout test output update in 503ae2689df8

topic: update the changelog with the 's#' alias change

topic: update other occurrence of 't0' is 's0' in the code

topic: mention t0 in topic documentation

stack: display 's#' instead of 't#' and 'b#' If we want people to use it, we should display it.

stack: clarify s# error message in case of branch A branch might have a lots of changeset, with all of them public.

alias: allow reference through 's#' We keep the 't#' option, but we hope to be able to deprecate it at some point. We move to 's#' because it refers to `stack` a more generic concept. than topic. In addition, this allows to phase out 'b#' that collide with normal hex-node.

topic-revset: get the list of revset through the official localrepo API This is simpler and faster. In addition we tighter the logic to be used in case of empty topic. We do not need to fall back to revision search.

topic-revset: strictly read string Making a clear distinction between string and symbol passed to topic is important when it comes to empty topic. Filtering an empty topic name is harmless. Searching a non existent revision is not.

test: search for empty topic as a string The reduce the ambiguity in the test to help with the next change.

topic: handle ambiguous arguments to topic() revset These arguments can be interpreted as either string or a revset. The decision is made based on existence of topic with such a name. This matches the behavior of branch() revset. The code needs to know all topics that ever existed in the repo, because some commands report "disappearance" of topics after certain operations, using this revset (e.g. via stack.stack or repo.revs).

topic: handle revsets passed to topic() revset This handles cases when the argument can't be interpreted as a string at all.

topic: handle string argument to topic() revset earlier

topic: prepare to handle non-string arguments to topic() revset

topic: return result early if there are no arguments to topic() revset

obshashrange: enable by default We have been testing this in various placed and specific stress test have been performed. It is time to enable this by default

obshashrange: issue a warning if the cache takes a long time to load The -current- implementation of the obshashrange cache can get slow. This will be fixed eventually, in the mean time we inform people on large repository of what have been going on. Since we are about to enable obshashrange by default, we need to make sure nobody will have an (unexplained) bad surprise.

pick: fix last references of grab in code Grab was still referenced on comments and variable names.

pick: replace `hg grab` invocation in test with `hg pick`

pick: replace "grabstate" with "pickstate"

pick: use "pick" as operation name in obsolescence markers

pick: use "pick" instead of "grab" for various internal API This should not much user visible impact but this is cleaner.

pick: update command output to mention pick instead of grab

pick: rename the grab command to pick Grab is ambiguous with "graft", "pick" match the associated verb in histedit. The "grab" name is preserved as an alias for now.

grab: prefix function with 'cmd' as for the other command in the extension

readme: document the purpose of the evolve extension Another place for the explanation to live.

prune: replace --biject with --pair People have been complaining about `--biject` being to obscure for a while. A recent discussion with Pulkit Goyal and Dan Villiom Podlaski Christiansen produce some new concrete proposal that we liked. We eventually settle on using `--pair`. The `--biject` flag will be kept as an alias for a while.

topic: check that repo.currenttopic is set before using it as an argument repo.currenttopic can be an empty string, which means there's no current topic set. This fact can be used to short-circuit some checks. Also, this avoids passing an empty string as an argument to topic() revset.

test: update output after merge message change CORE-TEST-OUTPUT-UPDATE: f785073f792c CORE-TEST-OUTPUT-UPDATE: a3fd84f4fb38

readme: document the tag we use on output change

branching: merge with stable

packaging: fix debian version numbers

packaging: fix debian version numbers

branching: merge stable into default

packaging: mark in progress work as development version This avoid confusion when people install development version.

Added tag 8.1.2 for changeset f1cde4c97806

packagin: prepare version 8.1.2

obshashrange: force obshashrange invalidation by bumping schema The fix in 8.1.1 deserve recomputing the obs hash range cache. So we bump its schema version to declare the older cache invalid. The other caches, including the expensive stablerange are unaffected.

test-compat: merge mercurial-4.4 into mercurial-4.3

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge stable into mercurial-4.6

branching: merge with stable

changelog: mention the database robutness fix in the changelog

sqlcache: also catch malformed database error This is apparently another way for sqlite to fail at concurrency.

stablerange: rework saving logic to be clearer and safer

obshashrange: rework saving branching to be clearer and safer

sqlcache: protect read query too Some error (like locked database) can even happens when doing readonly operation. So we protect them too. At that point, it seems that pysqlite3 is not the right tool for this job.

sqlite: fast path when nothing to save If we have no new data to save, we should try to do anything. Doing something concurrently is hard enough. If we can avoid doing it at all that would be great.

sqlcache: initialize meta table last It turns out that pysqlite commit after each table creation. This commit is an hopeless attemps to make the caches more concurrent friendly.

obshashrange: always check in base cachekey against the recorded one Ignoring the check in the none case is just disaster waiting to happens.

stablerangecache: fix output in the drifted case The node were not hex, and the field had different order in the pair. This is now fixed.

sqlcache: also ignore integrity error integrity error can happens when multiple client tries to warm similar cache. Given we leave multiple hole in the cache that can be warmed by anyone, this is harder to avoid that we would like. We simply catch the error in this case. Someone will warm the missing entry later.

sqlcache: cache OperationError when saving This is a cache, so we should not crash when trying to operate on it. OperationError can happens when the database is seen as readonly or locked.

sqlcache: passe better connection option These new options should help with handling transaction consistency and database access on high load.

contrib: introduce a small script to stress tests obsolescence exchange Tester have been reporting some error that seems to originate from concurrent access/update to the cache. This script will be useful to reproduce these situations locally.

changelog: mention the database robutness fix in the changelog

sqlcache: also catch malformed database error This is apparently another way for sqlite to fail at concurrency.

stablerange: rework saving logic to be clearer and safer

obshashrange: rework saving branching to be clearer and safer

sqlcache: protect read query too Some error (like locked database) can even happens when doing readonly operation. So we protect them too. At that point, it seems that pysqlite3 is not the right tool for this job.

sqlite: fast path when nothing to save If we have no new data to save, we should try to do anything. Doing something concurrently is hard enough. If we can avoid doing it at all that would be great.

sqlcache: initialize meta table last It turns out that pysqlite commit after each table creation. This commit is an hopeless attemps to make the caches more concurrent friendly.

obshashrange: always check in base cachekey against the recorded one Ignoring the check in the none case is just disaster waiting to happens.

stablerangecache: fix output in the drifted case The node were not hex, and the field had different order in the pair. This is now fixed.

sqlcache: also ignore integrity error integrity error can happens when multiple client tries to warm similar cache. Given we leave multiple hole in the cache that can be warmed by anyone, this is harder to avoid that we would like. We simply catch the error in this case. Someone will warm the missing entry later.

sqlcache: cache OperationError when saving This is a cache, so we should not crash when trying to operate on it. OperationError can happens when the database is seen as readonly or locked.

sqlcache: passe better connection option These new options should help with handling transaction consistency and database access on high load.

contrib: introduce a small script to stress tests obsolescence exchange Tester have been reporting some error that seems to originate from concurrent access/update to the cache. This script will be useful to reproduce these situations locally.

test-compat: merge mercurial-4.4 into mercurial-4.3

test: adjust glob in previous changeset I forgot to glob the time.

branching: merge with stable

packaging: mark as development version This avoid confusion.

Added tag 8.1.1 for changeset e7abf863e113

packaging: prepare release 8.1.1 Topic is untouched so we keep the previous version number.

branching: merge with stable

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge stable into mercurial-4.6

changelog: add a line about improved prune documentation

changelog: reorder content

prune: more human-friendly documentation The previous help string generally had a highly technical language. I've tried my best to address that.

prune: improve help first line The previous help string for prune didn't mention successors in the first line. Note: Pierre-Yves David changed the original "hidden" to "obsolete" as it is better concept to put forward. (a bit more specific and with more consequence than just "hidden"). We need a good `hg help obsolete/obsolescence` result. We'll try to get this in the next version.

prune: try to clarify the "multi" revisions case I hope this highlight the use case for all three options.

prune: move help about biject after the one about split and fold The --biject flag seems a less common use case.

prune: no longer consider dropping --biject Field testing show it save people one wrong call often enough that it is worth keeping.

prune: more human-friendly documentation for --biject

prune: use ``-s/--succ`` in documentation Extracted by Pierre-Yves David

branching: merge with stable

compat: import the module dagutil module in evolve Discovery code is core have been rewritten to no longer depends on dagutil and the module have been removed. This break evolve's obsmarker discovery (older version of the discovery use the same concept).. A quick work around is to import the dagutil module in evolve and use that for now.

evolve: delete evolvestate after aborting interrupted `next --evolve` We didn't use to delete the evolvestate after aborting an interrupted `next --evolve`. This patch makes sure we do that. The test changes demonstrate the fix and we add a CHANGELOG entry about the fix.

tests: check that we delete evolvestate correctly after abort/stop This patch adds test to check whether we delete the evolvestate correctly after aborting or stopping an interrupted evolve which is caused because of `next --evolve`.

changelog: update with issue5927 fix

evolve: set the second parent if we get conflicts while evolving This patch makes sure we set the second parent correctly if we run into conflicts while evolving. Also, we need to make sure to reset to one parent before committing.

evolvecmd: import mercurial.node module as nodemod We use node as a variable name at few places and the conflicts with variable name are not good. Moreover this practice is followed in core mercurial also.

tests: demonstrate the interrupted evolve does not set p2 This patch adds a test to demonstrate issue5927 which is about evolving not setting p2 correctly in interruption.

cleanup: remove unused import

cleanup: remove old comment that lost all meaning

template: remove compatibility layer for `showobsolete` The keyword exist in core since 4.2

exthelper: drop compatibility layer for `command` We dropped support for 4.2.

topic: drop compat layer for `command` We dropped support for 4.2

legacy: drop compat layer for "command"

drophack: drop compat layer for "command"

compat: drop compatibility layer for updatecaches The `repo.updatecaches` method is support since Mercurial 4.2

branching: merge with stable

obshashrange: force saving of stablesort and firstmerge cache For some reason the check in repo is not working for stable sort. We also force firstmerge to be saved as test show it was missing.

test: add a test about cache warming This test reveal that multiple cache are not saved to disk after discovery (firstmerge, stablesort).

stablerange: save stablesort cache alongside the stablerange one This one does not introduce inconsistency but helps performance. G: changed hgext3rd/evolve/stablerangecache.py

obshashrange: always save stable range cache alongside the obshashrange one If the on disk date cover different area, the invalidation of affected range will misbehave.

obshashrange: clear in-memory cache alongside the sqlite one Clearing on disk data in nice, but we also need to remove in memory one or we'll get incorrect results.

branching: merge with fixes on stable

changelog: summarize the recent improvement

obshashrange: re-enabled more selective pruning of affected range

obshashrange: fix computation of affected ranges The computation of impacted nodes and associated revs is fully reworked. In addition,we introduce multiple new tests covering cases that were previous wrongly handled.

obshashrange: add more validation output to tests We are about to update the logic and add more tests.

obshashrange: correctly detect changeset directly affected by prune Before this changesets, parent of standard obsmarkers were wrongly considered affected and pruned changeset were wrongly not considered affected.

obshashrange: do not search for affected ranges above the highest we have It is a fast way to know we don't have an affected range for an affected revision.

obshashrange: do not search for affected stable range cache is unavailable Before this changeset we where resetting in all cases, and then looking for affected ranges. In addition is the stable range were not available, the functions silently returned no ranges affected. Now, do one or the other depending of the availability of the stable range cache. In practice we always do a broad reset because the code detecting affected changeset is currently buggy.

stablerange: build closure a bit less inefficiently The new way make me a bit less sad than the old one.

discovery: make sure repository wrapping happens in the right order Otherwise we may end up in situation were cache are not warmed in the right order, crashing.

branching: merge with stable

changelog: add an entry about the next --evolve fix

changelog: update 8.1.0 release date

next: fix topic constraint in the --evolve case We were using the wrong variable.

next: use set for membership testing There are no reason to use a list here.

test: adapt to core output change on unknown command CORE-TEST-OUTPUT-UPDATE: 5199c5b6fd29

compat: use new style template keyword declaration

test: fix previous changeset output The previous changeset got published prematurely.

obshashrange: add a test for `hg debugupdatecache` It seem to be properly filling the caches.

branching: merge with stable

templatekw: do not override in-core {obsolete} keyword The extension version uses old API, which will be deprecated in Mercurial 4.8.

packaging: mark version as development version This avoid confusion when installing non-tagged version.

Added tag 8.1.0 for changeset 2c5d79c6459c

packaging: prepare version

branching: merge stable into default

test-compat: merge mercurial-4.4 into mercurial-4.3

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge stable into mercurial-4.6

compat: fix obslog compatiblity with 4.3 Due to the way of how successor sets are retrieved in new Mercurial version, retrieving it again in 4.3 way would be a performance hit and complexify the code too much. Don't retrieve markers of successor sets which makes obslog filtered output more limited in 4.3.

compat: add a fixed version of mergecopies for hg<=4.3 In hg<=4.3, copies._fullcopytracing() does not exist and we have to wrap copies.mergecopies() to fix the AssertionError coming from core.

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge stable into mercurial-4.6

compat: make compatible call to ui.edit for hg <= 4.3 This is similar to what is already happening elsewhere.

compat: ignore extra status feature for hg <= 4.3 The feature does not exist in 4.3 and below.

format: fix indentation level Previous change got pushed without the fix by mistake.

test-compat: merge mercurial-4.6 into mercurial-4.5

test-compat: merge stable into mercurial-4.6

compat: disable empty topic warning on `hg phases` for hg <=4.5 This is annoying to support for lower version.

compat: restore compatibility with Mercurial <= 4.5 The __init__ arguments changed a lot in 4.6 and 4.7, lets do be as transparent as possible

test-compat: merge stable into mercurial-4.6

test-compat: merge stable into mercurial-4.6

branching: merge stable back into default

compat: improve detection of Mercurial 4.6 fixed case where AttributeError can be thrown when importing wireproto

cleanup: use NotImplementedError instead of NotImplemented Caught by pyflakes.

CHANGELOG: add some entries and remove duplicated entries

branching: merge default into stable The stable branch of Mercurial core now contains Mercurial 4.7 so evolve branch policy requires this merge. The @ bookmark is in the right location, so people doing clone will get to the latest release.

branching: merge with the other head

test-compat: backed out changeset 8fe8152ff071 These output change were for 4.7 only.

test-compat: backed out changeset 41fc764bf28c These output change are for mercurial-4.7 only

test-compat: backed out changeset dda5b2134b32 These change were for Mercurial 4.7 only.

test-compat: backout change to 1e103c7f7663

compat: use older API for older version This API changed in 4.7, we need to adjust.

branching: create mercurial-4.6 branch for updated test output This branch will be used to check for 4.6 compatibility.

builddependencies: extract function for getting successors The code no longer makes a difference between single- and mult-successor cases and just needs a set (or generator, really) of successors to iterate over. Let's extract that into a function.

builddependencies: share code between single- and multi-successor cases The two cases now have more similar structure ("if succ in revs: dependencies[r].add(succ)"), so let's share the code so it doesn't start drifting apart again.

builddependencies: build inverse dict from forward dict It's error-prone to keep "dependencies" and "rdependencies" in sync (we don't do it correctly when there are multiple successors or a node). It's easier to just create "rependencies" from "dependencies" after it's complete.

builddependencies: remove a use of defaultdict I don't see much reason to make "rdependencies" be a defaultdict when "dependencies" is not. It's easy to initialize each entry ourselves.

branching: merge with stable

builddependencies: don't remove found deps when divergence found (issue5946) It seems obviously wrong to not keep any dependencies for a revision that we had already found (for p1) if we run into divergence (from p2). It also happens to fix issue5946 :)

builddependencies: don't add dependency on revision outside input set This was already handled in the single-successor case, but had been missed in the multiple-successors case. Note that there seems to be a copy of builddependencies() in the topics extension. I don't use topics more than I have to, so I'll let someone else fix that code.

builddependencies: consider all divergent successors We were only considering one. In test-evolve-abort-conentdiv.t:165, the input revs were {5, 8} and dependency dict was {8: set([]), 5: set([10])}, which is a little weird (10 is not in the input set). It still worked because the callers used it (they seemed to only care if there were *any* dependencies). This patch fixes the issue by considering all successors. That means the dependency dict will be {8: set([]), 5: set([8, 10])} after this patch. The next patch will remove the 10 from that set.

tests: add test for issue5946 The test case is a copy of the one for 5833. The only difference is that the merge parents are recorded in the opposite order (and that the test is truncated because it fails).

obslog: check filtered output with folded changesets

obslog: check filtered output with splitted changesets

obslog: check filtered output with pruned changesets

obslog: check filtered output with amended changesets

tests: add a content-divergent obshistory test

tests: extract the obshistory amend then fold test case into a separate file

tests: extract the content-divergence test case into a separate file

tests: extract the obshistory fold test case into a separate file

tests: extract the obshistory lots of split test case into a separate file

tests: extract the obshistory split test case into a separate file

tests: extract the obshistory prune test case into a separate file

tests: extract the obshistory amend test case into a separate file

tests: extract obshistory setup in a separate file We are gonna soon explode the obshistory test file into several, extract the setup to reuse it as much as possible.

obslog: add a new flag to filter out non-local nodes

compat: drop compatibility hack for mercurial <4.3 We no longer support version prior 4.3.

compat: temporarily move copies fix to compat.py This patch moves a fixed version of copies._fullcopytracing() to compat.py as this was not fixed in core before release and also we need to do this anyway for the older versions of mercurial. This fix is that when base changeset is not ancestor of any of the merging commits, we don't throw an error. The phabricator differential which will fix this in core is https://phab.mercurial-scm.org/D3896. This fixes the traceback we get in previous changeset while relocating one of the content-divergent changeset.

evolve: continue conflicted relocation content-divergence This patch adds logic to continue an conflicted content-divergence resolution which was interrupted while relocating one of the divergent commits. The tests shows the there is some mishandling of copies internally which will be fixed in next patch.

topic: use self instead of repo in topicrepo methods Referring to repo here was somehow preventing it from being garbage-collected (important in hgweb, where currently every request gets a new repo).

evolvecmd: introduce fn to be wrapped by extensions resolving content-div The function added will be used by extension by wrapping it and adding logic to merge data introduced by them. For example: topic extension can wrap this function and add logic to merge topic names.

evolvecmd: move remaining logic to merge commit desc to existing utility fn This was a bit awful because we had a utility function and still we did some of merging outside of that fn. So let's move the remaining parts there.

amend: allow aborting an `amend --patch` by saving an empty file (issue5925) This patch fixes issue5925 by allow aborting a `hg amend --patch` call by saving an empty patch file. This is similar to aborting of `hg amend` when commit message is empty. Test changes demonstrate the fix.

tests: add a test to demonstrate issue5925 The issue will be fixed in next patch.

test: fix possible output change from 4.7 Change in debug timing can display these extra messages.

state: add the get() method that evolvecmd:1836 expects

rewing: prevent rewind in case of uncommitted changes rewind can update, which means merge and troubles. We might relax this limitation in the future.

rewind: default to rewinding the current stack

rewing: add the ability to rewind "from" revisions

evolve: exclude "identical" precursors from the precursors set I'm not sure it is the right thing to do, but it simply thing a lot for now. Otherwise, using 'precursors' to find rewind direction become too complex. This is going to give problematic result in case of prune. Since there are no other precursors to follow.

rewind: move revision selection into its own function This will help making the logic more advanced.

rewind: automatically rewind entire stack We now rewind the full stack, avoiding creating orphans. A `--exact` flag is added to force rewinding only the explicitly specified changesets.

rewind: add a test about rewinding top of stack For now this rewind is creating an orphan. We add the test to check the behavior in that case.

rewind: use rewinded parent when creating multiple changesets Use use the rewinded parent instead of creating orphans based on identical, but obsolete, changesets.

rewind: add a test for rewinding a fold The code already have basic support for case. However the result create orphan that will need to be improved. However, we keep this changeset simple.

rewind: add a test for rewinding a split There are no code change needed but it is worth testing on its own.

rewind: update the working copy if it gets obsoleted If the working copy parent is rewinded, follow the rewind.

rewind: add a message about obsolete changeset Not the best output, but useful to have the data. We can improve that later.

rewind: obsolete latest successors unless instructed otherwise To prevent the creations of divergence, we automatically mark the successors set of the rewinded changeset as obsoleted by the rewind result. A new flag `--as-divergence` is added to disable this behavior.

rewind: test rewinding an amended changesets We are now able to rewind a simple amended changeset. For now, its current successors has not been obsoleted and we created divergence.

rewind: add a message about the rewinded changesets This helps to understand what happened.

rewind: add a proto version of the command This first version focus on rewinding a single revision without care for the consequence.

stablesort: make sure heads are processed in sorted order changeset 72621094505f will fix some ordering issue in the `heads` revset so we stabilise the output in advance.

evolve: move the bookmarks also when updating to successor (issue5923) When we are on an obsolete node and does `hg evolve`, it updates to it's sucessor, however it does not move the bookmark to the successor. This patch adds logic to make sure we move the bookmark too. Test change demonstrates the fix.

tests: add test to demonstrate issue5923 This will be fixed in upcoming patch.

changelog: add an entry about the new `evolve.interrupted` section

evolve: make one missed error to align other error messages Previous patches missed this error to change it to the new format. Let's align this with all other messages raised by `hg evolve` command.

evolve: raise error.InterventionRequired instead of Abort when conflicts error.InterventionRequired is a better error to raise in such cases. Thanks to marmoute for noticing this.

changelog: add a changelog entry about divergence resolution We made a lots of progress there.

evolve: create resolved cset on successors of current parents While resolving content-divergence, sometimes, the parent can be obsolete and have a successor. We should consider the successors of the parents instead of obsolete parents as that will do something like orphan+content-divergence resolution both at the same time which is powerful and results in a single stack while resolving content-divergence of stacks. The test changes demonstrates that we can now successfully evolve a content divergent stack.

tests: fix a test case to not create conflicts This is the test case where we are testing about divergence resolution of stack of patches. If the stack is as follows: C1 C2 | | B1 B2 | | A1 A2 \/ base And A1-A2, B1-B2 and C1-C2 are content-divergent, and merging A1-A2 results in conflicts. Now if you resolve conflicts and continue resoling B1-B2, the conflicts of A1-A2 will still be there. We need somehow to understand the work we has done and not create conflicts again. To test the evolution functionality for now, we make sure conflicts does not occur.

evolve: introduce a resolutionparent variable and store it in evolvestate This patch introduces a resolutionparent variable which will be the parent of final changeset after resolving content-divergent changesets. Till now, the parent is always the parent of one of the divergent node, but now in upcoming cases, it can be a successor of both the parents of divergent nodes.

evolve: introduce a dirstatedance() fn to fix dirstate after parent change This patch introduces a dirstatedance() function which will be used after fixing the dirstate when we change parents using repo.dirstate.setparents(). Look at docs added for more details.

evolve: create a new commit instead of amending one of the divergents This patch changes the behavior of evolve command while resolving content-divergence to create a new commit instead of amending one of the divergent ones. In past, I have made this change, backed out this change and now today again I am doing this change, so let's dive in some history. Using cmdrewrite.amend() was never a good option as that requires hack to delete the evolvestate and also gives us less control over things. We can't make the commit on top of different parents as that of content-divergent ones. Due to all these, I first made this change to create a new commit instead of amending one. But, after few days, there was flakiness observed in the tests and turned out that we need to do some dirstate dance as repo.dirstate.setparents() does not always fix the dirstate. That flakiness was a blocker for progress at that time and we decided to switch to amend back so that we can have things working with some hacks and we can later fix the implementation part. Now, yesterday while tackling resolving content-divergence of a stack which is as follows: C1 C2 | | B1 B2 | | A1 A2 \/ base where, A1-A2, B1-B2, C1-C2 are content-divergent with each other. Now we can resolve A1-A2 very well because they have the same parent and let's say that resolution leads to A3. Now, we want to resolve B1-B2 and make the new resolution commit on top of A3 so that we can end up something like: C3 | B3 | A3 | base however, amending one of the divergent changesets, it's not possible to create a commit on a different parent like A3 here without some relocation. We should prevent relocation as that may leads to some conflicts and should change the parent before committing. So, looking ahead, we can't move with using amend as still using that we will need some relocation hacks making code ugly and prone to bad behaviors, bugs. Let's change back to creating a new commit so that we can move forward in a good way. About repo.dirstate.setparents() not setting the dirstate, I have researched yesterday night about how we can do that and found out that we can use cmdrewrite._uncommitdirstate() here. Expect upcoming patches to improve the documentation of that function. There are lot of test changes because of change in hash but there is no behavior change. The only behavior change is in test-evolve-abort-contentdiv.t which is nice because creating a new commit helps us in stripping that while aborting. We have a lot of testing of content-divergence and no behavior change gives enough confidence for making this change. I reviewed the patch carefully to make sure there is no behavior change and I suggest reviewer to do the same.

evolve: always order the revs to be evolved The current code only order the revs if we are resolving orphans and not in other case. The ordering is important when we pass --all and tackle multiple occurence of the same instability. Let's order the revs for each instability. There are enough test coverage of phase-divergence and content-divergence that I feel confident doing it because none of the test changed. The change in test-evolve-content-divergent.t demonstrates the indeed ordering helped.

tests: add test of resolution of content-divergent stacks This patch adds a test of resolution of content-divergence stacks where a series of changesets get mutated as two different series resulting in whole content-divergent stacks. As the tests shows, we are not processing the changesets in right order which needs to be fixed first.

evolve: improve error messages when conflicts occur This patch improves the error messages when conflicts occur. First, we drop the line 'evolution failed', that is not the best line we can show and evolution didn't failed, it's just interrupted by the conflicts and when user will run `hg evolve --continue`, things will be fine. I still remember when I first saw 'evolution failed', I got a bit scare as am I in a recoverable position or not. So let's drop this scary line. Second, we replace the error messages to say `resolve conflicts and see help-topic`. The help topic was added recently and documents all the three flags very well. Addition of tests also showed that all the three flags works fine with all the three instability type. So we should advertise them more. Third, we now raise the error with our error message rather than raising MergeFailure and having evolution related text in hint or stderr above. This increase the focus on the error message we want to show. After this patch, I think error messages by evolve in case of conflicts will be same in every case.

evolve: point to `hg help evolve.interrupted` while resolving content-div Recent test additions shows that --abort and --stop works well while resolving content-divergence and we should advertise them. This patch does so by pointing to evolve.interrupted help topic.

tests: add test about aborting content-divergence when multiple parents This patch adds tests for --abort flag of hg evolve command when we are resolving content-divergence which are on different parents and parent of one of them is the gca of both of them. The tests shows that we are doing good and we should advertise the flag during conflicts.

CHANGELOG: add an entry about the --update flag Since --update is still the default, we make the entry about --no-update.

evolve: show unfinished information in `hg status -v` (issue5886) `hg status -v` shows information about unfinished states or `hg status` shows it when `commands.status.verbose=True` is set. Before this patch, information about interrupted evolve does not show up because evolve does not resgiters in cmdutil.STATES. This patch make sure we register evolve related information there. There has been an idea to unify cmdutil.unfinishedstates and cmdutil.STATES which needs some work and the resulting state does looks a bit complicated. So till the time we unify them, let's fix this bug by registering in cmdutil.STATES.

style: drop a (commented) debug print Left-over from 4dcf87849f9d.

tests: update tests output with changes in d0abd7949ea3 in core hg CORE-TEST-OUTPUT-UPDATE: d0abd7949ea3 CORE-TEST-OUTPUT-UPDATE: 1e9c357d3ddf

branching: merge with stable Merging with the new 8.0.1 release.

Added tag 8.0.1 for changeset 0887c30255a1

packaging: prepare for 8.0.1 release

changelog: add a couple of missing entry

evolve: strip the extra obsmarkers if any on `hg evolve --abort` Previous patches started storing some obsmarkers which needs to stripped during `evolve --abort` which can't be stripped by stripping the new evolved changesets because they point to a node which existed before the evolution was performed. This patch adds logic to strip those obsmarkers by finding their indices in the obsstore and then stripping them.

evolve: store the obsmarkers to be deleted in evolvestate Sometimes, we don't create a new node and obsolete one of the old node in favour of an existing node. When user calls, `hg evolve --abort`, we need to strip that obsmarker to go back in the same old state. The obsmarker created for new node are stripped when the new nodes are stripped. This patch start storing such obsmarkers in the evolvestate so that we can delete them later if required. Right now we just store successsor and predecessor information, we might need a better obsmarker serialization techinque in future to make it more robust.

evolve: store obsmarkers to be deleted in evolvestate There are operations which don't create a new node rather they just obsolete one of the unstable node in favour of existing one. In such cases if a further resolution leads to conflicts and user calls `evolve --abort` or `evolve --stop`, we might need to delete that obsmarker. So let's store such obsmarkers in the evolvestate.

evolve: factor out logic to merge branches in separate function This patch moves the logic to merge branches while resolving content-divergence to a separate function. This makes code clear and better to understand.

tests: add more test of --stop while resolving content-divergence This tests the --stop flag when conflicts occur while relocating one of the divergent changesets.

evolve: strip the relocation commit on `hg evolve --stop` While resolving content-divergence on multiple parents, we relocate one of the commit on the parent of another one and then merge the divergent changesets. Merging can leads to conflicts, and if user does `hg evolve --stop`, we need to strip that relocated changeset too! This patch does that. Test changes demonstrates the fix.

evolve: declare updated and pctx variables in stopevolve() They will used in next patch.

evolve: store the old other divergent node after relocation in evolvestate When the content-divergent changes are on different parents and we relocate of the node to the parent of another one, we get a new other-divergent node. We still need to store the older other-divergent in evolvestate so that we can use that information.

evolve: factor out logic for --stop flag in separate function This will make code clean

tests: add test for --stop flag when resolving multiparents content-div This patch adds a test for --stop flag when we are in an interrupted content-divergent resolution which have multiple parents. Conflicts happen we merge the divergent changesets after relocation. The test shows that we need to strip the relocated changeset.

evolve: move logic to continue interrupted content-div resolution to new fn Each of the other type has defined their own function to continue/complete the interrupted resolution. We take out the logic for content-div resolution too in a separate function to make the top level function looks clean.

evolve: rename help topic evolve.interrupted-evolve to evolve.interrupted `evolve.interrupted-evolve` has the word evolve twice. Now that this help topic is a part of evolve command, evolve.interrupted will mean the interrupted evolve command only.

packaging: update tested-with statements in evolve and topic

CHANGELOG: mention about 4.6.1 compatibility

test-compat: merge mercurial-4.4 into mercurial-4.3

test-compat: merge mercurial-4.5 into mercurial-4.4

test-compat: merge stable into mercurial-4.5

utility: use ui.interactive() instead of checking config value Before this patch, the rev selection prompt which pops up in case of ambiguity to ask user to select a rev used to check the config value of ui.interactive which can is by default set to None. We should use ui.interactive() instead which is more smart in such cases. Thanks to martinvonz for suggesting this.

CHANGELOG: add couple of entries about things fixed We are preparing for a release!

next-prev: always respect the --merge flag An earlier bug fix series which started respecting commands.update.check introduced a bug in which --merge was not respected sometimes. This patch fixes that behavior by passing updatecheck as 'none' to hg.updatetotally() if --merge is passed which is similar to what `hg update` does.

next-prev: add tests showing --merge not respected in some cases This patch adds tests which show that --merge is not respected when you set commands.update.check to any value. This is a bug I wrote few days ago and will fix it in next changeset. I like this process of writing bugs and fixing them.

evolve: store the evolvestate if relocation results in conflicts We missed storing the evolvestate on disk when relocation lead to conflicts. We need to store it to grab information to continue or abort or stop the evolve.

tests: add more test of resolution of content-divergent changesets This patch adds test of resolution of content-divergent changesets when relocation is required and it leads to conflicts. The test shows that we are not doing the right thing. This will be fixed in upcoming patches.

evolvestate: store info about relocation while resolving content-divergence While resolving content-divergence when they are on different parents, we relocate one of the node to parent of another one and this can lead to conflicts sometimes. So we need to store information about that state in evolvestate so that we can use that when user does `hg evolve --continue` or `--stop` or `--abort`. Now that we make sure, we store the new other node in evolvestate, we fix the behavior of handling the relocated commit and merge the right changesets.

evolve: factor out logic to merge content divergent csets in separate fn This will help us in reusing the logic if we need to while doing evolve --continue.

evolve: commit the transaction if conflicts occur while merging content-div Yes, let's commit the transaction in case conflicts occur. Yes, this is what unshelve does and this is one of the reasons we don't like unshelve. Previous patches added support for resolving content-divergence when they are on different parents with parent of one being the gca. In such cases, we relocate one of the divergent commit to the parent of another one. All the relocation stuff and merging divergent changeset stuff happens in a single transaction, so if there are conflicts while merging, we abort and the transaction rollsback and our relocated commit is not applied after abort. We don't want to process the relocation because that can lead to conflicts and we will have dirty wdir because of resolving conflicts. So, we commit the transaction when merging results in conflicts to make sure if relocation happened, we commit that. This fixes the absence of relocation commit found in previous patch and uncover a new bug about handling of relocated commit. Upcoming patch will fix it.

tests: add tests for resolving content-divergence when different parents This patch adds more tests for cases when we try to resolve content-divergence when they are on different parents. The last test shows the we are somehow missing the relocated commit in interrupted transaction. This will be fixed in next patch.

evolve: implement resolution of content-divergence when on differet parents This patch implements the basic version of resolution of content-divergence changesets when they are on different parents but one of the parent is gca of both the different parents. The functionality first relocates the divergent changeset which was left behind and then resolves the content-divergence like it resolves in normal cases. This is a very basic implementation because it still does not work on interrupted evolution. Test changes in this patch shows the basic functionality working. The output of dry-run is also required to be tweaked in such cased. Upcoming patches will add more tests and will improve the implementation to work during conflicts too.

tests: add tests for resolving content-divergence with parent change This patch adds a new test file test-evolve-content-divergence.t which tests the resolution of content divergence when the divergent changesets does not have the same parents.

CHANGELOG: add an entry about fixing issue5877

evolve: pop up editor if conflicts occur while merging commit messages Last patch added support for merging commit messages while resolving content divergence. In case of conflicts we fallback to one of the divergent commit messages. After this patch, we will pop up an editor where user has to resolve the conflicts in the commit messages and then continue. Tests are added for this. We need to fix handling in test-sharing.t to use HGEDITOR to fix conflicts and pass the new commit message. Future improvement can be that we should respect HGMERGE while merging commit descriptions too.

evolve: merge commit messages while resolving content-divergence (issue5877) While resolving content-divergence, there can be divergence in commit messages too which should be resolved. This patch uses the hg's internal merge API's to merge commit messages of divergent changesets with predecessor as the base. In case of conflicts, we fallback to divergent's commit message which should be changed in future. We should pop up the editor with the commit message and the conflict markers and let user fix that. Tests are added for the functionality added.

evolve: move if-else block under the right block the index related if-else should be only executed when all three base, divergent and other have different branch names. I coded this last night and mistakenly mis-indented it. Caught when I was adding more tests.

tests: make sure we don't result in commit messages conflict Upcoming patches will introduce functionality of merging commit messages while resolving content divergence which can lead to conflicts. We don't want to test the conflicts scenario here, so let's make sure there are no conflicts of commit messages in this test.

tests: don't use mkcommit shell function in test-divergent.t Upcoming series will start merging commit descriptions while resolving content-divergence. This tests are here to test the basics of content-divegrence resolution and we should not be testing much of commit description merge here. Replacing mkcommit function with normal hg calls will help us decide on the commit messages ourselves and prevent conflicts while merging commit messages.

evolve: remove duplicated documentation File saving failure…

evolve: show `hg help evolve.interrupted-evolve` in error when conflicts The help list various flags which you can use during interrupted evolve resolution and description about what they do. This will be very helpful for user on how to continue an interrupted evolve.

evolve: add a help topic `Interrupted-Evolve` This help topic contains description on how the various flags work during interrupted evolve. This help topic will be included in error message during interrupted evolve in next patch.

branching: merge with stable

changelog: fix version number error

evolve: return the new node formed only as the replacement sometimes, the the other content divergent changeset is obsoleted in favour of the local divergent changeset in which case we should not store that as a replacement because `hg evolve --abort` will strip that changeset. Let's make sure we return the newnode only if formed. The test results shows that we are still not 100% accurate as we need to strip an obsmarker.

tests: add more test of --abort flag for content-divergence resolution This patch adds test when we resolve multiple content-divergence changesets at once and resolution fo first content-divergence does not form new commits, resolution of second one leads to conflicts. As the output shows, we are wrongly stripping a changeset here, which should be fixed in next patch.

evolve: prompt user for branch selection while resolving content-divergence When resolving content-divergence, there can be case when both the content-divergent changesets are on different named branches. In that case, we are not sure which branch should the resolution commit should be on. This patch adds logic to prompt user to choose the branch which the resolution commit should be on and then creates the new resolution commit on that branch. This also adds a new test file which have tests for the branch selection feature we have added.

evolve: pass the base revision in _completecontentdivergent() We need the base revision to merge commit messages, branches and more stuff. Let's make sure we have that by passing into the function which completes the divergence resolution.

evolve: store the base of content-divergents in evolvestate We need the base changeset for merging commit messages, branches. Let's store it in evolvestate.

evolve: use cmdrewrite.amend() instead of creating a new commit This patch backs out changeset 88601e1cd5d8. We replaced cmdrewrite.amend() with creating new commit because using amend(), a high level function was not good and creating a new commit gave us more control over things. **HOWEVER** to get more control, you need to get arrange all the pieces together perfectly. Creating a new commit, the existing logic has some bugs around dirstate handling, the `repo.dirstate.setparents()` call especially. Sometimes this fixes the dirstate correctly sometimes not. As Pierre-Yves David said, "Having a "clumsy" implementation with the right behavior is usually a good first step. So having an amend based implementation seems like a good first step.", let's take a step back and get back using amend so that we can have a correct basic implementation which is bug free.

corecompat: update the tests output to show phase update summary eb9835014d20 in core added support to transactions to show a summary on the phase changed during that transaction. Due to this, couple of tests output needs to be updated. This patch does that. While realeasing evolve, this patch should be backed out on branches where hg<=4.6. CORE-TEST-OUTPUT-UPDATE: eb9835014d20

CHANGELOG: add an entry about issue 5808 being fixed

next-prev: replace the error hint to mention about `--merge` flag

tests: add tests for conflicts while respecting commands.update.check This patch adds tests to check that we don't run into conflicts while respecting commands.update.check. The error message now does not show the hint about --merge option which we should fix.

next: respect `commands.update.check` config option in `hg next` (issue5808) `commands.update.check` config option determines what level of checking should be done when we update to another revision. When we set this config option to `noconflict`, it updates your working directory to a specified revision only when there will be no conflicts which is a very nice behavior. This patch adds logic to respect the config option so that we can have that nice behavior with `hg next` too. It turns out, we just needed to use hg.updatetotally() and add some cases to check config option. Right now, we only respect the config if value is set to `noconflict`. Otherwise we fallback to the default behavior. This is a part of fixing issue5808. Test changes demonstrate the fix.

prev: respect `commands.update.check` config option in `hg prev` (issue5808) `commands.update.check` config option determines what level of checking should be done when we update to another revision. When we set this config option to `noconflict`, it updates your working directory to a specified revision only when there will be no conflicts which is a very nice behavior. This patch adds logic to respect the config option so that we can have that nice behavior with `hg prev` too. It turns out, we just needed to use hg.updatetotally() and add some cases to check config option. Right now, we only respect the config if value is set to `noconflict`. Otherwise we fallback to the default behavior. This is a part of fixing issue5808. Test changes demonstrate the fix.

tests: add test demonstrating issue5808 This patch adds test showing that `next` and `prev` does not respect the `commands.update.check` config option, particularly when set to `noconflict`.

next: bail out early in `hg next --evolve` if dirty wdir This patch adds logic to bail out early when --evolve is passed with next command and the working directory is dirty. This will help us in preventing the message saying `do you want --merge` which is useless and misleading when `--evolve` is passed.

tests: add test of `hg next --evolve` with dirty working directory I was testing some output change to `hg next --evolve` in dirty working directory and found that we don't have any test for that.

CHANGELOG: add an entry about fixing issue5897

evolve: fix `hg abort` when hg next --evolve leads to conflicts (issue5897) Before this patch, if you do `hg next --evolve` and end up having conflicts and then you try `hg abort`, it will throw a KeyError. This patch fixes that.

tests: add a test demonstrating issue5897 When conflicts are caused due to `hg next --evolve`, `hg evolve --abort` breaks! This patch adds test to demonstrate that. This will be fixed in next patch.

evolve: add an `--update` flag to `hg evolve` command This patch adds a new `--update` flag which defaults to True. The update flag updates the working directory to the head of evolved revisions after `hg evolve` command. This flag can be used to not update your working directory after `hg evolve` which has been one of the biggest feature request from fig team at Google. To not update your working directory, the user can do `hg evolve --no-update`. If the working directory get obsoleted by evolve command, it will update to the successor. This patch also adds some basic tests for the flag introduced.

tests: add tests for testing --abort while content-divergence resolution This patch adds a new test file with a very basic test of `--abort` on an interrupted evolve which was resolving content-divergence. Upcoming patches will add more rigourous tests.

evolve: fix storage of replacements and temprevs node in evolvestate The _completephaseivergent() was not respecting rules on how to store the new node ids created in evolvestate. The rules are: * store the temporary relocated commits in temprevs * store the final new commit in replacements This patch make sure we follow the above rules and also use the return value returned by _resolvephasedivergence(). The tests change demonstrates that we are all good now.

tests: add more tests related to aborting while resolving phase-divergence The tests shows the something is still broken related to abort while resolving phase-divergence which will be fixed in upcoming patches.

topic: suggest to clear a topic that becomes empty We add a hint suggesting "hg topic --clear" when a topic becomes empty. This usually happens when all its changesets get public, that is when the user does a 'phase -p' or when they pull from a server. To discriminate relevant cases for which we should display the hint (and typically exclude explicit 'hg topic --clear' operation), we look for the transaction "type" to only consider 'phase' or 'push' transaction. In the latter case, the transaction name is not simply 'push-response' but it also included the remote URL so we need to match on string content.

topic: display a hint pointing at help when a topic becomes non-empty This is an attempt at avoiding "mistakes" by new users of topics when they pull a topic and publish its changesets while being checked out. In this case, the topic will become empty but still be active; however, if this is a "foreign" topic, the user will not likely want to keep it active for the next commit operation. So we add a hint message pointing at general help of "topics" command so that they can eventually do something and learn about "hg topics --clear".

branching: merge with compat fix on default

evolve: add compat for repair.stripbmrevset which is moved to scmutil This patch adds compatibility logic for repair.stripbmrevset() which is moved to scmutil as bookmarkrevs(). This fixes test-prune.t failure.

evolve: update the readme with more information about contribution

topic: dedent items about publishing behavior in docstring Also change item bullets from '#' to '*'.

topic: use preformatted block for config snippets documentation We add :: markers, empty line and properly indent blocks where needed.

tests: add a test for "hg help -e topic" Currently, some configuration snippets do not render well; we'll fix this in forthcoming changesets.

branching: merge with stable

content-div: add test showing `--stop` works during interrupted resolution This patch adds a test showing that the --stop flag of `hg evolve` works well during interrupted content-divergence resolution. The --stop flag now works with all the three different type of instability resolution very well and we should advertise it more.

evolve: create new commit while resolving content-divergence Before this patch, we used to amend one of the content-divergent changes with the changes from the merge. Creating a new commit will certain advantages like letting user enter a commit message, showing user the new merge diff before commiting the content-divergent resolution and give us more control in the implementation part. The reason amend was used initially was just because it was easy. There are some tests update due to change.

content-divergence: store the resolved revs in evolvestate['replacements'] The support for continuing a conflicted content-divergence resolution was added some time ago. That support lacked storing of the resolved rev in the evolvestate['replacements'] which marks the node as resolved and does not try to resolve that node again. Since we didn't store, the resolution, processes the same node again. This patch makes sure we store the information in evolvestate that a certain content-divergent node is resolved to prevent pre-processing it again.

utility: use ui.interactive() instead of checking config value Before this patch, the rev selection prompt which pops up in case of ambiguity to ask user to select a rev used to check the config value of ui.interactive which can is by default set to None. We should use ui.interactive() instead which is more smart in such cases. Thanks to martinvonz for suggesting this.

evolve: make `--abort` strip the temporary revs created during resolution During divergence resolution, `hg evolve` created temporary relocation commits which needs to be stripped off during `hg evolve --abort` to get back to the same state where we were. Previous patch added a new list temprevs to be stored in evolvestate. This patch starts storing the temp relocated node created during phase-divergence resolution in evolvestate and make sure we consider stripping it too while `hg evolve --abort`. The test changes demonstrate the fix. Now we are sucessfully aborting a phase-divergence resolution.

evolve: store a list of temprevs in evolvestate There are temporary revisions which are created as a part of divergence resolution which needs to be stripped off if user runs `hg evolve --abort`. We need to save the nodeids of those temporary revisions in the evolvestate. The temprevs list will help in the above mentioned use cases.

evolve: check for None before adding in set of revisions to strip After previous patch, replacements can contain None. Let's make sure we don't add None to the revisions to strip during `hg evolve --abort` The test changes demonstrate the usefulness of this and the previous patch. Now abort is working and public changesets are not a problem.

evolve: return the new replacement node to be stored in evolvestate While resolving phase-divergence, we can end up obsoleting the phase-divergent commit in favor of the public commit. Before this patch we return the node of public commit to store as a replacement of the phase-divergent commit. The above will not cause any problem till the time we use `hg evolve --abort` on an interrupted evolve which tries to strip the replacement nodes because it thinks that the replacements nodes are the ones which are created during the resolution and are new. Since we will be stripping a public node, `evolve --abort` will error out saying cannot strip public changeset, unable to abort evolve which is bad. We should make sure, replacements should only consist of new nodes formed. If the instablity is resolved by obsoleting in favour of old changeset, we should not store the old changeset in replacements in evolvestate.

evolve: don't make values of replacements dict lists There was inconsistency in code base related to the values stored in replacements dict in evolvestate. At some places we store a list, at some places we just store the nodeid. Let's make sure we store only the nodeid, not a list. If there are cases, when there are multiple replacements or changesets created during resolution, later patch will introduce storing temprevs in evolvestate which should be used.

tests: add a test file `--abort` flag while resolving phase-divergence This patch adds a new test file test-evolve-abort-phasediv.t which will contain tests for `hg evolve --abort` flag while resolving phase-divergence. There is a case in this test which does not work right which will be fixed in upcoming patches.

evolve: pass revisions as strings to commands.*() It's usually fine to pass integer revisions to e.g. commands.update(), but when directaccess is enabled, it attempts to parse it a revset, which fails.