commitctx: gather more code dealing with copy-in-extra Now that we have a function that deal with the copy-in-extra special case, we can gather more code meant to deal with this special case. Making the rest of the code simpler.

commitctx: rename files to touched in a couple of place This is a clearer word that we will use increasingly over this series. It also make the old variable name available to another usage :-)

commitctx: extract copy information encoding into extra into commit.py The encoding of copy information into extra has multiple subcases and become quite complicated (eg: empty list can be explicitly or implicitly stored for example). In addition, it is niche experimental feature since as it affect the hash, it is only suitable for user who don't mercurial for storage server side (ie: Google). Having this complexity part of the changelog will get in the way of further cleanup. We could have to either move more of that logic into the changelog or to move or extract more of the logic at the higher level. We take the second approach and start gather logic in dedicated function in commit.py.

commitctx: create the new extra dict on its own line A trivial move to make the next changeset easier to read.

commitctx: explicitly pass `manifest` to _commit_manifest As pointed out by Yuya Nishihara.

phabricator: unconditionally pop `test_vcr` to fix debugcallconduit 11592ce6a711 / D8525 accidentally broke debugcallconduit in non-test scenarios because it stopped popping `test_vcr` from `kwargs` unconditionally, so when `--test-vcr` isn't set the empty string still gets passed down as the value of `test_vcr` in `kwargs`. However unlike all the other commands debugcallconduit doesn't have an `**opts` argument to receive it, so it aborts because of invalid arguments. Differential Revision: https://phab.mercurial-scm.org/D8852

phabricator: demonstrate debugcallconduit being broken without --test-vcr This was accidentally broken by 11592ce6a711 / D8525 Differential Revision: https://phab.mercurial-scm.org/D8851

cleanup: fix bad formatting of state.py from D8811 `test-check-format.t` was failing for me. Do I just have the wrong version? Differential Revision: https://phab.mercurial-scm.org/D8841

dirstate: restore original estimation and update comment The former comment didn't reflect the content of the dirstate entries, the two nodes are a fixed header in the file and not per-entry. Split the documented entry into the path part and the fixed header. The heuristic itself is still valid, e.g. for the NetBSD src tree a maximum path size of 142 and an average of 49, resulting in 66 bytes per entry on average. Differential Revision: https://phab.mercurial-scm.org/D8850

merge stable in default

dirstate: revert change to Rust binding The Rust binding uses its own class and is not derived from the regular implementation. As such, it didn't get _nodelen. Differential Revision: https://phab.mercurial-scm.org/D8849

relnotes: copy "next" to "5.5" and clear "next" The same procedure as every year^Wcycle. Differential Revision: https://phab.mercurial-scm.org/D8839

commitctx: extract all the file preparation logic in a new function Before we actually start to create a new commit we have a large block of logic that do the necessary file and manifest commit and that determine which files are been affected by the commit (and how). This is a complex process on its own. It return a "simple" output that can be fed to the next step. The output itself is not that simple as we return a lot of individual items (files, added, removed, ...). My next step (and actual goal for this cleanup) will be to simplify the return by returning a richer object that will be more suited for the variation of data we want to store. After this changeset the `commitctx` is a collection of smaller function with limited scope. The largest one is still `_filecommit` without about 100 lines of code.

commitctx: gather more preparation code within the lock context This is a small change that exist mostly for clarification. I am about to move a large amount of code in its own function. having all that code next to each other will make the next changeset clearer.

commitctx: move a special case about files earlier Same logic as a changeset a bit earlier, the `writefilecopymeta` section is more a post processing details so we move the conditional about `files` value closer to the rest of the code computing `files` value.

commitctx: extract all the manual logic to process the files That branch of the if is significantly more complicated than the other two. Moving it to its own function make it simple to keep the scope limited and to read to the higher level function.

commitctx: treat `filesadded` more like `filesremoved` Accumulating the filename in a list will have a negligible cost and deal with the list of added files like the other ones will make is code cleaning simpler. The two variable with very close name is not great, but my plan is to split most of the code in a separated function which will make the "problem" go away by itself.

commitctx: move `writechangesetcopy` business at the end a code section This code is to handle a specific subcase so we move it a the end. This allow to gather the rest of the "core" code closer to the related logic.

commitctx: move copy meta config reading in a dedicated function The logic is non trivial, make it contained in a function is clearer. It also unlock easy re-use of that logic without having the pass the value around.

commitctx: no longer use the `writecopiesto` variable in the function The `writefilecopymeta` variable already carry the same information, so we can use `writefilecopymeta` in the one conditional where `writecopiesto` was used.

commitctx: extract the function that commit a new manifest The logic is large enough and isolated enough to be extracted, this reduce the size of the main function, making it simpler to follow.

commitctx: stop using weakref proxy for transaction This weakref proxy was introduced in 2007 by 30d4d8985dd8. If I understand it correctly, the logic at that time was relying on the transaction destructor, triggered at garbage collection time to rollback failed transaction. passing the object to sub function directly mean it would live in the function scope and be trapped in the traceback on exception, leading to the transaction rollback too late in some case. Modern transaction usage use explicit opening and closing of transaction and no longer rely on some internal reference counting details. So this weakref proxy is no longer necessary. Absolutely no test are affected when we drop it.

rebase: fix regression in file change detection introduced by 0ecb3b11fcad Before 0ecb3b11fcad, `wctx._compact()`, was called by `wctx.nofilechanges()` as a side effect. Later, it turned out that this side effect is needed to correctly detect which files changed. See https://phab.mercurial-scm.org/D8733#131949 for the history. The problem could also be triggered by running `tests/test-rebase-parameters.t` with `--extra-config-opt rebase.experimental.inmemory=1`. Differential Revision: https://phab.mercurial-scm.org/D8843

context: re-add `overlayworkingctx._compact()` removed in 6a5dcd754842 This partially backs out 6a5dcd754842. The method was and is unused, but a call to it is introduced in the next patch. Differential Revision: https://phab.mercurial-scm.org/D8842

push: test for checks preventing publishing obsolete changeset The main difference from the previous test is how the changeset was obsoleted. In this case it is an amend so publishing the orphan would also create phase divergence. This must not go unnoticed.

push: test for checks preventing publishing obsolete changeset This introduce a simple example, more are coming. See inline documentation for details.

push: another test for checks preventing pushing orphaness to a server In this one, orphan was create with and amend instead of a prune.

push: test the checks preventing pushing orphaness to a server This is introduce a simple example, more are coming. See inline documentation for details.

commitctx: document the None return for "touched" value

tests: add tests trying to use dir as style, as %include, and as __base__ Differential Revision: https://phab.mercurial-scm.org/D8800

tests: fix mistaken copy&paste from commit 4489e9a22763 Differential Revision: https://phab.mercurial-scm.org/D8802

manifest: kill one more instance of the old merge hash hack Differential Revision: https://phab.mercurial-scm.org/D8766

dirstate: isolate node len dependency for the pure version When switching to a 256bit hash function, this still needs adjustment, but concentrates the change in one place. Differential Revision: https://phab.mercurial-scm.org/D8815

fix: update documentation to reflect preference for --source over --rev I should have updated the documentation in 5205b46bd887 (fix: add a -s option to format a revision and its descendants, 2020-03-13) and/or a6ef1e8e2f6d (fix: mark -r as advanced, 2020-03-13)... Differential Revision: https://phab.mercurial-scm.org/D8808

tests: make check-py3-compat.py actually load the specified files correctly For most uses, this change is essentially a no-op, as this script is generally only run by test-check-py3-compat.t, which will already put `$TESTDIR/..` in `$PYTHONPATH`. When running outside of tests, however, `$PYTHONPATH` is likely not set, causing check-py3-compat.py to parse the file from the repo, but then import the installed version, and raise any errors about the installed version, not the one currently in the repo. Additionally, this helps users (like me) who have a strange set up where their home directory (and thus their hg repos) happen to be in a subdirectory of sys.prefix (which is /usr on my system). Since the '.' entry added to sys.path takes precedence over the absolute path of `$TESTDIR/..` in `$PYTHONPATH`, the path to the modules that it imports (and that show up in any stack trace) are *relative*, meaning that we don't detect them as starting with `sys.prefix`. Sample non-test invocation, and the difference this change makes (the path for 'error at <path>:<line>' is correct now):: Before: ``` $ python3 contrib/check-py3-compat.py mercurial/win*.py mercurial/win32.py: error importing: <ValueError> _type_ 'v' not supported (error at check-py3-compat.py:65) mercurial/windows.py: error importing: <ModuleNotFoundError> No module named 'msvcrt' (error at check-py3-compat.py:65) ``` After: ``` $ python3 contrib/check-py3-compat.py mercurial/win*.py mercurial/win32.py: error importing: <ValueError> _type_ 'v' not supported (error at win32.py:11) mercurial/windows.py: error importing: <ModuleNotFoundError> No module named 'msvcrt' (error at windows.py:12) ``` Differential Revision: https://phab.mercurial-scm.org/D8814

tests: virtualenv is only used on py2, rename and conditionalize If I have I have the Debian `python3-virtualenv` package installed on my machine, the import succeeds but then I receive an AttributeError because the package is essentially completely different between py2 and py3, and test-hghave fails. Differential Revision: https://phab.mercurial-scm.org/D8812

morestatus: mention --stop even if not using --verbose Differential Revision: https://phab.mercurial-scm.org/D8811

exchange: backout changeset c26335fa4225 Changeset c26335fa4225 has good intends but introduce significant behavior regressions for multiple important cases. In short there are many case where push would have caught instability creation/propagation that are no longer covered. These behavior have been covered for many years and even if some related case are not currently caught, the covered one should not be regressed. The next four changesets introduce tests for some of these cases. However we could produce many more tests cases since the area is wide and they are many possible combination. (And we should cover them when getting back to this issue) Since 5.5 is one week away, the most reasonable approach seems to back this out while we devise a new way to move forward that preserve the current behavior, catch more issues and also improves the situation that c26335fa4225 target. In addition to the behavior change, c26335fa4225 also introduced output changes. These output changes does not requires a backout per-se, but are part of the same changeset. However they come with a couple of issues that also requires attention: 1) the bulk of the error message have been shoehorned into a multiple line abort message. This seems quite different from what we usually do. The abort message should be a compact and efficient message, with extra details being issued as normal error output beforehand. (with --verbose/--quiet) support. 2) the current output is unbounded, so if there is many (tens, hundreds, thousands, …) of unstable/obsolete changeset involved in the push, the output can quickly become a scary and un-usuable wall of text. So we need some limitation here (same as we have with the remote head list that says A, B , C and # others).

templater: handle None returned from templatedir() My recent 91aa9bba3dc9 (templater: make templatepaths() return a single path, or None, 2020-07-21) didn't account for the fact that `templatedir()` returns `None` in frozen binaries. That is ironic, since the reason I'm working on this is to add support for built-in mapfiles in frozen binaries. This patch updates the callers to handle the `None` case. It's somewhat ugly, but I will have to revisit this soon anyway, since my goal is to make all callers handle that case by trying to read the map file using the resources API instead. Differential Revision: https://phab.mercurial-scm.org/D8810

tests: glob 'mercurial.error' in test-phases.t On python 2 with chg, `mercurial.error` is omitted while printing error. On other cases it's there in error message. I did tried to understand what might be the cause was unable to find one on quick skim through the code.

infinitepush: remove unused import to tempfile Spotted by test-check-pyflakes.t

templater: do search for include of unqualified builtin outside of config code Commit 081b08e4ea13 (templater: look for mapfiles in template paths, 2015-05-15) added support for using things like `%include map-cmdline.default` to include built-in map files without using a valid path to them. This patch rewrites that support by moving it into `_readmapfile()` so it can later be adapted for reading from a non-file resource. Differential Revision: https://phab.mercurial-scm.org/D8792

templater: switch to lower-level config.parse() in _readmapfile() I hope to modify this code to also work with resources loaded from memory (for PyOxidizer support). For that, we'll need to handle the lookup of relative `%include` path (not joined with the base directory of the containing file). This patch prepares for that by using `config.parse()` instead of `config.read()`, since the latter expects a file in the file system. As it happens, this change also lets us clean up the `config` class to not need the `_includepaths` field. That will happen next. Differential Revision: https://phab.mercurial-scm.org/D8791

config: pass both relative and absolute paths to `include` callback The `include` callback is responsible for loading configs from `%include` statements. The callback currently gets passed the absolute path [1] to the config to read. That is created by joining the dirname of the file that contains the `%include` statement. For PyOxidizer support, I'm trying to reduce dependence on paths. This patch helps with that by passing the relative path found in the `%include` statement (but with username expansion, etc.) to the `include` callback. It also turns out that the existing callers can easily adapt to using the relative path. Coming patches will clean that up and then we'll remove the absolute path from the callback. [1] The "absolute path" bit is a bit of a lie -- it's going to be an absolute path if the path that was passed into `config.parse()` was absolute. Differential Revision: https://phab.mercurial-scm.org/D8790

tests: add test for bad template %include and __base__ It doesn't seem like we had any tests for `%include non-existent` and `__base__ = non-existent`. The latter raises an error while the former ignores the include. We should probably also make the former an error. Differential Revision: https://phab.mercurial-scm.org/D8798

tests: add test for unqualified include of a built-in template map The feature was added in 081b08e4ea13 (templater: look for mapfiles in template paths, 2015-05-15), but no test case was added. Differential Revision: https://phab.mercurial-scm.org/D8797

merge with stable

commitctx: extract _filecommit too This function is exclusively used in `commitctx`. So we should extract it too for consistency and to reduce the `localrepo` bloat. This is part of a larger refactoring/cleanup of the commitctx code to clarify and augment the logic gathering metadata useful for copy tracing. The current code is a tad too long and entangled to make such update easy. Differential Revision: https://phab.mercurial-scm.org/D8710

commitctx: extract the function in a dedicated module the function have few callers (< 15) is quite long a mostly independent from the repository itself. It seems like a good candidate to reduce the bloatness of the localrepository class. Extracting it will help us cleaning the code up and splitting it into more reasonable-size function. We don't use a copy trick because the amount of code extract is quite small (<5%) and the de-indent means every single line change anyway. So this is not deemed valuable to do so. This is part of a larger refactoring/cleanup of the commitctx code to clarify and augment the logic gathering metadata useful for copy tracing. The current code is a tad too long and entangled to make such update easy. Differential Revision: https://phab.mercurial-scm.org/D8709

commitctx: document a fast path in _filecommit This block cut off a lot of logic, documenting the why and how seems useful to future reader. This is part of a larger refactoring/cleanup of the commitctx code to clarify and augment the logic gathering metadata useful for copy tracing. The current code is a tad too long and entangled to make such update easy. We start with easy and small cleanup. Differential Revision: https://phab.mercurial-scm.org/D8700

hgweb: simplify now that we always have a single path Both `templatedir()` and `web.templatepath` are now always a single path (or None). Differential Revision: https://phab.mercurial-scm.org/D8788

templater: simplify stylemap() now that templatedir() returns a single path Differential Revision: https://phab.mercurial-scm.org/D8787

templater: make templatepaths() return a single path, or None The function returns either a singleton list or an empty list, so it makes more sense to return a value or None. The plural in the name also doesn't make sense, but `templatepath()` is already taken, so I renamed it to `templatedir()` instead. Differential Revision: https://phab.mercurial-scm.org/D8786

templater: simplify templatepaths() to avoid iterating a singleton list The function iterates over a hard-coded list of one element since d844e220792a (templater: don't search randomly for templates - trust util.datapath, 2014-09-28). Differential Revision: https://phab.mercurial-scm.org/D8785

commitctx: move a tiny else clause above the very long one This is simple to have all the simple case unfold before the 100+ line one. Otherwise it is hard to relate the `else` to the initial conditionnal. This is part of a larger refactoring/cleanup of the commitctx code to clarify and augment the logic gathering metadata useful for copy tracing. The current code is a tad too long and entangled to make such update easy. We start with easy and small cleanup. Differential Revision: https://phab.mercurial-scm.org/D8708

commitctx: consider removed as touched This achieve the same result with clearer code. This is part of a larger refactoring/cleanup of the commitctx code to clarify and augment the logic gathering metadata useful for copy tracing. The current code is a tad too long and entangled to make such update easy. We start with easy and small cleanup. Differential Revision: https://phab.mercurial-scm.org/D8707

commitctx: rename "changed" to touched The variable contains content that are both added and modified. "changed" could be confused with "modified" only, so we pick a less ambiguous naming that will help with more unification. For example, it would make sense to shove the "removed" item in there since this is how the variable is used. This is part of a larger refactoring/cleanup of the commitctx code to clarify and augment the logic gathering metadata useful for copy tracing. The current code is a tad too long and entangled to make such update easy. We start with easy and small cleanup. Differential Revision: https://phab.mercurial-scm.org/D8706

commitctx: more filesremoved assignment closer to removed computation A small change that makes the code flow clearer. This is part of a larger refactoring/cleanup of the commitctx code to clarify and augment the logic gathering metadata useful for copy tracing. The current code is a tad too long and entangled to make such update easy. We start with easy and small cleanup. Differential Revision: https://phab.mercurial-scm.org/D8704

commitctx: compute files added from _filecommit returns When possible, lets avoid recomputing the same information again. This is part of a larger refactoring/cleanup of the commitctx code to clarify and augment the logic gathering metadata useful for copy tracing. The current code is a tad too long and entangled to make such update easy. We start with easy and small cleanup. Differential Revision: https://phab.mercurial-scm.org/D8703

commitctx: return "touched" status from _filecommit Instead of mutating a list passed in argument, we simply return the information from the `_filecommit` function. This make for a cleaner API and allow for richer information to be returned. That richer information will be used in the next commit to avoid duplicated computation. This is part of a larger refactoring/cleanup of the commitctx code to clarify and augment the logic gathering metadata useful for copy tracing. The current code is a tad too long and entangled to make such update easy. We start with easy and small cleanup. Differential Revision: https://phab.mercurial-scm.org/D8702

relnotes: add release notes for relevant changes I did since the 5.4 release After having written the notes, I realized that the added points contain changes that were part of the 5.4.2 release. These were never included in any release notes. I asked on IRC whether they should be added to this file or not, but didn’t get an answer to this question. If they should not be added here, I can remove them. Differential Revision: https://phab.mercurial-scm.org/D8770

relnotes: fix indentation The two points were written by me. For some reason, I missed the fact that the other points were indented by one space. Differential Revision: https://phab.mercurial-scm.org/D8769

relnotes: make spacing before new section consistent Differential Revision: https://phab.mercurial-scm.org/D8768

tests: make one of 'worker process exited' line option in test-chg.t I investigated and it seems like under high load, the child process is already there and no new fork was created. Hence the process was not closed.

infinitepush: fix `{get,put}_args` formatting on Python 3 Calling `.format()` on a byte-string does not work, thus causing an exception on Python 3. This commit adds a function to paper over the difference. Differential Revision: https://phab.mercurial-scm.org/D8781

infinitepush: replace `NamedTemporaryFile` with `pycompat.namedtempfile` Fixes a Python 3 compat error when using the external bundle store. Differential Revision: https://phab.mercurial-scm.org/D8780

chgserver: discard buffered output before restoring fds (issue6207) On Python 3, flush() appears not discarding buffered data on EPIPE, and the buffered data will be carried over to the restored stdout.

hghave: fix possible int('') in has_clang_format()

Added signature for changeset 28163c5de797

Added tag 5.5rc0 for changeset 28163c5de797

merge default into stable for 5.5rc0

phases: move short-lived PyObject pointers to local scope It helps understand which object should be decrefed on goto release.

phases: rename variable used for owned dict of phasesets The phaseroots variable is used for two different objects: borrowed set and owned dict of sets. It's hard to track which object should have to be decrefed on error return.

phases: leverage Py_BuildValue() to build PyInt and steal PyObject "N" means "O" without incref, so we can just return the created tuple.

phases: make sure an exception should be set on error return This should never happen, but the code looks wrong without PyErr_Set*() call.

phases: fix clang-format error

phases: fix error return with no exception from computephases() PySet_Check() does not set an exception.

osutil: fix excessive decref on tuple creation failure in listdir() The stat object would be freed on error for the same reason as the previous patch. makestat() can be inlined, but this patch doesn't change it. https://github.com/python/cpython/blob/2.7/Python/modsupport.c#L292 The __APPLE__ code is untested.

revlog: fix excessive decref on tuple creation failure in parse_index2() Since Py_BuildValue() steals the ownership of "N" arguments, these objects would already be freed if Py_BuildValue() returned NULL. https://github.com/python/cpython/blob/2.7/Python/modsupport.c#L292

tests: correctly match clang-format version >= 10 The previous regex only matched the first digit, so "clang-format version 10.0.0" was recognized as version 1.

state: support validated declaration of nested unfinished ops This enables extensions to define commands that delgate to rebase, evolve, etc. one or more times to also have their own unfinished states for the full sequence of operations without monkey-patching _unfinishedstates. Differential Revision: https://phab.mercurial-scm.org/D8714

absorb: improve message for the case when changeset became empty In changeset f55099982bc5, I introduced the message "became empty and became ...", which I was never very happy with. Raphaël Gomès suggested "became empty as ...". That sounds much nicer. Differential Revision: https://phab.mercurial-scm.org/D8765

relnotes: extend Differential Revision: https://phab.mercurial-scm.org/D8767

merge: document return values of manifestmerge() and calculateupdates() In future patches, I want to add one more return value which represents information which needs to stored and used at commit time. Differential Revision: https://phab.mercurial-scm.org/D8741

merge: refactor code to advise fsmonitor in separate function merge.update() is quite hard to understand, found this an easy win. The end goal is to have better organized merge and mergestate handling and then fix some related bugs. Differential Revision: https://phab.mercurial-scm.org/D8740

mergestate: document what mergestate._results is for Understanding that dict is important for understanding how mergestate is performing operations on dirstate. Differential Revision: https://phab.mercurial-scm.org/D8739

mergestate: rename a helpless variable name to bit helpful one The old variable name `r` makes it ~impossible to understand what does it mean. One can only understand that after going to callers and hoping that its documented there. I also documented return value of the function involved while I was there. Differential Revision: https://phab.mercurial-scm.org/D8738

mergestate: remove unnecessary recordactions() from mergestate class This function is updating dirstate which sounds like not something which a method on mergestate class should do. Also this just calls another function. Lets directly call that function and remove this reducing mergestate responsibility a bit. There was single caller which is updated. Differential Revision: https://phab.mercurial-scm.org/D8737

mergestate: document mergestate records in an organized way This makes clear which mergestate record is used for what and group them based on how they are used right now. Differential Revision: https://phab.mercurial-scm.org/D8719

mergestate: remove unused unsupported related mergestate records I tried to find users of this but was unable to find. Seems like RECORD_OVERRIDE is doing for what they were used before. Differential Revision: https://phab.mercurial-scm.org/D8718

mergestate: add comments about couple of record types and minor reorder I am trying to divide the records into certain groups and then have dedicated objects for them. Taking baby steps in that direction. Differential Revision: https://phab.mercurial-scm.org/D8717

mergestate: remove unrequired RECORD_RESOLVED_OTHER record This was introduced in last cycle however while working on refactoring mergestate, I realized it's unncessary. This will break users who did a merge using previous version, did this kind of storage and before commiting updated the mercurial version. Differential Revision: https://phab.mercurial-scm.org/D8716

mergestate: rename addpath() -> addpathonflict() to prevent confusion addpath() seems to imply that we are adding a new path/entry to the mergestate. Differential Revision: https://phab.mercurial-scm.org/D8715

windows: don’t set `softspace` attribute in `winstdout` Python 2 file objects have the `softspace` attribute (https://docs.python.org/2/library/stdtypes.html#file.softspace), which is used by the print statement to track its internal state. The documentation demands from file-like objects only that the attribute is writable and initialized to 0. Method `file.write()` sets it to 0, but this is not documented. Historically, sys.stdout was replaced by an instance of the `winstdout` class, so it needed to behave exactly the same (the softspace fix was introduced in 705278e70457). Nowadays we don’t replace sys.stdout and don’t use the print statement on `winstdout` instances, so we can safely drop it.

windows: handle file-like objects without isatty() method Copying the function is not nice, but moving around stuff to avoid the circular import didn’t seem to be worth the effort.

exchange: check actually missing revs for obsolete / unstable revs (issue6372) The previous code was using `outgoing.ancestorsof`, which was originally called `outgoing.missingheads` although not containing the missing heads. This confusion was probably the reason why the buggy code was written. The actually outgoing changesets are stored in `outgoing.missing`. By checking all outgoing changesets, we avoid the problem and can show the list of all obsolete or unstable changesets, which is more helpful for the user.

tests: test that push doesn’t complain about unstable changesets if no changes When there’re no outgoing changes, push doesn’t complain about unstable changesets. There is currently a bug (see issue6372) that causes that there is an abort on push when the outgoing changes contain another changeset even if that is not obsolete or unstable. A test case and fix for that is sent in the next patch.

diff: move no-eol text constant to a common location Differential Revision: https://phab.mercurial-scm.org/D8763

revert: fix interactive reverting of end-of-file newline changes The chunk reversal used by `revert -i` in Curses mode was not taking this case into account. Differential Revision: https://phab.mercurial-scm.org/D8762

phabricator: clarify the multiple heads/roots error message for phabsend As pointed out in followup feedback for c1c922391314, it's confusing to say there are multiple items and then only list one. Differential Revision: https://phab.mercurial-scm.org/D8761

error: normalize "unresolved conflicts" error messages with a custom class Differential Revision: https://phab.mercurial-scm.org/D8713

error: unify the error message formats for 'rebase' and 'unshelve' Differential Revision: https://phab.mercurial-scm.org/D8730

debugcommands: create new debugantivirusrunning command This writes the EICAR test file to .hg/cache, in an attempt to trigger an AV scanner's scanning engine. This should let us (in theory) detect some cases when a user's slowness is a result of AV scanning. Differential Revision: https://phab.mercurial-scm.org/D8353

windows: always work around EINVAL in case of broken pipe for stdout / stderr In 29a905fe23ae, I missed the fact that the `winstdout` class works around two unrelated bugs (size limit when writing to consoles and EINVAL in case of broken pipe) and that the latter bug happens even when no console is involved. When writing a test for this, I realized that the same problem applies to stderr, so I applied the workaround for EINVAL to both stdout and stderr. The size limit is worked around in the same case as before (consoles on Windows on Python 2). For that, I changed the `winstdout` class.

tests: make pipes / PTYs non-inheritable in test-stdio.py A following patch requires that to test closing the receiving end of the pipe / PTYs. Even for existing tests, it might be safer to make the lifetime of the pipes / PTYs as short as possible.

util: enhance `nullcontextmanager` to be able to return __enter__ result This makes its functionality and signature equivalent to Python 3.7’s contextlib.nullcontext().

windows: augment docstring of `winstdout` class

discovery: change users of `outgoing.missingheads` to `outgoing.ancestorsof` The attribute `missingheads` was recently renamed to `ancestorsof`, as it, despite the old name, doesn’t contain the missing heads but the changesets that were requested (including ancestors) for the outgoing operation. Changing all the users enables to print a warning if the old name is used. There is a good chance that some of the users are buggy because of the old name. Changing them to use the new name makes it more obvious that they are buggy. All users need to be reviewed for bugs. When sending patches for fixing them, the change will be more obvious without having to explain again and again the discrepancy of the old attribute name and what it actually contained.

discovery: fix docstring of `outgoing` class Also, introduce a more correct name `ancestorsof` for what was named `missingheads` before. For now, we just forward `ancestorsof` to `missingheads` until all users are changed. There were some mistakes in the old docstring / name: * `missingheads` (new name: `ancestorsof`) contains the revs whose ancestors are included in the outgoing operation. It may contain non-head revs and revs which are already on the remote, so the name "missingheads" is wrong in two ways. * `missing` contains only ancestors of `missingheads`, so not *all nodes* present in local but not in remote. * `common` might not contain all common revs, e.g. not some that are not an ancestor of `missingheads`. It seems like the misleading name have fostered an actual bug (issue6372), where `outgoing.missingheads` was used assuming that it contains the heads of the missing changesets.

discovery: weaken claim about returned common heads if ancestorsof are given As the test case shows, the claim is not true in general.

cext: remove unused variables Differential Revision: https://phab.mercurial-scm.org/D8760

phabupdate: allow resigning from revisions Differential Revision: https://phab.mercurial-scm.org/D8756

phabupdate: allow revisions to be commandeered Differential Revision: https://phab.mercurial-scm.org/D8755

phabupdate: allow revisions to be reopened Differential Revision: https://phab.mercurial-scm.org/D8754

phabupdate: allow revisions to be marked "closed" (Yes, the transaction name and final state in the comment here do differ.) Differential Revision: https://phab.mercurial-scm.org/D8753

phabupdate: allows revisions to be marked "request-review" Differential Revision: https://phab.mercurial-scm.org/D8752

phabupdate: allow revisions to be marked with "plan changes" Differential Revision: https://phab.mercurial-scm.org/D8751

status: match category text in the option description The ! category in the main status help text is defined as "missing", so use the same text for the help text of --delete. Differential Revision: https://phab.mercurial-scm.org/D8759

purge: classify as a "working directory management" command in help It seems to me that `hg purge` is clearly a "working directory management" command and not a "repository management" command. The working copy is all that's affected, after all; the repo is not affected at all. Differential Revision: https://phab.mercurial-scm.org/D8757

extensions: make `hg help extensions` list disabled extensions with PyOxidizer `setup.py` has a mechanism for generating a list of bundled extensions and their documenation and putting it in a `hgext/__index__.py` file. That file is then read from `extensions.py`, which makes `hg help extensions` work in py2exe binaries. This patch makes it so `setup.py` produces the `hgext/__index__.py` file also when called by PyOxidizer. Thanks to Matt Harbison for pointing out the existence of `__index__.py`! Differential Revision: https://phab.mercurial-scm.org/D8758