sort-revset: introduce a `random` variant This new `sort` variant allows to shuffle any revset. It also allow for randomly picking element using `first`.

perf: properly process formatter option in perf::unbundle Otherwise, the options are not understood.

perf: quiet stdout output in perf::unbundle There a lot of repetitive bundle application message we do not care about.

perf: quiet stderr output in perf::unbundle There a lot of repetitive transaction message we do not care about.

bisect: avoid adding irrelevant revisions to bisect state When adding new revisions to the bisect state, it only makes sense to add information about revisions that are under consideration (i.e., those that are topologically between the known good and bad revisions). However, if the user passes in a revset (e.g., '!merge()' to exclude merge commits), hg will resolve the revset first and add all matching revisions to the bisect state (which in this case would likely be the majority of revisions in the repo). To avoid this, revisions should only be added to the bisect state if they are between the good and bad revisions (and therefore relevant to the bisection). -- Here are the results of some performance tests using the `mozilla-central` repo (since it is one of the largest freely-available hg repositories in the wild). These tests compare the performance of a locally-built `hg` before and after application of this series. Note that `--noupdate` is passed to avoid including update time (which should not vary across cases). Setup (run between each test): $ hg bisect --reset $ hg bisect --noupdate --bad 56c3ad4bde5c70714b784ccf15d099e0df0f5bde $ hg bisect --noupdate --good 57426696adaf08298af3027fa77486fee0633b13 Test using a revset that returns a very large number of revisions: $ time hg bisect --noupdate --skip '!merge()' > /dev/null Before: real 0m9.398s user 0m9.233s sys 0m0.120s After: real 0m1.513s user 0m1.425s sys 0m0.052s Test using a revset that is expensive to compute: $ time hg bisect --noupdate --skip 'desc("Bug")' > /dev/null Before: real 0m49.853s user 0m49.580s sys 0m0.243s After: real 0m4.120s user 0m4.036s sys 0m0.048s

bisect: limit ancestors to revs topologically between good and bad revs Previously, when constructing its dict of revisions to their ancestors, bisect would populate the dict with ALL of the descendents of the good set, which is a bit silly because it is impossible for a revision that is a descendent of the minimum known bad revision to be the first bad rev. Instead it makes more sense to limit the revisions to just those topologically between the good and bad.

bisect: bypass changectx when translating revs to nodes When resolving the revset given by the user into node hashes, use the changelog to perform the translation rather than the repo object. This avoids the overhead of constructing a changectx which is immediately discarded.

rhg: make [rhg status -v] work when it needs no extra output Add support for verbose [status] when no extra output is actually needed. This makes it so that [rhg status] is actually useful when [tweakdefaults] is true. (since tweakdefaults implies verbose status)

perf: introduce a benchmark for delta-find That part is responsible of serious slowdown in some `hg pull/unbundle` case. So lets add a way to benchmark it.

debug-delta-find: introduce a quiet mode In quiet mode, we only print the summary of the search and skip the individual steps.

phase-shelve: also capture the state of shelve prior to unshelve

phase-shelve: Add test for shelve technique config

phase-shelve: Implement a 'shelve.store' experimental config Accepts "internal" or "strip", indicating how the shelved changes are stored. Defaults to "internal", retaining compatibility for repos with "internal-phase" already enabled.

phase-shelve: Extract function for _target_phase

phase-shelve: expand the tests to capture use-cases supported

phase-shelve: honor and prefer obs shelves for existence and modified time

phase-shelve: read patch details from a (possibly internal) node in the repo

phase-shelve: Extract function for _optimized_match for re-use

obsstore: break the repo → obstore → repo loop This should help the garbage collector to do its job. On repository with many markers, the memory pressure from the obsstore can get quite serious.

relnotes: mention chg behavior change when given --cwd

dispatch: change cwd when loading local config Previously, the `_getlocal` function would not correctly load the repo config when given a relative `rpath` and an alternate cwd via the `wd` parameter. Normally when `--cwd` is specified, hg changes to the given directory before attempting to load the local config (and therefore does not specify a `wd`). The only time the function is called with `wd` set is when hg is running as a command server (e.g., with chg), in which case each forked worker process will attempt to configure itself via `_getlocal` before responding to the client. When given a relative repo path, the worker fails to load the repo config, detects a config mismatch with the client, and enters a redirect/respawn loop. To fix this, we can simply change to the desired working directory during config loading. (Note that simply concatenating `wd` and `rpath` won't work in all cases. The repo path could be something more complicated than a simple relative path, such as a `union:` repo.)

contrib: add support for rhel9

packagelib: use python3 by default

tests: work around libmagic bug in svn subrepo tests libmagic 5.40 introduced a bug [1] wherein ASCII text files with fewer than 3 distinct character values would be reported as binary data rather than as text. This bug was later fixed in version 5.41 [2]. SVN uses libmagic to determine the MIME type of added files with missing or unknown extensions [3]. This results in test failures on systems with libmagic 5.40 installed: $ echo a > a $ svn add a - A a + A (bin) a A simple workaround is to change the test file's content to include 3 distinct ASCII values (including the terminating newline). [1] https://bugs.astron.com/view.php?id=180 [2] https://bugs.astron.com/view.php?id=261 [3] https://svnbook.red-bean.com/en/1.8/svn.advanced.props.html#idm2649

revlog: make _partialmatch fail fast on almost-hex inputs Before this change, resolving a revision like [0123456789^] on a large repo can take multiple seconds because: - hg does not realize this is a revset, so it tries various things, including _partialmatch(b"0123456789^") - after the rust lookup fails, it falls back to pure hg - pure hg takes all-but-last chars and converts them to binary, which *succeeds*, so it does the expensive part.

perf-unbundle: add a perf command to time the unbundle operation Check documentation for details.

perf-bundle: accept --type argument

perf-bundle: accept --rev arguments This is fairly standard nowaday.

perf-bundle: add a new command to benchmark bundle creation time

bundle: introduce a --exact option I have been wanting this options for a long time.

bundlespec: add documentation about existing option We have some documentation, lets make it complete.

setup: use the full executable manifest from `python.exe` The manifest embedded by the build process (before the string here is added) already accounts for the `<requestedExecutionLevel level="asInvoker" ...>` setting. (Note that the PyOxidizer build is missing this, so it will likely trigger the UAC escalation prompt on each run.) However, using `mt.exe` to merge the fragment with what is already in the manifest seems to strip all whitespace, making it unreadable. Since Mercurial can be run via `python.exe`, it makes sense that we would have the same manifest settings (like the supported OS list), though I'm unaware of any functionality this enables. It also has the nice effect of making the content readable from a resource editor. The manifest comes from python 3.9.12. Note that this seems to strip the `<?xml ... ?>` declaration when viewed with ResourceHacker 5.1.7, but this was also the state of things with the previous commit, and `mt.exe "-inputresource:hg.exe;#1" -out:extracted` does contain the declaration and the BOM in both cases. No idea why this differs from other executables.

setup: unconditionally enable the `long-paths-support` option on Windows I don't see anything talking about why this was experimental in the first place, but maybe it was concern about the level of python2 support for it. But now, both `python.exe` and the PyOxidizer build of `hg.exe` have a manifest that enables it, so leaving it off would mean some Mercurial installations could operate on a repo with long paths, and others couldn't. Note that only the wide character functions (XxxW) will have the length restriction lifted. Sadly, distutils applies `/MANIFEST:EMBED` to the linker in a way that can't easily be turned off, so we can't use `/MANIFESTFILE` with `extra_preargs` on `link_executable`. Fortunately, the compiler object provides a path to the `mt.exe` it found during initialization, because the previous incarnation seems to have assumed it is being run within an activated Visual Studio environment. That causes MSYS builds to fail, and probably would have broke the CI environment.

setup: stop shadowing the builtin `dir` symbol I hit this when debugging what's available on the compiler.

subrepo: avoid opening console window for non-native subrepos on Windows Prevent annoying command prompt windows popping up when using TortoiseHG with Git and SVN subrepos by passing creationflags=subprocess.CREATE_NO_WINDOW to subprocess.Popen.

ci: bump pytype to 2022.03.29 This is as far as we can go without running into issues with the vendored `attr` package. I tried updating that to the latest, and not only did it not fix the issue, but test-util.py failed due to some poking at `attr` internals that apparently is no longer valid. The `libcst` package is now pinned to what I have locally because trying to install the latest (0.4.7) complains that it can't find the Rust compiler. We should probably use a requirements file instead (and/or figure out why it can't find the Rust compiler), but I don't feel like dealing with another side quest.

typing: suppress a few attribute errors in url.py These are newly detected by pytype 2022.03.21. Not sure what is going on here- `realhostport` and `headers` are added outside of the constructor, so that makes sense. But PyCharm also thinks the private methods don't exist, though when clicking through the class hierarchy, it shows in the py3.9 source code.

typing: suppress a few pyi-errors with more recent pytype Not sure what's going on here, but these were flagged with pytype 2022.03.21. We can't update to something much more recent, because newer versions complain about various `attr` uses.

sslutil: another use proper attribute to select python 3.7+ The previous attribute was python 3.6+, but guarded a python 3.7+ block Using the correct attribute avoids: + File "/tmp/hgtests.bc0_uk2d/install/lib/python/mercurial/sslutil.py", line 577, in wrapserversocket + sslcontext.minimum_version = ssl.TLSVersion.TLSv1_1 + AttributeError: module 'ssl' has no attribute 'TLSVersion'

sslutil: use proper attribute to select python 3.7+ The previous attribute was python 3.6+, but guarded a python 3.7+ block. Using the correct attribute avoids: File "/usr/lib64/python3.6/site-packages/mercurial/sslutil.py", line 334, in wrapsocket sslcontext.minimum_version = ssl.TLSVersion.TLSv1_1 AttributeError: module 'ssl' has no attribute 'TLSVersion'

branching: merge stable into default

branching: merge stable into default

lfs: fix interpolation of int and %s in an exception case Seen in the wild in a server log when MS antivirus was quarantining a file on the client side.

tests: catch "Can't assign requested address" in test-https.t (issue6726)

tests: add another variation of EADDRNOTAVAIL message (e.g. from NetBSD)

configitems: change the `verify.skipflags` default value to avoid a py3 crash The revlog and LFS modules use various `&` and `&=` operations with this value, which no longer treats `None` as 0. Since nothing cares if it was actually set in the config or not, just default to 0 for simplicity.

windows: gracefully handle when the username cannot be determined This assumes implementation details, but I don't see any other way than to check the environment variables ourselves (which would miss out on any future enhancements that Python may make). This was originally reported as https://foss.heptapod.net/mercurial/tortoisehg/thg/-/issues/5835.

shelve: do not add the dirstate backup to the transaction Otherwise the transaction will properly clean up its mess on abort… deleting the backup in the process. This break with dirstate-v2 that has more file than just the dirstate. The dirstate itself is full of various exception and is "fine" when using dirstate-v1.

Added signature for changeset dbdee8ac3e3f

Added tag 6.2.3 for changeset dbdee8ac3e3f

heptapod-ci: use shell script in pytype step

tests: migrate the pytype test to a shell script for easier CI processing There have been recent hangs and timeout, but it's hard to debug because the *.t test redirects output to a file and only prints it if `pytype` actually exits. This shell script can be run directly by CI, and will allow more flexibility to try to cache and restore type stubs for further speed increases.

rhg: fix bugs around [use-dirstate-tracked-hint] and repo auto-upgrade This makes two changes: - make rhg support the [dirstate-tracked-key-v1] requirement. I believe rhg never changes the tracked file set, so it's OK that it doesn't have any logic for writing this file. - fix the name of [format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories] config option in rhg, which makes rhg actually honor the auto-upgrade. These two issues cancelled each other out in tests (auto-upgrade was happening because [dirstate-tracked-key-v1] forced the fallback, not because of the config), which is I think why they went unnoticed earlier.

tests: fix the flaky test test-logtoprocess.t The main change is that we're waiting for the [touched] file to appear for 5 seconds instead of 0.1 seconds. Also, instead of implementing wait-on-file from scratch, we use the existing one from testlib/ that works well.

packaging: update dulwich to drop the certifi dependency on Windows The presence of `certifi` causes the system certificate store to be ignored, which was reported as a bug against TortoiseHg[1]. It was only pulled in on Windows because of `dulwich`, which was copied from the old TortoiseHg install scripts, in order to support `hg-git`. This version of `dulwich` raises the minimum `urllib3` to a version (1.25) that does certificate verification by default, without the help of `certifi`[2]. We already bundle a newer version of `urllib3`. Note that `certifi` can still be imported from the user site directory, if installed there. But the installer no longer disables the system certificates by default. [1] https://foss.heptapod.net/mercurial/tortoisehg/thg/-/issues/5825 [2] https://github.com/jelmer/dulwich/issues/1025

tests: fix tar invocation, to address issue 6740

relnotes: add 6.2.1 and 6.2.2

Added signature for changeset b5c8524827d2

Added tag 6.2.2 for changeset b5c8524827d2

dirstate-v2: no longer register the data-file during transaction If the data file change during the transaction, we cannot truncate it. The content of the file itself is fine as it will get backed up at the same time as the docket. Leaving the trailing data at the end of failed transaction is fine. The dirstate-v2 format supports it. The dead data will simply we written over if necessary.

fsmonitor: use new dirstate APIs (issue6728) On top of fixing fsmonitor, it moves one more "old API" use to the new one. This needs very verbose code to save a few function calls that are very expensive in Python.

dirstate-v2: backup the data file during the transaction (issue6730) If we backup of the docket, without doing a backup of the data file, we highly risk restoring a docket pointing to a missing file in the future. So we now backup the data-file alongside the docket.

dirstate-v2: display a possible issue with transaction If we backup the dirstate without the data file, we can end up in an inconsistent state of the transaction is rolled back.

test-dirstate: do not get out of the test directory It looks like we were doing one `cd ..` too many.

rust-matchers: fix behavior of `IncludeMatcher` with multiple includes This change adds a test for this fix as well as an additional test case that was useful in debugging this behavior.

tests: improve portability by no longer using the flag [tar --force-local] A different way of making sure the path is not interpreted as a URL is to never give this path to [tar], instead making tar read from stdin.

tests: remove flakiness in a time-dependent test

tests: remove flakiness in test-nointerrupt.t The problem was that the reaction to the signal was racing against the completion of the command. Since reaction to the signal is to print a line of warning, we can fix this by waiting for that warning to appear before allowing the command to complete.

automation: set PATH when building on Windows Sometime in the 6.2 release cycle the Windows building automation broke. Building the wheel and even PyOxidizer based installers now fails with: ``` Exception: PowerShell execution failed: error: subprocess-exited-with-error Getting requirements to build wheel did not run successfully. exit code: 1 [1 lines of output] Unable to find a working hg binary to extract the version from the repository tags [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. ``` I have a hunch this is a regression from upgrading pip in 1c00777702da, but I haven't verified this. It may not be, as PyOxidizer has its own bundled Python/pip. So maybe it is something in `setup.py`.

contrib: update Mercurial install in bootstrap environment

automation: transition to Windows Server 2022 Let's keep our Windows build environment modern by upgrading to the latest OS. As part of the upgrade, we pick up a migration to EC2Launch Version 2. This has a different config mechanism. So we need to port how we manage the administrator password. As part of migrating to the new YAML/JSON config file mechanism, we move the code to the powershell script that is run when the instance first launches. This ensures that the config is retained during the reboot we perform as part of building the Windows AMI. The motivation for this is I'm currently unable to build the Windows 2019 AMI due to an issue installing OpenSSH. This _just works_ on Windows Server 2022. I have no clue what the root cause is. I think it might have something to do with Microsoft not publishing the files in the right location. Differential Revision: https://phab.mercurial-scm.org/D12630

automation: refresh requirements I'm hitting errors installing the old version of cffi due to an apparent issue where older versions of cffi aren't compatible with the modern Clang I'm using. So let's upgrade packages to unbreak things and to keep things modern. Differential Revision: https://phab.mercurial-scm.org/D12629

rust-status: ignored directories are now correctly only listed if opted into This fixes the behavior of `hg purge` removing empty ignored directory even without `--all` or `--ignored`.

test: show how purge removes ignored directories Apparently the rust code path removes ignored directories even though the pure code path doesn't. Show this in tests.

rust: bump to memmap2 0.5.3, micro-timer 0.4.0, and crossbeam-channel 0.5.0 The merge in 12adf8c695ed had conflicts in rust/Cargo.lock and rust/hg-core/Cargo.toml . Let's ignore rust/Cargo.lock - it is regenerated. For rust/hg-core/Cargo.toml, stable had dd6b67d5c256 "rust: fix unsound `OwningDirstateMap`" which introduced ouroboros (and dropped stable_deref_trait). Default had ec8d9b5a5e7c "rust-hg-core: upgrade dependencies" which had a lot of churn bumping minimum versions - also patch versions. It is indeed a good idea to bump to *allow* use of latest package. That means that major versions should be bumped for packages after 1.0, and for packages below 1.0 minor versions should be bumped too. But it doesn't work to try enforce a policy of using latest patch by bumping versions at arbitrary times. For good or bad, the merge doesn't seem to have resolved the conflicts correctly, and many of the minor "upgrade dependencies" were lost again. Unfortunately, it also lost the bump of memmap2 to 0.5.3, which is needed for Fedora packaging where 0.4 isn't available. Same with micro-timer bump to 0.4 (which already is used in rhg). crossbeam-channel bump was also lost. This change fixes that regression by redoing these "important" lines of the merge "correctly". I propose this for stable, even though dependency changes on stable branches are annoying.

Added signature for changeset f69bffd00abe

Added tag 6.2.1 for changeset f69bffd00abe

debug-discovery: apply spelling fixes from Raphaël

tree-discovery: fix the request debug output and progress location This is now associated with each request.

debug-discovery: deal with case where common is empty This code was previously confused by case where: `heads_common == {nullid}`

debug-discovery: do not abort on unrelated repositories This is a useful case to consider, so we should not abort in this case. A warning is still issued.

debug-discovery: gather the right number of roundtrips for tree discovery We where not counting the right amount of request before.

debug-discovery: also gather details on tree-discovery queries type This is useful to understand the algorithm.

debug-discovery: properly apply remote filtering in "old" mode Before this change using `--remote-as-revs` with `--old` had no effect and everything was considered as "common", which is really not what we intended.

debug-discovery: fix a typo in the doc The second option should be `--remote-…` as we just talked about `--local-…` already.

packaging: bump dulwich to 0.20.45 I'm told the new dulwich avoids hg-git test failures.

packaging: update keyring on Windows to avoid spurious stacktraces When challenged for a network password, this would spew on Windows before it actually used the stored password: ``` Error initializing plugin EntryPoint(name='libsecret', value='keyring.backends.libsecret', group='keyring.backends'). Traceback (most recent call last): File "keyring.backend", line 198, in _load_plugins init_func = ep.load() File "importlib.metadata", line 77, in load module = import_module(match.group('module')) File "importlib", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1030, in _gcd_import File "<frozen importlib._bootstrap>", line 1007, in _find_and_load File "<frozen importlib._bootstrap>", line 984, in _find_and_load_unlocked ModuleNotFoundError: No module named 'keyring.backends.libsecret' Error initializing plugin EntryPoint(name='macOS', value='keyring.backends.macOS', group='keyring.backends'). Traceback (most recent call last): File "keyring.backend", line 198, in _load_plugins init_func = ep.load() File "importlib.metadata", line 77, in load module = import_module(match.group('module')) File "importlib", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1030, in _gcd_import File "<frozen importlib._bootstrap>", line 1007, in _find_and_load File "<frozen importlib._bootstrap>", line 984, in _find_and_load_unlocked ModuleNotFoundError: No module named 'keyring.backends.macOS' ``` We're kinda threading a needle here because the next version of `keyring` (currently at 23.7.0) requires `importlib-metadata` 3.6+, which PyOxidizer 0.22 doesn't support[1]. [1] https://github.com/indygreg/PyOxidizer/issues/609

mergestate: action name was str Apparently the standard for them is still to use byte strings. Found while looking at something else

sslutil: another use proper attribute to select python 3.7+ The previous attribute was python 3.6+, but guarded a python 3.7+ block Using the correct attribute avoids: + File "/tmp/hgtests.bc0_uk2d/install/lib/python/mercurial/sslutil.py", line 577, in wrapserversocket + sslcontext.minimum_version = ssl.TLSVersion.TLSv1_1 + AttributeError: module 'ssl' has no attribute 'TLSVersion'

sslutil: use proper attribute to select python 3.7+ The previous attribute was python 3.6+, but guarded a python 3.7+ block. Using the correct attribute avoids: File "/usr/lib64/python3.6/site-packages/mercurial/sslutil.py", line 334, in wrapsocket sslcontext.minimum_version = ssl.TLSVersion.TLSv1_1 AttributeError: module 'ssl' has no attribute 'TLSVersion'

git: copy findmissingrevs() from revlog.py to gitlog.py (issue6472)

git: add a missing reset_copy keyword argument to dirstate.set_tracked() Since nothing else in hgext/git supports copies yet, the best I can do is avoid TypeError: set_tracked() got an unexpected keyword argument 'reset_copy'.

git: make sure to fsdecode bookmark names everywhere (issue6723)

Added signature for changeset 094a5fa3cf52

Added tag 6.2 for changeset 094a5fa3cf52

procutil: make stream detection in make_line_buffered more correct and strict In make_line_buffered(), we don’t want to wrap the stream if we know that lines get flushed to the underlying raw stream already. Previously, the heuristic was too optimistic. It assumed that any stream which is not an instance of io.BufferedIOBase doesn’t need wrapping. However, there are buffered streams that aren’t instances of io.BufferedIOBase, like Mercurial’s own winstdout. The new logic is different in two ways: First, only for the check, if unwraps any combination of WriteAllWrapper and winstdout. Second, it skips wrapping the stream only if it is an instance of io.RawIOBase (or already wrapped). If it is an instance of io.BufferedIOBase, it gets wrapped. In any other case, the function raises an exception. This ensures that, if an unknown stream is passed or we add another wrapper in the future, we don’t wrap the stream if it’s already line buffered or not wrap the stream if it’s not line buffered. In fact, this was already helpful during development of this change. Without it, I possibly would have forgot that WriteAllWrapper needs to be ignored for the check, leading to unnecessary wrapping if stdout is unbuffered. The alternative would have been to always wrap unknown streams. However, I don’t think that anyone would benefit from being less strict. We can expect streams from the standard library to be subclassing either io.RawIOBase or io.BufferedIOBase, so running Mercurial in the standard way should not regress by this change. Py2exe might replace sys.stdout and sys.stderr, but that currently breaks Mercurial anyway and also these streams don’t claim to be interactive, so this function is not called for them.

repo-upgrade: avoid a crash when multiple optimisation are specified In Python 3, the type are no longer comparable and this expose the error.

rust: remove excessive calls to `#[timed]` This makes trace output *really* noisy and is only useful in case you want to take a look at a single revlog. This is easy to add back on a case-by-case basis and does not need to stay with the more permanent timers.

rhg: add error message for paths outside the repository when cwd != root This mirrors the Python implementation. The relative path handling should probably be refactored into a util, but it it out of scope for this change.

rust: don't swallow valuable error information This helps when diagnosing corruption, and is in general good practice. The information is here, valuable and can be used easily.

rust: add message to `DirstateV2ParseError` to give some context This is useful when debugging.

py3: stop using deprecated Element.getchildren() method in convert/darcs This has been deprecated since py3.2, and removed entirely in py3.9

py3: fix bytes/unicode issues in convert/darcs - don't check for a binary symbol in globals(), which meant it always thought the module wasn't available - don't pass bytes to stdlib methods - return bytes in getchanges where Mercurial expects to see them

convert: remove old ElementTree import cruft from darcs All the `import elementtree` attempts seem to pre-date py2.5, when it was brought into the standard library, and the manual `cElementTree` fast implementation import has been unnecessary and deprecated since py3.3.

relnotes: add 6.2rc0

Added signature for changeset 288de6f5d724

Added tag 6.2rc0 for changeset 288de6f5d724

branching: merge default into stable

sparse: use the rust code even when sparse is present With rust supporting more matcher types, we can now take this route in the sparse case too.

sparse: directly inline the `set_tracked` and `copy` wrapping core is already aware of sparse, so lets move the handful of line of code that deal with this for the sake of simplicity and explicitness.

spares: clarify some test about merging copies This new output clarify the important part out this merging : we want to be able to record the copy source even it is outside of the sparse profile.

sparse: drop the useless wrapping of `dirstate.set_untracked` The code of the wrapper only act in the case where the file is not tracked, so this has not effect for `untracked`. In addition the message explicitly mention `add` of a file and no test are breaking if we drop this. So we drop this for simplicity and cleanup

sparse: directly inline the `rebuild` wrapping Core is already aware of sparse, so lets move the handful of line of code that deal with it in `dirstate.rebuild` for the sake of simplicity.

sparse: directly inline the `walk` wrapping core is already aware of sparse, so lets move the handful of line of code that deal with it in `dirstate.walk` for the sake of simplicity.

sparse: use None as the sparse matcher value when disabled This create a clear signal for when the feature is unused. We could also create an `alwaysmatcher`, but using None is more explicit, so I went for it.

sparse: start moving away from the global variable for detection of usage Code is now checking if the repository using the sparse feature and that's it. Some code in `debugsparse` still rely on "global" state, as it apply sparse logic before updating the requirement. Cleaning that up is more work that we signed up for, but we could narrow the hack to that specific command.

test: fix test-sparse-revlog output after debugdeltachain change We need to get this test covered by the CI, in the meantime, here is a quick fix.

rust-dirstate: add support for nevermatcher This is in case this ever comes up, it's very easy to support, so might as well do it.

rust-dirstate: add `intersectionmatcher` to the allowed matchers `IntersectionMatcher` is now implemented in Rust.

rust: add IntersectionMatcher This will be used in the upcoming support for sparse checkouts in Rust-augmented status and later in rhg support for sparse checkouts.