verify: make `checkentry` a private method This method is for internal use only.

verify: document the `checkentry` method This method checks various core propertes of a revision. We document inputs, outputs and the checks performed.

verify: add some inline documentation to the top level `verify` method The goal is to clarify each section goal.

verify: explicitly return 0 if no error are encountered Relying on the fact None is treated as 0 by other logics seems smarter than we should be.

verify: minimal documentation for `verifier.verify` I expect the docstring to grow over time, so lets start small.

verify: make the `exc` method private The method is for internal use only.

verify: document the `exc` method Simple method, get simple documentation.

verify: make `err` a private method The method is for internal use only.

verify: document the `err` method Simple method get simple documentation.

verify: make the `warn` method private The method is for internal use only. Let us make that fact clearer.

verify: document the `warn` method This is the first bit of an effort to document and augment the verify code.

uncommit: add flag --allow-dirty-working-copy This adds a flag `--allow-dirty-working-copy` as an alias for the experimental config option `experimental.uncommitondirtydir`. Differential Revision: https://phab.mercurial-scm.org/D6069

uncommit: don't allow dirty working copy with PATH (issue5977) On a dirty PATH, uncommit was working without even setting the config `experimental.uncommitondirtydir` to `True`. Ideally, it should abort as it does for a dirty dir. This patch makes uncommit to require the config option `experimental.uncommitondirtydir` on a dirty PATH. Original patch to evolve extension authored by Dan Villiom Podlaski Christiansen: https://bitbucket.org/octobus/evolve-devel/pull-requests/8/bug-5977-uncommit-dirtiness/diff Differential Revision: https://phab.mercurial-scm.org/D5940

cleanup: remove two bogus test names from python3 list I suspect one of these was a typo from the start, the other appears to have become a .t test at some point. Differential Revision: https://phab.mercurial-scm.org/D6076

revlog: preserve `_lazydelta` attribute in `revlog.clone` The attribute was introduce in 688fc33e105d, Yuya Nishihara pointed out that this preservation was missing. This changeset fixes the preservation and make sure we set the attribute according the modes.

localrepo: explicit `_lock` arguments in `lock` The argument for `_lock` are non-trivial, having them passed explicitly makes thing clearer in my opinion. This is a Gratuitous change, I expect it will save me (and others) time in the future.

inno: remove w9xpopen.exe w9xpopen.exe is a utility program shipped with Python <3.4 (https://bugs.python.org/issue14470 tracked its removal). The program was used by subprocess to wrap invoked processes on Windows 95 and 98 or when command.com was used in order to work around a redirect bug. The workaround is only used on ancient Windows versions - versions that we shouldn't see in 2019. While Python 2.7's subprocess module still references w9xpopen.exe, not shipping it shouldn't matter unless we're running an ancient version of Windows. Python will raise an exception if w9xpopen.exe can't be found. It's highly unlikely anyone is using current Mercurial releases on these ancient Windows versions. So remove w9xpopen.exe from the Inno installer. .. bc:: The 32-bit Windows Inno installers no longer distribute w9xpopen.exe. This should only impact people running Mercurial on Windows 95, 98, or ME. Differential Revision: https://phab.mercurial-scm.org/D6068

inno: stop shipping pywin32 Ancient versions of Mercurial relied on pywin32 and I suspect that's why we have this dependency. We also ship the "keyring" package, which has a dependency on "pywin32-ctypes" (providing the "win32ctypes" package). This is a stripped down version of pywin32 that doesn't have as many dependencies. Since we don't have a dependency on pywin32 and since pywin32 is a bit annoying to package, let's get rid of it. With this change, py2exe no longers picks up DLL dependencies on various UCRT DLLs (because we no longer have a .pyd file beloning to pywin32 which was pulling them in). So, we were able to remove code in support of the UCRT DLLs. .. bc:: The Windows Inno installers no longer ship the pywin32 package. This package was being bundled for historical reasons. Mercurial stopped using pywin32 several years ago and the disappearance of this package should not have any meaningful impact. Differential Revision: https://phab.mercurial-scm.org/D6067

inno: script to automate building Inno installer The official Inno installer build process is poorly documented. And attempting to reproduce behavior of the installer uploaded to www.mercurial-scm.org has revealed a number of unexpected behaviors. This commit attempts to improve the state of reproducibility of the Inno installer by introducing a Python script to largely automate the building of the installer. The new script (which must be run from an environment with the Visual C++ environment configured) takes care of producing an Inno installer. When run from a fresh Mercurial source checkout with all the proper system dependencies (the VC++ toolchain, Windows 10 SDK, and Inno tools) installed, it "just works." The script takes care of downloading all the Python dependencies in a secure manner and manages the build environment for you. You don't need any additional config files: just launch the script, pointing it at an existing Python and ISCC binary and it takes care of the rest. The produced installer creates a Mercurial installation with a handful of differences from the existing 4.9 installers (produced by someone else): * add_path.exe is missing (this was removed a few changesets ago) * The set of api-ms-win-core-* DLLs is different (I suspect this is due to me using a different UCRT / Windows version). * kernelbase.dll and msasn1.dll are missing. * There are a different set of .pyc files for dulwich, keyring, and pygments due to us using the latest versions of each. * We include Tcl/Tk DLLs and .pyc files (I'm not sure why these are missing from the existing installers). * We include the urllib3 and win32ctypes packages (which are dependencies of dulwich and pywin32, respectively). I'm not sure why these aren't present in the existing installers. * We include a different set of files for the distutils package. I'm not sure why. But it should be harmless. * We include the docutils package (it is getting picked up as a dependency somehow). I think this is fine. * We include a copy of argparse.pyc. I'm not sure why this was missing from existing installers. * We don't have a copy of sqlite3/dump.pyc. I'm not sure why. The SQLite C extension code only imports this module when conn.iterdump() is called. It should be safe to omit. * We include files in the email.test and test packages. The set of files is small and their presence should be harmless. The new script and support code is written in Python 3 because it is brand new and independent code and I don't believe new Python projects should be using Python 2 in 2019 if they have a choice about it. The readme.txt file has been renamed to readme.rst and overhauled to reflect the existence of build.py. Differential Revision: https://phab.mercurial-scm.org/D6066

setup: exclude some internal UCRT files When attempting to build the Inno installer locally, I was getting several file not found errors when py2exe was crawling DLL dependencies. The missing DLLs appear to be "internal" DLLs used by the Universal C Runtime (UCRT). In many cases, the missing DLLs don't appear to exist on my system at all! Some of the DLLs have version numbers that appear to be N+1 of what the existing version number is. Maybe the "public" UCRT DLLs are probing for version N+1 at load time and py2exe is picking these up? Who knows. This commit adds the non-public UCRT DLLs as found by py2exe on my system to the excluded DLLs set. After this change, I'm able to produce an Inno installer with an appropriate set of DLLs. Differential Revision: https://phab.mercurial-scm.org/D6065

setup: include additional packages in py2exe distribution I'm attempting to reproduce the Inno installers on my local machine. As part of auditing differences between installer output, I noticed that the existing Inno installers include various 3rd party packages. There is no mention of this in the build instructions nor on the wiki. This must be something that is done by the installer producer. This commit teaches setup.py to include these 3rd party packages in py2exe's library. After this change, I am able to produce Inno installers that have a nearly identical set of Python modules. It's worth noting that pywin32 is included even though it probably shouldn't be. But including it is necessary in order to achieve parity with existing Inno installers. Differential Revision: https://phab.mercurial-scm.org/D6064

setup: define build_doc command Currently, various processes for packaging Mercurial state to manually invoke `make -C doc` in order to generate the documentation. This Makefile merely invokes `gendoc.py` and `runrst` to produce man pages and HTML pages. Not all environments may have the ability to easily run Makefiles. Windows is notably in this set. This commit ports the man page and HTML generation logic from doc/Makefile to setup.py. We introduce a new build_doc command which generates documentation by calling gendoc.py and runrst. The documentation can now be built via pure Python by running `python setup.py build_doc`. We don't implement dependency tracking because IMO it is more effort than it is worth. We could potentially remove the duplicated functionality in doc/Makefile. But I'm not sure what all is depending on it. So I plan to keep it around. # no-check-commit because forced foo_bar function names Differential Revision: https://phab.mercurial-scm.org/D6063

inno: remove references to pywin32 According to the commit message for 0c35bb01a1195, pywin32 was removed in Mercurial 1.8! Differential Revision: https://phab.mercurial-scm.org/D6062

inno: remove cacerts.pem from documentation The inno distribution no longer includes cacert.pem as of ca1ad8ef38be22 (April 2015). The docs were never updated. Differential Revision: https://phab.mercurial-scm.org/D6061

inno: replace add_path.exe with a Pascal script While attempting to build the Inno installer, I was unable to find a copy of add_path.exe from the source site previously listed in the docs. Some quick Googling revealed that achieving this functionality in native Pascal scripts seems to be preferred these days. This commit vendors "Modify Path" (fetched from https://www.legroom.net/software/modpath) and plugs it into our Inno config file per its instructions. The existing Inno installer appears to only modify PATH for the current user (as opposed to at the system level). I've maintained this behavior with Modify Path. Although it would be trivial to change or add checkboxes to control the behavior. I'll leave this as a follow-up. Differential Revision: https://phab.mercurial-scm.org/D6060

inno: move inno installer files to contrib/packaging/inno Let's isolate the inno installer files to their own directory so the separation between things is clearer. This required adjusting a few relative paths and references to the old directory. Differential Revision: https://phab.mercurial-scm.org/D6059

py3: add a new passing test found by buildbot Differential Revision: https://phab.mercurial-scm.org/D6073

tests: make test-status.t compatible with test-check-module-imports.t Otherwise the later fails on Python 3. Differential Revision: https://phab.mercurial-scm.org/D6072

py3: convert KEY_PRESSED value to bytes in crecord.py This was a str before. Differential Revision: https://phab.mercurial-scm.org/D6071

hghave: skip emacs tests on 24.3 and earlier Turns out with-eval-after-load is new in 24.4. Differential Revision: https://phab.mercurial-scm.org/D6074

py3: use bytes instead of str in isinstance() We use bytes everywhere. Differential Revision: https://phab.mercurial-scm.org/D6070

server: allow customizing the default repo filter hgweb has the (undocument) configuration option web.view that allows restricting visible revisions to immutable. This is useful for serving the same storage as publishing and non-publishing repo. Add the new server.view option to serve the same purpose by changing the default behavior of `getdispatchrepo`. Drop the hard-coded 'served' filter in the batch handler of v1 of the wire proto, this is a left-over from the days before `getdispatchrepo` existed. Differential Revision: https://phab.mercurial-scm.org/D5946

py3: convert filtername to str if it's None I have not called pycompat.bytestr() and rather converted the value there because I am starting to get concerned about the function call overhead of all this bytes to str or vice versa convert functions. Differential Revision: https://phab.mercurial-scm.org/D6042

walkfilerevs: rename filerevgen() to filerevs() since it's not a generator Differential Revision: https://phab.mercurial-scm.org/D6053

global: use raw string for setlocale() argument Otherwise Python 2 will coerce a unicode to str, which fails on HGUNICODEPEDANTRY=1. Differential Revision: https://phab.mercurial-scm.org/D6052

encoding: use raw strings for encoding arguments This prevents the internals of Python from coercing a unicode to str on Python 2 and makes tests run with HGUNICODEPEDANTRY=1 a lot happier. Differential Revision: https://phab.mercurial-scm.org/D6051

revsetlang: use sysbytes() instead of blind encode() Otherwise we will call str.encode() on Python 2, which is wrong. sysbytes() does encode('utf-8') on Python 3. But the source is guaranteed ASCII, so it shouldn't matter. With this change, `hg` now runs with `HGUNICODEPEDANTRY=1` set. However, several tests are failing. Differential Revision: https://phab.mercurial-scm.org/D6050

global: use raw strings for namedtuple() Otherwise Python 2 will attempt to coerce unicode to str, which we don't want. Differential Revision: https://phab.mercurial-scm.org/D6049

attr: don't attempt to .encode() a str on Python 2 Otherwise it coerces automatically. Differential Revision: https://phab.mercurial-scm.org/D6048

procutil: use a raw string for module name Otherwise Python 2 will coerce unicode to str. Differential Revision: https://phab.mercurial-scm.org/D6047

global: use raw strings for __slots__ Otherwise Python 2 will coerce unicode to str at module load time. We don't like automatic string coercions. Differential Revision: https://phab.mercurial-scm.org/D6046

absorb: run cleanupnodes() within transaction also when not using obsmarkers scmutil.cleanupnodes() schedules stripping to be done after the current transaction, so we can safely run it within the transaction. This also means that the phase will be updated within the transaction, which I believe means that the initial (possibly incorrect) phase will not visible. Differential Revision: https://phab.mercurial-scm.org/D6037

py3: pass a str to getpass.getpass() Otherwise I see `password: b''` on the prompt. # skip-blame because just prefix Differential Revision: https://phab.mercurial-scm.org/D6041

py3: port things from chgserver.py I have installed mercurial on my personal laptop using Python 3.7. I also have hg aliased to chg. Before this commit, `hg version` didn't work. After this patch, things are better and now chg works. Differential Revision: https://phab.mercurial-scm.org/D6040

py3: make sure return value of posix.groupname() is bytes Differential Revision: https://phab.mercurial-scm.org/D6039

contrib: make check-code.py check code fragments embedded in test scripts

contrib: add line offset information to file check function of check-code.py This is a part of preparation to apply checking with check-code.py on code fragments embedded in *.t test scripts. This information will be useful to show correct line number in an actual file for errors detected in code fragments embedded in *.t test scripts.

contrib: change return value of file checking function of check-code.py This is a part of preparation to apply checking with check-code.py on code fragments embedded in *.t test scripts. After this patch, caller of _checkfiledata() can count number of errors in each code fragments of an actual file. This will be useful to share --per-file limitation by all embedded code fragments.

contrib: factor out actual error check for file data of check-code.py This is a part of preparation to apply checking with check-code.py on code fragments embedded in *.t test scripts. Newly added _checkfiledata() will be useful to apply checks on code fragments embedded in *.t test scripts.

contrib: refactor preparation logic for patterns of check-code.py This is a part of preparation to apply checking with check-code.py on code fragments embedded in *.t test scripts. Before this patch, preparation logic in _preparepats() of check-code.py is not reusable. It can handle only module global list "checks". This patch splits preparation logic into small internal functions, and add the loop to invoke them, in order to increase reusability of the logic. "c[-2]" is equivalent to "c[3]" for "checks". This patch uses the former, because it will be more reusable for subsequent patch than the latter.

contrib: split pypats list in check-code.py This is a part of preparation to apply checking with check-code.py on code fragments embedded in *.t test scripts. Ideally, all patterns in "pypats" before this patch should be applied on not only normal *.py files but also code fragments embedded in *.t test scripts. But fixing test scripts for some patterns requires many changes, and has less profit than effort. Therefore, this patch splits pypats list into two below: - commonpypats, which are applied on all (= including code fragments embedded in *.t test scripts) *.py files - pypats, which are applied only on normal *.py

tests: remove useless line wrapping in a code fragment embedded in test script This is a part of preparation to apply checking with check-code.py on code fragments embedded in *.t test scripts. This revision avoids error of check-code.py below. Use () to wrap long lines in Python, not \

storage: introduce a `revlog.reuse-external-delta` config This option goes a bit further and provides a way to get the same behavior as the `re-delta-all` optimisation from `hg debugupgraderepo`. The effect of the option is a bit hard to test as we do not have multiple diff algorithm at hand. However, we at least make sure the code path run.

storage: introduce a `revlog.reuse-external-delta-parent` config As pointed in c59987ab96b4, we had no simple way to get a client to not blindly reuse the delta parent from a bundle. Instead one had to rely on a side effect of the deprecated `format.generaldelta` configuration. We introduce an explicit `revlog.reuse-external-delta-parent` configuration option (default to True) to control this behavior. If the option is not set, `format.generaldelta` still control this behavior. To test the new option, we convert a couple of place where `generaldelta` have been used for its side effects.

merge with stable

py3: convert return values of inspect.getabsfile() to bytes It's weird that python docs for inspect does not mention getabsfile(). Differential Revision: https://phab.mercurial-scm.org/D6033

py3: add two new passing tests found by buildbot Differential Revision: https://phab.mercurial-scm.org/D6032

py3: make contrib/debugshell.py work with Python 3 I changed default mercurial installation of my personal laptop to one installed with python 3.7. debugshell is one of the extension which I have enabled and it was failing. This patch makes debugshell works with Python 3. I found that chg does not work with python 3. Differential Revision: https://phab.mercurial-scm.org/D6031

absorb: let scmutil.cleanupnodes() take care of setting phase Differential Revision: https://phab.mercurial-scm.org/D6036

absorb: use scmutil.cleanupnodes() also when obsmarkers are disabled A side-effect of this is the new warning in the test case, but the warning is valid, so I don't think that's a problem. Differential Revision: https://phab.mercurial-scm.org/D6035

absorb: use scmutil.cleanupnodes() so operation gets set The operation is useful for e.g. `hg obslog` output. Differential Revision: https://phab.mercurial-scm.org/D6034

test: follow-up on 1c4d6ab2ecb8, stabilize test-remotefilelog-bgprefetch.t In 1c4d6ab2ecb8, I've added some sleeps after about half of the calls to `hg debugwaitonrepack` but it seems the other calls are also flaky as catched by our CI: https://ci.octobus.net/job/MercurialPy2/299/console. Add sleeps after all calls in order to be safe.

tests: add more wildcards to test-extdiff.t This test has been flakey recently on Windows, but it appears to be the same scenario as 88d4477ac4f6.

branchmap: prevent reading the file twice through different iterators Otherwise, test-static-http.t breaks. Differential Revision: https://phab.mercurial-scm.org/D6028

remotefilelog: fix format str, blobsize isn't always a #, can be "(missing)" Differential Revision: https://phab.mercurial-scm.org/D6025

remotefilelog: do not specify an explicit version for repack Differential Revision: https://phab.mercurial-scm.org/D6024

test: generate the `test-sparse-revlog` artifact when slow-test is allowed The `test-sparse-revlog.t` logic requires a large bundle to be generated. This bundle can be reused from one run to the next but its initial generation is slow. With this patch, if the bundle is missing and slow tests are permitted, the bundle will be generated during the test run. This should ensure that CI run this test.

runtest: also update slow test timeout during `#if` clauses For a `#if slow` test to be useful, we need the test timeout to be increased. Without this, the slow section would likely be killed before it finish.

runtest: move slow timeout process earlier in the `_hghave` method Before this changesets, early returns might prevent this logic to apply. It seem safer to run it sooner.

runtest: extract the logic that update timeout for slow tests We want to use the "slow" test logic not only for "#require" clauses but also in "#if" clauses. For this to be useful we need the logic to bump the timeout in at least two spots. The first step it to factor it out.

tests: increase timeout for slow test Test case `test-sparse-revlog.t` need some artifact (a bundle) build before it can run. The artifact is expensive to build, but can be reused from one run to the other. We are about to update that test to make the artifact building automatic if `--allow-slow-tests` is passed. However, we need a bump the timeout a bit to make sure the artifact building as time to finish. We could maybe teach run-tests.py how to directly handle such artifacts. However since there is only one of them for now, this seems premature. There are also some room to speed up the bundle creation for test-sparse-revlog.t

merge with stable

rewriting: add an option for rewrite commands to use the archived phase Using the archived phase for cleanup provide the same effect than stripping, but in a faster, append-only way. We keep the feature experimental for now until it gets a bit more testing.

strip: introduce a soft strip option This is the first user-accessible way to use the archived phase introduced in 4.8. This implements a feature discussed during the Stockholm sprint, using the archived phase for hiding changesets. The archived phase behaves exactly as stripping: changesets are no longer visible, but pulling/unbundling them will make then reappear. The only notable difference is that unlike hard stripping, soft stripping does not affect obsmarkers. The next changeset will make use of the archived phase for history rewriting command. However, having a way to manually trigger the feature first seems a necessary step before exposing users to this phase; there is a way to un-archived changesets (unbundling), so there must be a way to archive them again. Adding a flag to strip is a good way to provide access to the feature without taking a too big risk on the final UI we want. The flag is experimental so it won't be exposed by default. Using the archived phase is faster and less traumatic for the repository than actually stripping changesets.

branchcache: move loading of branch names and nodes into it's own function This will help me in implementing lazy loading of the branchcache in upcoming patches. Differential Revision: https://phab.mercurial-scm.org/D6023

bundle2: don't send "shared" requirement when cloning from a share Differential Revision: https://phab.mercurial-scm.org/D5985

tests: demonstrate failure when cloning from a share via bundle2 Differential Revision: https://phab.mercurial-scm.org/D5984

mq: disable qrecord during histedit (issue5981) qrecord during histedit may lead to deadlock-like situations. qpop will throw an error on called during histedit even after qrecord-ing those changes. This patch makes qrecord to abort on histedit. Differential Revision: https://phab.mercurial-scm.org/D5997

committablectx: move status-related methods closer together The modified()/added()/removed()/deleted() clearly belong very close to status(). I separated them in committablectx by the new p[12]copies() methods. This brings the close again. Sorry about the churn. Differential Revision: https://phab.mercurial-scm.org/D5996

tests: add test for hg-test-mode emacs code This is just coverage for the compilation-mode support, but that was enough of a hassle that I wanted to have it covered somehow. Test methodology is _extremely_ cargo-culted from the test for compilation-mode in emacs, so I still have no idea what I'm doing. Differential Revision: https://phab.mercurial-scm.org/D6003

hghave: add check for GNU emacs Differential Revision: https://phab.mercurial-scm.org/D6002

contrib: also linkify tracebacks in compilation output when using hg-test-mode Differential Revision: https://phab.mercurial-scm.org/D6001

contrib: add compilation-mode linking for our test output These regular expressions will cause compilation-mode buffers in emacs to link to source when there are check-code errors in the output of a .t test. In the true tradition of this file, I also have no idea what I'm doing. Differential Revision: https://phab.mercurial-scm.org/D6000

diff: make sure we output stat even when --git is not passed (issue4037) (BC) Before this patch, `hg diff --stat` will give an empty output. It will not show the stat information. I debugged and found that the underlying code does not return the diff header and due to that, other code paths fails to parse that as a diff. I looked into why we don't return diff headers in quiet mode and found the behavior is from 8f8bb77d560e70bcc95577e4dfa877df18d876ab which does not have any mention about why it is done. We also show the diff headers in git, so I think it's fine showing diff header in normal diff in quiet mode. Differential Revision: https://phab.mercurial-scm.org/D6007

tests: add test to demonstrate issue4037 `hg diff --stat -q --config diff.git=0` does not output anything whereas it should print the stat. This is a quiet old bug dating to 2013 and looking at code I think it exists it since 2005 or when --stat was introduced. The next patch will fix the bug. Differential Revision: https://phab.mercurial-scm.org/D6006

grep: reuse getrenamedfn() from scmutil My motivation is to reduce uses of filectx.renamed(). Reusing scmutil.getrenamedfn() also means that we get some caching of copy information per file and revision. I don't think that matters for `hg grep` (I doubt it speeds up significantly, and I doubt it wastes significant memory), but I'm not sure. Differential Revision: https://phab.mercurial-scm.org/D6022

templatekw: move getrenamedfn() to scmutil (API) The function is already used by `hg log` (for following renames, not for templates), so it seems it does not belong in templatekw. Differential Revision: https://phab.mercurial-scm.org/D6021

mq: get copy source from context object instead of from filelog This removes dependence on filelog.renamed(). Differential Revision: https://phab.mercurial-scm.org/D6020

mq: slightly modernize by using context object Context objects have existed since mid-2006. Differential Revision: https://phab.mercurial-scm.org/D6019

absorb: migrate to new method for getting copy info Differential Revision: https://phab.mercurial-scm.org/D6018

fix: migrate to new method for getting copy info Differential Revision: https://phab.mercurial-scm.org/D6017

memfilefromctx: migrate to new method for getting copy info Differential Revision: https://phab.mercurial-scm.org/D6016

largefiles: migrate to new method for getting copy info Differential Revision: https://phab.mercurial-scm.org/D6015

commit: migrate to new method for getting copy info Differential Revision: https://phab.mercurial-scm.org/D6014

tests: migrate to new method for getting copy info Differential Revision: https://phab.mercurial-scm.org/D6013

templatekw: migrate to new method for getting copy info Differential Revision: https://phab.mercurial-scm.org/D6012

convert: migrate to new method for getting copy source Differential Revision: https://phab.mercurial-scm.org/D6011

context: move equivalent renamed() implementations to superclass Now that renamed() in workingfilectx and in overlayfilectx are written in terms of copysource(), they are functionally identical and can be reused. Differential Revision: https://phab.mercurial-scm.org/D6010

context: rewrite renamed() in terms of new copysource() where appropriate It's only the filectx for committed files that have the copy source's nodeid easily available; workingfilectx's and overlayfilectx's renamed() simply find the nodeid by looking in the changeset's p1's manifest. Differential Revision: https://phab.mercurial-scm.org/D6009

context: add specialized way of getting copy source file only I'm working on support for storing copy metadata in the changeset instead of the filelog. I don't intend to include the file nodeid there, but most callers don't need that anyway. This patch introduces a method similar to ctx.renamed(), but the new method returns only the source filename, not the nodeid. Subsequent patches will move callers over to this new method. Differential Revision: https://phab.mercurial-scm.org/D6008

changegroup: move non-pruning of non-ellipsis manifests to _prunemanifests() Google has an extension that overrides _prunemanifests() and removes nodes that we fetch using another mechanism. That broke when _prunemanifests() no longer got called. It works again if we move the check for "not self._ellipses" inside _prunemanifests(). Differential Revision: https://phab.mercurial-scm.org/D6004

context: use includematcher when checking dir/file conflicts This is for performance; patternmatcher can't easily interpret its results to make visitchildrenset be the "optimal" set of paths to inspect, but includematcher can. Since there aren't any special patterns being used here, I believe that the two matchers are equivalent. Differential Revision: https://phab.mercurial-scm.org/D5999

tests: change the paths slightly in test-rebase-inmemory.t c/c was a little difficult to understand (and verify that it was the *correct* 'c/' that was being talked about), and it's useful to have multiple directories to prove that we are able to detect this even if there's no files (just a subdirectory) in the immediate directory that's conflicting. Differential Revision: https://phab.mercurial-scm.org/D5998

rust-cpython: using rustext.dagop.headrevs in revlog As with the previous oxidation series, revlog plays the role of the factory, either using its parents function, or passing the index. We include below results of revsetbenchmarks.py taken on the PyPy repository on those of contrib/all-revsets.tx that involve `heads()`. In most of the cases, this seems to be either neutral or an improvement. In the cases where it's actually a bit slower, we suspect that differences in `heads()` performance is actually burried in variance on the incoming revset (probably several orders of magnitude slower). The precheck for filtered revisions of parent changeset has a significative performance benefit, too. Result by revset ================ Revision: 0) 0c7b353ce100; rust-cpython: binding for headrevs() 1) Parent of this changeset; changelog: prefilter in headrevs() 2) This changeset revset #0: heads(commonancestors(last(head(), 2))) plain min max first last reverse rev..rst rev..ast sort sor..rst sor..ast 0) 0.001379 0.001361 0.001381 0.001410 0.001393 0.001372 0.001414 0.001387 0.001411 0.001429 0.001415 1) 0.001351 0.001373 0.001383 0.001392 0.001401 0.001385 0.001405 0.001406 0.001385 0.001424 0.001399 2) 0.001365 0.001362 0.001375 0.001393 0.001370 0.001365 0.001413 0.001386 0.001377 0.001415 0.001411 revset #1: heads(commonancestors(head())) plain min max first last reverse rev..rst rev..ast sort sor..rst sor..ast 0) 0.047578 0.048578 0.047764 0.048065 0.047289 0.047305 0.047729 0.047370 0.047611 0.048005 0.047755 1) 0.048072 0.047471 0.048351 0.048193 0.048380 0.047968 0.047683 0.047355 0.048587 0.047044 0.048299 2) 0.047124 0.046699 0.046896 0.047250 0.046920 0.047379 0.046855 0.047753 0.047289 0.047219 0.046991 revset #2: heads(all()) plain min max first last reverse rev..rst rev..ast sort sor..rst sor..ast 0) 0.037654 0.037814 0.037149 0.037457 0.037609 0.037053 0.036825 0.037054 0.037739 0.036816 0.037604 1) 0.021845 58% 0.022172 58% 0.022148 59% 0.022059 58% 0.022261 59% 0.022246 60% 0.021691 58% 0.021967 59% 0.022156 58% 0.021820 59% 0.023141 61% 2) 0.014459 66% 0.014470 65% 0.014420 65% 0.014413 65% 0.014421 64% 0.014492 65% 0.014512 66% 0.014579 66% 0.014500 65% 0.014501 66% 0.014537 62% revset #3: heads(-10000:-1) plain min max first last reverse rev..rst rev..ast sort sor..rst sor..ast 0) 0.003696 0.003681 0.003719 0.003746 0.003725 0.003750 0.003692 0.003747 0.003712 0.003754 0.003763 1) 0.002131 57% 0.002142 58% 0.002147 57% 0.002203 58% 0.002143 57% 0.002208 58% 0.002158 58% 0.002182 58% 0.002169 58% 0.002209 58% 0.002201 58% 2) 0.001490 69% 0.001524 71% 0.001515 70% 0.001528 69% 0.001531 71% 0.001520 68% 0.001549 71% 0.001542 70% 0.001560 71% 0.001559 70% 0.001544 70% revset #4: (-5000:-1000) and heads(-10000:-1) plain min max first last reverse rev..rst rev..ast sort sor..rst sor..ast 0) 0.003832 0.003816 0.003747 0.003814 0.003749 0.003894 0.003784 0.003796 0.003915 0.003829 0.003795 1) 0.002282 59% 0.002208 57% 0.002220 59% 0.002240 58% 0.002210 58% 0.002276 58% 0.002250 59% 0.002250 59% 0.002311 59% 0.002230 58% 0.002241 59% 2) 0.001658 72% 0.001662 75% 0.001568 70% 0.001599 71% 0.001588 71% 0.001696 74% 0.001615 71% 0.001593 70% 0.001710 73% 0.001622 72% 0.001616 72% revset #5: heads(matching(tip, "author")) plain min max first last reverse rev..rst rev..ast sort sor..rst sor..ast 0) 7.826449 7.563260 7.581034 7.688493 7.634001 7.777860 7.768228 8.026097 7.767422 7.565254 7.938643 1) 7.750766 7.562555 7.660426 7.574089 7.492220 7.438582 7.562015 7.530635 93% 7.636343 7.636712 7.645113 2) 7.617941 7.519601 7.584922 7.507653 7.547440 7.524436 7.575291 7.883991 7.792142 7.709622 7.868595 revset #6: heads(matching(tip, "author")) and -10000:-1 plain min max first last reverse rev..rst rev..ast sort sor..rst sor..ast 0) 7.744489 7.728684 7.734065 7.928513 7.875949 7.883727 7.815492 7.791335 7.784793 7.761218 7.815731 1) 7.808956 7.480446 7.618759 7.920270 7.676343 7.803613 7.770210 7.713100 7.584420 7.767335 7.825140 2) 7.519987 7.938748 106% 7.805328 7.694162 7.750129 7.714229 7.603825 7.580734 7.555291 7.524207 7.504580 revset #7: (-10000:-1) and heads(matching(tip, "author")) plain min max first last reverse rev..rst rev..ast sort sor..rst sor..ast 0) 7.909321 7.694357 7.666021 7.538686 7.771821 7.876217 7.852103 7.812727 7.545919 7.788860 7.764585 1) 7.749232 7.683715 7.968393 7.895257 7.764160 8.314884 105% 7.921697 7.882613 7.867209 7.684707 7.544501 2) 7.824903 7.784605 7.727846 7.566613 7.581994 7.539205 90% 7.555316 7.535572 7.581786 7.901795 7.662832

changelog: prefilter in headrevs() In case where headrevs() is called on some revisions, we perform the check that aren't filtered in advance, and switch revlog to use its unchecked form. This allows to work with alternative implementations that don't have knowledge of the filtering system, such as the Rust one.

tests: fixed test too dependent on actual exception wording On one of the machines I use to run the tests prior to submission, the default Python is 2.7.5, with the following wording: must be encoded string without NULL bytes, not str This third form (and possible future ones) are motivation to use a wider catching regexp.

contrib: enforce wrapping too-long lines with () instead of \ This is the style I prefer, and an anecdotal exploration of styles recommended in style guides etc. Further, to quote pep8: > The preferred way of wrapping long lines is by using Python's implied > line continuation inside parentheses, brackets and braces. Long lines > can be broken over multiple lines by wrapping expressions in > parentheses. These should be used in preference to using a backslash > for line continuation. So I think this is a virtuous change. Differential Revision: https://phab.mercurial-scm.org/D5995

cleanup: prefer nested context managers to \-continuations I'd prefer Python accept a tuple of context managers, but alas it isn't meant to be. This will have to suffice. Differential Revision: https://phab.mercurial-scm.org/D5994

cleanup: use () to wrap long lines instead of \ This is a little less brittle, and often helps indentation. In a surprising number of cases the entire cleanup was deleting the \, as the expression was *already* parenthesized in a workable way. Differential Revision: https://phab.mercurial-scm.org/D5993

tests: use () instead of \ to wrap lines This should auto-format more consistently, and is slightly more typical Python. Differential Revision: https://phab.mercurial-scm.org/D5992

merge with stable

copies: do copy tracing based on ctx.p[12]copies() if configured This adds an option to do copy tracing in a changeset-optimized way. If the metadata is stored in filelogs, this is obviously going to be suboptimal. The point is that it provides a way of transitioning to changeset-stored metadata. Some of the tests behave a little differently, but they all seem resonable to me. The config option may very well be renamed later when it's clearer what options we want and how they will behave. When the test suite is run with --extra-config-opt to use the new copy tracing, all tests pass, besides test-copies.t (which fails in the same way as you can see in this patch). `hg debugpathcopies 4.0 4.8` reports 82 copies. With this option enabled, the only difference is this: -mercurial/pure/bdiff.py -> mercurial/cffi/bdiff.py +setup_bdiff_cffi.py -> mercurial/cffi/bdiff.py I believe that happened because it was renamed in different ways on different sides of a merge and the new algorithm arbitrarily prefers copies that happened on p1. The runtime is about 0.85 seconds with the old copy tracing and 5.7 seconds with the new copy tracing. That's kind of slow, but actually better than I had expected. Differential Revision: https://phab.mercurial-scm.org/D5991

context: introduce p[12]copies() methods and debugp[12]copies commands As mentioned earlier, I'm working on support for storing copy metadata in the changeset instead of in the filelog. In order to transition a repo from storing metadata in filelogs to storing it in the changeset, I'm going to provide a config option for reading the metadata from the changeset, but falling back to getting it from the filelog if it's not in the changeset. In this compatiblity mode, the changeset-optmized algorithms will be used. We will then need to convert the filelog copy metadata to look like that provided by changeset copy metadata. This patch introduces methods that do just that. By having these methods here, we can start writing changeset-optimized algorithms that should work already before we add any support for storing the metadata in the changesets. This commit also includes new debugp[12]copies commands and exercises them in test-copies.t. Differential Revision: https://phab.mercurial-scm.org/D5990

copies: filter out copies when target is not in destination manifest When chaining a series of commits that copied a file with a series that removed the destination file, we would still include the copy in the result. Similar to the previous patch, I have checked that `hg status --copies` is not affected by this bug, but I wouldn't be surprised if some commands are. Differential Revision: https://phab.mercurial-scm.org/D5989

copies: make _backwardrenames() filter out copies by destination As shown by the test case, _backwardrenames() doesn't filter by the matcher. It doesn't show up in `hg status --copies` because that only prints files changed between the two commits. I wouldn't be surprised if some other command that replies on pathcopies() was broken before this patch, but I haven't bothered to check other commands. Differential Revision: https://phab.mercurial-scm.org/D5988

copies: respect narrowmatcher in "parent -> working dir" case I don't know when this case happens and we don't seem to have tests for it, but let's fix it anyway since I happened to notice it. Differential Revision: https://phab.mercurial-scm.org/D5987

tests: add tests of pathcopies() I'm working on support for storing copy metadata in the changeset instead of in the filelog. When storing it in the changeset, it will obviously be efficient to get the copy metadata for all files in a single changeset, but it will be more expensive to get the copy metadata all revisions of a single file. Some algorithms will then need to be optimized differently. The first method I'm going to rewrite is pathcopies(). This commit adds many tests for pathcopies(), so we can run the tests with both old and new versions of the code, as well as with metadata stored in filelog or in changeset (later). They use the debugpathcopies command I recently added (with no tests when it was added). They show a few bugs and few cases of slightly weird behavior. I'll fix the bugs in the next few commits. Differential Revision: https://phab.mercurial-scm.org/D5986

uncommit: add config option to keep commit by default We have a Google-internal extension that keeps track of "review units" (like Phabricator reviews, or Gerrit's Change-Id). This information is stored outside of the commit. It is updated with rewrites. Every now and then we get reports from users who are confused because `hg uncommit` lost track of their review. Keeping the empty commit by default would reduce this confusion. It may also cause confusion about the empty commit. This patch adds a config option that lets us easily test both behaviors on our users. Differential Revision: https://phab.mercurial-scm.org/D5970

debugpathcopies: sort output so it's deterministic Differential Revision: https://phab.mercurial-scm.org/D5983

subrepo: use root-repo-relative path from `hg files` with ui.relative-paths=no The fix is to pass in a "subuipathfn" as we do everywhere else. Differential Revision: https://phab.mercurial-scm.org/D5978