match: make unionmatcher a proper matcher unionmatcher is currently used where only a limited subset of its functions will be called. Specifically, visitdir() is never called. The next patch will pass it to dirstate.walk() where it will matter that visitdir() is correctly implemented, so let's fix that. Also add the explicitdir etc that will also be assumed by dirstate.walk() to exist on a matcher. Differential Revision: https://phab.mercurial-scm.org/D58

match: write forceincludematcher using unionmatcher The forceincludematcher is simply a unionmatcher of a includematcher (matching paths recursively) with the given matcher. Since the forceincludematcher is only used by sparse, move it there. I don't have a good sparse repo setup to test performance impact on. Differential Revision: https://phab.mercurial-scm.org/D57

histedit: extract InterventionRequired transaction handling to utils rebase will have similar logic, so let's extract it. Besides, it makes the histedit code more readable. We may want to parametrize acceptintervention() by the exception(s) that should result in transaction close. Differential Revision: https://phab.mercurial-scm.org/D66

histedit: create transaction outside of try Just a little refactoring to simplify the next patch. Differential Revision: https://phab.mercurial-scm.org/D65

histedit: remove transaction from state object The transaction is only used within a single function, so no need to store it on the state object. Differential Revision: https://phab.mercurial-scm.org/D64

phabricator: verify local tags before trusting them Previously we trust local tags blindly and that could cause wrong Differential Revision to be updated, when people switch between Phabricator instances. This patch adds verification logic to detect such issue and remove problematic tags. For example, a tag "D19" was on node "X", the code will fetch all diffs attached to D19, and check if nodes server-side overlaps with nodes in precursors. If they do not overlap, create a new Differential Revision. Test Plan: Use a test Phabricator instance, send patches using `hg phabsend`, then change the local tag manually to a wrong Differential Revision number. Amend the patch and send again. Make sure the tag gets ignored and deleted. Differential Revision: https://phab.mercurial-scm.org/D36

phabricator: finding old nodes in batch This allows us to do extra sanity checks using batch APIs to prevent updating a wrong revision, which could happen when people switch Phabricator instances and having stale tags living in the repo. Differential Revision: https://phab.mercurial-scm.org/D34

phabricator: respect metadata sent by arc Previously we only respect hg:meta sent by phabsend. This patch makes it respect local:commits sent by arc as well. This avoids issues where phabread could lose the author information. Test Plan: Commit using a customized user, send the patch using arc to a test Phabricator instance, and then read the patch using phabread. Make sure it preserves the user information. Differential Revision: https://phab.mercurial-scm.org/D33

dirstate: update backup functions to take full backup filename Update the dirstate functions so that the caller supplies the full backup filename rather than just a prefix and suffix. The localrepo code was already hard-coding the fact that the backup name must be (exactly prefix + "dirstate" + suffix): it relied on this in _journalfiles() and undofiles(). Making the caller responsible for specifying the full backup name removes the need for the localrepo code to assume that dirstate._filename is always "dirstate". Differential Revision: https://phab.mercurial-scm.org/D68

util: remove unused ctxmanager This was meant as a substitute for Python's "with" with multiple context managers before we moved to Python 2.7. We're now on 2.7, so we should have no reason to keep ctxmanager. "hg grep --all ctxmanager" says that it was never used anyway. Differential Revision: https://phab.mercurial-scm.org/D73

codemod: simplify nested withs This is the result of running: python codemod_nestedwith.py **/*.py where codemod_nestedwith.py looks like this: #!/usr/bin/env python # codemod_nestedwith.py - codemod tool to rewrite nested with # # Copyright 2017 Facebook, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import, print_function import sys import redbaron def readpath(path): with open(path) as f: return f.read() def writepath(path, content): with open(path, 'w') as f: f.write(content) def main(argv): if not argv: print('Usage: codemod_nestedwith.py FILES') for i, path in enumerate(argv): print('(%d/%d) scanning %s' % (i + 1, len(argv), path)) changed = False red = redbaron.RedBaron(readpath(path)) processed = set() for node in red.find_all('with'): if node in processed or node.type != 'with': continue top = node child = top[0] while True: if len(top) > 1 or child.type != 'with': break # estimate line length after merging two "with"s new = '%swith %s:' % (top.indentation, top.contexts.dumps()) new += ', %s' % child.contexts.dumps() # only do the rewrite if the end result is within 80 chars if len(new) > 80: break processed.add(child) top.contexts.extend(child.contexts) top.value = child.value top.value.decrease_indentation(4) child = child[0] changed = True if changed: print('updating %s' % path) writepath(path, red.dumps()) if __name__ == "__main__": sys.exit(main(sys.argv[1:])) Differential Revision: https://phab.mercurial-scm.org/D77

reposvfs: add a ward to check if locks are properly taken we wrap 'repo.svfs.audit' to check for the store lock when accessing file in '.hg/store' for writing. This caught a couple of instance where the transaction was released after the lock, we should probably have a dedicated checker for that case.

repovfs: add a ward to check if locks are properly taken When the appropriate developer warnings are enabled, We wrap 'repo.vfs.audit' to check for locks when accessing file in '.hg' for writing. Another changeset will add a 'ward' for the store vfs (svfs). This check system has caught a handful of locking issues that have been fixed in previous series (mostly in 4.0). I expect another batch to be caught in third party extensions. We introduce two real exceptions from extensions 'blackbox.log' (because a lot of read-only operations add entry to it), and 'last-email.txt' (because 'hg email' is currently a read only operation and there is value to keep it this way). In addition we are currently allowing bisect to operate outside of the lock because the current code is a bit hard to get properly locked for now. Multiple clean up have been made but there is still a couple of them to do and the freeze is coming.

vfs: allow to pass more argument to audit We want to be able to do more precise check when auditing a path depending of the intend of the file access (eg read versus write). So we now pass the 'mode' value to 'audit' and update the audit function to accept them. This will be put to use in the next changeset.

zsh_completion: add '--partial' flag to completions for 'import' (issue5618) When using the 'import' command running ZSH together with its Mercurial-specific completions the flag '--partial' (introduced in Mercurial 3.1, 2014-08-01) is not offered as completion option. This patch adds it to the list of completions for the 'import' command.

configitems: register the 'bugzilla.password' config

configitems: register the 'bugzilla.mocklog' config

test-amend: fix HGEDITOR shell script to run on Windows Windows doesn't know how to launch *.sh directly. This workaround is used in several other tests.

test-paths: mask out JSON specific path differences for Windows The backslashes in the local paths were being escaped with another backslash, and $TESTTMP doesn't match against the double backslashed path. This doesn't happen without the 'json' filter.

tests: categorize entries in blacklist for fsmonitor for future reference

tests: avoid tests related to directory permission if running with fsmonitor

tests: add extra output for fsmonitor at checking under .hg

tests: add extra output for fsmonitor at showconfig

tests: take extra care for fsmonitor at enabling incompatible extension This is worthwhile, because these tests don't focus mainly on using incompatible extensions itself.

tests: remove meaningless entries from blacklist for fsmonitor IMHO, these tests were listed up in blacklist at 3b67f27bb908, because fsmonitor extension wasn't correctly installed before actual testing at that revision (this issue was fixed by 776fd2e2cf5a).

tests: remove meaningless comment from blacklist for fsmonitor These tests can run successfully since fe0667cc521e.

test-https: stabilize for Windows A leading '/' without a following drive letter is resolved to the location of the MSYS installation. These could be collapsed into a single line of output, but this seems more self documenting.

tagmerge: use workingfilectx to write merged tags This function already does an excellent job of reading from context objects; we simply need to change the single write call to eliminate all uses of the wvfs. As with past changes, the effect should be a no-op but opens the door to in-memory merge later by using different context objects.

run-tests: add color to output if pygments is available The output of run-tests has no formatting by default, which hampers readability. This patch colors the diff output when pygments is available. To avoid coloring even when pygments is available, use --color never.

win32: work around a WinError problem handling HRESULT types I ran into this ctypes bug while working with the Crypto API. While this could be an issue with any Win32 API in theory, the handful of things that we call are older functions that are unlikely to return COM errors, so I didn't retrofit this everywhere.

test-check-pyflakes: do not leave test.py in the repo Differential Revision: https://phab.mercurial-scm.org/D67

revset: add experimental ancestors/descendants relation subscript The relation name is 'generations' now, which may be changed in future.

revset: add experimental relation and subscript operators The proposed syntax [1] was originally 'set{n rel}', but it seemed slightly confusing if template is involved. On the other hand, we want to keep 'set[n]' for future extension. So this patch introduces 'set#rel[n]' ternary operator. I chose '#' just because it looks like applying an attribute. This also adds stubs for 'set[n]' and 'set#rel' operators since these syntax elements are fundamental for constructing 'set#rel[n]'. [1]: https://www.mercurial-scm.org/wiki/RevsetOperatorPlan#ideas_from_mpm

revset: do not compute weight for integer literal argument In x^n and x~n, n isn't a set expression. There's no need to optimize the right-hand side.

templatekw: export ui.paths as {peerpaths} It's sometimes useful to show hyperlinks in log output. "{get(peerpaths, "default")}/rev/{node}" Since each path may have sub options, "{peerpaths}" is structured as a dict of dicts, but the inner dict is rendered as if it were a string URL. The implementation is ad-hoc, so there are some weird behaviors described in the test. We might need to introduce a proper way of handling a hybrid scalar object. This patch adds _hybrid.__getitem__() so d['path']['url'] works. The keyword is named as "peerpaths" since "paths" seemed too generic in log context.

summary: fix type of empty unresolved list It was okay because tested as a boolean prior to calling len(), but looked incorrect.

vfs: rename auditvfs to proxyvfs Since we've removed mustaudit property, auditvfs has no auditing business. It's just a utility class for vfs wrappers.

streamclone: comment why path auditing is disabled in generatev1() Copied from 39c6e349dfff. I wasn't sure whether it's for optimization or suppressing unwanted error.

streamclone: close large revlog files explicitly in generatev1()

bundle2: no longer use 'retractboundary' in updatephases The new 'phase-heads' forced all added node to secret before advancing the boundary to work around the fact changesets were added as draft by default. This is no longer necessary since the changegroup part can now use the 'targetphase' parameter. Not doing this retract boundary call has a couple of advantages: * This makes implementing phases change tracking in the transaction much simpler since retract boundary can become a rare case. * Bundling secret changesets is not the norm. Exchange never does that and even for strip, the use-case is not common.Skipping the retract boundary will avoid useless work here. * Sending phase update on push can be simplified since we can rely on the behavior of 'cg.apply' for most of it. This means less phases update send for example. * We no longer needs to track and use the addednodes during unbundling. This make it possible to have multiple 'changegroup' and 'phase-heads' parts in the same bundle without them interfering with each others. The new part has not been part of any release yet so we do not offer backward compatibility yet. It is important to update this semantic before the 4.3 freeze happens.

bundle2: automatically add 'targetphase' parameter in writenewbundle If we are bundling secret changeset and the bundle will contain phase, we request the changegroup to be applied as secret. It will be useful for next patch as we are now sure that secrets changesets are applied as secret and not applied as draft then forced to secret.

bundle2: support the 'targetphase' parameter for the changegroup part By default unbundled changesets are drafts. We want to reduce the number of phases changes during unbundling by giving the possibility to the bundle to indicate the phase of unbundled changesets. The longer terms goal is to add phase movement tracking in tr.changes and the 'retractboundary' call is making it more complicated than we want.

changegroup: stop treating strip as special when dealing with phases Since 8e3021fd1a44, the strip bundle includes the phases of the stripping node. Hence we don't need this special case anymore. Dropping it will helps make the phase behavior more consistent across all exchanges medium.

match: inverse _anypats(), making it _prefix()

amend: new extension providing the amend command Various third parties have implemented the `amend` command, which is in high demand. This patch adds it as an experimental extension so its interface could be formalized in core directly. Since `commit --amend` is basically what `amend` should do. The command is just a thin wrapper around `commit --amend` and just prevent the editor from popping up by passing `--message`.

py3: make localrepo filtered repo cache work on py3 I don't know if this is the right fix, but it makes test-py3-commands.t pass again. Differential Revision: https://phab.mercurial-scm.org/D56

configitems: register the 'bugzilla.host' config

configitems: register the 'bugzilla.fixstatus' config

configitems: register the 'bugzilla.fixresolution' config

configitems: register the 'bugzilla.fixregexp' config

configitems: register the 'bugzilla.db' config

configitems: register the 'bugzilla.bzuser' config

configitems: register the 'bugzilla.bzurl' config

configitems: register the 'bugzilla.bzemail' config

configitems: register the 'bugzilla.bzdir' config

configitems: register the 'bugzilla.apikey' config

revlog: use struct.Struct instances for slight performance wins Differential Revision: https://phab.mercurial-scm.org/D32

revlog: micro-optimize the computation of hashes Differential Revision: https://phab.mercurial-scm.org/D31

hgweb: re-implement followlines UI selection using buttons This changeset attempts to solve two issues with the "followlines" UI in hgweb. First the "followlines" action is currently not easily discoverable (one has to hover on a line for some time, wait for the invite message to appear and then perform some action). Second, it gets in the way of natural line selection, especially in filerevision view. This changeset introduces an additional markup element (a <button class="btn-followlines">) alongside each content line of the view. This button now holds events for line selection that were previously plugged onto content lines directly. Consequently, there's no more action on content lines, hence restoring the "natural line selection" behavior (solving the second problem). These buttons are hidden by default and get displayed upon hover of content lines; then upon hover of a button itself, a text inviting followlines section shows up. This solves the first problem (discoverability) as we now have a clear visual element indicating that "some action could be perform" (i.e. a button) and that is self-documented. In followlines.js, all event listeners are now attached to these <button> elements. The custom "floating tooltip" element is dropped as <button> elements are now self-documented through a "title" attribute that changes depending on preceding actions (selection started or not, in particular). The new <button> element is inserted in followlines.js script (thus only visible if JavaScript is activated); it contains a "+" and "-" with a "diff-semantics" style; upon hover, it scales up. To find the parent element under which to insert the <button> we either rely on the "data-selectabletag" attribute (which defines the HTML tag of children of class="sourcelines" element e.g. <span> for filerevision view and <tr> for annotate view) or use a child of the latter elements if we find an element with class="followlines-btn-parent" (useful for annotate view, for which we have to find the <td> in which to insert the <button>). On noticeable change in CSS concerns the "margin-left" of span:before pseudo-elements in filelog view that has been increased a bit in order to leave space for the new button to appear between line number column and line content one. Also note the "z-index" addition for "annotate-info" box so that the latter appears on top of new buttons (instead of getting hidden). In some respect, the UI similar to line commenting feature that is implemented in popular code hosting site like GitHub, BitBucket or Kallithea.

localrepo: cache types for filtered repos (issue5043) Python introduces a reference cycle on dynamically created types via __mro__, making them very easy to leak. See https://bugs.python.org/issue17950. Previously, repo.filtered() created a type on every invocation. Long-running processes (like `hg convert`) could call this function thousands of times, leading to a steady memory leak. Since we're Unable to stop the leak because this is a bug in Python, the next best thing is to contain it. This patch adds a cache of of the dynamically generated repoview/filter types on the localrepo object. Since we only generate each type once, we cap the amount of memory that can leak to something reasonable. After this change, `hg convert` no longer leaks memory on every revision. The process will likely grow memory usage over time due to e.g. larger manifests. But there are no leaks.

convert: transcode CVS log messages by specified encoding (issue5597) Converting from CVS to Mercurial assumes that CVS log messages in "cvs rlog" output are encoded in UTF-8 (or basic Latin-1). But cvs itself is usually unaware of encoding of log messages, in practice. Therefore, if there are commits, of which log message is encoded in other than UTF-8, log message of corresponded revisions in the converted repository will be broken. To avoid such broken log messages, this patch transcodes CVS log messages by encoding specified via "convert.cvsps.logencoding" configuration. This patch accepts multiple encoding for convenience, because "multiple encoding mixed in a repository" easily occurs. For example, UTF-8 (recent POSIX), cp932 (Windows), and EUC-JP (legacy POSIX) are well known encoding for Japanese.

fsmonitor: execute setup procedures only if dirstate is already instantiated Before this patch, reposetup() of fsmonitor executes setup procedures for dirstate, even if it isn't yet instantiated at that time. On the other hand, dirstate might be already instantiated before reposetup() intentionally (prefilling by chg, for example, see bf3af0eced44 for detail). If so, just discarding already instantiated one in reposetup() causes issue. To resolve both issues above, this patch executes setup procedures, only if dirstate is already instantiated. BTW, this patch removes "del repo.unfiltered().__dict__['dirstate']", because it is responsibility of the code path, which causes instantiation of dirstate before reposetup(). After this patch, using localrepo.isfilecached() should avoid creating the corresponded entry in repo.unfiltered().__dict__.

fsmonitor: centralize setup procedures for dirstate

fsmonitor: avoid needless instantiation of dirstate Using repo.local() instead of util.safehasattr(repo, 'dirstate') also avoids executing setup procedures for remote repository (including statichttprepo). This is reason why this patch also removes a part of subsequent comment, and try/except for AttributeError at accessing to repo.wvfs.

journal: use wrapfilecache instead of wrapfunction on func of filecache wrapfilecache() on filecache-ed property works more strictly than wrapfunction() directly on func() of filecache.

journal: execute setup procedures for already instantiated dirstate If dirstate is instantiated before reposetup() of journal extension, it doesn't have "journalstorage" property, even if it is instantiated via wrapdirstate() wrapping repo.dirstate(), because wrapdirstate() works as same as original one before marking repo as "journal"-ing in reposetup(). This issue can be reproduced by running test-journal.t or test-journal-share.t with fsmonitor-run-tests.py. On the other hand, just discarding already instantiated dirstate in reposetup() prevents chg from filling dirstate before reposetup() (see bf3af0eced44 for detail). Therefore, this patch executes setup procedures for already instantiated dirstate explicitly in reposetup(). To centralize setup procedures for dirstate, this patch also factors them out from wrapdirstate().

localrepo: add isfilecached to check filecache-ed property is already cached isfilecached() encapsulates internal implementation of filecache-ed property. "name in repo.unfiltered().__dict__" or so can't be used for this purpose, because corresponded entry in __dict__ might be discarded by repo.invalidate(), repo.invalidatedirstate() or so (fsmonitor does so, for example). This patch makes isfilecached() return not only whether filecache-ed property is already cached, but also already cached value (or None), in order to avoid subsequent access to cached object via "repo.NAME", which prevents main Mercurial procedure after reposetup() from validating cache.

sslutil: check for missing certificate and key files (issue5598) Currently, sslutil._hostsettings() performs validation that web.cacerts exists. However, client certificates are passed in to the function and not all callers may validate them. This includes httpconnection.readauthforuri(), which loads the [auth] section. If a missing file is specified, the ssl module will raise a generic IOException. And, it doesn't even give us the courtesy of telling us which file is missing! Mercurial then prints a generic "abort: No such file or directory" (or similar) error, leaving users to scratch their head as to what file is missing. This commit introduces explicit validation of all paths passed as arguments to wrapsocket() and wrapserversocket(). Any missing file is alerted about explicitly. We should probably catch missing files earlier - as part of loading the [auth] section. However, I think the sslutil functions should check for file presence regardless of what callers do because that's the only way to be sure that missing files are always detected.

match: override matchfn instead of __call__ for consistency The matchers that were recently moved into core from the sparse extension override __call__, while the previously existing matchers override matchfn. Let's switch to the latter for consistency.

match: express anypats(), not prefix(), in terms of the others When I added prefix() in 9789b4a7c595 (match: introduce boolean prefix() method, 2014-10-28), we already had always(), isexact(), and anypats(), so it made sense to write it in terms of them (a prefix matcher is one that isn't any of the other types). It's only now that I realize that it's much more natural to define prefix() explicitly (it's one that uses path: patterns, roughly speaking) and let anypats() be defined in terms of the others. Remember that these methods are all used for determining which fast paths are possible. anypats() simply means that no fast paths are possible (it could be called complex() instead). Further evidence is that rootfilesin:some/dir does not have any patterns, but it's still considered to be an anypats() matcher. That's because anypats() really just means that it's not a prefix() matcher (and not always() and not isexact()). This patch thus changes prefix() to return False by default and anypats() to return True only if the other three are False. Having anypats() be True by default also seems like a good thing, because it means forgetting to override it will lead only to performance bugs, not correctness bugs. Since the base class's implementation changes, we're also forced to update the subclasses. That change exposed and fixed a bug in the differencematcher: for example when both its two input matchers were prefix matchers, we would say that the result was also a prefix matcher, which is incorrect, because e.g "path:dir - path:dir/foo" no longer matches everything under "dir" (which is what prefix() means).

match: make nevermatcher an exact matcher and a prefix matcher The m.isexact() and m.prefix() methods are used by callers to determine whether m.files() can be used for fast paths. It seems safe to let callers to any fast paths it can that rely on the empty m.files().

revset: define successors revset This revset returns all successors, including transit nodes and the source nodes (to be consistent with existing revsets like "ancestors"). To filter out transit nodes, use `successors(X)-obsolete()`. To filter out divergent case, use `successors(X)-divergent()-obsolete()`. The revset could be useful to define rebase destination, like: `max(successors(BASE)-divergent()-obsolete())`. The `max` is to deal with splits. There are other implementations where `successors` returns just one level of successors, and `allsuccessors` returns everything. I think `successors` returning all successors by default is more user friendly. We have seen cases in production where people use 1-level `successors` while they really want `allsuccessors`. So it seems better to just have one single revset returning all successors by default to avoid user errors. In the future we might want to add `depth` keyword argument to it and for other revsets like `ancestors` etc. Or even build some flexible indexing syntax [1] to satisfy people having the depth limit requirement. [1]: https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-July/101140.html

sparse: shorten try..except block in updateconfig() It now only covers refreshwdir(). This is what importfromfiles() does. I think it is the more appropriate behavior.

sparse: clean up updateconfig() * Use context manager for wlock * Rename oldsparsematch to oldmatcher * Always call parseconfig() because parsing an empty string yields the same result as the old code

sparse: move config updating function into core As part of the move, the ui argument was dropped. Additional fixups will be made in a follow-up commit.

dirstate: expose a sparse matcher on dirstate (API) The sparse extension performs a lot of monkeypatching of dirstate to make it sparse aware. Essentially, various operations need to take the active sparse config into account. They do this by obtaining a matcher representing the sparse config and filtering paths through it. The monkeypatching is done by stuffing a reference to a repo on dirstate and calling sparse.matcher() (which takes a repo instance) during each function call. The reason this function takes a repo instance is because resolving the sparse config may require resolving file contents from filelogs, and that requires a repo. (If the current sparse config references "profile" files, the contents of those files from the dirstate's parent revisions is resolved.) I seem to recall people having strong opinions that the dirstate object not have a reference to a repo. So copying what the sparse extension does probably won't fly in core. Plus, the dirstate modifications shouldn't require a full repo: they only need a matcher. So there's no good reason to stuff a reference to the repo in dirstate. This commit exposes a sparse matcher to dirstate via a property that when looked up will call a function that eventually calls sparse.matcher(). The repo instance is bound in a closure, so it isn't exposed to dirstate. This approach is functionally similar to what the sparse extension does today, except it hides the repo instance from dirstate. The approach is not optimal because we have to call a proxy function and sparse.matcher() on every property lookup. There is room to cache the matcher instance in dirstate. After all, the matcher only changes if the dirstate's parents change or if the sparse config changes. It feels like we should be able to detect both events and update the matcher when this occurs. But for now we preserve the existing semantics so we can move the dirstate sparseness bits into core. Once in core, refactoring becomes a bit easier since it will be clearer how all these components interact. The sparse extension has been updated to use the new property. Because all references to the repo on dirstate have been removed, the code for setting it has been removed.

sparse: use self instead of repo.dirstate "self" here is the dirstate instance. I'm pretty confident that self and repo.dirstate will be the exact same object. So remove a dependency on repo by just looking at self.

sparse: move code for importing rules from files into core This is a pretty straightforward port. Some code cleanup was performed. But no major changes to the logic were made. I'm not a huge fan of this function because it does multiple things. I'd like to get things into core first to facilitate refactoring later. Please also note the added inline comment about the oddities of writeconfig() and the try..except to undo it. This is because of the hackiness in which the sparse matcher is obtained by various consumers, notably dirstate. We'll need a massive refactor to address this. That refactor is effectively blocked on having the sparse dirstate hacks live in core.

sparse: refactor activeprofiles into a generic function (API) activeprofiles() is a special case of a more generic function. Furthermore, that generic function is essentially already implemented inline in the sparse extension. So, refactor activeprofiles() to a generic activeconfig(). Change the only consumer of activeprofiles() to use it. And have the inline implementation in the sparse extension use it.

check-code: prohibit `if False` antipattern Differential Revision: https://phab.mercurial-scm.org/D20

convert: remove `if False` block This code has never run since its introduction on July 18th, 2007. It's time for it to go. Differential Revision: https://phab.mercurial-scm.org/D19

filterpyflakes: move self-test into test file This will avoid a false positive on an upcoming check-code rule. Differential Revision: https://phab.mercurial-scm.org/D18

test-subrepo: demonstrate a status problem when merge deletes a file At the interactive update prompt, if (c) is chosen and then followed by `hg rm`, both `status -R` and `status -S` show the file as 'R', and `files -R` shows no files (OK, because explicitly removed files aren't supposed to be listed). If `rm` follows selecting (c), then both flavors of `status` list the file as '!', and `files -R` lists the missing file. So somehow, the (d) option has followed a third path.

subrepo: make the output references to subrepositories consistent Well, mostly. The annotation on subrepo functions tacks on a parenthetical to the abort message, which seems reasonable for a generic mechanism. But now all messages consistently spell out 'subrepository', and double quote the name of the repo. I noticed the inconsistency in the change for the last commit.

subrepo: consider the parent repo dirty when a file is missing This simply passes the 'missing' argument down from the context of the parent repo, so the same rules apply. subrepo.bailifchanged() is hardcoded to care about missing files, because cmdutil.bailifchanged() is too. In the end, it looks like this addresses inconsistencies with 'archive', 'identify', blackbox logs, 'merge', and 'update --check'. I wasn't sure how to implement this in git, so that's left for someone more familiar with it.

archival: flag missing files as a dirty wdir() in the metadata file (BC) Since the identify command adds a '+' for missing files, it's reasonable that this does too. Perhaps the node field's hex value should be p1+p2 for merges?

cmdutil: simplify the dirty check in howtocontinue() This is equivalent to the previous code. But it seems to me that if the user is going to be prompted that a commit is needed, missing files should be ignored, but branch and merge changes shouldn't be.

blackbox: simplify the dirty check Same idea (and possibly incorrect behavior) as the previous commit.

identify: simplify the dirty check This is equivalent to the previous code, but it seems better to be explicit about what aspects of dirty are being ignored. Perhaps they shouldn't be, since the help text says 'followed by a "+" if the working directory has uncommitted changes'. Both merges and branch changes are committable, even if the files are unchanged. Additionally, this will make the `identify` command notice missing subrepo files, once subrepos are taught to look for missing files.

tests: tweak the subrepo dirty state tests This is a continuation of 439b4d005b4a. I overlooked that blackbox logs also have a dirty marker. Also, the `hg update --check` test was updating to a revision where the deleted file wasn't tracked, which is why status seemed to show the deleted file was restored.

match: combine regex code for path: and relpath: The regexes for path: and relpath: patterns are the same (since the paths have already been normalized at the point we create the regexes). I don't think the "if pat == '.'" will have any effect relpath: because relpath: patterns will have the root directory already normalized to '' by pathutil.canonpath() (unlike path:, for which the root gets normalized to '.' by util.normpath()).

match: remove unnecessary '^' from regexes The regexes are passed to re.match(), which matches against the beginning of the input, so the '^' doesn't do anything. Note that unrooted patterns, such as globs and regexes from .hgignore are instead achieved by adding '.*' to the expression given by the user. (That's unless the user's expression started with '^', in which case the '.*' is not added, perhaps to keep the regex cleaner?)

sparse: access status fields by name instead of deconstructing it The status tuples has had named fields for a few years now.

sparse: move printing of sparse config changes function into core As part of the port, all arguments now have default values of 0. Strings are now also given the i18n treatment.

sparse: move code for clearing rules to core This is a pretty straightforward port.

sparse: move post commit actions into core Instead of wrapping committablectx.markcommitted(), we inline the call into workingctx.markcommitted(). Per smf's review, workingctx is the proper location for this code, as committablectx is the shared base class for it and memctx. Since this code touches the working directory, it belongs in workingctx.

cleanupnode: do not use generator for node mapping The 'successors' part of the mappings used of be a tuple. This avoid issue from code consuming the generator "by mistake". For example, an extension inspecting the mapping content used to be able to iterate over the successors mapping without consequence. Since the mapping are small we do not expect any performance impact we use tuple again for this.

histedit: use scmutil.cleanupnodes (BC) This is marked as BC because the strip backup file name has changed.

histedit: unify strip backup files on success (BC) Previously we wrote two different strip backup files on success. This patch unifies them. It will make scmutil.cleanupnodes migration more smooth.

histedit: pass multiple nodes to strip (BC) Previously, histedit.cleanupnode pass root nodes one by one. Since repair.strip takes multiple nodes and can handle them just fine, pass all strip roots at once. This is BC because the number of strip backup files may change from N to 1.

histedit: remove "name" parameter from cleanupnode functions The "name" parameter is not used any longer so let's remove it.

histedit: remove "should strip" debug message The debug message was not used anywhere. Removed it to make scmutil.cleanupnodes migration easier to reason about.

histedit: move topmost bookmark movement to a separate function histedit treats topmost bookmark movement specially. The rest of the bookmark movement could be handled by scmutil.cleanupnodes. So let's move the special logic out to make the patch easier to review.

histedit: remove moving bookmarks message on verbose (BC) This is more consistent with other commands, like "commit -v" won't show bookmark movement messages. It will make migrating to scmutil.cleanupnodes easier.

test-largefiles-update: conditionalize output instead of tests

test-status-rev: conditionalize output instead of tests

test-mq: conditionalize output instead of tests

test-annotate: conditionalize output instead of tests

test-addremove: conditionalize output instead of tests

test-tools: conditionalize output instead of tests

test-rebase: conditionalize output instead of tests This should help prevent breakage like was fixed in the last patch.

tests: stabilize on Windows I'm not sure if the difference on Windows for test-sparse.t is expected or not. It looks like unless the leading '/' is followed by a drive letter, '/' is resolved to 'C:/MinGW/msys/1.0'. But both cases abort with "not under root" instead of just warning.

revset: make repo.anyrevs accept customized alias override (API) Previously repo.anyrevs only expand aliases in [revsetalias] config. This patch makes it more flexible to accept a customized dict defining aliases without having to couple with ui. revsetlang.expandaliases now has the signature (tree, aliases, warn=None) which is more consistent with templater.expandaliases. revsetlang.py is now free from "ui", which seems to be a good thing.

tests: quote $PYTHON for Windows When unquoted, MSYS sees the colon between the drive letter and path as a Unix path separator and unhelpfully splits on it, feeding only the drive letter as the command. Much chaos ensues. I vaguely remember trying to get the test runner to use /letter/path/to/exe syntax the last time this happened, without success. I doubt a check-code rule would work, since sometimes it is quoted, and sometimes the quotes are escaped.

amend: use scmutil.cleanupnodes (BC) This is marked as BC because the strip backup file name has changed.

rebase: remove "if True" The "if True" block was to make the last patch easier to review. This patch removes "if True" and unindents the block.

rebase: use scmutil.cleanupnodes (issue5606) (BC) This patch migrates rebase to use scmutil.cleanupnodes API. It simplifies the code and makes rebase code reusable inside a transaction. This is a BC because the backup file is no longer strip-backup/*-backup.hg, but strip-backup/*-rebase.hg. The latter looks more reasonable since the directory name is "strip-backup" so there is no need to repeat "backup". I think the backup file name change is probably fine as a BC, since we have changed it before (aa4a1672583e) and didn't get complains. The end result of this series will be a much more consistent and unified backup names: command | old backup file suffix | new backup file suffix ------------------------------------------------------------------- amend | amend-backup.hg | amend.hg histedit | backup.hg (could be 2 files) | histedit.hg (single file) rebase | backup.hg | rebase.hg strip | backup.hg | backup.hg (note: backup files are under .hg/strip-backup) It also fixes issue5606 as a side effect because the new "delayedstrip" code path will carefully examine nodes (safestriproots) to make sure orphaned changesets won't get stripped by accident. Some warning messages are changed to the new "warning: orphaned descendants detected, not stripping HASHES", which provides more information about exactly what changesets are left behind. Another minor behavior change is when there is an obsoleted changeset with a successor in the destination branch, bookmarks pointing to that obsoleted changeset will not be moved. I have commented in test-rebase-obsolete.t explaining why that is more desirable.

scmutil: make cleanupnodes delete divergent bookmarks cleanupnodes takes care of bookmark movement, and bookmark movement could cause bookmark divergent resolution as a side effect. This patch adds such bookmark divergent resolution logic so future rebase migration will be easier. The revset is carefully written to be equivalent to what rebase does today. Although I think it might make sense to remove divergent bookmarks more aggressively, for example: F book@1 | E book@2 | | D book | | | C |/ B book@3 | A When rebase -s C -d E, "book@1" will be removed, "book@3" will be kept, and the end result is: D book | C | F | E book@2 (?) | B book@3 | A The question is should we keep book@2? The current logic keeps it. If we choose not to (makes some sense to me), the "deleterevs" revset could be simplified to "newnode % oldnode". For now, I just make it compatible with the existing behavior. If we want to make the "deleterevs" revset simpler, we can always do it in the future.

scmutil: make cleanupnodes handle filtered node In some valid usecases, the "mapping" received by scmutil.cleanupnodes have filtered nodes. Use unfiltered repo to access them correctly. The added test case will fail with the old cleanupnodes code. This is important to migrate histedit to use the cleanupnodes API.

configitems: add alias support in config Aliases define optional alternatives to existing options. For example the old option ui.user was deprecated and replaced by ui.username. With this mechanism, it's even possible to create an alias to an option in a different section. Add ui.user as alias to ui.username as an example of this concept. The old alternates principle in ui.config is removed as it was used only for this option.