configitems: register the 'win32mbcs.encoding' config

copytrace: move fast heuristic copytracing algorithm to core copytrace extension in fb-hgext has a heuristic implementation of copy tracing which is faster than the current copy tracing. The heuristic limits the search of copies to just files that are either: 1) Renames in the same directory 2) Moved to other directory with same name The default copytrace implementation is very slow as it finds all the new files that were added from merge base up to the head commit and for each file it checks whether it this was copied or moved version of a different file. Stash@fb did analysis for the above heuristics on the fb repo and found that among 2,443,768 moves/copies there are only 32,234 moves/copies which does not fall under the above heuristics which is approx. 0.013 of total copies. This patch moves the heuristics algorithm under config `experimental.copytrace=heuristics`. While moving fbext to core, this patch removes couple of less useful config options named `sourcecommitlimit` and `maxmovescandidatestocheck`. Tests are also added for the heuristics algorithm, which are basically copied from fbext/tests/test-copytrace.t. The tests follow a pattern creating a server repo and then cloning to a local repo to create public and draft changesets, the distinction which will be useful in upcoming patches. After this patch `experimental.copytrace` has the following behaviour: 1) `off`: turns off copytracing 2) `heuristics`: use the heuristic algorithm added in this patch. 3) everything else: use the full copytracing algorithm .. feature:: A new fast heuristic algorithm for copytracing which assumes that the files moves are either:: 1) Renames in the same directory 2) Moves in other directories with same names You can use this algorithm by setting `experimental.copytrace=heuristics`. Differential Revision: https://phab.mercurial-scm.org/D623

configitems: register the 'convert.svn.startrev' config

configitems: register the 'convert.svn.debugsvnlog' config

configitems: register the 'convert.skiptags' config

configitems: register the 'convert.p4.startrev' config

configitems: register the 'convert.localtimezone' config

configitems: register the 'convert.ignoreancestorcheck' config

configitems: register the 'convert.hg.usebranchnames' config

configitems: register the 'convert.hg.tagsbranch' config

configitems: register the 'convert.hg.startrev' config

configitems: register the 'convert.hg.sourcename' config

configitems: register the 'convert.hg.saverev' config

configitems: register the 'convert.hg.revs' config

configitems: register the 'convert.hg.ignoreerrors' config

configitems: register the 'convert.hg.clonebranches' config

configitems: register the 'convert.git.skipsubmodules' config

configitems: register the 'convert.git.similarity' config

configitems: register the 'convert.git.saverev' config

configitems: register the 'convert.git.renamelimit' config

configitems: register the 'convert.git.remoteprefix' config

configitems: register the 'convert.git.findcopiesharder' config

configitems: register the 'convert.git.extrakeys' config

configitems: register the 'convert.git.committeractions' config

configitems: register the 'convert.cvsps.mergeto' config

configitems: register the 'convert.cvsps.mergefrom' config

configitems: register the 'convert.cvsps.fuzz' config

configitems: register the 'convert.cvsps.cache' config The convert extensions has code a bit all around, but it seems simpler to use a central declaration of options at the root first.

bundle2: move exception handling into part iterator As part of separating the part iteration logic from the part handling logic, let's move the exception handling to the part iterator class. Differential Revision: https://phab.mercurial-scm.org/D705

bundle2: move part counter to partiterator As part of moving the part iterator logic to a separate class, let's move the part counting logic and the output for it. Differential Revision: https://phab.mercurial-scm.org/D704

bundle2: move part iterator a separate class Currently, the part iterator logic is tightly coupled with the part handling logic, which means it's hard to replace the part handling logic without duplicating the part iterator bits. In a future diff we'll want to be able to replace all part handling, so let's begin refactoring the part iterator logic to it's own class. Differential Revision: https://phab.mercurial-scm.org/D703

changegroup: add source parameter to generatemanifests Extensions, like remotefilelog, will want to look at the source of a pull when determining what manifests to add to a changegroup. For instance, on push they will include everything, while on pull they won't. Differential Revision: https://phab.mercurial-scm.org/D686

changegroup: remove changegroup dependency from revlog.addgroup Previously revlog.addgroup would accept a changegroup and a linkmapper and use it to iterate of the deltas. As part of untangling the revlog-changegroup interdependency, let's move the changegroup delta iteration logic to it's own function and pass the simple iterator to the revlog instead. This will make it easier to introduce non-revlogs stores in the future, without reinventing any changegroup specific logic. Differential Revision: https://phab.mercurial-scm.org/D688

revlog: refactor chain variable Previously the addgroup loop would set chain to be the result of self._addrevision(node,...). Since _addrevision now always returns the passed in node, we can drop that behavior and just always set chain = node in the loop. This will be useful in a future patch where we refactor the cg.deltachunk logic to another function and therefore chain disappears entirely from this function. Differential Revision: https://phab.mercurial-scm.org/D699

scmutil: don't append .orig to backups in origbackuppath (BC) When ui.origbackuppath is set, .orig files are stored outside of the working copy, however they still have a .orig suffix appended to them. This can cause unexpected conflicts, particularly when tracked files or directories have .orig at the end. This change removes the .orig suffix from files stored in an out-of-tree origbackuppath. Test Plan: Update and run unit tests. Differential Revision: https://phab.mercurial-scm.org/D679

ssh: fix flakey ssh errors on BSD systems This is a trivial backport of c037fd655b47 performed by augie@google.com, but the change is still really Durham's not mine, so I [augie] am leaving him as the author.

repair: preserve phase also when not using generaldelta (issue5678) It seems like we used to pick the oldest possible version of the changegroup to use for bundles created by the repair module (used e.g. by "hg strip" and for temporary bundles by "hg rebase"). I tried to preserve that behavior when I created the changegroup.safeversion() method in 3b2ac2115464 (changegroup: introduce safeversion(), 2016-01-19). However, we have recently chagned our minds and decided that these commands are only used locally and downgrades are unlikely. That decicion allowed us to start adding obsmarker and phase information to these bundles. However, as the bug report shows, it means we get different behavior e.g. when generaldelta is not enabled (because when it was enabled, it forced us to use bundle2). The commit that actually caused the reported bug was 8e3021fd1a44 (strip: include phases in bundle (BC), 2017-06-15). So, since we now depend on having more information in the bundles, let's make sure we instead pick the newest possible changegroup version. Differential Revision: https://phab.mercurial-scm.org/D715

tests: add test for issue5678 In addition to a test case for the direct problem described in the bug report, this also adds a test case showing how obsmarkers can also get lost when not using generaldelta. Differential Revision: https://phab.mercurial-scm.org/D714

merge: move cwd-missing detection to helper functions This will exist in two places with defered writes, so we want to avoid duplication. Differential Revision: https://phab.mercurial-scm.org/D626

doctest: enable tests by default on Python 3 Still several tests fail mostly because of the string issues, sigh. I'll fix them one by one.

doctest: normalize b'', u'' and exception output on Python 3 The idea is described in the following page. https://dirkjan.ochtman.nl/writing/2014/07/06/single-source-python-23-doctests.html # no-check-commit

doctest: coerce dict.keys() to list Otherwise it would be printed as odict_keys([...]) on Python 3.

doctest: upgrade old-style "except" clause

doctest: use print_function and convert bytes to unicode where needed

doctest: do not embed non-ascii characters in docstring Since the outer docstring is parsed as a unicode on Python 3, we have to either double-escape or construct non-ascii string from ascii string.

doctest: pass encoding name as system string

doctest: replace str() with bytes()

doctest: replace chr() with pycompat.bytechr()

doctest: replace .iteritems() with .items()

doctest: bulk-replace string literals with b'' for Python 3 Our code transformer can't rewrite string literals in docstrings, and I don't want to make the transformer more complex.

debuginstall: do not pass exception object to formatter (issue5676)

debuginstall: use codecs.lookup() to detect invalid encoding encoding.fromlocal() never tries to decode an ascii string since 853574db5b12, and there's no universal non-ascii string which can be decoded as any valid character set.

extensions: fix wrapcommand/function of class instance 5361771f9714 changed _updatewrapper() to copy the __name__ attribute, but not all callable objects has __name__. Spotted by loading mq with extdiff.

changegroup: avoid creating empty changegroup part Previously this check happened in the changegroup code itself. Since its refactor, this logic needs to move out to callers that care about it, such as this one. Otherwise we get empty bundle devel-warnings in certain extensions. Differential Revision: https://phab.mercurial-scm.org/D690

tests: split test-revset.t in half This test has gotten so large that running it can exceed the normal timeout on systems under load (like if we're running all the tests in parallel). This patch splits the test cleanly in half. Differential Revision: https://phab.mercurial-scm.org/D694

merge: flush any deferred writes just before recordupdates() ``recordupdates`` calls into the dirstate which requires the files to be there, so this is the last possible moment we can flush anything. Differential Revision: https://phab.mercurial-scm.org/D673