fileset: add a lightweight file filtering language This patch was inspired by one that Jun Wu authored for the fb-experimental repo, to avoid using matcher for efficiency[1]. We want a way to specify what files will be converted to LFS at commit time. And per discussion, we also want to specify what files to skip, text diff, or merge in another config option. The current `lfs.threshold` config option could not satisfy complex needs. I'm putting it in a core package because Augie floated the idea of also using it for narrow and sparse. Yuya suggested farming out to fileset.parse(), which added support for more symbols. The only fileset element not supported here is 'negate'. (List isn't supported by filesets either.) I also changed the 'always' token to the 'all()' predicate for consistency, and introduced 'none()' to improve readability in a future tracked file based config. The extension operator was changed from '.' to '**', to match how recursive path globs are specified. Finally, I changed the path matcher from '/' to 'path:' at Yuya's suggestion, for consistency with matcher. Unfortunately, ':' is currently reserved in filesets, so this has to be quoted to be processed as a string instead of a symbol[2]. We should probably revisit that, because it's seriously ugly. But it's only used by an experimental extension, and I think using a file based config for LFS may drive some more tweaks, so I'm settling for this for now. I reserved all of the glob characters in fileset except '.' and '_' for the extension test because those are likely valid extension characters. Sample filter settings: all() # everything size(">20MB") # larger than 20MB !**.txt # except for .txt files **.zip | **.tar.gz | **.7z # some types of compressed files "path:bin" # files under "bin" in the project root [1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-December/109387.html [2] https://www.mercurial-scm.org/pipermail/mercurial-devel/2018-January/109729.html

fileset: split the logic for matching a size expression to a separate method This will be used in the next patch to build a simple filtering language, but where we won't have an mctx.

lfs: drop deprecated remote store config options The last of these were removed from fb-experimental in 86884a51e9aa, and we might as well clean this up before the freeze.

py3: use bytes instead of pycompat.bytestr Follow up for 35fb3367f72d. Differential Revision: https://phab.mercurial-scm.org/D1854

test-pull-r: explicitly kill server processes Differential Revision: https://phab.mercurial-scm.org/D1855

bookmarks: add bookmarks to hidden revs if directaccess config is set This patch adds support to add bookmarks to hidden revs if `experimental.directaccessi=True` config is set. A warning is also printed saying "accessing hidden changeset <revhash>". Differential Revision: https://phab.mercurial-scm.org/D1813

visibility: pass a normal repo to _getfilteredreason There is no reason to pass an unfiltered-repo to _getfilteredreason and successorssets, so use a normal repo instead. Differential Revision: https://phab.mercurial-scm.org/D1853

visibility: make the filtered message translatable Introduce a filtered message table to ease translation of these messages. Differential Revision: https://phab.mercurial-scm.org/D1852

visibility: fix a comment introduced before which is not up-to-date 265cd9e19d26 introduced a comment in _filterederror that was not updated with the latest iterations of the patch, fix the comment. Differential Revision: https://phab.mercurial-scm.org/D1851

rust: avoid redundant 'static lifetime 'static is apparently automatic for const variables. Differential Revision: https://phab.mercurial-scm.org/D1846

pull: hold wlock for the full operation when --update is used With now, the wlock is not held between the pull and the update. This can lead to race condition and make logic checking to post pull results more complicated (eg: with _afterlock).

hgweb: drop support of browsers that don't understand <canvas> (BC) Internet Explorer 8 and below need excanvas aka ExplorerCanvas to support canvas tag at all. We used to vendor the library in Mercurial, but IE8 was discontinued and all support for it ceased in January 2016. We should do the same and remove excanvas library. Apart from just cleaning up code, this will also make downstream Debian packages stop depending on libjs-excanvas, for example.

rust: add TODO about lifetime of program_name variable Per review comment in D1581. Differential Revision: https://phab.mercurial-scm.org/D1847

rust: move import of PathBuf By moving it to the single function that uses it, we eliminate a #cfg. Differential Revision: https://phab.mercurial-scm.org/D1845

perf: do not import util.queue This was added by af25237be091. But util.queue is not a module and is not importable. I guess it wasn't noticed because of demandimport. Differential Revision: https://phab.mercurial-scm.org/D1848

rust: move Cargo.lock If you do a `cargo build` in rust/, Cargo will create rust/Cargo.lock. Furthermore, the previous rust/hgcli/Cargo.lock appears to not even be consulted because the auto-generated rust/Cargo.lock varied from rust/hgcli/Cargo.lock. This commit moves Cargo.lock to where Cargo expects it to be. While we're here, bump the version of libc to the latest available. Differential Revision: https://phab.mercurial-scm.org/D1844

run-tests: fix regular expression for path test The previous regexp would match the empty string. This fixes a mistake added in 964212780daf. Differential Revision: https://phab.mercurial-scm.org/D1843

perf: add threading capability to perfbdiff Since we are releasing the GIL during diffing, it is interesting to see how a thread pool would perform on diffing. We add a new `--threads` argument to commands. Synchronizing the thread pool is a bit complex because we want to be able to reuse it from one run to another. On my computer (i7 with 4 cores + hyperthreading), I get the following data for about 12000 revisions: threads wall comb wall gain comb overhead none 31.596715 31.59 0.00% 0.00% 1 31.621228 31.62 -0.08% 0.09% 2 16.406202 32.8 48.08% 3.83% 3 11.598334 34.76 63.29% 10.03% 4 9.205421 36.77 70.87% 16.40% 5 8.517604 42.51 73.04% 34.57% 6 7.94645 47.58 74.85% 50.62% 7 7.434972 51.92 76.47% 64.36% 8 7.070638 55.34 77.62% 75.18% Compared to the feature disabled (threads=0), the overhead is negligible with the threading code (threads=1), and the gain is already 48% with two threads.

upgraderepo: select correct deltareuse depending on actions Only 'redeltafulladd' was taken into account because of a small typo.

revsetlang: add %p specifier to format list of function arguments This will be used to construct parameters passed to _matchfiles().

revsetlang: unnest inner functions from formatspec()

revsetlang: fix quoting of %ls string Before, "'" wasn't escaped appropriately. This also changes the separator '\0' to '\\0', but that's okay as a string token is unescaped.

revsetlang: catch invalid value passed to formatspec() The scope of AttributeError is narrowed because it's more likely to be triggered by mistake.

revsetlang: check incomplete revspec format character

revsetlang: check number of arguments passed to formatspec()

revsetlang: catch invalid format character with %l prefix listexp() could call argtype() with an invalid format character, but that wasn't checked before.

py3: add 8 new passing tests to the whitelist Differential Revision: https://phab.mercurial-scm.org/D1800

py3: use list() to get a list of items using dict.items() dict.items() on Python 3 returns a generator over the values of the dictionary, hence we can't delete elements while iterating over dict.items() in Python 3. Differential Revision: https://phab.mercurial-scm.org/D1799

py3: convert dict keys' to str before passing as kwargs We have pycompat.strkwargs() which converts the keys of a dict to str and returns that. Differential Revision: https://phab.mercurial-scm.org/D1798

py3: make sure we open the file to write in bytes mode Differential Revision: https://phab.mercurial-scm.org/D1797