fileset: add phase to transform parsed tree This isn't strictly necessary, but I decided to just follow the strategy of the revset parsing.

py3: whitelist another 3 tests caught by the ratchet Differential Revision: https://phab.mercurial-scm.org/D4069

testrunner: allow multiple #testcases This lets you have multiple #testcases declarations and they're taken to be different dimensions of the test, so their cross product becomes the total set of test cases. For example: #testcases obsstore-on obsstore-off #testcases manifest-flat manifest-tree $ hg rebase ... ... #if obsstore-on $ hg log ... #endif Note that this is an excellent way to slow down the test suite, so use it with care. The feature is implemented by replacing most of the "case" variables that were strings before by an array of strings with each item a different dimension of the test case. The file names are created by joining the dimensions by "#" (e.g. test-foo.t#obsstore-on#manifest-flat). Differential Revision: https://phab.mercurial-scm.org/D4049

testrunner: use "#" for "test cases" suffix in .err filename too This seems like a natural follow-up to b865bba56db1 (run-tests: update the test case name format, 2018-05-13). Differential Revision: https://phab.mercurial-scm.org/D4052

resolve: add confirm config option This config setting gives a functionality to confirm before it re-merge all unresolved files. If this config is enabled, when you run 'hg resolve --all' it will prompt with a msg "re-merge all unresolved files (yn)?" To enable this functionality: [commands] resolve.confirm = True Differential Revision: https://phab.mercurial-scm.org/D3988

revlog: remove side effect from failed nt_init() If nt_init() successfully allocates memory for the node tree but then runs out of memory while trying to insert nullid into it, it will leave the node tree pointer set on the index object. That means that future node tree operations will think that the tree is properly initialized. It seems very unlikely to make a difference in practice (if nt_init() runs out of memory, not much else will probably work), but since I spotted it, I figured I might as well fix it. Differential Revision: https://phab.mercurial-scm.org/D4028

revlog: remove micro-optimization for looking up only nullid index_find_node() would call nt_find() before initializing the node tree. nt_find() would then return -2 unless the requested revision was the null revision. I can't imagine what scenario that is optimizing for, and doing the initialization earlier makes the code simpler and easier to follow, so that's what this patch does. Differential Revision: https://phab.mercurial-scm.org/D4027

revlog: remove unnecessary output parameter from node_check() The "nodelen" output parameter is always set to 20 if the function returns successfully. Differential Revision: https://phab.mercurial-scm.org/D4026

narrow: move status-filtering to core and to ctx One of my recent changes from repo.status(ctx1, ctx2) to ctx1.status(ctx2) broke some of our Google-internal tests. The problem turned out to be that the narrow extension was overriding repo.status() to make it filter out paths outside the narrowspec. When I changed to ctx1.status(ctx2), then that filtering obviously got lost. ctx.status() seems like a better method to do the filtering in, so this patch moves the filtering into that method, thereby also moving it out of the extension and into core. Differential Revision: https://phab.mercurial-scm.org/D4068

amend: support "history-editing-backup" config option Now, amend is in the list of those history editing commands which support `history-editing-backup` config option. If you don't want to store any backup then just use this config. [ui] hisotry-editing-backup = False Current status of list of history editing commands which support this config: 1. histedit 2. rebase 3. amend Differential Revision: https://phab.mercurial-scm.org/D3968

rebase: move "backup" flag to rebaseruntime It was getting messy to populate "backup" flag to calls of `_finishrebase()` and `_prepareabortorcontinue`, so made some changes to move "backup" flag to rbsrt. Differential Revision: https://phab.mercurial-scm.org/D4055

i18n: format warning of hggettext in standard compiler error style Now, hggettext specific warning messages are formatted in: FILENAME:LINENO:MESSAGE This allows editors to jump into corresponded line easily.

i18n: omit redundant translatable synopsis text to avoid xgettext warning This empty translatable synopsis text causes xgettext warning below: Empty msgid. It is reserved by GNU gettext: gettext("") returns the header entry with meta information, not the empty string. This "synopsis" argument of @command annotation is omitable.

i18n: avoid substitution of PYFILES at runtime for readability of output This substitution decreases readability of "make update-pot" output, because PYFILES consists of many files. This patch makes "make update-pot" show "find mercurial hgext doc -name '*.py'" instead of many *.py files at runtime.

util: make new timedcmstats class Python 3 compatible

fix: add a monkey-patchable point after all new revisions have been committed Differential Revision: https://phab.mercurial-scm.org/D4048

help: add quotes to a few commands we point to I didn't know that 'hg help "revsets.x or y"' was valid syntax, so the quoting is extra useful here to make it clear that that is an actual command. Differential Revision: https://phab.mercurial-scm.org/D4059

linelog: port to Python 3 Differential Revision: https://phab.mercurial-scm.org/D4051

exchange: move simple narrow changegroup generation from extension The narrow extension completely replaced the function generating the changegroup part when a narrow changegroup was requested. Previous commits have taught the in-core changegroup code how to filter files based on a matcher. This commit teaches the in-core bundle2 part generation code to construct a matcher based on arguments. It will also emit a bundle2 part describing the narrow spec. I believe the changegroup part generation code in the narrow extension is now limited to ellipsis serving mode. i.e. core is now capable of narrow changegroup generation when ellipsis mode is disabled. Differential Revision: https://phab.mercurial-scm.org/D4014

exchange: make narrow ACL presence imply narrow=True And refactor the logic for determining when to invoke our custom changegroup part function so it is only conditional on narrow being set. This makes it more obvious under which conditions we should invoke the custom implementation. Also use raw strings so **kwargs works on Python 3. Differential Revision: https://phab.mercurial-scm.org/D4013

changegroup: inline prune() logic from narrow prune() needs to ellide manifests that aren't part of the narrow matcher. The code is violating storage abstractions, so a comment has been added. Keep in mind the impetus for moving this code to core is so changegroup code can be refactored to be storage agnostic. Differential Revision: https://phab.mercurial-scm.org/D4012

fileset: extract language processing part to new module (API) I'll add a couple more functions that work on parsed tree. % wc -l mercurial/fileset*.py 559 mercurial/fileset.py 135 mercurial/filesetlang.py 694 total

fileset: flatten 'or' nodes to unnest unionmatchers This also makes it easier to compile a union of basic patterns into a single regexp pattern.

fileset: flatten arguments list Just prepares for flattening 'or' nodes. This change would have no impact on performance.

debugfileset: add option to show matcher representation

debugfileset: backport --show-stage option from debugrevspec I'll add some static optimizations to fileset.

lfs: remove callstatus property from 'lfs()' fileset It was added at 91aac8e6604d, but is no longer needed since a fileset expression is now compiled into an "open" matcher. See ff5b6fca1082 for details.

rebase: support "history-editing-backup" config option If you don't want to store any backup while rebasing, you can use `history-editing-backup` config option. [ui] history-editing-backup = # True or False Current status of list of commands which supports this config: 1. histedit 2. rebase Differential Revision: https://phab.mercurial-scm.org/D3887

extensions: add detailed loading information This lets you track down what exactly is happening during extension loading, and how long various steps took.

util: create a context manager to handle timing The context manager is pulled out of the timed decorator function, and refactored to provide a stats instance, with added tests.

linelog: fix import statements to pass the import checker on py3 Differential Revision: https://phab.mercurial-scm.org/D4050

linelog: add a Python implementation of the linelog datastructure This datastructure was originally developed by Jun Wu at Facebook, inspired by SCCS weaves. It's useful as a cache for blame information, but also is the magic that makes `hg absorb` easy to implement. In service of importing the code to Mercurial, I wanted to actually /understand/ it, and once I did I decided to take a run at implementing it. The help/internals/linelog.txt document is the README from Jun Wu's implementaiton. It all applies to our linelog implementation. Differential Revision: https://phab.mercurial-scm.org/D3990