simplemerge: simplify code now that we always write to a context There's no need for an `out` abstraction between files and contexts anymore. Differential Revision: https://phab.mercurial-scm.org/D383

simplemerge: make context parameters non-optional Also update the function docstring. Differential Revision: https://phab.mercurial-scm.org/D382

simplemerge: stop accepting, and passing, file parameters Differential Revision: https://phab.mercurial-scm.org/D381

simplemerge: stop reading from, and writing to, files We now use contexts first for everything and also pass them everywhere. Differential Revision: https://phab.mercurial-scm.org/D380

simplemerge: use context paths for default labels instead of file paths This is the last place we used the filepath arguments without first using the context version. Differential Revision: https://phab.mercurial-scm.org/D379

contrib: make simplemerge script pass context-like objects `simplemerge()` will soon require context-like objects to work. Create a simple context-like object that wraps the requested files and can be passed to the new API. Differential Revision: https://phab.mercurial-scm.org/D378

simplemerge: use `ctx.decoddeddata()` instead of `repo.wreaddata` This eliminates the need for the `repo` object. Differential Revision: https://phab.mercurial-scm.org/D435

context: add `decodeddata()` to basefilectx This will be used as an abstraction by simplemerge to get the data it used to read off the filesystem. Differential Revision: https://phab.mercurial-scm.org/D434

bookmarks: allow renaming active bookmark using '.'

i18n: update check-translation script to pass import checker

demandimportpy3: update to pass import checker

contrib: always treat importlib.* as stdlib

hg: update top-level script to use modern import conventions

simplemerge: update to conform with modern import conventions

contrib: inform import checker that __builtin__ is a thing

contrib: allow importing "symbols" from mercurial

hgperf: update to conform with import style checks

contrib: update hg-ssh to conform with import style checks

contrib: have import-checker work mostly with native strings for mod names Module names are a bit awkward to deal with portably otherwise.

bundlerepo: move bundle2 part handling out to a function This moves the bundle2 part handling for bundlerepo out to a separate function so extensions can participate in bundlerepo setup when using bundle2 bundles. Differential Revision: https://phab.mercurial-scm.org/D290

bundle2: seek part back during iteration Previously, iterparts would yield the part to users, then consume the part. This changed the part after the user was given it and left it at the end, both of which seem unexpected. Let's seek back to the beginning after we've consumed it. I tried not seeking to the end at all, but that seems important for the overall bundle2 consumption. This is used in a future patch to let us move the bundlerepo bundle2-changegroup-part to be handled entirely within the for loop, instead of having to do a seek back to 0 after the entire loop finishes. Differential Revision: https://phab.mercurial-scm.org/D289

bundlerepo: move temp bundle creation to a separate function A future patch will refactor certain parts of bundlerepo initiatlization such that we need to create temp bundles from another function. Let's move this to another function to support that. Differential Revision: https://phab.mercurial-scm.org/D288

exchange: don't attempt phase exchange if phase-heads was in bundle The Mercurial core server doesn't yet include phase-heads parts in the bundle, but our Google-internal server wants to do that. Unfortunately, the usual exchange still happens even if phase-heads part is included (including the short-circuited one for old/publishing servers). That means that even if our server (again, the Google-internal one, but also future Mercurial core servers) includes a phase-heads part to indicate that some heads should be drafts, that would still get overwritten by the phase updating that happens after. So let's fix that by marking the phase step done if we receive at least one phase-heads part in the bundle. Differential Revision: https://phab.mercurial-scm.org/D440

pushvars: do not mangle repo state Setting `repo._shellvars` works but is not a clean way to pass the pushvars information from the push command to the exchange operation. Therefore change it to actually pass `pushvars` as a push operation argument instead. This makes third party extension like remotenames easier to support pushvars cleanly. The key value parsing and verification code has been moved to a lower level so it's harder to be bypassed and easier to be used in remotenames which could replace `push` command entirely. Differential Revision: https://phab.mercurial-scm.org/D423

record: fix revert -i for lines without newline (issue5651) This is a regression caused by 66117dae87f9. Code prior to 66117dae87f9 seems to miss the "\ No newline at end of file" line. Differential Revision: https://phab.mercurial-scm.org/D528

morestatus: check whether the conflict message is None before printing There are cases like bisect when the conflict message can be None. So we make sure that we don't print None in that case. Thanks to Martin for catching this. Differential Revision: https://phab.mercurial-scm.org/D461

bundle2: fixed usage of an attribute that was removed in py3k Differential Revision: https://phab.mercurial-scm.org/D482

releasenotes: add check flag for use of admonitions and its validity While using releasenotes extension, we will be using admonitions in commit messages. The check (-c) flag will look for an admonition within the message. If it exists, it will verify if it is stated under default or custom admonition. The check fails if the admonition is not present in any of them. It also suggests similar admonitions in case the admonition is invalid. Differential Revision: https://phab.mercurial-scm.org/D368

copies: fix misaligned lines

copies: fix typo in comment "will not be limited" was meant to be "will not be visited". I missed this when writing the original graft-through-rename patch series.

python3: whitelist test-imports-checker.t, which now passes

contrib: make import checker always think in terms of bytes The doctests now do some regrettable things, but they'll always work since we're dealing with ASCII module names etc.

contrib: work around some modules not existing on Py3 in import checker

tests: stop using old except syntax in test-bundle2-format

tests: update test-archive to always use hashlib We don't need the fallback to the old modules anymore.

md5sum: assume hashlib exists now that we're 2.7 only

undumprevlog: update to valid Python 3 syntax I didn't do anything to ensure correctness here, just enough to avoid tracebacks in the import checker, which uses the native ast module to try and parse all our Python files.

tests: fixed a bytes/unicode confusion in the test runner Differential Revision: https://phab.mercurial-scm.org/D483

run-tests: remove unused pygments token type Differential Revision: https://phab.mercurial-scm.org/D478

run-tests: also highlight .py test files in summary messages With the .t files highlighted, it's very easy to not even notice failed .py tests. Differential Revision: https://phab.mercurial-scm.org/D471

test-revset: make it work with chg chg currently triggers `reposetup` as a side effect of `hg serve` command. Therefore change the test to not output during `reposetup` to be compatible with chg. Differential Revision: https://phab.mercurial-scm.org/D455

copies: use intersectmatchers() in non-merge p1 optimization This enables the optimization introduced by d4247c306d82 for non-rebase cases. Before, the match couldn't be narrowed if it was e.g. alwaysmatcher. The logic is copied from bd56bea5ecf8.

run-tests: pre instantiate pygments objects Pre instantiate pygments objects to minimize overhead (cf. 20436925e080)

merge with stable

rebase: only change self.state when collapsing in _finishrebase When the code executes to _finishrebase, self.state should be populated with correct destinations and do not need to be written to a node. The code was introduced by 8dc45c9059, which seems to avoid setting state values to None but it didn't provide more details. Differential Revision: https://phab.mercurial-scm.org/D346

rebase: choose merge base without unwanted revisions Previously, when there are 2 merge base candidates, we choose p1 blindly, which may make the merge result to have "unwanted content". This patch makes rebase smarter - choose a merge base that does not have "unwanted revs" if possible. Since we don't really have a good solution when there are "unwanted revs", abort in that case. Differential Revision: https://phab.mercurial-scm.org/D340

templatekw: choose {latesttag} by len(changes), not date (issue5659) As Augie reported in the bug, the current heuristic of choosing the best tag of a merge commit by taking the one with newest tag (in terms of tagging date) currently fails in the Mercurial repo itself. Copying the example from Yuya: $ hg glog -T '{node|short} {latesttag}+{latesttagdistance}\n' \ -r '4.2.3: & (merge() + parents(merge()) + tag())' o 02a745c20121 4.2.3+5 |\ | o 86aca74a063b 4.2.3+4 | |\ | | o e6d8ee3c9ec3 4.3-rc+109 | | | | | ~ o | a3ce07e2dde5 4.3.1+2 : | o | 3fee7f7d2da0 4.3.1+0 |/ o 98e990bb7330 4.2.3+3 |\ | ~ o 506d7e48fbe6 4.2.3+2 : o 943c91326b23 4.2.3+0 | ~ It seems to me like the best choice is the tag with the smallest number of changes since it (across all paths, not the longest single path). So that's what this patch does, even though it's costly. Best-of-5 timings for Yuya's command above shows a slowdown from 1.293s to 1.610s. We can optimize it later. Differential Revision: https://phab.mercurial-scm.org/D447

tests: use graph log in {latesttag} tests The tests are much easier to read if one does not have to re-read the setup part all the time to understand the graph shape. Differential Revision: https://phab.mercurial-scm.org/D446