tests: add size and hash for Python 3 test-archive.t now passes on Python 3.7.1. Differential Revision: https://phab.mercurial-scm.org/D5648

httppeer: use %s for formatting This prevents a b'' from appearing in Python 3 output. We keep the single quotes for backwards compatibility. Differential Revision: https://phab.mercurial-scm.org/D5647

tests: add b'' to notcapable This fixes some exceptions in a few tests. # skip-blame just b'' prefixes Differential Revision: https://phab.mercurial-scm.org/D5646

tests: add b'' to test-missing-capability.t The test now passes on Python 3. # skip-blame just b'' prefixes Differential Revision: https://phab.mercurial-scm.org/D5645

fuzz: exercise more of the lazymanifest code Differential Revision: https://phab.mercurial-scm.org/D5643

fuzz: restrict manifest input size Again, let's keep the fuzzer from getting excited about huge inputs. Differential Revision: https://phab.mercurial-scm.org/D5642

fuzz: exercise more of the revlog API I noticed in the coverage report that we didn't have much coverage in revlog.py. Let's try and get some of the more interesting bits tested by the fuzzer. I ran this locally for a few minutes to verify that I appear to be calling the various functions in reasonable ways. Differential Revision: https://phab.mercurial-scm.org/D5641

fuzz: don't allow enormous revlog inputs either I'm about to make the fuzzer do more, and without this it was getting enthusiastic about large (and therefore slow) inputs that I don't think buy us much. Differential Revision: https://phab.mercurial-scm.org/D5640

ui: remove unreachable branches and function calls from write() (issue6059) This is at least faster than ui.write() of 4.8.2. $ HGRCPATH=/dev/null hg files -R mozilla-central --time >/dev/null 4.8.2: time: real 2.340 secs (user 2.310+0.000 sys 0.020+0.000) 4.9rc0: time: real 2.580 secs (user 2.550+0.000 sys 0.020+0.000) this: time: real 2.230 secs (user 2.210+0.000 sys 0.020+0.000) Maybe the formatter should own a resolved write() function because it will just call dest.write(msg) most of the time, but that would be too much for stable.

ui: inline _writenobuf() into write() due to performance issue I'll remove redundant conditions later in this series.

ui: inline _write() into write() due to performance issue I'll remove redundant conditions later in this series.

ui: optimize buffered write with no label This was spotted while making fastannotate faster again after ditching its own formatter. Since I'm going to inline _write() into ui.write(), I decided to include this patch in this series. Here, the cost of '(self.label(a, label) for a in args)' was significant in hot loops.

partialdiscovery: avoid `undecided` related computation sooner than necessary Changeset 1d30be90c move the update of the `undecided` set within the `partialdiscovery` object in order to clarify the API. The update to the `undecided` set was unconditional in 1d30be90c and the first access to the `self.undecided` property triggered the initial computation of the set of undecided revisions. As a result, the set was computed much earlier, at a time where less information is available, immediately followed by an update of this set to remove common revisions. To fix this regression, we ignore the `undecided` related logic in `addcommons` when that `undecided` set has not been computed yet. Code that actually needs to know the `undecided` set will trigger its computation later. The change has no effects on semantic because the initial computation `undecided` set takes all knowns `common` into account. Example performance running `hg debugdiscovery` from a pypy repo missing 10 changesets: 870a89c6909d: 52.3ms (regression parent) 1d30be90c9dc: 72.0ms (regression) 5a5f504a7175: 64.8ms (this fix parent) this fix: 52.6ms

revlog: fix resolution of revlog version 0 This partially backs out cecf3f8bccd3, "revlog: always process opener options." My understanding is that if there's no "revlog1" nor "revlog2" in .hg/requires, the repository should stick to the v0 format. The reasoning is briefly described in 31a5973fcf96, "revlog: get rid of defversion." Maybe we can drop support for missing opener options, but I didn't do that in this patch.

merge with stable

rust: add comment about lack of wdirrev handling If hg is compiled with rust support, 'only(wdir())' crashed as "rustext.GraphError: ('ParentOutOfRange', 2147483647)", which should instead say "abort: working directory revision cannot be specified."

templatekw: fix crash on multiple latesttags resolution at wdir (issue6055) It appears not easy to fix only() to support wdir(), so this patch works around the issue by getlatesttags(). The "+1" after len(changes) doesn't matter since ctx never changes while sorting. It's just for clarity.

test-template-keywords: add test for {latesttag} of wdir() revision It's probably broken since fb672eac2702, "templatekw: choose {latesttag} by len(changes), not date (issue5659)". only() doesn't support wdir.

narrow: fix crash when restoring backup in legacy repo Using --addremove when committing in an old repo (before we started keeping .hg/narrowspec.dirstate) results in a crash. The test case modified in this patch would crash like this: abort: $ENOENT$ The issue is that when the dirstateguard is aborted, it tries to restore the backup of .hg/narrowspec.dirstate. However, since we were in an old repo, that file did not get created when the dirstateguard was created. Note that the dirstateguard is not used unless --addremove is passed. This patch fixes the bug by making restorewcbackup() not fail if the backup doesn't exist. I also made clearwcbackup() safe, just in case. Differential Revision: https://phab.mercurial-scm.org/D5634

revset: introduce an internal `_rev` predicate for '%d' usage In 24a1f67bb75a, we aligned "%d" behavior on "%ld" one, invalid revisions got silently ignored. However, soon after in 8aca89a694d4 and 26b0a7514f01, a side effect changed the behavior of "%ld" to no longer silently filter invalid revisions. After discussion on the mailing list, it was decided to align on the new %ld behavior: https://www.mercurial-scm.org/pipermail/mercurial-devel/2019-January/127291.html This changeset introduce a '_rev()' predicated that keep the benefit from 24a1f67bb75a while enforcing a more strict checking on the inputs.

mmap: backed out changeset 875d2af8cb4e There have been concrete and theoretical issues raised, this will need more work during the next cycle.

mmap: backed out changeset 74a9f428227e There have been concrete and theoretical issues raised, this will need more work during the next cycle.

help: document the minimumhgversion variable for extensions

help: modernize the example for command registration

Added signature for changeset 593718ff5844

Added tag 4.9rc0 for changeset 593718ff5844

merge default into stable for 4.9 release

update: fix edge-case with update.atomic-file and read-only files We used to create the tempfile with the original file mode. That means creating a read-only tempfile when the original file is read-only, which crash if we need to write on the tempfile. The file in the working directory ends up being writable with and without the atomic update config, so the behavior is the same.

scmutil: drop unreachable except clause socket.error is a subclass of IOError, which we catch higher up. It seems to have been this way since 020a896a5292 (dispatch: sort exception handlers, 2009-01-12), so let's celebrate the 10 year anniversary (a few days late) of it being wrong by deleting it. Differential Revision: https://phab.mercurial-scm.org/D5626

tests: suppress "Checked out 1 paths of <hash>" from modern git test-convert-git.t is failiing since git commit 0f086e6dca (checkout: print something when checking out paths, 2018-11-13). Suppress the new output by disambiguating the arguments with a "--" separator. Differential Revision: https://phab.mercurial-scm.org/D5625