This is an archive of the discontinued Mercurial Phabricator instance.

Differential D8770

relnotes: add release notes for relevant changes I did since the 5.4 release
ClosedPublic

Authored by mjacob on Jul 20 2020, 7:23 PM.

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pulkit
Group Reviewers
hg-reviewers
Commits
rHGfc54f52779dd: relnotes: add release notes for relevant changes I did since the 5.4 release
rHG7bac4e750f76: relnotes: add release notes for relevant changes I did since the 5.4 release
Summary

After having written the notes, I realized that the added points contain changes
that were part of the 5.4.2 release. These were never included in any release
notes. I asked on IRC whether they should be added to this file or not, but
didn’t get an answer to this question. If they should not be added here, I can
remove them.

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rHG Mercurial
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Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.

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PathPackages
Mrelnotes/next (33 lines)

Diff 22048

relnotes/next

* The core of some hg operations have been (and are being) * The core of some hg operations have been (and are being)
implemented in rust, for speed. `hg status` on a repository with implemented in rust, for speed. `hg status` on a repository with
300k tracked files goes from 1.8s to 0.6s for instance. 300k tracked files goes from 1.8s to 0.6s for instance.
This has currently been tested only on linux, and does not build on This has currently been tested only on linux, and does not build on
windows. See rust/README.rst in the mercurial repository for windows. See rust/README.rst in the mercurial repository for
instructions to opt into this. instructions to opt into this.
* An experimental config `rewrite.empty-successor` was introduced to control
what happens when rewrite operations result in empty changesets.
== Bug Fixes ==
* For the case when connected to a TTY, stdout was fixed to be line-buffered
on Python 3 (where it was block-buffered before, causing the process to seem
hanging) and Windows on Python 2 (where it was unbuffered before).
* Subversion sources of the convert extension were fixed to work on Python 3.
* Subversion sources of the convert extension now interpret the encoding of
URLs like Subversion. Previously, there were situations where the convert
extension recognized a repository as present but Subversion did not, and
vice versa.
* The empty changeset check of in-memory rebases was fixed to match that of
normal rebases (and that of the commit command).
* The push command now checks the correct set of outgoing changesets for
obsolete and unstable changesets. Previously, it could happen that the check
prevented pushing changesets which were already on the server.
== Backwards Compatibility Changes == == Backwards Compatibility Changes ==
* Mercurial now requires at least Python 2.7.9 or a Python version that * Mercurial now requires at least Python 2.7.9 or a Python version that
backported modern SSL/TLS features (as defined in PEP 466), and that Python backported modern SSL/TLS features (as defined in PEP 466), and that Python
was compiled against a OpenSSL version supporting TLS 1.1 or TLS 1.2 was compiled against a OpenSSL version supporting TLS 1.1 or TLS 1.2
(likely this requires the OpenSSL version to be at least 1.0.1). (likely this requires the OpenSSL version to be at least 1.0.1).
* The `hg perfwrite` command from contrib/perf.py was made more flexible and * The `hg perfwrite` command from contrib/perf.py was made more flexible and
changed its default behavior. To get the previous behavior, run `hg perfwrite changed its default behavior. To get the previous behavior, run `hg perfwrite
--nlines=100000 --nitems=1 --item='Testing write performance' --batch-line`. --nlines=100000 --nitems=1 --item='Testing write performance' --batch-line`.
* The absorb extension now preserves changesets with no file changes that can
be created by the commit command (those which change the branch name
compared to the parent and those closing a branch head).
== Internal API Changes == == Internal API Changes ==
* logcmdutil.diffordiffstat() now takes contexts instead of nodes. * logcmdutil.diffordiffstat() now takes contexts instead of nodes.
* The `mergestate` class along with some related methods and constants have * The `mergestate` class along with some related methods and constants have
moved from `mercurial.merge` to a new `mercurial.mergestate` module. moved from `mercurial.merge` to a new `mercurial.mergestate` module.
* The `phasecache` class now uses sparse dictionaries for the phase data. * The `phasecache` class now uses sparse dictionaries for the phase data.
New accessors are provided to detect if any non-public changeset exists New accessors are provided to detect if any non-public changeset exists
(`hasnonpublicphases`) and get the correponsponding root set (`hasnonpublicphases`) and get the correponsponding root set
(`nonpublicphaseroots`). (`nonpublicphaseroots`).
* The `stdin`, `stdout` and `stderr` attributes of the `mercurial.pycompat`
module were removed. Instead, the attributes of same name from the
`mercurial.utils.procutil` module should be used, which provide more
consistent behavior across Python versions and platforms.