mercurial-7.1

[Bruce Dubbs]

New point version.

[Bruce Dubbs]

Wait until June. There have been 8 updates so far this year (127 days). Change to a schedule of once a month.

[Douglas R. Reno]

New Features

    share: add a --share-source argument to hg root

    fastexport: make it possible to ignore .gitmodules in the source repository

Many Rust-related changes

    rust-revset: support resolving wdir()

    rhg: allow --repo as abbreviation for --repository

    rhg: support basic aliases

    rhg: support -0 flag in rhg files

    rust-annotate: support -Tjson

    rust-annotate: support --rev wdir()

    rust-annotate: allow --follow

    rhg: document known rough edges for the sake of users and packagers

Better profiling options, Rust tracebacks and tracing framework

    profiling: support writing profiles to a directory

    tracing: add a way of calling the Rust tracing framework from Python

    rust-errors: add support for a runtime-configured backtrace

    dispatch: enable Rust traceback processing when using --tracing

Improvement to debug commands

    debugcommands: bring over functionality from debugshell extension

    debugindexdot: add flags for more control over graph

Other noteworthy performance work

    rhg annotate is up to 61 times faster in certain pathological cases

    Improved performance of the low-level Rust storage primitive

    Removed a lot of syscalls when listing things from storage with high-level APIs

    merge: save one status in certain cases

    merge: improve detection of subrepos in Rust fast path

    Improved the delta encoding algorithm by avoiding computation, using better 
heuristics and folding deltas

    hgtags-fnode-cache: fast path full warm when no tag exists

Developer tooling

    setup-dev-tools: add a first version of script that install dev tools

    setup-dev-tools: add make target to format the working copy using fix

    setup-dev-tools: add make target to format the current stack using fix

Default Format Change

No default format changes this version.

New Experimental Features

Following last version’s “update from null”, this is a Rust version of the update logic 
when all tracked files are clean and we are not merging. It is on by default if you have 
Rust enabled: if you encounter any problems use rust.update-from-clean=no to disable it, 
and please let us know what the problem is.

    rust: add an “update from clean” fast-path

New flags are being added to the revlog and transmitted over the network to help with 
copytracing and delta encoding.

    revlog: introduce a FLAG_FILELOG_META revlog flag and requirements

    changegroup: use REVIDX_HASMETA in changegroup ‘04’

    revlog: add a delta-info-flag requirements

    changegroup: transmit snapshot level information in cg4

    delta-search: add a option to ignore suspicious delta

A temporary store encoding that should only exist for one version of Mercurial, until we 
get a better solution to a very specific problem that you probably don’t have.

    store: add a first version of a “plain” encoding

    rust: add support for plain encoding

Bug Fixes

    diff: fix function name context detection (issue6965)

    merge: filter ambiguous files and/or wait for fs tick in applyupdates

    rust: handle censored revisions according to the config

    changelog: also disable sparse-revlog when disabling generaldelta

    rust-repo: unconditionally load the dirstate before loading the changelog

    revlog: fix a bytes vs str crash when emitting a deprecation warning

    rust-annotate: prefix abort messages with “abort:”

    debugshell: return an exit code 1 on exception

    dirstate: properly purge the cwd cache between commands

    commandserver: always restore working directory (issue6992)

    dispatch: always chdir back in _getlocal

    dispatch: chdir back to original cwd in _dispatch

    ui: avoid a str interpolation into bytes crash in fixconfig()

    contrib-hgk: use plain ascii (C) instead of latin1 symbol”

Backwards Compatibility Changes

    fastexport: add support for Git subrepositories (BC)

    pycompat: drop support for Python 3.8 (BC)

    annotate: use exit code 255 for missing files

    contrib: delete debugshell extension

    rust: update minimum Rust supported version to 1.85.1 for the 7.1 cycle

Internal API Changes

    revlog: add “writable” parameter to revlog

    revlog: enforce that filelog get the writable parameter passed

Miscellaneous

As with every release for a while, there were a ton of patches helping with adding 
typing information to our Python code, and catching bugs while doing so. The Pytype CI 
job itself was upgraded to be more helpful.

We’ve migrated our Rust<->Python bridge from using the deprecated rust-cpython to the 
new standard PyO3.

    rust: remove hg-cpython

    rust: move from log to tracing-based logging

We’ve upgraded our CI to be much easier to update, more up-to-date and use smaller images

    ci: switch the “checks” job to a “v3.0” images

Other mentions

    debugnodemap: print a message when no action was specified

    pyproject: SPDX license expression and license-files (PEP 639)

    apache-server: update the setup from Wheezy to Buster

    apache-server: update the README, add Anubis, add notes about ProxyPass

    rust-pyo3: raise proper Exceptions in more cases

    rust-dependencies: upgrade which dependency

    rust: move README from rst to md

    contrib: add support for rhel10


Mercurial 7.0.3

    convert: correctly convert sub-hour timezones from Git source

    fastexport: fix error message when UTC offset is not a multiple of minutes

    hgdemandimport: exclude _contextvars (newly imported from threading)

    procutil: actually silence backgrounded process stdio on Windows when asked

    bundlespec: fix error in help text

    branch: pass correct set of files to memctx() in case of merge (issue6972)

    branch: recreate changeset of top of new parents if they were replaced

    fix: stop adding unexpected extra requirements to stream clones

    crecord: handle bad regexes in search

    config: move the –shared and –non-shared flag out of experimental

    Test harness improvements

    More modern Python fixes

Mercurial 7.0.2

    rust: document a pipx install

    keepalive: don’t reuse a connection to the proxy for a different host

    httppeer: don’t put an int in headers

    dirstate: fix panic when validating dirstate on write

    reject_new_heads: handle None being passed as node

    rust-revlog: detect and fix nodemap lagging behind its revlog

    General improvements to the CI

[Douglas R. Reno]

Fixed at 9d2db2b2431de2f1bc819e216f11be536c189fe7