tests: use the right python when running dummyssh for narrow some plateform no longer have a `python` executable. Differential Revision: https://phab.mercurial-scm.org/D9504

copies: avoid materializing a full directory map during copy tracing Materializing a full copy of every directory in a treemanifest repo can be quite expensive, even with a narrow matcher. For flat manifest repos, this should be equivalent - it will still materialize (and cache) a dict of all of the dirs inside of the manifest object, we just don't get a copy of it. In a repo I have here, this brings the time for a simple rebase from 11.197s to 4.609s. Differential Revision: https://phab.mercurial-scm.org/D9503

rebase: clear merge state when aborting in-memory merge on dirty working copy Differential Revision: https://phab.mercurial-scm.org/D9509

tests: show that in-memory rebase leaves state when working copy is dirty When in-memory rebase falls back to on-disk rebase, it checks if the working copy is dirty. If it is, it aborts the rebase. However, it leaves the rebase state on disk. I broke it in feffeb18d412 (rebase: teach in-memory rebase to not restart with on-disk rebase on conflict, 2020-09-18). Differential Revision: https://phab.mercurial-scm.org/D9508

helptext: document share safe functionality in `hg help config -v` If share safe functionality is enabled, we read `.hg/hgrc' of shared source. Differential Revision: https://phab.mercurial-scm.org/D9413

helptext: mention in `hg help config` that `.hg/hgrc-not-shared` is consulted Recently we added `.hg/hgrc-not-shared` which is a config file which won't be shared with shares when share-safe mode is enabled. Irrespective of whether we are using share-safe or not, we consult this file now. Let's document that. Differential Revision: https://phab.mercurial-scm.org/D9412

share: add documentation about share-safe mode in `hg help -e share` Differential Revision: https://phab.mercurial-scm.org/D9411

helptext: update first hg version when share-safe will be released I authored the patch which added the helptext before 5.6 release hoping that my patches will make it. However they didn't before the release and were pushed after the release only. Differential Revision: https://phab.mercurial-scm.org/D9410

share: show warning if share is outdated while source supports share-safe Previous patches in the series and some which are already committed implements share safe functionality where config and requirements will be shared too. Rolling this feature has a problem that existing shares may never upgrade as they will never learn about the new config. To help the transition, we show a warning message if the share source supports share-safe mechanism. This provides the source repo ability to upgrade and pass on the message to shares that you should reshare and upgrade too. Differential Revision: https://phab.mercurial-scm.org/D9369

upgrade: add support to downgrade share safe mode In previous patch we added support to upgrade current repository to use share safe mode. This patch adds support to downgrade to remove share-safe mode. Differential Revision: https://phab.mercurial-scm.org/D9358

upgrade: add support for experimental safe share mode Recently we introduce the share-safe functionality which makes shares share requirements and config of share source. This patch adds support to `debugupgraderepo` command to upgrade repository to share-safe mode when `format.exp-share-safe` config is enabled. Differential Revision: https://phab.mercurial-scm.org/D9144

chgserver: catch RepoError while loading configuration Recent share safe work introduced functionality to read share source config file on dispatch. This can result in RepoError while reading config file as the shared source might not be present. `test-share.t#safe` was failing with chg earlier because of this. Differential Revision: https://phab.mercurial-scm.org/D9462

registrar: clarify the documentation about some byte strings being required I *thought* these needed to be byte strings, but didn't remember and had to search out examples. Differential Revision: https://phab.mercurial-scm.org/D9489

match: skip walking up the directory hierarchy if the number of pats are small Previously, we would receive a path like abc/def/ghi and "walk up" the directory hierarchy, checking abc/def, abc, and `b''` to see if they were in the set of prefixes that this matcher covered. We did this indiscriminately - we generated all of these paths even if the set of prefixes the matcher covered was completely empty, which is the case for a lot of repos at my company (the narrow matcher we use is usually non-recursive). This brings the time for a rebase in one of my repos from 12.20s to 10.87s. In this particular repo, this is entirely due to the `len(prefix_set) == 0` check, as I do not have any recursive patterns in the narrowspec. Differential Revision: https://phab.mercurial-scm.org/D9488

relnotes: document better memory use for unbundle Differential Revision: https://phab.mercurial-scm.org/D9481

upgrade: add an explicite --filelogs arguments This make it possible to select no revlog for upgrade, which is useful for some upgrade target or in some specific cases (eg: persistent-nodemap or share-safe update). Differential Revision: https://phab.mercurial-scm.org/D9468

rhg: add a test for --rev with a hex changeset ID And fix error message formatting Differential Revision: https://phab.mercurial-scm.org/D9478

upgrade: move optimisation to something more declarative This is not great yet, but still better than the previous state. This get use one step closer to having all the possible "actions" clearly declared and moved in a dedicated module. Differential Revision: https://phab.mercurial-scm.org/D9475

upgrade: capitalize the `deficiency` constant I am reworking this code and moving to the current naming scheme help readability. Differential Revision: https://phab.mercurial-scm.org/D9474

upgrade: capitalize the `deficiency` constant I am reworking this code and moving to the current naming scheme help readability. Differential Revision: https://phab.mercurial-scm.org/D9473

tests: set old git default branch name for compatibility Git's default branch name has changed on my machine (from "master" to "main"). Let's set the old name in our tests so we're compatible with both defaults (and maybe still compatible with Git versions that don't know about the config option). Differential Revision: https://phab.mercurial-scm.org/D9470

heptapod-ci: automatically refresh existing phabricator Diff on push If a changeset have been submitted to Phabricator and a new version is pushed to heptapod, we should refresh the state on Phabricator. If we do not do this, they are a risk of an older version being applied from Phabricator. In this situation content-divergence will be (rightfully) detected by evolution. We only refresh the Diff if the test pass, to avoid updating Phabricator with broken content. Differential Revision: https://phab.mercurial-scm.org/D9451

contrib: add a small script to refresh all diff in the current stack This will be useful to introduce automatic refresh through heptapod. Differential Revision: https://phab.mercurial-scm.org/D9460

tests: conditionalize return code on chg in test-config.t If there is any error while reading config, chg just returns 255 instead of 30. It seems to me that we cannot conditionalize only return codes in output using trailing `(chg !)` and hence used testcases. The test was failing with chg but after this patch, it now passes. Differential Revision: https://phab.mercurial-scm.org/D9463

tests: update test-chg.t with output change Since this part of tests is only run with chg, hence it didn't get updated when the error message changed. Differential Revision: https://phab.mercurial-scm.org/D9414

rust-format: pin the formatted to a specific nightly version Version 1.50 change the way rust-format behave. We pin the version for now, we can figure out something better later.

copies: clarify the return of _merge_copies_dict I misused that function twice in the past few days, so lets clarify the API. Differential Revision: https://phab.mercurial-scm.org/D9418

copies: avoid unwanted side effect from one branch to another Without this copy, change in a one descendant branch (With "remove" change only) could affect computation on another descendant branches. This was not caugh by the test because the test graph are "too simple". I started writing more test in that regards, but I a submitting this changes earlier because I want to get more code landed to allow other optimisation work to happens. Differential Revision: https://phab.mercurial-scm.org/D9416

rhg: use `format_bytes!` for error messages This change also includes a formatting changing with the new `rustfmt` version, but I'm expecting it to have already been applied in another patch by the time this lands. Differential Revision: https://phab.mercurial-scm.org/D9407

packaging: don't use plain 'python' if another python has been specified Before this change, packaging on CentOS 8 failed because 'python' is used instead of 'python3'. Change was tested with: - make docker-centos7 - make docker-centos8 - make docker-ubuntu-bionic Differential Revision: https://phab.mercurial-scm.org/D9464