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share: show warning if share is outdated while source supports share-safe Previous patches in the series and some which are already committed implements share safe functionality where config and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