| author | Arseniy Alekseyev <aalekseyev@janestreet.com> |
| Thu, 18 May 2023 19:23:59 +0100 | |
| changeset 50673 | 5d84b1385f7f |
| parent 47014 | 32b527417ba3 |
| permissions | -rw-r--r-- |
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== New Features == |
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* `hg purge` is now a core command using `--confirm` by default. |
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* The `rev-branch-cache` is now updated incrementally whenever changesets |
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are added. |
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* The new options `experimental.bundlecompthreads` and |
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`experimental.bundlecompthreads.<engine>` can be used to instruct |
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the compression engines for bundle operations to use multiple threads |
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for compression. The default is single threaded operation. Currently |
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only supported for zstd. |
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== Default Format Change == |
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These changes affects newly created repositories (or new clone) done with |
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Mercurial 5.8. |
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* The `ZSTD` compression will now be used by default for new repositories |
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when available. This compression format was introduced in Mercurial 5.0, |
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released in May 2019. See `hg help config.format.revlog-compression` for |
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details. |
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* Mercurial installation built with the Rust parts will now use the |
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"persistent nodemap" feature by default. This feature was introduced in |
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Mercurial 5.4 (May 2020). However Mercurial instalation built without the |
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fast Rust implementation will refuse to interract with them by default. |
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This restriction can be lifted through configuration. |
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See `hg help config.format.use-persistent-nodemap` for details |
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== New Experimental Features == |
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* There's a new `diff.merge` config option to show the changes |
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relative to an automerge for merge changesets. This makes it |
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easier to detect and review manual changes performed in merge |
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changesets. It is supported by `hg diff --change`, `hg log -p` |
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`hg incoming -p`, and `hg outgoing -p` so far. |
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== Bug Fixes == |
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* gracefully recover from inconsistent persistent-nodemap data from disk. |
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== Backwards Compatibility Changes == |
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* In normal repositories, the first parent of a changeset is not null, |
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unless both parents are null (like the first changeset). Some legacy |
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repositories violate this condition. The revlog code will now |
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silentely swap the parents if this condition is tested. This can |
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change the output of `hg log` when explicitly asking for first or |
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second parent. The changesets "nodeid" are not affected. |
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== Internal API Changes == |
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* `changelog.branchinfo` is deprecated and will be removed after 5.8. |
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It is superseded by `changelogrevision.branchinfo`. |
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* Callbacks for revlog.addgroup and the changelog._nodeduplicatecallback hook |
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now get a revision number as argument instead of a node. |
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* revlog.addrevision returns the revision number instead of the node. |
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* `nodes.nullid` and related constants are being phased out as part of |
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the deprecation of SHA1. Repository instances and related classes |
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provide access via `nodeconstants` and in some cases `nullid` attributes. |