--- a/relnotes/next Tue Apr 20 13:01:47 2021 -0700
+++ b/relnotes/next Tue Apr 20 08:28:11 2021 -0700
@@ -1,68 +1,21 @@
== New Features ==
- * `hg purge` is now a core command using `--confirm` by default.
-
- * The `rev-branch-cache` is now updated incrementally whenever changesets
- are added.
-
- * The new options `experimental.bundlecompthreads` and
- `experimental.bundlecompthreads.<engine>` can be used to instruct
- the compression engines for bundle operations to use multiple threads
- for compression. The default is single threaded operation. Currently
- only supported for zstd.
== Default Format Change ==
These changes affects newly created repositories (or new clone) done with
Mercurial 5.8.
- * The `ZSTD` compression will now be used by default for new repositories
- when available. This compression format was introduced in Mercurial 5.0,
- released in May 2019. See `hg help config.format.revlog-compression` for
- details.
-
- * Mercurial installation built with the Rust parts will now use the
- "persistent nodemap" feature by default. This feature was introduced in
- Mercurial 5.4 (May 2020). However Mercurial instalation built without the
- fast Rust implementation will refuse to interract with them by default.
- This restriction can be lifted through configuration.
-
- See `hg help config.format.use-persistent-nodemap` for details
== New Experimental Features ==
- * There's a new `diff.merge` config option to show the changes
- relative to an automerge for merge changesets. This makes it
- easier to detect and review manual changes performed in merge
- changesets. It is supported by `hg diff --change`, `hg log -p`
- `hg incoming -p`, and `hg outgoing -p` so far.
-
== Bug Fixes ==
- * gracefully recover from inconsistent persistent-nodemap data from disk.
-
== Backwards Compatibility Changes ==
- * In normal repositories, the first parent of a changeset is not null,
- unless both parents are null (like the first changeset). Some legacy
- repositories violate this condition. The revlog code will now
- silentely swap the parents if this condition is tested. This can
- change the output of `hg log` when explicitly asking for first or
- second parent. The changesets "nodeid" are not affected.
-
== Internal API Changes ==
- * `changelog.branchinfo` is deprecated and will be removed after 5.8.
- It is superseded by `changelogrevision.branchinfo`.
- * Callbacks for revlog.addgroup and the changelog._nodeduplicatecallback hook
- now get a revision number as argument instead of a node.
-
- * revlog.addrevision returns the revision number instead of the node.
-
- * `nodes.nullid` and related constants are being phased out as part of
- the deprecation of SHA1. Repository instances and related classes
- provide access via `nodeconstants` and in some cases `nullid` attributes.