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Differential D10498

relnote: document the use of persistent-nodemap by default for Rust build
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Authored by marmoute on Apr 20 2021, 10:48 AM.

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pulkit
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hg-reviewers
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rHGc3eee5ad1de9: relnote: document the use of persistent-nodemap by default for Rust build

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rHG Mercurial
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Mrelnotes/next (8 lines)

Diff 27186

relnotes/next

These changes affects newly created repositories (or new clone) done with These changes affects newly created repositories (or new clone) done with
Mercurial 5.8. Mercurial 5.8.
* The `ZSTD` compression will now be used by default for new repositories * The `ZSTD` compression will now be used by default for new repositories
when available. This compression format was introduced in Mercurial 5.0, when available. This compression format was introduced in Mercurial 5.0,
released in May 2019. See `hg help config.format.revlog-compression` for released in May 2019. See `hg help config.format.revlog-compression` for
details. 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 == == New Experimental Features ==
* There's a new `diff.merge` config option to show the changes * There's a new `diff.merge` config option to show the changes
relative to an automerge for merge changesets. This makes it relative to an automerge for merge changesets. This makes it
easier to detect and review manual changes performed in merge easier to detect and review manual changes performed in merge
changesets. It is supported by `hg diff --change`, `hg log -p` changesets. It is supported by `hg diff --change`, `hg log -p`
`hg incoming -p`, and `hg outgoing -p` so far. `hg incoming -p`, and `hg outgoing -p` so far.