Mercurial > hg
view relnotes/5.7 @ 51181:dcaa2df1f688
changelog: never inline changelog
The test suite mostly use small repositories, that implies that most changelog in the
tests are inlined. As a result, non-inlined changelog are quite poorly tested.
Since non-inline changelog are most common case for serious repositories, this
lack of testing is a significant problem that results in high profile issue like
the one recently fixed by 66417f55ea33 and 849745d7da89.
Inlining the changelog does not bring much to the table, the number of total
file saved is negligible, and the changelog will be read by most operation
anyway.
So this changeset is make it so we never inline the changelog, and de-inline the
one that are still inlined whenever we touch them.
By doing that, we remove the "dual code path" situation for writing new entry to
the changelog and move to a "single code path" situation. Having a single
code path simplify the code and make sure it is covered by test (if test cover
that situation obviously)
This impact all tests that care about the number of file and the exchange size,
but there is nothing too complicated in them just a lot of churn.
The churn is made "worse" by the fact rust will use the persistent nodemap on
any changelog now. Which is overall a win as it means testing the persistent
nodemap more and having less special cases.
In short, having inline changelog is mostly useless and an endless source of
pain. We get rid of it.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Mon, 11 Dec 2023 22:27:59 +0100 |
parents | d67732a4b58a |
children |
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== New Features == * There is a new config section for templates used by hg commands. It is called `[command-templates]`. Some existing config options have been deprecated in favor of config options in the new section. These are: `ui.logtemplate` to `command-templates.log`, `ui.graphnodetemplate` to `command-templates.graphnode`, `ui.mergemarkertemplate` to `command-templates.mergemarker`, `ui.pre-merge-tool-output-template` to `command-templates.pre-merge-tool-output`. * There is a new set of config options for the template used for the one-line commit summary displayed by various commands, such as `hg rebase`. The main one is `command-templates.oneline-summary`. That can be overridden per command with `command-templates.oneline-summary.<command>`, where `<command>` can be e.g. `rebase`. As part of this effort, the default format from `hg rebase` was reorganized a bit. * `hg purge` is now a core command using `--confirm` by default. * `hg diff` and `hg extdiff` now support `--from <rev>` and `--to <rev>` arguments as clearer alternatives to `-r <revs>`. `-r <revs>` has been deprecated. * The memory footprint per changeset during pull/unbundle operations has been further reduced. * There is a new internal merge tool called `internal:mergediff` (can be set as the value for the `merge` config in the `[ui]` section). It resolves merges the same was as `internal:merge` and `internal:merge3`, but it shows conflicts differently. Instead of showing 2 or 3 snapshots of the conflicting pieces of code, it shows one snapshot and a diff. This may be useful when at least one side of the conflict is similar to the base. The new marker style is also supported by "premerge" as `merge-tools.<tool>.premerge=keep-mergediff`. * External hooks are now called with `HGPLAIN=1` preset. This has the side effect of ignoring aliases, templates, revsetaliases, and a few other config options in any `hg` command spawned by the hook. The previous behavior can be restored by setting HGPLAINEXCEPT appropriately in the parent process. See `hg help environment` for the list of items, and how to set it. * The `branchmap` cache is updated more intelligently and can be significantly faster for repositories with many branches and changesets. * The `rev-branch-cache` is now updated incrementally whenever changesets are added. == New Experimental Features == * `experimental.single-head-per-branch:public-changes-only` can be used restrict the single head check to public revision. This is useful for overlay repository that have both a publishing and non-publishing view of the same storage. == Bug Fixes == == Backwards Compatibility Changes == * `--force-lock` and `--force-wlock` options on `hg debuglock` command are renamed to `--force-free-lock` and `--force-free-wlock` respectively. == Internal API Changes == * `changelog.branchinfo` is deprecated and will be removed after 5.8. It is superseded by `changelogrevision.branchinfo`.