relnotes/5.8
author Pierre-Yves David <pierre-yves.david@octobus.net>
Fri, 28 Jan 2022 14:25:45 +0100
changeset 48706 00bfd920169d
parent 47014 32b527417ba3
permissions -rw-r--r--
merge: break up a not-so-one-liner for readability Differential Revision: https://phab.mercurial-scm.org/D12109
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
47014
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
     1
== New Features ==
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
     2
 
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
     3
 * `hg purge` is now a core command using `--confirm` by default.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
     4
 
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
     5
 * The `rev-branch-cache` is now updated incrementally whenever changesets
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
     6
   are added.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
     7
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
     8
 * The new options `experimental.bundlecompthreads` and
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
     9
   `experimental.bundlecompthreads.<engine>` can be used to instruct
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    10
   the compression engines for bundle operations to use multiple threads
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    11
   for compression. The default is single threaded operation. Currently
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    12
   only supported for zstd.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    13
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    14
== Default Format Change ==
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    15
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    16
These changes affects newly created repositories (or new clone) done with
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    17
Mercurial 5.8.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    18
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    19
  * The `ZSTD` compression will now be used by default for new repositories
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    20
    when available. This compression format was introduced in Mercurial 5.0,
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    21
    released in May 2019. See `hg help config.format.revlog-compression` for
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    22
    details.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    23
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    24
  * Mercurial installation built with the Rust parts will now use the
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    25
    "persistent nodemap" feature by default. This feature was introduced in
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    26
    Mercurial 5.4 (May 2020). However Mercurial instalation built without the
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    27
    fast Rust implementation will refuse to interract with them by default.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    28
    This restriction can be lifted through configuration.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    29
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    30
    See `hg help config.format.use-persistent-nodemap` for details
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    31
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    32
== New Experimental Features ==
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    33
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    34
 * There's a new `diff.merge` config option to show the changes
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    35
    relative to an automerge for merge changesets. This makes it
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    36
    easier to detect and review manual changes performed in merge
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    37
    changesets. It is supported by `hg diff --change`, `hg log -p`
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    38
    `hg incoming -p`, and `hg outgoing -p` so far.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    39
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    40
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    41
== Bug Fixes ==
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    42
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    43
 * gracefully recover from inconsistent persistent-nodemap data from disk.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    44
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    45
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    46
== Backwards Compatibility Changes ==
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    47
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    48
 * In normal repositories, the first parent of a changeset is not null,
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    49
   unless both parents are null (like the first changeset). Some legacy
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    50
   repositories violate this condition. The revlog code will now
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    51
   silentely swap the parents if this condition is tested. This can
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    52
   change the output of `hg log` when explicitly asking for first or
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    53
   second parent. The changesets "nodeid" are not affected.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    54
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    55
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    56
== Internal API Changes ==
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    57
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    58
 * `changelog.branchinfo` is deprecated and will be removed after 5.8.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    59
   It is superseded by `changelogrevision.branchinfo`.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    60
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    61
 * Callbacks for revlog.addgroup and the changelog._nodeduplicatecallback hook
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    62
   now get a revision number as argument instead of a node.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    63
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    64
 * revlog.addrevision returns the revision number instead of the node.
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    65
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    66
 * `nodes.nullid` and related constants are being phased out as part of
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    67
   the deprecation of SHA1. Repository instances and related classes
32b527417ba3 relnotes: copy contents of "next" to "5.8" and clear "next"
Martin von Zweigbergk <martinvonz@google.com>
parents:
diff changeset
    68
   provide access via `nodeconstants` and in some cases `nullid` attributes.