Move this update under `Unreleased`. I started the change before the last
release and after rebasing, forgot to move it. Fixing it now thanks to @yuja
catching this on time.
Issue: #4122
See discussion thread in linked issue.
With this PR, all revset functions in [BUILTIN_FUNCTION_MAP](8d166c7642/lib/src/revset.rs (L570))
that return multiple values are either named in plural or the naming is hard to misunderstand (e.g. `reachable`)
Fixes: #4122
* See #4239 for details.
* For now, update working copy before reporting repo changes, so that
potential errors in reporting changes don't leave the repo in a stale
state.
Fixes: #4239
* First fetch from remote.
* Then check tx.{base_repo(),repo}.view().remote_bookmarks_matching(<branch>, <remote>).
This has to happen after the fetch has been done so the tx.repo() is updated.
* Warn if a branch is not found in any of the remotes used in the fetch. Note that the remotes
used in the fetch can be a subset of the remotes configured for the repo, so the language
of the warning tries to point that out.
Fixes: #4293
This makes it easier to work with multiple remotes at once while
tracking the default branch of the remote used to create the local
repository:
```shell
$ jj git clone --remote upstream https://github.com/upstream-org/repo
$ cd repo
$ jj git remote add origin git@github.com:your-org/repo
$ jj config set --repo git.fetch upstream
```
In the example above, `upstream` is the repository containing the
reference source code that you might want to patch, while `origin` is
your fork where pull-request will be pushed. The branch `main@upstream`
will be tracked.
This is basically "log -p" for "op log". The flag name has "op" because --diff
and --patch mean a similar thing in this context. Since -p implies --op-diff,
user can just do "op log -p" if he's okay with verbose op + content diffs.
Note that --no-graph affects both "op log" and "op diff" parts.
We might want to do some style changes later, such as inserting/deleting blank
lines, highlighting headers, etc.
Jujutsu's branches do not behave like Git branches, which is a major
hurdle for people adopting it from Git. They rather behave like
Mercurial's (hg) bookmarks.
We've had multiple discussions about it in the last ~1.5 years about this rename in the Discord,
where multiple people agreed that this _false_ familiarity does not help anyone. Initially we were
reluctant to do it but overtime, more and more users agreed that `bookmark` was a better for name
the current mechanism. This may be hard break for current `jj branch` users, but it will immensly
help Jujutsu's future, by defining it as our first own term. The `[experimental-moving-branches]`
config option is currently left alone, to force not another large config update for
users, since the last time this happened was when `jj log -T show` was removed, which immediately
resulted in breaking users and introduced soft deprecations.
This name change will also make it easier to introduce Topics (#3402) as _topological branches_
with a easier model.
This was mostly done via LSP, ripgrep and sed and a whole bunch of manual changes either from
me being lazy or thankfully pointed out by reviewers.
`jj new <commit>` automatically adds the checked out commits into the view head ids. However,
`jj edit` does not.
To reproduce:
```
jj git init test
cd test
jj commit -m "my commit"
jj log -r @- -T commit_id # Save the id
jj abandon -r @-
jj edit <saved_id>
jj log -r :: # Does not show the currently editing commit
```
It's a pretty frequent request to have support for turning off
auto-tracking of new files and to have a command to manually track
them instead. This patch adds a `snapshot.auto-track` config to decide
which paths to auto-track (defaults to `all()`). It also adds a `jj
track` command to manually track the untracked paths.
This patch does not include displaying the untracked paths in `jj
status`, so for now this is probably only useful in colocated repos
where you can run `git status` to find the untracked files.
#323
This flag implements three modes:
- `copy`: copy sparse patterns from parent
- `full`: do not copy sparse patterns from parent
- `empty`: clear all paths, equal to `set --clear`
This is useful for various tooling like tools that want to run a parallel
process that queries the build system (without running into locks/blocking.)
I think continuing to copy sparse patterns makes sense as the default behavior.
Signed-off-by: Austin Seipp <aseipp@pobox.com>
This enables workflows like "insert a commit that reformats the code in one of
my project directories".
`jj fix --include-unchanged-files` is an easy way to fix everything in the repo.
`jj fix --include-unchanged-files <file...>` fixes all of the `<files>` even if they are
unchanged.
This is mostly orthogonal to other features, so not many tests are added.
This is a significant and simple enough improvement that I think it's
appropriate to make it here instead of waiting for a `jj run`-based solution.
It seems everyone agrees that `obslog` is not an intuitive name. There
was some discussion about alternatives in #3592 and on #4146. The
alternatives included `evolution`, `evolutionlog`, `evolog`,
`rewritelog`, `revlog`, and `changelog`. It seemed like
`evolution-log`/`evolog` was the most popular option. That also
matches the command's current help text ("Show how a change has
evolved over time").
I played with max-inline-alternation = 3 for a couple of weeks, and it's pretty
good. I think somewhere between 2 and 4 is good default because one or two
remove + add sequences are easy to parse.
In this patch, I use the number of adds<->removes alternation as a threshold,
which approximates the visual complexity of diff hunks. I don't think user can
choose the threshold intuitively, but we need a config knob to try out some.
I set `max-inline-alternation = 3` locally. 0 and 1 mean "disable inlining"
and "inline adds-only/removes-only lines" respectively.
I've added "diff.<format>" config namespace assuming "ui.diff" will be
reorganized as "ui.diff-formatter" or something. #3327
Some other metrics I've tried:
```
// Per-line alternation. This also works well, but can't measure complexity of
// changes across lines.
fn count_max_diff_alternation_per_line(diff_lines: &[DiffLine]) -> usize {
diff_lines
.iter()
.map(|line| {
let sides = line.hunks.iter().map(|&(side, _)| side);
sides
.filter(|&side| side != DiffLineHunkSide::Both)
.dedup() // omit e.g. left->both->left
.count()
})
.max()
.unwrap_or(0)
}
// Per-line occupancy of changes. Large diffs don't always look complex.
fn max_diff_token_ratio_per_line(diff_lines: &[DiffLine]) -> f32 {
diff_lines
.iter()
.filter_map(|line| {
let [both_len, left_len, right_len] =
line.hunks.iter().fold([0, 0, 0], |mut acc, (side, data)| {
let index = match side {
DiffLineHunkSide::Both => 0,
DiffLineHunkSide::Left => 1,
DiffLineHunkSide::Right => 2,
};
acc[index] += data.len();
acc
});
// left/right-only change is readable
(left_len != 0 && right_len != 0).then(|| {
let diff_len = left_len + right_len;
let total_len = both_len + left_len + right_len;
(diff_len as f32) / (total_len as f32)
})
})
.reduce(f32::max)
.unwrap_or(0.0)
}
// Total occupancy of changes. Large diffs don't always look complex.
fn total_change_ratio(diff_lines: &[DiffLine]) -> f32 {
let (diff_len, total_len) = diff_lines
.iter()
.flat_map(|line| &line.hunks)
.fold((0, 0), |(diff_len, total_len), (side, data)| {
let l = data.len();
match side {
DiffLineHunkSide::Both => (diff_len, total_len + l),
DiffLineHunkSide::Left => (diff_len + l, total_len + l),
DiffLineHunkSide::Right => (diff_len + l, total_len + l),
}
});
(diff_len as f32) / (total_len as f32)
}
```
* We started with a tristate flag where:
- Auto - Maintain current behaviour. This edits if
the wc parent is not a head commit. Else, it will
create a new commit on the parent of the wc in
the direction of movement.
- Always - Always edit
- Never - Never edit, prefer the new+squash workflow.
However, consensus the review thread is that `auto` mode where we try to infer when to
switch to `edit mode`, should be removed. So `ui.movement.edit` is a boolean flag now.
- true: edit mode
- false: new+squash mode
* Also add a `--no-edit` flag as the explicit inverse of `--edit` and
ensure both flags take precedence over the config.
* Update tests that assumed edit mode inference, to specify `--edit` explicitly.
NOTE: #4302 was squashed into this commit, so see that closed PR for review history.
Part of #3947
We all noticed that x86 macOS binaries are no longer being provided on release,
due to `macos-11` runners going the way of the Dodo a while back. Nobody
alterted us to this, funny enough.
After some quick discussion, we concluded some things:
- x86 macOS runners are likely oversubscribed, and hurt CI latency badly
- `macos-12` is also deprecated; `macos-13` is the best x86 runner available
- GitHub probably isn't going to expand macOS runner capacity; `macos-13` will
one day go away
- Some people are still using `jj` on Intel Macs. We didn't get alerted because
they do their own builds for now, but may not always do that.
- We can just try to build on `macos-13` and make it optional for merges.
So that's what this does. It might be mergeable outright, but we can also use it
to measure build latency impacts.
Signed-off-by: Austin Seipp <aseipp@pobox.com>
* Add `builtin_immutable_heads()` in the `revsets.toml`.
* Redefine `immutable_heads()` in terms of `builtin_immutable_heads()`
* Warn if user redefines `builtin_immutable_heads()`, `mutable()` or
`immutable()`.
* Update module constant in revset_util.rs from BUILTIN_IMMUTABLE_HEADS
to USER_IMMUTABLE_HEADS to avoid confusion since it points at
`immutable_heads()` **and** we now have a revset-alias
literally named `builtin_immutable_heads()`.
* Add unittest
* Update CHANGELOG
* Update documentation.
Fixes: #4162
- add support for copy tracking to `diff --stat`
- switch `--summary` to match git's output more closely
- rework `show_diff_summary` signature to be more consistent
Add home directory expansion for SSH key filepaths. This allows the
`signing.key` configuration value to work more universally across both
Linux and macOS without requiring an absolute path.
This moved and renamed the previous `expand_git_path` function to a more
generic location, and the prior use was updated accordingly.
- force each diff command to explicitly enable copy tracking
- enable copy tracking in diff_summary
- post-process for diff iterator
- post-process for diff stream
- update changelog
Suppose a squash node in obslog is analogous to a merge in revisions log, it
makes sense to show diffs from auto-merge (or auto-squash) parents. This
basically means a non-partial squash node no longer shows diffs.
This also fixes missing diffs at the root predecessors if there were.
The idea is that --at-op specifies a certain operation, so --at-op=@ can be
interpreted as the option to select _the_ known head operation. This helps
eliminate special cases from "op log" which doesn't snapshot nor merge
concurrent ops.
Author dates and committer dates can be filtered like so:
committer_date(before:"1 hour ago") # more than 1 hour ago
committer_date(after:"1 hour ago") # 1 hour ago or less
A date range can be created by combining revsets. For example, to see any
revisions committed yesterday:
committer_date(after:"yesterday") & committer_date(before:"today")
To avoid always printing the rebase instructions to fix a conflict
even when a child commit to fix the conflict already exists, implement
the following:
* If working commit has conflicts:
* Continue printing the same message we print today.
* If working commit has no conflicts:
* If any parent has conflicts, we print: "Conflict in parent is resolved in working copy".
Also explicitly not printing the "conflicting parent" here, since a merge commit
could have conflict in multiple parents.
* If no parent has any conflicts: exit quietly.
* Update unittests for conflict hinting update.
* Update CHANGELOG
This changes less than it seems. Our CI builds already mostly linked a vendored
copy of libgit2. This is because before this commit, it turns out that `git2`
could link `libgit2` *either* statically or dynamically based on whether it could
find a version of libgit2 it liked to link dynamically. Our CI builds usually did
not provide such a version AFAIK.
This made the kind of binary `cargo install` would produce unpredictable and may
have contributed to #2896. I was once very surprised when I did `brew upgrade libgit2` and then
`cargo build --release` suddenly switched from building dynamically linked `jj` to the vendored version.
Instead, if a packager wants to link `libgit2` dynamically, they should set an
environment variable, as described inside the diff of this commit. I also think
we should recommend static linking as `git2` is quite picky about the versions of
`libgit2` it supports. See also https://github.com/rust-lang/git2-rs/pull/1073
This might be related to #4115.
The high level changes include:
- Reworking `fix_file_ids()` to loop over multiple candidate tools per file,
piping file content between them. Only the final file content is written to
the store, and content is no longer read for changed files that don't match
any of the configured patterns.
- New struct `ToolsConfig` to represent the parsed/validated configuration.
- New function `get_tools_config()` to create a `ToolsConfig` from a `Config`.
- New tests; the only old behavior that has changed is that we don't require
`fix.tool-command` if `fix.tools` defines one or more tools. The general
approach to validating the config is to fail early if anything is weird.
Co-Authored-By: Josh Steadmon <steadmon@google.com>
This implements a building block of "signed-off-by line" #1399 and "commit
--verbose" #1946. We'll probably need an easy way to customize the diff part,
but I'm not sure if it can be as simple as a template alias function. User
might want to embed diffs without "JJ: " prefixes?
Perhaps, we can deprecate "ui.default-description", but it's not addressed in
this patch. It could be replaced with "default_description" template alias,
but we might want to configure default per command. Suppose we add a default
"backout_description" template, it would have to be rendered against the
source commit, not the newly-created backout commit.
The template key is named as "draft_commit_description" because it is the
template to generate an editor template. "templates.commit_description_template"
sounds a bit odd.
There's one minor behavior change: the default description is now terminated
by "\n".
Closes#1354
This basically reverts 20eb9ecec1 "git: don't abandon HEAD commit when it
loses a branch." I think the new behavior is more consistent because the Git
HEAD is equivalent to @- in jj, so it shouldn't be considered a named ref.
Note that we've made old HEAD branch not considered at 92cfffd843 "git: on
external HEAD move, do not abandon old branch."
#4108
The user can define the setting `git.private-commits` as they desire. For
example:
git.private-commits = 'description(glob:"wip:*")'
If any commits are in this revset, then the push is aborted.
If a commit would be private but already exists on the remote, then it does
not block pushes, nor do its descendents block pushes unless they are also
contained in `git.private-commits`.
Closes#3376
Prevents a warning from being printed when renaming branches in a
colocated repo, since git tracking branches were being considered as
remote tracking branches.
The text pattern is applied prior to comparison as we do in Mercurial. This
might affect hunk selection, but is much faster than computing diff of full
file contents. For example, the following hunk wouldn't be caught by
diff_contains("a") because the line "b\n" is filtered out:
- a
b
+ a
Closes#2933
This patch adds TreeDiff template type to host formatting options. The main
reason of this API design is that diff formats have various incompatible
parameters, so a single .diff(files, format[, options..]) method would become
messy pretty quickly. Another reason is that we can probably add custom
summary templating support as diff.files().map(|file| file.path()..).
RepoPathUiConverter is passed to templater explicitly because the one stored
in RevsetParseContext is behind Option<_>.
Since fileset and revset languages are syntactically close, we can reparse
revset expression as a fileset. This might sound a bit scary, but helps
eliminate nested quoting like file("~glob:'*.rs'"). One oddity exists in alias
substitution, though. Another possible problem is that we'll need to add fake
operator parsing rules if we introduce incompatibility in fileset, or want to
embed revset expressions in a fileset.
Since "file(x, y)" is equivalent to "file(x|y)", the former will be deprecated.
I'll probably add a mechanism to collect warnings during parsing.
I used to use "remote_branches() & ~mine()" to exclude "their" branches from
the default log, and I don't think that's uncommon requirement. Suppose
untracked branches are usually read-only, it's probably okay to make them
immutable by default.
Adds support for revset functions `tracked_remote_branches()` and
`untracked_remote_branches()`. I think this would be especially useful
for configuring `immutable_heads()` because rewriting untracked remote
branches usually wouldn't be desirable (since it wouldn't update the
remote branch). It also makes it easy to hide branches that you don't
care about from the log, since you could hide untracked branches and
then only track branches that you care about.
Partially resolve a 1.5‐year‐old TODO comment.
Add opt‐in syntax for case‐insensitive matching, suffixing the
pattern kind with `-i`. Not every context supports case‐insensitive
patterns (e.g. Git branch fetch settings). It may make sense to make
this the default in at least some contexts (e.g. the commit signature
and description revsets), but it would require some thought to avoid
more confusing context‐sensitivity.
Make `mine()` match case‐insensitively unconditionally, since email
addresses are conventionally case‐insensitive and it doesn’t take
a pattern anyway.
This currently only handles ASCII case folding, due to the complexities
of case‐insensitive Unicode comparison and the `glob` crate’s lack
of support for it. This is unlikely to matter for email addresses,
which very rarely contain non‐ASCII characters, but is unfortunate
for names and descriptions. However, the current matching behaviour is
already seriously deficient for non‐ASCII text due to the lack of any
normalization, so this hopefully shouldn’t be a blocker to adding the
interface. An expository comment has been left in the code for anyone
who wants to try and address this (perhaps a future version of myself).
The output looks somewhat similar to color-words diffs. Unified diffs are
verbose, but are easier to follow if adjacent lines are added/removed + modified
for example.
Word-level diffing is forcibly enabled. We can also add a config knob (or
!color condition) to turn it off to save CPU time.
I originally considered disabling highlights in block insertion/deletion, but
that wasn't always great. This can be addressed separately as it also applies
to color-words diffs. #3958
Forgetting a workspace removes its working-copy commit, so it makes
sense for it to be abandoned if it is discardable just like editing a
new commit will cause the old commit to be abandoned if it is
discardable.
The default style is compatible with various terminal emulators, but I suspect
that many people wouldn't like underlines. Let's add an example to override it.
Fixes#2476.
Previously, if there was a change id match within the short prefix
lookup set, `jj` would not look for commits with that same change id
outside the short prefix set. So, it wouldn't find the conflicted
commits for a commit with a divergent (AKA conflicted) change id.
It's common to create empty working-copy commits while using jj, and
currently the author timestamp for a commit is only set when it is first
created. If you create an empty commit, then don't work on a repo for a
few days, and then start working on a new feature without abandoning the
working-copy commit, the author timestamp will remain as the time the
commit was created rather than being updated to the time that work began
or finished.
This commit changes the behavior so that discardable commits (empty
commits with no description) by the current user have their author
timestamps reset when they are rewritten, meaning that the author
timestamp will become finalized whenever a commit is given a description
or becomes non-empty.
We now have two `cmd_show` in the repo. I think this one should become
`cmd_file_show`, but this should be done uniformly over all the commands
for consistency.
I did *not* keep `print` as an alias (I couldn't find a compelling
reason to do it), but let me know if anyone feels like keeping it.
Since "set <thing>" often adds a <thing> if not exists, it make some sense
that "branch set" does upsert. The current "branch set" use case is now covered
by "branch move", so it's okay to change the "set" behavior.
If new branch is created by "branch set", status message and hint will be
printed to help migration. The user should be able to undo creation if it was
a mistake.
Closes#3584
This allows users to jump to the next conflict in the ancestors or children of
the start commit.
Continues work on #2126
Co-Authored-By: Noah Mayr <dev@noahmayr.com>
In a repo of mine I wanted to do something like the following to push all of my
leaves to the remote as backup:
jj git push -c 'all:heads(base::) & mine() ~ empty()'
But couldn't, because `jj git push` doesn't handle large revsets, even though
it does handle multiple `-c` arguments, so I had to work out some pipe-to-xargs
command instead.
Signed-off-by: Austin Seipp <aseipp@pobox.com>
This basically supersedes the current "branch set" command. The plan is to turn
"branch set" into an "upsert" command, and deprecate "branch create". (#3584)
Maybe we can also add "branch set --new" flag to only allow creation of new
branches. One reason behind this proposed change is that "set" usually allows
both "creation" and "update". However, we also need a typo-safe version of
"set" to not create new branches by accident.
"jj branch move" is useful when advancing ancestor branches. Let's say you've
added a couple of commits on top of an existing PR branch, you can advance the
branch by "jj branch move --from 'heads(::@- & branches())' --to @-". If this
pattern is super common, maybe we can add --advance flag for short.
One drawback of this change is that "git branch --move" is equivalent to
"jj branch rename". I personally don't find this is confusing, but it's true
that "move" sometimes means "rename".
- make an internal set of watchman extensions until the client api gets
updates with triggers
- add a config option to enable using triggers in watchman
Co-authored-by: Waleed Khan <me@waleedkhan.name>
Still alias function shadows builtin function (of any arity) by name. This
allows to detect argument error as such, but might be a bit inconvenient if
user wants to overload heads() for example. If needed, maybe we can add some
config/revset syntax to import builtin function to alias namespace.
The functions table is keyed by name, not by (name, arity) pair. That's mainly
because std collections require keys to be Borrow, and a pair of borrowed
values is incompatible with owned pair. Another reason is it makes easy to look
up overloads by name.
Alias overloading could also be achieved by adding default parameters, but that
will complicate the implementation a bit more, and can't prevent shadowing of
0-ary immutable_heads().
Closes#2966
Most of the value of `jj fix` over a shell script is in formatting commits
other than `@`. `@::` often doesn't contain those other commits, so `-s @` is a
bad default.
We could get the same effect from `-s 'mutable() & ::@'`, but `reachable()` is
a bit more explicit and simple to read.
We could also base this on excluding `trunk()`, but that just seems like an
indirection for `mutable()` that might ignore the user's intent if they have
configured part of trunk to be mutable.
It's been more than 6 months since we added support for dynamically
selecting the working copy implementation. This patch drops support
for selecting the default implementation of that and other stores.
This addresses issue #3317, where as discussed we want to show the paths to
configuration files if they contain errors, to make it easier for the user to
locate them.
The goal is to remove special case from parsing functions and provide slightly
better error message. I don't know if we'd want to use "all:" in aliases, but
there are no strong reasons to disable it.
This commit adds an optional flag to be able to push commits with an
empty description to a remote git repo. While the default behavior is
ideal we might need to interact with a repo that has an empty commit
description in it. I ran into this issue a few weeks ago pushing commits
from an open source repo to an empty repo and had to go back to using
git for that push as I would not want to rewrite the history which was
many many years long just for that.
This flag allows users an escape hatch for pushing empty descriptions
for commits and they're sure that they want that behavior.
This commit adds the flag to the `git push` command and updates the docs
for the command. It also updates the original test to make sure that the
flag works as intended to reject the commit when not set and to allow
the commit when the flag is set.
Closes#2633
Clear the rest of the cursor line (from the cursor to the end of the
row) after drawing the progress bar rather than clearing the entire line
before drawing. This reduces flickering on terminal emulators which are
able to redraw rapidly.
I recently needed to test something on top of a two branches at the
same time, so I created a new commit on top of both of them (i.e. a
merge commit). I then ran tests and made some adjustments to the
code. These adjustments belonged in one of the parent branches, so I
used `jj squash --into` to squash it in there. Unfortunately, that
meant that my working copy became a single-parent commit based on one
of the branches only. We already had #2859 for tracking this issue.
This patch changes the behavior so we create a new working-copy commit
with all of the previous parents.
As explained in the commit, our logic is a bit more complicated than
that of `git push --force-with-lease`. This is to match the behavior of
`jj git fetch` and branch conflict resolution rules.
I add them as aliases, since a user may instead choose to define `immutable_heads()`, for example, as `heads(immutable())`, and the define `immutable()` instead.
This revset correctly implements "reachability" from a set of source commits following both parent and child edges as far as they can go within a domain set. This type of 'bfs' query is currently impossible to express with existing revset functions.
previously, aliases to built-in commands were silently ignored. this matches git's behavior, but seems unhelpful, especially if the user doesn't know that a command with that name already exists.
give a warning rather than silently ignoring it.
When using `ui.color = "debug"`, changes in the output style
additionally include delimiters << and >>, as well as all active labels
at this point separated by ::. The output is otherwise unformatted and
the delimiters and labels inherit the style of the content they apply
to.
Perhaps, this can be used to generate parsable branches list.
The hint for deleted branches isn't migrated to the template. I'm thinking of
moving it out of the loop and printed once at the end. If we want to generate
a hint in template, we'll probably need local_ref.tracking_remote_refs(), etc.
that return a list of RefNames.
For example,
```
<<<<<<< Conflict 1 of 3
+++++++ Contents of side #1
left 3.1
left 3.2
left 3.3
%%%%%%% Changes from base to side #2
-line 3
+right 3.1
>>>>>>>
```
or
```
<<<<<<< Conflict 1 of 1
%%%%%%% Changes from base to side #1
-line 3
+right 3.1
+++++++ Contents of side #2
left 3.1
left 3.2
left 3.3
>>>>>>>
```
Currently, there is no way to disable these, this is TODO for a future
PR. Other TODOs for future PRs: make these labels configurable. After
that, we could support a `diff3/git`-like conflict format as well, in
principle.
Counting conflicts helps with knowing whether you fixed all the
conflicts while you are in the editor.
While labeling "side #1", etc, does not tell you the commit id or
description as requested in #1176, I still think it's an improvement.
Most importantly, I hope this will make `jj`'s conflict format less
scary-looking for new users.
I've used this for a bit, and I like it. Without the labels, I would see
that the two conflicts have a different order of conflict markers, but I
wouldn't be able to remember what that means. For longer diffs, it can
be tricky for me to quickly tell that it's a diff as opposed to one of
the sides. This also creates some hope of being able to navigate a
conflict with more than 2 sides.
Another not-so-secret goal for this is explained in
https://github.com/martinvonz/jj/pull/3109#issuecomment-2014140627. The
idea is a little weird, but I *think* it could be helpful, and I'd like
to experiment with it.
Thanks to everyone who's contributed!
Unlike previous releases, I went through the changelog entries and
reorganized them a bit.
We didn't have anything under "Deprecations" this time, but I moved
the heading after "Breaking changes" for next release. I think
breaking changes are more important because deprecations are just
about giving a heads up before it actually breaks.
