For non-merge commits we change "pick" to "drop" when we delete them. We do this
so that we can use the same code for dropping a commit no matter whether we are
in an interactive rebase or not. (If we aren't, we could just as well delete the
pick line from the todo list instead of setting it to "drop", but if we are, it
is better to keep the line around so that the user can change it back to "pick"
if they change their mind.)
However, merge commits can't be changed to "drop", so we have to delete them
from the todo file. We add a new daemon instruction that does this.
We still don't allow deleting a merge commit from within an interactive rebase.
The reason is that we don't show the "label" and "reset" todos in lazygit, so
deleting a merge commit would leave the commits from the branch that is being
merged in the list as "pick" commits, with no indication that they are going to
be dropped because they are on a different branch, and the merge commit that
would have brought them in is gone. This could be very confusing.
One of the comments we are deleting here said:
// Comparing just the hash is not enough; we need to compare both the
// action and the hash, as the hash could appear multiple times (e.g. in a
// pick and later in a merge).
I don't remember what I was thinking when I wrote this code, but it's nonsense
of course. Maybe I was thinking that the hash that appears in a "merge" todo
would be the hash of the commit that is being merged in (which would then
actually appear in an earlier pick), but it isn't, it's the hash of the merge
commit itself (so that the rebase can reuse its commit message). Which means
that hashes are unique, no need to compare the action.
When enabled, it adds "+n -m" after each file in the Files panel to show how
many lines were added and deleted, as with `git diff --numstat` on the command
line.
It is needed by both call sites of this function. This has the added benefit
that the argument doesn't unnecessarily show up in the status view when diffing
mode is on.
We will need this because under some conditions we are going to use this
function to edit a range of commits, and we can't set merge commits to "edit".
This corresponds to the code in startInteractiveRebaseWithEdit which has similar
logic.
It is a bit unfortunate that we will have these two different ways of setting
todos to edit: startInteractiveRebaseWithEdit does it after stopping in the
rebase, in the Then function of its refresh, but InteractiveRebase does it in
the daemon with a ChangeTodoActionsInstruction. It still makes sense though,
given how InteractiveRebase works.
This not only affects "edit", but also "drop", "fixup", and "squash".
Previously, when trying to use these for a range selection that includes a merge
commit, they would fail with the cryptic error message "Some todos not found in
git-rebase-todo"; now they simply exclude the merge commit. I'm not sure if one
is better or worse than the other, and we should probably simply disable the
commands when a merge commit is selected, but that's out of scope in this PR.
We allow deleting remote branches (or local and remote branches) only if *all*
selected branches have one.
We show the a warning about force-deleting as soon as at least one of the
selected branches is not fully merged.
The added test only tests a few of the most interesting cases; I didn't try to
cover the whole space of possible combinations, that would have been too much.
Currently we try to delete a branch normally, and if git returns an error and
its output contains the text "branch -D", then we prompt the user to force
delete, and try again using -D. Besides just being ugly, this has the
disadvantage that git's logic to decide whether a branch is merged is not very
good; it only considers a branch merged if it is either reachable from the
current head, or from its own upstream. In many cases I want to delete a branch
that has been merged to master, but I don't have master checked out, so the
current branch is really irrelevant, and it should rather (or in addition) check
whether the branch is reachable from one of the main branches. The problem is
that git doesn't know what those are.
But lazygit does, so make the check on our side, prompt the user if necessary,
and always use -D. This is both cleaner, and works better.
See this mailing list discussion for more:
https://lore.kernel.org/git/bf6308ce-3914-4b85-a04b-4a9716bac538@haller-berlin.de/
In practice, using path seems to work too, since Windows seems to be capable of
dealing with a path like C:/x/y instead of C:\x\y; but it's cleaner to do this
properly.
This change reduces the number of calls during application startup to
one, calling GetRepoPaths() earlier than previously and plumbing the
repoPaths struct around to achieve this end.
- Introduced a new optional user config command, allBranchesLogCmds
- When pressing 'a' in the Status view, cycle between non-empty, non-identical log commands
- There will always be at least one command to run, since allBranhesLogCmd has a default
- Update documentation & write an integration test
- Update translation string
The current behaviour when creating a new branch off of a remote branch
is to always track the branch it was created from.
For example, if a branch 'my_branch' is created off of the remote branch
'fix_crash_13', then 'my_branch' will be tracking the remote
'fix_crash_13' branch.
It is common practice to have both the local and remote branches named
the same when the local is tracking the remote one. Therefore, it is
reasonable to expect that 'my_branch' should not track the remote
'fix_crash_13' branch.
The new behaviour when creating a new branch off of a remote branch is
to track the branch it was created from only if the branch names match.
If the branch names DO NOT match then the newly created branch will not
track the remote branch it was created from.
For example, if a user creates a new branch 'fix_crash_13' off of the
remote branch 'fix_crash_13', then the local 'fix_crash_13' branch will
track the remote 'fix_crash_13' branch.
However, if the user creates a new branch called 'other_branch_name' off
of the remote branch 'fix_crash_13', then the local 'other_branch_name'
branch will NOT track the remote 'fix_crash_13' branch.
Several custom patch commands on parts of an added file would fail with the
confusing error message "error: new file XXX depends on old contents". These
were dropping the custom patch from the original commit, moving the patch to a
new commit, moving it to a later commit, or moving it to the index.
We fix this by converting the patch header from an added file to a diff against
an empty file. We do this not just for the purpose of applying the patch, but
also for rendering it and copying it to the clip board. I'm not sure it matters
much in these cases, but it does feel more correct for a filtered patch to be
presented this way.
Unfortunately it isn't possible to delete them. This would often be useful, but
our todo rewriting mechanisms rely on being able to find todos by some
identifier (hash for pick, ref for update-ref), and exec todos don't have a
unique identifier.
It is a valid case for a branch to share no history with any of the main
branches, in which case git merge-base returns an error (and an empty string).
Since we can't distinguish this from one of the main branches having been
deleted, we shouldn't invalidate the cache in that case.
In a triangular workflow the branch that you're pulling from is not the same as
the one that you are pushing to. For example, some people find it useful to set
the upstream branch to origin/master so that pulling effectively rebases onto
master, and set the push.default git config to "current" so that "feature"
pushes to origin/feature.
Another example is a fork-based workflow where "feature" has upstream set to
upstream/main, and the repo has remote.pushDefault set to "origin", so pushing
on "feature" pushes to origin/feature.
This commit adds new fields to models.Branch that store the ahead/behind
information against the push branch; for the "normal" workflow where you pull
and push from/to the upstream branch, AheadForPush/BehindForPush will be the
same as AheadForPull/BehindForPull.
In go 1.22, loop variables are redeclared with each iteration of the
loop, rather than simple updated on each iteration. This means that we
no longer need to manually redeclare variables when they're closed over
by a function.
We are going to truncate overly long lines returned from git log, and the most
likely field that is going to make the line too long is the subject; so we must
put it last, otherwise we'd end up with not enough fields to split when it's too
long.
It might not be obvious from the diff what's happening to the mock command
output in the test: it didn't have the divergence field (">") at all, which was
kind of a bug. It didn't matter for these tests though, because we are not
testing the divergence here, and our production code happens to be resilient
against it missing. But now we must add the ">" field before the subject.
The rebase.updateRefs feature of git is very useful to rebase a stack of
branches and keep everything nicely stacked; however, it is usually in the way
when you make a copy of a branch and want to rebase it "away" from the original
branch in some way or other. For example, the original branch might sit on main,
and you want to rebase the copy onto devel to see if things still compile there.
Or you want to do some heavy history rewriting experiments on the copy, but keep
the original branch in case the experiments fail. Or you want to split a branch
in two because it contains two unrelated sets of changes; so you make a copy,
and drop half of the commits from the copy, then check out the original branch
and drop the other half of the commits from it.
In all these cases, git's updateRefs feature insists on moving the original
branch along with the copy in the first rebase that you make on the copy. I
think this is a bug in git, it should create update-ref todos only for branches
that point into the middle of your branch (because only then do they form a
stack), not when they point at the head (because then it's a copy). I had a long
discussion about this on the git mailing list [1], but people either don't agree
or don't care enough.
So we fix this on our side: whenever we start a rebase for whatever reason, be
it interactive, non-interactive, or behind-the-scenes, we drop any update-ref
todos that are at the very top of the todo list, which fixes all the
above-mentioned scenarios nicely.
I will admit that there's one scenario where git's behavior is the desired one,
and the fix in this PR makes it worse: when you create a new branch off of an
existing one, with the intention of creating a stack of branches, but before you
make the first commit on the new branch you realize some problem with the first
branch (e.g. a commit that needs to be reworded or dropped). It this case you do
want both branches to be affected by the change. In my experience this scenario
is much rarer than the other ones that I described above, and it's also much
easier to recover from: just check out the other branch again and hard-reset it
to the rebased one.
[1]
https://public-inbox.org/git/354f9fed-567f-42c8-9da9-148a5e223022@haller-berlin.de/
Sometimes it takes a while to get PRs accepted upstream, and this blocks our
progress. Since I'm pretty much the only one making changes there anyway, it
makes sense to point to my fork directly.
For people who have the log.showsignature git config set to true, trying to
reword a signed commit would put the signature verification into the subject
field and the commit subject into the description field of the commit message
panel. Amending commits, adding co-authors to a commit, and copying a commit
message to the clipboard would all be broken in a similar way.
It is a bad idea to read a git-rebase-todo file, remove some update-ref todos,
and write it back out behind git's back. This will cause git to actually remove
the branches referenced by those update-ref todos when the rebase is continued.
The reason is that git remembers the refs affected by update-ref todos at the
beginning of the rebase, and remembers information about them in the file
.git/rebase-merge/update-refs. Then, whenever the user performs a "git rebase
--edit-todo" command, it updates that file based on whether update-ref todos
were added or removed by that edit. If we rewrite the git-rebase-todo file
behind git's back, this updating doesn't happen.
Fix this by not updating the git-rebase-todo file directly in this case, but
performing a "git rebase --edit-todo" command where we set ourselves as the
editor and change the file in there. This makes git update the bookkeeping
information properly.
Ideally we would use this method for all cases where we change the
git-rebase-todo file (e.g. moving todos up/down, or changing the type of a
todo); this would be cleaner because we wouldn't mess with git's private
implementation details. I tried this, but unfortunately it isn't fast enough.
Right now, moving a todo up or down takes between 1 and 2ms on my machine;
changing it to do a "git rebase --edit-todo" slows it down to over 100ms, which
is unacceptable.
To support this, we turn the confirmation prompt of the "Create fixup commit"
command into a menu; creating a fixup commit is the first entry, so that
"shift-F, enter" behaves the same as before. But there are additional entries
for creating "amend!" commits, either with or without file changes. These make
it easy to reword commit messages of existing commits.
We pass all of them to a single editor command, hoping that the editor will be
able to handle multiple files (VS Code and vim do).
We ignore directories that happen to be in the selection range; this makes it
easier to edit multiple files in different folders in tree view. We show an
error if only directories are selected, though.
I have seen some commit messages that contain CRLF instead of just LF; I'm not
sure if these were created by a broken git client, but they exist, so we need to
deal with them. Editing them when rewording a commit sort of works, but is a
little strange; the \r characters are invisble, so you need an extra arrow key
press to skip over them.
In the next commit we are going to add more logic related to line breaks, and it
is getting confused by the \r, so it is becoming more important to fix this. The
easiest fix is to normalize the line endings right after loading.
When doing a non-interactive rebase using a version of git earlier than 2.26, or
by explicitly calling `git -c rebase.backend=apply rebase`, lazygit can display
the pending todos by parsing the numbered patch files in `.git/rebase-apply/`.
Unfortunately, support for this has been broken for more than three years
because of the change in 682db77401 (the string literal "normal" should have
been changed to REBASE_MODE_NORMAL instead of REBASE_MODE_MERGING).
It's not an important bug since you can only get into this situation by doing a
rebase outside of lazygit, and then only with a pretty old git version or by
using very uncommon git options. So instead of fixing the bug, just remove the
code.
This makes it possible again to pass multiple arguments, for example
"--ff-only --autostash". This won't work correctly if you want to use
an argument that contains a space, but it's very unlikely that people
will want to do that, so I think this is good enough.
This commit introduces a new feature to the commit view, allowing users
to filter commits based on the author's name or email address. Similar
to the existing path filtering functionality, accessible through <c-s>,
this feature allows users to filter the commit history by the currently
selected commit's author if the commit view is focused, or by typing in
the author's name or email address.
This feature adds an entry to the filtering menu, to provide users with
a familiar and intuitive experience
As part of this, you must now press enter on a merge conflict file
to focus the merge view; you can no longer press space and if you do
it will raise an error.
This changes GetRepoPaths() to pull information from `git rev-parse`
instead of effectively reimplementing git's logic for pathfinding. This
change fixes issues with bare repos, esp. versioned homedir use cases,
by aligning lazygit's path handling to what git itself does.
This change also enables lazygit to run from arbitrary subdirectories of
a repository, including correct handling of symlinks, including "deep"
symlinks into a repo, worktree, a repo's submodules, etc.
Integration tests are now resilient against unintended side effects from
the host's environment variables. Of necessity, $PATH and $TERM are the
only env vars allowed through now.
Git has a bug [1] whereby running multiple fetch commands at the same time
causes all of them to append their information to the .git/FETCH_HEAD file,
causing the next git pull that wants to use the information to become confused,
and show an error like "Cannot rebase onto multiple branches". This error would
occur when pressing "f" and "p" in quick succession in the files panel, but also
when pressing "p" while a background fetch happens to be running. One likely
situation for this is pressing "p" right after startup.
Since lazygit never uses the information written to .git/FETCH_HEAD, it's best
to avoid writing to it, which fixes the scenarios described above.
However, it doesn't fix the problem of repeatedly pressing "f" quickly on the
checked-out branch; since we call "git pull" in that case, the above fix doesn't
help there. We'll address this separately in another PR.
[1] See https://public-inbox.org/git/xmqqy1daffk8.fsf@gitster.g/ for more
information.
Use git log instead of git rev-list, this way we don't get a line "commit <sha>"
at the beginning that we then have to discard again.
The test TestGetCommitMsg is becoming a bit pointless now, since it just
compares that input and output are identical.
This can be useful when you know that a cherry-picked commit would conflict at
the tip of your branch, but doesn't at the beginning of the branch (or
somewhere in the middle). In that case you want to be able to edit the commit
before where you want to insert the cherry-picked commits, and then paste to
insert them into the todo list at that point.
Add co-author to commits
Add addCoAuthor command for commits
- Implement the `addCoAuthor` command to add co-authors to commits.
- Utilize suggestions helpers to populate author names from the suggestions list.
- Added command to gui at `LocalCommitsController`.
This commit introduces the `addCoAuthor` command, which allows users to easily add co-authors to their commits. The co-author names are populated from the suggestions list, minimizing the chances of user input errors. The co-authors are added using the Co-authored-by metadata format recognized by GitHub and GitLab.
Since the slice stores pointers to objects, and we're only modifying the objects
but not the slice itself, there's no need to return it and assign it back. This
will allow us to call the function for subslices of commits.
Also, move the condition that checks for an empty string inside the function;
we're going to call it from more than one place, so this makes it easier.
This is useful for when you begin to type the message in lazygit's commit panel,
and then realize that you'd rather use your editor's more powerful editing
capabilities. Pressing <c-o> will take you right there.
It determines the yellow/red status by getting the merge-base between the
current branch and its upstream; while we're rebasing, the current branch is
HEAD, so it tried to get the merge-base between HEAD and HEAD{u}, which doesn't
work. Fix this by passing the name of the checked-out branch separately.
This was on oversight on my part: I assumed that the --work-tree arg was
always intended for use with linked worktrees which have a .git file
pointing back to the repo.
I'm honestly confused now: seems like there are three kinds of worktrees:
* the main worktree of a non-bare repo
* a linked worktree (with its own gitdir in the repo's worktrees/ dir)
* a random folder which you specify as a worktree with the --work-tree arg
I'm pretty sure the --work-tree arg is only intended to be used with this
third kind or workree
This allows to do the equivalent of "git rebase --onto <target> <base>", by
first marking the <base> commit with the new command, and then selecting the
target branch and invoking the usual rebase command there.
The model will be used for logic, so the full hash is needed there; a shortened
hash of 8 characters might be too short to be unique in very large repos. If
some view wants to display a shortened hash, it should truncate it at
presentation time.
Update-ref commands have an empty sha, and strings.HasPrefix returns true when
called with an empty second argument, so whenever an update-ref command is
present in a rebase, all commits from there on down were drawn with a green sha.
We've been sometimes using lo and sometimes using my slices package, and we need to pick one
for consistency. Lo is more extensive and better maintained so we're going with that.
My slices package was a superset of go's own slices package so in some places I've just used
the official one (the methods were just wrappers anyway).
I've also moved the remaining methods into the utils package.
Afero is a package that lets you mock out a filesystem with an in-memory filesystem.
It allows us to easily create the files required for a given test without worrying about
a cleanup step or different tests tripping on eachother when run in parallel.
Later on I'll standardise on using afero over the vanilla os package
We want to be using forward slashes everywhere internally, so if we get a path from windows
we should immediately convert it to use forward slashes.
I'm leaving out the recent repos list because that would require a migration
There are quite a few paths you might want to get e.g. the repo's path, the worktree's path,
the repo's git dir path, the worktree's git dir path. I want these all obtained once and
then used when needed rather than having to have IO whenever we need them. This is not so
much about reducing time spent on IO as it is about not having to care about errors every time
we want a path.
This fixes pkg/integration/tests/worktree/rebase.go which was failing on old git versions due to a difference in
order of branches that don't have recency values
Older versions of git don't support the -z flag in `git worktree list`.
So we're using newlines.
Also, we're not raising an error upon error because that triggers another refresh,
which gets us into an infinite loop
This can be useful if you want to find the commit that fixed a bug (you'd use
"broken/fixed" instead of "good/bad" in this case), or if you want to find the
commit that brought a big performance improvement (use "slow/fast"). It's pretty
mind-bending to have to use "good/bad" in these cases, and swap their meanings
in your head.
Thankfully, lazygit already had support for using custom terms during the bisect
(for the case that a bisect was started on the command-line, I suppose), so all
that's needed is adding a way to specify them in lazygit.
Now that we run code concurrently in our loaders, we need to handle that in our tests.
We could enforce a deterministic ordering by mocking waitgroup or something like that,
but I think it's fine to let our tests handle some randomness given that prod itself
will have that randomness.
I've removed the patch test file because it was clunky, not providing much value, and
it would have been hard to refactor to the new pattern
We're:
* using concurrency with wait groups
* avoiding regex
* processing lines of input as they come rather than storing everything in one string
* avoiding an inner loop by creating a mapping of remote names to branches
The speedup is most noticeable on first load, when we haven't yet fetched out main branches.
I saw a speedup from 105ms to 60ms. On subsequent loads the gain is more modest;
54ms to 40ms
Previously we used a single-line prompt for a tag annotation. Now we're using the commit message
prompt.
I've had to update other uses of that prompt to allow the summary and description labels to
be passed in
As discussed in https://github.com/jesseduffield/lazygit/pull/2599, it
makes more sense to have the user specify whether they want verbose
commits from their own git config, rather than lazygit config.
This means that we can remove all the code (including test coverage)
associated with the custom verbose flag, and lazygit will just inherit
the .gitconfig settings automatically.
Save has been deprecated for a while, push is the recommended way to save a
stash. Push has been available since 2.13, so we can use it without problems.
The code in getHydratedRebasingCommits relied on the assumption that the
git-rebase-todo file contains full SHAs. This has only been true from 2.25.2 on,
before that it would contain abbreviated SHAs. Fix this by storing fullCommits
in a slice instead of a map, and using a linear search.
The global counter approach is easy to understand but it's brittle and depends on implicit behaviour that is not very discoverable.
With a global counter, if any goroutine accidentally decrements the counter twice, we'll think lazygit is idle when it's actually busy.
Likewise if a goroutine accidentally increments the counter twice we'll think lazygit is busy when it's actually idle.
With the new approach we have a map of tasks where each task can either be busy or not. We create a new task and add it to the map
when we spawn a worker goroutine (among other things) and we remove it once the task is done.
The task can also be paused and continued for situations where we switch back and forth between running a program and asking for user
input.
In order for this to work with `git push` (and other commands that require credentials) we need to obtain the task from gocui when
we create the worker goroutine, and then pass it along to the commands package to pause/continue the task as required. This is
MUCH more discoverable than the old approach which just decremented and incremented the global counter from within the commands package,
but it's at the cost of expanding some function signatures (arguably a good thing).
Likewise, whenever you want to call WithWaitingStatus or WithLoaderPanel the callback will now have access to the task for pausing/
continuing. We only need to actually make use of this functionality in a couple of places so it's a high price to pay, but I don't
know if I want to introduce a WithWaitingStatusTask and WithLoaderPanelTask function (open to suggestions).
The first line of the diff pane would show branch heads (e.g.
commit dd9100ccc8b69a8b14b21a84e34854b5acfb871a (mybranch, origin/mybranch)
only when a pager is used. The reason is that the default of the --decorate
option to git show is "auto", which means to show the decoration only when
output goes to a tty. Lazygit uses a pty only when a pager is used, so the
decoration wouldn't show when no pager is used.
Since the branch head annotation is useful and we always want to see it, force
it by explicitly passing --decorate.
This solves three problems:
1. When the local main branch is behind its upstream, the merged status of
commits of a feature branch sitting on origin/main was not correct. This can
easily happen when you rebase a branch onto origin/main instead of main, and
don't bother keeping local main up to date.
2. It works when you don't have the main branch locally at all. This could
happen when you check out a colleague's feature branch that goes off of
"develop", but you don't have "develop" locally yourself because you normally
only work on "main".
3. It also works when you work on a main branch itself, e.g. by committing to it
directly, or by merging a branch locally. These local commits on a main
branch would previously be shown in green instead of red; this broke with
910a61dc46.
When stopping in a rebase because of a conflict, it is nice to see the commit
that git is trying to apply. Create a fake todo entry labelled "conflict" for
this, and show the "<-- YOU ARE HERE ---" string for that one (in red) instead
of for the real current head.
Missed a spot a couple PR's ago. We had an integration test which caught this but which was skipped due
to index.lock file issues. The test was also broken for other reasons due to it not having been running
for a while, so I've fixed that up too.
By constructing an arg vector manually, we no longer need to quote arguments
Mandate that args must be passed when building a command
Now you need to provide an args array when building a command.
There are a handful of places where we need to deal with a string,
such as with user-defined custom commands, and for those we now require
that at the callsite they use str.ToArgv to do that. I don't want
to provide a method out of the box for it because I want to discourage its
use.
For some reason we were invoking a command through a shell when amending a
commit, and I don't believe we needed to do that as there was nothing user-
supplied about the command. So I've switched to using a regular command out-
side the shell there
The only exception is when moving a custom patch for an entire commit to an
earlier commit; in this case the source commit becomes empty, but we want to
keep it, mainly for consistency with moving the patch to a later commit, which
behaves the same.
In all other cases where we rebase, it's confusing when empty commits are kept;
the most common example is rebasing a branch onto master, where master already
contains some of the commits of our branch. In this case we simply want to drop
these.
It defaults to {"master", "main"}, but can be set to whatever branch names
are used as base branches, e.g. {"master", "devel", "v1.0-hotfixes"}. It is
used for color-coding the shas in the commit list, i.e. to decide whether
commits are green or yellow.
Previously, when rebasing a branch onto a newer master, all commits from the
previous fork point up to its head were marked red (unpushed), including the
commits that are on master already. While this is technically correct from the
perspective of the current branch's upstream, it's not what most people expect,
intuitively; they want to see where the current branch starts, relative to
master. So all commits of master should be green, and then the commits of the
current branch in red.
When we use the one panel for the entire commit message, its tricky to have a keybinding both for adding a newline and submitting.
By having two panels: one for the summary line and one for the description, we allow for 'enter' to submit the message when done from the summary panel,
and 'enter' to add a newline when done from the description panel. Alt-enter, for those who can use that key combo, also works for submitting the message
from the description panel. For those who can't use that key combo, and don't want to remap the keybinding, they can hit tab to go back to the summary panel
and then 'enter' to submit the message.
We have some awkwardness in that both contexts (i.e. panels) need to appear and disappear in tandem and we don't have a great way of handling that concept,
so we just push both contexts one after the other, and likewise remove both contexts when we escape.
This fixes two problems with the "amend commit with staged changes" command:
1. Amending to a fixup commit didn't work (this would create a commmit with the
title "fixup! fixup! original title" and keep that at the top of the branch)
2. Unrelated fixup commits would be squashed too.
The added integration test verifies that both of these problems are fixed.
Instead of passing a bunch of different options in
PrepareInteractiveRebaseCommandOpts, where it was unclear how they interact if
several are set, have only a single field "instruction" which can be set to one
of various different instructions.
The functionality of replacing the entire todo file with our own is no longer
available; it is only possible to prepend todos to the existing file.
Also, instead of using different env vars for the various rebase operations that
we want to tell the daemon to do, use a single one that contains a json-encoded
struct with all available instructions. This makes the protocol much clearer,
and makes it easier to extend in the future.
At the moment it doesn't make a big difference, because the vast majority of
callers create a list of todos themselves to completely replace what git came up
with. We're changing this in the following commits though, and then it's helpful
to preserve merges.
It used to work on the assumption that rebasing commits in lazygit's model
correspond one-to-one to lines in the git-rebase-todo file, which isn't
necessarily true (e.g. when users use "git rebase --edit-todo" at the custom
command prompt and add a "break" between lines).
This is useful when working with stacked branches, because you can now move
"pick" entries across an update-ref command and you can tell exactly which
branch the commit will end up in.
It's also useful to spot situations where the --update-refs option didn't work
as desired. For example, if you duplicate a branch and want to rebase only one
of the branches but not the other (maybe for testing); if you have
rebase.updateRefs=true in your git config, then rebasing one branch will move
the other branch along. To solve this we'll have to introduce a way to delete
the update-ref entry (maybe by hitting backspace?); this is out of scope for
this PR, so for now users will have to type "git rebase --edit-todo" into the
custom command prompt to sort this out.
We will also have to prevent users from trying to turn update-ref commands into
other commands like "pick" or "drop"; we'll do this later in this branch.
So far the algorithm worked on the assumption that the output of the "git show"
command corresponds one-to-one to the lines of the rebase-todo file. This
assumption doesn't hold once we start to include todo lines that don't have a
sha (like update-ref), or when the todo file contains multiple entries for the
same sha. This should never happen normally, but it can if users manually edit
the todo file and duplicate a line.
The main reason for doing this (besides the reasons given for Status in the
previous commit) is that it allows us to easily convert from TodoCommand to
Action and back. This will be needed later in the branch. Fortunately,
TodoCommand is one-based, so this allows us to add an ActionNone constant with
the value 0.
This is unrelated to the changes in this PR, but since we are doing the same
thing for the commit.Action field in the next commit, it makes sense to do it
for Status too for consistency. Modelling this as an enum feels more natural
than modelling it as a string, since there's a finite set of possible values.
And it saves a little bit of memory (not very much, since none of the strings
were heap-allocated, but still).
Pulled this out into a separate commit since it was unrelated to the
feature coming behind it.
This just cleans up the `commit_test.go` file slightly (for the method
that I was working on) so that the tests are built in a way that is
slightly more readable - testing each configuration option individually
without combining any of them.
Instead, derive it from context at display time (if we're rebasing, it's the
first non-todo commit). This fixes the problem that unfolding the current
commit's files in the local commits panel would show junk in the frame's title.
Along the way we make sure to only display the "<--- YOU ARE HERE" string in the
local commits panel; previously it would show for the top commit of a branch or
tag if mid-rebase.
