Change `func displayCommit()` so all the individual strings are built first,
then the whole thing `cols` is put together. Before, most strings were built
prior to constructing `cols`, but a few were built inside the `cols`
construction.
- **PR Description**
Support `git.paging.externalDiffCommand` config in diffing mode (i.e.
when showing the diff between two commits using `W`).
Fixes#3518.
- **PR Description**
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/
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.
It was added in 2018 (700f8c7e796), but I don't know for what purpose. It just
took me 15 minutes to figure out why my new file todo.go wasn't added, so I'm
removing this entry as I find it more harmful than helpful.
- **PR Description**
Simplify and canonicalize error handling across the code base.
Previously it was important to make sure that errors don't bubble up
into gocui, because it would panic there; so we had to show errors in
error panels in the right places (in controller code, usually). This is
error-prone because it's easy to forget (see #3490 for an example);
also, it's not always obvious where in the call chain the error panel
needs to be shown. Most of the time it's in controller code, but we had
plenty of calls to `Error()` in helpers, and I remember that I found
this very confusing when I was new to the code base.
Change this so that you can simply return errors everywhere. The
functions to show an error message manually have been removed for
clarity.
I tried to structure the commits so that you can review them one by one.
Closes#3491.
It is now only used as the error handler that is passed to gocui.Gui on
construction; it's not a client-facing API any more. Also, it doesn't have to
handle gocui.ErrQuit, as gocui takes care of that.
This lets us get rid of a few more calls to Error(), and it simplifies things
for clients of OnWorker: they can simply return an error from their callback
like we do everywhere else.
In Gui.onWorker we only make the minimum possible change to get things to
compile after the API-breaking change of the gocui update; we'll make this
cleaner later in this branch.
