Re: When exactly should REBASE_HEAD exist?

From
Phillip Wood <hidden>
Date
2023-03-05 14:33:42
Reply to
Stefan Haller, 2023-03-03
Hi Stefan

On 03/03/2023 10:57, Stefan Haller wrote:
On 02.03.23 21:27, Stefan Haller wrote:
quoted
On 02.03.23 11:19, Phillip Wood wrote:
quoted
On 28/02/2023 12:55, Stefan Haller wrote:
quoted
The reason why I am asking this is: I'm using lazygit, which, during
interactive rebases, shows a combined view of the real commits that were
already applied, and the remaining commits that are yet to be applied
(it gets these by parsing rebase-merge/git-rebase-todo); something like
this, when I set the 2nd commit to "edit":

    pick   4th commit
    pick   3rd commit
           2nd commit  <-- YOU ARE HERE
           1st commit

This is great, but assuming that the 2nd commit conflicted, currently
the display looks like this:

    pick   4th commit
    pick   3rd commit
           1st commit  <-- YOU ARE HERE

I would like to extend this to also show a "fake entry" for the commit
that conflicted, if there is one. REBASE_HEAD is perfect for this,
except that I need a way to distinguish whether it was applied already
or not.
Can you check the index for conflicts when the rebase stops?
I could do that, but then the fake entry would go away as soon as I have
staged all conflict resolutions. I would find it useful for it to stay
visible in that case, until I continue the rebase.
It seems that I can get close by checking whether the file
.git/rebase-merge/amend exists. If it does, the current patch was
applied already, and I don't show the fake entry. If it doesn't, we
still need to commit the changes from REBASE-HEAD, so it makes sense to
show it in the list.

Does this sound like a reasonable approach? I must admit that the code
in sequencer.c is too complex for me to tell at a glance whether there
are situations where this heuristic would do the wrong thing.
When a fixup or squash stops for a confict resolution that file also exists as the result needs to be squashed into HEAD.

Best Wishes

Phillip
Thread (21 messages) 21 messages, 3 authors, last reply 2023-03-20
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