Re: Please pull ACPI updates

From: J. Bruce Fields
Date: Thu Jul 17 2008 - 17:16:51 EST

On Thu, Jul 17, 2008 at 02:49:04PM -0400, Len Brown wrote:
> One thing I wish I had in git is a way to make this sequence easier...

Linus's answer (with rebase -i) is probably better, but my habit is to
do what you describe, with some minor shortcuts:

> Say I have a big topic branch with 30 patches in it.
> The 3rd patch turns out to have a bug in it, but the
> rest of the series is okay. Today I invoke gitk on
> the branch and keep that open.
> Then I create a new topic branch at the broken patch.
> I always consult ~/src/git/Documentation/git-reset.txt
> so I can remember the following sequence...
> $ git reset --soft HEAD^
> $ edit
> $ git commit -a -c ORIG_HEAD

Instead of the above three steps, you can do just:

$ edit
$ git commit -a --amend

> Now I've got the fixed 3rd patch checked in,
> but 27 patches in the original branch are hanging
> off the original broken 3rd patch.
> So I git-cherry-pick 27 patches
> I hope I get them in the right order and don't miss any...
> It would be nice if we could somehow git rebase those
> 27 patches in a single command, but if we do,
> that pulls with it the broken 3rd patch.

At this point I do

git rebase --onto HEAD old-sha1 name-of-branch-to-rebase

(where old-sha1 is the name of the commit we just replaced, which I
usually cut-n-paste out of gitk). That rebases the commits in the range onto the new HEAD commit that you
just created, and replaces the named branch with the result.

> come to think of it, I can probably export 4..27 as
> an mbox and then import it on top of the new 3,
> maybe that is what others do.

That works too.

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