Re: Issues with using git debrebase for linux

[Ian Jackson <ijackson@chiark.greenend.org.uk>]

Ian Jackson writes ("Re: Issues with using git debrebase for linux"):
> I have a work-in-progress which has achieved this, and which cuts the
> tiem for `git-debrebase' on your use-dgit-test branch from 77s to
> 3.4s, on my laptop.
> 
> I need to do a bit more work to make this change properly testable and
> releaseable.  I think there's more to be done to make it faster still.

I think I can speed up "git-debrebase status" by a lot, too.

I discover that
    git diff-tree --name-only A B
is no faster than
    git diff-tree A B
and both are much much slower than
    git ls-tree A
    git ls-tree B
and some trivial subsequent computation.

Ian.

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