On Tue, Oct 25, 2016 at 12:52 PM, Duy Nguyen [off-list ref] wrote:

On Sun, Oct 23, 2016 at 4:26 PM, Christian Couder
[off-list ref] wrote:

quoted

Goal
~~~~

We want to make it possible to use the split-index feature
automatically by just setting a new "core.splitIndex" configuration
variable to true.

Thanks. This definitely should help make split index a lot more
convenient for day-to-day use. The series looks ok (well, except the
pruning logic being discussed elsewhere in this thread, but I still
think it's a good strategy).

Thanks for your review.

quoted

This can be valuable as split-index can help significantly speed up
`git rebase` especially along with the work to libify `git apply`
that has been recently merged to master
(see https://github.com/git/git/commit/81358dc238372793b1590efa149cc1581d1fbd98).

I remember this. Since the apply libification work has landed, we can
now think about not writing index out after every apply step, which
gives the same (or more) speed up without the complication of
split-index. But if split-index is good enough for you, we can leave
it for another time.

Yeah, I think they are separate things that can be done.
When people do a lot of small rebases for example, then split-index
will speed up all the index writing, including the index writing at
the end of each rebase.