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Re: Strange behavior of git rev-list

On Thu, Sep 07, 2017 at 11:50:25AM +0200, Paweł Marczewski wrote:

> Thanks. Any plans to fix that? Or is there a way to turn off this heuristic?

I don't think there's a way to turn it off for `rev-list`. Merge-base
computations are more careful, so you could determine the correct
endpoints that way. But when you fed them to `rev-list`, it would hit
the same run of skewed commits.

We've discussed storing true generation numbers in the past, which would
make this optimization more robust, as well as allow us to speed up many
other traversals (e.g., the "tag --contains"). It's something I'd like
to revisit, but it's not at the top of the pile.

In the meantime, it would probably be possible to write a patch that
conditionally disables the optimization. But it would mean all of your
rev-lists run a _lot_ slower.