Comment by imiric

I gave it a try a few months ago, and wasn't impressed. About a quarter of the time it got confused about the commit it should squash into, and left the repo in a half-applied state. This inconsistency was enough for me to not trust it when it did work, so I stopped using it.

Honestly, it's too much magic for my taste. And, really, it's not much manual work to create fixup commits for the right commit anyway.