You can already do this if you just open up your change in magit and repeatedly commit pieces of it. I agree it's not super ergonomic since it leaves an old cha

You can already do this if you just open up your change in magit and repeatedly commit pieces of it. I agree it's not super ergonomic since it leaves an old change behind and it requires using magit on top of jj-mode but it's 90% of the way there.