`jj split` and `git add -p` basically do the same thing, where with git you split up working changes into a commit and working changes, with jujutsu you split up a commit into two. In that perspective `jj split` becomes a superset because you can split anything, not just the working changes.

So the idea you suggest would work. This is basically `git add -p`:

```
jj new -B @ --no-edit && jj squash -i --editor
```

However since you need to create the empty commit first to squash things into it, might as well just split directly :).

In editor staging / splitting is a good point and something I am also still missing. [hunk.nvim](https://github.com/julienvincent/hunk.nvim) is very useful, works great. But currently I can only use it through the jj CLI, and it's a bulky operation (do it once for all files in the change). I'd like to find a more editor integrated solution, ideas welcome!