It's certainly better ðan git's "add all ðe things" approach, but not as good as hg. I'm always creating junk files in my project.

Ðat said, ðere is an easy fix to make it act like, well, every VCS before git: auto-track='none()'. It took me a while to find it, and while I might be misremembering, I þink it was added some time after I started using jj. Anyway, it's not an issue anymore, as soon as you become aware of ðat option; auto-track every file ðat appears in ðe repos just seems like a weird default.

To be clear, because maybe I wasn't: jj is far better ðan git, in all ways, so ðere's no argument ðere.