David Barnett

I see two possible approaches here: 1. jj only respects .ignore in its own operations 2. jj attempts to bridge the gap with git and other backends to help them...

SGTM, but does that imply that a .ignore file in jj's store would get reflected with a _different_ filename in a git workspace? And would colocated repos end up with...

> I got one ... Abandoning again got rid of it. Oh interesting, yes abandoning a 2nd time seems to get rid of everything. But then `jj new main` after...

Went diving through code to see if I could figure out where to get started fixing this. [test_local_working_copy::test_gitsubmodule](https://github.com/martinvonz/jj/blob/dd8ec3dece9310f27673883e10706a8028ed2220/lib/tests/test_local_working_copy.rs#L1091) looks like it might be close to the repro case we'd need,...

Yup, it even prints out some messages about "ignoring submodules" somewhere in there. I suspect what's happening is that when I move the working copy back in time, the files...

Ok, it makes a little more sense to me now why it _does_ work that way in practice, after spending some time tinkering with submodule cases. In vanilla git, moving...

Will need to be careful enabling new files to be picked up and synced where they weren't previously because some users could be relying on the current behavior ignoring those....

Heya @PhilipMetzger @arxanas, think there's anything here or in related issues that could use help? Is #4021 still a good place to look for the latest? I got some coding...

Dupe of #1966, right? Although this one has better description/explanations.

@kody start-review