I agree that regardless of the underlying issue, the docs should match the behavior. Additionally, I hope the docs will note the exact release at which the behavior changed.

@serhiy-storchaka do you have any opinion on this? I took a brief look at your commit cited above, and it appears that you were trying to suppress an unwanted stack trace display. Did you intend for the exit status behavior to also change?

I stand by my original assessment, as a somewhat dissatisfied user of the `atexit` feature. However I also acknowledge that at this point, CPython already has a subtle backwards-compatibility issue and further change might not be so welcome. I'm happy to discuss this further if people are interested, but I'm not going to lobby hard :)