You can just look at the diff when you do a pull request, no prayer needed, and if you want it to be “surgical” in that way, your prompt (and agents.md) can be specific.
replyYou can also unit test the function to better assure behavior didn’t change.
Indeed, that's what I do. I inspect the diff, though if it's an indentation change the entire block will be marked changed.
replyStill not an excuse to not read every line of course...
Unit tests give me the confidence that at least those tested logic paths are unaffected.
Sometimes with older codebases one cannot assume the paths have adequate test coverage.