Feature request: list the missing patterns

[chtenb]

Currently it just says: "For example, the pattern '_' is not covered."
It would be nice if it said, subclass X is missing.

[shuebner]

I agree that that would be nice. You can see from the closed issues that I invest very little time in this. In fact that is the reason why it only suppresses existing diagnostics instead of issuing its own.

Having said that, what you suggest should be a one-time effort only. I may look into it in a couple of weeks.

You can always suggest a PR on your own to expedite things.