try/stop

[caub]

Just a neutral idea, I was reading Why Else and I thought that stop (e) {..} or .stop(e=>{..}) could make sense, it has the semantic of cancellation to me, and is clear, unambiguous.

But it adds one more language keyword as a drawback

[domenic]

See the "Why Else" document for why we have to reuse an existing keyword. I would have preferred "except" or "recover" myself, but unfortunately it's future-hostile.

[caub]

Ok, I see, the transition with existing code isn't easy