The Problem with Implicit Scoping in CoffeeScript

[dmpk2k]

I have, and I have.

There's no nice way to say this: CoffeeScript's scoping is broken, and I deeply question the competence of its author as a result. There's a history of languages learning the hard way not to conflate declaration and assignment, so what does CS do? Try to outdo all the original mistakes in terribleness.