> I assume there's some reason why the parser can't read `{ x, y }`, as ruby is notoriously hard to add syntax to. Something in the parser using the colon afte

> I assume there's some reason why the parser can't read `{ x, y }`, as ruby is notoriously hard to add syntax to. Something in the parser using the colon after the first identifier to disambiguate between hashes and blocks, probably.