ref: 682c4ce6114cb44e2ad95a75269585f6e1da8150
dir: /test/matchunion.myr/
use std /* checks that union matching works, at least on the key. exits with 84. */ type u = union `Foo `Bar `Baz `Quux ;; const main = { var v v = `Foo match v `Bar: -> 42 ;; `Baz: -> 81 ;; `Foo: -> 84 ;; `Quux: -> 123 ;; ;; }