ref: ee42f7f682c2279b0e24f70979f41436ff655cd4
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 ;; }