ref: dd99ac66ac4c14eea361b2b60f91a4907b4c44d2 dir: /test/matchunion.myr/
type u = union `Foo `Bar `Baz `Quux ;; const main = { var v v = `Foo match v `Bar: -> 42 ;; `Baz: -> 81 ;; `Foo: -> 84 ;; `Quux: -> 123 ;; ;; }