ref: 1b71d38fed9e132d36aff99b74217b2d6ec83ccd 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 ;; ;; }