[plt-scheme] `match' weirdness

[Casey Klein]

The expression

   (match 1
     [2 3]
     [_ (values 4 5)])

reduces to (values 4 5) but

   (match 1
     [(or 2) 3]
     [_ (values 4 5)])

produces "context expected 1 value, received 2 values: 4 5." Is this a
bug in `match'?