;; say it didn't work.
(:method (value type wanted)
(if (eql type wanted) value
- (error "Incorrect type: expected ~A but found ~A" wanted type)))
+ (error "Incorrect type: expected ~(~A~) but found ~(~A~)"
+ wanted type)))
;; If the caller asks for type T then give them the raw thing.
(:method (value type (wanted (eql t)))