Probably I am mixing literal identifiers from distinct expansion phases. Nevertheless, I don't understand the behaviour of the program below. Explanation would be very welcome. I have looked into the expanded code with the macro stepper, but I could not find any code looking for the literals. #lang racket (require (for-syntax racket)) (define-syntax (try stx) (define-syntax (stx-case stx) (syntax-case stx () ((_ stx-expr clause ...) #'(syntax-case stx-expr (+ -) clause ...)))) (stx-case stx ((_ +) #''plus) ((_ -) #''minus) ((_ x) #''x))) (try +) ; -> plus; as expected (try -) ; -> plus; expected - (try a) ; -> plus; expected a I did this in the definitions window of DrRacket, version 6.1.1 [3m]. Language: racket [custom]; memory limit: 2000 MB. Thanks, Jos Koot
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