This works: #lang racket (define-syntax (x y) (syntax-case y () (_ (syntax (quote monkey))))) x ; -> monkey This does not work #lang racket/base (define-syntax (x y) (syntax-case y () (_ (syntax (quote monkey))))) gives the expansion time error: syntax-case: unbound identifier in the transformer environment; also, no #%app syntax transformer is bound in: syntax-case This does work: #lang racket/base (require (for-syntax (only-in racket/base syntax syntax-case))) (define-syntax (x y) (syntax-case y () (_ (syntax (quote monkey))))) x ; -> monkey And this works too: #lang racket/base (syntax-case #'x () #''monkey) -> monkey This puzzles me. Both syntax-case and syntax are provided by both racket/base and racket. It is as though racket provides syntax and syntax-case for syntax too and that syntax/base does not. Probably I am misunderstanding things, but what? Thanks, Jos
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