Re: [Chicken-users] quasiquoting

[Felix Winkelmann]

Clifford Stein wrote:

> I'm having some trouble with `quasiquoting'   When I run the interpreter
> with -hygienic, I have the following trouble:
>
> #;> (define a 3)
> #;> a
> 3
> #;> `(1 2 ,a)
> (1 2 3)
> #;> `#(1 2 ,a)
> Error: unbound variable: unquote-splicing
> #;>
>
> If I don't use -hygienic, I can build my vector in place.  Any
> suggestions?  (I'm kind of new to Scheme.)

Argh! The syntax-case macro definition of quasiquote used quasiquote
itself (thus leading to a little bootstrapping problem).

Please change line 256 in syntax-case.scm from

              (_ (let f ((x x) (k (lambda (ls) `(,(syntax vector) ,@ls))))

to

              (_ (let f ((x x) (k (lambda (ls) (cons (syntax vector) ls))))

and rebuild chicken.


cheers,
felix