[Chicken-users] Re: Stupid backquote/unquote question

[Hans Nowak]

felix winkelmann wrote:
> On Thu, Feb 21, 2008 at 4:39 PM, Hans Nowak <address@hidden> wrote:
> >  I guess I'll have to use eval, but I don't think it's going to work if I use
> >  this kind of s-expr inside a function?  Like
> >
> >    (define (blah x)
> >      (sasm (jmp ,x)))
> >
> >  (where SASM is the name of the macro that handles this kind of s-expressions).
>
> This should work:
>
> #;1> (define-macro (foo x) (list 'quasiquote x))
> #;2> (foo 33)
> 33
> #;3> (foo (3 + 4 is ,(+ 3 4)))
> (3 + 4 is 7)
> #;4>
>
> You macro can for example expand into a call to a function
> that does the actual processing of the (implicitly) quasiquoted
> argument.

Excellent, that works.  I can now use something like

(define-macro (sasm . body)
  (list 'map 'translate-sasm (list 'quasiquote body)))

Thanks!

--Hans