[racket] paren-shape

2012/5/13 Danny Yoo <dyoo at hashcollision.org>:
> Does this apply?
>  http://lists.racket-lang.org/dev/archive/2012-March/009205.html

Yes!

The test for curliness must take the (cons orig new)
new possibility into account, and then it just works.

Thanks.

/Jens Axel

(define-for-syntax (curly? stx)
    (let ([p (syntax-property stx 'paren-shape)])
      (and p (or (eqv? p #\{)
                 (and (pair? p)
                      (or (eqv? (car p) #\{)
                          (eqv? (cdr p) #\{)))))))