[plt-scheme] more macro

From: Jens Axel Søgaard (jensaxel at soegaard.net)
Date: Mon Aug 7 07:22:50 EDT 2006

Ivanyi Peter skrev:
> Hi there,
> I have noticed the following with macros. I could use macros
> to remove the quote sign, for example:
> (define-syntax m1
>   (lambda (x)
>     (syntax-case x ()
>       ((_ 'f e1 e2 ...)
>        (syntax (f e1 e2 ...))))))

Since 'f is short for (quote f) it might be worth trying

  (define-syntax m1
    (lambda (x)
      (syntax-case x (quote)
        ((_ 'f e1 e2 ...)
         (syntax (f e1 e2 ...))))))

> Usage:
> (syntax-object->datum (expand-once #'(m1 't a b c d)))
> Result:
> (t a b c d)
> I do not know whether it is a feature or a bug. 

Which result did you expect?

Jens Axel Søgaard

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