Re: [Scheme-reports] Question regarding interaction between new syntax-rules extensions

[Peter Bex <Peter.Bex@x>]

On Sat, May 25, 2013 at 02:21:53PM +0200, Peter Bex wrote:
> And what happens when mixing literals with ellipsis identifiers?
> 
> (define ___ 2)
> (define-syntax match-ellipsis-literals
>   (syntax-rules ___ (___)
>     ((_ x ___) (list x ___))))
> 
> (match-ellipsis-literals 1) => (1 2), (1 underscore), or (1)?
> (match-ellipsis-literals 1 2) => (1 2), (1 underscore), or error?
> (match-ellipsis-literals 1 ___) => (1 underscore), error?

That list makes no sense.  I think it should be

(match-ellipsis-literals 1) => (1 2), (1) or error?
(match-ellipsis-literals 1 3) => (1 2), (1 3), or error?
(match-ellipsis-literals 1 ___) => (1 2), or error?

Cheers,
Peter
-- 
http://www.more-magic.net

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