Re: [Scheme-reports] 'else' auxiliary syntax Per Bothner (17 Oct 2014 17:07 UTC)
Re: [Scheme-reports] 'else' auxiliary syntax John Cowan (17 Oct 2014 17:33 UTC)
Re: [Scheme-reports] 'else' auxiliary syntax Peter Bex (17 Oct 2014 19:26 UTC)
Re: [Scheme-reports] 'else' auxiliary syntax John Cowan (18 Oct 2014 00:57 UTC)
Re: [Scheme-reports] 'else' auxiliary syntax Per Bothner (18 Oct 2014 07:03 UTC)
Re: [Scheme-reports] 'else' auxiliary syntax John Cowan (19 Oct 2014 01:42 UTC)
Re: [Scheme-reports] 'else' auxiliary syntax Alex Shinn (20 Oct 2014 04:06 UTC)
Re: [Scheme-reports] 'else' auxiliary syntax Alex Shinn (05 Nov 2014 13:50 UTC)
Re: [Scheme-reports] 'else' auxiliary syntax John Cowan (06 Nov 2014 02:29 UTC)

Re: [Scheme-reports] 'else' auxiliary syntax John Cowan 17 Oct 2014 17:29 UTC

Per Bothner scripsit:

> Is the following reasonable (for r7rs)?
>
> (define-syntax else
>    (syntax-rules ()
>      ((_ . rest)
>       (syntax-error "invalid use of 'else"))))

That's a good definition, yes.  It's also fine for R5RS, since R5RS leaves
the question of binding open.

--
John Cowan          http://www.ccil.org/~cowan        cowan@ccil.org
Said Agatha Christie / To E. Philips Oppenheim
"Who is this Hemingway? / Who is this Proust?
Who is this Vladimir / Whatchamacallum,
This neopostrealist / Rabble?" she groused.
        --George Starbuck, Pith and Vinegar

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