[racket] `'unquote -- error or not?

FWIW, I'm right in line with this rationale.

Robby

On Thu, Jul 7, 2011 at 9:13 AM, Matthias Felleisen <matthias at ccs.neu.edu> wrote:
>
> On Jul 7, 2011, at 10:01 AM, Bas Steunebrink wrote:
>
>> Ciao a tutti,
>>
>> When I type `'unquote in DrRacket, an error is thrown:
>>
>> > `'unquote
>> (X) unquote: expects exactly one expression in: (unquote)
>>
>> I understand why this error occurs from the way quasiquote is expanded; see e.g. http://community.schemewiki.org/?scheme-faq-language#qqmacro (I guess DrRacket works similarly). Still, I feel the result should be just 'unquote. What do you think?
>
> No, your use of backquote explicitly calls for a search for unquote.
>
> If you want the symbol unquote inside of an unquote, you first need to unquote:
>
>> `,'unquote
> unquote
>
> (as in comma = unquote).
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