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

Yes I get that feeling as well. :-)

 > (symbol? `,'unquote)
#t
 > (symbol? `,''unquote)
#f

I really wanted the latter. :-)

Bas


On 7/7/11 16:38 PM, Robby Findler wrote:
> Or maybe this is the usual printer confusion making this conversation
> confusing. :)
>
> On Thu, Jul 7, 2011 at 9:36 AM, Matthias Felleisen<matthias at ccs.neu.edu>  wrote:
>> you have one too many ' if that's what you want
>>
>>
>> On Jul 7, 2011, at 10:33 AM, Bas Steunebrink wrote:
>>
>>> Thanks for the fast answers!
>>> Actually I wanted to get 'unquote inside of a quasiquote; I'm now using:
>>> `(... ,''unquote ...)
>>> It ain't pretty but it appears to do the job! :-)
>>>
>>> Bas
>>>
>>>
>>> On 7/7/11 16:20 PM, Robby Findler wrote:
>>>> 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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