Re: symbol is nested in #{ ...... }#

[Zelphir Kaltstahl <zelphirkaltstahl@posteo.de>]

Hello Damien,

That is probably, because keywords themselves can look different in Kawa and Racket.

https://www.gnu.org/software/kawa/Keywords.html (mentions both syntaxes, but 
also mentions #:name being more portable)

https://docs.racket-lang.org/guide/keywords.html (only mentions #:name syntax).

Regards,
Zelphir

On 1/4/24 21:12, Damien Mattei wrote:
> i understand not all.
> i suppose it makes sense .
> in fact my problem was parsing a scheme program to generate another scheme
> program.
> So i'm in the realm of simple text and as i was just searching the good
> display i did not understand more the problem.
>
> and even between kawa and racket behavior differs on keywords as in this
> example:
>
> #|kawa:1|# (string->keyword "apple")
> apple:
>
> Racket:
>> (string->keyword "apple")
> '#:apple
>
> Damien
>
> On Thu, Jan 4, 2024 at 8:05 PM Thompson, David <dthompson2@worcester.edu>
> wrote:
>
>> On Thu, Jan 4, 2024 at 6:36 AM Damien Mattei <damien.mattei@gmail.com>
>> wrote:
>>> thank you very much Tomas,
>>> it solved my problem:
>>> (symbol->keyword (list->symbol ....
>>> me too i was digging the manual for 2 hours :-)
>>> Damien
>>> note: seems a bit weird anyway that guile react differently in this case
>>> than Kawa and Racket
>> Guile's behavior makes sense to me. #{...}# is syntax for symbols, not
>> keywords. Symbols can contain any arbitrary characters. Starting a
>> symbol with "#:" doesn't make it a keyword. Would you expect
>> (string->symbol "#:hello") to return a keyword? I wouldn't.
>>
>> - Dave
>>
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