[racket] Check Syntax arrows for #lang languages

I still need some refinement, but basically it works.

Thanks again,
Jens Axel

2012/7/3 Jens Axel Søgaard <jensaxel at soegaard.net>

> 2012/7/3 Robby Findler <robby at eecs.northwestern.edu>
>
>> This is the function you want, I think:
>>
>> +
>> +(define (sym->original-syntax sym srcloc)
>> +  (define p (open-input-string (symbol->string sym)))
>> +  (port-count-lines! p)
>> +  (match-define (list source-name line column position span) srcloc)
>> +  (set-port-next-location! p line column position)
>> +  (read-syntax source-name p))
>
>
> Sneaky.
>
> Thanks!
>
> /Jens Axel
>
>



-- 
-- 
Jens Axel Søgaard
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