Re: [cclan-list] ASDF, readtables and with-operation

[Gary K. <gw...@me...>]

Hi Attila,

Thanks. The problem I'm having is that I have multiple systems. =20
System A is changing the readtable and system B (loaded after A) is =20
smashing into A's changes.


On Jan 16, 2007, at 3:34 PM, Attila Lendvai wrote:

>> thoughts very welcome.
>
> i wonder why you need this. i'm also playing a lot with the readtable,
> but compile-file rebinds *readtable*, so you are free to setf it as
> you like. take a look at this:
>
> (defmacro enable-sharp-boolean-syntax ()
>  "Copies *readtable* and enables #t and #f readers for t and nil in =20=

> the copy."
>  '(eval-when (:compile-toplevel :execute)
>    (setf *readtable* (copy-readtable *readtable*))
>    (%enable-sharp-boolean-syntax)))
>
> (defun %enable-sharp-boolean-syntax ()
>  (set-dispatch-macro-character
>   #\# #\t
>   (lambda (s c n)
>     (declare (ignore s c n))
>     t))
>  (set-dispatch-macro-character
>   #\# #\f
>   (lambda (s c n)
>     (declare (ignore s c n))
>     nil)))
>
> and at the top of the files i simply put:
>
> (enable-sharp-boolean-syntax)
>
> i may be missing something, though.
>
> --=20
> - attila
>
> "- The truth is that I've been too considerate, and so became
> unintentionally cruel...
> - I understand.
> - No, you don't understand! We don't speak the same language!"
> (Ingmar Bergman - Smultronst=E4llet)

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