[Gsll-devel] Fwd: [clisp-list] Is this a bug, or does it violate the standard?

[Mirko Vukovic]

See below for words of wisdom regarding loop and macros.  I have seen
that mentioned before.


---------- Forwarded message ----------
From: Pascal J. Bourguignon <pjb at informatimago.com>
Date: Sun, Feb 1, 2009 at 9:59 PM
Subject: Re: [clisp-list] Is this a bug, or does it violate the standard?
To: clisp-list <clisp-list at lists.sourceforge.net>
Cc: Mirko Vukovic <mirko.vukovic at gmail.com>



On Feb 2, 2009, at 3:20 AM, Mirko Vukovic wrote:
>
> Indeed, the style "looked" bad, having a simple form in the middle of
> compound forms..  The example was a distillation of a code from a
> package that was compiling OK on SBCL, but failed on CLISP.
>
> I like the idea of macrolet.  And I will remember the (progn ...) trick as well.


Which reminds me to mention that LOOP shouldn't be used in the
expansion of macros because of this kind of problems...
When writting macros, it's safer to use DO, DO*, DOLIST, DOTIMES
or even TAGBODY/GO in the expansion.

--
__Pascal Bourguignon__
http://www.informatimago.com