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Re: defvars at compile time
From: |
David Kastrup |
Subject: |
Re: defvars at compile time |
Date: |
Fri, 16 Sep 2005 16:59:42 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) |
Juanma Barranquero <address@hidden> writes:
> On 9/16/05, David Kastrup <address@hidden> wrote:
>
>> Actually, I get "might be undefined at run time" in some similar
>> eval-when-compile wrapped situations.
>
> Maybe with some unusual combination of circumstances.
>
>> And having different semantics
>> during compilation and execution also is not a good idea.
>
> There's almost zero semantics in `(eval-when-compile (defvar xxx))'.
> It doesn't generate code, or assign any value, or affect dynamic
> bindings (on normal situations, which we're discussing now).
Yet. I believe that itmakes a difference with lexical scope, where it
also serves as a declaration that let-bindings to that variable should
have dynamic scope.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum