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Re: Bug in eval-string?

From: Matthias Koeppe
Subject: Re: Bug in eval-string?
Date: Fri, 09 Aug 2002 11:06:34 +0200
User-agent: Gnus/5.090004 (Oort Gnus v0.04) Emacs/21.1.80 (sparc-sun-solaris2.7)

Marius Vollmer <address@hidden> writes:

> What about adding "with" as a general dynamic scoping construct?
>   (with ((current-module) boxx)
>      ...)

Please don't.

AFAIK, dynamic-scoping hacks of this flavor are commonly known as
FLUID-LET in Scheme:

 - Syntax: fluid-let `(BINDINGS ...)' FORMS...

     (fluid-let ((VARIABLE INIT) ...)

An implementation can be found in SLIB.  Due to Guile's generalized
set!, FLUID-LET also carries over to places like (CURRENT-MODULE)
instead of VARIABLE, if CURRENT-MODULE is a procedure-with-setter.


Matthias Köppe --

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