From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: Tom Lord Newsgroups: gmane.lisp.guile.devel Subject: Re: Internal defines Date: Mon, 10 Nov 2003 20:33:43 -0800 (PST) Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Message-ID: <200311110433.UAA23193@morrowfield.regexps.com> References: <3FAEC259.302@dirk-herrmanns-seiten.de> <87ekwf63xu.fsf@raven.i.defaultvalue.org> <200311110311.TAA22963@morrowfield.regexps.com> <3FB05C97.9060101@cs.uvm.edu> NNTP-Posting-Host: deer.gmane.org X-Trace: sea.gmane.org 1068524433 9099 80.91.224.253 (11 Nov 2003 04:20:33 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Tue, 11 Nov 2003 04:20:33 +0000 (UTC) Cc: mvo@zagadka.de, guile-devel@gnu.org, rlb@defaultvalue.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Tue Nov 11 05:20:30 2003 Return-path: Original-Received: from monty-python.gnu.org ([199.232.76.173]) by deer.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 1AJQ0z-0001Ai-00 for ; Tue, 11 Nov 2003 05:20:29 +0100 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.24) id 1AJQy3-0000Ey-0u for guile-devel@m.gmane.org; Tue, 11 Nov 2003 00:21:31 -0500 Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.24) id 1AJQx8-0008VX-PM for guile-devel@gnu.org; Tue, 11 Nov 2003 00:20:34 -0500 Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.24) id 1AJQwZ-0007kj-M9 for guile-devel@gnu.org; Tue, 11 Nov 2003 00:20:30 -0500 Original-Received: from [65.234.195.251] (helo=morrowfield.regexps.com) by monty-python.gnu.org with esmtp (Exim 4.24) id 1AJQwQ-0007Nn-On for guile-devel@gnu.org; Tue, 11 Nov 2003 00:19:51 -0500 Original-Received: (from lord@localhost) by morrowfield.regexps.com (8.9.1/8.9.1) id UAA23193; Mon, 10 Nov 2003 20:33:43 -0800 (PST) (envelope-from lord@morrowfield.regexps.com) Original-To: dvanhorn@cs.uvm.edu In-reply-to: <3FB05C97.9060101@cs.uvm.edu> (message from David Van Horn on Mon, 10 Nov 2003 21:50:47 -0600) X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.2 Precedence: list List-Id: Developers list for Guile, the GNU extensibility library List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: main.gmane.org gmane.lisp.guile.devel:2993 X-Report-Spam: http://spam.gmane.org/gmane.lisp.guile.devel:2993 > From: Tom Lord > Guile currently does not detect that error and simply returns 6 for > the second, error-laden, form. Thus, Guile's conformance is saved in > this instance by the distinction between "is an error" and "an error > is signaled". > It is _slightly_ intimidating to think of what would be required of an > implementation, especially an SCM-derived implementation, to actually > detect that error. Overall, Guile suffers from the sin of SCM -- of > not making expansion and evaluation separate phases. I just wanted to add that the SCM-family's approach to macros _is_ intrinsicly useful -- as a kind of primitive for implementing graph-rewriting systems -- even though it's not (without extreme contortions) appropriate for Scheme macros. It might be fun to see if someone can make a useful normal-order evaluation functional langauge using SCM's defmacro facility.... -t _______________________________________________ Guile-devel mailing list Guile-devel@gnu.org http://mail.gnu.org/mailman/listinfo/guile-devel