From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Newsgroups: gmane.lisp.guile.devel Subject: define-syntax Date: Tue, 15 Jun 2010 22:48:46 +0200 Message-ID: <87bpbcm381.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: dough.gmane.org 1276634958 24921 80.91.229.12 (15 Jun 2010 20:49:18 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 15 Jun 2010 20:49:18 +0000 (UTC) To: guile-devel@gnu.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Tue Jun 15 22:49:17 2010 connect(): No such file or directory Return-path: Envelope-to: guile-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1OOd4K-0004dQ-8f for guile-devel@m.gmane.org; Tue, 15 Jun 2010 22:49:12 +0200 Original-Received: from localhost ([127.0.0.1]:35260 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OOd4I-0000hr-OF for guile-devel@m.gmane.org; Tue, 15 Jun 2010 16:49:10 -0400 Original-Received: from [140.186.70.92] (port=33648 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OOd48-0000h2-5h for guile-devel@gnu.org; Tue, 15 Jun 2010 16:49:01 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OOd47-0003w5-0i for guile-devel@gnu.org; Tue, 15 Jun 2010 16:48:59 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:42465) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OOd46-0003pd-Rd for guile-devel@gnu.org; Tue, 15 Jun 2010 16:48:58 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1OOd43-0004Vl-NZ for guile-devel@gnu.org; Tue, 15 Jun 2010 22:48:55 +0200 Original-Received: from acces.bordeaux.inria.fr ([193.50.110.5]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 15 Jun 2010 22:48:55 +0200 Original-Received: from ludo by acces.bordeaux.inria.fr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 15 Jun 2010 22:48:55 +0200 X-Injected-Via-Gmane: http://gmane.org/ connect(): No such file or directory Original-Lines: 29 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: acces.bordeaux.inria.fr X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 27 Prairial an 218 de la =?iso-8859-1?Q?R=E9volution?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 83C4 F8E5 10A3 3B4C 5BEA D15D 77DD 95E2 EA52 ECF4 X-OS: x86_64-unknown-linux-gnu User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux) Cancel-Lock: sha1:VByx0SDR/Ng7aS9Zpi8hxZbyv2A= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.devel:10487 Archived-At: Hello, >From R6RS Section 10: define-syntax form The expander expands and evaluates the right-hand-side expression and binds the keyword to the resulting transformer. Thus I think the following should work: (define-syntax + (let ((plus +)) ;; `+' should resolve to whatever `+' is bound to ;; before this definition (lambda (stx) (syntax-case stx () ((_ args ...) (apply plus (map syntax->datum #'(args ...)))))))) But it fails when expanding the macro: scheme@(guile-user)> (+ 2 3) Throw to key `wrong-type-arg': ERROR: In procedure vm-debug-engine: ERROR: Wrong type to apply: # Thoughts? Thanks, Ludo’.