From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Mark H Weaver Newsgroups: gmane.lisp.guile.bugs Subject: bug#14859: my-or macro in documentation Date: Sat, 13 Jul 2013 20:41:24 -0400 Message-ID: <87d2qm6ki3.fsf@tines.lan> References: <51E1A1FD.8000104@primfilat.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1373762529 14035 80.91.229.3 (14 Jul 2013 00:42:09 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 14 Jul 2013 00:42:09 +0000 (UTC) Cc: 14859-done@debbugs.gnu.org To: Josep Portella Florit Original-X-From: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Sun Jul 14 02:42:10 2013 Return-path: Envelope-to: guile-bugs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1UyAO9-0006Ub-TB for guile-bugs@m.gmane.org; Sun, 14 Jul 2013 02:42:10 +0200 Original-Received: from localhost ([::1]:51061 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UyAO9-0000Yg-G3 for guile-bugs@m.gmane.org; Sat, 13 Jul 2013 20:42:09 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:48483) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UyAO5-0000YX-WB for bug-guile@gnu.org; Sat, 13 Jul 2013 20:42:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UyAO2-0002Ry-Sh for bug-guile@gnu.org; Sat, 13 Jul 2013 20:42:05 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:59171) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UyAO2-0002Ro-Ps for bug-guile@gnu.org; Sat, 13 Jul 2013 20:42:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1UyAO2-0005Av-ED for bug-guile@gnu.org; Sat, 13 Jul 2013 20:42:02 -0400 Resent-From: Mark H Weaver Original-Sender: "Debbugs-submit" Resent-To: bug-guile@gnu.org Resent-Date: Sun, 14 Jul 2013 00:42:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: cc-closed 14859 X-GNU-PR-Package: guile X-GNU-PR-Keywords: Mail-Followup-To: 14859@debbugs.gnu.org, mhw@netris.org, jpf@primfilat.com Original-Received: via spool by 14859-done@debbugs.gnu.org id=D14859.137376251519873 (code D ref 14859); Sun, 14 Jul 2013 00:42:01 +0000 Original-Received: (at 14859-done) by debbugs.gnu.org; 14 Jul 2013 00:41:55 +0000 Original-Received: from localhost ([127.0.0.1]:53485 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1UyANu-0005AR-G0 for submit@debbugs.gnu.org; Sat, 13 Jul 2013 20:41:54 -0400 Original-Received: from world.peace.net ([96.39.62.75]:51144 ident=hope3) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1UyANr-0005AE-OM for 14859-done@debbugs.gnu.org; Sat, 13 Jul 2013 20:41:52 -0400 Original-Received: from 209-6-120-240.c3-0.arl-ubr1.sbo-arl.ma.cable.rcn.com ([209.6.120.240] helo=tines.lan) by world.peace.net with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.72) (envelope-from ) id 1UyANk-0001qS-Fc; Sat, 13 Jul 2013 20:41:44 -0400 In-Reply-To: <51E1A1FD.8000104@primfilat.com> (Josep Portella Florit's message of "Sat, 13 Jul 2013 20:52:45 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-guile@gnu.org List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Original-Sender: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.bugs:7209 Archived-At: Hi! Josep Portella Florit writes: > The my-or example macro in the documentation has a subtle bug. > > (letrec-syntax ((my-or > (syntax-rules () > ((my-or) > #t) > ((my-or exp) > exp) > ((my-or exp rest ...) > (let ((t exp)) > (if exp > exp > (my-or rest ...))))))) > (my-or #f "rockaway beach")) > > In the third rule t is bound to exp, presumably to use t instead of exp > to prevent evaluating exp multiple times, but t is never used and exp is > used again. Indeed! This was reported shortly after the 2.0.9 release, and has been fixed in the stable-2.0 branch. http://bugs.gnu.org/14203 http://git.savannah.gnu.org/gitweb/?p=guile.git;a=commitdiff;h=e006d87ba5942b6e49b39b951413dfe63785a398 Thanks! Mark