From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Wolfgang Jenkner Newsgroups: gmane.emacs.devel Subject: Re: tail-call elimination Date: Tue, 11 Dec 2012 15:30:23 +0100 Message-ID: <85ehiwzm7e.fsf@iznogoud.viz> References: <50C6CF11.2000706@dancol.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1355236847 19509 80.91.229.3 (11 Dec 2012 14:40:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 11 Dec 2012 14:40:47 +0000 (UTC) Cc: Troels Nielsen , Daniel Colascione , Chris Gray , emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Dec 11 15:40:58 2012 Return-path: Envelope-to: ged-emacs-devel@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 1TiR0z-0007oD-0S for ged-emacs-devel@m.gmane.org; Tue, 11 Dec 2012 15:40:57 +0100 Original-Received: from localhost ([::1]:60537 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TiR0m-0004Lq-De for ged-emacs-devel@m.gmane.org; Tue, 11 Dec 2012 09:40:44 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:41435) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TiR0c-0004Kc-2k for emacs-devel@gnu.org; Tue, 11 Dec 2012 09:40:42 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TiR0V-0003R5-LS for emacs-devel@gnu.org; Tue, 11 Dec 2012 09:40:33 -0500 Original-Received: from mx09.lb01.inode.at ([62.99.145.9]:60646 helo=mx.inode.at) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TiR0V-0003QL-E0 for emacs-devel@gnu.org; Tue, 11 Dec 2012 09:40:27 -0500 Original-Received: from [91.119.206.19] (port=11879 helo=iznogoud.viz) by smartmx-09.inode.at with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.69) (envelope-from ) id 1TiR0S-0000qC-8E; Tue, 11 Dec 2012 15:40:24 +0100 Original-Received: from wolfgang by iznogoud.viz with local (Exim 4.80.1 (FreeBSD)) (envelope-from ) id 1TiR0P-0000fw-EC; Tue, 11 Dec 2012 15:40:21 +0100 Mail-Followup-To: Stefan Monnier , Daniel Colascione , Chris Gray , emacs-devel@gnu.org, Troels Nielsen User-Agent: Gnus/5.130006 (Ma Gnus v0.6) Emacs/24.3.50 (berkeley-unix) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x X-Received-From: 62.99.145.9 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:155469 Archived-At: On Tue, Dec 11 2012, Stefan Monnier wrote: >>> I have attached a patch that implements tail-call elimination for >>> a subset of emacs lisp. This will be helpful in allowing coding >>> styles which emphasize tail recursion, such as is usual in languages >>> like Scheme. > If it speeds up execution, I think it can be worth the trouble. What about Troels Nielsen's implementation of the same feature? http://permalink.gmane.org/gmane.emacs.devel/153399 Wolfgang