From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: martin rudalics Newsgroups: gmane.emacs.devel Subject: Re: Reachable killed buffers Date: Wed, 12 Sep 2012 10:09:45 +0200 Message-ID: <50504349.7090603@gmx.at> References: <504848D0.4020908@yandex.ru> <5048D826.3040103@yandex.ru> <5049C400.8070400@gmx.at> <504DB6DD.9030002@yandex.ru> <504E042E.5040100@yandex.ru> <504ECB49.4050509@yandex.ru> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1347437407 12705 80.91.229.3 (12 Sep 2012 08:10:07 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 12 Sep 2012 08:10:07 +0000 (UTC) Cc: Stefan Monnier , emacs-devel@gnu.org To: Dmitry Antipov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Sep 12 10:10:11 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 1TBi1O-0008A9-QW for ged-emacs-devel@m.gmane.org; Wed, 12 Sep 2012 10:10:06 +0200 Original-Received: from localhost ([::1]:39485 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TBi1L-0005R0-16 for ged-emacs-devel@m.gmane.org; Wed, 12 Sep 2012 04:10:03 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:54586) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TBi1D-0005Qk-Bt for emacs-devel@gnu.org; Wed, 12 Sep 2012 04:10:00 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TBi13-0001p0-V7 for emacs-devel@gnu.org; Wed, 12 Sep 2012 04:09:55 -0400 Original-Received: from mailout-de.gmx.net ([213.165.64.23]:37979) by eggs.gnu.org with smtp (Exim 4.71) (envelope-from ) id 1TBi13-0001ot-Je for emacs-devel@gnu.org; Wed, 12 Sep 2012 04:09:45 -0400 Original-Received: (qmail invoked by alias); 12 Sep 2012 08:09:44 -0000 Original-Received: from 62-47-43-31.adsl.highway.telekom.at (EHLO [62.47.43.31]) [62.47.43.31] by mail.gmx.net (mp027) with SMTP; 12 Sep 2012 10:09:44 +0200 X-Authenticated: #14592706 X-Provags-ID: V01U2FsdGVkX19UQ8MFx5lUO6GMdREUYjyzRvP0ucZJMKp8pDzZzU vX0eC25YtAKLxi In-Reply-To: <504ECB49.4050509@yandex.ru> X-Y-GMX-Trusted: 0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 213.165.64.23 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:153246 Archived-At: +static inline Lisp_Object +discard_killed_buffers (Lisp_Object list) +{ + Lisp_Object tail, prev, tem; + + for (tail = list, prev = Qnil; CONSP (tail); tail = XCDR (tail)) + { + tem = XCAR (tail); + if (CONSP (tem)) + tem = XCAR (tem); + if (BUFFERP (tem) && !BUFFER_LIVE_P (XBUFFER (tem))) + { + if (NILP (prev)) + list = XCDR (tail); + else + XSETCDR (prev, XCDR (tail)); + } + else + prev = tail; + } + return list; +} I'm all in favor for such a routine. But note that users can make these lists circular and that's why I refrained from handling them while input is blocked. I once intended to move related code to C and run a hare/tortoise check but Chong didn't consider it worth the effort. Maybe for the collector it is? martin