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: get-live-buffer primitive Date: Fri, 14 Sep 2012 11:00:59 +0200 Message-ID: <5052F24B.9070304@gmx.at> References: <505190CB.5010809@yandex.ru> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1347613257 25531 80.91.229.3 (14 Sep 2012 09:00:57 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 14 Sep 2012 09:00:57 +0000 (UTC) Cc: dmantipov@yandex.ru, Stefan Monnier , emacs-devel@gnu.org To: rms@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Sep 14 11:01:00 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 1TCRlk-00010o-HA for ged-emacs-devel@m.gmane.org; Fri, 14 Sep 2012 11:01:00 +0200 Original-Received: from localhost ([::1]:51213 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCRlg-0002wJ-RO for ged-emacs-devel@m.gmane.org; Fri, 14 Sep 2012 05:00:56 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:33461) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCRld-0002vT-Jj for emacs-devel@gnu.org; Fri, 14 Sep 2012 05:00:54 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TCRlW-0005VZ-E9 for emacs-devel@gnu.org; Fri, 14 Sep 2012 05:00:53 -0400 Original-Received: from mailout-de.gmx.net ([213.165.64.22]:52524) by eggs.gnu.org with smtp (Exim 4.71) (envelope-from ) id 1TCRlW-0005VP-38 for emacs-devel@gnu.org; Fri, 14 Sep 2012 05:00:46 -0400 Original-Received: (qmail invoked by alias); 14 Sep 2012 09:00:45 -0000 Original-Received: from 62-47-36-217.adsl.highway.telekom.at (EHLO [62.47.36.217]) [62.47.36.217] by mail.gmx.net (mp030) with SMTP; 14 Sep 2012 11:00:45 +0200 X-Authenticated: #14592706 X-Provags-ID: V01U2FsdGVkX19X09AUADlXIzrwgkhLk5eiZZcfj2cMGqj0sF1GQW 14ehEH3xP7gR6O In-Reply-To: X-Y-GMX-Trusted: 0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 213.165.64.22 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:153294 Archived-At: > Meanwhile, `get-buffer' will not find a dead buffer by name. > So I don't see a need to create a `get-live-buffer' function. > Unless the purpose were only to get an error if the argument > is a dead buffer. Just a few examples that could benefit from such a function: Fset_window_buffer has buffer = Fget_buffer (buffer_or_name); CHECK_BUFFER (buffer); if (NILP (BVAR (XBUFFER (buffer), name))) error ("Attempt to display deleted buffer"); Finsert_buffer_substring buf = Fget_buffer (buffer); if (NILP (buf)) nsberror (buffer); bp = XBUFFER (buf); if (!BUFFER_LIVE_P (bp)) error ("Selecting deleted buffer"); Fcompare_buffer_substrings buf1 = Fget_buffer (buffer1); if (NILP (buf1)) nsberror (buffer1); bp1 = XBUFFER (buf1); if (!BUFFER_LIVE_P (bp1)) error ("Selecting deleted buffer"); ... buf2 = Fget_buffer (buffer2); if (NILP (buf2)) nsberror (buffer2); bp2 = XBUFFER (buf2); if (!BUFFER_LIVE_P (bp2)) error ("Selecting deleted buffer"); Fset_buffer buffer = Fget_buffer (buffer_or_name); if (NILP (buffer)) nsberror (buffer_or_name); if (!BUFFER_LIVE_P (XBUFFER (buffer))) error ("Selecting deleted buffer"); martin