From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/69672 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel,gmane.emacs.gnus.general Subject: Re: mm-with-unibyte-current-buffer Date: Mon, 10 May 2010 20:19:16 +0300 Message-ID: <83y6frptd7.fsf@gnu.org> References: Reply-To: Eli Zaretskii NNTP-Posting-Host: lo.gmane.org X-Trace: dough.gmane.org 1273512096 17095 80.91.229.12 (10 May 2010 17:21:36 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 10 May 2010 17:21:36 +0000 (UTC) Cc: ding@gnus.org, emacs-devel@gnu.org To: Katsumi Yamaoka Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon May 10 19:21:34 2010 connect(): No such file or directory Return-path: Envelope-to: ged-emacs-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 1OBWfd-0000hI-8D for ged-emacs-devel@m.gmane.org; Mon, 10 May 2010 19:21:33 +0200 Original-Received: from localhost ([127.0.0.1]:33441 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OBWfb-0002rD-Ue for ged-emacs-devel@m.gmane.org; Mon, 10 May 2010 13:21:31 -0400 Original-Received: from [140.186.70.92] (port=49338 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OBWfQ-0002nO-FE for emacs-devel@gnu.org; Mon, 10 May 2010 13:21:25 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OBWfL-0005Rw-7s for emacs-devel@gnu.org; Mon, 10 May 2010 13:21:20 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:47682) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OBWfL-0005Rm-0D for emacs-devel@gnu.org; Mon, 10 May 2010 13:21:15 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0L2700I00S5RR800@a-mtaout20.012.net.il> for emacs-devel@gnu.org; Mon, 10 May 2010 20:21:14 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([84.229.0.144]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0L2700ARKS7DSZM0@a-mtaout20.012.net.il>; Mon, 10 May 2010 20:21:14 +0300 (IDT) In-reply-to: X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 (beta) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:124668 gmane.emacs.gnus.general:69672 Archived-At: > Date: Mon, 10 May 2010 16:26:29 +0900 > From: Katsumi Yamaoka > Cc: emacs-devel@gnu.org > > I've redefined the `mm-with-unibyte-current-buffer' macro so as > not to bind the default value of `enable-multibyte-characters' to > nil, since it is no longer allowed (causes an error actually) in > Emacs 24. Formerly it did in a multibyte buffer: > > (letf (((default-value 'enable-multibyte-characters) nil)) > (set-buffer-multibyte nil) > bla bla bla > (set-buffer-multibyte t)) > > Now it only does: > > (set-buffer-multibyte nil) > bla bla bla > (set-buffer-multibyte t) Binding the value of enable-multibyte-characters may be a no-no, but _testing_ its value is still possible. So I see no reason to set-buffer-multibyte unconditionally, because you may already be in a unibyte buffer. > Anyway changing the multibyteness of a buffer may cause a serious > trouble to buffer's contents especially if there are multibyte or > 8-bit characters. Like what? I thought we are way past this kind of trouble in Emacs 23.