From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#22303: 24.5; toggle-truncate-lines not mentioned in docstring for truncate-lines nor in elisp manual Date: Mon, 04 Jan 2016 19:11:31 +0200 Message-ID: <837fjp6zi4.fsf@gnu.org> References: <568A3BA9.8000300@lsv.fr> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1451927550 6871 80.91.229.3 (4 Jan 2016 17:12:30 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 4 Jan 2016 17:12:30 +0000 (UTC) Cc: 22303-done@debbugs.gnu.org To: phs@lsv.fr Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Jan 04 18:12:14 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1aG8fx-0000pk-W7 for geb-bug-gnu-emacs@m.gmane.org; Mon, 04 Jan 2016 18:12:11 +0100 Original-Received: from localhost ([::1]:46410 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aG8fx-0001rB-Bq for geb-bug-gnu-emacs@m.gmane.org; Mon, 04 Jan 2016 12:12:09 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59591) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aG8ft-0001pW-V9 for bug-gnu-emacs@gnu.org; Mon, 04 Jan 2016 12:12:06 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aG8fq-00047M-P4 for bug-gnu-emacs@gnu.org; Mon, 04 Jan 2016 12:12:05 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:49567) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aG8fq-00047A-L6 for bug-gnu-emacs@gnu.org; Mon, 04 Jan 2016 12:12:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84) (envelope-from ) id 1aG8fq-0007rw-Fy for bug-gnu-emacs@gnu.org; Mon, 04 Jan 2016 12:12:02 -0500 Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-To: bug-gnu-emacs@gnu.org Resent-Date: Mon, 04 Jan 2016 17:12:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: cc-closed 22303 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Mail-Followup-To: 22303@debbugs.gnu.org, eliz@gnu.org, phs@lsv.fr Original-Received: via spool by 22303-done@debbugs.gnu.org id=D22303.145192749830204 (code D ref 22303); Mon, 04 Jan 2016 17:12:02 +0000 Original-Received: (at 22303-done) by debbugs.gnu.org; 4 Jan 2016 17:11:38 +0000 Original-Received: from localhost ([127.0.0.1]:37786 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aG8fS-0007r5-0F for submit@debbugs.gnu.org; Mon, 04 Jan 2016 12:11:38 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:40248) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aG8fQ-0007qu-S8 for 22303-done@debbugs.gnu.org; Mon, 04 Jan 2016 12:11:37 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aG8fI-0003z6-Ho for 22303-done@debbugs.gnu.org; Mon, 04 Jan 2016 12:11:31 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:36717) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aG8fI-0003z2-E9; Mon, 04 Jan 2016 12:11:28 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3199 helo=HOME-C4E4A596F7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1aG8fH-0002a5-Qo; Mon, 04 Jan 2016 12:11:28 -0500 In-reply-to: <568A3BA9.8000300@lsv.fr> (message from phs on Mon, 4 Jan 2016 10:30:17 +0100) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:111200 Archived-At: > From: phs > Date: Mon, 4 Jan 2016 10:30:17 +0100 > > In general, changing the value of `truncate-lines' should be done via > `toggle-truncate-lines' not by `(setq truncate-lines ..)' > > However the documentation string for `truncate-lines' does not mention > the existence of `toggle-truncate-lines', nor is it mentioned in the > elisp manual (section "37.3 Truncation"). > > It seems that modifying `truncate-lines' with just `(setq ..)' may > suffer from redisplay problems, see > http://emacs.stackexchange.com/questions/19228 for a way to trip the > problem from emacs -Q. Thanks for pointing this out. The answers on stackexchange are incorrect: there's nothing wrong with setting 'truncate-lines' directly. The situation described there revealed a bug, which I just fixed for the next release. I see no need to change the documentation in this regard.