From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: string-bytes and coding systems Date: Fri, 10 Mar 2017 04:02:33 -0500 Message-ID: References: <87r327nyto.fsf@ericabrahamsen.net> <83tw72fnha.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1489136595 12391 195.159.176.226 (10 Mar 2017 09:03:15 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 10 Mar 2017 09:03:15 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Mar 10 10:03:11 2017 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cmGS7-0002xK-6H for geh-help-gnu-emacs@m.gmane.org; Fri, 10 Mar 2017 10:03:11 +0100 Original-Received: from localhost ([::1]:38056 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cmGSD-0006EX-5N for geh-help-gnu-emacs@m.gmane.org; Fri, 10 Mar 2017 04:03:17 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59286) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cmGRk-0006EQ-DE for help-gnu-emacs@gnu.org; Fri, 10 Mar 2017 04:02:49 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cmGRh-00056j-Ru for help-gnu-emacs@gnu.org; Fri, 10 Mar 2017 04:02:48 -0500 Original-Received: from [195.159.176.226] (port=45499 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cmGRh-00056W-K8 for help-gnu-emacs@gnu.org; Fri, 10 Mar 2017 04:02:45 -0500 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1cmGRW-0007vq-E3 for help-gnu-emacs@gnu.org; Fri, 10 Mar 2017 10:02:34 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 11 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:cPe5iaQYQmyRobL6EaPRcqVY/Dg= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:112508 Archived-At: >> When this text gets written to file it will also be encoded as >> utf-8, ergo testing string lengths with `string-bytes' is going to >> always produce the right results in the final file. > I suggest to use filepos-to-bufferpos to find where to break text into > lines. BTW, filepos-to-bufferpos uses string-bytes (or equivalent data, with the same caveat for raw bytes) for utf-8 buffers ;-) Stefan