From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.bugs Subject: bug#53236: 26.1; encode-coding-string does not encode the string as expected Date: Fri, 14 Jan 2022 11:00:17 +0100 Message-ID: <87sftq63im.fsf@igel.home> References: <8735lra07e.fsf@metalevel.at> <838rvi3ixp.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="8988"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux) Cc: 53236@debbugs.gnu.org, Markus Triska To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jan 14 11:01:18 2022 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1n8JOX-00027B-SO for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 14 Jan 2022 11:01:17 +0100 Original-Received: from localhost ([::1]:45696 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1n8JOW-00089a-IH for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 14 Jan 2022 05:01:16 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:55032) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n8JOP-00089A-Er for bug-gnu-emacs@gnu.org; Fri, 14 Jan 2022 05:01:09 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:42785) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1n8JOI-0002Ky-97 for bug-gnu-emacs@gnu.org; Fri, 14 Jan 2022 05:01:08 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1n8JOI-00048P-2h for bug-gnu-emacs@gnu.org; Fri, 14 Jan 2022 05:01:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Andreas Schwab Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 14 Jan 2022 10:01:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 53236 X-GNU-PR-Package: emacs Original-Received: via spool by 53236-submit@debbugs.gnu.org id=B53236.164215442115828 (code B ref 53236); Fri, 14 Jan 2022 10:01:02 +0000 Original-Received: (at 53236) by debbugs.gnu.org; 14 Jan 2022 10:00:21 +0000 Original-Received: from localhost ([127.0.0.1]:35688 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1n8JNd-00047D-Dd for submit@debbugs.gnu.org; Fri, 14 Jan 2022 05:00:21 -0500 Original-Received: from mail-out.m-online.net ([212.18.0.9]:54995) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1n8JNb-000474-V5 for 53236@debbugs.gnu.org; Fri, 14 Jan 2022 05:00:20 -0500 Original-Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4JZxcg1fVQz1qwyG; Fri, 14 Jan 2022 11:00:19 +0100 (CET) Original-Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4JZxcg03L0z1qqkC; Fri, 14 Jan 2022 11:00:18 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Original-Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id yXXQtnQIG5jn; Fri, 14 Jan 2022 11:00:18 +0100 (CET) X-Auth-Info: AT1AHeF5a3lseaUeZOSXNSMzKx5BnNzxX4eZjYvV6tXQTkNKsXENRXiN4co43scL Original-Received: from igel.home (ppp-46-244-178-192.dynamic.mnet-online.de [46.244.178.192]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Fri, 14 Jan 2022 11:00:18 +0100 (CET) Original-Received: by igel.home (Postfix, from userid 1000) id 9B1CE2C323E; Fri, 14 Jan 2022 11:00:17 +0100 (CET) X-Yow: .. ich bin in einem dusenjet ins jahr 53 vor chr... ich lande im antiken Rom... einige gladiatoren spielen scrabble... ich rieche PIZZA... In-Reply-To: <838rvi3ixp.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 14 Jan 2022 08:55:30 +0200") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:224193 Archived-At: On Jan 14 2022, Eli Zaretskii wrote: >> From: Markus Triska >> Date: Thu, 13 Jan 2022 20:45:57 +0100 >> >> Correspondingly, I expect (encode-coding-string "\200" 'utf-8) to yield >> a string equivalent to "\xC2\x80", but that seems not to be the case. I get: >> >> (encode-coding-string "\200" 'utf-8) --> "\200" >> >> And therefore, unexpectedly: >> >> (string= (encode-coding-string "\200" 'utf-8) "\xC2\x80") --> nil > > "\200" is a unibyte string, and encoding unibyte strings returns those > strings without changing them. > > This is not a bug, just a dark corner of encoding/decoding stuff. Or a dark corner of the string syntax. ELISP> (multibyte-string-p "\200") nil ELISP> (multibyte-string-p "\x80") nil ELISP> (multibyte-string-p "\x0080") t ELISP> (encode-coding-string "\x0080" 'utf-8) "\302\200" -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."