From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM Date: Wed, 12 May 2021 16:50:15 +0300 Message-ID: <83tun82h9k.fsf@gnu.org> References: <0ed1c9c7-26c1-b801-1910-6d5bb50dec3d@yahoo.de> <46c6dd22-ecff-aa7d-e019-1784060574c2@yahoo.de> <83zgx265bm.fsf@gnu.org> <83sg2u5zz5.fsf@gnu.org> <87fsyur1rx.fsf@gnus.org> <87fsyu4jof.fsf@igel.home> <83lf8m5x2c.fsf@gnu.org> <35838176-9518-6c4a-eb71-25ce7cb0ec4e@yahoo.de> <83k0o65vf9.fsf@gnu.org> <87bl9i4g7m.fsf@igel.home> <83cztx5vey.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="2577"; mail-complaints-to="usenet@ciao.gmane.io" Cc: schwab@linux-m68k.org, 48324@debbugs.gnu.org To: Glenn Morris , Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed May 12 15:51:31 2021 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 1lgpGt-0000YJ-1w for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 12 May 2021 15:51:31 +0200 Original-Received: from localhost ([::1]:41674 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lgpGs-0001hm-54 for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 12 May 2021 09:51:30 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53372) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgpGP-0001T4-VG for bug-gnu-emacs@gnu.org; Wed, 12 May 2021 09:51:01 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:55174) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lgpGP-0005Q2-MN for bug-gnu-emacs@gnu.org; Wed, 12 May 2021 09:51:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lgpGP-0000DT-Jz for bug-gnu-emacs@gnu.org; Wed, 12 May 2021 09:51:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 12 May 2021 13:51:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 48324 X-GNU-PR-Package: emacs Original-Received: via spool by 48324-submit@debbugs.gnu.org id=B48324.1620827449809 (code B ref 48324); Wed, 12 May 2021 13:51:01 +0000 Original-Received: (at 48324) by debbugs.gnu.org; 12 May 2021 13:50:49 +0000 Original-Received: from localhost ([127.0.0.1]:38487 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lgpG8-0000Cs-Rn for submit@debbugs.gnu.org; Wed, 12 May 2021 09:50:48 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:42982) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lgpG4-0000Ca-2c for 48324@debbugs.gnu.org; Wed, 12 May 2021 09:50:43 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:58542) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lgpFu-00055T-1Q; Wed, 12 May 2021 09:50:34 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:1887 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgpFY-0006FJ-Dq; Wed, 12 May 2021 09:50:10 -0400 In-Reply-To: (message from Glenn Morris on Tue, 11 May 2021 16:37:51 -0400) 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:206321 Archived-At: > From: Glenn Morris > Cc: Andreas Schwab , 48324@debbugs.gnu.org, rdiezmail-emacs@yahoo.de, larsi@gnus.org > Date: Tue, 11 May 2021 16:37:51 -0400 > > Eli Zaretskii wrote: > > > This should be now fixed on the master branch. > > The change to encode-coding-char in f3f1947e5b5b causes > test subr-string-limit-coding to fail. Ref eg > https://hydra.nixos.org/build/142879118 Thanks, I fixed that. The original test results seemed strange, to say the least: it's as if we shoot first and draw the target later so that it fits. E.g., how can the last 4 bytes of encoding "foóá" with UTF-16 be "\376\377\000\341", with the 2 first bytes coming from the BOM? This actually reveals a design flaw in string-limit: we cannot simply use encode-coding-char to encode the characters one by one. I added a FIXME comment to explain why, as I don't currently have any clever ideas for how to implement it more correctly, except by iterations, which is inelegant. Ideas welcome.