From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#9286: fill-paragraph destroys URLs Date: Thu, 10 Oct 2019 10:43:07 +0300 Message-ID: <8336g1t59w.fsf@gnu.org> References: <87k4ajbpyi.fsf@jidanni.org> <87obzjhn2b.fsf@stupidchicken.com> <87blupzh41.fsf@gnus.org> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="144846"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 9286@debbugs.gnu.org, cyd@stupidchicken.com, handa@m17n.org, jidanni@jidanni.org, 34463@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Oct 10 09:44:13 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iIT7M-000bUZ-6V for geb-bug-gnu-emacs@m.gmane.org; Thu, 10 Oct 2019 09:44:12 +0200 Original-Received: from localhost ([::1]:34738 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iIT7L-0005kj-2V for geb-bug-gnu-emacs@m.gmane.org; Thu, 10 Oct 2019 03:44:11 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:52597) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iIT7E-0005i9-0v for bug-gnu-emacs@gnu.org; Thu, 10 Oct 2019 03:44:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iIT7C-00075I-W0 for bug-gnu-emacs@gnu.org; Thu, 10 Oct 2019 03:44:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:46183) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iIT7C-00075B-To for bug-gnu-emacs@gnu.org; Thu, 10 Oct 2019 03:44:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iIT7C-0007Hw-QL for bug-gnu-emacs@gnu.org; Thu, 10 Oct 2019 03:44:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 10 Oct 2019 07:44:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 9286 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 9286-submit@debbugs.gnu.org id=B9286.157069341227954 (code B ref 9286); Thu, 10 Oct 2019 07:44:02 +0000 Original-Received: (at 9286) by debbugs.gnu.org; 10 Oct 2019 07:43:32 +0000 Original-Received: from localhost ([127.0.0.1]:55001 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iIT6h-0007Gn-VP for submit@debbugs.gnu.org; Thu, 10 Oct 2019 03:43:32 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:43229) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iIT6g-0007GW-6E; Thu, 10 Oct 2019 03:43:30 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:34511) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iIT6a-0006iO-F1; Thu, 10 Oct 2019 03:43:24 -0400 Original-Received: from [176.228.60.248] (port=4573 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1iIT6Y-0003Go-5b; Thu, 10 Oct 2019 03:43:23 -0400 In-reply-to: <87blupzh41.fsf@gnus.org> (message from Lars Ingebrigtsen on Thu, 10 Oct 2019 00:30:54 +0200) 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: 209.51.188.43 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" Xref: news.gmane.org gmane.emacs.bugs:168846 Archived-At: > From: Lars Ingebrigtsen > Date: Thu, 10 Oct 2019 00:30:54 +0200 > Cc: 34463@debbugs.gnu.org, jidanni@jidanni.org, Kenichi Handa , > 9286@debbugs.gnu.org > > > This is because line joining does not include a space if *either* > > character on each side of the newline has the ?| (line-breakable) > > category and an entry in fill-nospace-between-words-table. To get the > > behavior jidanni wants, we could change it so that *both* the characters > > must have this property; see attached patch. > > > > But I am not sure this is TRT in general. Handa-san, could you weigh in > > with an opinion? Adding a space seems more or less correct to me, but I > > am no expert. > > This problem is still present in Emacs 27. This patch, from 2011, was > never applied. I think Chong's proposal sounds logical, but like him, > I'm (ahem) no expert. Since Kenichi didn't respond, I think we should study what the Unicode Line-breaking Algorithm has to say about that. Can you look there for relevant guidance? We don't yet implement the complete algorithm, but some of what they say could nevertheless be used to resolve this issue. Thanks.