From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Phillip Susi Newsgroups: gmane.emacs.bugs Subject: bug#70000: 29.2; Grapheme handling incorrect Date: Thu, 28 Mar 2024 12:16:33 -0400 Message-ID: <87bk6y8h7i.fsf@vps.thesusis.net> References: <878r26duar.fsf@vps.thesusis.net> <86cyrije9v.fsf@gnu.org> <875xx7epd9.fsf@vps.thesusis.net> <865xx7iogc.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="15844"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 70000@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Mar 28 17:17:42 2024 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 1rpsRi-0003uA-K4 for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 28 Mar 2024 17:17:42 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rpsRH-00063C-AI; Thu, 28 Mar 2024 12:17:15 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rpsR4-00061i-Gi for bug-gnu-emacs@gnu.org; Thu, 28 Mar 2024 12:17:11 -0400 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rpsR3-0006vb-C7 for bug-gnu-emacs@gnu.org; Thu, 28 Mar 2024 12:17:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1rpsR3-0005sB-P2 for bug-gnu-emacs@gnu.org; Thu, 28 Mar 2024 12:17:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Phillip Susi Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 28 Mar 2024 16:17:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 70000 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: notabug Original-Received: via spool by 70000-submit@debbugs.gnu.org id=B70000.171164260422542 (code B ref 70000); Thu, 28 Mar 2024 16:17:01 +0000 Original-Received: (at 70000) by debbugs.gnu.org; 28 Mar 2024 16:16:44 +0000 Original-Received: from localhost ([127.0.0.1]:40994 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1rpsQl-0005rW-Tf for submit@debbugs.gnu.org; Thu, 28 Mar 2024 12:16:44 -0400 Original-Received: from vps.thesusis.net ([34.202.238.73]:41372) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1rpsQj-0005rH-N1 for 70000@debbugs.gnu.org; Thu, 28 Mar 2024 12:16:42 -0400 Original-Received: by vps.thesusis.net (Postfix, from userid 1000) id A1E0D2BF05; Thu, 28 Mar 2024 12:16:33 -0400 (EDT) In-Reply-To: <865xx7iogc.fsf@gnu.org> 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:282238 Archived-At: Eli Zaretskii writes: > I understand. But Emacs needs this information also long after the > characters were already drawn. For example, imagine that Emacs Yes, it would have to learn the width the first time it displays each grapheme and build a list of known widths to remember for future use. > In addition, if Emacs had to query the cursor position after each > written character, its redisplay would be much slower than it is now. It would only need to query when printing a grapheme cluster, and only the first time. After that, it could remeber.