From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#56682: locked narrowing Date: Wed, 17 Aug 2022 10:11:28 -0400 Message-ID: References: <83r11hh4pm.fsf@gnu.org> <3a1232a17b09ce88af40@heytings.org> <83edxghqg2.fsf@gnu.org> <325f95fd2bcc0b666b0b@heytings.org> <83edxgfi75.fsf@gnu.org> <5e3c3081-f098-8140-c767-b895c32bf30b@yandex.ru> <835yisffil.fsf@gnu.org> <831qtgff78.fsf@gnu.org> <83zgg4dw4y.fsf@gnu.org> <83r11gdrr4.fsf@gnu.org> <83edxfds7s.fsf@gnu.org> <83r11fc80o.fsf@gnu.org> <83o7wjc6o2.fsf@gnu.org> Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="30799"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 56682@debbugs.gnu.org, gregory@heytings.org, dgutov@yandex.ru To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Aug 17 16:12:15 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 1oOJmI-0007na-97 for geb-bug-gnu-emacs@m.gmane-mx.org; 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Wed, 17 Aug 2022 14:12:02 +0000 Original-Received: (at 56682) by debbugs.gnu.org; 17 Aug 2022 14:11:46 +0000 Original-Received: from localhost ([127.0.0.1]:52743 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oOJlp-0003i6-Lp for submit@debbugs.gnu.org; Wed, 17 Aug 2022 10:11:45 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:41955) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oOJlk-0003hq-B7 for 56682@debbugs.gnu.org; Wed, 17 Aug 2022 10:11:44 -0400 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id EA2DF100138; Wed, 17 Aug 2022 10:11:34 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 69D0E100091; Wed, 17 Aug 2022 10:11:29 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1660745489; bh=c7gy0Vh9QXz7OmLoIa0k3ydjzhkzpqw6ayGkmGAr9i4=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=H4A67rUR2ylcxX2knCT9FUsui3qp5r3yYRtCS2+w/tqAz8TSYTeNwApFs69hKVOBT ivWkxhaAOQNit0Dti+uliYUmLUQdVmk99Uh8IIwX0+vZGmoBnPyGIPCnOKPVaVcY/5 BEsWjDvywQj/Erw7ZKfqx+zykSJ9hKqA4NH0ZHSzVyAD00u/GeW9s7sdL9t3uMlod8 B8hpocRtWbWtpqPpjIKgcj6iH7GH+Ag+CaVMX/gG8RVkVu0h+HpELM/zrAMbO/bX54 Kuf9CVdMS3Zecv60mWhvh8Z1VDcBmQiWJr7+FQ5pz73Me9GQESDg4Bd4gLtgNSrrI+ h/tAVnFt5BWHw== Original-Received: from pastel (unknown [45.72.195.111]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 3E8B01202E7; Wed, 17 Aug 2022 10:11:29 -0400 (EDT) In-Reply-To: <83o7wjc6o2.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 17 Aug 2022 16:59:25 +0300") 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:240084 Archived-At: >> Last time I looked at it, I couldn't quite understand how the cache >> works there, so I wasn't sure how to make sure it returns valid >> information even if called outside of redisplay. > Looking at what maybe_produce_line_number does doesn't help? I see two problems: - The problem I already mentioned: the cache seems to be maintained/flushed by the redisplay code, so when the function is called outside of redisplay I don't know if `w->base_line_number/pos` is still valid. - The fact that this uses line numbers counted from BEGV whereas nlinum counts from BEG. Stefan