From unknown Sat Aug 09 12:59:30 2025 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) Content-Type: text/plain; charset=utf-8 From: bug#28854 <28854@debbugs.gnu.org> To: bug#28854 <28854@debbugs.gnu.org> Subject: Status: line-number-display-width erroneously returns 0 when ... Reply-To: bug#28854 <28854@debbugs.gnu.org> Date: Sat, 09 Aug 2025 19:59:30 +0000 retitle 28854 line-number-display-width erroneously returns 0 when ... reassign 28854 emacs submitter 28854 Keith David Bershatsky severity 28854 normal thanks From debbugs-submit-bounces@debbugs.gnu.org Sun Oct 15 19:31:34 2017 Received: (at submit) by debbugs.gnu.org; 15 Oct 2017 23:31:34 +0000 Received: from localhost ([127.0.0.1]:42082 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e3sNZ-00071R-4w for submit@debbugs.gnu.org; Sun, 15 Oct 2017 19:31:33 -0400 Received: from eggs.gnu.org ([208.118.235.92]:46580) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e3sNX-00071E-Oi for submit@debbugs.gnu.org; Sun, 15 Oct 2017 19:31:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e3sNR-0004bM-JM for submit@debbugs.gnu.org; Sun, 15 Oct 2017 19:31:26 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: * X-Spam-Status: No, score=1.3 required=5.0 tests=BAYES_50,RCVD_IN_SORBS_SPAM, T_DKIM_INVALID autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:46055) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e3sNR-0004b6-FW for submit@debbugs.gnu.org; Sun, 15 Oct 2017 19:31:25 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37549) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e3sNQ-0000TQ-Dq for bug-gnu-emacs@gnu.org; Sun, 15 Oct 2017 19:31:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e3sNN-0004XJ-9r for bug-gnu-emacs@gnu.org; Sun, 15 Oct 2017 19:31:24 -0400 Received: from gateway20.websitewelcome.com ([192.185.45.27]:15830) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e3sNN-0004Gq-1o for bug-gnu-emacs@gnu.org; Sun, 15 Oct 2017 19:31:21 -0400 Received: from cm17.websitewelcome.com (cm17.websitewelcome.com [100.42.49.20]) by gateway20.websitewelcome.com (Postfix) with ESMTP id A7C7C400C3945 for ; Sun, 15 Oct 2017 18:31:04 -0500 (CDT) Received: from gator3053.hostgator.com ([50.87.144.69]) by cmsmtp with SMTP id 3sN6eIAC7c72g3sN6eykwZ; Sun, 15 Oct 2017 18:31:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lawlist.com ; s=default; h=Content-Type:MIME-Version:Subject:To:From:Message-ID:Date: Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=Lu7Vay7Frus6phvbsy/bcheik1R51/JNRDd1nFQHC1M=; b=DAaUb06abhREz2zW63ZKCj60rI fNSxKd9uqvajIh183XnXEIaG22pVAiVcT5dQPdcQIPxvldS0jdeXlYQ4KH0dOPgCyO8vf5VciKAgM OUzxfzgsXQrj9GikWdTIYpmq3rGmefV8D/4We9igHStYZdvDhQHEP+TVPD3CtY1LEOz1xrbtTkJe3 yh7PNu/UHhpSJDE4e+DEgftL46D0gk2VVjH7EOuljlKm8AsTvv7CuahKAcj1FSBcdxV/a256OzHaF SGCrjKiAeZyDJRtg9MzpYbeDzpp9UH9Nw/cEg62BpOR7yFavm3YstajwYSoeKWi85ijvK7gnjgRUt nXp0ouag==; Received: from cpe-45-48-239-195.socal.res.rr.com ([45.48.239.195]:53189 helo=server.private) by gator3053.hostgator.com with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.87) (envelope-from ) id 1e3sN5-002erg-RT for bug-gnu-emacs@gnu.org; Sun, 15 Oct 2017 18:31:03 -0500 Date: Sun, 15 Oct 2017 16:31:03 -0700 Message-ID: From: Keith David Bershatsky To: Emacs Bug Reports Subject: line-number-display-width erroneously returns 0 when ... MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator3053.hostgator.com X-AntiAbuse: Original Domain - gnu.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - lawlist.com X-BWhitelist: no X-Source-IP: 45.48.239.195 X-Exim-ID: 1e3sN5-002erg-RT X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: cpe-45-48-239-195.socal.res.rr.com (server.private) [45.48.239.195]:53189 X-Source-Auth: lawlist X-Email-Count: 1 X-Source-Cap: bGF3bGlzdDtsYXdsaXN0O2dhdG9yMzA1My5ob3N0Z2F0b3IuY29t X-Local-Domain: yes X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.5 (----) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -4.5 (----) line-number-display-width erroneously returns 0 when at the end of a very long line and `truncate-lines` is non-nil. STEP #1: Launch a current version of the master branch without any user configuration; i.e., emacs -q. STEP #2: (setq truncate-lines t) STEP #3: (display-line-numbers-mode 1) STEP #4: Create a long line that is about 3 times the width of the window. With point at the end of that line, evaluate: (line-number-display-width 'pixelwise) The result returned is 0, which is incorrect. BACKGROUND: I am working on developing crosshairs as part of feature requests #17684 and #22873, and I need the line number display width (pixelwise) to accurately calculate when the horizontal ruler should begin to draw -- i.e., it.current_x + lnum_pixel_width = start drawing ... I am also enabling compatibility with the fnctions scroll-right and scroll-left, and when horizontal scrolling the current line. Thanks, Keith From debbugs-submit-bounces@debbugs.gnu.org Mon Oct 16 11:54:14 2017 Received: (at 28854-done) by debbugs.gnu.org; 16 Oct 2017 15:54:14 +0000 Received: from localhost ([127.0.0.1]:44053 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e47iY-0002df-G4 for submit@debbugs.gnu.org; Mon, 16 Oct 2017 11:54:14 -0400 Received: from eggs.gnu.org ([208.118.235.92]:60887) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e47iW-0002dP-BC for 28854-done@debbugs.gnu.org; Mon, 16 Oct 2017 11:54:12 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e47iM-0002oe-Dw for 28854-done@debbugs.gnu.org; Mon, 16 Oct 2017 11:54:07 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-0.0 required=5.0 tests=BAYES_20,RP_MATCHES_RCVD autolearn=disabled version=3.3.2 Received: from fencepost.gnu.org ([2001:4830:134:3::e]:56678) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e47iM-0002oZ-9l; Mon, 16 Oct 2017 11:54:02 -0400 Received: from [176.228.60.248] (port=1990 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1e47iL-0003iQ-Kd; Mon, 16 Oct 2017 11:54:02 -0400 Date: Mon, 16 Oct 2017 18:53:44 +0300 Message-Id: <83r2u3f5rr.fsf@gnu.org> From: Eli Zaretskii To: Keith David Bershatsky In-reply-to: (message from Keith David Bershatsky on Sun, 15 Oct 2017 16:31:03 -0700) Subject: Re: bug#28854: line-number-display-width erroneously returns 0 when ... References: X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-Spam-Score: -5.0 (-----) X-Debbugs-Envelope-To: 28854-done Cc: 28854-done@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Eli Zaretskii Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -5.0 (-----) > Date: Sun, 15 Oct 2017 16:31:03 -0700 > From: Keith David Bershatsky > > line-number-display-width erroneously returns 0 when at the end of a very long line and `truncate-lines` is non-nil. More accurately, when the first line visible in the window is completely hscrolled out of view. > STEP #1: Launch a current version of the master branch without any user configuration; i.e., emacs -q. > > STEP #2: (setq truncate-lines t) > > STEP #3: (display-line-numbers-mode 1) > > STEP #4: Create a long line that is about 3 times the width of the window. With point at the end of that line, evaluate: > > (line-number-display-width 'pixelwise) > > The result returned is 0, which is incorrect. Thanks, fixed on the release branch. From unknown Sat Aug 09 12:59:30 2025 Received: (at fakecontrol) by fakecontrolmessage; To: internal_control@debbugs.gnu.org From: Debbugs Internal Request Subject: Internal Control Message-Id: bug archived. Date: Tue, 14 Nov 2017 12:24:05 +0000 User-Agent: Fakemail v42.6.9 # This is a fake control message. # # The action: # bug archived. thanks # This fakemail brought to you by your local debbugs # administrator