From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Bastien Newsgroups: gmane.emacs.devel Subject: Re: line-start? Date: Fri, 07 Feb 2020 11:48:02 +0100 Organization: GNU Message-ID: <878sle7jx9.fsf@gnu.org> References: <87ftfof1xl.fsf@gnu.org> <877e0zrhud.fsf@gnu.org> <83o8ubfu9l.fsf@gnu.org> <87v9oiucdn.fsf@bzg.fr> <838sleg3d6.fsf@gnu.org> <87lfpe7lmk.fsf@bzg.fr> <83zhduelui.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="64332"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Feb 07 11:49:04 2020 Return-path: Envelope-to: ged-emacs-devel@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 1j01C3-000GZW-Gl for ged-emacs-devel@m.gmane-mx.org; Fri, 07 Feb 2020 11:49:03 +0100 Original-Received: from localhost ([::1]:53818 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j01C2-0004xI-F7 for ged-emacs-devel@m.gmane-mx.org; Fri, 07 Feb 2020 05:49:02 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53657) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j01BE-0004Ou-B1 for emacs-devel@gnu.org; Fri, 07 Feb 2020 05:48:13 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:40657) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1j01BE-0000Uh-77 for emacs-devel@gnu.org; Fri, 07 Feb 2020 05:48:12 -0500 Original-Received: from [185.24.184.132] (port=57111 helo=guerry) by fencepost.gnu.org with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.82) (envelope-from ) id 1j01B6-0001KI-Nu; Fri, 07 Feb 2020 05:48:10 -0500 Original-Received: by guerry (Postfix, from userid 1000) id 12FC41A6030E; Fri, 7 Feb 2020 11:48:02 +0100 (CET) In-Reply-To: <83zhduelui.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 07 Feb 2020 12:24:37 +0200") X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:244892 Archived-At: Eli Zaretskii writes: > Then (nth 1) of what posn-at-x-y returns is not what you want. You > should use the (car (nth 6)) instead. FWIW I just tried this: (car (nth 6 (posn-at-x-y 0 (+ (cdr (posn-x-y (posn-at-point pos window))) (- (nth 1 (window-edges nil t nil t)) (nth 1 (window-edges nil nil nil t))))))) but it always returns 0. The version with (nth 1 ...) works fine, though. >> The use case was this one: given a line, display the content of this >> line in the header line. When horizontally scrolled, the header has >> to display a substring of the line under the cursor, something like >> (substring (current-line-string) offset-in-columns). > > But using the buffer position, you could use buffer-substring instead, > right? Yes, sure, but I still need to know the window line start to get the offset. -- Bastien