From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#9296: 24.0.50; next-line/prev-line on lines with images Date: Sun, 14 Aug 2011 19:52:32 +0300 Message-ID: <83wregue9b.fsf@gnu.org> References: <8739h5c9nq.fsf@gnus.org> <837h6gwjfs.fsf@gnu.org> <83zkjcutxv.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: lo.gmane.org X-Trace: dough.gmane.org 1313340818 24174 80.91.229.12 (14 Aug 2011 16:53:38 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Sun, 14 Aug 2011 16:53:38 +0000 (UTC) Cc: 9296-done@debbugs.gnu.org To: Lars Magne Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Aug 14 18:53:34 2011 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1QsdwL-0001UK-U7 for geb-bug-gnu-emacs@m.gmane.org; Sun, 14 Aug 2011 18:53:34 +0200 Original-Received: from localhost ([::1]:42248 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QsdwL-0006TI-E7 for geb-bug-gnu-emacs@m.gmane.org; Sun, 14 Aug 2011 12:53:33 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:52860) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QsdwH-0006Rh-Gm for bug-gnu-emacs@gnu.org; Sun, 14 Aug 2011 12:53:31 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QsdwD-0002Mh-UF for bug-gnu-emacs@gnu.org; Sun, 14 Aug 2011 12:53:29 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:50257) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QsdwD-0002MX-MV for bug-gnu-emacs@gnu.org; Sun, 14 Aug 2011 12:53:25 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1Qsdxm-0003tR-70 for bug-gnu-emacs@gnu.org; Sun, 14 Aug 2011 12:55:02 -0400 Resent-From: Eli Zaretskii Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-To: bug-gnu-emacs@gnu.org Resent-Date: Sun, 14 Aug 2011 16:55:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: cc-closed 9296 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Mail-Followup-To: 9296@debbugs.gnu.org, eliz@gnu.org Original-Received: via spool by 9296-done@debbugs.gnu.org id=D9296.131334086214912 (code D ref 9296); Sun, 14 Aug 2011 16:55:01 +0000 Original-Received: (at 9296-done) by debbugs.gnu.org; 14 Aug 2011 16:54:22 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Qsdx4-0003sO-R4 for submit@debbugs.gnu.org; Sun, 14 Aug 2011 12:54:22 -0400 Original-Received: from mtaout22.012.net.il ([80.179.55.172]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Qsdwx-0003sC-To for 9296-done@debbugs.gnu.org; Sun, 14 Aug 2011 12:54:16 -0400 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0LPX00C00G4W9Z00@a-mtaout22.012.net.il> for 9296-done@debbugs.gnu.org; Sun, 14 Aug 2011 19:52:33 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([77.124.97.107]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0LPX007SLG7KZ951@a-mtaout22.012.net.il>; Sun, 14 Aug 2011 19:52:33 +0300 (IDT) In-reply-to: X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Sun, 14 Aug 2011 12:55:02 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 1) X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:50066 Archived-At: > From: Lars Magne Ingebrigtsen > Cc: 9296@debbugs.gnu.org > Date: Sun, 14 Aug 2011 16:16:02 +0200 > MailScanner-NULL-Check: 1313936207.48825@iYqLddN/OGrzFGkFNPyD2A > > (url-retrieve > "http://quimby.gnus.org/circus/jukebox.php?image=thumbnail.png&group=Various&album=Bossa%20Nova%20and%20the%20Rise%20of%20Brazilian%20Music%20in%20the%201960s%20%281%29" > (lambda (status) > (goto-char (point-min)) > (search-forward "\n\n") > (let ((data (buffer-substring (point) (point-max)))) > (pop-to-buffer "*image*") > (setq truncate-lines t) > (let ((image (create-image data 'png t))) > (dotimes (i 50) > (insert-image image) > (insert " Bossa Nova and the Rise of Brazilian Music in the 1960s (1) -> Various/Bossa Nova and the Rise of Brazilian Music in the 1960s (1)\n")))))) Thanks for the test case. This problem exists in Emacs 23 as well, so it's not new. I suggest to file a separate bug for it. For now, being not worse than Emacs 23.3 is good enough for me. In general, the DWIM-ish operation of next/previous-line, especially its ideas of what exactly is the goal column, is darn hard to get right, and it certainly has its surprises. If you look at the convoluted code in move_it_in_display_line_to, you will understand why.