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#16497: 24.3.50; `move-to-column' ignores invisible text at the beginning of the line, which create problems when using string-rectangle Date: Mon, 20 Jan 2014 17:38:41 +0200 Message-ID: <83eh42iry6.fsf@gnu.org> References: <87ob38gcp1.fsf@bzg.ath.cx> <83vbxfj3qo.fsf@gnu.org> <87sisj2ekl.fsf@bzg.ath.cx> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1390232354 21611 80.91.229.3 (20 Jan 2014 15:39:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 20 Jan 2014 15:39:14 +0000 (UTC) Cc: 16497@debbugs.gnu.org To: Bastien Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Jan 20 16:39:20 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1W5GwY-0004Bc-RG for geb-bug-gnu-emacs@m.gmane.org; Mon, 20 Jan 2014 16:39:18 +0100 Original-Received: from localhost ([::1]:53134 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W5GwY-0003lY-Dg for geb-bug-gnu-emacs@m.gmane.org; Mon, 20 Jan 2014 10:39:18 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45375) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W5GwP-0003jc-O1 for bug-gnu-emacs@gnu.org; Mon, 20 Jan 2014 10:39:15 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1W5GwK-0007Pk-EF for bug-gnu-emacs@gnu.org; Mon, 20 Jan 2014 10:39:09 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:44447) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W5GwK-0007Pg-Ai for bug-gnu-emacs@gnu.org; Mon, 20 Jan 2014 10:39:04 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1W5GwJ-0004zp-QB for bug-gnu-emacs@gnu.org; Mon, 20 Jan 2014 10:39:04 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 20 Jan 2014 15:39:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 16497 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 16497-submit@debbugs.gnu.org id=B16497.139023232019165 (code B ref 16497); Mon, 20 Jan 2014 15:39:03 +0000 Original-Received: (at 16497) by debbugs.gnu.org; 20 Jan 2014 15:38:40 +0000 Original-Received: from localhost ([127.0.0.1]:58466 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1W5Gvu-0004z3-R5 for submit@debbugs.gnu.org; Mon, 20 Jan 2014 10:38:39 -0500 Original-Received: from mtaout22.012.net.il ([80.179.55.172]:62763) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1W5Gvq-0004yo-RO for 16497@debbugs.gnu.org; Mon, 20 Jan 2014 10:38:35 -0500 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0MZP00800I2VI700@a-mtaout22.012.net.il> for 16497@debbugs.gnu.org; Mon, 20 Jan 2014 17:38:33 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MZP0075VI48TEC0@a-mtaout22.012.net.il>; Mon, 20 Jan 2014 17:38:33 +0200 (IST) In-reply-to: <87sisj2ekl.fsf@bzg.ath.cx> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x 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:83776 Archived-At: > From: Bastien > Cc: 16497@debbugs.gnu.org > Date: Mon, 20 Jan 2014 10:22:02 +0100 > > emacs -Q > M-: (insert "abc") RET > C-a > M-: (put-text-property (point) (1+ (point)) 'invisible t) RET > M-: (move-to-column 0) > > The point is between the invisible character and "b", which > feels wrong even in terms of interactively inserting text. Thanks. move-to-column is a screen-moving command, and it has been skipping invisible text for the past 18 years. It also accounts for various other display-only features and artifacts. (It is a pity that this is not documented; I think it's a documentation bug.) So now I'm wondering why you thought you should be using this function, if what you need is (AFAIU) to get to the Nth character starting from the beginning of a line. E.g., move-to-column also accounts for double-width characters (it counts them as 2 columns), and also for how composed characters are displayed (it could count N composed characters as M ~= N columns). It also accounts for characters displayed via display tables. Are you sure you want all this in the job you need to do with the rectangle? Or maybe you just want line-move-to-column.