From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Jambunathan K Newsgroups: gmane.emacs.bugs Subject: bug#15312: Info (point-entered, point-left): Doc incomplete, hence incorrect Date: Tue, 10 Sep 2013 09:03:56 +0530 Message-ID: <878uz573kr.fsf@gmail.com> References: <87ppsiw22k.fsf@gmail.com> <83sixej6iz.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1378783939 16371 80.91.229.3 (10 Sep 2013 03:32:19 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 10 Sep 2013 03:32:19 +0000 (UTC) Cc: 15312@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Sep 10 05:32:17 2013 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 1VJEga-0002QX-QM for geb-bug-gnu-emacs@m.gmane.org; Tue, 10 Sep 2013 05:32:17 +0200 Original-Received: from localhost ([::1]:54562 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VJEga-0003m1-Bp for geb-bug-gnu-emacs@m.gmane.org; Mon, 09 Sep 2013 23:32:16 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:50420) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VJEgR-0003le-TS for bug-gnu-emacs@gnu.org; Mon, 09 Sep 2013 23:32:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VJEgM-0001Hj-Dh for bug-gnu-emacs@gnu.org; Mon, 09 Sep 2013 23:32:07 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:42925) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VJEgM-0001Hf-9r for bug-gnu-emacs@gnu.org; Mon, 09 Sep 2013 23:32:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1VJEgL-0001KM-RN for bug-gnu-emacs@gnu.org; Mon, 09 Sep 2013 23:32:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Jambunathan K Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 10 Sep 2013 03:32:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15312 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 15312-submit@debbugs.gnu.org id=B15312.13787839065078 (code B ref 15312); Tue, 10 Sep 2013 03:32:01 +0000 Original-Received: (at 15312) by debbugs.gnu.org; 10 Sep 2013 03:31:46 +0000 Original-Received: from localhost ([127.0.0.1]:51218 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VJEg6-0001Jq-6z for submit@debbugs.gnu.org; Mon, 09 Sep 2013 23:31:46 -0400 Original-Received: from mail-pb0-f52.google.com ([209.85.160.52]:42154) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VJEg3-0001Jb-Sn for 15312@debbugs.gnu.org; Mon, 09 Sep 2013 23:31:44 -0400 Original-Received: by mail-pb0-f52.google.com with SMTP id wz12so6926882pbc.25 for <15312@debbugs.gnu.org>; Mon, 09 Sep 2013 20:31:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version:content-type; bh=lFF/7+Gv9mbXBYoX+yeA9vAksPrlxnKcuKWDAVZErb0=; b=Drep2ofReGcv6JGI74gYcRKEtpIw4nbuOJtvHIUejDqmiEqng7ZS9bvJ3C3Gi7XAC/ oD3LCqf1e4hDxDkJxd5b+dOBXV6ckOChKqW4bCvnywfj9RrhbWc1HcSMV6JmcIwrWoJ3 x2AiFszflQ6VlVzIeZy0BLnWHrW6VNzmKwDaY8GSMjmbs0GoSC9nGSWLYhhZsVh4403s d0MKbFYxXUBex1Mbe+icxP3794lEr0F92G+RAlkRo5cJa/C/PxUMHPeCAsEq8rEaMA58 UuXyN4perH+2Hgs2LfazCFlZzXNYFFTwg5lidgI0BTqm6tBzQFxPX83kaAINeHyrfzMz A1GQ== X-Received: by 10.66.218.198 with SMTP id pi6mr23926608pac.107.1378783898029; Mon, 09 Sep 2013 20:31:38 -0700 (PDT) Original-Received: from porunai ([115.242.233.53]) by mx.google.com with ESMTPSA id sz3sm19745817pbc.5.1969.12.31.16.00.00 (version=TLSv1.1 cipher=RC4-SHA bits=128/128); Mon, 09 Sep 2013 20:31:37 -0700 (PDT) In-Reply-To: <83sixej6iz.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 09 Sep 2013 19:37:08 +0300") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) 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:78162 Archived-At: Eli Zaretskii writes: >> From: Jambunathan K >> Date: Mon, 09 Sep 2013 19:04:59 +0530 >> >> >> The info doc (see below) makes no mention of intervals/text properties. >> It should mention what intervals.c actually does. > > What exactly does it not mention now, About text properties. They need to be different. > and under which circumstances will a Lisp programmer see that? Does this question mean when will point-entered and point-left hook be used (or used at all)? I suggest that you look at table.el, gomoku.el, landmark.el et.al. ---------------------------------------------------------------- Copy the snippet below to *scratch* buffer and eval them. (I assume that your *scratch* buffer is in emacs-lisp-mode and is colorful) Keep C-f-ing and C-b-ing and see what happens. You will see that entered and left get triggered when you move from a text that has one face to another, NOT when they have the same faces. (defun --point-entered (&rest args) (message "entered: %s" args)) (defun --point-left (&rest args) (message "left: %s" args)) (add-text-properties (point-min) (point-max) '(point-left --point-left point-entered --point-entered)) ---------------------------------------------------------------- Doc (makes) an (incomplete and) incorrect claim that the triggering of hook depends SOLELY on the value of point-left and point-entered properties. It is NOT so. The values of TEXT PROPERTIES should be DIFFERENT at the transition point.