From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.devel Subject: [jbw@macs.hw.ac.uk: redisplay goes horribly wrong when a before-string contains multiple display properties] Date: Wed, 19 Sep 2007 11:48:52 -0400 Message-ID: Reply-To: rms@gnu.org NNTP-Posting-Host: lo.gmane.org Content-Type: text/plain; charset=ISO-8859-15 X-Trace: sea.gmane.org 1190217147 12990 80.91.229.12 (19 Sep 2007 15:52:27 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 19 Sep 2007 15:52:27 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Sep 19 17:52:17 2007 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1IY1qX-0008Jc-5W for ged-emacs-devel@m.gmane.org; Wed, 19 Sep 2007 17:52:13 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IY1qV-0007RU-Nz for ged-emacs-devel@m.gmane.org; Wed, 19 Sep 2007 11:52:11 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1IY1nt-00067l-NK for emacs-devel@gnu.org; Wed, 19 Sep 2007 11:49:29 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1IY1ns-00066H-97 for emacs-devel@gnu.org; Wed, 19 Sep 2007 11:49:28 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IY1nr-00065s-CT for emacs-devel@gnu.org; Wed, 19 Sep 2007 11:49:27 -0400 Original-Received: from fencepost.gnu.org ([140.186.70.10]) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1IY1nr-0005vw-2z for emacs-devel@gnu.org; Wed, 19 Sep 2007 11:49:27 -0400 Original-Received: from rms by fencepost.gnu.org with local (Exim 4.60) (envelope-from ) id 1IY1nI-0001p3-GV; Wed, 19 Sep 2007 11:48:52 -0400 X-Detected-Kernel: Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:79319 Archived-At: Would someone please fix this and ack? ------- Start of forwarded message ------- X-Spam-Status: No, score=0.0 required=5.0 tests=UNPARSEABLE_RELAY autolearn=failed version=3.1.0 To: bug-gnu-emacs@gnu.org From: Joe Wells Date: Tue, 18 Sep 2007 23:20:07 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Subject: redisplay goes horribly wrong when a before-string contains multiple display properties Redisplay goes horribly wrong when a before-string contains multiple display properties. Reproduce by evaluating this expression: (let ((buf (get-buffer-create "foo"))) (with-current-buffer buf (display-buffer buf) (erase-buffer) (dolist (o (overlays-in (point-min) (point-max))) (delete-overlay o)) (insert "ABC") (let ((o (make-overlay 2 3)) (s (make-string 5 ?X))) (put-text-property 0 1 'display "1" s) (put-text-property 1 2 'display "2" s) (put-text-property 2 3 'display "3" s) (put-text-property 3 4 'display "4" s) (put-text-property 4 5 'display "5" s) (overlay-put o 'display "Y") (overlay-put o 'before-string s)))) The correct behavior would be to see the buffer ?foo? pop up displaying the characters ?A12345YC?. The horribly wrong behavior that actually happens is that redisplay of the buffer stops completely after ?A1? is shown. Strangely, the ?XXXXX? (which should not be displayed anywhere) will be displayed in the echo area. Scary errors start occurring if one tries to do work in the buffer after this. By the way, it would be really nice if this worked, because it would be an easy way to display a number of display specifications for a single overlay, which would make it much easier to get the features of AUCTeX's tex-fold.el to work together with the features of latex-preview. (What is needed is being able to display strings interleaved with images.) Joe ====================================================================== In GNU Emacs 22.1.1 (i686-pc-linux-gnu, GTK+ Version 2.8.20) of 2007-06-27 on artemis Windowing system distributor `The X.Org Foundation', version 11.0.70000000 configured using `configure '--prefix=/home/jbw/local2' '--enable-debug' '--disable-nls' '--with-x-toolkit=gtk' 'CFLAGS=-O0 -g3 -ggdb'' Important settings: value of $LC_ALL: nil value of $LC_COLLATE: nil value of $LC_CTYPE: en_US.UTF-8 value of $LC_MESSAGES: nil value of $LC_MONETARY: nil value of $LC_NUMERIC: nil value of $LC_TIME: jbw value of $LANG: nil locale-coding-system: utf-8 default-enable-multibyte-characters: t Major mode: Lisp Interaction Minor modes in effect: TeX-source-specials-mode: t auto-fill-function: do-auto-fill shell-dirtrack-mode: t outline-minor-mode: t desktop-save-mode: t url-handler-mode: t tooltip-mode: t mouse-wheel-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t unify-8859-on-encoding-mode: t utf-translate-cjk-mode: t auto-compression-mode: t temp-buffer-resize-mode: t size-indication-mode: t line-number-mode: t transient-mark-mode: t ------- End of forwarded message -------