bug#1458: marked as done (23.0.60; mouse-posn-property: Args out of range)

[don@donarmstrong.com (Emacs bug Tracking System)]

[-- Attachment #1: Type: text/plain, Size: 856 bytes --]


Your message dated Sun, 30 Nov 2008 12:36:36 -0500
with message-id <87k5alru8r.fsf@cyd.mit.edu>
and subject line Re: 23.0.60; mouse-posn-property: Args out of range
has caused the Emacs bug report #1458,
regarding 23.0.60; mouse-posn-property: Args out of range
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact don@donarmstrong.com
immediately.)


-- 
1458: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=1458
Emacs Bug Tracking System
Contact don@donarmstrong.com with problems

[-- Attachment #2: Type: message/rfc822, Size: 4621 bytes --]

From: Stephen Berman <stephen.berman@gmx.net>
To: emacs-pretest-bug@gnu.org
Subject: 23.0.60; mouse-posn-property: Args out of range
Date: Sat, 29 Nov 2008 21:31:10 +0100
Message-ID: <874p1qgtpt.fsf@escher.local.home>

1. emacs -Q

2. Eval this:

   (defun testme ()
     (save-selected-window
       (switch-to-buffer "testme")))

If `testme' is not a fresh buffer, see observation (a) below.

3. Eval (run-at-time 3 nil 'testme) and wait 3 seconds.

4. When the `testme' buffer appears, move the mouse cursor over the mode line;
as soon as it hits a position that has a help-echo property containing the
string "mouse-2", the following error is raised:

   mouse-posn-property: Args out of range: 719

The out of range number is (point) in step 3.

Backtrace:

Debugger entered--Lisp error: (args-out-of-range 719)
  get-char-property(719 follow-link #<window 220 on testme>)
  mouse-posn-property((#<window 220 on testme> mode-line (467 . 644) 0 (#("-%-" 0 3 ...) . 2) 719 (58 . 46) nil (2 . 4) (8 . 16)) follow-link)
  (or (mouse-posn-property pos (quote follow-link)) (key-binding [follow-link] nil t pos))
  (and (or (not ...) mouse-1-click-in-non-selected-windows (eq ... ...)) (or (mouse-posn-property pos ...) (key-binding [follow-link] nil t pos)))
  (let ((action ...)) (cond (... ...) (... ...) (t action)))
  mouse-on-link-p((#<window 220 on testme> mode-line (467 . 644) 0 (#("-%-" 0 3 ...) . 2) 719 (58 . 46) nil (2 . 4) (8 . 16)))
  mouse-fixup-help-message("mouse-1: Select (drag to resize)\nmouse-2: Make current window occupy the whole frame\nmouse-3: Remove current window from display")


Observations:

a. The error only occurs when (point) of the the buffer that is current when
   step 3 is carried out, is greater than (point-max) of the buffer `testme'.
b. The error only occurs when testme is called from a timer.
c. The error only occurs when the function called from the timer
   contains a call to save-selected-window.
d. The error only occurs with propertized text satisfying mouse-on-link-p in
   either the mode line or the header line, i.e., suitably propertized
   text inserted into the editing area of the buffer does not induce the
   error.


In GNU Emacs 23.0.60.17 (i686-pc-linux-gnu, GTK+ Version 2.12.9)
 of 2008-11-29 on escher
Windowing system distributor `The X.Org Foundation', version 11.0.10400090
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=local
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t



[-- Attachment #3: Type: message/rfc822, Size: 1439 bytes --]

From: Chong Yidong <cyd@stupidchicken.com>
To: Stephen Berman <stephen.berman@gmx.net>
Cc: 1458-done@emacsbugs.donarmstrong.com
Subject: Re: 23.0.60; mouse-posn-property: Args out of range
Date: Sun, 30 Nov 2008 12:36:36 -0500
Message-ID: <87k5alru8r.fsf@cyd.mit.edu>

> 1. emacs -Q
>
> 2. Eval this:
>
>    (defun testme ()
>      (save-selected-window
>        (switch-to-buffer "testme")))
>
> 3. Eval (run-at-time 3 nil 'testme) and wait 3 seconds.
>
> 4. When the `testme' buffer appears, move the mouse cursor over the
> mode line; as soon as it hits a position that has a help-echo property
> containing the string "mouse-2", the following error is raised:
>
>    mouse-posn-property: Args out of range: 719

I've checked in a fix.  Thanks.