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23.0.50; (pos-visible-in-window-p) returns error with 'before-string ove
From: |
Yoshiaki Kasahara |
Subject: |
23.0.50; (pos-visible-in-window-p) returns error with 'before-string overlay |
Date: |
Wed, 02 Apr 2008 02:17:17 +0900 (JST) |
Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.
Your bug report will be posted to the address@hidden mailing list.
Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:
When there is an overlay with 'before-string property at the beginning
of a line in a buffer, the point in the buffer is on the overlay, and
both the overlay and the point are placed at the bottom of the window,
(pos-visible-in-window-p) returns 'Args out of range: 0'.
To reproduce, insert some blank lines to *scratch* buffer, and eval
the following:
(overlay-put (make-overlay (point-max) (point-max)) 'before-string
"[before-string]")
Then place the overlay and the point at the bottom of the window like
this, and eval (pos-visible-in-window-p):
--------------
[before-string]<- point is here
-EEJ:**--.... <- modeline
Eval: (pos-visible-in-window-p)
--------------
Currently I'm using emacs before-merge-unicode-to-trunk. I reproduced
the same symptom in CVS HEAD (23.0.60) of today. It doesn't happen in
emacs-21.3 (it returns t).
In some cases the emacs process starts to consume 100% CPU and doesn't
respond to keyboard-quit after the error. I have to kill the process.
But I cannot reliably reproduce the lock-up. Nexttime I'll try to
attach GDB to get a backtrace.
If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
`bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/usr/local/share/emacs/23.0.50/etc/DEBUG for instructions.
In GNU Emacs 23.0.50.2 (x86_64-unknown-freebsd7.0, X toolkit, Xaw3d scroll bars)
of 2008-03-04 on elvenbow.cc.kyushu-u.ac.jp
configured using `configure '--with-x-toolkit=lucid' '--without-xim'
'--without-gtk''
Important settings:
value of $LC_ALL: nil
value of $LC_COLLATE: nil
value of $LC_CTYPE: ja_JP.eucJP
value of $LC_MESSAGES: nil
value of $LC_MONETARY: nil
value of $LC_NUMERIC: nil
value of $LC_TIME: C
value of $LANG: ja_JP.eucJP
locale-coding-system: japanese-iso-8bit
default-enable-multibyte-characters: t
Major mode: Apropos
Minor modes in effect:
show-paren-mode: t
iswitchb-mode: t
icomplete-mode: t
display-time-mode: t
shell-dirtrack-mode: t
mouse-wheel-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
unify-8859-on-encoding-mode: t
utf-translate-cjk-mode: t
auto-compression-mode: t
column-number-mode: t
line-number-mode: t
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