Re: 23.0.50; Display bug with vline.el and viper

["Lennart Borgman (gmail)" <lennart.borgman@gmail.com>]

There was some messages about this bug, but no solution. The bug is 
still there. AFAICS it is somewhere in the display engine.


Lennart Borgman (gmail) wrote:
> Scrolling down with down arrow get stuck in a loop in some positions. 
> Cursor goes down to the bottom of the screem, but then the cursor jumps 
> up some lines. The page is not scrolled down as it should be. The cursor 
> is stuck in this loop.
> 
> To reproduce this start with
> 
>   emacs -Q
> 
> then open the attached file (vline.el) and do
> 
>   M-x eval-buffer
>   M-x vline-mode
>   M-x viper
>   <down-arrow>
> 
> Just hold <down-arrow> down and the bug will eventually show up. To make 
> it easier to see what happens you can reduce frame height first.
> 
> 
> 
> 
> In GNU Emacs 23.0.50.1 (i386-mingw-nt5.1.2600)
>  of 2008-01-13 on my-pc
> Windowing system distributor `Microsoft Corp.', version 5.1.2600
> configured using `configure --with-gcc (3.4) --cflags -Ic:/g/include'
> 
> 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: ENU
>   locale-coding-system: cp1252
>   default-enable-multibyte-characters: t
> 
> Major mode: Emacs-Lisp
> 
> Minor modes in effect:
>   vline-mode: t
>   tooltip-mode: t
>   tool-bar-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
>   line-number-mode: t
> 
> Recent input:
> C-x C-f v l <tab> <return> M-x e v a l - b u f f e
> r <return> M-x v i p e r - m o d e <return> M-x v l
> i n e - m o d e <return> <help-echo> <help-echo> <help-echo>
> <down> <down> <down> <down> <down> <down> <down> <down>
> <down> <down> <down> <down> <down> <down> <down> <down>
> <down> <down> <down> <down> <down> <down> <down> <down>
> <down> <down> <down> <down> <down> <down> <down> <down>
> <down> <down> <down> <down> <down> <down> <down> <down>
> <down> <down> <down> <down> <down> <down> <down> <down>
> <down> <down> <down> <down> <down> <down> <down> <down>
> <down> <down> <down> <down> <down> <down> <down> <down>
> <down> <down> <down> <down> <down> <down> <down> <down>
> <down> <down> <down> <down> <down> <down> <down> <down>
> <down> <help-echo> <help-echo> M-h <f10> <menu-bar>
> <help-menu> <send-emacs-bug-report>
> 
> Recent messages:
> Warning: no fonts matching 
> `-*-opensymbol-normal-r-normal-*-12-*-*-*-c-*-iso8859-1' available [2 
> times]
> For information about GNU Emacs and the GNU system, type C-h C-a.
> Loading subst-ksc...done
> Loading subst-gb2312...done
> Loading subst-big5...done
> Loading subst-jis...done
> Loading viper...
> Loading c:/Documents and Settings/Lennart Borgman/Application 
> Data/.viper...done
> Loading viper...done
> Vline mode enabled
> 
> 
> ------------------------------------------------------------------------
> 
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