Chong Yidong <cyd@stupidchicken.com> writes:

> Richard Stallman <rms@gnu.org> writes:
>
>> Can someone please debug this, and ack?
>
> Like I said in an earlier message, I haven't been able to reproduce
> this at all.  Maybe a more detailed recipe and more information would
> help.
>
>> From: David Kastrup <dak@gnu.org>
>> Subject: Re: Redraw problem with overlapping frames
>> To: emacs-pretest-bug@gnu.org
>>
>> David Kastrup <dak@gnu.org> writes:
>>
>>
>> It would appear that scrolling does copy the material in the partially
>> obscured cases, but fails to clear the partial lines before
>> resp. after moving the displayed material at top resp. bottom.

I append an illustration of a window configuration and a command in a
shell window that shows this effect for me.  I recompiled with the
newest sources.

It may be important (no idea) that I compiled
--without-toolkit-scroll-bars.

The effect has been visible for months, also on emacs-multitty.

In GNU Emacs 22.1.50.4 (i686-pc-linux-gnu, GTK+ Version 2.10.11)
 of 2007-08-14 on lisa
Windowing system distributor `The X.Org Foundation', version 11.0.70200000
configured using `configure  '--prefix=/usr/local/emacs-21' '--without-toolkit-scroll-bars''

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
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Major mode: Message

Minor modes in effect:
  mml-mode: t
  shell-dirtrack-mode: t
  TeX-PDF-mode: t
  server-mode: t
  desktop-save-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
  line-number-mode: t
  abbrev-mode: t


-- 
David Kastrup