[Emacs-bug-tracker] bug#5489: marked as done (23.1.91; scroll bar redisplay problem)

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Your message dated Sat, 13 Feb 2010 23:09:07 +0100
with message-id <address@hidden>
and subject line Re: bug#5489: 23.1.91; scroll bar redisplay problem
has caused the Emacs bug report #5489,
regarding 23.1.91; scroll bar redisplay problem
to be marked as done.

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If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

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5489: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=5489
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--- Begin Message --- Subject: 23.1.91; scroll bar redisplay problem Date: Thu, 28 Jan 2010 23:50:06 +0100 User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.91 (gnu/linux)

Some change since the pretest started has resulted in a redisplay
problem with the scroll bar.  I have been able to reproduce it only with
the third party library tabbar.el (available from
http://emhacks.cvs.sourceforge.net/viewvc/*checkout*/emhacks/emhacks/tabbar.el?revision=1.69).
Here is a minimal recipe:

1. Let ~/.emacs consist of the following lines:

(load "/path/to/tabbar.el")
(tabbar-mode 1)

2. emacs

3. C-h f RET help RET

=> Now the frame is split vertically, and the lower window contains no scroll
bar.  Here is a screenshot:

scroll-bar-bug.png
Description: scroll bar display bug

I have also observed this in other split window configurations, e.g. the
Summary and Article buffers in Gnus.  The missing scroll bar appears as
soon as the lower window is made current.  I have also seen the scroll
appear spontaneously after a few seconds, but I haven't found a way to
reproduce that.  The bug occurs only if the above sexps are in
user-init-file; it does not occur after evalling them after starting
with -Q, or loading them from the command line.

This bug is present in all pretest builds I have, but the earliest of
these is only from 2010-01-13.  It is not present in the last
pre-pretest build I have, from 2009-11-27.

I don't know how to debug this, but if someone can guide me, I'll try.


In GNU Emacs 23.1.91.4 (i686-pc-linux-gnu, GTK+ Version 2.18.1)
 of 2010-01-28 on escher
Windowing system distributor `The X.Org Foundation', version 11.0.10605000
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

--- End Message ---

> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#5489: 23.1.91; scroll bar redisplay problem
>
>
>
>
> Date: 
>
> Sat, 13 Feb 2010 23:09:07 +0100
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/23.1.91 (gnu/linux)
>
>
>
>
> On Thu, 28 Jan 2010 23:50:06 +0100 Stephen Berman <address@hidden> wrote:
>
> > Some change since the pretest started has resulted in a redisplay
> > problem with the scroll bar.  I have been able to reproduce it only with
> > the third party library tabbar.el (available from
> > http://emhacks.cvs.sourceforge.net/viewvc/*checkout*/emhacks/emhacks/tabbar.el?revision=1.69).
> > Here is a minimal recipe:
> >
> > 1. Let ~/.emacs consist of the following lines:
> >
> > (load "/path/to/tabbar.el")
> > (tabbar-mode 1)
> >
> > 2. emacs
> >
> > 3. C-h f RET help RET
> >
> > => Now the frame is split vertically, and the lower window contains no scroll
> > bar.
>
> When I read the report of bug#5571, I suspected it and the above were
> probably the same, and indeed, setting GDK_NATIVE_WINDOWS=1 prevents the
> scroll bar disappearance in my recipe above.  What's more, Jan D.'s fix
> for bug#5571 also fixes my bug (at least, with it the recipe above fails
> to make the scroll bar vanish).  Since no one has commented on this bug,
> I feel entitled to close it.  Thanks for the fix.
>
> Steve Berman
>
>
> --- End Message ---