Problem with reveal-post-command

[Christoph Conrad]

In GNU Emacs 21.3.50.18 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2003-07-10 on linux
configured using `configure '--with-x''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: POSIX
  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: address@hidden
  locale-coding-system: iso-latin-9
  default-enable-multibyte-characters: t

In advance i want to say that i can not reproduce this error with a
"-q --no-site-file" emacs, cause it only happens when doing something
special in Gnus. Nevertheless i thought it might be useful to
describe.

I open "comp.risks" in (CVS) Gnus, read in digest an article and try
to leave the group by pressing "q". Then the modeline blinks
endlessly, emacs can't be stopped doing that by pressing "C-g". In the
modeline there's a text white on black saying (i kept the sense of the
words):

,----
| Reveal: (error: marker doesn't point anywhere)
`----

I searched in the emacs lisp files and found that place in reveal.el.
The following WORKAROUND did it for me:

,----
| (defadvice reveal-post-command( around reveal-post-command-null act )
|   )
`----