command fill-paragraph deletes leading Umlauts if line begins with space

[Ulrich Scholz]

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In GNU Emacs 21.3.1 (i386-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2004-10-16 on raven, modified by Debian
configured using `configure '--build=i386-linux' '--host=i386-linux' 
'--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' 
'--localstatedir=/var/lib' '--infodir=/usr/share/info' 
'--mandir=/usr/share/man' '--with-pop=yes' '--with-x=yes' 
'--with-x-toolkit=athena' 'CFLAGS=-DDEBIAN -g -O2' 'build_alias=i386-linux' 
'host_alias=i386-linux''
Important settings:
  value of $LC_ALL: C
  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.ISO-8859-15
  locale-coding-system: nil
  default-enable-multibyte-characters: nil

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

The command changes the following paragraph

 �bersetzung L�sungsverfahren f�r eine spezielle Problemdom�ne haben auch
Probleme:

to the paragraph

bersetzung L�sungsverfahren f�r eine spezielle Problemdom�ne haben
auch Probleme:

Note that the � of �bersetzung is missing in the second version.  The
bug eats any number of Umlauts, but only as first characters of the line after
some spaces.  Umlauts after the first non-Umlaut or in lines that begin with a
non-space remain.

I don't know how to get a list of all active modes.  The bug occurs while
editing an LaTeX-file.  I use auc-tex and reftex.  iso-accents-mode does not
seem to cause the bug.



Recent input:
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <drag-mouse-1> <help-echo> <down-mouse-1> 
<mouse-1> <down-mouse-2> <mouse-2> <help-echo> e <return> 
<help-echo> <down-mouse-1> <mouse-1> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> C-x 3 C-x 4 4 C-x 4 <down-mouse-1> 
<mouse-1> <menu-bar> <buffer> "projekt_leanplan.tex" 
<help-echo> <down> <down> <down> <down> <down> <down> 
<down> <up> <return> <return> <return> <up> <up> SPC 
" U b e r f a l l M-q <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <menu-bar> <help-menu> 
<report-emacs-bug>

Recent messages:
Making completion list... [4 times]
isearch-abort: Quit
call-interactively: Quit
Making completion list...
call-interactively: Command attempted to use minibuffer while in minibuffer
Wrote /home/scholzuh/bug.txt
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Fontifying *mail*... (regexps........)
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Auto-saving...done