[Bug-AUCTeX] 2006-10-16; fill-paragraph merges two paragraphs

[Reiner Steib]

Emacs  : GNU Emacs 22.0.50.29 (x86_64-unknown-linux-gnu, GTK+ Version 2.4.9)
 of 2006-10-16 on bridgekeeper
Package: 2006-10-16

current state:
==============
(setq
 AUCTeX-date "2006-10-16"
 window-system 'x
 LaTeX-version "2e"
 TeX-style-path '("style" "auto" [...])
 TeX-auto-save t
 TeX-parse-self t
 TeX-master nil
 TeX-command-list [...]
 )

I can reproduce the problem on a vanilla Emacs 21.3 (from SUSE 9.2)
with AUCTeX 11.83.

Sample file:

--8<---------------cut here---------------start------------->8---
\documentclass{article}
\begin{document}
\begin{figure}
  \caption[Xxxxxx"=Xxxxxxx"=Xxxx xxx xxxxxxxxxx xxxxxxxxxxxx Xxxxxx]%
  {%
    Xxxxxx"=Xxxxxxx"=Xxxx xxxxx xxx Xxxxxxß xxxxx xxxxxxxxxx xxxxxxxxxxxx
    Xxxxxx ($\vec{E}_{\text{st}}$) sxxxxxxxx xxx Xxxxxxx"=Xxxx
    (xx xxxxxxxxx $x$"=Xxxxxxxx).
    

    Xxx Xxxxxxxxxxxxxx {xxxx} xxxxxxxxxx xxxxxxxxxxxx Xxxx (siehe 
\figurename~\ref{fig:XXX_xx_xxxxx}) xxxx {xxxxxxxxxxx} xxxxxxxxxxxxx.  Xxx
    Xxxxxxxxxxxxxxxx xxxxäxx $\omega_{st}$.  Xxxxx xxx Xxxxxxß xxx xxxxxxxxxx
    xxxxxxxxxxxx Xxxxxx $\vec{E}_{\text{st}}$ xxxxxxxxxxx xxxx xxx
    Xxxxxxxxxxxxxx.  Xxxxx Xxxxxxxx xxx xxx Xxxxxxxx $\omega$ xxxxxx
    xxxxxxxxx Xxxxxxxxx xxxxxxx (xxxxxxxxxxx Xxxxx).  Xxxxx xxx xäxxxxxxx
    Xxxxxxxx xxx Xxxxxxxxxäxxx \xXxxxx{xxxxxx xxxxxxxxxx} xxxxxxxx xxx
    Xxxxxxxxxxxxxxxxx $\vec{X}_{\text{cs}}$, xxxxxxx xxx xxx Xxxxxxxxxxxxxx
    xxxxxx Xxxxxxxxx xxx xxx Xxxxxxx $\ell \equiv z_3-z_1$ dxx Xxxxxxxxxäxxx
    xxxäxxx.
    \label{fig:XXX_xxxx_xxxxx}
  }%
\end{figure}
\end{document}
--8<---------------cut here---------------end--------------->8---

Move cursor on the blank after "siehe" and press `M-q'.  I get:

--8<---------------cut here---------------start------------->8---
\documentclass{article}
\begin{document}
\begin{figure}
  \caption[Xxxxxx"=Xxxxxxx"=Xxxx xxx xxxxxxxxxx xxxxxxxxxxxx Xxxxxx]%
  {%
    Xxxxxx"=Xxxxxxx"=Xxxx xxxxx xxx Xxxxxxß xxxxx xxxxxxxxxx
    xxxxxxxxxxxx Xxxxxx ($\vec{E}_{\text{st}}$) sxxxxxxxx xxx
    Xxxxxxx"=Xxxx (xx xxxxxxxxx $x$"=Xxxxxxxx).  Xxx Xxxxxxxxxxxxxx
    {xxxx} xxxxxxxxxx xxxxxxxxxxxx Xxxx (siehe
    \figurename~\ref{fig:XXX_xx_xxxxx}) xxxx {xxxxxxxxxxx}
    xxxxxxxxxxxxx.  Xxx Xxxxxxxxxxxxxxxx xxxxäxx $\omega_{st}$.  Xxxxx
    xxx Xxxxxxß xxx xxxxxxxxxx xxxxxxxxxxxx Xxxxxx
    $\vec{E}_{\text{st}}$ xxxxxxxxxxx xxxx xxx Xxxxxxxxxxxxxx.  Xxxxx
    Xxxxxxxx xxx xxx Xxxxxxxx $\omega$ xxxxxx xxxxxxxxx Xxxxxxxxx
    xxxxxxx (xxxxxxxxxxx Xxxxx).  Xxxxx xxx xäxxxxxxx Xxxxxxxx xxx
    Xxxxxxxxxäxxx \xXxxxx{xxxxxx xxxxxxxxxx} xxxxxxxx xxx
    Xxxxxxxxxxxxxxxxx $\vec{X}_{\text{cs}}$, xxxxxxx xxx xxx
    Xxxxxxxxxxxxxx xxxxxx Xxxxxxxxx xxx xxx Xxxxxxx $\ell \equiv
    z_3-z_1$ dxx Xxxxxxxxxäxxx xxxäxxx.
    \label{fig:XXX_xxxx_xxxxx}
  }%
\end{figure}
\end{document}
--8<---------------cut here---------------end--------------->8---

Bye, Reiner.
-- 
       ,,,
      (o o)
---ooO-(_)-Ooo---  |  PGP key available  |  http://rsteib.home.pages.de/