Auctex: Specifying item rendering?

[Felix E. Klee]

Hi,

I defined two new list environments called "calclist" and
"calcsublist" in Latex and want to have it rendered correctly when I hit
M-Q. A correct rendering looks for example as follows:

\begin{calclist}{Foo}
  \calcitem{bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla
    bla bla bla bla bla bla bla bla }{2, 3}
  \calcitem{bla bla bla}{4}
  \begin{calcsublist}{Bar}
    \calcitem{bla bla bla}{2}
    \calcitem{bla bla bla}{1}
  \end{calcsublist}
  \calcitem{bla bla bla}{5}
\end{calclist}

First, I tried to get the rendering of "\calcitem" correct because,
currently, when hitting M-Q it gets rendered for example as

\calcitem{Bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla
bla bla  bla bla bla bla bla bla }{2, 3} \calcitem{Blabber bla}{4}
 
I'm using AucTex, so I thought I'll customize Latex-Item-Regexp to read
    \(bib\)?item\b\|calcitem
(I also tried "calcitem" alone). But this didn't have any effect. So:

Does anone know how to get \calcitem to be rendered as illustrated above
(i.e. to behave similar to an \item) when hitting M-Q?

Felix

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