5.3 mfenced

OO doesn’t seem to hono mfenced

\documentclass{article}  
\begin{document}  
\[  
\sin\left(x\right)\]  
\end{document}

<..configure ooffice-mml latex..>+
 <.mfenced patches.>
-_-_-

<..configure ooffice-mml plain..>
 <.mfenced patches.>
-_-_-

<..mfenced patches..>
 \Configure{left}
    {}
    {\HCode{<\a:mathml mrow>\expandafter
        \ifx \csname \string#1:lr del\endcsname\relax
                  <\a:mathml mo form="prefix" >#1</\a:mathml mo\space>\else
           \expandafter\ifx \csname \string#1:lr del\endcsname\empty \else
               <\a:mathml mo form="prefix" >\csname
                              \string#1:lr del\endcsname</\a:mathml mo>\fi
        \fi<\a:mathml mrow>}}
-_-_-

<..mfenced patches..>+
 \Configure{right}
    {\HCode{</\a:mathml mrow>\expandafter
        \ifx \csname \string#1:lr del\endcsname\relax
             <\a:mathml mo form="postfix" >#1</\a:mathml mo>\else
           \expandafter\ifx \csname \string#1:lr del\endcsname\empty \else
             <\a:mathml mo form="postfix" >\csname
                              \string#1:lr del\endcsname</\a:mathml mo>\fi
        \fi
       }}
    {\HCode{</\a:mathml mrow>}}
-_-_-