texmath-0.7: tests/writers/mfenced-05.tex
\left\{ \begin{array}{l}
U \\
V \\
\end{array} \right| = \left| \begin{array}{l}
U \\
V \\
\end{array} \right\}
\left\{ \begin{array}{l}
U \\
V \\
\end{array} \right| = \left| \begin{array}{l}
U \\
V \\
\end{array} \right\}