texmath-0.7: tests/writers/mfenced-04.tex
\left\lceil \begin{array}{l}
U \\
V \\
\end{array} \right\rfloor = \left\lfloor \begin{array}{l}
U \\
V \\
\end{array} \right\rceil
\left\lceil \begin{array}{l}
U \\
V \\
\end{array} \right\rfloor = \left\lfloor \begin{array}{l}
U \\
V \\
\end{array} \right\rceil