texmath-0.8: tests/writers/mfracZcomp-31.tex
\text{Here's\ a\ display~}{{F\left( {t,y} \right)} = \frac{\left( {1,\frac{\mathbb{d}y}{\mathbb{d}t}} \right)}{\left. \parallel\left( {1,\frac{\mathbb{d}y}{\mathbb{d}t}} \right)\parallel \right.}}\text{~with\ some\ real\ math\ in\ it.}