pandoc/test/command/3816.md

```
% pandoc --mathjax -t html5 --wrap=preserve
This is an equation:
\begin{equation}
y+2 = 3
\end{equation}

This is a system of equations:
\begin{align*}
x^2+y^2 & = 2 \\
\sin(y) & = 0.5
\end{align*}

This is Euler's formula:
\begin{eqnarray*}
e^{i\pi} + 1 & = & 0.
\end{eqnarray*}
^D
<p>This is an equation:
<span class="math display">\[\begin{equation}
y+2 = 3
\end{equation}\]</span></p>
<p>This is a system of equations:
<span class="math display">\[\begin{align*}
x^2+y^2 &amp; = 2 \\
\sin(y) &amp; = 0.5
\end{align*}\]</span></p>
<p>This is Euler’s formula:
<span class="math display">\[\begin{eqnarray*}
e^{i\pi} + 1 &amp; = &amp; 0.
\end{eqnarray*}\]</span></p>
```