pandoc/test/command/10915.md

% pandoc -f latex
\newcommand{\a}{\ifmmode x \else y \fi}
$\a$ and \a
^D
<p><math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi>x</mi><annotation encoding="application/x-tex">x</annotation></semantics></math>
and y</p>