texmath-0.13.2.1: test/regression/293.test

<<< tex
x = y \tag{1}
>>> mml
<?xml version='1.0' ?>
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>
    <mi>x</mi>
    <mo>=</mo>
    <mi>y</mi>
  </mrow>
</math>