<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns="http://www.w3.org/2000/svg" onload="runTest()">
<script type="text/javascript"><![CDATA[
function runTest() {
    var path = 'M0,0L0,1000L1000,1000L1000,0z';
    document.getElementById('glyph').setAttribute('d', path);
}
]]></script>
<defs>
  <font horiz-adv-x="500" id="t">
    <font-face font-family="test" units-per-em="1000" ascent="700" descent="300" />
    <missing-glyph d="M100,100V900H400V100zM120,120V880H380V120z" />
    <glyph unicode="a" d="M100,100H400L250,1000z" id="glyph" />
  </font>
</defs>
<text font-family="test" font-size="150" x="10" y="160" fill="green" fill-rule="evenodd" >a</text>
</svg>