font-RobotoMono/sources/RobotoMono-Regular.ufo/glyphs.background/E_macron.glif

<?xml version='1.0' encoding='UTF-8'?>
<glyph name="Emacron" format="2">
  <advance width="500"/>
  <unicode hex="0112"/>
  <outline>
    <component base="E"/>
    <component base="macron" xOffset="9" yOffset="330"/>
  </outline>
</glyph>