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

<?xml version='1.0' encoding='UTF-8'?>
<glyph name="Odieresis" format="2">
  <advance width="500"/>
  <unicode hex="00D6"/>
  <outline>
    <component base="O"/>
    <component base="dieresis" xOffset="19" yOffset="368"/>
  </outline>
</glyph>