<fontconfig>

  <match>

    <test name="lang">

      <string>[loc]</string>

    </test>

    <test name="family">

      <string>[genericname]</string>

    </test>

    <edit name="family" mode="prepend">

      <string>[fontname]</string>

    </edit>

  </match>

  <alias>

    <family>[fontname]</family>

    <default>

      <family>[genericname]</family>

    </default>

  </alias>

</fontconfig>