<fontconfig>
<alias>
<family>Khmer OS Siemreap</family>
<default>
<family>monospace</family>
</default>
</alias>
<match>
<test name="lang" compare="contains">
<string>km</string>
</test>
<test name="family">
<string>monospace</string>
<edit name="family" mode="prepend">
<string>Khmer OS Siemreap</string>
</edit>
</match>
</fontconfig>