Fontconfig warning: "/etc/fonts/conf.d/90-fonts-unfonts-core.conf"

Solution 1:

I have not tested this!

This is a guess based on your error message. Since it is complaining that <test></test> sections can't have multiple values, probably all you need to do is split it into multiple ones:

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
    <match target="font">
        <test name="family" qual="any">
            <string>은 바탕</string>
        </test>
        <test name="family" qual="any">
              <string>UnBatang</string>
        </test>
        <test name="family" qual="any">
                <string>은 돋움</string>
        </test>
        <test name="family" qual="any">
              <string>UnDotum</string>
        </test>
        <test name="family" qual="any">
                <string>은 궁서</string>
        </test>
        <test name="family" qual="any">
              <string>UnGungseo</string>
        </test>
        <test name="family" qual="any">
                <string>은 필기</string>
        </test>
        <test name="family" qual="any">
              <string>UnPilgi</string>
        </test>
        <test name="family" qual="any">
                <string>은 그래픽</string>
        </test>
        <test name="family" qual="any">
              <string>UnGraphic</string>
        </test>

        <edit name="antialias" mode="assign" binding="strong"><bool>true</bool></edit>
        <edit name="hinting"   mode="assign" binding="strong"><bool>false</bool></edit>
        <edit name="autohint"  mode="assign" binding="strong"><bool>true</bool></edit>
        <edit name="hintstyle" mode="assign" binding="strong"><const>hintslight</const></edit>
    </match>
</fontconfig>