fontconfig-local.xml

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
  <!-- 正常的程式：不是 WebKit 也不是 LibreOffice -->
  <match>
    <test name="family" compare="eq">
      <string>sans-serif</string>
    </test>
    <test name="prgname" compare="not_eq">
      <string>soffice.bin</string>
    </test>
    <test name="prgname" compare="not_eq">
      <string>WebKitWebProcess</string>
    </test>
    <edit name="family" mode="assign" binding="strong">
      <string>Cantarell</string>
      <string>Noto Sans CJK TC</string>
    </edit>
  </match>
  <!-- 特殊處理 WebKit -->
  <match>
    <test name="family" compare="eq">
      <string>sans-serif</string>
    </test>
    <test name="prgname" compare="eq">
      <string>WebKitWebProcess</string>
    </test>
    <edit name="family" mode="assign_replace" binding="same">
      <string>Cantarell</string>
      <string>Noto Sans CJK TC</string>
    </edit>
  </match>
  <!-- 特殊處理 LibreOffice -->
  <match>
    <test name="family" compare="eq">
      <string>sans-serif</string>
    </test>
    <test name="prgname" compare="eq">
      <string>soffice.bin</string>
    </test>
    <edit name="family" mode="assign_replace" binding="strong">
      <string>Noto Sans CJK TC</string>
    </edit>
  </match>
  <!-- 替換預設的 serif 字型 -->
  <match>
    <test name="family" compare="eq">
      <string>serif</string>
    </test>
    <edit name="family" mode="assign" binding="strong">
      <string>Noto Serif CJK TC</string>
    </edit>
  </match>
  <!-- 替換預設的 monospace 字型 -->
  <match>
    <test name="family" compare="eq">
      <string>monospace</string>
    </test>
    <edit name="family" mode="assign" binding="strong">
      <string>DejaVu Sans Mono</string>
    </edit>
  </match>
</fontconfig>