Pick the matching Noto CJK variant for language-tagged text
The generic assigns swap sans-serif, serif and monospace for fonts with no CJK glyphs, so tagged Chinese text ends up on whatever Noto CJK variant the charset scan finds first, usually the Japanese one. Fold the many Chinese tags down to one per variant and prepend the matching family ahead of the assigns.
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@@ -1,6 +1,313 @@
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<?xml version="1.0"?>
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<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
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<fontconfig>
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<!-- CJK: give language-tagged text the Noto CJK variant that matches its
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language. noto-fonts-cjk ships all five, Han glyph shapes differ between
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them, and the generic assigns below would otherwise hand tagged CJK text
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to families with no Han coverage, leaving the variant to a charset-scan
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lottery. Chinese arrives under many tags (W3C recommends the zh-Hans and
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zh-Hant script forms), so the tags are first folded onto one tag per
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variant. Order is load-bearing: a bare zh and a bare zh-hant satisfy
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the contains test of every one of their extensions, so both are pinned
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by exact matches before the extension folds run. Cantonese under its
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own primary tag folds to Hong Kong forms, except explicitly
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Simplified Cantonese, which folds to SC. -->
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<match target="pattern">
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<test name="lang" compare="eq">
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<string>zh</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-cn</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="eq">
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<string>zh-hant</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-tw</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-hant-hk</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-hk</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-hant-mo</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-hk</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-hant</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-tw</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-hans</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-cn</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-sg</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-cn</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-mo</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-hk</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="eq">
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<string>yue</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-hk</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>yue-hans</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-cn</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>yue-cn</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-cn</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>yue</string>
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</test>
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<edit name="lang" mode="assign">
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<string>zh-hk</string>
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</edit>
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</match>
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<!-- Each variant is then prepended for its tag, ahead of the assigns below
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because these test the generic names those assigns replace. Unlike the
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Arabic rule further down, these carry a family test, so the prepend
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lands just ahead of the matched generic and a concrete family the app
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asked for stays in front of the variant. -->
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-cn</string>
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</test>
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<test name="family">
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<string>sans-serif</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Sans CJK SC</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-cn</string>
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</test>
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<test name="family">
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<string>serif</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Serif CJK SC</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-cn</string>
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</test>
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<test name="family">
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<string>monospace</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Sans Mono CJK SC</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-hk</string>
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</test>
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<test name="family">
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<string>sans-serif</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Sans CJK HK</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-hk</string>
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</test>
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<test name="family">
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<string>serif</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Serif CJK HK</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-hk</string>
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</test>
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<test name="family">
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<string>monospace</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Sans Mono CJK HK</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-tw</string>
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</test>
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<test name="family">
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<string>sans-serif</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Sans CJK TC</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-tw</string>
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</test>
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<test name="family">
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<string>serif</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Serif CJK TC</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>zh-tw</string>
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</test>
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<test name="family">
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<string>monospace</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Sans Mono CJK TC</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>ja</string>
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</test>
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<test name="family">
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<string>sans-serif</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Sans CJK JP</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>ja</string>
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</test>
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<test name="family">
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<string>serif</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Serif CJK JP</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>ja</string>
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</test>
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<test name="family">
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<string>monospace</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Sans Mono CJK JP</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>ko</string>
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</test>
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<test name="family">
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<string>sans-serif</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Sans CJK KR</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>ko</string>
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</test>
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<test name="family">
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<string>serif</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Serif CJK KR</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="lang" compare="contains">
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<string>ko</string>
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</test>
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<test name="family">
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<string>monospace</string>
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</test>
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<edit name="family" mode="prepend" binding="strong">
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<string>Noto Sans Mono CJK KR</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="family" qual="any">
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<string>sans-serif</string>
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