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-rw-r--r--components/gfx/text/util.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/components/gfx/text/util.rs b/components/gfx/text/util.rs
index be9ba144dca..016e18f2b56 100644
--- a/components/gfx/text/util.rs
+++ b/components/gfx/text/util.rs
@@ -149,5 +149,6 @@ pub fn is_cjk(codepoint: char) -> bool {
}
// https://en.wikipedia.org/wiki/Plane_(Unicode)#Supplementary_Ideographic_Plane
- unicode_plane(codepoint) == 2
+ // https://en.wikipedia.org/wiki/Plane_(Unicode)#Tertiary_Ideographic_Plane
+ unicode_plane(codepoint) == 2 || unicode_plane(codepoint) == 3
}