[kern] Ensure unknown kern pairs don't overwrite DFLT#1785
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Both Zzzz (unknown) and Zyyy (common) map to the DFLT opentype tag, and if we happened to have any pairs assigned to the unknown script they would clobber the default lookups.
anthrotype
approved these changes
Nov 27, 2025
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Both Zzzz (unknown) and Zyyy (common) map to the DFLT opentype tag, and if we happened to have any pairs assigned to the unknown script they would clobber the default lookups.