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Improve performance when reading very large TrueType "cmap" tables (issue 19319) In the affected font the total number of mapping-entries is `1142348`, and no less than `997473` of them are duplicates. Given that every duplicate causes a lot of Array elements to be moved this becomes extremely inefficient, which we can avoid by keeping track of seen `charCode`s and directly build the final mappings-Array instead.
2025-01-13 13:03:59 +01:00
https://github.com/user-attachments/files/18396493/2023-ESG-report-eng.pdf
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