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LibWeb: Allow splitting surrogate pairs in CharacterData.substringData()

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Shannon Booth 2024-10-20 13:50:39 +13:00 • committed by Tim Ledbetter
commit b999f925dc
Notes: github-actions[bot] 2024-10-20 10:19:54 +00:00
3 changed files with 25 additions and 2 deletions
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18
Tests/LibWeb/Text/input/DOM/CharacterData-substringData-break-surrogate-pair.html Normal file
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<script src="../include.js"></script>
<script>
test(() => {
const str = '\uD83D\uDC36'; // 🐶
let t = document.createTextNode(str);
println("Before substringData:");
for (let i = 0; i < t.length; ++i) {
println("[" + i + "]: " + t.data.charCodeAt(i));
}
// Break the surrogate pair
const invalidSubstring = t.substringData(0, 1);
println("After substringData(0, 1):");
for (let i = 0; i < invalidSubstring.length; ++i) {
println("[" + i + "]: " + invalidSubstring.charCodeAt(i));
}
});
</script>