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Json.parse decodes \uXXXX to UTF-8 - a surrogate pair joined, a lone surrogate or bad hex as U+FFFD - and \t \r \b \f, where it dropped the backslash and kept the hex as text; examples/lang/json_unicode checks it byte by byte

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Orkun ÇAKILKAYA 2026-09-29 21:07:10 +03:00
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bump: patch
type: fix
**`Json.parse` decodes `\uXXXX`.** An escaped code point is UTF-8 now - a surrogate pair joined into one, a
lone surrogate or bad hex as U+FFFD - where the backslash was dropped and the hex kept as text ("iu015f"),
and `\t`, `\r`, `\b` and `\f` are the characters they name. Python's `json.dump` writes non-ASCII this way.