Author

Yusufhan Saçak <yusufhansacak@icloud.com> 2026-02-07 13:44:38 +0300

Parents

79c79c8

Tree

8e5c4a4

feat(textdecoder): add x-user-defined encoding support

Implements the x-user-defined decoder per WHATWG Encoding Standard.

- Map bytes 0x00–0x7F to identical ASCII code points
- Map bytes 0x80–0xFF to Unicode PUA U+F780–U+F7FF
- Add dedicated XUserDefinedDecoder with ASCII fast path (no ICU)
- Register "x-user-defined" label
- Wire through TextDecoder constructor, getImpl(), and decodePtr()
- Add unit tests for decoding, streaming, and fatal mode

Fixes #6039