fix(win32): encode KEY_EVENT_RECORD.uChar as UTF-8 for IME input#78
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KoalaHao wants to merge 1 commit into
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fix(win32): encode KEY_EVENT_RECORD.uChar as UTF-8 for IME input#78KoalaHao wants to merge 1 commit into
KoalaHao wants to merge 1 commit into
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KEY_EVENT_RECORD.uChar is a single UTF-16 code unit, but the downstream InputParser decodes as UTF-8 (1/2/3/4-byte sequences dispatched by leading byte). The old code returned String.fromCharCode(char).codeUnits, which for e.g. 你 (U+4F60) produced the int 0x4F60 - not a valid UTF-8 byte - so IME characters (Chinese, Japanese, Korean, anything CJK) never reached the text field. Now encoded as proper UTF-8 via utf8.encode(), with a _pendingHighSurrogate field to reassemble supplementary-plane characters (e.g. emoji) across two consecutive key events. Orphans are discarded so a half-pair followed by a different key never produces a wrong character. Verified: 你 (U+4F60) -> 'e4 bd a0', (surrogate pair 0xD83D/0xDE00) -> 'f0 9f 98 80', both round-trip through utf8.decode.
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KEY_EVENT_RECORD.uChar is a single UTF-16 code unit, but the downstream InputParser decodes as UTF-8 (1/2/3/4-byte sequences dispatched by leading byte). The old code returned String.fromCharCode(char).codeUnits, which for e.g. 你 (U+4F60) produced the int 0x4F60 - not a valid UTF-8 byte - so IME characters (Chinese, Japanese, Korean, anything CJK) never reached the text field.
Now encoded as proper UTF-8 via utf8.encode(), with a _pendingHighSurrogate field to reassemble supplementary-plane characters (e.g. emoji) across two consecutive key events. Orphans are discarded so a half-pair followed by a different key never produces a wrong character.
Verified: 你 (U+4F60) -> 'e4 bd a0', (surrogate pair 0xD83D/0xDE00) -> 'f0 9f 98 80', both round-trip through utf8.decode.