Fix parsing multiple keys#6592
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Typing with an input method -- Chinese, Japanese, Korean, accented
Latin, ZWJ emoji, etc. -- leaked a raw terminal escape sequence into the
prompt instead of inserting the text. For example, typing "我知道"
produced:
我[32;;19981:30693:36947u
Root cause is upstream in Textual. When an IME commits more than one
codepoint at once, the terminal sends them in a single Kitty
keyboard-protocol "associated text" field as colon-separated codepoints
(e.g. "\x1b[..;..;25105:30693:36947u"). textual<=8.2.7 neither matched
the colons in its CSI-u parser regex nor decoded past the first
codepoint, so the whole sequence surfaced as literal text.
textual 8.2.8 fixes this (Textualize/textual#6592) by parsing all
colon-separated codepoints and emitting one key event per codepoint.
Bump the dependency floor so the bundled TUI picks up the fix; no
QwenPaw code change is required.
Verified on textual 8.2.8: the parser turns the sequence into the three
key events 我 / 知 / 道, and the TUI unit suite passes.
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The kitty key protocol provide multiple characters in the text field for a single keypress, which Textual wasn't parsing.
When you hit option+n followed by a forward slash, the terminal sends a single sequence containing two text characters. Textual translates this into 2 key events, which results in apps doing the right thing.
Fixes #6562