Leonard Hecker

Fix various KKP encoding issues (#20052) NOTE: This commit changes our input model to treat all Ctrl-Alt combinations as an AltGr modifier by default. Ctrl+Alt+/ will not produce `"\x1b\x1f"` anymore. This fixes the following issues: * Base-key report of non-ASCII keys was broken * AltGr on international keyboards would spam Ctrl/Alt up/down events repeatedly forever * KKP doesn't report modifier key repeats * AltGr+Key combinations were reported as Ctrl+Alt+key but should've been just plain Key-But-Modified Closes #19977 ## Validation Steps Performed This cannot be easily tested in unit tests, due to the dependence on international keyboard layouts. It appears to work correctly from what I can tell.

Fix visual artifacts when using QQ Wubi IME (#20542)

Fix two KKP ReportEventTypes issues (#20551) * Dead key releases should not be reported * Modifier key releases should only be reported if `ReportAllKeysAsEscapeCodes` is also set * (Also fixes encoding for numpad Enter) Closes #20522 ## Validation Steps Performed * Switch to Swiss French (`0000100c`) layout * Enable modes 0b11 (`DisambiguateEscapeCodes`, `ReportEventTypes`) * Pressing `Shift+]` produces `!` ✅ * Pressing `] ] ] A` produces `¨¨ä` ✅

Do not retry a DSR-CPR if the ConPTY host did not respond (#20510) People sometimes use ConPTY just for console API translation and so the host lacks any VT capabilities. This means DSR-CPR queries never get a response. Previously we would never clear the dirty flag which would result in a 500ms lag on each `GetConsoleScreenBufferInfo` call and PowerShell calls that API _**on every single stdout print**_ (sometimes per character due to lack of any stdout buffering). ## Validation Steps Performed * Lobotomize conhost's ability to respond to DSR-CPR * Run OpenConsole --> VtPipeTerm --> pwsh * Resize the window * After this PR, stdio will not lag

ConPTY: Do not wait for DA1 on startup (#20536) A counterpart to #20510. After this commit you can spawn ConPTY again without handling any queries and it'll (mostly) just work.

Fix KKP auto-repeat events (#20500) Turns out, ReportEventTypes does not control autorepeat. Closes #20499

Add a note about HWND_MESSAGE (#20656) Forgot about this tidbit from #17829.