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Fix CSI u double-firing for Ctrl+C, Ctrl+V, and Shift+Enter (#431)

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Co-authored-by: Letta <noreply@letta.com>
This commit is contained in:
Charles Packer
2025-12-30 19:51:51 -08:00
committed by GitHub
parent aeadf27938
commit 0d72e2bbe2
3 changed files with 173 additions and 58 deletions
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60
src/cli/components/PasteAwareTextInput.tsx
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@@ -457,63 +457,9 @@ export function PasteAwareTextInput({
return;
}
// Kitty keyboard protocol: Shift+Enter, Ctrl+Enter, Alt+Enter
// Format: CSI keycode ; modifiers u
// Enter keycode = 13, modifiers: 2=shift, 3=alt, 5=ctrl, 6=ctrl+shift, 7=alt+ctrl, 8=alt+ctrl+shift
// Examples: \x1b[13;2u (Shift+Enter), \x1b[13;5u (Ctrl+Enter), \x1b[13;3u (Alt+Enter)
{
const prefix = "\u001b[13;";
if (sequence.startsWith(prefix) && sequence.endsWith("u")) {
const mod = sequence.slice(prefix.length, -1);
if (mod.length === 1 && mod >= "2" && mod <= "8") {
insertNewlineAtCursor();
return;
}
}
}
// Kitty keyboard protocol: Ctrl+C
// Format: ESC[99;5u (key=99='c', modifier=5=ctrl)
// Kitty also sends key release events: ESC[99;5:3u (:3 = release)
// Only handle key PRESS, not release (to avoid double-triggering)
if (sequence === "\x1b[99;5u") {
// Emit raw Ctrl+C byte for Ink to handle
internal_eventEmitter.emit("input", "\x03");
return;
}
// Ignore Ctrl+C key release/repeat events
if (sequence.startsWith("\x1b[99;5:")) {
return;
}
// Kitty keyboard protocol: Ctrl+V (for clipboard image paste)
// Format: ESC[118;5u (key=118='v', modifier=5=ctrl)
if (sequence === "\x1b[118;5u") {
// Check clipboard for images
const clip = tryImportClipboardImageMac();
if (clip) {
const at = Math.max(
0,
Math.min(caretOffsetRef.current, displayValueRef.current.length),
);
const newDisplay =
displayValueRef.current.slice(0, at) +
clip +
displayValueRef.current.slice(at);
displayValueRef.current = newDisplay;
setDisplayValue(newDisplay);
setActualValue(newDisplay);
onChangeRef.current(newDisplay);
const nextCaret = at + clip.length;
setNudgeCursorOffset(nextCaret);
caretOffsetRef.current = nextCaret;
}
return;
}
// Ignore Ctrl+V key release/repeat events
if (sequence.startsWith("\x1b[118;5:")) {
return;
}
// CSI u modifier+Enter (ESC[13;Nu) is now handled by the CSI u fallback
// in use-input.js, which parses it as return + shift/ctrl/meta flags.
// The useInput handler at line 186 then handles the newline insertion.
// Kitty keyboard protocol: Arrow keys
// Format: ESC[1;modifier:event_typeX where X is A/B/C/D for up/down/right/left