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fix(tui): handle emojis in input cursor (#1183)

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xu0o0 2026-02-03 01:03:57 +08:00 • committed by GitHub
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commit fe534b2200
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1 changed files with 5 additions and 2 deletions
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7
packages/tui/src/components/input.ts
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@ -307,9 +307,12 @@ export class Input implements Component, Focusable {
// Build line with fake cursor
// Insert cursor character at cursor position
const graphemes = [...segmenter.segment(visibleText.slice(cursorDisplay))];
const cursorGrapheme = graphemes[0];
const beforeCursor = visibleText.slice(0, cursorDisplay);
const atCursor = visibleText[cursorDisplay] || " "; // Character at cursor, or space if at end
const afterCursor = visibleText.slice(cursorDisplay + 1);
const atCursor = cursorGrapheme?.segment ?? " "; // Character at cursor, or space if at end
const afterCursor = visibleText.slice(cursorDisplay + atCursor.length);
// Hardware cursor marker (zero-width, emitted before fake cursor for IME positioning)
const marker = this.focused ? CURSOR_MARKER : "";