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fix(tui): preserve rendered indentation in selections

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- trim only empty edge rows instead of full selected text
- bound selection paint using unwritten cells so rendered indentation remains copyable
This commit is contained in:
Brooklyn Nicholson 2026-04-25 15:14:26 -05:00
parent 132620ba3d
commit bba16943f6
2 changed files with 72 additions and 32 deletions
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18
ui-tui/packages/hermes-ink/src/ink/selection.test.ts
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@ -19,6 +19,8 @@ const screenWithText = () => {
return { screen, styles }
}
const styledSpace = (styles: StylePool) => styles.intern([{ code: '\x1b[4m', endCode: '\x1b[24m', type: 'ansi' }])
describe('selection whitespace handling', () => {
it('does not copy whitespace-only selections', () => {
const { screen } = screenWithText()
@ -40,6 +42,22 @@ describe('selection whitespace handling', () => {
expect(getSelectedText(selection, screen)).toBe('hi')
})
it('preserves selected indentation when spaces are rendered content', () => {
const styles = new StylePool()
const screen = createScreen(10, 1, styles, new CharPool(), new HyperlinkPool())
const indentStyle = styledSpace(styles)
const selection = createSelectionState()
setCellAt(screen, 0, 0, { char: ' ', hyperlink: undefined, styleId: indentStyle, width: CellWidth.Narrow })
setCellAt(screen, 1, 0, { char: ' ', hyperlink: undefined, styleId: indentStyle, width: CellWidth.Narrow })
setCellAt(screen, 2, 0, { char: 'x', hyperlink: undefined, styleId: screen.emptyStyleId, width: CellWidth.Narrow })
startSelection(selection, 0, 0)
updateSelection(selection, 9, 0)
expect(getSelectedText(selection, screen)).toBe(' x')
})
it('does not paint selection background on leading/trailing empty cells or empty rows', () => {
const { screen, styles } = screenWithText()
const selection = createSelectionState()