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fix(tui): avoid main-screen scrollback reset loops

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LeonSGP43 2026-05-03 21:19:45 +08:00 • committed by Teknium
parent 31f22890ea
commit a494a614d0
2 changed files with 59 additions and 4 deletions
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17
ui-tui/packages/hermes-ink/src/ink/log-update.ts
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@ -226,7 +226,13 @@ export class LogUpdate {
return fullResetSequence_CAUSES_FLICKER(next, 'offscreen', stylePool)
}
if (prev.screen.height >= prev.viewport.height && prev.screen.height > 0 && cursorAtBottom && !isGrowing) {
if (
altScreen &&
prev.screen.height >= prev.viewport.height &&
prev.screen.height > 0 &&
cursorAtBottom &&
!isGrowing
) {
// viewportY = rows in scrollback from content overflow
// +1 for the row pushed by cursor-restore scroll
const viewportY = prev.screen.height - prev.viewport.height
@ -330,8 +336,15 @@ export class LogUpdate {
}
// If the cell outside the viewport range has changed, we need to reset
// because we can't move the cursor there to draw.
// because we can't move the cursor there to draw. In main-screen mode,
// those rows are already in terminal scrollback and invisible; resetting
// on every scrollback-only update can loop when a resize changes the
// physical buffer. Shrink-to-visible cases are handled above.
if (y < viewportY) {
if (!altScreen) {
return
}
needsFullReset = true
resetTriggerY = y