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fix(tui): arrow history fallback when no line exists

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Follow-up on multiline arrow behavior: Up/Down now fall back to queue/history whenever there is no logical line above/below the caret (not only at absolute start/end character positions). This makes Up from the end of the top line cycle history, matching expected readline-ish behavior.
This commit is contained in:
Brooklyn Nicholson
2026-04-21 18:55:57 -05:00
parent 95fd023eeb
commit 35cc66df62
1 changed files with 7 additions and 6 deletions
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13
ui-tui/src/app/useInputHandlers.ts
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@@ -289,9 +289,11 @@ export function useInputHandlers(ctx: InputHandlerContext): InputHandlerResult {
if (key.upArrow && !cState.inputBuf.length) {
const inputSel = getInputSelection()
const atStart = !cState.input || (!!inputSel && inputSel.start === 0 && inputSel.end === 0)
const cursor = inputSel && inputSel.start === inputSel.end ? inputSel.start : null
const noLineAbove =
!cState.input || (cursor !== null && cState.input.lastIndexOf('\n', Math.max(0, cursor - 1)) < 0)
if (atStart) {
if (noLineAbove) {
cycleQueue(1) || cycleHistory(-1)
return
@@ -300,11 +302,10 @@ export function useInputHandlers(ctx: InputHandlerContext): InputHandlerResult {
if (key.downArrow && !cState.inputBuf.length) {
const inputSel = getInputSelection()
const atEnd =
!cState.input ||
(!!inputSel && inputSel.start === cState.input.length && inputSel.end === cState.input.length)
const cursor = inputSel && inputSel.start === inputSel.end ? inputSel.start : null
const noLineBelow = !cState.input || (cursor !== null && cState.input.indexOf('\n', cursor) < 0)
if (atEnd || cState.historyIdx !== null) {
if (noLineBelow || cState.historyIdx !== null) {
cycleQueue(-1) || cycleHistory(1)
return