shumengya/sproutclaw
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix(tui): wordWrapLine overflow with wide chars at wrap boundary (#2082)

Browse Source
This commit is contained in:
xu0o0
2026-03-13 07:46:37 +08:00
committed by GitHub
parent 5641693c4e
commit 48e4bd94ef
2 changed files with 26 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
packages/tui/src/components/editor.ts
View File

@@ -58,13 +58,18 @@ export function wordWrapLine(line: string, maxWidth: number): TextChunk[] {
// Overflow check before advancing.
if (currentWidth + gWidth > maxWidth) {
if (wrapOppIndex >= 0) {
// Backtrack to last wrap opportunity.
if (wrapOppIndex >= 0 && currentWidth - wrapOppWidth + gWidth <= maxWidth) {
// Backtrack to last wrap opportunity (the remaining content
// plus the current grapheme still fits within maxWidth).
chunks.push({ text: line.slice(chunkStart, wrapOppIndex), startIndex: chunkStart, endIndex: wrapOppIndex });
chunkStart = wrapOppIndex;
currentWidth -= wrapOppWidth;
} else if (chunkStart < charIndex) {
// No wrap opportunity: force-break at current position.
// No viable wrap opportunity: force-break at current position.
// This also handles the case where backtracking to a word
// boundary wouldn't help because the remaining content plus
// the current grapheme (e.g. a wide character) still exceeds
// maxWidth.
chunks.push({ text: line.slice(chunkStart, charIndex), startIndex: chunkStart, endIndex: charIndex });
chunkStart = charIndex;
currentWidth = 0;