Avoid out-of-bounds indexing in the terminal

2026-07-22 04:34:06 +02:00
parent 775a4601c1
commit 9cca4f4bea
1 changed files with 3 additions and 1 deletions
@@ -316,7 +316,9 @@ func (tw *terminalWriter) processEscape(rb []rune) ([]rune, bool) {
 		tw.processFlush()
 		return rb[2:], true
 	case r == 'M':
-		tw.line--
+		if tw.line > tw.lineTop {
+			tw.line--
+		}
 		return rb[2:], true

 	case (r >= 0x30 && r <= 0x4F) || (r >= 0x51 && r <= 0x57) ||