From caf5fcebe3cb7aa9d6c902f6a1867fc8334ea608 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luis=20Javier=20Merino=20Mor=C3=A1n?= <ninjalj@gmail.com>
Date: Thu, 30 Sep 2021 20:12:25 +0200
Subject: [PATCH] Insert Lines should be a noop if outside margins

From esctest:
ICHTests.test_ICH_ScrollOffRightMarginInScrollRegion
---
 src/Screen.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Screen.cpp b/src/Screen.cpp
index 7661aebc..89506598 100644
--- a/src/Screen.cpp
+++ b/src/Screen.cpp
@@ -320,6 +320,9 @@ void Screen::deleteLines(int n)
 
 void Screen::insertLines(int n)
 {
+    if (_cuY < _topMargin) {
+        return;
+    }
     if (n < 1) {
         n = 1; // Default
     }