From 35d26f1d271b226d03e37faf4628e22ca6899f55 Mon Sep 17 00:00:00 2001
From: irokas <akasidiari@inf.uth.gr>
Date: Sun, 2 Jul 2017 14:22:24 +0300
Subject: [PATCH] Fix issue with small scrollback value.

Closes #506
---
 src/xterm.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/xterm.js b/src/xterm.js
index 743ae7c..f81085e 100644
--- a/src/xterm.js
+++ b/src/xterm.js
@@ -419,6 +419,15 @@ Terminal.prototype.setOption = function(key, value) {
   }
   switch (key) {
     case 'scrollback':
+      if (value < this.rows) {
+        let msg = 'Setting the scrollback value less than the number of rows ';
+
+        msg += `(${this.rows}) is not allowed.`;
+
+        console.warn(msg);
+        return false;
+      }
+
       if (this.options[key] !== value) {
         if (this.lines.length > value) {
           const amountToTrim = this.lines.length - value;