From 26977b370ecd77e44503c8de1a4e2fb92d547adb Mon Sep 17 00:00:00 2001
From: Daniel Imms <daimms@microsoft.com>
Date: Sun, 6 Aug 2017 13:47:03 -0700
Subject: [PATCH] Fix crash on negative tab stop width

Fixes #851
---
 src/Terminal.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Terminal.ts b/src/Terminal.ts
index cd44e7fb76..d410f51f6e 100644
--- a/src/Terminal.ts
+++ b/src/Terminal.ts
@@ -438,6 +438,12 @@ export class Terminal extends EventEmitter implements ITerminal, IInputHandlingT
       throw new Error('No option with key "' + key + '"');
     }
     switch (key) {
+      case 'tabStopWidth':
+        if (value < 1) {
+          console.warn(`tabStopWidth cannot be less than 1, value: ${value}`);
+          return;
+        }
+        break;
       case 'scrollback':
         if (value < this.rows) {
           let msg = 'Setting the scrollback value less than the number of rows ';