From 4edbd507e5717669ebe57c20657053fa9bae06c9 Mon Sep 17 00:00:00 2001
From: npezza93 <npezza93@gmail.com>
Date: Wed, 9 May 2018 19:35:02 -0400
Subject: [PATCH] Check if endCol and endRow are present before handling an alt
 click

---
 src/handlers/AltClickHandler.ts | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/handlers/AltClickHandler.ts b/src/handlers/AltClickHandler.ts
index 6b980fe6..7f2e4f05 100644
--- a/src/handlers/AltClickHandler.ts
+++ b/src/handlers/AltClickHandler.ts
@@ -38,20 +38,18 @@ export class AltClickHandler {
       false
     );
 
-    if (!coordinates) {
-      return null;
+    if (coordinates) {
+      [this._endCol, this._endRow] = coordinates.map((coordinate: number) => {
+        return coordinate - 1;
+      });
     }
-
-    [this._endCol, this._endRow] = coordinates.map((coordinate: number) => {
-      return coordinate - 1;
-    });
   }
 
   /**
    * Writes the escape sequences of arrows to the terminal
    */
   public move(): void {
-    if (this._mouseEvent.altKey) {
+    if (this._mouseEvent.altKey && this._endCol !== undefined && this._endRow !== undefined) {
       this._terminal.send(this._arrowSequences());
     }
   }