From 1dfdda6e97521faa436d1001719c868b508f2d9c Mon Sep 17 00:00:00 2001
From: Matthias Bussonnier <bussonniermatthias@gmail.com>
Date: Tue, 23 Dec 2014 11:07:43 +0100
Subject: [PATCH] binary or is rare in JS

---
 IPython/html/static/notebook/js/outputarea.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/IPython/html/static/notebook/js/outputarea.js b/IPython/html/static/notebook/js/outputarea.js
index 4275d0245..d1d194ed6 100644
--- a/IPython/html/static/notebook/js/outputarea.js
+++ b/IPython/html/static/notebook/js/outputarea.js
@@ -175,7 +175,7 @@ define([
      *
      **/
     OutputArea.prototype.scroll_if_long = function (lines) {
-        var n = lines | OutputArea.minimum_scroll_threshold;
+        var n = lines || OutputArea.minimum_scroll_threshold;
         if(n <= 0){
             return;
         }