From 628de8a1f48a720dc70f14a84d77afaee15e2ea0 Mon Sep 17 00:00:00 2001
From: Mitar <mitar.git@tnode.com>
Date: Sat, 15 Feb 2014 03:48:18 -0800
Subject: [PATCH] Fix for bind compatibility implementation (polyfill).

Previously, reconstruction of arguments was incorrect if arguments contained
arrays. Arrays were added to arguments as their elements and not as a whole
array. It is enough to simply pass whole array to concat and it will be (only
one level deep) added to arguments.

In addition, we call slice on arguments for maximum compatibility (it is used
in Underscore.js library, with which I was comparing implementations while
debugging).
---
 web/compatibility.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/web/compatibility.js b/web/compatibility.js
index 433e617af593d..7253d8d591f47 100644
--- a/web/compatibility.js
+++ b/web/compatibility.js
@@ -306,7 +306,7 @@ if (typeof PDFJS === 'undefined') {
   Function.prototype.bind = function functionPrototypeBind(obj) {
     var fn = this, headArgs = Array.prototype.slice.call(arguments, 1);
     var bound = function functionPrototypeBindBound() {
-      var args = Array.prototype.concat.apply(headArgs, arguments);
+      var args = headArgs.concat(Array.prototype.slice.call(arguments));
       return fn.apply(obj, args);
     };
     return bound;