From 3fee8fc7e63ee394b90da813a5a80362ab2b27b5 Mon Sep 17 00:00:00 2001
From: Kevin Brown <kbrown@rediker.com>
Date: Wed, 11 Jun 2014 20:06:41 -0400
Subject: [PATCH] Detect classes separated by multiple spaces

This detects classes separated by multiple spaces and will trim
extra spaces surrounding the class attribute.

This closes the following issue: https://github.com/ivaynberg/select2/issues/2358
---
 select2.js | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/select2.js b/select2.js
index 1803259a..2c308ccc 100644
--- a/select2.js
+++ b/select2.js
@@ -320,27 +320,34 @@ the specific language governing permissions and limitations under the Apache Lic
     function syncCssClasses(dest, src, adapter) {
         var classes, replacements = [], adapted;
 
-        classes = dest.attr("class");
+        classes = $.trim(dest.attr("class"));
+
         if (classes) {
             classes = '' + classes; // for IE which returns object
-            $(classes.split(" ")).each2(function() {
+
+            $(classes.split(/\s+/)).each2(function() {
                 if (this.indexOf("select2-") === 0) {
                     replacements.push(this);
                 }
             });
         }
-        classes = src.attr("class");
+
+        classes = $.trim(src.attr("class"));
+
         if (classes) {
             classes = '' + classes; // for IE which returns object
-            $(classes.split(" ")).each2(function() {
+
+            $(classes.split(/\s+/)).each2(function() {
                 if (this.indexOf("select2-") !== 0) {
                     adapted = adapter(this);
+
                     if (adapted) {
                         replacements.push(adapted);
                     }
                 }
             });
         }
+
         dest.attr("class", replacements.join(" "));
     }