From c7257ae198ba136ebec55b9cfae760f9e89c4e9a Mon Sep 17 00:00:00 2001
From: Bogdan Mustiata <bogdan.mustiata@gmail.com>
Date: Tue, 3 Mar 2015 14:53:15 +0100
Subject: [PATCH] Don't join class names when removing classes after additions.

---
 Sortable.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Sortable.js b/Sortable.js
index a3cb20e..e7bb2fe 100644
--- a/Sortable.js
+++ b/Sortable.js
@@ -896,7 +896,10 @@
 				el.classList[state ? 'add' : 'remove'](name);
 			}
 			else {
-				var className = (' ' + el.className + ' ').replace(/\s+/g, ' ').replace(' ' + name + ' ', '');
+				var className = (' ' + el.className + ' ')
+					.replace(/\s+/g, ' ')
+					.replace(' ' + name + ' ', ' ')
+					.replace(/  /, ' ');
 				el.className = className + (state ? ' ' + name : '');
 			}
 		}