clearOptions: Don't remove already selected items

Author: andrey-lizunov

CHANGELOG.md

@@ -1,3 +1,4 @@
+* Fixed bug making `clearOptions` function. Now it doesn't remove already selected options. (thanks @caseymct - #1079)
 * Fixed bug making `allowEmptyOption: true` useless (thanks @mcavalletto - #739)
 * Functions in option `render` can now return a DOM node in addition to
   text. (#617)

src/selectize.js

@@ -1336,10 +1336,15 @@ $.extend(Selectize.prototype, {
 		self.loadedSearches = {};
 		self.userOptions = {};
 		self.renderCache = {};
-		self.options = self.sifter.items = {};
+		var options = self.options;
+		$.each(self.options, function(key, value) {
+			if(self.items.indexOf(key) == -1) {
+				delete options[key];
+			}
+		});
+		self.options = self.sifter.items = options;
 		self.lastQuery = null;
 		self.trigger('option_clear');
-		self.clear();
 	},
 
 	/**