clearOptions: Don't remove already selected items

Author: andrey-lizunov

CHANGELOG.md

@@ -1,6 +1,10 @@
 <!-- Feel free to put either your handle and/or full name, according to
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+*  Fixed bug making `clearOptions` function. Now it doesn't remove already selected options.
+
+   *(thanks @caseymct - #1079)*
+
 *  New feature: allow to disable single options or complete optgroups
 
    *@zeitiger*

src/selectize.js

@@ -1366,10 +1366,15 @@ $.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();
 	},
 
 	/**