Updating from upstream

Change-Id: I3acc149e5272914d10c879b08e284ef5aa1e2f7f

lib/jquery.ime/jquery.ime.js

@@ -729,6 +729,10 @@
 			autonym: 'беларуская',
 			inputmethods: [ 'be-transliteration', 'be-latin' ]
 		},
+		'be-tarask': {
+			autonym: 'беларуская (тарашкевіца)',
+			inputmethods: [ 'be-transliteration', 'be-latin' ]
+		},
 		'ber': {
 			autonym: 'ⵜⵉⴼⵉⵏⴰⵖ',
 			inputmethods: [ 'ber-tfng' ]
@@ -1422,6 +1426,7 @@
 
 	$.extend( $.ime.preferences, {
 		registry: {
+			isDirty: false,
 			language : 'en',
 			previousLanguages: [], // array of previous languages
 			imes: {
@@ -1430,11 +1435,18 @@
 		},
 
 		setLanguage: function ( language ) {
+			// Do nothing if there's no actual change
+			if ( language === this.registry.language ) {
+				return;
+			}
+
 			this.registry.language = language;
+			this.registry.isDirty = true;
 			if ( !this.registry.previousLanguages ) {
 				this.registry.previousLanguages = [];
 			}
-			//Add to the previous languages, but avoid duplicates.
+
+			// Add to the previous languages, but avoid duplicates.
 			if ( $.inArray( language, this.registry.previousLanguages ) === -1 ) {
 				this.registry.previousLanguages.push( language );
 			}
@@ -1453,13 +1465,20 @@
 			if ( !this.registry.imes ) {
 				this.registry.imes = {};
 			}
+
+			// Do nothing if there's no actual change
+			if ( inputMethod === this.registry.imes[this.registry.language] ) {
+				return;
+			}
+
 			this.registry.imes[this.getLanguage()] = inputMethod;
+			this.registry.isDirty = true;
 		},
 
 		// Return the last used or the default IM for language
 		getIM: function ( language ) {
 			if ( !this.registry.imes ) {
-				this.registry.imes= {};
+				this.registry.imes = {};
 			}
 			return this.registry.imes[language] || $.ime.languages[language].inputmethods[0];
 		},
@@ -1472,4 +1491,4 @@
 			// load registry from cookies or localstorage
 		}
 	} );
-}( jQuery ) );
+}( jQuery ) );