Merge branch 'prevent_dupes' into 2013-01-09-fixes

src/jquery.uls.data.utils.js

@@ -220,7 +220,6 @@
 		return $.uls.data.getLanguagesByScriptGroupInRegions( [ region ] );
 	};
 
-
 	/**
 	 * Returns an associative array of all languages,
 	 * grouped by script group.
@@ -237,23 +236,20 @@
 	 */
 	$.uls.data.getLanguagesByScriptGroup = function ( languages ) {
 		var languagesByScriptGroup = {},
-			scriptGroup,
-			language,
-			langScriptGroup;
+			language, codeToAdd, langScriptGroup;
 
-		for ( scriptGroup in $.uls.data.scriptgroups ) {
-			for ( language in languages ) {
-				langScriptGroup = $.uls.data.getScriptGroupOfLanguage( language );
+		for ( language in languages ) {
+			codeToAdd = $.uls.data.isRedirect( language ) || language;
 
-				if ( langScriptGroup !== scriptGroup ) {
-					continue;
-				}
+			langScriptGroup = $.uls.data.getScriptGroupOfLanguage( codeToAdd );
 
-				if ( !languagesByScriptGroup[scriptGroup] ) {
-					languagesByScriptGroup[scriptGroup] = [];
-				}
+			if ( !languagesByScriptGroup[langScriptGroup] ) {
+				languagesByScriptGroup[langScriptGroup] = [];
+			}
 
-				languagesByScriptGroup[scriptGroup].push( language );
+			// Prevent duplicate adding of redirects
+			if ( $.inArray( codeToAdd, languagesByScriptGroup[langScriptGroup] ) === -1 ) {
+				languagesByScriptGroup[langScriptGroup].push( codeToAdd );
 			}
 		}
 

src/jquery.uls.regionfilter.js

@@ -80,10 +80,17 @@
 				// Get the languages grouped by script group
 				var languagesByScriptGroup = $.uls.data.getLanguagesByScriptGroup( this.options.languages );
 
-				for ( var scriptGroup in languagesByScriptGroup ) {
+				// Make sure that we go by the original order
+				// of script groups
+				for ( var scriptGroup in $.uls.data.scriptgroups ) {
 					// Get the languages for the script group
 					var languages = languagesByScriptGroup[scriptGroup];
 
+					// It's possible that some script groups are missing
+					if ( !languages ) {
+						continue;
+					}
+
 					// Sort it based on autonym
 					languages.sort( $.uls.data.sortByAutonym );