user/src/com/google/gwt/i18n/I18N.gwt.xml

<!--                                                                        -->
<!-- Copyright 2006 Google Inc. All Rights Reserved.                        -->
<!-- Internationalization support.                                          -->
<!--                                                                        -->
<module>

	<!-- Browser-sensitive code should use the 'locale' client property. -->
	<!-- 'default' is always defined.                                    -->
	<define-property name="locale" values="default" />

	<property-provider name="locale">
		<![CDATA[
		try {
          var locale;
          
          //Look for the locale as a url argument
          if(locale==null) {
            var args = parent.location.search;
            var startLang = args.indexOf("locale");
            if(startLang>=0){
                var language = args.substring(startLang);
                var begin = language.indexOf("=") + 1;
                var end = language.indexOf("&");
                if (end == -1) {
                    end = language.length;
                }
                locale = language.substring(begin, end);
            }
          }      
          if(locale == null){  
           //Look for the locale on the web page
            locale = parent.__gwt_getMetaProperty("locale")   
          }
           
          if(locale == null){
            return "default";
          }
           
          while(!parent.__gwt_isKnownPropertyValue(window, "locale",  locale)){
            var lastIndex = locale.lastIndexOf("_");
            if(lastIndex == -1){
          	  locale = "default";
              break;
            } else{
              locale = locale.substring(0,lastIndex);
            }
          }
          return locale;
        } catch(e){
          $wnd.alert("Unexpected exception in locale creator, using default: " + e);
          return "default";
        }
		]]>
	</property-provider>

	<generate-with class="com.google.gwt.i18n.rebind.LocalizableGenerator">
		<when-type-assignable class="com.google.gwt.i18n.client.Localizable" />
	</generate-with>
</module>