More enhancement optimizations:

- Modified buttonMarkup so that it checks options against undefined before calling jqmData(). This is necessary because false is a valid option.

- Modified listview so that it doesn't check for a data-counttheme unless it actually has a count item.

Author: jblas

js/jquery.mobile.buttonMarkup.js

@@ -13,13 +13,13 @@ $.fn.buttonMarkup = function( options ) {
 		var el = this.eq( i ),
 			e = el[ 0 ],
 			o = $.extend( {}, $.fn.buttonMarkup.defaults, {
-				icon:       options.icon       || el.jqmData( "icon" ),
-				iconpos:    options.iconpos    || el.jqmData( "iconpos" ),
-				theme:      options.theme      || el.jqmData( "theme" ),
-				inline:     options.inline     || el.jqmData( "inline" ),
-				shadow:     options.shadow     || el.jqmData( "shadow" ),
-				corners:    options.corners    || el.jqmData( "corners" ),
-				iconshadow: options.iconshadow || el.jqmData( "iconshadow" )
+				icon:       options.icon       !== undefined ? options.icon       : el.jqmData( "icon" ),
+				iconpos:    options.iconpos    !== undefined ? options.iconpos    : el.jqmData( "iconpos" ),
+				theme:      options.theme      !== undefined ? options.theme      : el.jqmData( "theme" ),
+				inline:     options.inline     !== undefined ? options.inline     : el.jqmData( "inline" ),
+				shadow:     options.shadow     !== undefined ? options.shadow     : el.jqmData( "shadow" ),
+				corners:    options.corners    !== undefined ? options.corners    : el.jqmData( "corners" ),
+				iconshadow: options.iconshadow !== undefined ? options.iconshadow : el.jqmData( "iconshadow" )
 			}, options ),
 
 			// Classes Defined

js/jquery.mobile.listview.js

@@ -39,8 +39,8 @@ $.widget( "mobile.listview", $.mobile.widget, {
 		var $countli = item.find( ".ui-li-count" );
 		if ( $countli.length ) {
 			item.addClass( "ui-li-has-count" );
+			$countli.addClass( "ui-btn-up-" + ( $list.jqmData( "counttheme" ) || this.options.countTheme ) + " ui-btn-corner-all" );
 		}
-		$countli.addClass( "ui-btn-up-" + ( $list.jqmData( "counttheme" ) || this.options.countTheme ) + " ui-btn-corner-all" );
 
 		// TODO class has to be defined in markup
 		item.find( "h1, h2, h3, h4, h5, h6" ).addClass( "ui-li-heading" ).end()