Function addMatcher

documentation/javascript/application.js:5686–5693

( higher, deeper )

}

function addMatcher( higher, deeper ) {
	return higher ?
		function( elem ) {
			var result = deeper( elem );
			return result && higher( result === true ? elem : result );
		} :
		deeper;
}

// ["TAG", ">", "ID", " ", "CLASS"]
function matcherFromTokens( tokens, context, xml ) {