Function condense

2.0.3/2.0.3.js:2409–2428

( unmatched, map, filter, context, xml )

        }

        function condense( unmatched, map, filter, context, xml ) {
            var elem,
                newUnmatched = [],
                i = 0,
                len = unmatched.length,
                mapped = map != null;

            for ( ; i < len; i++ ) {
                if ( (elem = unmatched[i]) ) {
                    if ( !filter || filter( elem, context, xml ) ) {
                        newUnmatched.push( elem );
                        if ( mapped ) {
                            map.push( i );
                        }
                    }
                }
            }

            return newUnmatched;
        }

        function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
            if ( postFilter && !postFilter[ expando ] ) {