Wildcards with keyword analyser

gistfile1.cs

static void Main(string[] args)
{
	var dir = new RAMDirectory();            
	var analyzer = new KeywordAnalyzer();            

	var writer = new IndexWriter(dir, analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED);

	var fields = new[]
		{
			"MRS. SHABA", "MRS. SHABA", "MRS. SMITH",
			"HUGO SHABA", "MENTOS SHABA", "MENTOS SHABAX"
		};
	foreach (var field in fields)
	{
		var doc = new Document();
		doc.Add(new Field("Name", field, Field.Store.NO, Field.Index.ANALYZED_NO_NORMS));
		writer.AddDocument(doc);
	}
	writer.Close(true);

	var searcher = new IndexSearcher(dir, true);
	var termEnum = searcher.GetIndexReader().Terms();
	Console.WriteLine("Indexed Terms:");
	while (termEnum.Next())
	{
		var term = termEnum.Term();
		var freq = termEnum.DocFreq();
		Console.WriteLine("\t {0}:{1,-20} (Count = {2})", term.Field(), term.Text(), freq);
	}
	Console.WriteLine();

	var queryParser = new QueryParser(Version.LUCENE_29, "", analyzer);
	queryParser.SetLowercaseExpandedTerms(false);

	//have to escape ' ' <SPACE> characters
	var queries = new[] {"Name:MRS.*", "Name:MRS.\\ S*", "Name:MENTOS*"};

	foreach (var queryText in queries)
	{
		var query = queryParser.Parse(queryText);
		Console.WriteLine("Query Used \'{0}\' ({1})", query, query.GetType());
		
		if (query is PrefixQuery)
		{
			var prefixQuery = query as PrefixQuery;
			var prefix = prefixQuery.GetPrefix();
			Console.WriteLine("\tPrefix Query - {0} \"{1}\"", prefix.Field(), prefix.Text());
		}

		var timer = Stopwatch.StartNew();
		var result = searcher.Search(query, 10);
		timer.Stop();

		Console.WriteLine("Query took {0:0.00} ms, there were {1} total hits",
						  timer.ElapsedMilliseconds, result.totalHits);
		Console.WriteLine(String.Join(", ", result.scoreDocs.Select(x => new {DocId = x.doc, Score = x.score})));
		Console.WriteLine();
	}
}