Bug in PhraseQuery,TermQuery ?

[digy digy]

Hi all,

I have an application searching from multiple indices using "MultiSearcher".
When i type the search criterion twice(like "search search"), i get an
exception in TermQuery.cs.
TermQuery.cs -> ExtractTerms
"Item has already been added. Key in dictionary: 'Text:search'  Key
being added: 'Text:search' "

I prepared a sample code to regenerate the error condition.

//Sample:-------------------------------------

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using Lucene.Net.Search;
using Lucene.Net.Documents;
using Lucene.Net.Index;
using Lucene.Net.QueryParsers;
using Lucene.Net.Highlight;

namespace LuceneTest
{
   public partial class Form1 : Form
   {
       public Form1()
       {
           InitializeComponent();
       }

       private void button1_Click(object sender, EventArgs e)
       {
           CreateIndex("Index1");
           Search("Index1","search search");
       }

       void CreateIndex(string Path)
       {
           IndexWriter wr = new IndexWriter(Path, new
Lucene.Net.Analysis.Standard.StandardAnalyzer(), true);

           Document doc = new Document();
           Field f = new Field("Text", "This is a dummy text",
Field.Store.YES, Field.Index.TOKENIZED);
           doc.Add(f);
           wr.AddDocument(doc);

           wr.Close();
       }

       private void Search(string Path,string TextToSearch)
       {
           IndexSearcher searcher1     = new IndexSearcher(Path);
           MultiSearcher multiSearcher = new MultiSearcher(new
Searchable[] { searcher1 });

           QueryParser queryParser = new QueryParser("Text", new
Lucene.Net.Analysis.Standard.StandardAnalyzer());
           queryParser.SetDefaultOperator(QueryParser.Operator.AND);
           Query query = queryParser.Parse(TextToSearch);
           RangeFilter dummyFilter = new RangeFilter("Text", "a",
"z", true, true);
           //OR
           //QueryFilter dummyFilter = new QueryFilter(query);

           TopDocs td = multiSearcher.Search(query,dummyFilter,100);
           MessageBox.Show(td.totalHits.ToString() + " result(s) found.");
       }

   }
}
//--------------------------------------------


Same bug exists also in PhraseQuery(ExtractTerms) when using  FuzzySearch.

Thanks.
----
DIGY