title: Using SevenZipSharp to extract bzip2 file add a needless tar extension to file, and can't get right archive informations?
body: <p>Using following code to extracting a bzip2 file to a specified directory:</p>
  
  <pre><code>string[] archive_files = null;
  using (SevenZip.SevenZipExtractor extrator = new SevenZip.SevenZipExtractor(source_file));
  {
      extrator.ExtractArchive(dest_directory);
      archive_files = extrator.ArchiveFileNames.ToArray();
  }
  </code></pre>
  
  <p>, however I got a file in target directory which has .tar adds on it, the file is correct if I remove last extension. but archive files returns from extrator is "[no name]" instead of archive file name, It seems it doesn't get the archive file infos from the source file. Is these a bug, any ideas?</p>