anchor.diff:          |> Seq.map wixFile
           |> toLines
   
  +    dirCount <- dirCount + 1
       let compo =
         if files = "" then "" else
  -      sprintf "<Component Id=\"%s\" Guid=\"%s\">\r\n%s\r\n</Component>\r\n" directoryInfo.Name (Guid.NewGuid().ToString()) files
  +      sprintf "<Component Id=\"ci_%d\" Guid=\"%s\">\r\n%s\r\n</Component>\r\n" dirCount (Guid.NewGuid().ToString()) files
   
       if asSubDir then
  -        sprintf "<Directory Id=\"%s\" Name=\"%s\">\r\n%s%s\r\n</Directory>\r\n" directoryInfo.Name directoryInfo.Name dirs compo
  +        sprintf "<Directory Id=\"di_%d\" Name=\"%s\">\r\n%s%s\r\n</Directory>\r\n" dirCount directoryInfo.Name dirs compo
       else
           sprintf "%s%s" dirs compo
   
  
positive.code:     files
        |> Seq.map (fileInfo >> wixFile)
        |> toLines
  
  /// Creates recursive WiX directory and file tags from the given DirectoryInfo
  let rec wixDir fileFilter asSubDir (directoryInfo:DirectoryInfo) =
  
negative.code: open System.IO
  
  let mutable internal fileCount = 0
  let mutable internal dirCount = 0
  
  /// Creates a WiX File tag from the given FileInfo
  let wixFile (fileInfo:FileInfo) =
  