anchor.diff:      tw.Write(CodeFormatter.formatSourceString isFsiFile s config)
   
   [<EntryPoint>]
  -let main args =
  +let main _args =
       let recurse = ref false
       let force = ref false
       let profile = ref false
  
positive.code:         if inputFile <> outputFile then
              fileToFile inputFile outputFile config
          else
              let tempFile = Path.GetTempFileName()
              fileToFile inputFile tempFile config
              File.Delete(inputFile)
              File.Move(tempFile,inputFile)
  
      let processFolder inputFolder outputFolder =
          if not <| Directory.Exists(outputFolder) then
              Directory.CreateDirectory(outputFolder) |> ignore
          allFiles !recurse inputFolder
          |> Seq.iter (fun i ->     
              // s supposes to have form s1/suffix
              let suffix = i.Substring(inputFolder.Length + 1)
              let o =
  
negative.code:         eprintfn "Input path is missing."
          exit 1
      | Folder p1, Notknown -> processFolder p1 p1
      | File p1, Notknown -> processFile p1 p1 config
      | File p1, IO p2 ->
          processFile p1 p2 config
      | Folder p1, IO p2 -> processFolder p1 p2
  