anchor.diff:              {
                   Category = AttDefinition
                   Index = 0
  -                File = "example.texton"
  +                File = exampleFileName
                   StartLine = firstLine
                   EndLine = lastLine
                   Lines = attDefinitionLines
  
positive.code:                         {
                              TopLevelFileLineNumber = 1
                              CurrentFileLineNumber = 1
                              CurrentFile = "example.texton"
                              Contents =
                                  Error {
                                      StartLocation = 1
  
negative.code:             {
                  Category = PreprocessorError
                  Index = 0
                  File = exampleFileName
                  StartLine = 1
                  EndLine = 1
                  Lines =
  