pkg go/printer, type Mode uint
pkg go/scanner, const ScanComments Mode
pkg go/scanner, func PrintError(io.Writer, error)
pkg go/scanner, method (*ErrorList) Add(token.Position, string)
pkg go/scanner, method (*ErrorList) RemoveMultiples()
pkg go/scanner, method (*ErrorList) Reset()
pkg go/scanner, method (*Scanner) Init(*token.File, []uint8, ErrorHandler, Mode)
pkg go/scanner, method (*Scanner) Scan() (token.Pos, token.Token, string)