type go/scanner.Mode

4 uses

	go/scanner (current package)
		scanner.go#L35: 	mode Mode         // scanning mode
		scanner.go#L102: type Mode uint
		scanner.go#L105: 	ScanComments    Mode = 1 << iota // return comments as COMMENT tokens
		scanner.go#L123: func (s *Scanner) Init(file *token.File, src []byte, err ErrorHandler, mode Mode) {