const go/scanner.ScanComments

4 uses

	go/scanner (current package)
		scanner.go#L124: 	ScanComments    Mode = 1 << iota // return comments as COMMENT tokens
		scanner.go#L928: 				if s.mode&ScanComments == 0 {

	go/build
		read.go#L379: 		sc.Init(file, r.buf, nil, scanner.ScanComments)

	go/parser
		parser.go#L82: 	p.scanner.Init(p.file, src, eh, scanner.ScanComments)