const fmt.sign

4 uses

	fmt (current package)
		scan.go#L563: 	sign              = "+-"
		scan.go#L651: 		s.accept(sign) // If there's a sign, it will be left in the token buffer.
		scan.go#L709: 	s.accept(sign)
		scan.go#L732: 		s.accept(sign)