const bytes.opRead

5 uses

	bytes (current package)
		buffer.go#L35: 	opRead      readOp = -1 // Any other read operation.
		buffer.go#L331: 		b.lastRead = opRead
		buffer.go#L349: 		b.lastRead = opRead
		buffer.go#L364: 	b.lastRead = opRead
		buffer.go#L448: 	b.lastRead = opRead