func flag.Lookup

3 uses

	flag (current package)
		flag.go#L489: func Lookup(name string) *Flag {

	gotest.tools/v3/internal/source
		update.go#L23: 	return flag.Lookup("update").Value.(flag.Getter).Get().(bool)
		update.go#L31: 	if f := flag.Lookup("update"); f != nil {