'MarkFlagsRequiredTogether' does not work as intended. Am I wrong?

[haung921209]

cmd
ㄴroot.go
ㄴtest
    ㄴcmd.go
    ㄴtest_cmd.go
    ㄴtest_sub.go

// root.go
...
func init() {
	RootCmd.PersistentFlags().StringVar(&profile, "profile", "default", "input dev profile, if needed")
...
	RootCmd.AddCommand(test.GetCommands()...)
}

// cmd.go
var commands []*cobra.Command

func addCommand(command *cobra.Command) {
	commands = append(commands, command)
}

func GetCommands() []*cobra.Command {
	return commands
}

// test.go

var (
	path           string
	testCmd      = &cobra.Command{
		Use:   "test",
		Short: "testCmd",
		Long:  "Test Command",
	}
)

func init() {
	testCmd.PersistentFlags().StringVar(&path, "path", "", "Path to mount")
	addCommand(testCmd)
}

//test_sub.go
var testSubCmd = &cobra.Command{
	Use:   "sub",
	Short: "test.testSubCmd",
	Long:  "Test Job",
	Run: func(cmd *cobra.Command, args []string) {
	},
}

func init() {
	testSubCmd.MarkFlagsRequiredTogether("path")
	testCmd.AddCommand(testSubCmd)
}

After writing this, I thought "path" would only work to require when running testSubCmd. However, I was able to see the error that "path" was required when requesting another command (for example, a command of another package implemented in the same way). (This was not only true for 'MarkFlagsRequiredTogether' but also for 'MarkFlagRequired' and so on.)
In this case, is there a way to resolve it in cobra?

[marckhouzam]

This is probably because you have declared --path as a persistent flag: testCmd.PersistentFlags().StringVar(&path, "path", "", "Path to mount"). A persistent flag applies to the command and all its sub-commands.
You can instead try: testCmd.Flags().StringVar(&path, "path", "", "Path to mount")