Display global flags in subcommand

[xeals]

Is it possible to display higher-level flags in a subcommand?

e.g., given:

app := &cli.App{
  Flags: []cli.Flag{
    cli.BoolFlag{
      Name: "verbose, v",
      Usage: "be LOUD",
    },
  },
  Commands: []cli.Command{
    cli.Command{
      Name: "status",
    },
  },
}

Is it possible for verbose to be displayed in status's help command without redefining the flag?

[nasu]

GlobalXXX?

[genieplus]

I run into the same issue. I was expecting to see the option --verbose when the help of the subcommand status is printed. Something like:

$ go run main.go status -h
NAME:
   main status -

USAGE:
   main [global options] status [command options] [arguments...]

OPTIONS:
   --help, -h  show help (default: false)

GLOBAL OPTIONS:
   --verbose      be LOUD (default: false)

Just to be clear, it is not a question of defining a global flag as suggested in the previous comment. It is about the printed help.

[coilysiren]

Mostly for bookkeeping, I want to mention that this is conceptually related to my desire to expand global flags support for v3 #833

[coilysiren]

This feature is now in review, @urfave/cli please add a 👍 or 👎 to the top post if you're in favor or against this feature being added!

[stale]

This issue or PR has been automatically marked as stale because it has not had recent activity. Please add a comment bumping this if you're still interested in it's resolution! Thanks for your help, please let us know if you need anything else.

[coilysiren]

I'm not sure if this is still relevant as of v2?

[stale]

This issue or PR has been bumped and is no longer marked as stale! Feel free to bump it again in the future, if it's still relevant.

[bandesz]

This issue is still present in v2.

[coilysiren]

Thanks for the confirmation! 👍

[bandesz]

I did a simple hack to always show the app global flags by overriding the cli.HelpPrinterCustom function:

globalOptionsTemplate := `{{if .VisibleFlags}}GLOBAL OPTIONS:
   {{range $index, $option := .VisibleFlags}}{{if $index}}
   {{end}}{{$option}}{{end}}
{{end}}
`

app := &cli.App {...}

origHelpPrinterCustom := cli.HelpPrinterCustom
defer func() {
  cli.HelpPrinterCustom = origHelpPrinterCustom
}()
cli.HelpPrinterCustom = func(out io.Writer, templ string, data interface{}, customFuncs map[string]interface{}) {
	origHelpPrinterCustom(out, templ, data, customFuncs)
	if data != app {
		origHelpPrinterCustom(app.Writer, globalOptionsTemplate, app, nil)
	}
}
if err := app.Run(os.Args); err != nil {
  //...
}

[stale]

This issue or PR has been automatically marked as stale because it has not had recent activity. Please add a comment bumping this if you're still interested in it's resolution! Thanks for your help, please let us know if you need anything else.

[stale]

Closing this as it has become stale.

[Madhur1997]

I had a similar requirement. Is there any progress on this?
I can get a PR if this is still open.

[factoidforrest]

It would be better if the global flags worked after a subcommand, optionally. In our tool it makes much more sense to do
tool subcommand --flag
than
tool --flag subcommand