How to print command helpscreen

[unera]

From time to time I want to show an error and then command helpscreen.

if args.Len() < 3 {
   fmt.Printf("You must choose at least 3 files!\")
   
  // --- the place 
   
   return cli.Exit("some text", 3)
}

How can I print the same screen as prints ./program help or ./program module help?

[dearchap]

@unera Depending on whether the command is a root command or is a subcommand you could use one of the following
ShowAppHelpAndExit or ShowSubcommandHelpAndExit

[unera]

@dearchap
thanks, that works fine

But I have another question

I have an application that can have options at levels,

example:

foo [global opts] command [command opts] subcommand [subcommand opts]

But when I call ShowSubcommandHelpAndExit, it showes helpscreen that contains only description

foo command [command options]

Is there a way to show global options, too at the helpscreen?
Or at least note about they are exists and full list can be found at foo help screen?

[dearchap]

@unera You can try using

ShowAppHelp(rootCommand)