When a user calls my app with no arguments, I'd like to show the usage banner

[variousauthors]

Hi

After perusing the source for a while I've decided to call this an issue. When a user calls my app with no arguments, I'd like my app to behave as though it had been called with --help. I'm not sure how to accomplish this within the framework you've provided.

Thanks,

z.

[davetron5000]

You should be able to use the arg method in your binfile, e.g.

main do |my,args|
  # ... whatever
end

arg :first_arg, "The first arg"
arg :second_arg, :optional, "the second arg"

go!

Methadone should bomb out if the first arg is omitted (and, handily, you can code your main block relying on it being non-nil)

Another option is to use the method help_now! to do this: http://davetron5000.github.com/methadone/rdoc/classes/Methadone/ExitNow.html#method-i-help_now-21

Basically, you can check for no arguments:

main do |my,args|
  help_now!("you must supply an argument") if my.nil?
end

This will raise an exception that Methadone interprets as "something went wrong and the user needs to see the command line help".