support "h" custom argument about argparse HOT 3 OPEN

With SetHelp from #50, we can remove the short name for help with:

parser.SetHelp("", "help")
host := parser.String("h", "host", &argparse.Options{Required: true, Help: "Host"})

from argparse.

That would be great. I realized that this was not a very good design choice. However this was already implemented this way.

I think this can be achieved without breaking compatibility for existing code by adding a method to re-define help argument (or perhaps entirely unset it depending on method arguments). Then this method would need to be called anywhere before setting new -h argument.

PR for this change is welcome.

from argparse.

@jossef FWIW, there is DisableHelp() method that removes use of -h|--help as automagic help arguments. This was added previously for a similar use, but I have not used it myself, so not sure if that works for your use case.

from argparse.