Using ruby's OptionParser to parse sub-commands

Question

I\'d like to be able to use ruby\'s OptionParser to parse sub-commands of the form

COMMAND [GLOBAL FLAGS] [SUB-COMMAND [SUB-COMMAND FLAGS]]

lik

Answer 1

It looks like the OptionParser syntax has changed some. I had to use the following so that the arguments array had all of the options not parsed by the opts object.

begin
  opts.order!(arguments)
rescue OptionParser::InvalidOption => io
  # Prepend the invalid option onto the arguments array
  arguments = io.recover(arguments)
rescue => e
  raise "Argument parsing failed: #{e.to_s()}"
end