module Thor::Base::ClassMethods

def class_options_help(shell, groups={}) #:nodoc:
  # Group options by group
  class_options.each do |_, value|
    groups[value.group] ||= []
    groups[value.group] << value
  end
  # Deal with default group
  global_options = groups.delete(nil) || []
  print_options(shell, global_options)
  # Print all others
  groups.each do |group_name, options|
    print_options(shell, options, group_name)
  end
end