class RSpec::Core::ConfigurationOptions

def drb_argv
  argv = []
  argv << "--color"        if options[:color_enabled]
  argv << "--profile"      if options[:profile_examples]
  argv << "--backtrace"    if options[:full_backtrace]
  argv << "--tty"          if options[:tty]
  argv << "--fail-fast"    if options[:fail_fast]
  argv << "--options"      << options[:custom_options_file]     if options[:custom_options_file]
  if options[:full_description]
    # The argument to --example is regexp-escaped before being stuffed
    # into a regexp when received for the first time (see OptionParser).
    # Hence, merely grabbing the source of this regexp will retain the
    # backslashes, so we must remove them.
    argv << "--example" << options[:full_description].source.delete('\\')
  end
  if options[:line_numbers]
    argv += options[:line_numbers].inject([]){|a,l| a << "--line_number" << l}
  end
  if options[:filter]
    options[:filter].each_pair do |k, v|
      argv << "--tag" << k.to_s
    end
  end
  if options[:exclusion_filter]
    options[:exclusion_filter].each_pair do |k, v|
      argv << "--tag" << "~#{k.to_s}"
    end
  end
  if options[:formatters]
    options[:formatters].each do |pair|
      argv << "--format" << pair[0]
      argv << "--out" << pair[1] if pair[1]
    end
  end
  (options[:libs] || []).each do |path|
    argv << "-I" << path
  end
  (options[:requires] || []).each do |path|
    argv << "--require" << path
  end
  argv + options[:files_or_directories_to_run]
end