class RSpec::Core::CommandLine

def initialize(args_or_options)
  if RSpec::Core::ConfigurationOptions === args_or_options
    @options = args_or_options
  else
    @options = RSpec::Core::ConfigurationOptions.new(args_or_options)
    @options.parse_options
  end
  @options.configure(configuration)
  configuration.require_files_to_run
  configuration.configure_mock_framework
end