class RSpec::Core::ConfigurationOptions

def parse_options
  @options = begin
               command_line_options = parse_command_line_options
               local_options        = parse_local_options(command_line_options)
               global_options       = parse_global_options
               env_options          = parse_env_options
               [global_options, local_options, command_line_options, env_options].inject do |merged, options|
                 merged.merge(options)
               end
             end
end