# File lib/rspec/core/configuration_options.rb, line 62
      def parse_options
        @options = begin
                     options_to_merge = []
                     if custom_options_file
                       options_to_merge << custom_options
                     else
                       options_to_merge << global_options
                       options_to_merge << local_options
                     end
                     options_to_merge << command_line_options
                     options_to_merge << env_options

                     options_to_merge.inject do |merged, options|
                       merged.merge(options)
                     end
                   end
      end