# File lib/guard/rspec/runner.rb, line 52
      def failure_exit_code_supported?
        @failure_exit_code_supported ||= begin
          cmd_parts = []
          cmd_parts << "bundle exec" if bundle_exec?
          cmd_parts << rspec_executable
          cmd_parts << "--help"
          `#{cmd_parts.join(' ')}`.include? "--failure-exit-code"
        end
      end