# File lib/merb-core/server.rb, line 192
      def pid_files
        if Merb::Config[:pid_file]
          if Merb::Config[:cluster]
            ext = File.extname(Merb::Config[:pid_file])
            base = File.basename(Merb::Config[:pid_file], ext)
            dir = File.dirname(Merb::Config[:pid_file])
            Dir[dir / "#{base}.*#{ext}"]
          else
            [ Merb::Config[:pid_file] ]
          end
        else
          Dir[Merb.log_path / "merb.*.pid"]
        end
       end