# File lib/buildr/java/packaging.rb, line 469
        def component_clone(component)
          file(path_to(component[:path], component[:artifact].to_s.pathmap('%f')) => component[:artifact]) do |task|
            mkpath task.to_s.pathmap('%d')
            cp component[:artifact].to_s, task.to_s
            Manifest.update_manifest(task) do |manifest|
              class_path = manifest.main['Class-Path'].to_s.split
              included_libs = class_path.map { |fn| fn.pathmap('%f') }
              Zip::ZipFile.foreach(task.to_s) do |entry|
                included_libs << entry.name.pathmap('%f') if entry.file? && entry.name =~ /^WEB-INF\/lib\/[^\/]+$/
              end
              # Include all other libraries in the classpath.
              class_path += libs_classpath(component).reject { |path| included_libs.include?(File.basename(path)) }
              manifest.main['Class-Path'] = class_path.join(' ')
            end
          end
        end