class Rails::Plugin

def self.all(list, paths)
  plugins = []
  paths.each do |path|
    Dir["#{path}/*"].each do |plugin_path|
      plugin = new(plugin_path)
      next unless list.include?(plugin.name) || list.include?(:all)
      plugins << plugin
    end
  end
  plugins.sort_by do |p|
    [list.index(p.name) || list.index(:all), p.name.to_s]
  end
end