yugui

require 'optparse'
class OptionParser
  def list_opts(prior_opts)
    opts = enum_for(:visit, :tap).map(&:list).flatten(1)
    prior_opts = opts.select{|opt| opt.long.any?{|name| prior_opts.include?(name)} }
    opts -= prior_opts

    simple_opts = opts.select{|opt| !opt.short.empty? && opt.arg.nil? }.sort_by{|x| x.short.sort.first}
    opts -= simple_opts

yugui

class Module
  def declare(decorator, *args)
    orig_method_added = method(:method_added)
    metaclass = (class << self; self end)
    defined_methods = []
    metaclass.send(:define_method, :method_added) do |name|
      orig_method_added.call(name)
      defined_methods << name
    end
    begin