# File lib/main/parameter.rb, line 436
      def parse_keywords argv, params=nil
        params ||= select{|p| p.type == :keyword}

        replacements = {}

        params.each do |p|
          names = p.names
          name = names.sort_by{|n| [n.size,n]}.last

          kre = %r/^\s*(#{ names.join '|' })\s*=/
          opt = "--#{ name }"
          i = -1 

          argv.each_with_index do |a, idx|
            i += 1
            b = argv[idx + 1]
            s = "#{ a }#{ b }"
            m, key, *ignored = kre.match(s).to_a
            if m
              replacements[i] ||= a.gsub %r/^\s*#{ key }/, opt
              next
            end
??
          end
        end

        replacements.each do |i, r|
          argv[i] = r
        end

        parse_options argv, params
      end