# File lib/racc/debugflags.rb, line 15
    def DebugFlags.parse_option_string(s)
      parse = rule = token = state = la = prec = conf = false
      s.split(//).each do |ch|
        case ch
        when 'p' then parse = true
        when 'r' then rule = true
        when 't' then token = true
        when 's' then state = true
        when 'l' then la = true
        when 'c' then prec = true
        when 'o' then conf = true
        else
          raise "unknown debug flag char: #{ch.inspect}"
        end
      end
      new(parse, rule, token, state, la, prec, conf)
    end