# File scripts/parsing-rules.rb, line 183
    def initialize(match, results={}, subst_rules={}, case_sens=false)
      super(match, results, case_sens)
      @subst_rules = Hash.new
      subst_rules.each do |f, old_new|
        if case_sens
          old_pat = Regexp.new(old_new[0])
        else
          old_pat = Regexp.new(old_new[0], Regexp::IGNORECASE)
        end
        new_str = old_new[1]
        @subst_rules[f] = old_pat, new_str
      end
    end