# File formvalidator.rb, line 450
    def constraint_regexp_map
      return nil unless Hash === @profile[:constraint_regexp_map]
      @profile[:constraint_regexp_map].each do |re,constraint|
        re = Regexp.new(re)
        @form.keys.select {|key| key =~ re}.each do |match|
          unless @form[match].to_s.empty?
            do_constraint(match, [constraint].flatten) 
          end
        end
      end
    end