# File lib/Getopt/Declare2.rb, line 531
      def found_requires
        expr = @requires.gsub(/((?:&&|\|\|)?\s*(?:[!(]\s*)*)([^ \t\n|&\)]+)/x,
                              '\1_FOUND_[\'\2\']')
      
        if !valid_syntax?( expr )
          raise "Error: bad condition in [requires: #{original}]\n"
        end
        expr
      end