parse_args

# File lib/rexml/parsers/xpathparser.rb, line 653
      def parse_args( string )
        arguments = []
        ind = 0
        inquot = false
        inapos = false
        depth = 1
        begin
          case string[ind]
          when ""
            inquot = !inquot unless inapos
          when ''
            inapos = !inapos unless inquot
          else
            unless inquot or inapos
              case string[ind]
              when ((
                depth += 1
                if depth == 1
                  string = string[1..-1]
                  ind -= 1
                end
              when ))
                depth -= 1
                if depth == 0
                  s = string[0,ind].strip
                  arguments << s unless s == ""
                  string = string[ind+1..-1]
                end
              when ,,
                if depth == 1
                  s = string[0,ind].strip
                  arguments << s unless s == ""
                  string = string[ind+1..-1]
                  ind = -1 
                end
              end
            end
          end
          ind += 1
        end while depth > 0 and ind < string.length
        return nil unless depth==0
        [string,arguments]
      end