code: def analyze(string, options = {})
        x = []
        @fst._analyze(string) do |a| 
          if options[:symbol_sequence]
            x << a.map { |s| s.match(/^<(.*)>$/) ? $1.to_sym : s }
          else
            x << a.join
          end
        end
        x
      end
docs: Analyses a string +string+. Returns an array of analysed
   strings if the string is accepted, or an empty array if not.
  
   ==== Options
   * +symbol_sequence+ - Return each analysis as a sequence of symbols.
     Multicharacter symbols will be strings on the form +<symbol>+.