wrap

# File lib/rdoc/ri/ri_formatter.rb, line 28
    def wrap(txt,  prefix=@indent, linelen=@width)
      return unless txt && !txt.empty?
      work = conv_markup(txt)
      textLen = linelen - prefix.length
      patt = Regexp.new("^(.{0,#{textLen}})[ \n]")
      next_prefix = prefix.tr("^ ", " ")

      res = []

      while work.length > textLen
        if work =~ patt
          res << $1
          work.slice!(0, $&.length)
        else
          res << work.slice!(0, textLen)
        end
      end
      res << work if work.length.nonzero?
      puts(prefix + res.join("\n" + next_prefix))
    end