change_verbatim_blank_lines

# File lib/rdoc/markup/simple_markup/fragments.rb, line 208
    def change_verbatim_blank_lines
      frag_block = nil
      blank_count = 0
      @fragments.each_with_index do |frag, i|
        if frag_block.nil?
          frag_block = frag if Verbatim === frag
        else
          case frag
          when Verbatim
            blank_count.times { frag_block.add_text("\n") }
            blank_count = 0
            frag_block.add_text(frag.txt)
            @fragments[i] = nil    # remove out current fragment
          when BlankLine
            if frag_block
              blank_count += 1
              @fragments[i] = nil
            end
          else
            frag_block = nil
            blank_count = 0
          end
        end
      end
      @fragments.compact!
    end