# File lib/differ/diff.rb, line 34
    def delete(*str)
      return if str.empty?
      if @raw.last.is_a? Change
        change = @raw.pop
        if change.insert? && @raw.last
          @raw.last << sep if change.insert.sub!(/^#{Regexp.quote(sep)}/, '')
        end
        change.delete << sep if change.delete?
      else
        change = Change.new(:delete => @raw.empty? ? '' : sep)
      end

      @raw << change
      @raw.last.delete << str.join(sep)
    end