class Diffy::SplitDiff

def split_left
  case @format
  when :color
    @diff.gsub(/\033\[32m\+(.*)\033\[0m\n/, '')
  when :html, :html_simple
    @diff.gsub(%r{\s+<li class="ins"><ins>(.*)</ins></li>}, '')
  when :text
    @diff.gsub(/^\+(.*)\n/, '')
  end
end