class Tilt::Redcarpet2Template

def prepare
  # try to support the same aliases
  Redcarpet1Template::ALIAS.each do |opt, aka|
    next if options.key? opt or not options.key? aka
    options[opt] = options.delete(aka)
  end
  # only raise an exception if someone is trying to enable :escape_html
  options.delete(:escape_html) unless options[:escape_html]
  @engine = ::Redcarpet::Markdown.new(generate_renderer, options)
  @output = nil
end