def determine_markdown_renderer
      @markdown = if installed?('github/markdown')
        GitHubWrapper.new(@content)
      elsif installed?('redcarpet/compat')
        Markdown.new(@content, :fenced_code, :safelink, :autolink)
      elsif installed?('redcarpet')
        RedcarpetCompat.new(@content)
      elsif installed?('rdiscount')
        RDiscount.new(@content)
      elsif installed?('maruku')
        Maruku.new(@content)
      elsif installed?('kramdown')
        Kramdown::Document.new(@content)
      elsif installed?('bluecloth')
        BlueCloth.new(@content)
      end
    end
def determine_markdown_renderer
      @markdown = if installed?('github/markdown')
        GitHubWrapper.new(@content)
      elsif installed?('redcarpet/compat')
        Markdown.new(@content, :fenced_code, :safelink, :autolink)
      elsif installed?('redcarpet')
        RedcarpetCompat.new(@content)
      elsif installed?('rdiscount')
        RDiscount.new(@content)
      elsif installed?('maruku')
        Maruku.new(@content)
      elsif installed?('kramdown')
        Kramdown::Document.new(@content)
      elsif installed?('bluecloth')
        BlueCloth.new(@content)
      end
    end
Create a new compatibility instance.

 content - The Markdown content to render.