Retrospring/app/services/shared_markers.rb

module SharedMarkers
  include ActionView::Helpers::TagHelper

  def autolink(link, _link_type)
    begin
      href = if ALLOWED_HOSTS_IN_MARKDOWN.include?(URI(link).host)
              link
            else
              linkfilter_path(url: link)
            end
      
      content_tag(:a, link, href: href, target: "_blank", rel: "nofollow")
    rescue
      link
    end
  end
end