Autolink all of the highlighted text at once

lib/gitlab/highlight.rb

@@ -70,21 +70,8 @@ module Gitlab
     end
     def autolink_strings(highlighted_text)
-      doc = Nokogiri::HTML::DocumentFragment.parse(highlighted_text)
-
-      # Files without highlighting have all text in `span.line`.
-      # Files with highlighting have strings and comments in `span`s with a
-      # `class` starting with `c` or `s`.
-      doc.xpath('.//span[@class="line" or starts-with(@class, "c") or starts-with(@class, "s")]/text()').each do |node|
-        content = node.to_html
-        html = Banzai.render(content, pipeline: :autolink, autolink_emails: true)
-
-        next if html == content
-
-        node.replace(html)
-      end
-
-      doc.to_html.html_safe
+      # TODO: Don't run pre-processing pipeline, because this may break the highlighting
+      Banzai.render(highlighted_text, pipeline: :autolink, autolink_emails: true).html_safe
     end
   end
 end