Merge branch 'fix-label-color' into 'master'

Parse GFM references after sanitizing

Parse GFM references - labels, issues, MRs, etc. - after calling the HTML Pipeline `SanitizationFilter` so that we can use non-whitelisted attributes like `style`.  See #2188.

See merge request !1745

lib/gitlab/markdown.rb

@@ -68,23 +68,8 @@ module Gitlab
       @options      = options
       @html_options = html_options
-      # Extract pre blocks so they are not altered
-      # from http://github.github.com/github-flavored-markdown/
-      text.gsub!(%r{<pre>.*?</pre>|<code>.*?</code>}m) { |match| extract_piece(match) }
-      # Extract links with probably parsable hrefs
-      text.gsub!(%r{<a.*?>.*?</a>}m) { |match| extract_piece(match) }
-      # Extract images with probably parsable src
-      text.gsub!(%r{<img.*?>}m) { |match| extract_piece(match) }
-
       # TODO: add popups with additional information
-      text = parse(text, project)
-
-      # Insert pre block extractions
-      text.gsub!(/\{gfm-extraction-(\h{32})\}/) do
-        insert_piece($1)
-      end
-
       # Used markdown pipelines in GitLab:
       # GitlabEmojiFilter - performs emoji replacement.
       # SanitizationFilter - remove unsafe HTML tags and attributes
@@ -129,6 +114,21 @@ module Gitlab
       text = result[:output].to_html(save_with: save_options)
+      # Extract pre blocks so they are not altered
+      # from http://github.github.com/github-flavored-markdown/
+      text.gsub!(%r{<pre>.*?</pre>|<code>.*?</code>}m) { |match| extract_piece(match) }
+      # Extract links with probably parsable hrefs
+      text.gsub!(%r{<a.*?>.*?</a>}m) { |match| extract_piece(match) }
+      # Extract images with probably parsable src
+      text.gsub!(%r{<img.*?>}m) { |match| extract_piece(match) }
+
+      text = parse(text, project)
+
+      # Insert pre block extractions
+      text.gsub!(/\{gfm-extraction-(\h{32})\}/) do
+        insert_piece($1)
+      end
+
       if options[:parse_tasks]
         text = parse_tasks(text)
       end
@@ -150,7 +150,7 @@ module Gitlab
       @extractions[id]
     end
-    # Private: Parses text for references and emoji
+    # Private: Parses text for references
     #
     # text - Text to parse
     #