Change 702196 had a related patch set uploaded (by Daimona Eaytoy; author: Daimona Eaytoy):

[mediawiki/php/wikidiff2@master] Move diff markers content to a data attribute

https://gerrit.wikimedia.org/r/702196

Actually, only r651809 needs to be ported. r652191 does nothing relevant for wikidiff2. I also still have to port the part about adding a <br> for empty lines.

Change 702355 had a related patch set uploaded (by Daimona Eaytoy; author: Daimona Eaytoy):

[mediawiki/php/wikidiff2@master] Remove spaces from empty lines and preserve line breaks with <br>

https://gerrit.wikimedia.org/r/702355

Change 702196 merged by jenkins-bot:

[mediawiki/php/wikidiff2@master] Move diff markers content to a data attribute

https://gerrit.wikimedia.org/r/702196

Change 702355 merged by jenkins-bot:

[mediawiki/php/wikidiff2@master] Remove spaces from empty lines and preserve line breaks with <br>

https://gerrit.wikimedia.org/r/702355

It's look maybe wikidiff2 changes won't auto-deploy to the beta cluster. Testing this in your local environment can be quite a struggle, too… so I guess I'll leave this ticket here for now and when a new version of wikidiff2 is cut, we will (if possible) get it deployed to the beta cluster before production.

In T285776#7274214, @MusikAnimal wrote:

It's look maybe wikidiff2 changes won't auto-deploy to the beta cluster. Testing this in your local environment can be quite a struggle, too… so I guess I'll leave this ticket here for now and when a new version of wikidiff2 is cut, we will (if possible) get it deployed to the beta cluster before production.

Because it's a PHP extension, wikidiff2 is built and deployed as a Debian package, once a new release is made you'll need to ask SRE to update the package so it can be tested on beta cluster and then rolled out in production.

Diff 2 is now deployed to beta cluster, therefore this ticket can be closed.