Hello everyone,

On 6th July 2017, we made an announcement [1] about our plans to replace Tidy with RemexHtml on the Wikimedia cluster.

On 5th July 2018, we made the final switchover from Tidy [2].

For those of you interested, we published a blog post [3] documenting the process and steps in this project.

What next? ---------- RemexHtml is the default in MediaWiki since 1.31.

We are in the process of removing all traces of Tidy from Wikimedia's configuration files and from MediaWiki itself. We'll keep the ParserMigration extension enabled in its current form for another couple of months. After this period, the ParserMigration extension will be disabled completely alongwith all associated Tidy configuration. It will be re-purposed at a later time as required to compare impacts of other parser changes.

We haven't figured out the timeline yet, but at some point in the coming weeks, we'll disable most of the high-priority linter categories that only make sense in the context of replacing Tidy. If you have any thoughts about retaining or dropping these categories, please leave a note on mw:Help_talk:Extension:Linter [4].

Thanks! ------- As noted in the blog post [3], this was a collaborative effort between the several teams at the Wikimedia Foundation and volunteer editing communities on various wikis. Everyone involved played important and specific roles in getting us to this important milestone. An active embrace by various wikis of this effort has let the Foundation make this much-needed and important upgrade of a key piece of our platform.

In that context, I want to take this opportunity to specifically name and thank some of these individuals.

Tim Starling, C.Scott Ananian, Kunal Mehta, Arlo Breault, and yours truly did all the technical work in core, Parsoid, and the extensions. Erica Litrenta and Sherry Snyder helped develop the community engagement plan with various wikis and specific editors. Sherry, in particular helped a lot in the final months as we were trying to get more wikis to fix pages.  James Forrester helped review and provide feedback at various stages, especially with the phased deployment.  A number of other developers and staff were involved in review, feedback, during RFC discussions, and in helping with fixing templates where I couldn't do so myself.

Here is a subset of users across several wikis that I had an opportunity to interact with and observe who helped in various ways: developing bots and gadgets, writing help pages, asking clarification questions, providing feedback, reporting bugs on wiki and Phabricator, and fixing lots of pages and templates on their home and other wikis.

User:Daimano Eaytoy, User:Sakretsu, User:Anamalocaris, User:Izno, User:Lsj, User:xaosflux, User:PerfektesChaos, User:Lómelinde, User:Ikhitron, User:星耀晨曦, User:Deryck Chan, User:Sunpriat, User:Stryn, User:MawaruNeko, User:NicoV, User:Bdijkstra, User:Skalman, User:Shakespearefan00, User:Billinghurst, User:MarcoSwart, User:Mackensen, User:Andriy.v, User:Jonesey95, User:TheDJ, and the anonymous wiki user whoever you are. :-)

Obviously, there were a number of others users involved in this effort. Please feel free to raise your hand or recognize other's contributions on this thread! My thanks to you all!

Subbu.

1. https://lists.wikimedia.org/pipermail/wikitech-ambassadors/2017-July/001625.... 2. https://phabricator.wikimedia.org/T175706#4399641 3. https://blog.wikimedia.org/2018/07/09/tidy-html5-replacement/ 4. https://www.mediawiki.org/wiki/Help_talk:Extension:Linter