Do you still mean https://gerrit.wikimedia.org/r/#/c/149585/ ?

I am not sure how to fix the Gerrit failures, can someone help in the same?

Fixed the patch JavaScript. Also remembered(has been a long time) that we added translation percentage as part of the language bar too.

Great to see interest back on this.
Actually the last state of the patch was same as linked in https://upload.wikimedia.org/wikipedia/commons/7/74/Language_bar_design_2.pdf and used the ULS. I think since a lot of changes have come through, it's probably not functioning the same way.
IIRC completion status was dropped as a low usage feature, but a discussion might be needed. About the ordering of languages, it shows the priority languages first and the ones with translation available.

There is a patch in place with pending reviews. It was based on a suggestion from Siebrand to not allow the changes in case of protected pages.
In my opinion too, it's best to keep changing page language under edit rights.
https://gerrit.wikimedia.org/r/#/c/143015/

Hey, can someone give me a pointer on how to proceed with respect to the tests on the patch?

In T110489#1623712, @Nemo_bis wrote:

Serving different content at the same URL is bad most of the times anyway, users often become unable to choose what they want to see.

Breaks only for Main Page but works on other pages.

However according to the comments that were listed there, it will definitely take quite some time to pass. I mentioned all the related work done to avoid work getting repeated. :)

Anybody has this on their task list for review? Would be nice to see it in action :)

Actually this was one of the bugs fixed in the change set, and in an
efficient way.

Hi, Thanks for the patch. Robin was working on a patch to modify some features which will make everything fall into place, and a lot of work including similar to this patch depends on this.
All of them are outdated but I can surely work to get them back on track.
Robin's patch:
https://gerrit.wikimedia.org/r/#/c/137033/11

Can you set the $wgPageLanguageUseDB=True
and assign 'pagelang' user right to relevant groups?

What could I possible help in? Do you need some unit tests? Or manual testing?

@QuimGil: Great! Have been a bit out of touch lately but would be interested to help as much as possible. :)

I couldn't figure out how to fix the issues in the patch https://gerrit.wikimedia.org/r/#/c/136626/, any suggestions?

To some extent, the language bar designs worked on and finalized. It was even implemented on a Sandbox wiki for sometime by Siebrand too. The issue that we faced was no review.
Pointing out this documentation just in case it was missed. It shows the complete implementation from the patch.
https://upload.wikimedia.org/wikipedia/commons/7/74/Language_bar_design_2.pdf

Sorry, couldn't find much time to finish the pending patch. This task is a bit too complex for GCI. Will try to complete it when I get some time.

Can we add it as a GCI task? The previous patch is outdated.