@Izno I thought so too at first but our rev_actor is not zeroed. That looks fine.

@matmarex Unfortunately no. Here is part of the log, it says revision_comment_temp does not exist, so nothing to do.

In T275246#8882399, @Ladsgroup wrote:

I suggest running a query on every wiki to make sure there is no empty rev_comment_id left. I tried running:

ladsgroup@mwmaint1002:~$ foreachwikiindblist all mysql.php -- -e "select count(*) from revision where rev_comment_id = 0;"

But that got super slow even in medium size wikis, don't want to run it on wikidata, specially on production.

@Physikerwelt we implemented many tests already. I think we just forget to close this task. Can be closed, in my opinion.

In T208758#8447476, @ovasileva wrote:

@Physikerwelt - we're interested in testing this on the beta cluster prior to next week's train. Is there any way we can test this and do QA?

@Jdlrobson Thank you very much. That was the missing piece. From our site, everything is running again. Following your changes, it seems we are close to an end on your site too?

@Jdlrobson I updated our patch according to your changes and was able to make it work again (based on your patchset 20).

@Physikerwelt I haven't. Thanks for pointing that out. I will check if that change works tomorrow.

@Jdlrobson @phuedx For now, it is not our goal to be able to rewrite the gadget. In fact, we just want to utilize the popups as they are right now and show additional information about a mathematical expression (similar to the previews for links). In the far future, it might be interesting to have more possibilities in order to make finer, task-specific adjustments on the popups but that's all out of scope for now. In fact, the little WIP demo by @Jdlrobson entirely fits our needs already.

I'm ok with that. However, for me 'param' is not really intuitively a wrapper for strings. Maybe Text or MathText or TexText or something like that? Maybe even as simple as TexString might work?

@Jdlrobson @phuedx What can we do to move this forward?

@phuedx Considering the popup extension will be opened up for potentially more types of popups, a more selective enable/disable mechanism might be the right choice. But from our Math perspective, it does not make much of a difference.

Consider https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Math/+/710329/, I think we can close this issue?

@TheDJ sorry for that and thanks for the tip.

@Jdlrobson I implemented everything on our side and it looks good so far:

@Physikerwelt Supporting option 2 would not be too complicated. The issue I see is that in the near future, somebody comes up with a new idea on how to represent the elements of a formula and we need implement another option again. This is very much a never ending story where we (our Math extension) is always trying to catch the new trend on Wikidata to keep things running. And the people on Wikidata are not aware of our system that depends on the correct setup and use.

In T312893#8078321, @Toni_001 wrote:

I confirm that https://www.wikidata.org/wiki/Q30204 is modeled correctly using the "new" scheme.

In T312893#8078239, @Physikerwelt wrote:

if we can replace P527 with P9758 and everything works as it did before, we can close this issue right away?

@Jdlrobson Sorry for the delay. I finally find time to focus on this issue and have taken over Moritz's progress so far. I am keen to work on this now until its done.

@Physikerwelt, I plan to work on https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Math/+/710329 in 2 weeks. I hope to finish by 15th July. Shouldn't take too long but based on my previous experiences, it's hard to foresee all difficulties.

In T208758#6318061, @Andreg-p wrote:

@Physikerwelt @alexhollender This seems to be a valid option for me. However, somebody should confirm that an additional pop-up library is acceptable. Otherwise, we run into a dead-end again.

Thank you so much, everybody.
And once more, sorry for the mess!

In my naivety, I was hoping to avoid the procedure by just creating another account. Obviously not my smartest move :) I'm sorry for the mess!

@hashar
I noticed that the problem was the 2FA for AndreG-P. It is broken for this account. Unfortunately, after I reset the password for AndreG-P, it is still asking for the 2FA which does not work. So I cannot change the e-mail for AndreG-P because I cannot enter the account settings without 2FA.

@hashar
Thank you very much. That explains the problem a little bit. However, I am still not able to solve it.

@Aklapper In https://gerrit.wikimedia.org/r/login I enter the same credentials that I am using at https://wikitech.wikimedia.org/ to login.
But on https://gerrit.wikimedia.org/r/login, I got an "Authentication failed."

@Physikerwelt @alexhollender This seems to be a valid option for me. However, somebody should confirm that an additional pop-up library is acceptable. Otherwise, we run into a dead-end again.

@Physikerwelt A description of the special page Special:MathWikibase.

@Physikerwelt According to this post "omicron not working in latex" from 2015:

@alexhollender, I'm sorry for my late response. I have trouble setting up my new system to the point when I created the popups. So let me explain the concept a bit more in detail. Clicking on the popup will lead to a special page with all information, e.g. for the mass-energy equivalence it is this page: Special:MathWikibase&qid=Q35875

@alexhollender yes the picture is up to date.
I updated the picture in the issue description also.

@thiemowmde Thank you. The problem is, I thought I did that already. I load the modules in the special page:
https://github.com/wikimedia/mediawiki-extensions-Math/blob/master/src/SpecialMathWikibase.php#L64

		$output->addModules( [ 'ext.math.wikibase.scripts' ] );

Thank you for the hint. Patch set 5 should include all necessary changes to close this task: https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/Math/+/527556/

@Physikerwelt an autocompletion on wiki data IDs? I would understand if we allow textual inputs here and then activate auto-completion based on the words. Such as "mass-energy" and the first suggestion would be "equivalence". But I cannot imagine an auto-completion just based on the IDs. The only use case I can imagine is that the auto-completion only shows IDs that actually contain mathematical expressions. But I have no clue how to implement that now.

Hi everybody, I'm close to a prototype now. I created an extra API endpoint in the math extension and send requests to this endpoint if the user hovers over annotated math in the Popups extension.

Another update.
After I requested some help from the #wikimedia-tech IRC channel it seems to be better not to use special pages to fetch the data from wikidata but extend the popups extension so that it performs the fetch from wikidata by its own. The problem is that special pages do not contain "text" in a sense that the TextExtracts extension can extract this text. The mods in the IRC channel mentioned changing the TextExtracts extension would be a major re-engineering effort. Since the popups extension handles page previews and reference previews differently already, it would make sense to just add a special case for wikidata previews to the extensions. It's questionable if the popups extension should handle math specific content, but it seems to be the best option we have.

@thiemowmde do have an idea why we cannot fetch text via TextExtracts from special pages? I want to visualize as special page in a popup but the result from mw.Api.get does not return text from special pages.

I was able to detect the problems that avoid visualizing special pages.
The type of special pages is previewTypes.TYPE_GENERIC but the code currently only supports the cases in line 135 in src/ui/renderer.js.

I needed to create a Title object from a special page. The popup extension I'm using use the javascript API. So I need an object of mw.Title (https://doc.wikimedia.org/mediawiki-core/master/js/#!/api/mw.Title) from a special page. However, I'm not able to generate the right Title... Does somebody know how to do it?

@Aklapper Yes, it's not really a fix but kind of an extension we (@Physikerwelt) and I are planning to accomplish.