But namespace 0 is items.

Lexemes are in their own namespace and I don't think it'd be good for re-users to mix them all together. Right now you can rather easily split Items, Lexemes and Properties.

@Micru This isn't invalid. The redirect is not meant for people using Wikidata itself, but for people that type in [[:d:Wikidata]] on another project and expect to reach the main page of Wikidata. Since ns0 is for items it's impossible to create a redirect ourselves. The interface and the API don't allow for this.

In T195793#4238638, @Micru wrote:

@Mbch331 Thanks for clarifying that. I have never used [[:d:Wikidata]] myself, so I didn't consider that it was so important for other people. For the record I have to add that typing [[:w:Wikipedia]] links to the English Wikipedia article for Wikipedia and not to the Main page of https://www.wikipedia.org/

That's because the prefix w in interwikis points to enwiki by default on multilingual projects.

In T195793#4238638, @Micru wrote:

@Mbch331 Thanks for clarifying that. I have never used [[:d:Wikidata]] myself, so I didn't consider that it was so important for other people. For the record I have to add that typing [[:w:Wikipedia]] links to the English Wikipedia article for Wikipedia and not to the Main page of https://www.wikipedia.org/

I guess you know the cause - wikipedia.org isn't a project but rather a disambiuation between projects, wikidata.org is a dedicated project. Also, it'll be more understandable if [[:d:Wikidata]] would take you to the item about Wikidata. At least, it would be consistent with other's project state.

Well, even [[:d:Main Page]] or [[:d:Main page]] won't take you to the main page (which is more stranger, because both [[:w:Main page]] and [[:w:Main Page]] would take you to the main page of the English Wikipedia and this is true at least about cswiki as well ([[:w:cs:Main Page]] and [[:w:cs:Main page]] would take you to the main page of the Czech Wikipedia).

At this place, I'd like to remind that both https://www.wikidata.org/wiki/Main_page and https://www.wikidata.org/wiki/Main_Page used to exist, but were deleted by @Vogone as "bad hack". The question is what a hack is. I'm not an amdin nor a sysadmin so I cannot check, but maybe it can direct us somewhere.

Martin

In T195793#4240584, @Urbanecm wrote:

At this place, I'd like to remind that both https://www.wikidata.org/wiki/Main_page and https://www.wikidata.org/wiki/Main_Page used to exist, but were deleted by @Vogone as "bad hack". The question is what a hack is. I'm not an amdin nor a sysadmin so I cannot check, but maybe it can direct us somewhere.

Before getting deleted it was a redirect to [[Wikidata:Main Page]].

Seems to me, the solution to this problem is to simply modify the error message that is shown when a nonexistent page title is requested. (See my comment at the local discussion, and follow up there, if desired.)

In T195793#4240780, @Mbch331 wrote:

In T195793#4240584, @Urbanecm wrote:

At this place, I'd like to remind that both https://www.wikidata.org/wiki/Main_page and https://www.wikidata.org/wiki/Main_Page used to exist, but were deleted by @Vogone as "bad hack". The question is what a hack is. I'm not an amdin nor a sysadmin so I cannot check, but maybe it can direct us somewhere.

Before getting deleted it was a redirect to [[Wikidata:Main Page]].

My question is more about why it got deleted than what was in it - that is somehow clear from the title itself.

If I remember correctly, I was asked by Lydia to delete this because the WMDE developers had some technical concerns due to ns0 being the item namespace. But since this is almost 5 years ago by now, my memory could be wrong.

As to why I called it a "hack": I created this redirect by importing the redirect from metawiki which is obviously a rather unusual way of creating pages in the wikidatawiki ns0.

The suggestion I alluded to above (T195793#4240816) has been put into effect. See d:MediaWiki:Wikibase-noentity and the associated talk page. Not sure how that change affects this task, if at all.

but for people that type in [[:d:Wikidata]]

Why would anyone do that? If someone wants to reach WD Main page from another wiki they should use [[:d:]], not [[:d:Wikidata]].

Unless we implement some form of AI that guesses what the user actually wanted I suggest this to be closed as invalid.

It would make sense if [[:d:Wikidata]] opened the item on Wikidata, but then I guess it should be another ticket and with a larger scope — it shall open an item that has a label in the current interface language that matches the title provided or the search results if there are several items with such label — or something along such lines.