Mar 19, 2019, 6:13 PM by [email protected]:
> On 19/03/2019 09:49, Mateusz Konieczny wrote:
>
>> Old style wikipedia link is one where language is stored in key, not in
>> value.
>>
>> For example "wikipedia:en=Ireland" is an old style link, while
>> "wikipedia=en:Ireland" is a form that is currently standard.
>>
>
> To expand, what do you mean here? What makes one the "standard" and the other
> not?
>
Usage. See https://taginfo.openstreetmap.org/keys/wikipedia
<https://taginfo.openstreetmap.org/keys/wikipedia> and
https://taginfo.openstreetmap.org/keys/wikipedia%3Aen
<https://taginfo.openstreetmap.org/keys/wikipedia%3Aen> (8000 vs 1 088 000
uses).
To lesser degree - OSM Wiki recommendations and support from data consumers.
>
> What/who consumers wikipedia* tags in OSM and what do they do with it?
>
As usual with data consumers - various things.
For example fetching descriptions from Wikipedia (Osmand and other map
displays) or influence on search results rankings (or example Nominatim) and
others uses.
https://taginfo.openstreetmap.org/keys/wikipedia#projects
<https://taginfo.openstreetmap.org/keys/wikipedia#projects> has lists of 4 more
projects that
submitted used tags to taginfo, but there are more not mentioned there.
> Which format is better for the data consumers?
>
One where it is enough to support single tagging scheme.
>
> If the wikipedia=en:X format is better than wikipedia:en=X format for data
> consumer Y, that's one thing. It just seems to squash a lot of data into one,
> and run the risk of losing data, since many wikipedia tags would be removed
> from OSM...
>
Information would not be lost. If there would be only wikipedia:en tag then
wikipedia tag would be created.
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