The current spec of the data model states that an L-Item has a lemma, a
language, and several forms, and the forms in turn have representations.

https://www.mediawiki.org/wiki/Extension:WikibaseLexeme/Data_Model

The language is a Q-Item, the lemma and the representations are
Multilingual Texts. Multilingual texts are sets of pairs of strings and
UserLanguageCodes.

My question is about the relation between representing a language as a
Q-Item and as a UserLanguageCode.

A previous proposal treated lemmas and representations as raw strings, with
the language pointing to the Q-Item being the only language information.
This now is gone, and the lemma and representation carry their own language
information.

How do they interact? The language set referencable through Q-Items is much
larger than the set of languages with a UserLanguageCode, and indeed, the
intention was to allow for every language to be representable in Wikidata,
not only those with a UserLanguageCode.

I sense quite a problem here.

I see two possible ways to resolve this:
- return to the original model and use strings instead of Multilingual
texts (with all the negative implications for variants)
- use Q-Items instead of UserLanguageCodes for Multilingual texts (which
would be quite a migration)

I don't think restricting Wiktionary4Wikidata support to the list of
languages with a UserLanguageCode is a viable solution, which would happen
if we implement the data model as currently suggested, if I understand it
correctly.

Cheers,
Denny
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