⚓ T173262 Get arbitrary label from Item without loading the full Item (via Lua).

@Jarekt: Would it be ok for your use case if mw.wikibase.label( 'Q123', 'lang' ) were to only return a label if it actually exists in that language, no language fallbacks applied.

This is unlike using mw.wikibase.label( 'Q123' ) which takes fallbacks into account (on multilingual wikis, like commons). Using entity:getLabel also only takes fallbacks into account for the user's language (on multilingual wikis only again), thus this would make mw.wikibase.label( 'Q123', 'lang' ) equivalent to mw.wikibase.getEntity( 'Q123' ):getLabel( 'lang' ).

@Jarekt: Would it be ok for your use case if mw.wikibase.label( 'Q123', 'lang' ) were to only return a label if it actually exists in that language, no language fallbacks applied.

Yes, That way I can apply the fallback myself. However mw.wikibase.label( 'Q123', 'lang' ) will only be useful if T142903 is also implemented as most labels on Commons have link to Wikipedia in best matching language.