Last modified: 2014-08-26 17:10:59 UTC
Did not really look for the extent of that one, but see that example: <https://commons.wikimedia.org/wiki/Special:ApiSandbox#action=query&prop=imageinfo&format=json&iiprop=extmetadata&iilimit=10&titles=File%3AAftonkl%C3%A4nning.%20Foto%20till%20boken%3A%20Ett%20sekel%20av%20dr%C3%A4kt%20och%20mode%20ur%20de%20Hallwylska%20samlingarna%20-%20Hallwylska%20museet%20-%2089365.tif> The is a CC-licensed photo of a PD object − which is fairly common − so there is both aa CC-BY-SA tag and a PD-old-100 one. (note this is a somehow nice case because license are nested into {{copyright information}} tag which labels what copyright status is for what) The API returns : "LicenseUrl": { "value": "http://creativecommons.org/licenses/by-sa/3.0\n", "source": "commons-desc-page", "hidden": "" }, "LicenseShortName": { "value": "Public domain", "source": "commons-desc-page", "hidden": "" }, "UsageTerms": { "value": "Public domain", "source": "commons-desc-page", "hidden": "" }, "Copyrighted": { "value": "False", "source": "commons-desc-page", "hidden": "" Effectively mixing up both license.
Mishandling of multiple licenses is bug 57259. This one is slightly different, as one the licenses is actually not about the image, and CommonsMetadata should ignore it. Link to image description page: https://commons.wikimedia.org/wiki/File:Aftonkl%C3%A4nning._Foto_till_boken:_Ett_sekel_av_dr%C3%A4kt_och_mode_ur_de_Hallwylska_samlingarna_-_Hallwylska_museet_-_89365.tif
I don't see any way to recognize right now that the license is not about the image; this should be fixed on Commons. Probably [[commons:Template:Copyright_information/row]] should add some machine-readable markup when underlying=yes is used.
(In reply to Tisza Gergő from comment #2) > Probably [[commons:Template:Copyright_information/row]] should add some > machine-readable markup when underlying=yes is used. I’d be happy to do it. Please advise on what sort of markup you’d expect.
bug 57259 should now be fixed to the extent that we never mix elements of different licenses into a single fictional license. Re: markup, I gave an example (not necessarily a good one; feel free to tweak) at https://commons.wikimedia.org/wiki/Commons_talk:Machine-readable_data#Copyright_information_of_underlying_content
