| Anomie added a comment. |
prop=imageinfo is showing the data for the image associated with File:1979-80 National Football League (Ireland) final.jpg. MediaWiki's logic for finding "the image associated with a title" follows redirects behinds the scenes.
So what happens here at the API level is:
- The first query returns the data for info, categoryinfo, and userinfo, and also the imageinfo for the 2017-02-07T20:14:37Z upload.
- The second query returns only imageinfo for the 2016-08-23T10:52:33Z upload. No info, no categoryinfo, and no userinfo.
The intention is that the results of the two queries should be merged together for the client to have the full picture of the information available for the page. Pywikibot is instead incorrectly thinking that the second query alone gives some sort of full picture.
It doesn't help that the imageinfo module is crufty and needs a rewrite to behave a bit more sanely, i.e. to have "current file version for a set of pages" and "all file versions for one page" modes like prop=revisions does.
The most correct thing for pywikibot's "backlinks" generator to do is to keep continuing the query and merging the result sets until it gets the batchcomplete flag in the response.
Cc: Anomie, Dvorapa, Xqt, Aklapper, pywikibot-bugs-list, JJMC89, Magul, Tbscho, MayS, Sethakill, Mdupont, dg711, Avicennasis, jayvdb, Dalba, Masti, Alchimista, Rxy, Legoktm
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