https://bugzilla.wikimedia.org/show_bug.cgi?id=39428
Web browser: ---
Bug #: 39428
Summary: undo/restore may fail due to sitelink conflicts
Product: MediaWiki extensions
Version: master
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: WikidataRepo
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Mobile Platform: ---
If item A once linked to dewiki:Foo but now links to dewiki:Bar, and item B now
links to dewiki:Foo, item A can not be restored to the old revision that points
to dewiki:Foo.
This type of global-consistency conflict should be checked when preparing the
undo/restore operation, just like "local" conflicts that arise from later edits
of the item. The respective change to the sitelinks should be omitted, and this
should be reported to the user.
Implementation note: care should be taken that this works on the restore as
well as the undo codepath - the restore codepath so far bypasses checks for
conflicting edits.
Reminder: fix broken error message that is shown when a sitelink conflict
causes save to fail.
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