Manual talk:Hooks/ArticleAfterFetchContentObject
Add topicAppearance
The removal of Hooks/ArticleAfterFetchContent in 1.22 broke extensions, e. g. HeaderFooter.
How are they fixed?
How is a Content-object converted into content-data before invocation of the old code? How is the modified content-data converted into a Content-object after the old code was executed?
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