May 9 2019
I am seeing what might be the same error on the English Wiktionary. The diff for what is currently the latest revision of MediaWiki:Common.css shows the error [XNPAewpAAEMAADungXAAAAAS] 2019-05-09 05:54:03: Fatal exception of type "Wikimedia\Assert\ParameterTypeException". I'm the author of both revisions and my username is not invalid, so this seems not to be an example of T200055.
Apr 15 2019
Yes, plugging pure-Lua ustring into my example does work:
Apr 12 2019
Jan 5 2019
On English Wiktionary, this extension could be used to transclude a template at the top of pages in the Reconstruction namespace. At the moment, we have to manually add the template to every page. See for instance Reconstruction:Proto-Indo-European/dn̥ǵʰwéh₂s.
Oct 22 2018
Oct 3 2018
This feature would be useful, but using language codes would be complex.
Jul 1 2018
May 3 2018
Update regarding topic category structure, as it is no longer true, as the original post states, that Category:Fruits contains English words related to fruit. The category structure has changed so that Category:Topicname is an umbrella category that only contains categories: language-specific categories prefixed by a language code (Category:languagecode:Topicname) as well as other umbrella categories (Category:Subtopicname). Here, replace "Topicname", "topicname", and "Subtopicname" with things like "Fruits", "fruits" and "Apple cultivars". To use the example in the original post, now Category:Fruits only contains categories such as Category:en:Fruits, Category:fr:Fruits, Category:Apple cultivars, Category:Banana cultivars. English words related to fruit are now found in Category:en:Fruits.