Polish Wiktionary is much interested in having an option to narrow search results to a category (single one is fully enough).
I've read https://bugzilla.wikimedia.org/show_bug.cgi?id=2285. Searching in category using incategory: keyword works on English Wikipedia, which as I have heard has a new internal search engine. Is it possible for another projects (more precisely: Polish Wiktionary) to get this search engine?