In "[Regex reference and its fate](https://meta.stackoverflow.com/questions/252868/regex-reference-and-its-fate)", a reference question for the [regex](https://stackoverflow.com/questions/tagged/regex "show questions tagged 'regex'") was proposed. Several people noted that a resource like this should really be in the tag wiki. However, questions cannot be closed as duplicates of the wiki.

What if we allowed the wiki as a valid target for duplication?