This is the revision history for re2 in <libera.chat:#regex>

factoid_idsubjectcopulapredicateauthornamespace
15635 re2 is https://github.com/google/re2/wiki/Syntax digitok <freenode.net:#regex>
15634 re2 is https://github.com/google/re2/wiki/Syntax digitok <freenode.net:#regex>