Patterns sourced from Regex Hub are available at https://github.com/lukehaas/RegexHub and are copyright Luke Haas licensed under the MIT license available at https://github.com/lukehaas/RegexHub/commit/3ab87b5a4fd2817b42e2e45dcf040d4f0164ea37. Patterns source from qdapRegex are copyright Tyler Rinker and Jason Gray, licensed under the GPL-2 license.
get_regex_library()