Regex: The Oldest Tricks in the Book

[grarpamp]

https://rexegg.com/regex-best-trick.html
https://swtch.com/~rsc/regexp/regexp1.html
https://regular-expressions.mobi/catastrophic.html
https://rexegg.com/regex-explosive-quantifiers.html
https://itnext.io/a-wild-way-to-check-if-a-number-is-prime-using-a-regular-expression-4edfb725f895
https://perldoc.perl.org/perlre
https://man7.org/linux/man-pages/man1/pgrep.1.html
https://github.com/qntm/greenery
https://github.com/mtrencseni/rxe
https://news.ycombinator.com/item?id=27774584
https://news.ycombinator.com/item?id=20645319
https://news.ycombinator.com/item?id=10282121

https://man7.org/linux/man-pages/man1/ed.1p.html