The BNF rules from RFC 5322 transformed to PCRE by Nikita Popov and described in the post http://nikic.github.io/2012/06/15/The-true-power-of-regular-expressions.html.

Grabs the ID for the regex101.com permalink code. If a revision number is provided, grab that as well.

A neat regex for finding out whether a given torrent name is a series or a movie. Returns the full name of the series with the separator needed to make it pretty (ie, replace it with space or what you want). Also returns the season number or the year for the movie/series, depending on what was prev...

Simply searches for the thread-id in any kind of valid reddit-URL.

This regex should extract the subdomain, if any, or the domain, if no subdomain is used, from an arbitrary URL

RegEx email /^((?!\.)[\w-_.]*)(@\w+)(\.\w+(\.\w+)?)$/gim; Just playing with Reg Ex. This to validate emails in following ways ...

extract video id, index, play list id from youtube url

Matches all valid IP addresses from 0.0.0.0 to 255.255.255.255

This regex prevents the writing of non-standard conventional commits. I'm available on my github