The list at the end isn't that good though. It's basically dictating this Matt Dugan's preferences. The third one about seven systems is both an exaggeration and a demand.
The rest of this page makes me think it would be really hard to work with Matt, and I'd probably just pass back when I was running projects. It's not worth the effort.
I guess I don't understand. Mind throwing up an example with multiple test strings on regex101.com ? I'd like to take a look and see if I can make a regex which does what you want.
So if you could write the examples there, and then a description like you would tell your mom of what you want I'll see what I can do.
We use it on slack and irc for debugging people's regular expressions all the time. Being able to have 30 revisions to a base regex to troubleshoot is fantastic.
Honestly don't let this get you down, here's a learning plan (use regex101 to learn)
1) Learn PCRE regex.
2) Try regex golf or cross words to learn PCRE regex.
3) Take the quiz on regex101.
Once you're done with all 3:
Learn the minor/major differences in the other languages. There aren't many. For example this named capture group:
(?<somename>someregex)
Would look like this in a different language:
(?P<somename>someregex)
There's some differences about what language can and cannot do like recursion because someone thought it was a great idea to make javascript awful at regex, but that's besides the point. Regex is totally worth learning.
The rest of this page makes me think it would be really hard to work with Matt, and I'd probably just pass back when I was running projects. It's not worth the effort.