bruh

What part specifically?
There are lot of fiddly bits on this one without an objective "best way" to handle it.

ah shoot I didn't even think of that

old thread, but I'd recommend hiding the actual regex in a variable that suggests it's regex so nobody ever has to guess what it is. If you know it's a "regular expression", then yes it's readable.

absoultely, 100% - very readable imho

would you use this as production code? is it readable enough?

Would adding a multiline operator to the regex be useless?

so regex aren't case sensitive?