Hello,
I have a custom domain set up and I’ve made some alias rules that work swell. I’m trying to make one final rule that’s a catch-all but with some exclusions. I’d like my catch-almost-all rule to match anything except addresses that include the strings web, master, admin, and info.
I’m by no means a regex whiz, but I’ve arrived at a pattern that seems to accomplish what I’m looking for and is proper (PCRE2 PHP>= 7.3) regex according to regex101.com. However, the rule-creation page rejects it as invalid.
It appears that the conditional (i.e. (?(?=...)|...) ) is the problem, but I’m not sure how this can be accomplished without one, because a plain look-ahead or look-behind doesn’t seem to be able to catch the strings to be avoided while also allowing for a wildcard on both sides.
Here’s the pattern:
^(?(?=.*(web|master|info|admin).*)|[-_A-Za-z0-9]*)$
or, with actual wildcard for the conditional match:
^(?(?=.*(web|master|info|admin).*)|.*)$
I’m guessing there’s probably a much more efficient way to do this, so hoping someone can either point that out, or alternatively advise what regex flavor the alias rules use.
Thanks!