Module for implementing subscriptions to DLE users?

Question

DLE

The site has editor users who can be subscribed to, so that later they can be seen in the list of subscriptions. You also need to display information about the number of subscribers to the author. Can you recommend any dle module to implement such functionality?

Answer 1

I didn’t catch why lookahead is here, ERE is enough:
/(\w)\s*(\(\+\s\w\))?/