in reply to regex : finding the location multiple clustered (in parenthesis) groups

You Might Consider using @- (or @LAST_MATCH_START with use English)
  1. It holds exactly what you are asking for first matching Group start at $-1, first matching group end at $+1.
  2. see 1. (use something like @-1,2)
  • Comment on Re: regex : finding the location multiple clustered (in parenthesis) groups