
Assuming posix is required, the following result was found.
def$ This expression matches def in the string: abcdef The expression does not match def in the following string: defghi POSIX Character Class The POSIX character class operator lets you search for an expression within a character list that is a member...

bc1qf6elrdxc968h0k673l2djc9wrpazhqtxw8qqp4
0xb038962F3809b425D661EF5D22294Cf45E02FebF