?repeats the group contents below at most once:
.*any character (except for line terminators), repeated any number of times
Negated Character Class[^0-9a-zA-Z] 0-9one character from 0 (4810) to 9 (5710)
a-zone character from a (9710) to z (12210) (case sensitive)
A-Zone character from A (6510) to Z (9010) (case sensitive)
.*any character (except for line terminators), repeated any number of times