+matches at least one character from the set below:
a-zone character from a (9710) to z (12210) (case sensitive)
A-Zone character from A (6510) to Z (9010) (case sensitive)
0-9one character from 0 (4810) to 9 (5710)
А-Яone character from А (104010) to Я (107110) (case sensitive)
а-яone character from а (107210) to я (110310) (case sensitive)
ёthe literal ё (110510 / 21218 / 45116) (case sensitive)
Ёthe literal Ё (102510 / 20018 / 40116) (case sensitive)
_the literal _ (9510 / 1378 / 5F16)