+matches at least one character from the set below:
\da Unicode decimal digit
\.the literal . (4610 / 568 / 2E16)
\-the literal - (4510 / 558 / 2D16)
the literal (3210 / 408 / 2016)
\(the literal ( (4010 / 508 / 2816)
\)the literal ) (4110 / 518 / 2916)