Cannot parse Unicode ranges after question mark as in " ?[\p{L}]+" #305
Description
A regular expression of the form "something, question mark, range or Unicode chars" is not parsed correctly.
As seen in the example: https://gcc.godbolt.org/z/41ea8anqT
[\p{L}]+|[\p{N}]+- works?\p{L}+| ?\p{N}+- works?[\p{L}]+| ?[\p{N}]+- doesn't compile even though it's valid