Less deprecated QRegExp usage.
I would tend to make more stuff "static const QRegularExpression", given QRegularExpression unlike QRegExp has not the issue of storing matches inside itself.
@dhaumann QRegularExpression::wildcardToRegularExpression() was introduced in Qt 5.12, but Frameworks depend on 5.11 :-( So this change breaks build...
Oh, in that case can you or @cullmann simply revert this part or #ifdef it? I currently cannot at least until the weekend (sorry!).