... spotted with the brand-new checks for that in QCharRef.
The rx[i] == ~~~ check is clearly wrong, as rx is the regexp
we're building and `i` was not supposed to index into it.
The intended meaning was wc[i] == ~~~, testing if we were seeing
the closing bracket of a character set. We need to check for
that immediately for dealing with the special syntax of []...] where
the ] belongs to the character set (it can't be the closing one
as character sets cannot be empty).
Fix and add a regression test. Bonus: this code was almost
unchanged since 2009.
Change-Id: I958cd87fc25558e9d202d18b3dd4a35d0db16d8d
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: hjk <hjk@qt.io>
b9f96cacc9