On 14 Feb 2012, at 18:28, Tom Lane wrote:
>
> Oh, I see the reason for this: the code in cclass() in regc_locale.c
> doesn't go further up than U+00FF, so no codes above that will be
> thought to be letters (or members of any other character class).
> Clearly we need to go further when we are dealing with UTF8.
> I'm not sure what a sane limit would be though.
The Basic Multilingual Plane goes up to FFFF:
https://en.wikipedia.org/wiki/Mapping_of_Unicode_characters#Planes