Re: a simple algorithm problem

>Presumably this still restricts Snowball to code points in the BMP? Or
>does it just restrict it to recognising and doing things with
>characters at code points in the BMP, passing through any others?

It would be the latter. Since stemming is applicable to a system of
languages, all  of whose characters are, I would assert, in the BMP, I do
think that is a problem.

>What's the character encoding of snowball scripts at the moment?

The scripts themselves are in ASCII, and ASCII assumptions are made in the
Snowball compiler.