"Mark E. Shoulson" <mark at kli dot org> wrote: > And indeed, it went the other way too, back when ISO-10646 had not 17, > but 65536 *planes* and someone provided some reasonable evidence (or > just plain reasoned arguments) that 4.3 *billion* characters was > probably overkill.
Technically, I think 10646 was always limited to 32,768 planes so that one could always address a code point with a 32-bit signed integer (a nod to the Java fans). Of course, 2.1 billion characters is also overkill, but the advent of UTF-16 was how we ended up with 17 planes. -- Doug Ewell | Thornton, Colorado, USA | RFC 5645, 4645, UTN #14 www.ewellic.org | www.facebook.com/doug.ewell | @DougEwell