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Unicode (was RE: JIT-compilation for OCaml?)
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Date: 2001-01-20 (15:26)
From: John Max Skaller <skaller@o...>
Subject: Re: Unicode (was RE: JIT-compilation for OCaml?)
Pierpaolo BERNARDI wrote:
> On Thu, 11 Jan 2001, Dave Berry wrote:
> > I thought Unicode was a recognised subset of ISO-10646, corresponding to the
> > range 0-2^16.
> No. ISO-10646 and Unicode contains exactly the same code points.
> Unicode has room for about 2^20 code points. The ISO committee has
> agreed to limit ISO-10646 to the same range.

	Unless it has changed recently, the first 64K code points of ISO-10646
are known as the Basic Multilingual Plane (BMP), which corresponds
to ISO-10646. The other 'planes' are not currently used AFAIK,
but they exist. Indeed, some code points from the BMP are reserved
so Unicode can use multi-word encodings of the lower 4 planes.

John (Max) Skaller,
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