Re: System.WCh_Cnv

[Martin Krischik <krischik@users.sourceforge.net>]

Bjï¿œrn Persson wrote:

> Martin Krischik wrote:
>> I wonder about that. UCS character set are fixed length and UTF
>> character sets are variable lengt. So is it rigth  to say that  UCS-4
>> is UTF-32?
> 
> I believe every possible text will be encoded identically in UCS-4BE and
> UTF-32BE, as well as in UCS-4LE and UTF-32LE. If you have a
> counter-example then I would like to see it. What character could take
> up more than one code unit in UTF-32?

A few years ago you could have said the same replacing all '32' with '16'.
Many programmers relied on UTF-16 and UCS-2 being the the same. There where
no counter-examples at the time either. But one fine day in 2001 the
unicode authority(s) defined the 65537'th character...

I know that currently only 21 bits are actually used and the unicode
authority(s) have given up on using more codepoints. Still I am unsure of
just declaring them both the same.

Martin
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