Elliotte Rusty Harold wrote:
> What about ISO-10646-UCS-2 and ISO-10646-UCS-4 as used in XML? Where
> do they fit in? Are they only part of ISO-10646 and not Unicode? or
> are they identical to UTF-16 and UTF-32? or something else?
I didn't include them just because they don't start with "UTF", and all the
recent jokes start with that acronym. So far, no one proposed any humorous
"UCS-something".
About UCS-2, my understanding is that it does not support surrogates, so it
should be limited to range U+0000..U+FFFD (16 bits).
UTF-32 is limited to ..U+10FFFD (20+ bits), while the UCS-4 theoretically
reaches U+7FFFFFFD (31 bits).
There are certainly other differences that I don't know. Do they have any
difference in endianness?
_ Marco
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