Hi Mike,
I detect an error in:
>The first half of the pair is
>always in the 0xD000..0xD7FF range, and the second half of the pair is in
>the 0x0..0xFFFF range. Unicode 3.0 and ISO/IEC 10646-1;2000 have adopted
the
>UTF-16 mechanism as the only official usage of the 0xD000..0xD7FF scalar
>range.
Actually, surrogate pairs are better designed than that. In UTF-16, no
16-bit value is "overloaded" or used for anything other than itself. That
is, 0x212B is always ANGSTROM and never anything but ANGSTROM. It is *never*
half of a surrogate pair (in the same way that no byte in a UTF-8 character
is in-and-of-itself a character in UTF-8).
So, lead surrogate values are in the range: 0xD800 -> 0xDB7F
--> Note the disjoint for high-private use surrogates
Trailing surrogate values are in the range: 0xDC00 -> 0xDFFF
U+D000 -> U+D7FF are all part of the Hangul syllable range.
Thanks,
Addison
Addison P. Phillips
Senior Globalization Consultant
Global Sight Corporation
mailto:addison@globalsight.com
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