Thank you for your reply
I can classify the Unicode's encodings for the following table.
(These names are for convenience, not formal terms.)
(8bit) (16bit) (32bit) (code range)
UTF-8-limit1 UTF-16-limit1 UCS-4-limit1 0x00000000-0x0000FFFF
UTF-8-limit2 UTF-16-limit2 UCS-4-limit2 0x00000000-0x0010FFFF
UTF-8-limit3 UTF-16-limit3 UCS-4-limit3 0x00000000-0x7FFFFFFF
Now I fill up the above table with formal terms (UCS-? = ISO-10646-UCS-?)
(8bit) (16bit) (32bit) (code range)
(undef.)(*1) UCS-2(*1) (undef.)(*1) 0x00000000-0x0000FFFF
((*1)undef.)(*2) UTF-16 UTF-32 0x00000000-0x0010FFFF
UTF-8 (N/A) UCS-4 0x00000000-0x7FFFFFFF
"(*1)" will be obsolete, so we don't need to take care of them.
But "(*2)" will bring us serious problems (for example, data loss),
unless we define this.
However, I don't have any complaint of UTF-8's encoding itself.
I want to have some signature's name for "(*2)".
Best regards,
Masahiko.
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