04-19-2010
UTF8 is encoded in 8-bit segments but occasionally it can take more than one byte to encode a full character. So the number of characters is wholly unrelated to the number of characters in the string; changing a #define won't make it any more right. None of the usual strlen/sizeof/etc things apply to a system where character encodings aren't always the same size!
If you want to count the number of UTF-8 encoded characters in the string, as opposed to the physical length of the string in bytes, I once wrote code for a
UTF8 getc. Use strlen to get the length of the datablock to feed it, then process UTF8 chars one by one until the end of the string to get the UTF8 char count.
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