|
Yes, the XML Specification explicitly says XML uses ISO 10646, the international standard character repertoire which
covers most known languages. Unicode is an identical repertoire, and the two standards track each other. The spec
says (2.2): ‘All XML processors must accept the UTF-8 and UTF-16 encodings of ISO 10646…’. There is a Unicode FAQ at
http://www.unicode.org/faq/FAQ.
UTF-8 is an encoding of Unicode into 8-bit characters: the first 128 are the same as ASCII, and higher-order
characters are used to encode anything else from Unicode into sequences of between 2 and 6 bytes. UTF-8 in its
single-octet form is therefore the same as ISO 646 IRV (ASCII), so you can continue to use ASCII for English or
other languages using the Latin alphabet without diacritics. Note that UTF-8 is incompatible with ISO 8859-1 (ISO
Latin-1) after code point 127 decimal (the end of ASCII).
UTF-16 is an encoding of Unicode into 16-bit characters, which lets it represent 16 planes. UTF-16 is incompatible
with ASCII because it uses two 8-bit bytes per character (four bytes above U+FFFF).
|
