UTF-8
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In protocols that up to now have used US-ASCII only, UTF-8 [UTF-8]
forms a simple upgrade path; however, its use should be negotiated
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... achieve a particular level of quality for the purpose of displaying a
text stream. For example, UTF-8 encoded Han may require transmission
of a language tag to select the specific glyphs to be displayed at a
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... CES is typically associated with a single CCS; for example,
UTF-8 applies only to ISO 10646.
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For text-oriented protocols, new protocols should use UTF-8, and
protocols that have a backwards compatibility requirement ...
... meet this model in the future.
For other protocols, the default should be UTF-8 as this initially
allows US-ASCII to be entered as-is, and enables the full repertoire
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... RFC 1522(-> 2049draft | 2048(-> 4289 | 4288) | 2047draft | 2046draft | 2045draft) forms an adequate framework for supporting text; UTF-8
alone is not a possible solution, because the mail pathways are
assumed to be 7-bit ...
... The identifiers carried as information about parties are already
defined to be in UTF-8.
FTP
Protocol ...
... are defined in terms of US-ASCII only. One possible solution
would be to define a "UTF-8" mode for the transfer of filenames
and directory information; this would need to be a negotiated
facility, with fallback to US-ASCII ...
... identifiers; there is strong reason to allow
non-ASCII characters in these. A UTF-8 negotiation might be the
most appropriate thing, however, UTF-8 ...
... UTF-8 negotiation might be the
most appropriate thing, however, UTF-8 is awkward to use.
Unfortunately, UTF-7 isn't suitable because it conflicts with
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... ASCII range. A
single solution is the best; problems resulting from UTF-8
should be investigated.
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... ISO 8859-1. The next version
will use UTF-8. The currently designed changes will also allow
the specification of individual attributes on attribute names;
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... an encoding which may be more suitable for specific purpose. For
example, UTF-8 is a character encoding scheme for ISO 10646.
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... ISO/JTC1), "Amendment 2:1993, UCS Transformation Format 8 (UTF-8)", in ISO/IEC 10646-1:1993 Information technology - Universal Multiple-Octet Coded Character Set (UCS ...
... Inc., et.al. August 1995.
Yergeau, F. "UTF-8, a transformation format of Unicode and ISO 10646 ...