Is this RFC2047 paragraph noramlly obeyed?

[mai...@gmail.com]

RFC2047 section 3 says:

Some character sets use code-switching techniques to switch between
"ASCII mode" and other modes. If unencoded text in an 'encoded-
word'
contains a sequence which causes the charset interpreter to switch
out of ASCII mode, it MUST contain additional control codes such
that
ASCII mode is again selected at the end of the 'encoded-word'.
(This
rule applies separately to each 'encoded-word', including adjacent
'encoded-word's within a single header field.)

Most APIs for character encoding conversion do not include a facility
for performing this in a sensible way. Does this "MUST" normally get
obeyed in MIME implementations?

[Mark Crispin]

This text refers specifically to ISO 2022 encoded charsets, especially
ISO-2022-JP. If your application supports Japanese email then it must
obey this requirement.

This requirement is also a requirement in the ISO-2022-JP specification.

On Wed, 26 Mar 2008, mai...@gmail.com posted:

-- Mark --

http://staff.washington.edu/mrc
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