From: Charles Lindsey (chl@clw.cs.man.ac.uk)
Date: Tue Apr 23 2002 - 14:38:00 CDT
<http://www.landfield.com/usefor/drafts/section_3.06.02>
Principal changes:
Additions and removals in section 3.1 "Principal Changes".
Here are the diffs:
*** /tmp/dNHa4jN Tue Apr 23 13:50:39 2002
--- landfield/drafts/section_3.06.02 Tue Apr 23 13:50:03 2002
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*** 15,17 ****
o Whitespace is permitted in Newsgroups-headers, permitting folding
! of such headers. Indeed, all news headers can now be folded.
o An enhanced syntax for the Path-header enables the injection
--- 15,17 ----
o Whitespace is permitted in Newsgroups-headers, permitting folding
! of such headers. Indeed, all headers can now be folded.
o An enhanced syntax for the Path-header enables the injection
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*** 21,23 ****
are deemed to be in the UTF-8 character set (thus permitting, in
! particular, the use of Non-ASCII newsgroup-names).
o Large parts of MIME are recognised as an integral part of
--- 21,23 ----
are deemed to be in the UTF-8 character set (thus permitting, in
! particular, the use of non-ASCII newsgroup-names).
o Large parts of MIME are recognised as an integral part of
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*** 24,27 ****
Netnews.
- o The charset for headers is always UTF-8. This will, inter alia,
- permit newsgroup-names with non-ASCII characters.
o There is a new Control message 'mvgroup' to facilitate moving a
--- 24,25 ----
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*** 28,30 ****
group to a different place (name) in a hierarchy.
! o There are several new headers defined, such as Archive,
Complaints-To, Injector-Info, Mail-Copies-To, Posted-And-Mailed
--- 26,28 ----
group to a different place (name) in a hierarchy.
! o There are several new headers defined, notably Archive,
Complaints-To, Injector-Info, Mail-Copies-To, Posted-And-Mailed
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*** 31,32 ****
--- 29,33 ----
and User-Agent, leading to increased functionality.
+ o Provision has been made for almost all headers to have MIME-style
+ parameters (to be ignored if not recognized), thus facilitating
+ extension of those headers in future standards.
o Certain headers and Control messages (AppendixA.3 and Appendix
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*** 33,34 ****
--- 34,37 ----
A.4) have been made obsolete.
+ o Distributions are expected to be checked at the receiving end, as
+ well as the sending end, of a relaying link.
o There are numerous other small changes, clarifications and
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*** 39,48 ****
An important distinction must be made between serving and relaying
! agents which are responsible for the distribution and storage of news
! articles, and user agents which are responsible for interactions with
! users. It is important that the former should be upgraded to conform
! to this standard as soon as possible to provide the benefit of the
! enhanced facilities. Fortunately, the number of distinct
! implementations of such agents is rather small, at least so far as
! the main "backbone" of Usenet is concerned, and many of the new
! features are already supported. Contrariwise, there are a great
number of implementations of user agents, installed on a vastly
--- 42,51 ----
An important distinction must be made between serving and relaying
! agents, which are responsible for the distribution and storage of
! news articles, and user agents, which are responsible for
! interactions with users. It is important that the former should be
! upgraded to conform to this standard as soon as possible to provide
! the benefit of the enhanced facilities. Fortunately, the number of
! distinct implementations of such agents is rather small, at least so
! far as the main "backbone" of Usenet is concerned, and many of the
! new features are already supported. Contrariwise, there are a great
number of implementations of user agents, installed on a vastly
***************
*** 53,54 ****
--- 56,59 ----
+
+
In the list which follows, care has been taken to distinguish the
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*** 56,59 ****
-
-
o [RFC 2822] style comments in headers do not affect serving and
--- 61,62 ----
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*** 61,64 ****
Path-headers do not contain them). They are unlikely to hinder
! their proper display in existing user agents except in the case
! of the References-header in agents which thread articles.
Therefore, it is provided that they SHOULD NOT be generated
--- 64,67 ----
Path-headers do not contain them). They are unlikely to hinder
! their proper display in existing reading agents except in the
! case of the References-header in agents which thread articles.
Therefore, it is provided that they SHOULD NOT be generated
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*** 91,105 ****
o The use of the UTF-8 charset for headers will not affect any
! existing usage, since US-ASCII is a strict subset of UTF-8.
! Insofar as newsgroup names containing non-ASCII characters can
! now be expected to arise, some support from serving and relaying
! agents will be desirable, although it has been established that
! most current serving agents can already cope with such names
! without modification (although perhaps not in an ideal manner).
! Note that it is not necessary for serving and relaying agents to
! understand all the characters available in UTF-8, though it is
! desirable for them to be displayable for diagnostic purposes via
! some escape mechanism using, for example, the visible subset of
! US-ASCII. For users expecting to use the more exotic
! possibilities available under UTF-8, the remarks already made in
! connection with MIME will apply.
o The new Control: mvgroup command will need to be implemented in
--- 94,109 ----
o The use of the UTF-8 charset for headers will not affect any
! existing usage that complies with the previous standards, since
! US-ASCII is a strict subset of UTF-8. Insofar as newsgroup names
! containing non-ASCII characters can now be expected to arise,
! some support from serving and relaying agents will be desirable,
! although it has been established that most current serving agents
! can already cope with such names without modification (although
! perhaps not in an ideal manner). Note that it is not necessary
! for serving and relaying agents to understand all the characters
! available in UTF-8, though it is desirable for them to be
! displayable for diagnostic purposes via some escape mechanism
! using, for example, the visible subset of US-ASCII. For users
! expecting to use the more exotic possibilities available under
! UTF-8, the remarks already made in connection with MIME will
! apply.
o The new Control: mvgroup command will need to be implemented in
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*** 127,132 ****
-
-
-
-
--- 131,132 ----
Charles H. Lindsey ---------At Home, doing my own thing------------------------
Tel: +44 161 436 6131 Fax: +44 161 436 6133 Web: http://www.cs.man.ac.uk/~chl
Email: chl@clw.cs.man.ac.uk Snail: 5 Clerewood Ave, CHEADLE, SK8 3JU, U.K.
PGP: 2C15F1A9 Fingerprint: 73 6D C2 51 93 A0 01 E7 65 E8 64 7E 14 A4 AB A5