[standards-jig] JIDs (JEP-0029)
ckaes at jabber.com
Wed May 1 22:01:27 UTC 2002
>1. I would prefer to see consistency between this JEP and the relevant
>subsection of the IETF draft regarding terminology. For example, there is
>a reason I started to use the term "node" as opposed to "user" in the IETF
>draft, since the portion of the JID before the at sign is not always a
>user, but rather may be something like a conference room (in groupchat) or
>a publisher (in some pub/sub-style applications). Such entities are not
Agreed. I'll use your nomenclature.
>2. I would prefer that this JEP make it clear that only the domain
>identifier is necessary to have a valid JID. The node identifier and
>resource identifier are optional.
See the first line of the grammar:
<JID> ::= [<user>"@"]<host>["/"<resource>]
The brackets around user@ and /resource mean that they are optional.
>3. Characters disallowed in usernames (node identifiers, whatever :) are
>specified as Unicode character numbers in the IETF draft (e.g., U+003E)
>but by ostensive example in the JEP (e.g., >). I would prefer that we not
>resort to ostensive definition.
Actually, I specified allowed characters in the grammar:
<conforming-char> ::= #x21 | [#x23-#x26] | [#x28-#x2B] |
[#x2D-#x39] | [#x3B-#x3F] |
[#x41-#x7E] | [#x80-#xD7FF] |
[#xE000-#xFFFD] | [#x10000-#x10FFFF]
The disallowed characters were only spelled out for those who don't know
what characters I excluded in this terminal. I can wipe out the
offending list from section 2.3 since it adds no information not already
specified in the grammar.
>4. I'm not a character encoding guru -- is there a preferred style of
>identifying Unicode characters (e.g., U+0020 vs. #x20)?
Well, I went with the same notation used in the XML spec
(http://www.w3.org/TR/REC-xml). Seemed good enough for me ;-)
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