Re: SUMMARY: Limiting msg-id generate syntax

In <p0630000ec26532b2d53d@[75.204.224.24]> Pete Resnick <[email protected]> writes:

>- Define the left hand side of the "@" in msg-id to be (dot-atom-text 
>/ ob-id-left)
>- Leave the right hand side of msg-id as it is (dot-atom-text / 
>no-fold-literal / obs-id-right)
>- Leave the text to normatively RECOMMEND (or should it be REQUIRE?) 
>that the right hand side be a domain identifier (either domain name 
>or domain literal)

>I'd prefer to leave the ABNF of domain-literal the way it is and 
>limit in the text.

I'm not too happy with that. The only things that need removing are
redundant <quoted-pair>s (e.g "\a") and maybe NO-WS-CTLs. That is nothing
like the mess of trying to fix <no-fold-quote>s in ABNF, and in fact the
syntax in the USEFOR draft is all that you would need:

   no-fold-literal =  "[" *( mdtext / "\[" / "\]" / "\\" ) "]"

   mdtext          =  %d33-61 /        ; The rest of the US-ASCII
                      %d63-90 /        ; characters not including
                      %d94-126         ; ">", "[", "]", or "\"

OK, you would need to add an obs- bit to that.


>I'd also be inclined to *not* talk about case-sensitivity and 
>comparisons since nowhere is it discussed in 2822.

OK. You seem to have allowed <local-part>s to be case sensitive without
actually saying so, so the same would apply to <msg-id>s. The only slight
worry is that people might still try to argue that the stuff after the "@"
is a domain-name, and therefore case-insenitive. Yes, that argument is
wrong as RFC 2822 is written, but not so obviously wrong that people are
not going to try it. Perhaps some remark (not normative) that <mesg-id>s
have been so designed that equality between them is simply a matter of
octet-by-octet comparison.

-- 
Charles H. Lindsey ---------At Home, doing my own thing------------------------
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