Re: drums2?
"Charles Lindsey" <chl@clw.cs.man.ac.uk> Mon, 19 August 2002 11:12 UTC
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From: Charles Lindsey <chl@clw.cs.man.ac.uk>
Subject: Re: drums2?
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Date: Mon, 19 Aug 2002 10:02:10 +0000
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In <200208181956.g7IJuK027910@astro.cs.utk.edu> Keith Moore <moore@cs.utk.edu> writes: >I don't see why introducing I18N into the local-part need restrict the >syntax or flexibliity for non-I18Ned local-parts. As long as the I18N'ed >local-parts are a subset of the current syntax then I don't see why this >needs to affect 2822 or its successor. Suppose an encoding is defined for local-parts (perhaps some form of stringprep followed by punycode). Suppose X is the original local-part in some strange charset, and Y is the result of encoding it. Then Y is also a valid local-part in its own right under the present syntax, otherise there is no guarantee it will get transported (for example, the output of punycode is always a valid local-part AIUI). Then when you receive Y, how do you tell whether it was an encoding of X, or whether it really was intended to use that crazy-looking Y as the local-part of the address? You need therefore some foolproof way to distinguish between an encoded local-part and an unencoded one. This means placing some restriction on local-parts as presently defined. My own preference would be to limit genuine local parts to tokens, and to arrange that the encoded form was not a token. But there are other ways. -- 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
- Re: drums2? Keith Moore
- Re: drums2? Bruce Lilly
- Re: drums2? Charles Lindsey
- Re: drums2? WJCarpenter
- Re: drums2? Tony Hansen
- Re: drums2? Keith Moore
- Re: drums2? Charles Lindsey
- Re: drums2? Keith Moore
- Re: drums2? Charles Lindsey
- Re: drums2? Arnt Gulbrandsen
- Re: drums2? Keith Moore
- Re: drums2? Chris Newman
- Re: drums2? Charles Lindsey
- Re: drums2? ned+ietf-822
- Re: drums2? Keith Moore
- Re: drums2? Dave Crocker
- Re: drums2? Keith Moore
- Re: drums2? Pete Resnick
- Re: drums2? Charles Lindsey
- Re: drums2? Pete Resnick
- Re: drums2? Charles Lindsey
- Re: drums2? Tony Hansen
- Re: drums2? Dave Crocker
- Re: drums2? Pete Resnick
- Re: drums2? Tony Hansen
- Re: drums2? Keith Moore
- Re: drums2? Pete Resnick
- Re: drums2? Charles Lindsey
- Re: drums2? ned+ietf-822
- Re: drums2? Dave Crocker
- Re: drums2? Keith Moore
- Re: drums2? Charles Lindsey
- Re: drums2? Pete Resnick
- Re: drums2? ned+ietf-822
- drums2? Tony Hansen
- Re: drums2? Bruce Lilly
- Re: drums2? Keith Moore
- Re: drums2? Bruce Lilly
- Re: drums2? Charles Lindsey
- Re: drums2? Keith Moore
- Re: drums2? Bruce Lilly
- Re: drums2? Arnt Gulbrandsen
- Re: drums2? Keith Moore
- Re: drums2? Bruce Lilly
- Re: drums2? Arnt Gulbrandsen
- Re: drums2? Bruce Lilly
- Re: drums2? Bruce Lilly
- Re: drums2? Arnt Gulbrandsen