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Re: non-hierarchical URIs and square brackets

From: Graham Klyne <GK@ninebynine.org>
Date: Mon, 23 Jun 2003 13:00:51 +0100
Message-Id: <5.1.0.14.2.20030623125601.00baca98@127.0.0.1>
To: Al Gilman <asgilman@iamdigex.net>, uri@w3.org

At 14:35 19/06/03 -0400, Al Gilman wrote:

>At 05:45 AM 2003-06-19, Graham Klyne wrote:
>
>>or mid:, defined by RFC 2392, which is clearly non-hierarchical, but:
>>[[
>>      mid-url       = "mid" ":" message-id [ "/" content-id ]
>>]]
>>-- http://www.faqs.org/rfcs/rfc2392.html
>
>Please explain in what terms you find the 'mid' scheme to be "clearly 
>non-hierarchical."

I meant in the sense that it does not conform to the normal rules for 
hierarchical URIs;  e.g.

given a base URI:

   mid:m@example.ord/c@example.org

and a URI-reference:

   m2@example.ord/c2@example.org

making an absolute URI from these parts using normal hierarchical URI rules 
would yield:

   mid:m@example.ord/m2@example.ord/c2@example.org

which isn't a valid mid: URI.

#g


-------------------
Graham Klyne
<GK@NineByNine.org>
PGP: 0FAA 69FF C083 000B A2E9  A131 01B9 1C7A DBCA CB5E
Received on Monday, 23 June 2003 08:07:58 GMT

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