[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Just require URLs
Thanks, your comments are very well put and helpful. I do not in fact intend to use relative urn's. I do, however, need them to be as human-readable/writable as possible, and hierarchy supports those requirements in my case. Jeff > -----Original Message----- > From: Ron Daniel [mailto:RDaniel@D...] > Sent: Tuesday, June 01, 1999 3:33 PM > To: 'Jeffrey E. Sussna'; 'XML Dev' > Subject: RE: Just require URLs > > > A pedantic point to clarify some of the confusion over '/' in URNs > and URLs. > > RFC 2141 (the URN syntax spec) says that forward > slashes SHOULD NOT be used in their unescaped form. The > pedantic point is that to really really really forbid this, > the spec would have said MUST NOT. (And I know for a fact > that the choice of SHOULD NOT vs. MUST NOT was deliberate > in this case). > > The use of '/' gets bound up with the question of 'relative > URNs' and whether they are meaningful. The working group > did not reach consensus on that point, so the compromise > was to discourage the use of '/' but not totally forbid it. > > RFC 2396 is correct here. You MUST use '/' to denote hierarchy. > If you want to use them for something else you MUST %encode them. > If you want to do URNs with hierarchical levels in them, you > MAY use '/' but you SHOULD NOT. (The reason for that, as I > recall, is that it is very easy to break relative URNs.) > > Speaking personally, if I were sure that I would not be doing > relative identifiers, I wouldn't let the "SHOULD NOT" stop > me from using '/'. > > regards, > Ron Daniel Jr. > > > > xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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