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RE: Can anyURI be empty?

• To: "C. M. Sperberg-McQueen" <cmsmcq@a...>
• Subject: RE: Can anyURI be empty?
• From: Elliotte Rusty Harold <elharo@m...>
• Date: Wed, 7 Apr 2004 17:33:05 -0400
• Cc: Michael Kay <michael.h.kay@n...>, xml-dev@l...
• In-reply-to: <1081356591.2430.82.camel@localhost>
• References: <20040407094651.OASK1202.mta04-svc.ntlworld.com@Turtle><1081356591.2430.82.camel@localhost>

At 10:49 AM -0600 4/7/04, C. M. Sperberg-McQueen wrote:
>The only rule I have heard suggested plausibly is that
>in a URI or URI reference, it's not legal to have two
>hash marks; if this is (a) true and (b) really the only
>syntactic constraint on URIs and URI references, then
>the set of legal lexical forms for anyURI is the set of
>strings which after IRI escaping have at most one
>hash mark.

I can cite a few more examples of strings that are definitely not 
URIs. Here's one:

http://www.example.com/file%GF.html

Of course what to do if you encounter such a string where you expect 
a URI is an open question. The XML Base errata note it is application 
specific.

-- 

   Elliotte Rusty Harold
   elharo@m...
   Effective XML (Addison-Wesley, 2003)
   http://www.cafeconleche.org/books/effectivexml
   http://www.amazon.com/exec/obidos/ISBN%3D0321150406/ref%3Dnosim/cafeaulaitA

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    • From: "Michael Kay" <michael.h.kay@n...>
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    • From: "C. M. Sperberg-McQueen" <cmsmcq@a...>

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