SV: [codelist] Fwd: Re: Impact of changing a specification from URI to IRI and XRI

["Bryan Rasmussen" <BRS@itst.dk>]

The only worry I had was that there are IRIs and XRIs that are not URIs. I am
not aware of any XRI that is not an IRI, and as anyURI is also an IRI I don't
think there can be a problem. There are of course URIs (and by extension
IRIs) that are not XRIs and must be converted to XRI form by an XRI processor
- but I guess that is not our problem.

Cheers,
Bryan Rasmussen

-----Oprindelig meddelelse-----
Fra: G. Ken Holman [mailto:gkholman@CraneSoftwrights.com]
Sendt: 1. december 2006 13:39
Til: Code List Representation TC
Emne: RE: [codelist] Fwd: Re: Impact of changing a specification from
URI to IRI and XRI


At 2006-12-01 09:47 +0000, Paul Spencer wrote:
>The only danger I know of in using non-ASCII characters is if any harm can
>be caused by someone maliciously (or otherwise) replacing an ASCII character
>with a similar-looking non-ASCII character.

But I believe IRI strings still can only have valid Unicode 
characters.  It isn't just an arbitrary binary string.

I just looked up some details in http://tools.ietf.org/rfc/rfc3987.txt

    The above mapping from IRIs to URIs produces URIs fully conforming to
    [RFC3986].  The mapping is also an identity transformation for URIs
    and is idempotent;  applying the mapping a second time will not
    change anything.  Every URI is by definition an IRI.

>This is the basis of many
>phishing attacks. I don't really see how that affects us, but then I also
>don't see how allowing non-ASCII characters helps us significantly either.
>Do we really need our identifiers to be that multi-lingual?

Yes, I absolutely believe that the identifiers do.  In the ISO 
paperwork I see go by my desk the Asian comments about IRI strings 
are raised for a number of specifications in which URI strings are used.

. . . . . . . . . . . Ken

--
World-wide corporate, govt. & user group XML, XSL and UBL training
G. Ken Holman                 mailto:gkholman@CraneSoftwrights.com
Crane Softwrights Ltd.          http://www.CraneSoftwrights.com/o/
Box 266, Kars, Ontario CANADA K0A-2E0    +1(613)489-0999 (F:-0995)
Male Cancer Awareness Aug'05  http://www.CraneSoftwrights.com/o/bc
Legal business disclaimers:  http://www.CraneSoftwrights.com/legal