Title: RE: [xri] Initial proposed XRI 1.1 ABNF and issues analysis
Do you
think that we should place "*" and "!" in gen-delims then? Or are my
proposed changes ok as they stand?
Mike
-----Original Message-----
From: Dave McAlpin
[mailto:]
Sent: Wednesday, August 18, 2004
12:58 AM
To: Lindelsee, Mike ;
Subject: RE: [xri] Initial proposed XRI 1.1
ABNF and issues analysis
I intentionally included xri-sub-delims in xri-pchar, and this
was correct in the original ABNF. Since then, someone moved sub-segment
delimiters from xri-gen-delims to xri-sub-delims. I think this is just a
misunderstanding of what I intended for xri-sub-delims. The idea (borrowed
from 2396bis), is that xri-gen-delims are delimiters for which we define
semantics and are reserved for the purpose defined in the spec. In contrast,
xri-sub-delims are reserved as delimiters with no defined semantics, intended
for processor specific algorithms.
Dave
-----Original
Message-----
From: Lindelsee, Mike [mailto:]
Sent: Tue
8/17/2004 4:23 PM
To:
Subject: [xri] Initial
proposed XRI 1.1 ABNF and issues analysis
I've taken a look at the
proposed ABNF and would like to recommend a couple of changes. First, I
think we should be relatively strict in the authority part and restrict the
segment delimiters to only those that are valid delimiters. My concern
is that showing other delimeters in the authority part will imply to people
reading the ABNF that those delimiters might have some sort of meaning.
The second change is to remove the support for null segments in the authority
part. While there is an XDI use for null segments in the path part, it
doesn't seem to be needed in the authority part. And not allowing null
segments in the authority part helps to keep resolution as simple as
possible.
I also noticed what might be a bug -- the inclusion of
xri-sub-delims in the xri-pchar production. This allows segment
delimiters to be embedded within segments. I don't think that this makes
sense (Dave, please correct me if I'm wrong on
this).
Mike
Proposed changes to the updated XRI
ABNF
----------------------------------------
(change)
xri-sub-delims = xri-auth-delims /
xri-path-delims
(add)
xri-auth-delims = "!"
/ "*"
(add)
xri-path-delims = "&" / ":" / ";" / "," /
"'"
(remove)
xri-segment
= sub-segment *( xri-sub-delims sub-segment )
(add)
xri-auth-segment =
auth-sub-segment *( xri-auth-delims auth-sub-segment
)
(add)
xri-path-segment =
path-sub-segment *( xri-sub-delims path-sub-segment
)
(change)
XRI-authority = ( gcs-char [ xri-auth-segment ] ) /
xref-authority
(change)
relative-path = xri-path-segment * ( "/" xri-path-segment )
[ "?" xri-query ]
[ "#" xri-fragment
]
(change) xref-authority
= xref *( xri-auth-delims auth-sub-segment
)
(remove)
sub-segment
= ( *xri-pchar / xref )
(add)
auth-sub-segment = (
1*xri-pchar / xref )
(add)
path-sub-segment = (
*xri-pchar / xref )
(change-bug)xri-pchar
= xri-unreserved /
pct-encoded
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