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RE: [public-webapps] Comment on Widget URI (7)

From: Larry Masinter <masinter@adobe.com>
Date: Wed, 16 Dec 2009 18:20:42 -0800
To: Marcin Hanclik <Marcin.Hanclik@access-company.com>, Robin Berjon <robin@berjon.com>
CC: "www-tag@w3.org" <www-tag@w3.org>
Message-ID: <C68CB012D9182D408CED7B884F441D4D0B1680@nambxv01a.corp.adobe.com>
(bcc public-webapps since not as relevant)

I actually think the TAG discussions about versioning and the use of version
indicators has been helpful, but it's been hard to drive this to a publication,
because there's still some work to be done. However, I think the main insight
I've had is that version indicators have limited (but non-zero) utility in 
situations where the popular language implementations evolve independently
of published language specifications. Normally, if language implementations
follow language specifications closely, you can use the version number of
the specification as a good indicator of the version number of the language.

However, in situations like HTML, where the implementations have evolved
-- and are likely to continue to evolve -- independently of the versions
of the specifications (and each other), the utility of a version indicator
is more confusing. Users would *like* a version indicator to correspond
to a category of implementation, but the only thing we can give version 
numbers to realistically are versions of specifications instead. So the
utility is limited to controlled situations where the producer of the document
with a version indicator really carefully intends to note a specification 
version, or to cause validation against a particular specification.

I'm not quite sure what "P&C" is, to know how this analysis applies to it.


-----Original Message-----
From: Marcin Hanclik [mailto:Marcin.Hanclik@access-company.com] 
Sent: Wednesday, December 09, 2009 1:37 PM
To: Larry Masinter; Robin Berjon
Cc: public-webapps@w3.org
Subject: RE: [public-webapps] Comment on Widget URI (7)

Hi Larry,

It's a pity you were not involved in the discussions around P&C's version attribute.

From: public-webapps-request@w3.org [public-webapps-request@w3.org] On Behalf Of Larry Masinter [masinter@adobe.com]
Sent: Wednesday, December 09, 2009 7:20 PM
To: Robin Berjon
Cc: public-webapps@w3.org
Subject: RE: [public-webapps] Comment on Widget URI (7)

FWIW, just to be clear:

My comments about versioning and version numbers only apply
to the URI scheme, and not to language specifications in

I haven't reviewed any of the other WebApps documents,
except in the context of reviewing the URI scheme.

In general, I support appropriate use of version numbers in
languages and language specifications, especially since
documents and file formats have ample opportunities for
in-band version indicators. It's unfortunate that URIs,
being compact strings, have no place for version indicators.


-----Original Message-----
From: Robin Berjon [mailto:robin@berjon.com]
Sent: Thursday, November 19, 2009 4:08 AM
To: Larry Masinter
Cc: public-webapps@w3.org
Subject: Re: [public-webapps] Comment on Widget URI (7)

Dear Larry,

thank you for your comments.

On Oct 10, 2009, at 19:44 , Larry Masinter wrote:
> "Widgets 1.0: Widget URIs" the "1.0" might imply some kind of versioning, but there is no versioning of URI schemes.
> Suggestion: retitle "Widget URIs"

I have provisionally made this change. I agree with Marcos that it would be good to do so throughout the widget family of specifications, especially since there is no reason why versions of its various components need to evolve in synchronised fashion - one could use P+C 4.2 with WARP 2.7.

Recommendation to the WG: apply the same change throughout.

Robin Berjon - http://berjon.com/


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Received on Thursday, 17 December 2009 02:21:36 UTC

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