Re: [Widgets] Widget Gallery RSS like sharing format

On Tue, Mar 17, 2009 at 1:57 PM, Robin Berjon <> wrote:
> On Mar 17, 2009, at 13:24 , Marcos Caceres wrote:
>> Agreed. Thinking forward, how do you recommend we identify version 2.0
>> of the widget configuration file format (or should we just cross that
>> bridge when we get to it?) ?
> Personally, I would recommend that we don't :) Version identifiers are
> largely useless and experience shows that users use them wrong (e.g. a bunch
> of SVG out there that's labelled as 1.1 is really 1.2, but people just
> copy-paste the root element).

Agreed. This is the reason we did not specify a version or platform
attribute for widgets to date.

> There are strategies to implement versioning of XML vocabularies which don't
> require having a version identifier. These are generally based on an
> "ignore" approach whereby elements and attributes that the processor doesn't
> know about are silently skipped.

This is our current model in processing.

> That means we can add new features in the
> next revision and it won't break older UAs. If at some point we make
> breaking changes, then we just change the namespace.


> Note that this needs to be defined in v1, so no, I think we have to cross
> that bridge now. SVG includes this strategy:

We've crossed it :) It's been there since the beginning.

> It is worth pointing out that porting the same strategy to the configuration
> document would be simpler.


Marcos Caceres

Received on Wednesday, 18 March 2009 08:37:59 UTC