Proposed fix for DR 10-0016 ("MCE: Core Concepts")

[Chris Rae]

Hi all -just wanted to say I'm digging up the right people on the dev teams just now; I'll report back on this thread.

Chris

-----Original Message-----
From: Alex Brown [mailto:alexb at griffinbrown.co.uk] 
Sent: 23 June 2010 02:38
To: Chris Rae; e-SC34-WG4 at ecma-international.org
Cc: Jesper Lund Stocholm <jesper.stocholm at ciber.dk> (jesper.stocholm at ciber.dk)
Subject: RE: Proposed fix for DR 10-0016 ("MCE: Core Concepts")

Chris hi

> Howdy... sorry, I do see what you mean about "enhanced or modified"
> implying that subsumption is required.
> 
> When we planned our extensions, we did think we were being compliant 
> with part 3 - I believe we went with adding children in other 
> namespaces over subsumption because subsumption makes for a worse 
> back-compat story (older application lose the entire elements, rather 
> than just the extra attributes).

But surely any legacy apps which handled MCE at all would have to handle subsumption, since that is part of MCE?

>I think we were under the impression that either subsumption or  the 
>use of ignorable namespaces for children were valid.

Wouldn't that depend on interpreting "modified or enhanced" as meaning nothing? But once you start adding novel new features to an existing vocabulary I don't see any way of claiming you are doing anything other than modifying or enhancing that markup!

Perhaps the text could be amended in line with your approach ... but that still leaves two different approaches with (it seems to me) no standards-based way to decide between them -- which is not good for interoperability.
 
> I'm going to go and find the developers to see how they were reading 
> the standard - would it be ok if I reported back on the next WG4 call 
> and we can work out where to go from there?

Well that is over two weeks away. I was rather hoping we could move towards a resolution soon with the benefit of some on-list discussion -- things are rather becalmed at the moment. 

That said I won't be able to attend the next conference calls, so I'll leave it to others to comment ...

- Alex.

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