RE: Options for dealing with IDs

From: Elliotte Rusty Harold <>

At 1:24 AM +1100 1/14/03, Rick Jelliffe wrote:

>I think Chris misses out another option:
>?) Refactor XML so that there are four kinds of XML processors:  headlessWF,
>     WF, typed, and valid.  Deprecate WF in favour of WF and typedWF in all W3C
>     specifications.
>    - Headless WF must have no DOCTYPE.

> And what happens if it does? How does a document indicate that it is 
> headless? Simply by not having a DOCTYPE? Or is this a parser option? 
> What happens if a headless parser encounters a DOCTYPE? This feels 
> very rough to me.

If a headless parser finds a DOCTYPE it would fail. (Strictly, it would only
need to check if standalone=yes and if there are no declarations in the
internal subset which affect the infoset: set attribute values to ID* or 
adding default values, but that is too much work.)

A document without a DOCTYPE declaration is headless.  

It would be a parser option or parser type, just as WF or Validating are currently
parser options or types.   

Where is the roughness?

Rick Jelliffe


Received on Tuesday, 14 January 2003 12:56:25 UTC