[whatwg] disabled and readonly attributes

[Markus Ernst]

In 4.10.15.2 (disabled) and 4.10.5.2.3 (readonly) I can't find out what 
UAs should submit if an element is disabled resp. readonly:
- nothing
- the default value
- any value that might have been entered, or assigned via DOM, before 
disabled resp. readonly was set to true
- any value that might have been assigned via DOM, even after disabled 
resp. readonly was set to true
- or is this up to the UA?

I personnally would appreciate some clarity about this.

Also, <fieldset> has a disabled attribute, but no readonly attribute. Is 
there a reason for this?

-- 
Markus