[whatwg] Script, style and backwards compatibility

[Martin Atkins]

Simon Pieters wrote:
> 
> This could thus also imply:
> 
>  * Don't disallow lang="" in XHTML5
>  * Don't disallow <base href> in XHTML5.
>  * Don't disallow <meta charset> in XHTML5 (it doesn't do any good, but 
> doesn't harm either).
> 

When using these, though, generic XML tools (i.e., those that aren't 
XHTML-aware) won't "see" these elements. This doesn't really matter much 
for the first and third, but for xml:base it can have a practical effect 
on how the document is processed in the presence of embedded XML 
fragments from other vocabularies.

And if you aren't going to use generic XML tools or embed fragments from 
other vocabularies, why would you use XHTML rather than plain old HTML?