[TYPO3-core] RFC #8160: invalidate xHTML in Backend

[Martin Kutschker]

Oliver Klee schrieb:
> The usual advice in this case is to remove the XML 
> prologue altogether because it is not required for XHTML (the encoding 
> is sent via the HTTP header anyway).

As I read the xml standard you may omit the prologue only if the 
document is in the default encoding which is utf-8. And note also that 
xhtml is for interoperability reasons never served with a proper MIME 
type, but as text/html. Which is a nuisance for all standard loving gusy 
and lasses :-)

Masi