[TYPO3-core] FYI24 #14118: Exception handler does not produce valid (X)HTML

[Patrick Broens]

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On 15-4-2010 12:40, Oliver Klee wrote:
> Hi,
> 
> Patrick Broens schrieb:
>> Yes, if we want to do it right, we need the XML prologue.
> 
> Why do we need it? Isn't it optional anymore? (I might be mistaken, so a
> current source on this would be great.)
XML prologue is required when the character encoding is other than the
default UTF-8 or UTF-16, which can be the case in the backend. However,
the exception handler only outputs UTF-8, but I'd rather stick to XML
prologue everywhere, like strongly recommended by the W3C.

W3C says about a XML 1.0 document prologue:
Definition: XML documents SHOULD begin with an XML declaration which
specifies the version of XML being used. [1]

Somehow the statement above doesn't fit the one following.

For strictly conforming documents in XHTML 1.1 W3C states:
An XML declaration like the one above is not required in all XML
documents. XHTML document authors are strongly encouraged to use XML
declarations in all their documents. Such a declaration is required when
the character encoding of the document is other than the default UTF-8
or UTF-16. [2]

Cheers

Patrick


[1] http://www.w3.org/TR/xml/#sec-prolog-dtd
[2] http://www.w3.org/TR/xhtml11/conformance.html

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