[html5] Validator.nu’s (X)HTML5 Validator does not validate XHTML5

Mon Aug 28 09:03:51 PDT 2017

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On Aug 28, 2017 12:02 PM, "Paul Raso" <paul at educationinvolved.org> wrote:

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> Paul Raso
> Executive Director
> Education Involved Advocacy Group
> paul at educationinvolved.org
> 416-587-6438 <(416)%20587-6438>
> #morethanonewaytolearn #yourworldisourclassroom
>
> On Mon, Aug 28, 2017 at 11:59 AM, Paul Raso <paul at educationinvolved.org>
> wrote:
>
>> unsubscribe already wtf
>>
>> Paul Raso
>> Executive Director
>> Education Involved Advocacy Group
>> paul at educationinvolved.org
>> 416-587-6438 <(416)%20587-6438>
>> #morethanonewaytolearn #yourworldisourclassroom
>>
>> On Mon, Aug 28, 2017 at 6:04 AM, Jorge . <chocolate.camera at gmail.com>
>> wrote:
>>
>>> Validator.nu (X)HTML5 Validator at https://html5.validator.nu
>>> validates only HTML5, not XHTML5, despite its name, when attempting to
>>> do so via direct input (Text Field).
>>>
>>> Tested with this markup:
>>>
>>> <?xml version="1.0" encoding="UTF-8"?>
>>> <!DOCTYPE html>
>>> <html xmlns="http://www.w3.org/1999/xhtml">
>>>    <head>
>>>       <meta charset="UTF-8"/>
>>>       <title>My title</title>
>>>    </head>
>>>    <body>
>>>    </body>
>>> </html>
>>>
>>> The submission form does not have an option to forcibly request XHTML5
>>> validation instead of HTML5. Even when the markup is preceded by the
>>> XML declaration (which nevertheless is purportedly not necessary if
>>> contents are UTF-8), the validator reports the very declaration as an
>>> error:
>>>
>>> > Error: Saw <?. Probable cause: Attempt to use an XML processing
>>> instruction in HTML. (XML processing instructions are not supported in
>>> HTML.)
>>>
>>> revealing that even with such markup it is validating HTML5 instead of
>>> XHTML5.
>>>
>>> The generic validator at https://validator.nu used to have a preset or
>>> parser (cannot remember) specifically for XHTML5, but not anymore
>>> either it seems.
>>> _______________________________________________
>>> whatwg at whatwg.org
>>> https://whatwg.org/mailing-list#specs
>>>
>>
>>
>
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