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[Bug 23328] Allowed values for default-validation attribute value

From: <bugzilla@jessica.w3.org>
Date: Mon, 23 Sep 2013 17:28:01 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-23328-523-5N3bqdliwy@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23328

--- Comment #1 from Michael Kay <mike@saxonica.com> ---
I think the decision not to allow "lax" or "strict" as valid values for
default-validation was paternalistic; they aren't allowed because they would
not very often be useful. They could also impose an excessive performance
overhead if the processor doesn't find a way to avoid validating elements at
every level of the tree. It's quite hard to optimize away the redundant
validation in the general case, so I'm inclined to stick with the status quo.

As for the current text, saying

Therefore, such a processor must treat any [xsl:]validation or
default-validation attribute with a value of preserve or lax as if the value
were strip.

is probably a bit careless and should change to

Therefore, such a processor must treat any [xsl:]validation attribute with a
value of preserve or lax, or any default-validation attribute with a value of
preserve, as if the value were strip.

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