Please leave your sense of logic at the door, thanks! now more useful when migrating existing designs

by Henri Sivonen in Conformance Checking, Syntax

Due to implementation details, the HTML5 facet of used to ignore the content of obsolete elements such as center, because obsolete elements were simply unknown. This wasn’t particularly useful when assessing the HTML5-upgradeability of an existing design that wrapped everything in center, for example.

The HTML5 facet of now knows about obsolete container elements that existed as deprecated in HTML 4.01. This means that center is still an error, but the contents are now checked as HTML5.

Also, now allows legacy-style internal encoding declarations per the latest Editor’s Draft.

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