HTML indenting

[michaelhkay]

The spec says (in both 3.1 and 4.0):

The inline elements are those included in the %inline category of any of the HTML 4.01 DTDs or those elements defined to be phrasing elements in HTML5

This could be read as defining one set of inline elements for version="4.01" and a different set of inline elements for version="5.0", or it could be read as indicating that an element is an inline element if it satisfies either of these two conditions.

[ChristianGruen]

Certainly true. If HTML5 serialization is requested, I would expect only HTML5 elements to be considered.

[ndw]

There are no "HTML5 elements". Any sequence of characters can be parsed into an HTML5 document. I think the only thing the spec makes clear is which (few) you can represent with an empty tag.