[whatwg] Nested list

[Ryosuke Niwa]

Hi, I just realized that in HTML4.01 spec, DTD doesn't seem to allow
nested OL or UL without LI.  See
http://www.w3.org/TR/REC-html40/struct/lists.html#h-10.2  In fact, the
nested list example is marked deprecated.  But in practice, all major
user agents produce nested list when execCommand("Indent"...) is
executed.  Is there any chance we can standardize nested lists, and in
particular, what UA produce?

For example, all major browsers (Firefox, IE, & WebKit) produce
slightly different versions of HTML when indenting "item 2" in the
following HTML (assume it's content-editable):
<ol>
<ol id="u1"><li id="i1">item 1</li></ol>
<li id="i2">item 2</li>
<ol id="u3"><li id="i3">item 3</li></ol>
</ol>

In particular, many UA remove arbitrary id attributes.

Best regards,
Ryosuke Niwa
rniwa at google.com