Re: HTML5 redux

[Kristaps Dzonsons <kristaps@bsd.lv>]

> I don't object to that route.
>
> I'd probably not merge to the VERSION_1_12 branch until the release
> is done, and i'd probably merge to OpenBSD after the cleanup is done.

Ingo,

Ok!  But as seen below, there's more to do before committing...

>> With this patch, both -Thtml and -Txhtml will produce HTML5.  This
>> can be disabled in html.c by replacing the HTML_HTML5 allocation
>> with the respective type.  The resulting HTML5 validates just fine,
>> as do the existing modes (if replaced in html.c).
>
> Not for me, there is one regression.
>
> But if you remove the chunk cited below, the regression goes
> away, so i'd say, go ahead - in particular if you plan to do the
> cleanup right afterwards.

This is a bit trickier than appears.

Basically, <p /> doesn't exist in HTML5 because <p> isn't a void 
element.  However, we can't just remove the auto-close parts of <p> 
because then we might have

  <p>
    Hello
    <div>world</div>
  </p>

Which is invalid.

http://www.w3.org/TR/html-markup/p.html#p

In short, mdoc(7) and man(7) can have all sorts of nested block scopes, 
and so can HTML, but <p> can't contain flow elements.

I think it's best, and cleanest, to just avoid <p> and use <div>, say as 
<div class="par">.

I understand we lose whatever semantic-ness may be acquired from <p>, 
but I don't think it's much of a loss given that, with a classed <div>, 
we'll have *real* semantics (the flow elements will be within the 
paragraph).

Naturally, this would work happily with HTML4 just as it would with HTML5.

I'll work on a patch and will submit it soon...

Best,

Kristaps
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