Rasmus <rasmus@gmx.us> writes:

> Hi,
>
> Eric Abrahamsen <eric@ericabrahamsen.net> writes:
>
>> Currently, if the global variable `org-html-html5-fancy' is t, some
>> elements of HTML export will use fancy elements even when not exporting
>> to HTML5 at all.
>>
>> Specifically, the TITLE of a document will be wrapped in <header> tags,
>> even when exporting to XHTML4. I ran into this while making some epub
>> files and the syntax checker barked at me.
>>
>> This patch fills out the check. There's growing redundancy in this file
>> now -- if it seems desirable to have a `org-html-html5-fancy-p' function
>> that encapsulates the paired checks, I'd be happy to provide that.
>
> Remind me, do we have a "non-fancy" HTML5 mode?
>
> I think it's better to introduce a new function to check if fancy HTML5.
> This would make it easier to adhere to the docstring of
> org-html-html5-fancy:
>
>      "This variable is ignored for anything other than HTML5 export"

Yup, this was the problem. We do have "non-fancy" HTML5: just HTML5
without the use of any of the new elements like <header> or <nav>, which
aren't currently handled right by all browsers. All the various options
make for some fiddly conditionals, but I think it's worth it.

Here's another patch with a new function.

Thanks!
Eric