[whatwg] Allow trailing slash in always-empty HTML5 elements?
lachlan.hunt at lachy.id.au
Sat Dec 2 22:00:07 PST 2006
Mike Schinkel wrote:
> So what guidance would you publish after HTML5 is released with regards to
> people in each of the following situations:
Note: Where I refer to outputting HTML below, I assume the use of
text/html. Where I refer to outputting XHTML below, I assume the use of
an XML MIME type. XHTML5 is not an option for content served as text/html.
> 1.) Currently coding HTML(4) but trying to move to XHTML
Those who are more comfortable with HTML4 will find it easier to move
directly to HTML5. Such authors can choose to migrate to XHTML if they
wish, but to do so requires that they begin authoring using XML tools,
or at least testing in a browser that actually supports XHTML using an
> 2.) Currently coding XHTML and cleaning up only HTML(4)
> 3.) Currently coding only in XHMTL
That depends how they're coding XHTML. If they're making the common
beginner mistake of coding XHTML under text/html conditions (for which
there is significant evidence proving it to be a fatal mistake), then
such authors should migrate to HTML5.
If they're authoring with XML tools under XML conditions, then they may
choose to migrate to XHTML5, but the final decision of what to use would
still depend on how they intend to serve the content.
> 4.) Currently offering a CMS/web app generates HTML(4) using string
> concatonation, with plans to move it to XHTML
> 5.) Currently offering a CMS/web app generates HTML(4) and XHTML both using
> string concatonation
As Henri has outlined in his article on producing XML, using string
concatenation and print statements to produce XML is a mistake.
WordPress and MediaWiki fall into this category and it has proven to be
a fatal architectural flaw in their design. CMSs built like that would
find it easier to migrate to HTML5.
> 6.) Currently offering a CMS/web app generates HTML(4) with string
> concatonation and XHTML with an XML pipeline
CMSs that do use a proper XML pipeline may choose to migrate to XHTML5.
However, such CMSs would, in reality, still be required to be able to
output HTML5 given current browser limitations with XHTML. But rather
than using string concatenation to generate the HTML, it would be more
effective to put an HTML5 serialiser on the end of the XML pipeline to
output HTML5 from the XHTML source.
Authors wishing to output both formats depending on the browsers
support, based on the Accept header, would also need to be aware of the
issues involved with writing scripts and stylesheets that work correctly
in either format, and also aware of the conditions under which
reserialisation as HTML will result in a slightly different document.
e.g. In XHTML:
<p>A paragraph containing
Cannot be accurately represented in the HTML serialisation, as it would
result in the following:
<p>A paragraph containing
If wanting to author in HTML and reserialise as XHTML, there is also an
issue with using the <noscript> element, as it is forbidden in XHTML5.
> 7.) Currently offering a CMS/web app generates XHTML with an XML pipeline
CMSs like that that only output XHTML and do not wish to output HTML may
choose to migrate to XHTML5.
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