Some elements of [HTML5](http://www.whatwg.org/specs/web-apps/current-work/multipage/) can be safely supported by ikiwiki. There are [several differences between HTML4 and HTML5](http://www.w3.org/TR/html5-diff/). [[!template id=gitbranch branch=hendry/html5 author="[[Kai_Hendry|hendry]]"]] * [HTML5 branch](http://git.webconverger.org/?p=ikiwiki;h=refs/heads/html5) * [ikiwiki instance with HTML5 templates](http://natalian.org) * [HTML5 outliner tool](http://gsnedders.html5.org/outliner/) -- to check you have the structure of your markup correct > Kai, thanks enormously for working on this. I switched a page to > the html5 doctype today, and was rather pleasently suprised that it > validated, except for the new Cache-Control meta tag. Now I see you're > well ahead of me. --[[Joey]] > > So, how should ikiwiki support html5? There are basically 3 approaches: > > 1. Allow users to add html5 tags to their existing xhtml pages. > What has been done so far, can be extended. Basically works > in browsers, if you don't care about standards. A good prerequisite > for anything else, anyway. > 2. Have both a html5 and a xhtml mode, allow user to select. > 3. Switch to html5 in eg, ikiwiki 4; users have to deal with > any custom markup on their pages/templates that breaks then. > > The second option seems fairly tractable from what I see here and in > your branch. You made only relatively minor changes to 10 templates. > It would probably not be too dreadful to put them in ifdefs. I've made a > small start at doing that. > > I've made ikiwiki use the time element and all the new semantic elements > in html5 mode. > > Other ideas: > > * Use details tag instead of the javascript in the toggle plugin. > (Need to wait on browser support probably.) > > --[[Joey]] # htmlscrubber.pm needs to not scrub new HTML5 elements * [new elements](http://www.w3.org/TR/html5-diff/#new-elements) > Many added now. > > Things I left out, too hard to understand today: > Attributes contenteditable, > data-\*, draggable, role, aria-\*. > Tags command, keygen, output. > > Clearly unsafe: embed. > > Apparently cannot be used w/o javascript: menu. > > I have not added the new `ping` attribute, because parsing a > space-separeated list of urls to avoid javascript injection is annoying, > and the attribute seems generally dubious. > --[[Joey]] # HTML5 Validation and t/html.t [validator.nu](http://validator.nu/) is the authorative HTML5 validator, however it is almost impossible to sanely introduce as a build dependency because of its insane Java requirements. :( I test locally via [cURL](http://wiki.whatwg.org/wiki/IDE), though Debian packages cannot be built with a network dependency. In the future, hopefully ikiwiki can test for valid HTML5 using [Relax NG schema](http://syntax.whattf.org/) using a Debian package tool [rnv](http://packages.qa.debian.org/r/rnv.html). > Validation in the test suite is nice, but I am willing to lose those > tests for a while. --[[Joey]] # HTML5 migration issues # [article](http://www.whatwg.org/specs/web-apps/current-work/multipage/semantics.html#the-article-element) element This element is poorly supported by browsers. As a workaround, `style.css` needs: article { display: block; } Internet Explorer will display it as a block, though you can't seem to be able to further control the style. > done (needed for header too) --[[Joey]] ## Time element The [time element](http://www.whatwg.org/specs/web-apps/current-work/multipage/text-level-semantics.html#the-time-element) ideally needs the datatime= attribute set by a template variable with what [HTML5 defines as a valid datetime string](http://www.whatwg.org/specs/web-apps/current-work/multipage/infrastructure.html#valid-global-date-and-time-string). As a workaround: au:~% grep timeformat natalian.setup timeformat => '%Y-%m-%d', > Also, the [[plugins/relativedate]] plugin needs to be updated to > support relatatizing the contents of time elements. --[[Joey]] > Done and done; in html5 mode it uses the time tag, and even > adds pubdate when displaying ctimes. --[[Joey]] ## tidy plugin Will reformat html5 to html4.