MediaWiki now accepts out of the box RDFa and Microdata semantic markup

Semantic web

Since MediaWiki 1.16, the software has supported — as an option — RDFa and Microdata HTML semantic attributes.

This commit, integrated to the next release on MediaWiki, 1.27, will embrace more the semantic Web making these attributes always available.

If you wish to use it today, this is already available in our Git repository.

This also simplify slightly the cyclomatic complexity of our parser sanitizer code.

Microdata support will so be available on Wikipedia Thursday, 24 March 2016 and on other projects Thursday, 23 March 2016.

If you already use RDFa today on MediaWiki

First, we would be happy to get feedback, as we’re currently considering an update to RDFa  1.1 and we would like to know who is still in favour to keep RDFa 1.0.

Secondly, there is a small effort of configuration to do: open the source code of your wiki and look the <html> tag.

Copy the content of the version attribute: you should see something like like <html version=HTML+RDFa 1.0">.

Now, edit InitialiseSettings.php (or your wiki farm configuration) and set the $wgHtml5Version setting. For example here, this would be:
$wgHtml5Version="=HTML+RDFa 1.0";

For the microdata, there is nothing special to do.


Let’s encrypt lifts quota by domain for renewal

There is currently a limitation of how many certificates you can register per week: a quota of 5 per domain per week.

The same limitation applied for renewal, which would have forced to maintain a schedule.

This is not the case anymore: if a certificate has already been generated for a specific  FQDN, you can renew it regardless of your quota use. Thank you for Roland Bracewell Shoemaker for this change, which solves this issue.