My previous comment was a bit premature. In addition to upgrading the validator itself, you need to get an external HTML5 validator running. This entails two changes: building/installing the HTML5 validator, and referencing it.
Build instructions are here, however, I have had some difficulties getting this to work: http://about.validator.nu/#src
Afterward, it should just be a matter of adding the following to the bottom of /etc/w3c/validator.conf:
<External> HTML5 = http://localhost:8888/html5/ </External>
My previous comment was a bit premature. In addition to upgrading the validator itself, you need to get an external HTML5 validator running. This entails two changes: building/installing the HTML5 validator, and referencing it.
Build instructions are here, however, I have had some difficulties getting this to work: about.validator .nu/#src
http://
Afterward, it should just be a matter of adding the following to the bottom of /etc/w3c/ validator. conf:
<External> localhost: 8888/html5/
HTML5 = http://
</External>