zcorpan: Would you be able to run an HTTP Archive query to see how well that 5.7% figure aligns with what HTTP Archive shows?

What’d be even more useful than that figure alone is:

1. What percentage of documents have any void elements?
2. What percentage of the documents that have void elements have any with self-closing tag syntax?

The use counter I put into the HTML checker is not currently able to check how many documents have void elements. It’s instead only currently able just to check how many documents have void elements with self-closing tag syntax.

If I had to, I guess I could hack a temporary use counter into the HTML checker and parser code to also do #1 above — but it’d require bad fuglying up of the parser code in way that I’m hesitant to do, even if temporarily and just on a branch.

So if we can instead get data back from some HTTP Archive queries — and if especially the how-many-docs-have-self-closing-tags query roughly confirms the 5.7% figure I got from the checker use counter — then that’d help to provide some strong evidence.

SELECT
  COUNT(DISTINCT page) AS num
FROM
  `httparchive.sample_data.response_bodies_mobile_10k`
WHERE
  page = url AND
  REGEXP_CONTAINS(body, r'(?i)(<(?:area|base|br|col|embed|hr|img|input|link|meta|source|track|wbr|basefont|bgsound|frame|keygen)(?:\s+(?:[^\/>]|\/[^>])*)?\/>)')