Rule request: Disallow protocolless URLS

[coliff]

URLs without specifying the protocol are regarded as an anti-pattern and advised against in the Google HTML Style Guide: https://google.github.io/styleguide/htmlcssguide.html#Protocol

I'd like to request an option in HTMLHint to disallow protocolless URLs, so that I get a warning if I add for example any of these:

<script src="//ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<link rel="stylesheet" href="//use.fontawesome.com/releases/v5.8.2/css/all.css">

Webhint has this rule:
https://webhint.io/docs/user-guide/hints/hint-no-protocol-relative-urls/

[coliff]

I think this is is still a valid feature request and should remain open.

[coliff]

I think this is is still a valid feature request and should remain open.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[coliff]

I think this is is still a valid feature request and should remain open.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.