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[CSSWG][selectors-4] Updated WD of Selectors L4

From: fantasai <fantasai.lists@inkedblade.net>
Date: Fri, 6 May 2022 23:56:17 -0400
Message-ID: <4759cd5e-a023-3374-5ba0-3bc5349ed2d6@inkedblade.net>
To: W3C style mailing list <www-style@w3.org>, public-review-announce@w3.org, www-html@w3.org, "public-html@w3.org" <public-html@w3.org>
The CSS WG has published an updated Working Draft of Selectors Level 4:


Selectors are patterns that match against elements in a tree, and are used 
most famously in CSS style rules as well as various Web platform APIs.

This long overdue update adds quite a few new pseudo-classes:
   :defined, :modal, :fullscreen, :picture-in-picture,
   :muted, :volume-locked, :seeking, :buffering, :stalled,
   :autofill, :user-valid

In addition it adjusts the parsing rules for most pseudo-classes such as :is() 
that accept selectors (but not :not()) to ignore invalid selectors in their 
arguments, preventing them from invalidating the entire selector.

Significant changes are all listed at:

Please review the draft, and send any comments to the www-style mailing list,
<www-style@w3.org>, prefixed with [selectors-4] (as I did on this
message) or (preferably) file them in the GitHub repository at

For the CSS WG,
Received on Saturday, 7 May 2022 03:56:39 UTC

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