[webkit-dev] Request for position: 'display: list-item' by default for <summary>

[TAMURA, Kent]

Hi,

I'd like to request an official position of WebKit on changing the default '
display' property value of <summary> to 'list-item', and the relevant
changes below:
 - Add 'disclosure-closed' and 'disclosure-open' keywords to '
list-style-type' property
 - Add ::marker pseudo element selector support to <summary>
 - Remove ::-webkit-details-marker pseudo element selector
   [1] is the usage counter for ::-webkit-details-marker, and it shows the
ratio of pages with elements matched to ::-webkit-details-marker in author
stylesheets.  Currently the ratio is 0.0%.

Firefox already shipped all of them.


Specification:
https://html.spec.whatwg.org/C/#the-details-and-summary-elements
Specification:
https://drafts.csswg.org/css-counter-styles-3/#disclosure-open

[1] https://chromestatus.com/metrics/feature/timeline/popularity/3337


-- 
TAMURA Kent
Software Engineer, Google
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