[wp-trac] [WordPress Trac] #57053: Themes: Support additional link related pseudo classes in `theme.json`.

[WordPress Trac]

#57053: Themes: Support additional link related pseudo classes in `theme.json`.
---------------------------+-----------------------------
 Reporter:  peterwilsoncc  |      Owner:  (none)
     Type:  enhancement    |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  Themes         |    Version:
 Severity:  normal         |   Keywords:  needs-patch
  Focuses:  css            |
---------------------------+-----------------------------
 `class-wp-theme-json.php` is currently missing the `:link` and `:any-link`
 pseudo classes as valid selectors:

 {{{#!php
 <?php
 const VALID_ELEMENT_PSEUDO_SELECTORS = array(
         'link'   => array( ':visited', ':hover', ':focus', ':active' ),
         'button' => array( ':visited', ':hover', ':focus', ':active' ),
 );
 }}}

 `:link` can be used to [https://developer.mozilla.org/en-
 US/docs/Web/CSS/:link style unvisited links] and has wide browser support;
 `:any-link` can be used to [https://developer.mozilla.org/en-
 US/docs/Web/CSS/:any-link style links containing an `href` attribute] but
 is unsupported in Safari browsers.

 Similar to the issue faced in #56928, order is important. These would need
 to be added at the start of the lists.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/57053>
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