[wp-trac] [WordPress Trac] #61576: HTML API: Improved spec support in 6.7

[WordPress Trac]

#61576: HTML API: Improved spec support in 6.7
-------------------------+--------------------
 Reporter:  dmsnell      |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  6.7
Component:  HTML API     |    Version:  trunk
 Severity:  normal       |   Keywords:
  Focuses:               |
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 The HTML Processor, introduced in #58517, remains a work in progress until
 it fully supports the HTML5 specification, or until all that //will be//
 supported is (there are a few corners of the specification that don't
 obviously fit well into the paradigm, specifically foster parenting and
 some parts of the adoption agency algorithm).

 However, during WordPress 6.7's development cycle it is hoped to rapidly
 add whatever remaining //tag// and //algorithm// support as is able,
 having the refactor during 6.6 (visiting all nodes, real and virtual, from
 #61348) which unclocks most of the remaining rules from a design
 standpoint.

 This is a tracking ticket for that work during this release cycle.

 ----

 == Notable Support

  - SVG and MathML, foreign content: [https://github.com/WordPress
 /wordpress-develop/pull/6006 wordpress-develop#6006]
  - TABLE and table-related elements: [https://github.com/WordPress
 /wordpress-develop/pull/6040 wordpress-develpo#6040]
  - SELECT, OPTION, OPTGROUP: [https://github.com/WordPress/wordpress-
 develop/pull/5908 wordpress-develop#5908]
  - FORM and form-related elements.
  - Deprecated elements.
  - Page-structure elements like HEAD, HTML, IFRAME, META.
  - TEMPLATE
  - PLAINTEXT element: [https://github.com/WordPress/wordpress-
 develop/pull/5905 wordpress-develop#5905]
  - //Reset the insertion mode appropriately//
 [https://github.com/WordPress/wordpress-develop/pull/6020 wordpress-
 develop#6020]
  - //Active format reconstruction// [https://github.com/dmsnell/wordpress-
 develop/pull/13 wordpress-develop#13]
  - //Adoption agency algorithm// [https://github.com/dmsnell/wordpress-
 develop/pull/14 wordpress-develop#14]

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Ticket URL: <https://core.trac.wordpress.org/ticket/61576>
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