[wp-trac] [WordPress Trac] #53070: Establish a Core CSS deprecation path

[WordPress Trac]

#53070: Establish a Core CSS deprecation path
---------------------------+-------------------------------
 Reporter:  isabel_brison  |       Owner:  (none)
     Type:  enhancement    |      Status:  new
 Priority:  normal         |   Milestone:  Awaiting Review
Component:  General        |     Version:
 Severity:  normal         |  Resolution:
 Keywords:                 |     Focuses:  css, performance
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Comment (by ryelle):

 In the PR for #54489, I tried a pass at specifically marking things
 deprecated (and why). For example,

 {{{
 /* @deprecated 5.9.0 -- Button removed from panel. */
 .wp-core-ui .welcome-panel .button.button-hero {
 ...
 }}}

 You can see more deprecated comments [https://github.com/WordPress
 /wordpress-develop/pull/2049/files in the PR itself], the new markup is
 much simpler so it cuts down a lot of CSS. I went with this format because
 it can eventually be read by a script, with the version and description
 separated with double hyphen (inspired by [https://stylelint.io/user-guide
 /ignore-code/ stylelint's ignore comments]).

 I'm not totally sure how it could be used just yet, but I think setting up
 a format like this would be a good start. Even if it never ends up
 scripted, at least having a note about what CSS is still relevant is
 useful.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/53070#comment:20>
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