[wp-trac] [WordPress Trac] #64418: Valid CSS is causing failure in the Additional CSS panel

[WordPress Trac]

#64418: Valid CSS is causing failure in the Additional CSS panel
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 Reporter:  drw158                               |       Owner:  jonsurrell
     Type:  defect (bug)                         |      Status:  assigned
 Priority:  normal                               |   Milestone:  7.0
Component:  Customize                            |     Version:  4.7
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch has-unit-tests dev-        |     Focuses:  css
  feedback                                       |
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Comment (by jonsurrell):

 In [changeset:"61418" 61418]:
 {{{
 #!CommitTicketReference repository="" revision="61418"
 Use the HTML API to generate style tags.

 The HTML API escapes `<style>` tag contents to ensure the correct HTML
 structure. Common HTML escaping is unsuitable for `<style>` tags because
 they contain "raw text." The additional safety allows other restrictions,
 such as rejecting content with `<>`, to be relaxed or removed because the
 resulting tag will be well-formed.

 Developed in https://github.com/WordPress/wordpress-develop/pull/10656.

 Props jonsurrell, westonruter, dmsnell, ramonopoly, soyebsalar01, drw158,
 sabernhardt.
 See #64418.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/64418#comment:29>
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