[wp-trac] [WordPress Trac] #52517: Shortcodes inside AMP tags do not work

[WordPress Trac]

#52517: Shortcodes inside AMP tags do not work
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 Reporter:  Krstarica     |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Formatting    |     Version:  4.7
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by Krstarica):

 I'm not happy with using shortcode as an attribute, but other approaches
 are just way too slow, like parsing HTML.

 It seems that the real issue here is that function wp_kses_attr_parse()
 which finds all attributes of an HTML element does not work properly. It
 assumes hyphen cannot be a part of HTML element.

 All AMP tags (e.g. amp-img, amp-video, amp-audio, amp-iframe, amp-form)
 contain hyphen and all other custom HTML elements:
 https://amp.dev/documentation/guides-and-tutorials/learn/spec/amphtml/
 https://html.spec.whatwg.org/multipage/custom-elements.html

 The consequence is that shortcodes inside such tags do not work.

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Ticket URL: <https://core.trac.wordpress.org/ticket/52517#comment:4>
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