[wp-trac] [WordPress Trac] #13340: wpautop breaks inline MathML

[WordPress Trac]

#13340: wpautop breaks inline MathML
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 Reporter:  nicholaswilson                |       Owner:  (none)
     Type:  defect (bug)                  |      Status:  reopened
 Priority:  normal                        |   Milestone:  6.2
Component:  Formatting                    |     Version:  2.9.2
 Severity:  normal                        |  Resolution:
 Keywords:  needs-refresh needs-dev-note  |     Focuses:  accessibility
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Changes (by ryokuhi):

 * keywords:   => needs-refresh needs-dev-note
 * type:  enhancement => defect (bug)
 * milestone:  Awaiting Review => 6.2


Comment:

 This ticket was reviewed today during the weekly bug scrub of the
 Accessibility Team.

 The `math` element has a `display` attribute that can be set to either
 `block` or `inline`, allowing the user to decide how the element should be
 treated. By applying the `wpautop` function to all `math` elements,
 WordPress is overriding a choice that should be left to users, displaying
 all `math` elements as block ones.

 After a quick check, it appears that the `math` element, if no `display`
 attribute is set, is displayed as an inline element in Chrome, Edge, and
 Firefox on Windows. If this is the standard behavior, then simply removing
 `math` from `$allblocks` in the `wpautop` function might break the styling
 on websites, as all `math` elements displaying as blocks would be shown as
 inline.

 After a short discussion, the team decided that this should not be a
 blocker to moving this ticket forward: the ticket is now milestoned for
 the next major release, but we're already adding the `needs-dev-note`
 keyword so that users will be aware of this possibly breaking change in
 their layouts.

 I'm also transforming this ticket to a bug since there currently are no
 other ways to add adding formulas to a website that are also accessible.

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Ticket URL: <https://core.trac.wordpress.org/ticket/13340#comment:25>
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