[wp-trac] [WordPress Trac] #31708: _wp_staticize_emoji_for_email doesn't check for defined key in $mail array.

[WordPress Trac]

#31708: _wp_staticize_emoji_for_email doesn't check for defined key in $mail array.
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 Reporter:  nerrad        |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Mail          |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
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 I think this was added in 4.2 along with the emoji stuff (YAY for emoji!).
 This function should really be checking for whether the `$mail['message']`
 index in the $mail array exists because other wp_mail hooks may be
 swapping out 'message' in favor of some other thing they are doing (in
 which case yes they won't get the emoji's in the content).  It just
 prevents php notices from being thrown and breaking ajax requests using
 wp_mail when WP_DEBUG is on.  In encountered such notice breaking things
 in my testing.

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Ticket URL: <https://core.trac.wordpress.org/ticket/31708>
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