[wp-trac] [WordPress Trac] #15448: wp_mail() sets Content-Type header twice for multipart emails

[WordPress Trac]

#15448: wp_mail() sets Content-Type header twice for multipart emails
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 Reporter:  rmccue                               |       Owner:  SirLouen
     Type:  defect (bug)                         |      Status:  accepted
 Priority:  high                                 |   Milestone:  6.9
Component:  Mail                                 |     Version:  2.8
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch has-unit-tests has-test-   |     Focuses:
  info commit                                    |
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Comment (by SirLouen):

 Replying to [comment:97 wildworks]:
 > This ticket was brought up in today's 6.9 bug scrub.
 >
 > @SirLouen @westonruter It seems that [https://github.com/WordPress
 /wordpress-develop/pull/9500 PR 9500] is being actively updated, but are
 we ready to commit the changes?

 Pretty much ready

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Ticket URL: <https://core.trac.wordpress.org/ticket/15448#comment:98>
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