[wp-trac] [WordPress Trac] #25779: wp_notify_moderator() sends multiple emails to the same person if the email addresses are not the same case

[WordPress Trac]

#25779: wp_notify_moderator() sends multiple emails to the same person if the email
addresses are not the same case
--------------------------+-----------------------------
 Reporter:  westi         |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Comments      |    Version:  3.7.1
 Severity:  normal        |   Keywords:  needs-patch
--------------------------+-----------------------------
 In the code we have:

 {{{
 $emails = array( get_option('admin_email') );
 if ( user_can($user->ID, 'edit_comment', $comment_id) &&
 !empty($user->user_email) && ( get_option('admin_email') !=
 $user->user_email) )
     $emails[] = $user->user_email;
 }}}

 If the Post Author's email address is something like {{{Foo at bar.com}}} and
 the admin_email is {{{foo at bar.com}}} then we will send two emails to the
 same person.

 While [http://www.ietf.org/rfc/rfc2821.txt RFC2821] says:

   The local-part of a mailbox MUST BE treated as case sensitive.
 Therefore, SMTP implementations MUST take care to preserve the case of
 mailbox local-parts. Mailbox domains are not case sensitive.

 WordPress already treats email addresses as case insensitive in other
 places and places like gmail does too.

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Ticket URL: <http://core.trac.wordpress.org/ticket/25779>
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