[wp-trac] [WordPress Trac] #23430: sanitize_user() disallows + in usernames causes problem for email as username

[WordPress Trac]

#23430: sanitize_user() disallows + in usernames causes problem for email as
username
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 Reporter:  jb510        |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  Users        |     Version:  3.5.1
 Severity:  minor        |  Resolution:
 Keywords:  has-patch    |     Focuses:
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Comment (by jb510):

 related: #18658

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Ticket URL: <https://core.trac.wordpress.org/ticket/23430#comment:6>
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