[wp-trac] [WordPress Trac] #39645: If user "admin" doesn't exist (renamed admin account) users can create a user with username admin

[WordPress Trac]

#39645: If user "admin" doesn't exist (renamed admin account) users can create a
user with username admin
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 Reporter:  jobst         |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Users         |     Version:  4.7.1
 Severity:  normal        |  Resolution:
 Keywords:  has-patch     |     Focuses:
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Comment (by Presskopp):

 @noamcleanforestsolutionscom I don't think we need to use {{{strtolower}}}
 because adMin or aDmIn etc. would not appear to be the real admin account
 imo.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39645#comment:14>
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