[wp-trac] [WordPress Trac] #39320: Add filter hook to username_exists function

[WordPress Trac]

#39320: Add filter hook to username_exists function
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 Reporter:  shamim51                |      Owner:
     Type:  enhancement             |     Status:  new
 Priority:  normal                  |  Milestone:  Awaiting Review
Component:  Login and Registration  |    Version:
 Severity:  normal                  |   Keywords:
  Focuses:                          |
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 Add filter hook to username_exists function to allow plugins to change its
 return value. Sometimes it is needed to reserve some username, this filter
 will allow to reserve username during registration.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39320>
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