[wp-trac] [WordPress Trac] #27093: Cannot install WordPress when a custom user table is defined

[WordPress Trac]

#27093: Cannot install WordPress when a custom user table is defined
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 Reporter:  johnbillion      |      Owner:
     Type:  defect (bug)     |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  Upgrade/Install  |    Version:  3.7
 Severity:  critical         |   Keywords:  needs-patch
  Focuses:                   |
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 This is a regression in 3.7 caused by r25115.

 Steps to reproduce:

  1. Install WordPress as normal
  2. Prepare a second, separate installation of WordPress by setting up the
 `CUSTOM_USER_TABLE` and `CUSTOM_USER_META_TABLE` constants in the `wp-
 config.php` file so they point to the first installation's users and
 usermeta tables respectively ([http://codex.wordpress.org/Editing_wp-
 config.php#Custom_User_and_Usermeta_Tables more info])
  3. Run the installation of the second install
  4. Note that the installation will abort with the error "Please provide a
 valid username" even though there is no option to do so

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Ticket URL: <https://core.trac.wordpress.org/ticket/27093>
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