[wp-trac] [WordPress Trac] #17890: "Add New Site" screen reports invalid email addresses as missing

[WordPress Trac]

#17890: "Add New Site" screen reports invalid email addresses as missing
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 Reporter:  kawauso        |      Owner:
     Type:  defect (bug)   |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  Network Admin  |    Version:  3.1.3
 Severity:  normal         |   Keywords:
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 The new site user's email is passed through `sanitize_email()` and the
 screen dies with 'Missing email address.' if it's `empty()`.

 `sanitize_email()` returns an empty string (subject to filtering) on
 invalid email addresses however, so the following `is_email()` check for
 invalid email addresses is never even reached.

 '''Steps to reproduce:'''
 1. Add a new site with an email address such as foo at bar

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Ticket URL: <http://core.trac.wordpress.org/ticket/17890>
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