[wp-trac] [WordPress Trac] #17491: Make is_email() compliant with RFC5322 (updated by RFC6854)

[WordPress Trac]

#17491: Make is_email() compliant with RFC5322 (updated by RFC6854)
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 Reporter:  arena                                |       Owner:  (none)
     Type:  defect (bug)                         |      Status:  reopened
 Priority:  normal                               |   Milestone:  Future
                                                 |  Release
Component:  Formatting                           |     Version:  3.1.2
 Severity:  minor                                |  Resolution:
 Keywords:  has-patch dev-feedback needs-unit-   |     Focuses:
  tests is-email                                 |
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Comment (by brobken):

 Replying to [comment:39 brobken]:
 > I'm giving this one a bump as it seems strange that we don't have
 solutions for it yet. So giving my two cents, maybe we should try do this
 in small steps like the one I've created a PR for. More information can be
 found in the PR description on why I've suggested this.
 > Any feedback is welcome!

 An example of the abuse we're having because the registration forms can
 accept this kind of email addresses:
 [[Image()]]

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Ticket URL: <https://core.trac.wordpress.org/ticket/17491#comment:40>
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