[wp-trac] [WordPress Trac] #31992: sanitize_email() and is_email() preg_replace/preg_match problems

[WordPress Trac]

#31992: sanitize_email() and is_email() preg_replace/preg_match problems
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 Reporter:  ysalame            |       Owner:
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Formatting         |     Version:  trunk
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:
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Comment (by jasonhendriks):

 I had looked into email validation when I wrote my SMTP plugin, and
 eventually concluded it is nearly impossible to validate an email address
 at all. Most email validators are much more restrictive than any RFC
 requires.

 I think currently the code doesn't even call sanitize_text_field because
 it failed too many of my test cases.

 https://wordpress.org/plugins/postman-smtp/

 http://girders.org/blog/2013/01/31/dont-rfc-validate-email-addresses/

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Ticket URL: <https://core.trac.wordpress.org/ticket/31992#comment:3>
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