[wp-trac] [WordPress Trac] #38897: user_email with & (ampersand) being encoded within the database making notifications fail

[WordPress Trac]

#38897: user_email with & (ampersand) being encoded within the database making
notifications fail
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 Reporter:  garrett-eclipse  |      Owner:
     Type:  defect (bug)     |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  Users            |    Version:  4.6.1
 Severity:  normal           |   Keywords:
  Focuses:                   |
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 Hello,

 It seems Wordpress does some encoding on the email field which causes
 issues as the encoded email is stored in the database and causes
 notifications to fail as it's no longer a valid email.

 The specific email i noticed this with had an ampersand (&) within the
 email, the following is a bogus one to illustrate;
 johnny&joey at telus.net

 This is apparently a valid email according to telus.net (as the email
 exists there, not that exact one of course) and according to IETF Trust as
 shown in this stack overflow answer;
 http://stackoverflow.com/a/2049510

 Anyway, if you register a user with an email containing & it will encode
 it into the database and fail to deliver the password notification.

 The following should NOT be encoded;
 "Characters ! # $ % & ' * + - / = ? ^ _ ` { | } ~
 Character . (dot, period, full stop) provided that it is not the first or
 last character, and provided also that it does not appear two or more
 times consecutively."

 Thank you

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Ticket URL: <https://core.trac.wordpress.org/ticket/38897>
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