EmailField doesn't support Unicode

[kengruven]

>>> import mongoengine
>>> print(mongoengine.EmailField.EMAIL_REGEX.match("武＠メール.グーグル"))
None

This type of email address is supported by Gmail.

[amcgregor]

E-mail addresses aren't unicode. Even unicode ones aren't unicode, they're punycode IDN-encoded. Regular expressions are a universally terrible method of validating e-mail addresses, as well.

The example e-mail address you have given is actually:

"武"@xn--4dkua4c.xn--qcka1pmc

Which is valid and also doesn't match. Edited to also note that your original @ symbol isn't an ASCII @ symbol.

Ref: http://tools.ietf.org/html/rfc3490 amongst others.

[wojcikstefan]

@kengruven thanks for reporting this! The fix for the issue is in the v0.13.0 release.