From a218cf57988e2b6bea59734ea84ddf8a59df14f1 Mon Sep 17 00:00:00 2001
From: Adrian Holovaty <adrian@holovaty.com>
Date: Sun, 6 Nov 2005 22:59:18 +0000
Subject: [PATCH] Fixed #281 -- Made e-mail address validation much more strict
 and accurate.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@1106 bcc190cf-cafb-0310-a4f2-bffc1f526a37
---
 django/core/validators.py | 3 ++-
 docs/model-api.txt        | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/django/core/validators.py b/django/core/validators.py
index 5260fe6b8b..bdcce990f8 100644
--- a/django/core/validators.py
+++ b/django/core/validators.py
@@ -17,7 +17,8 @@ alnumurl_re = re.compile(r'^[\w/]+$')
 ansi_date_re = re.compile('^%s$' % _datere)
 ansi_time_re = re.compile('^%s$' % _timere)
 ansi_datetime_re = re.compile('^%s %s$' % (_datere, _timere))
-email_re = re.compile(r'^[-\w.+]+@\w[\w.-]+$')
+# From http://www.twilightsoul.com/Default.aspx?tabid=134
+email_re = re.compile(r'^((([\t\x20]*[!#-\'\*\+\-/-9=\?A-Z\^-~]+[\t\x20]*|"[\x01-\x09\x0B\x0C\x0E-\x21\x23-\x5B\x5D-\x7F]*")+)?[\t\x20]*<([\t\x20]*[!#-\'\*\+\-/-9=\?A-Z\^-~]+(\.[!#-\'\*\+\-/-9=\?A-Z\^-~]+)*|"[\x01-\x09\x0B\x0C\x0E-\x21\x23-\x5B\x5D-\x7F]*")@(([a-zA-Z0-9][-a-zA-Z0-9]*[a-zA-Z0-9]\.)+[a-zA-Z]{2,}|\[(([0-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}([0-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\])>[\t\x20]*|([\t\x20]*[!#-\'\*\+\-/-9=\?A-Z\^-~]+(\.[!#-\'\*\+\-/-9=\?A-Z\^-~]+)*|"[\x01-\x09\x0B\x0C\x0E-\x21\x23-\x5B\x5D-\x7F]*")@(([a-zA-Z0-9][-a-zA-Z0-9]*[a-zA-Z0-9]\.)+[a-zA-Z]{2,}|\[(([0-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}([0-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\]))$')
 integer_re = re.compile(r'^-?\d+$')
 ip4_re = re.compile(r'^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}$')
 phone_re = re.compile(r'^[A-PR-Y0-9]{3}-[A-PR-Y0-9]{3}-[A-PR-Y0-9]{4}$', re.IGNORECASE)
diff --git a/docs/model-api.txt b/docs/model-api.txt
index b27a298d8e..9922072b8a 100644
--- a/docs/model-api.txt
+++ b/docs/model-api.txt
@@ -244,7 +244,7 @@ Here are all available field types:
 
 ``EmailField``
     A ``CharField`` that checks that the value is a valid e-mail address.
-    (Currently, this is a loose test.) This doesn't accept ``maxlength``.
+    This doesn't accept ``maxlength``.
 
 ``FileField``
     A file-upload field.