[FIX] base: Make user lookup by email case insensitive.

This avoids user frustration when attempting to reset password
via email address.

odoo/addons/base/models/res_users.py

@@ -31,6 +31,7 @@
 from odoo.osv import expression
 from odoo.service.db import check_super
 from odoo.tools import partition, collections, frozendict, lazy_property, image_process
+from odoo.tools.mail import email_escape_char
 
 _logger = logging.getLogger(__name__)
 
@@ -699,7 +700,7 @@ def _get_login_domain(self, login):
 
     @api.model
     def _get_email_domain(self, email):
-        return [('email', '=', email)]
+        return [('email', '=ilike', email_escape_char(email))]
 
     @api.model
     def _get_login_order(self):

odoo/addons/base/tests/test_res_users.py

@@ -192,3 +192,10 @@ def test_read_group_with_reified_field(self):
         # Verify that the read_group is raising an error if reified field is used as groupby
         with self.assertRaises(ValueError):
             User.read_group([], fnames + [reified_fname], [reified_fname])
+
+    def test_get_email_domain(self):
+        """ Check that _get_email_domain escapes wildcards """
+        User = self.env['res.users']
+        self.assertEqual(User._get_email_domain('\\[email protected]'), [('email', '=ilike', '\\\\[email protected]')], "backslashes should be escaped")
+        self.assertEqual(User._get_email_domain('%[email protected]'), [('email', '=ilike', '\\%[email protected]')], "percents should be escaped")
+        self.assertEqual(User._get_email_domain('[email protected]'), [('email', '=ilike', '\\[email protected]')], "underscores should be escaped")