Notification mail is unavailable for name/usrname@example.org in user's preferences, ticket cc, smtp_always_cc, etc...

[Jun Omae]

The root cause is that RecipientMatcher ignores several email addresses like this:

>>> from trac.test import EnvironmentStub
>>> from trac.notification.mail import RecipientMatcher
>>> env = EnvironmentStub()
>>> matcher = RecipientMatcher(env)
>>> print(matcher.match_recipient('simple@example.org'))
(None, 0, 'simple@example.org')
>>> matcher.is_email('name/surname@example.org')
False
>>> print(matcher.match_recipient('name/surname@example.org'))
None
>>> print(matcher.match_recipient('mailhost!username@example.org'))
None
>>> matcher.is_email('mailhost!username@example.org')
False
>>> print(matcher.match_recipient('user%example.org@example.org'))
None
>>> matcher.is_email('user%example.org@example.org')
False