Not sure what commit caused this, but the generated mailer tests
are failing again (since #4022 generated mailer test failure was addressed), now with:
test_signup(NotificationsTest) [test/functional/notifications_test.rb:10]:
<#<Mail::Message:2215117800, Multipart: false, Headers: <Date: Sun, 21 Mar 2010 22:06:35 -0500>, <From: from@example.com>, <To: to@example.org>, <message-id: <>>, <Subject: Signup>, <Mime-Version: 1.0>, <Content-Type: text/plain; charset=utf-8>, <Content-Transfer-Encoding: 7bit>>> expected but was
<#<Mail::Message:2214939960, Multipart: false, Headers: <Date: Sun, 21 Mar 2010 22:06:35 -0500>, <From: from@example.com>, <To: to@example.org>, <message-id: <>>, <Subject: Signup>, <Mime-Version: 1.0>, <Content-Type: text/plain>, <Content-Transfer-Encoding: 7bit>>>.
I think the offending diff is the inclusion/exclusion
of charset in the Content-Type.
José Valim