# File lib/action_mailer/vendor/tmail/net.rb, line 138 def setup_reply( m ) if tmp = reply_addresses(nil) m.to_addrs = tmp end mid = message_id(nil) tmp = references(nil) || [] tmp.push mid if mid m.in_reply_to = [mid] if mid m.references = tmp unless tmp.empty? m.subject = 'Re: ' + subject('').sub(/\A(?:\s*re:)+/i, '') m end