Bug#614351: Do not Cc local-part only e-mail addresses
Do not Cc local-part only e-mail addresses.
I stared at the mountain rising over me. Empty. It was a pointless
thing to have done -- climb up it, across it, and down it. Stupid! It
looked perfect; so clean and untouched, and we had changed nothing.
[...] I had been on it too long, and it had taken everything.
-- Joe Simpson "Touching the Void" p117