Brandon Richardson <brandon1024.br@xxxxxxxxx> writes: > Please correct me if I'm wrong, but I'm assuming the "UNIX mailbox > format" referenced in the docs refers to the mbox database format > described in appendix A of RFC-4155. If so, since we use a commit id > in place of the sender email address, would that itself be sufficient > to indicate that the output isn't from a real mailbox? A commit id > will never match the addr-spec in RFC-2822, so I figure that anyone > looking at `format-patch` output could safely assume that it did not > originate from a mailbox. I vaguely recall that it was possible for the "From" line that begins each message in a UNIX mbox had a local sender without "@", so it would be a bit wider than addr-spec and a string of raw hexadecimal digits would not sufficiently "strange" enough to serve as a "magic" identifier.