[Mailman-Users] Duplicate command results

[Stephen J. Turnbull]

Mark Sapiro writes:

 > If you are including the command in both the Subject: and the body, that
 > is why. If the Subject: contains a valid command, it will be executed.
 > Thus a message with 'Subject: help' and 'help' in the body contains two
 > help commands so the command is executed twice.

I don't think this is worth fixing in Mailman 2, but we should try to
ensure idempotence in Mailman 3.