Valid set commands are never detected as administrivia.

[Mark Sapiro]

The is_administrivia function in Mailman/Utils.py requires a 'set' command to have exactly three arguments and further requires that the second argument be 'on' or 'off' in order to be detected as administrivia. This means that none of the following valid commands are detected.

    set help
    set show [address=<address>]
    set authenticate <password> [address=<address>]
    set<keyword> on
    set <keyword> off
    set digest plain
    set digest mime

Unless the command is

    set authenticate <password> address=<address>

and the password is 'on' or 'off', however a line such as

    set that off topic

would be detected as administrivia even though it is not.

Clearly the intent was to require two arguments, not three, but even this would not detect things like

    set help

or

    set digest plain

The obvious fix is to require between one and two (or maybe three) arguments and to not require the second argument to be 'on' or 'off', but this may wind up giving too many false positives. This bug has existed since the format of the set command was changed in Mailman 2.1, and I'm not aware of any complaints about 'set' not being caught as administrivia, so I'm reluctant to 'rock the boat' too much. Does anyone have an opinion on this?