This works for manually selected messages, thanks!
But this will hang Mail if I apply it to messages in open mailboxes
(edit a rule, and click OK), but this may be the bug of Mail, cause
the sample script code comes with the system will also crash Mail for
the same situation.
Don't say I didn't warn you. ;-)
I'll wait for a new incoming mail that match this rule to see if it
works, thank you!
I'm afraid this may be similarly doomed, fishy.
I've been described in many ways, but never as a quitter. However,
attempting to script Mail brings me closer than almost any other
pursuit...