$ lua mult_matrix.lua "--log=root.fmt:[%10.6r]%e(%i:%P@%h)%e%m%n"
> [ 0.000000] (1:Sender@Tremblay) Hello From Sender
> [ 0.000000] (1:Sender@Tremblay) Argc=4 (should be 4)
$ lua mult_matrix.lua "--log=root.fmt:[%10.6r]%e(%i:%P@%h)%e%m%n"
> [ 0.000000] (1:Sender@Tremblay) Hello From Sender
> [ 0.000000] (1:Sender@Tremblay) Argc=4 (should be 4)