[orca-list] a possible bug

[jose vilmar estacio de souza <vilmar informal com br>]

Hi all.
When I call orca using the --replace argument and a wrong argument, orca 
is finished but no error message is announced.
To clarify you can try execute orca using the following:

orca --replace --foo

Orca terminates without a feedback about the error regarding the --foo 
argument.
Thanks.