I am hacking a copy of the AMC-mailing.pl script to return the annotated test papers via HTTP PUT. I am trying to take advantage of the debug function provided by AMC::Basic.pm.

As far as I can tell from reading the source, set_debug("foo") should write debugging messages to the file foo if it exists. But --debug=foo on the command line doesn't write any lines to the file foo. So I must be reading it wrong.

My first choice would be to write debugging messages to STDOUT, however. Is there a way do that?