in reply to perl glob
Normally this globbing would be handled by the shell, so your two commands would be
andperl wrapper.pl *.ws
Leaving your script to work its way through @ARGV and process files.perl wrapper.pl test_*.ws
To make it even simpler, you could just replace wrapper.pl with converter.pl, unless the wrapper script is doing something that you haven't shown here.
In Section
Seekers of Perl Wisdom