schleuder-conf sub new $listname $address ... throws error
# schleuder-conf sub new test@schleuder3.nadir.org xxx@zeromail.org
/var/lib/gems/2.1.0/gems/schleuder-conf-0.0.1/lib/schleuder-conf/subscriptions.rb:17:in `readable?': no implicit conversion of nil into String (TypeError)
from /var/lib/gems/2.1.0/gems/schleuder-conf-0.0.1/lib/schleuder-conf/subscriptions.rb:17:in `new'
from /var/lib/gems/2.1.0/gems/thor-0.19.1/lib/thor/command.rb:27:in `run'
from /var/lib/gems/2.1.0/gems/thor-0.19.1/lib/thor/invocation.rb:126:in `invoke_command'
from /var/lib/gems/2.1.0/gems/thor-0.19.1/lib/thor.rb:359:in `dispatch'
from /var/lib/gems/2.1.0/gems/thor-0.19.1/lib/thor/invocation.rb:115:in `invoke'
from /var/lib/gems/2.1.0/gems/thor-0.19.1/lib/thor.rb:235:in `block in subcommand'
from /var/lib/gems/2.1.0/gems/thor-0.19.1/lib/thor/command.rb:27:in `run'
from /var/lib/gems/2.1.0/gems/thor-0.19.1/lib/thor/invocation.rb:126:in `invoke_command'
from /var/lib/gems/2.1.0/gems/thor-0.19.1/lib/thor.rb:359:in `dispatch'
from /var/lib/gems/2.1.0/gems/thor-0.19.1/lib/thor/base.rb:440:in `start'
from /var/lib/gems/2.1.0/gems/schleuder-conf-0.0.1/bin/schleuder-conf:7:in `'
from /usr/local/bin/schleuder-conf:23:in `load'
from /usr/local/bin/schleuder-conf:23:in `'