1: forge install-plugin arquillian
2. invoke the completer from 'start line' (this works)
arquillian setup --containerName <TAB>
3. invoke the completer from 'question line' (not does work)
arquillian setup <enter>
? [containerName=ARG (of type java.lang.String)]: <TAB>
In step 3 nothing happens. PluginCommandCompleter.complete is never called.