Hi,
I am using Symfony 2.8.6, and after creating a new Command, I stumbled upon an unexpected error:

An argument with name "command" already exists.
[Symfony\Component\Console\Exception\LogicException]
An argument with name "command" already exists.

After trying a lot of different solutions, I found out that the error had to do with the option shortcut I used:

$this->setName('my:super:command')
->setAliases(['my:super:commandalias'])
->setDescription('Performs some irrelevant work.')
->addOption('survey', 's', InputOption::VALUE_REQUIRED, 'My option with a shortcut.')

After changing the alias (or setting it to null), the error just stopped popping out.
Is there any obvious reason I am missing here, or is this a bug?
Because to my knowledge "s" is not used anywhere else.

Furthermore, the error is awkwardly cryptic and gave me a hard time debugging this.

Regards,
Nicolas