With container:debug --parameter="database_name" you can retreive the value of a parameter. This worked in 2.3.9 perfectly. But in 2.4.0 (and up) it doesn't work anymore.
Steps to reproduce:
git clone [email protected]:symfony/symfony-standard.git .
git checkout v2.4.2
composer install
This works great:
$ php app/console container:debug --parameters | grep database_name
database_name symfony
But this doesn't return anything:
$ php app/console container:debug --parameter=database_name