Symfony 5.4 just added support for bash completion to PHP CLI commands using the library so we were able to add a very nice and easy to use interface to Winter CMS to take advantage of it: https://wintercms.com/blog/post/console-improvements-winter-...

Defining completion values for a given argument in a Winter CMS CLI command is as easy as adding a single method to the command's class now:

    public function suggestMyArgumentValues(string $currentValue, array $allInput): array
    {
        return ['array', 'of', 'suggested', 'values'];
    }