about command does not show variables with null value

[siarheipashkevich]

Is it ok, that the php artisan about command does not show variables with null value?

For example, I set in .env file CACHE_DRIVER=null and this variable is not displayed:

But If I set to another value then it will be displayed:

@jbrooksuk @nunomaduro

[jbrooksuk]

They're filtered out since the drivers wouldn't be enabled.

If this is unexpected, we could show them.

[siarheipashkevich]

I think will be better to show all possible drivers and the values for them.

What do you think?

[henzeb]

Or at least a flag that unhides them