add wildcard selector for output configuration

[0C3L0T]

I'd like some rules to be applied to all connected outputs, mainly to set the background colour. There doesn't seem to be a wildcard output selector, so I'd like to add it.

Example:

output "DP-2" {
    background-color "#0f0d0a"
}

output "DP-4" {
    background-color "#0f0d0a"
}

into

output "*" {
    background-color "#0f0d0a"
}

I saw this discussion which seems similar, but doesn't suggest wildcard groups.
I'm pretty sure I'm able to implement this, please let me know if there is something you'd like me to take into account.

[YaLTeR]

Right now only one output block applies to any output. This would mean that multiple output blocks can apply to any output. Need to think how to best handle this both design wise and code wise. Especially since it may be breaking if you've got e.g. an output "make model serial" {} block followed by an output "DP-1" {} block, currently only the first one will apply.

[0C3L0T]

What do you currently do when those two match the same output? Do you take whichever one is defined first?

[YaLTeR]

Correct

[0C3L0T]

Then defining the wildcard case last could match all outputs that haven't been matched right? As a sort of 'default' case.

[YaLTeR]

Yes, but what you want here is to match all outputs, including the ones matched prior. Because you want to set the background color for all of them.

[0C3L0T]

hm, right.