https://doc.mapeditor.org/en/stable/manual/worlds/#using-pattern-matching
Looking at this page of the guide. For those of us who either don’t or barely understand regex, it would be super helpful to have an example filename that matches the regex given.
Also, I’m not sure if the example regex handles negative numbers? As I hinted earlier, I barely understand how this works. I ended up changing (\d+) to (-?\d+) to get it working.