Is there a script for making folders open in a new window by default in OS X Yosemite or OS X El Capitan?
Set folders to open in tabs or windows
- In the Finder, choose Finder > Preferences, then click General.
- Select or deselect “Open folders in tabs instead of new windows.”
Open folders in tabs or windows
Press the Command (⌘) key while you double-click the folder.
The folder opens in a new tab or window, depending on your Finder preferences. Tip: If the Finder toolbar and sidebar are hidden, double-clicking a folder without pressing the Command key opens the folder in a new window.
To open a new Finder window without opening a specific folder, choose File > New Finder Window or press Command (⌘)–N.
Info from: OS X Yosemite: Open folders in new Finder tabs or windows
1I don't really want to hold down Command and double click on a folder in order to open it in a new window... Bring back Panther/Lion Finder any time - At least I had control!– RicAug 4, 2017 at 10:30
So I guess the answer is "no" then.