There is no tag to open. You can only access them via a smart-search in the Finder – or some other app that is tag-savvy.
You can access Spotlight from the Terminal, so you can search for tagged items with Keyboard Maestro and then display names or paths using a Execute a Shell Script action and mdfind.
The code would be something like this:
mdfind -onlyin / 'kMDItemUserTags == "Current"cd'
You could also have Keyboard Maestro type:
- ⌘⌥Space – To open a global Spotlight search window in the Finder.
- Then
Tag:Current– in the already selected search field.
There's also a tricky way to create a saved search and then cause it to open with AppleScript, but I haven't tested it in years and don't have time to mess with it at present. Take a look at this:
Open a Smart Folder in Finder - #4 by ccstone
-Chris