[samatman]

That's especially baffling because "Cmd-Shift-." is "Cmd->"

Why wouldn't this just be be "Cmd-."? It doesn't seem to be doing anything, at least on the generation of Finder I just tried it on.

[gshdg]

IIRC "Cmd-." used to be the MacOS equivalent of "Ctrl-C" in a Unix process.