Unless you want the OS to spy on the keyboard this is near-impossible to pull off. And even then it's very hard to do well (backspace, tab auto-completion of paths, copy+paste, etc).

No. The action of pasting or dropping the file is what gives access.

I wasn't saying that to suggest a practical use of this "bug", just to point out that if it were as intentional as the above commend suggested then it should have been expanded to other methods of listing the file directory like typing it in.

You can do this via any file dialog, if you like. I don’t know offhand if Terminal has any open file dialogs, though.