>> If you think of non-free in terms of Debian non-free, then non-free >> and proprietary can be different things. That gets into a whole >> different hornets nest. > Evaluate here, please. I honestly can not grasp this concept.
I think he's referring to things like emacs24-common-non-dfsg. IOW, about how the precise definition of "Libre" can change slightly depending on who you ask. Stefan