Re: address@hidden: modeline doesn't divulge buffer will go bye bye]

[Richard Stallman]

    >     Maybe we should do just that -- set the buffer-file-name to
    >     /nonexistingdrive/buffername,
    >
    > What is the point in that?  Why not just leave it nil?

    Start emacs -q, create new buffer using C-x b test RET.  Type
    something.  Quit using C-x C-c.  Emacs quits, your edit is lost.

Yes, I understand the goal.  But that is a user-level behavior
you want to change.  There are many ways to do it; making
buffer-file-name non-nil is not a good way.