Re: .emacs-settings.el

[Richard Stallman]

    What about recording a stack of modifications, e.g.

    this variable was created in x.el line 300
    it was modified by Customize in y.el line 400
    it was overridden by a buffer-local version in z.el line 500
    (file and line are not always available)

I think that would be hard to implement
because the necessary data is not known.