Re: toggling a minor mode should not tell Customize that the value has been set

[martin rudalics]

> Putting `customize-customized' on `kill-emacs-query-functions' is analogous
> to Emacs telling you that you have unsaved modified buffers, and asking if
> you want to quit anyway and lose your changes. Toggling a mode variable is
> not an act of customization; there is no loss if you exit without saving the
> latest value.

There is.  Suppose you have done "set for current session only" and some
action changes this to "CHANGED outside Customize; operating on it here
may be unreliable".  When you now exit Emacs you will _not_ get warned
that you have unsaved customizations.