Re: kill ring menu

[Richard Stallman]

    > * font-lock-mode, when enabled, will not always use the mechanism in
    >   font-lock.el.  In special buffers, it will just set a flag that
    >   directs the mechanism to insert faces when constructing the text.

    The disadvantage with this approach is that the user couldn't toggle
    fontification on and off by typing 'M-x font-lock-mode' in a special
    buffer; they would have to regenerate the buffer text (e.g. by typing
    'g' in an *Occur* buffer).

M-x font-lock-mode in these buffers could also revert,
so as to reconstruct the text with or without faces.

That is much simpler and much cleaner than the font-core alternative.
It fits the problem exactly.