RE: How can I enable minor mode, always?

[Drew Adams]

> > I have to manually enable it for each new buffer I open.
>
> How about adding something to after-change-major-mode-hook?  Use the
> add-hook function.

Another suggestion: use `define-globalized-minor-mode' to define a global minor
mode.  `highlight-80+-mode' is apparently a local minor mode.  Just pass it as
the MODE arg to `define-globalized-minor-mode'.