Re: visually mark off 80th column?

[Kevin Rodgers]

Brendan Miller wrote:
> vline would be ideal... but I don't see a way to pin highlighting to
> the 80th column.
>
> Based on this thread and some others I've come up with this using the
> highlight-80+ package.
>
> ;; highlight all characters past 80
> (require 'highlight-80+)
> (dolist (hook '(emacs-lisp-mode-hook
>                 cperl-mode-hook
>                 shell-mode-hook
>                 text-mode-hook
>                 change-log-mode-hook
>                 makefile-mode-hook
>                 message-mode-hook
>                 texinfo-mode-hook
>                 c-mode-common-hook
>                 python-mode-hook))
>   (add-hook hook
>             '(lambda () (highlight-80+-mode))))
>
> One minor point, is I really want this to apply to *all* modes, not
> just the ones I thought to list here. Is there any global mode hook
> that applies to everything? The only files I would ever edit with
> emacs would have the 80 line rule apply to them i.e. I don't do word
> processing in emacs.

Some minor modes can be turned on by setting the mode variable (whereas
some can only be turned on by calling the mode function).  So you could
try setting the highlight-80+ mode variable globally, with setq-default.

--
Kevin Rodgers
Denver, Colorado, USA