bug#44232: global-display-fill-column-indicator-mode vs. readonly buffers

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: 44232@debbugs.gnu.org,  jidanni@jidanni.org
> Date: Mon, 26 Oct 2020 20:20:39 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Which means this defcustom is unlike any other: you cannot "M-x
> > customize-variable" it until you load the mode?  That's confusing, I
> > think.
> 
> Is there special magic for defcustoms?

No.

Sorry, I meant the minor-mode variables: those are autoloaded by
define-minor-mode.  So maybe you could teach define-minor-mode to also
autoload the variable generated by :predicate.