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

[Basil L. Contovounesios]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Eli Zaretskii <eliz@gnu.org> writes:
>
>> As for the specific suggestion: it sounds somewhat kludgey to me.  Why
>> not take the Emacsy way: add a defcustom that lists major modes whose
>> users are unlikely to want this mode turned on, and let the default
>> value include the modes you think belong to that group.
>
> Is this how other globalized minor modes work?  I tried poking around
> but couldn't really see any patterns...

Does whitespace-enable-predicate fit the bill?

-- 
Basil