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

[Eli Zaretskii]

> From: 積丹尼 Dan Jacobson <jidanni@jidanni.org>
> Cc: larsi@gnus.org,  44232@debbugs.gnu.org
> Date: Tue, 27 Oct 2020 00:25:07 +0800
> 
> >>>>> "EZ" == Eli Zaretskii <eliz@gnu.org> writes:
> >> (Hmmm, (describe-variable 'fill-column) doesn't say what happens when one
> >> makes it nil
> 
> EZ> What do you think happens then?
> 
> No idea. Wish they would document this stuff.

There's nothing to document, AFAICT: the value must be a number.

> >> or how to make it "infinity."
> 
> EZ> What is "infinity" in this context, and why would one need it?
> 
> All I know is I often use C-u 9999 C-x f
> to get the effect I want, as no other way is documented.
> 
> So the fill-column Docstring should say how to make it infinity(=no filling).

There's no such setting; use a value larger than any window, like you
did.