bug#81569: 31.0.90; easy-mmode.el: Zero seems inadvertently removed or omitted from documentation

> From: Stefan Monnier <[email protected]>
> Cc: Eli Zaretskii <[email protected]>,  [email protected]
> Date: Wed, 12 Aug 2026 16:44:13 -0400
> 
> >> Who uses zero, anyway, and why?
> > Regarding this question: There are many cases in the Emacs source code
> > itself where 0 is used to disable a mode, such as for example:
> 
> I think we should fix those because I don't think we should encourage
> this use.

Now done on the master branch, and closing the bug.