Re: Native line numbers landed on master

[Eli Zaretskii]

> From: Juanma Barranquero <address@hidden>
> Date: Wed, 2 Oct 2019 01:51:17 +0200
> Cc: Lars Ingebrigtsen <address@hidden>, "Yuri D'Elia" <address@hidden>, Eli 
> Zaretskii <address@hidden>, 
>       Emacs developers <address@hidden>
> 
> > 1) I don't have any strong feeling about using one or two values. But in
> > any case they should be configurable. This will add more use cases that
> > could benefit with this and I think it will be simple to implement (just
> > need to add 2 int variables).
> 
> Adding the variables is trivial, yes. The problem is dealing with errors, 
> like the user setting the variables to
> non-numbers, etc. I'm sure we don't want to throw signals there, do we?
> 
> Eli, opinions?

You cannot usefully signal an error from redisplay.  So if the values
don't match expectations, use the hard-coded defaults instead.  If
this is documented ("Any other value is treated as ..."), we are fine.