bug#10960: linum-mode does not work properly when changing font size

[Eli Zaretskii]

> From: Juanma Barranquero <lekktu@gmail.com>
> Date: Sat, 10 Mar 2012 16:38:14 +0100
> Cc: Stefan Monnier <monnier@iro.umontreal.ca>, 10960@debbugs.gnu.org, 
> l26wang@gmail.com
> 
> On Sat, Mar 10, 2012 at 16:06, Eli Zaretskii <eliz@gnu.org> wrote:
> 
> > OK, let me ask specific questions then:
> 
> In the thread of bug#1255 Stefan already answered what amounts to YES, NO.

Maybe I misunderstood, but that's not what I read there.

> The problem with that answer is that it is maximally unhelpful. Every
> package that wants to use the margin will have to be defensively coded
> against text-scale-*.

If every application that uses display margins will have to do that,
Emacs should do that automatically, IMO.  What would be the reasons
not to?