bug#40776: no spacing after line number in display-line-numbers-mode

[Eli Zaretskii]

> From: yilkal argaw <yilkalargawworkneh@gmail.com>
> Date: Wed, 22 Apr 2020 17:42:49 +0000
> 
> Currently the first character in a line appears right after the line
> number.

No, it isn't, at least not by default.  There's a single space
character between them.

So if you see something different (try "emacs -Q" first), we will need
a recipe to reproduce what you see.

> It was possible to insert a space in linum-mode using format
> strings but It is not possible to do so in display-line-numbers-mode.

You can control the width of the line-number field, which should
provide the same functionality (if needed).  But it shouldn't be
needed.