bug#65803: 29.1; Noto Sans Mono CJK JP has doubled-width on Windows

[Eli Zaretskii]

> Cc: 65803@debbugs.gnu.org
> Date: Thu, 07 Sep 2023 17:40:29 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> 
> It looks like the Noto font is not a fixed-pitch font, even though it
> has "Mono" in its name.

There seems to be quite a few issues about this font family and its
width aspects:

  https://github.com/adobe-fonts/source-han-code-jp/issues/14
  https://github.com/notofonts/noto-cjk/issues/122
  https://github.com/notofonts/latin-greek-cyrillic/issues/196

I'm not an expert on fonts, but I must ask: why do you use this font
as the _default_ font? isn't it for CJK characters?  If so, why not
use it only for CJK scripts, not for ASCII?

Also, did anything changed wrt this font in Emacs 29?  That is, did
the problem you describe not exist in Emacs 28?