Re: Verticality and future of display engine and lines (bis) [Was: Re: RTL lines]

[Eli Zaretskii]

> From: Alexandre Garreau <galex-713@galex-713.eu>
> Cc: Eli Zaretskii <eliz@gnu.org>
> Date: Thu, 28 Oct 2021 16:28:39 +0200
> 
> > > For some reason, for me, within emacs, this displays bad: the e is
> > > oversmall, while using combining diacritics displays right: “tiếng
> > > Việt”.
> > Your default font doesn't support Vietnamese; find a better font, if
> > you want Vietnamese text to be displayed without this ugliness.
> 
> Still not a user problem, as one should not have to manually search and 
> gather fonts before to start reading/seeing/discovering a certain script.  
> A such font should be installed by default.

Then take it up with your distro's maintainers.

It's impossible to compose glyphs from different fonts, so if you want
such cases to be handled, you need to make sure you have the suitable
fonts installed and available to Emacs.  There's no way around that.