bug#39390: 28.0.50; prettify-symbols-mode confuses display when start/end faces are different

[Eli Zaretskii]

> From: Tassilo Horn <tsdh@gnu.org>
> Cc: Eli Zaretskii <eliz@gnu.org>,  39390@debbugs.gnu.org
> Date: Mon, 17 Feb 2020 12:17:19 +0100
> 
> Raphael 'kena' Poss <knz@thaumogen.net> writes:
> 
> > https://asciinema.org/a/3nOh1zCJYHOeQ4uXk0rQ9akv8
> 
> No doubt you get strange display effects in your example, but I don't
> know if that can be considered a bug given that your configuration is
> illegal anyway.

You mean "invalid", right? ;-)