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

From: Eli Zaretskii <[email-masked]>
Date: Sun, 02 Feb 2020 22:09:41 +0200

> Cc: [email-masked]
> From: Raphael 'kena' Poss <[email-masked]>
> Date: Sun, 2 Feb 2020 21:00:53 +0100
> 
> If you are telling me that (compose-region) should never have agreed to
> operate on a range of symbols with different faces, then I have
> counter-evidence that it does. If you are telling me that it shouldn't,
> then maybe that's where the bug really lies.

I'm telling that it cannot work well in these circumstances, and you
shouldn't expect it to.