bug#48902: 28.0.50; Directory names containing apostrophes and backticks cause problems

[Eli Zaretskii]

> Date: Mon, 07 Jun 2021 15:32:10 +0200
> From:  Rudolf Adamkovič via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> 1. Create a directory called "Dubmood - C’etait Mieux En Rda (DATA001)".
> 2. Copy a picture, say "cover.png" into the newly created directory.
> 3. Launch "emacs -Q".
> 3. Open the newly created directory in Dired.
> 4. Press RET on the picture.
> 
> EXPECTED RESULTS:
> 
> Emacs shows the picture.
> 
> ACTUAL RESULTS:
> 
> Emacs shows an empty window.
> 
> NOTES:
> 
> The same problem applies to a folder called "Ultrasyd - L'Épidemie
> Dansante". It seems that both an apostrophe (') and a backtick (`)
> cause problems in both EMMS and Dired.

When you visit that directory in Dired, what is the value of
buffer-file-coding-system in the Dired buffer?

Also, you mention backtick, but there's no such character in the
example you show.