Subject: bug#22169: 25.0.50; File name compiletion doesn't work with non-ASCII characters on OS X

From: Eli Zaretskii <[email-masked]>
Date: Tue, 15 Dec 2015 05:42:26 +0200

> Date: Mon, 14 Dec 2015 23:07:21 +0100
> From: Anders Lindgren <[email-masked]>
> Cc: [email-masked]
> 
>     > What is the value of file-name-coding-system on that system?
>     
> 
> file-name-coding-system
> utf-8-nfd

Where is that defined?

Can you try using utf-8-hfs?  (You might need to load ucs-normalize
first.)