Ulrike Fischer wrote:
With a current texlive you can use albatross to find out which fonts
on your system support this
albatross -d 0xFFFD
I appreciate that this answer may have been targetted solely at Doug
McKenna, but in the general case it does not work. Here, using TeX Live
2021 under Windows 7 Ultimate, the command "albatross" is unknown —
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
d:\Users\Philip Taylor>albatross -d 0xFFFD
'albatross' is not recognized as an internal or external command,
operable program or batch file.
d:\Users\Philip Taylor>
--
/Philip Taylor/