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/