[XeTeX] Guaranteed Unicode replacement glyph in every TeX installation?

[Janusz S. Bień]

On Sat, Aug 21 2021 at 10:48 +02, Ulrike Fischer wrote:
> Am Fri, 20 Aug 2021 19:45:37 -0600 (MDT) schrieb Doug McKenna:
>
>> Using XeTeX, I want to typeset a LaTeX document into a PDF file. The LaTeX source code in UTF-8 expressly includes the Unicode Replacement character (� = U+FFFD)
>
>> So ... What fixed-width and variable-width OpenType (or other)
>> fonts, if any, are always distributed with TeX or TeXLive or
>> whatever that one can rely upon to be available for placing this
>> particular glyph in a final PDF file? What would be the correct
>> incantation to doing so? 
>
> With a current texlive you can use albatross to find out which fonts
> on your system support this
>
>    albatross -d 0xFFFD

A nice replacement for fc-search-codepoint, as it accept also glyphs as
the arguments.

Best regard

Janusz

-- 
             ,   
Janusz S. Bien
emeryt (emeritus)
https://sites.google.com/view/jsbien