bug#57693: 29.0.50; Is there a more reliable version of `char-displayable-p'?

[Ihor Radchenko]

Eli Zaretskii <eliz@gnu.org> writes:

> If the terminal's encoding is UTF-8, and it doesn't support the method
> we use to query about individual glyphs, char-displayable-p may return
> non-nil when the character cannot be displayed, i.e. will show as an
> empty box or something.  Otherwise, char-displayable-p does provide
> the correct answer for TTY frames.

Do I understand correctly that:
1. `font-at' is not sufficient for terminals, and we also need to use
   `char-displayable-p'
2. `char-displayable-p' works on many terminals but may be inaccurate in some

-- 
Ihor Radchenko,
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