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

[Ihor Radchenko]

Eli Zaretskii <eliz@gnu.org> writes:

>> However, it is not very clear for me how to determine programmatically if
>> given character is displayable in buffer.
>
> Make the char-displayable-p test at run time, I guess, i.e. when you
> are actually about to insert it.

This should indeed be slightly more accurate. However, it will still not
cover scenarios when, for example, an overlay at point has 'face
property that sets a font that is unable to display given char. Or do I
miss something?

-- 
Ihor Radchenko,
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