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

[Eli Zaretskii]

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Fri, 17 Feb 2023 11:18:45 -0800
> Cc: 57693@debbugs.gnu.org
> 
> Ihor Radchenko <yantar92@gmail.com> writes:
> 
> > I am thinking about something like below (to insert string, not a char),
> >
> > (defun org-insert-displayable (&rest strings)
> [snip]
> 
> Should we put something like this in subr.el or perhaps subr-x.el?

Something like what?  If you want to suggest some specific function,
please show the proposed code, and let's take it from there.
Otherwise, this bug discussion was long and considered several issues,
and it is hard to know what you have in mind.

> I can see a need for it in many more places.  For example, I'm looking
> into improving the header-line-format in calc-mode with some Unicode
> characters instead of a simple en dash (i.e. "‒" instead of "-").

And what is the problem with using char-displayable-p in that case?