bug#46240: Sorting order of read-char-by-name

[Juri Linkov]

> Here's a random idea -- perhaps the output could be formatted
> differently than today (as an option)?  That is, with sections and
> headings?
>
> So
>
> EMOJI
> =====
> 🦸     SUPERHERO
> 🦹     SUPERVILLAIN
> MATH
> ====
> ⁸     SUPERSCRIPT DIGIT EIGHT
> ⁴     SUPERSCRIPT DIGIT FOUR 
> ¹     SUPERSCRIPT DIGIT ONE 
>
> or something?  (I don't know whether we actually have the data to do a
> display like this, though.)

I've implemented this in
https://lists.gnu.org/archive/html/emacs-devel/2020-11/msg00884.html
but the implementation was not too compact,
so I'm not sure if it's worth adding as an option.