bug#42256: 27.0.50; composition

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: eliz@gnu.org,  rms@gnu.org
> Date: Fri, 10 Jul 2020 02:36:41 +0300
> 
> But I wonder why display combining character names only on TTY frames?

Because font glyphs have no names, at least not names that Emacs knows
about and that could be of use to users.

>   Composed with the following character(s) "́" using this font:
>     x:-misc-fixed-medium-r-normal--15-108-100-100-c-60-iso10646-1
>   by these glyphs:
>     [0 1 97 97 6 0 6 12 3 nil]
>     [0 1 769 769 6 0 6 12 3 [-6 0 0]]
> 
> I don't know what these glyph numbers mean

Which numbers?  If you mean the components of the glyph vectors, see
the doc string of composition-get-gstring.  I don't think the details
of this information is useful for casual users.

> but still no combining character names are displayed on GUI frames.

I don't think I understand what you mean by that.