bug#53896: 28.0.91; Icomplete Vertical Mode fails to preview "C-x 8 RET 8072"

[Eli Zaretskii]

> Date: Sun, 13 Feb 2022 14:34:41 +0000 (UTC)
> From: Van Ly <van.ly@sdf.org>
> cc: luangruo@yahoo.com, 53896@debbugs.gnu.org
> 
> > The characters _are_ supported, and we do assign names to them (which
> > are trivially derived from their codepoints), so typing their names is
> > just an unnecessarily complicated way of typing their codepoint.  IOW,
> > why not just type 8072 at "C-x 8 RET"s prompt, instead of selecting
> > "CJK IDEOGRAPH-8072" from a list of 27,000 candidates?
> >
> 
> I do use 8072 at the "C-x 8 RET" prompt.  The problem is it says:
> 
> '''
> Insert character (Unicode name or hex): 8072 [No matches]
> '''
> 
> And, I have to blindly hit RET at that point to insert the U+8072 
> sign.
> 
> What I expect to see is:
> 
> '''
> Insert character (Unicode name or hex): 8072
> 聲 CJK UNIFIED IDEOGRAPH 8072
> '''
> 
> And, I can then either hit RET at the end of 8072 or use the down 
> arrow key to choose that line underneath.

How did you know to type "8072" to begin with?