Re: Unicode progress tooltip?

[Eli Zaretskii <eliz@gnu.org>]

> From: Skip Montanaro <skip.montanaro@gmail.com>
> Date: Sun, 11 Oct 2020 11:20:48 -0500
> 
> I have a US layout keyboard. I occasionally need to type non-ASCII stuff
> like ¾, ₤ or é. I've now memorized a few Compose key sequences (environment
> is Ubuntu 20.04), but golly gee, there are a lot of them! I noticed that
> when I mash down on the Compose key a little tooltip pops up
> 
> [image: Screenshot from 2020-10-11 10-59-29.png]
> 
> and is extended as more keys are pressed. Once a complete sequence is
> entered, the appropriate glyph is rendered and the tooltip dismissed. This
> is very nice.
> 
> Still, I wonder... Is there a way to get Emacs to display all the
> possibilities for the next key and the resulting glyph? This would be sort
> of like the long press over a key on my Android phone which brings up a
> pop-up menu showing the various related characters you can select. For
> example, after entering Compose L, it appears the "next set" only contains
> eight characters (according to my computer's Compose file). Is there some
> package which can parse the Compose file and present the next characters
> and potentially the final possible glyphs? I poked around in the package
> list on my Emacs install (v 26.3). None of the packages matching the search
> string "unicode" seemed like what I was looking for.

Try

  C-u C-\ TeX RET

and then

  C-h C-\ RET

to see the combinations.