Ah, ok I see what you mean.
I didn't feel it was necessary to enter into details since it is backwards compatible. But I can add some things to mention that async is now supported in a "first class" sense.
João
On Sat, Jul 4, 2020, 10:31 Eli Zaretskii <
eliz@gnu.org> wrote:
> From: João Távora <joaotavora@gmail.com>
> Date: Sat, 4 Jul 2020 10:21:43 +0100
> Cc: 41531@debbugs.gnu.org, Stefan Monnier <monnier@iro.umontreal.ca>, andreyk.mad@gmail.com,
> dgutov@yandex.ru
>
> I'm surprised the NEWS entry I had written got lost. In the git rebasing,
> maybe.
There is a NEWS entry in the branch, but it only says this:
-*** 'eldoc-documentation-function' is now a user option.
-Modes should use the new hook instead of this user option to register
-their backends.
+*** New user option 'eldoc-documentation-strategy'
+The built-in choices available for this user option let users compose
+the results of 'eldoc-documentation-functions' in various ways. The
+user option replaces 'eldoc-documentation-function', which is now
+obsolete.
I don't see how by reading this anyone could understand that the
change allows significant new functionality. maybe you wrote more
than that, and it did get lost somehow?
(FTR, I did "git diff ...origin/scratch/eldoc-async" to see the
changes on the branch.)