Looks fine, but would need, I think, a decent amount of testing:

* In eglot.el, being validated by both Andrii and you for your particular
use cases.
* In bare emacs-lisp-mode, with multiple eldoc-documentation-strategy
options.  It should
  behave exactly the same before and after the patch, as elisp doesn't use
invisible stuff.
* In other situations you can think of.  Like variations on
eldoc-area-use-multiline-p and
  eldoc-echo-area-display-truncation-messages.  Again, here the behaviour
should be
  equivalent pre- and post- patch.

Just noting this because in my memory this code is somewhat hairy.  That
said, the patch "looks" really fine :-)

Thanks,
João

On Sun, Mar 20, 2022 at 12:06 PM Augusto Stoffel <arstoffel@gmail.com>
wrote:

> This should solve the Eglot-related problem described in this Github
> comment:
>
> https://github.com/joaotavora/eglot/issues/865#issuecomment-1065565845
>
>

-- 
João Távora