bug#36886: 26.2; (global-eldoc-mode -1) should disable eldoc completely

[Eli Zaretskii]

> From: "Basil L. Contovounesios" <contovob@tcd.ie>
> Cc: Eli Zaretskii <eliz@gnu.org>,  36886@debbugs.gnu.org
> Date: Fri, 02 Aug 2019 14:44:33 +0300
> 
> The reason it ends up being called in your example is that M-:
> explicitly and unconditionally enables eldoc-mode in the minibuffer.
> 
> Dmitry suggested making this behaviour conditional as a workaround, but
> ultimately it would probably be best to try fixing bug#27202 without
> messing with eldoc-mode in read--expression.

I agree.  Any suggestions?