GNU bug report logs - #36886
26.2; (global-eldoc-mode -1) should disable eldoc completely

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From: Dmitry Gutov <dgutov <at> yandex.ru>
To: "Basil L. Contovounesios" <contovob <at> tcd.ie>, Sanel Zukan <sanelz <at> gmail.com>
Cc: 36886 <at> debbugs.gnu.org
Subject: bug#36886: 26.2; (global-eldoc-mode -1) should disable eldoc completely
Date: Thu, 1 Aug 2019 16:38:28 +0300

On 01.08.2019 14:37, Basil L. Contovounesios wrote:
> Sanel Zukan <sanelz <at> gmail.com> writes:
> 
>> When Emacs is run with (global-eldoc-mode -1), eldoc is not completely
>> disabled because it will show function arguments inside mode-line.
>>
>> I believe intention behind (global-eldoc-mode -1) should be that all
>> eldoc facility gets disabled. Right now, the only way to stop poping
>> stuff in mode-line is this:
>>
>>   (setq-default eldoc-message-function 'ignore)
> 
> CCing Dmitry, who explicitly enabled eldoc-mode in read--expression as
> part of bug#27202: https://debbugs.gnu.org/27202.
> 
> My gut says that bug should be fixable within eldoc.el, without having
> to tweak read--expression, but I'm not familiar with eldoc.

I'm not sure what's the best way. But this should help:

diff --git a/lisp/simple.el b/lisp/simple.el
index 0bc39f08c0..4eec9e732d 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -1583,7 +1583,8 @@ read--expression
           ;; FIXME: call emacs-lisp-mode?
           (add-function :before-until (local 
'eldoc-documentation-function)
                         #'elisp-eldoc-documentation-function)
-          (eldoc-mode 1)
+          (when global-eldoc-mode
+            (eldoc-mode 1))
           (add-hook 'completion-at-point-functions
                     #'elisp-completion-at-point nil t)
           (run-hooks 'eval-expression-minibuffer-setup-hook))

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