[Emacs-diffs] emacs-26 035d7ac: Prevent eldoc from changing the mode line

[Eli Zaretskii]

branch: emacs-26
commit 035d7ac7e42f1e1e82f4948e19ef8d8188bb902c
Author: Nick Helm <address@hidden>
Commit: Eli Zaretskii <address@hidden>

    Prevent eldoc from changing the mode line
    
    * lisp/emacs-lisp/eldoc.el (eldoc-minibuffer-message): Don't
    change the mode line if it is not displayed.  (Bug#28697)
---
 lisp/emacs-lisp/eldoc.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/emacs-lisp/eldoc.el b/lisp/emacs-lisp/eldoc.el
index cba9a00..ad08977 100644
--- a/lisp/emacs-lisp/eldoc.el
+++ b/lisp/emacs-lisp/eldoc.el
@@ -264,12 +264,13 @@ Otherwise work like `message'."
             (or (window-in-direction 'above (minibuffer-window))
                 (minibuffer-selected-window)
                 (get-largest-window)))
+    (when mode-line-format
          (unless (and (listp mode-line-format)
                       (assq 'eldoc-mode-line-string mode-line-format))
            (setq mode-line-format
                  (list "" '(eldoc-mode-line-string
                             (" " eldoc-mode-line-string " "))
-                       mode-line-format)))
+                       mode-line-format))))
           (setq eldoc-mode-line-string
                 (when (stringp format-string)
                   (apply #'format-message format-string args)))