Subject: bug#36564: 27.0.50; Wrong number of errors in compilation mode-line

From: Juri Linkov <[email-masked]>
Date: Fri, 12 Jul 2019 01:02:27 +0300

>> Often compilation-mode displays wrong number of errors
>> in the mode-line even when compilation is finished.

BTW, there is another problem with notifications in the mode-line.
Recording devices have the record button identified by the red dot
to indicate active recording mode.  But in Emacs keyboard macro
recording is not highlighted in the mode-line and easy to miss.
This patch adds highlighting in the mode-line like on a recording device:

diff --git a/lisp/bindings.el b/lisp/bindings.el
index 5205d497ef..64842c4e1f 100644
--- a/lisp/bindings.el
+++ b/lisp/bindings.el
@@ -655,11 +655,11 @@ minor-mode-alist
 (put 'minor-mode-alist 'risky-local-variable t)
 ;; Don't use purecopy here--some people want to change these strings.
 (setq minor-mode-alist
-      '((abbrev-mode " Abbrev")
+      `((abbrev-mode " Abbrev")
         (overwrite-mode overwrite-mode)
         (auto-fill-function " Fill")
         ;; not really a minor mode...
-        (defining-kbd-macro " Def")))
+        (defining-kbd-macro ,(propertize " Def" 'face 'error))))
 
 ;; These variables are used by autoloadable packages.
 ;; They are defined here so that they do not get overridden