Enable eldoc during eval-expression

emacs/.emacs.d/init.org

@@ -943,6 +943,18 @@
      (global-set-key (kbd "C-c i s") 'delete-string-contents)
    #+END_SRC
 
+* Show eldoc when evaluating expressions
+
+  Thanks to [[http://endlessparentheses.com/sweet-new-features-in-24-4.html][this post]] it was brought to my attention that eldoc mode
+  can be enabled when evaluating expressions using {{{key(M-:)}}}.
+
+  I vaguely remember having had this before, I just don't know how or
+  why it stopped working.
+
+  #+BEGIN_SRC emacs-lisp
+    (add-hook 'eval-expression-minibuffer-setup-hook #'eldoc-mode)
+  #+END_SRC
+
 * Load custom file
 
   I don't really use the Emacs customization interface much, but I