Activate save-place-mode with a function in order to work with Emacs 25.
--- a/.emacs-my Mon Jan 09 01:14:56 2017 +0200
+++ b/.emacs-my Mon Jan 09 02:27:39 2017 +0200
@@ -1128,6 +1128,7 @@
(setq-default save-place t)
;; `save-place-file' in ".emacs".
(require 'saveplace)
+(save-place-mode 1) ; For Emacs25.
(require 'dired)