Emacs: Fix locale to C when sorting in sort-lines-unique

.emacs.d/functions.el

@@ -437,7 +437,10 @@ Hook function for skeletons."
 (defun sort-lines-unique ()
   "Remove duplicate lines using shell command `sort -u'."
   (interactive)
-  (call-process-region (point) (mark) "sort" t t nil "-u"))
+  (let ((lcall (getenv "LC_ALL")))
+    (setenv "LC_ALL" "C")
+    (call-process-region (point) (mark) "sort" t t nil "-u")
+    (setenv "LC_ALL" lcall)))
 
 (defun swap-windows ()
   "If you have 2 windows, it swaps them."