Emacs: Suppress some warnings.

init.d/programming/common.el

@@ -1,6 +1,6 @@
 ;;; common.el --- Common programming settings. -*- lexical-binding: t; -*-
 
-;; Time-stamp: <2020-02-02T13:50:15+0100>
+;; Time-stamp: <2020-02-03T15:12:54+0100>
 
 ;;; Commentary:
 
@@ -118,6 +118,10 @@
 (unless slow-computer
   (use-package projectile
     :after (treemacs ivy)
+    :functions (f-directory?
+                treemacs-collapse-other-projects
+                treemacs-toggle-node
+                my/projectile-kill-buffers)
 
     :init
     (defvar my/cmake-compile-command    ; cmake command for compiling with 1