Fix yasnippet variables, they need to be set in :init

.config/emacs/config.org

@@ -634,9 +634,10 @@ Language Server Protocol.
 #+BEGIN_SRC emacs-lisp
 (use-package yasnippet
   :defer t
-  :config
+  :init
   (setq yas-snippet-dirs (list (concat dot-emacs-dir "/snippets")))
   (setq yas-prompt-functions '(yas-completing-prompt))
+  :config
   (yas-global-mode))
 
 (use-package yasnippet-snippets

.config/emacs/snippets/c++-mode/guard

@@ -3,8 +3,8 @@
 # key: grd
 # --
 #ifndef ${1:GUARD}_H
-#define ${1:$(yas-c++-class-name yas-text)}_H
+#define $1_H
 
 $0
 
-#endif // ${1:$(yas-c++-class-name yas-text)}_H
+#endif // $1_H