Change customization group to `c' from `C'.

diff --git a/lisp/progmodes/cpp.el b/lisp/progmodes/cpp.el
index 975ca76eac7471d1fe43f665010d22849c4c3e88..172366e2eb304de2474e3e3a9c080c0e564b73ba 100644 (file)
--- a/lisp/progmodes/cpp.el
+++ b/lisp/progmodes/cpp.el
@@ -49,7 +49,7 @@
 ;;; Customization:
 (defgroup cpp nil
   "Highlight or hide text according to cpp conditionals."
-  :group 'C
+  :group 'c
   :prefix "cpp-")
 
 (defcustom cpp-config-file (convert-standard-filename ".cpp.el")