Make hide-ifdef-mode-prefix-key customisable

* lisp/progmodes/hideif.el (hide-ifdef-mode-prefix-key): Make into
a defcustom since it seems like this is something that should be
user-customisable (bug#8922).

diff --git a/lisp/progmodes/hideif.el b/lisp/progmodes/hideif.el
index 1b06077005c69a6e1b91068081a4c294a20785ec..9fea447e765af38c9553beead8549b26c389bff9 100644 (file)
--- a/lisp/progmodes/hideif.el
+++ b/lisp/progmodes/hideif.el
@@ -112,28 +112,23 @@
 
 (defcustom hide-ifdef-initially nil
   "Non-nil means call `hide-ifdefs' when Hide-Ifdef mode is first activated."
-  :type 'boolean
-  :group 'hide-ifdef)
+  :type 'boolean)
 
 (defcustom hide-ifdef-read-only nil
   "Set to non-nil if you want buffer to be read-only while hiding text."
-  :type 'boolean
-  :group 'hide-ifdef)
+  :type 'boolean)
 
 (defcustom hide-ifdef-lines nil
   "Non-nil means hide the #ifX, #else, and #endif lines."
-  :type 'boolean
-  :group 'hide-ifdef)
+  :type 'boolean)
 
 (defcustom hide-ifdef-shadow nil
   "Non-nil means shadow text instead of hiding it."
   :type 'boolean
-  :group 'hide-ifdef
   :version "23.1")
 
 (defface hide-ifdef-shadow '((t (:inherit shadow)))
   "Face for shadowing ifdef blocks."
-  :group 'hide-ifdef
   :version "23.1")
 
 (defcustom hide-ifdef-exclude-define-regexp nil
@@ -168,7 +163,6 @@ This behavior is generally undesirable.  If this option is non-nil, the outermos
   "C/C++ header file name patterns to determine if current buffer is a header.
 Effective only if `hide-ifdef-expand-reinclusion-protection' is t."
   :type 'string
-  :group 'hide-ifdef
   :version "25.1")
 
 (defvar hide-ifdef-mode-submap
@@ -196,8 +190,10 @@ Effective only if `hide-ifdef-expand-reinclusion-protection' is t."
     map)
   "Keymap used by `hide-ifdef-mode' under `hide-ifdef-mode-prefix-key'.")
 
-(defconst hide-ifdef-mode-prefix-key "\C-c@"
-  "Prefix key for all Hide-Ifdef mode commands.")
+(defcustom hide-ifdef-mode-prefix-key "\C-c@"
+  "Prefix key for all Hide-Ifdef mode commands."
+  :type 'key-sequence
+  :version "27.1")
 
 (defvar hide-ifdef-mode-map
   ;; Set up the mode's main map, which leads via the prefix key to the submap.