;; (formerly mode-clone.el)
;; Copyright (C) 1993, 1994, 1999, 2002, 2003, 2004,
-;; 2005 Free Software Foundation, Inc.
+;; 2005, 2006 Free Software Foundation, Inc.
;; Author: David Megginson (dmeggins@aix1.uottawa.ca)
;; Maintainer: FSF
parent child docstring syntax abbrev))
`(progn
- (defvar ,hook nil ,(format "Hook run when entering %s mode." name))
+ (unless (get ',hook 'variable-documentation)
+ (put ',hook 'variable-documentation
+ ,(format "Hook run when entering %s mode.
+No problems result if this variable is not bound.
+`add-hook' automatically binds it. (This is true for all hook variables.)"
+ name)))
+ (unless (boundp ',map)
+ (put ',map 'definition-name ',child))
(defvar ,map (make-sparse-keymap))
,(if declare-syntax
- `(defvar ,syntax (make-syntax-table)))
+ `(progn
+ (unless (boundp ',syntax)
+ (put ',syntax 'definition-name ',child))
+ (defvar ,syntax (make-syntax-table))))
,(if declare-abbrev
- `(defvar ,abbrev
- (progn (define-abbrev-table ',abbrev nil) ,abbrev)))
+ `(progn
+ (put ',abbrev 'definition-name ',child)
+ (defvar ,abbrev
+ (progn (define-abbrev-table ',abbrev nil) ,abbrev))))
(put ',child 'derived-mode-parent ',parent)
,(if group `(put ',child 'custom-mode-group ,group))