diff options
Diffstat (limited to 'lisp/emacs-lisp/derived.el')
| -rw-r--r-- | lisp/emacs-lisp/derived.el | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lisp/emacs-lisp/derived.el b/lisp/emacs-lisp/derived.el index 3fa3818526c..751291afa88 100644 --- a/lisp/emacs-lisp/derived.el +++ b/lisp/emacs-lisp/derived.el @@ -203,11 +203,13 @@ See Info node `(elisp)Derived Modes' for more details." parent child docstring syntax abbrev)) `(progn - (defvar ,hook nil - ,(format "Hook run after entering %s mode. + (defvar ,hook nil) + (unless (get ',hook 'variable-documentation) + (put ',hook 'variable-documentation + ,(format "Hook run after 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)) + name))) (unless (boundp ',map) (put ',map 'definition-name ',child)) (with-no-warnings (defvar ,map (make-sparse-keymap))) |