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authorStefan Monnier <monnier@iro.umontreal.ca>2010-04-12 21:03:04 -0400
committerStefan Monnier <monnier@iro.umontreal.ca>2010-04-12 21:03:04 -0400
commit3b7e1d5fe9e2876b870dd49ac459639bad7a7e17 (patch)
treeacb88b083d8eefb0ce7b911690eb48ab55aac012 /lisp/emacs-lisp/easy-mmode.el
parent01f5787b8a4c21a1414e9e5202323d56b4aea3b8 (diff)
downloademacs-3b7e1d5fe9e2876b870dd49ac459639bad7a7e17.tar.gz
(define-minor-mode): A nil argument to the minor mode turns the mode ON.
Diffstat (limited to 'lisp/emacs-lisp/easy-mmode.el')
-rw-r--r--lisp/emacs-lisp/easy-mmode.el13
1 files changed, 4 insertions, 9 deletions
diff --git a/lisp/emacs-lisp/easy-mmode.el b/lisp/emacs-lisp/easy-mmode.el
index 13e08667839..2849f4cf154 100644
--- a/lisp/emacs-lisp/easy-mmode.el
+++ b/lisp/emacs-lisp/easy-mmode.el
@@ -222,15 +222,10 @@ With zero or negative ARG turn mode off.
(interactive (list (or current-prefix-arg 'toggle)))
(let ((,last-message (current-message)))
(setq ,mode
- (cond
- ((eq arg 'toggle) (not ,mode))
- (arg (> (prefix-numeric-value arg) 0))
- (t
- (if (null ,mode) t
- (message
- "Toggling %s off; better pass an explicit argument."
- ',mode)
- nil))))
+ (if (eq arg 'toggle)
+ (not ,mode)
+ ;; A nil argument also means ON now.
+ (> (prefix-numeric-value arg) 0)))
,@body
;; The on/off hooks are here for backward compatibility only.
(run-hooks ',hook (if ,mode ',hook-on ',hook-off))