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* lisp/emacs-lisp/easy-mmode.el (define-minor-mode): Doc fix.

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Glenn Morris 2012-01-30 20:52:29 -08:00
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commit 60dc267191
2 changed files with 14 additions and 9 deletions
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lisp/ChangeLog
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@ -9,9 +9,9 @@
2012-01-31 Glenn Morris <rgm@gnu.org>
* emacs-lisp/easy-mmode.el (define-minor-mode):
* emacs-lisp/easy-mmode.el (define-minor-mode): Doc fix.
Fix :variable handling of mode a symbol not equal to modefun.
Allow named functions to be used as the cdr of variable:.
Allow named functions to be used as the cdr of :variable.
2012-01-30 Glenn Morris <rgm@gnu.org>

19
lisp/emacs-lisp/easy-mmode.el
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@ -86,7 +86,8 @@ replacing its case-insensitive matches with the literal string in LIGHTER."
;;;###autoload
(defmacro define-minor-mode (mode doc &optional init-value lighter keymap &rest body)
"Define a new minor mode MODE.
This defines the control variable MODE and the toggle command MODE.
This defines the toggle command MODE and (by default) a control variable
MODE (you can override this with the :variable keyword, see below).
DOC is the documentation for the mode toggle command.
Optional INIT-VALUE is the initial value of the mode's variable.
@ -113,15 +114,19 @@ BODY contains code to execute each time the mode is enabled or disabled.
buffer-local, so don't make the variable MODE buffer-local.
By default, the mode is buffer-local.
:init-value VAL Same as the INIT-VALUE argument.
Not used if you also specify :variable.
:lighter SPEC Same as the LIGHTER argument.
:keymap MAP Same as the KEYMAP argument.
:require SYM Same as in `defcustom'.
:variable PLACE The location (as can be used with `setf') to use instead
of the variable MODE to store the state of the mode. PLACE
can also be of the form (GET . SET) where GET is an expression
that returns the current state and SET is a function that takes
a new state and sets it. If you specify a :variable, this
function assumes it is defined elsewhere.
:variable PLACE The location to use instead of the variable MODE to store
the state of the mode. This can be simply a different
named variable, or more generally anything that can be used
with the CL macro `setf'. PLACE can also be of the form
\(GET . SET), where GET is an expression that returns the
current state, and SET is a function that takes one argument,
the new state, and sets it. If you specify a :variable,
this function does not define a MODE variable (nor any of
the terms used in :variable).
For example, you could write
(define-minor-mode foo-mode \"If enabled, foo on you!\"