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(defsetf): Improve argument/docstring consistency.

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Juanma Barranquero 2005-06-01 15:33:50 +00:00
parent 859463640a
commit 358e4d6d1d
2 changed files with 12 additions and 2 deletions
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11
lisp/emacs-lisp/cl-macs.el
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@ -1565,14 +1565,21 @@ form. See `defsetf' for a simpler way to define most setf-methods.
This macro is an easy-to-use substitute for `define-setf-method' that works
well for simple place forms. In the simple `defsetf' form, `setf's of
the form (setf (NAME ARGS...) VAL) are transformed to function or macro
calls of the form (FUNC ARGS... VAL). Example: (defsetf aref aset).
calls of the form (FUNC ARGS... VAL). Example:
(defsetf aref aset)
Alternate form: (defsetf NAME ARGLIST (STORE) BODY...).
Here, the above `setf' call is expanded by binding the argument forms ARGS
according to ARGLIST, binding the value form VAL to STORE, then executing
BODY, which must return a Lisp form that does the necessary `setf' operation.
Actually, ARGLIST and STORE may be bound to temporary variables which are
introduced automatically to preserve proper execution order of the arguments.
Example: (defsetf nth (n x) (v) (list 'setcar (list 'nthcdr n x) v))."
Example:
(defsetf nth (n x) (v) (list 'setcar (list 'nthcdr n x) v))
\(fn NAME [FUNC | ARGLIST (STORE) BODY...])"
(if (listp arg1)
(let* ((largs nil) (largsr nil)
(temps nil) (tempsr nil)