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authorPhilip Kaludercic <philipk@posteo.net>2022-07-31 14:27:28 +0200
committerPhilip Kaludercic <philipk@posteo.net>2022-07-31 14:27:28 +0200
commit118033294136a8fb3a14347ce190b447dd2ff2fe (patch)
tree3d036aa53a16c1283883b0955cbed77be3295310 /lisp/emacs-lisp/cl-lib.el
parentedd73bd0d5474b71cbd4261c6a722be8f652bb9a (diff)
parentac237334c7672377721e4d27e8ecd6b09d453568 (diff)
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Merge remote-tracking branch 'origin/master' into feature/package+vc
Diffstat (limited to 'lisp/emacs-lisp/cl-lib.el')
-rw-r--r--lisp/emacs-lisp/cl-lib.el10
1 files changed, 8 insertions, 2 deletions
diff --git a/lisp/emacs-lisp/cl-lib.el b/lisp/emacs-lisp/cl-lib.el
index 4e60a3c63d0..3f40ab07605 100644
--- a/lisp/emacs-lisp/cl-lib.el
+++ b/lisp/emacs-lisp/cl-lib.el
@@ -114,7 +114,10 @@ a future Emacs interpreter will be able to use it.")
(defmacro cl-incf (place &optional x)
"Increment PLACE by X (1 by default).
PLACE may be a symbol, or any generalized variable allowed by `setf'.
-The return value is the incremented value of PLACE."
+The return value is the incremented value of PLACE.
+
+If X is specified, it should be an expression that should
+evaluate to a number."
(declare (debug (place &optional form)))
(if (symbolp place)
(list 'setq place (if x (list '+ place x) (list '1+ place)))
@@ -123,7 +126,10 @@ The return value is the incremented value of PLACE."
(defmacro cl-decf (place &optional x)
"Decrement PLACE by X (1 by default).
PLACE may be a symbol, or any generalized variable allowed by `setf'.
-The return value is the decremented value of PLACE."
+The return value is the decremented value of PLACE.
+
+If X is specified, it should be an expression that should
+evaluate to a number."
(declare (debug cl-incf))
(if (symbolp place)
(list 'setq place (if x (list '- place x) (list '1- place)))