2 files changed, 7 insertions, 1 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 2d1dd7efc1b..f802d7bb018 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,6 @@
 2009-06-21  Glenn Morris  <rgm@gnu.org>
 
+        * emacs-lisp/lisp-mode.el (lisp-indent-function)
         * emacs-lisp/cl-indent.el (lisp-indent-defun-method)
         (common-lisp-indent-function): Add doc strings.
 
diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el
index 45ed753d37b..ec97a00ab0c 100644
--- a/lisp/emacs-lisp/lisp-mode.el
+++ b/lisp/emacs-lisp/lisp-mode.el
@@ -880,7 +880,12 @@ which see."
 (put 'lisp-body-indent 'safe-local-variable
      (lambda (x) (or (null x) (integerp x))))
 
-(defvar lisp-indent-function 'lisp-indent-function)
+(defvar lisp-indent-function 'lisp-indent-function
+  "A function to be called by `calculate-lisp-indent'.
+It indents the arguments of a Lisp function call.  This function
+should accept two arguments: the indent-point, and the
+`parse-partial-sexp' state at that position.  One option for this
+function is `common-lisp-indent-function'.")
 
 (defun lisp-indent-line (&optional whole-exp)
   "Indent current line as Lisp code.