Give read-expression-history a doc.

* lisp/simple.el (read-expression-history): Remove, it's in minibuf.c.

* src/minibuf.c (syms_of_minibuf) <read-expression-history>:
Give it a doc string.
* src/globals.h: Add Vread_expression_history.

2 files changed, 4 insertions, 2 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 3966debad8b..aff58b8da21 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,7 @@
+2011-01-20  Glenn Morris  <rgm@gnu.org>
+
+        * simple.el (read-expression-history): Remove, it's in minibuf.c.
+
 2011-01-20  Chong Yidong  <cyd@stupidchicken.com>
 
         * subr.el (y-or-n-p): Revert 2011-01-07 change, removing ARGS.
diff --git a/lisp/simple.el b/lisp/simple.el
index 78ba99a5bfd..476d5ab518d 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -1142,8 +1142,6 @@ in *Help* buffer.  See also the command `describe-char'."
   (set-keymap-parent m minibuffer-local-map)
   (setq read-expression-map m))
 
-(defvar read-expression-history nil)
-
 (defvar minibuffer-completing-symbol nil
   "Non-nil means completing a Lisp symbol in the minibuffer.")