1 files changed, 15 insertions, 8 deletions

diff --git a/lisp/simple.el b/lisp/simple.el
index 956468070da..fbc110fbb29 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -4984,6 +4984,12 @@ value of `completion-common-substring'. See also `display-completion-list'.")
 
 ;; Variables and faces used in `completion-setup-function'.
 
+(defcustom completion-show-help t
+  "Non-nil means show help message in *Completions* buffer."
+  :type 'boolean
+  :version "22.1"
+  :group 'completion)
+
 (defface completions-first-difference
   '((t (:inherit bold)))
   "Face put on the first uncommon character in completions in *Completions* buffer."
@@ -5070,14 +5076,15 @@ of the minibuffer before point is always the common substring.)")
               (if (get-char-property element-common-end 'mouse-face)
                   (put-text-property element-common-end (1+ element-common-end)
                                      'font-lock-face 'completions-first-difference))))))
-      ;; Insert help string.
-      (goto-char (point-min))
-      (if (display-mouse-p)
-          (insert (substitute-command-keys
-                   "Click \\[mouse-choose-completion] on a completion to select it.\n")))
-      (insert (substitute-command-keys
-               "In this buffer, type \\[choose-completion] to \
-select the completion near point.\n\n")))))
+      ;; Maybe insert help string.
+      (when completion-show-help
+        (goto-char (point-min))
+        (if (display-mouse-p)
+            (insert (substitute-command-keys
+                     "Click \\[mouse-choose-completion] on a completion to select it.\n")))
+        (insert (substitute-command-keys
+                 "In this buffer, type \\[choose-completion] to \
+select the completion near point.\n\n"))))))
 
 (add-hook 'completion-setup-hook 'completion-setup-function)