(split-window-horizontally): Doc fix.

diff --git a/lisp/window.el b/lisp/window.el
index 1f272364e6cbe28d51bd51394ea4a0f49d79548b..c18dcc41accd7352c2d2664a708ada785366f9cc 100644 (file)
--- a/lisp/window.el
+++ b/lisp/window.el
@@ -217,7 +217,9 @@ new mode line."
   "Split current window into two windows side by side.
 This window becomes the leftmost of the two, and gets ARG columns.
 Negative arg means select the size of the rightmost window instead.
-No arg means split equally."
+The argument includes the width of the window's scroll bar; if there
+are no scroll bars, it includes the width of the divider column
+to the window's right, if any.  No arg means split equally."
   (interactive "P")
   (let ((old-w (selected-window))
        (size (and arg (prefix-numeric-value arg))))