Prefer 'frame-parameter' where it is expected to be a bit faster

[gnu-emacs] / lisp / scroll-bar.el

diff --git a/lisp/scroll-bar.el b/lisp/scroll-bar.el
index 635990a782567687d19f82ed453b6940ec6fe921..e5fe31675da3c199c037a80e614f4ae8b1de7214 100644 (file)
--- a/lisp/scroll-bar.el
+++ b/lisp/scroll-bar.el
@@ -1,6 +1,6 @@
 ;;; scroll-bar.el --- window system-independent scroll bar support
 
-;; Copyright (C) 1993-1995, 1999-2015 Free Software Foundation, Inc.
+;; Copyright (C) 1993-1995, 1999-2016 Free Software Foundation, Inc.
 
 ;; Maintainer: emacs-devel@gnu.org
 ;; Keywords: hardware
@@ -148,8 +148,7 @@ created in the future."
   "Return non-nil when horizontal scroll bars are available on this system."
   (and (display-graphic-p)
        (boundp 'x-toolkit-scroll-bars)
-       x-toolkit-scroll-bars
-       (not (eq (window-system) 'ns))))
+       x-toolkit-scroll-bars))
 
 (define-minor-mode horizontal-scroll-bar-mode
   "Toggle horizontal scroll bars on all frames (Horizontal Scroll Bar mode).
@@ -184,9 +183,7 @@ when they are turned on; if it is nil, they go on the left."
   (interactive "P")
   (if (null arg)
       (setq arg
-           (if (cdr (assq 'vertical-scroll-bars
-                          (frame-parameters (selected-frame))))
-               -1 1))
+           (if (frame-parameter nil 'vertical-scroll-bars) -1 1))
     (setq arg (prefix-numeric-value arg)))
   (modify-frame-parameters
    (selected-frame)
@@ -200,9 +197,7 @@ With ARG, turn vertical scroll bars on if and only if ARG is positive."
   (interactive "P")
   (if (null arg)
       (setq arg
-           (if (cdr (assq 'horizontal-scroll-bars
-                          (frame-parameters (selected-frame))))
-               -1 1))
+           (if (frame-parameter nil 'horizontal-scroll-bars) -1 1))
     (setq arg (prefix-numeric-value arg)))
   (modify-frame-parameters
    (selected-frame)