Clean up initialization and customization of horizontal scroll bars.

* frame.el (frame-initialize): Remove horizontal-scroll-bars
from frame-initial-frame-alist.
* scroll-bar.el (previous-horizontal-scroll-bar-mode)
(horizontal-scroll-bar-mode-explicit)
(set-horizontal-scroll-bar-mode, get-horizontal-scroll-bar-mode)
(toggle-horizontal-scroll-bar): Remove.
(horizontal-scroll-bar-mode): Remove defcustom.
(horizontal-scroll-bar-mode): Fix doc-string.
(scroll-bar-toolkit-scroll)
(scroll-bar-toolkit-horizontal-scroll): Add doc-strings stubs.
* buffer.c (scroll-bar-height): Fix typo in doc-string.
* frame.c (Vdefault_frame_horizontal_scroll_bars): Remove
variable.
* nsfns.m (Fx_create_frame):
* w32fns.c (Fx_create_frame):
* xfns.c (Fx_create_frame): Default horizontal scroll bars to
nil.

1 files changed, 11 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 1d9f8ca850f..776519fa5cf 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -232,6 +232,17 @@ optional repeat-count argument.
     as the first or last argument of subsequent forms.
 
 
+* Changes in Frames and Windows Code in Emacs 24.5
+
+** Emacs can now draw horizontal scroll bars on some platforms that
+provide toolkit scroll bars, namely Gtk, Lucid, Motif and Windows.
+Horizontal scroll bars are turned off by default.  Use the command
+`horizontal-scroll-bar-mode' to toggle them on all frames; the frame
+parameter `horizontal-scroll-bars' to turn them on/off on individual
+frames; the function `set-window-scroll-bars' to turn them on/off on
+individual windows.
+
+
 * Changes in Emacs 24.5 on Non-Free Operating Systems
 
 ---