X-Git-Url: http://git.hcoop.net/bpt/emacs.git/blobdiff_plain/94fbc901707d7c1fd7ec0471d288e585caf59b34..1abfd3e85fa9b340699430cd9e15dd9f0073bdbe:/src/frame.c

diff --git a/src/frame.c b/src/frame.c
index 9c26af819b..0fa821682f 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -4233,6 +4233,16 @@ Setting this variable does not affect existing frames, only new ones.  */);
   Vdefault_frame_scroll_bars = Qnil;
 #endif
 
+  DEFVAR_BOOL ("scroll-bar-adjust-thumb-portion",
+               scroll_bar_adjust_thumb_portion_p,
+               doc: /* Adjust thumb for overscrolling for Gtk+ and MOTIF.
+Non-nil means adjust the thumb in the scroll bar so it can be dragged downwards
+even if the end of the buffer is shown (i.e. overscrolling).
+Set to nil if you want the thumb to be at the bottom when the end of the buffer
+is shown.  Also, the thumb fills the whole scroll bar when the entire buffer
+is visible.  In this case you can not overscroll.  */);
+  scroll_bar_adjust_thumb_portion_p = 1;
+
   DEFVAR_LISP ("terminal-frame", Vterminal_frame,
                doc: /* The initial frame-object, which represents Emacs's stdout.  */);