===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/window-copy.c,v
retrieving revision 1.19
retrieving revision 1.20
diff -c -r1.19 -r1.20
*** src/usr.bin/tmux/window-copy.c	2009/08/13 22:11:43	1.19
--- src/usr.bin/tmux/window-copy.c	2009/08/13 22:32:18	1.20
***************
*** 1,4 ****
! /* $OpenBSD: window-copy.c,v 1.19 2009/08/13 22:11:43 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
--- 1,4 ----
! /* $OpenBSD: window-copy.c,v 1.20 2009/08/13 22:32:18 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
***************
*** 196,201 ****
--- 196,219 ----
  		n = 1;
  		if (screen_size_y(s) > 2)
  			n = screen_size_y(s) - 2;
+ 		if (data->oy < n)
+ 			data->oy = 0;
+ 		else
+ 			data->oy -= n;
+ 		window_copy_update_selection(wp);
+ 		window_copy_redraw_screen(wp);
+ 		break;
+ 	case MODEKEYCOPY_HALFPAGEUP:
+ 		n = screen_size_y(s) / 2;
+ 		if (data->oy + n > screen_hsize(&wp->base))
+ 			data->oy = screen_hsize(&wp->base);
+ 		else
+ 			data->oy += n;
+ 		window_copy_update_selection(wp);
+ 		window_copy_redraw_screen(wp);
+ 		break;
+ 	case MODEKEYCOPY_HALFPAGEDOWN:
+ 		n = screen_size_y(s) / 2;
  		if (data->oy < n)
  			data->oy = 0;
  		else