===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/grid-view.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -c -r1.8 -r1.9
*** src/usr.bin/tmux/grid-view.c	2009/12/03 22:50:10	1.8
--- src/usr.bin/tmux/grid-view.c	2011/01/25 23:40:26	1.9
***************
*** 1,4 ****
! /* $OpenBSD: grid-view.c,v 1.8 2009/12/03 22:50:10 nicm Exp $ */
  
  /*
   * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
--- 1,4 ----
! /* $OpenBSD: grid-view.c,v 1.9 2011/01/25 23:40:26 nicm Exp $ */
  
  /*
   * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
***************
*** 72,77 ****
--- 72,101 ----
      struct grid *gd, u_int px, u_int py, const struct grid_utf8 *gu)
  {
  	grid_set_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py), gu);
+ }
+ 
+ /* Clear into history. */
+ void
+ grid_view_clear_history(struct grid *gd)
+ {
+ 	struct grid_line	*gl;
+ 	u_int			 yy, last;
+ 
+ 	GRID_DEBUG(gd, "");
+ 
+ 	/* Find the last used line. */
+ 	last = 0;
+ 	for (yy = 0; yy < gd->sy; yy++) {
+ 		gl = &gd->linedata[grid_view_y(gd, yy)];
+ 		if (gl->cellsize != 0 || gl->utf8size != 0)
+ 			last = yy + 1;
+ 	}
+ 	if (last == 0)
+ 		return;
+ 
+ 	/* Scroll the lines into the history. */
+ 	for (yy = 0; yy < last; yy++)
+ 		grid_scroll_history(gd);
  }
  
  /* Clear area. */