===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/screen-write.c,v
retrieving revision 1.4
retrieving revision 1.5
diff -c -r1.4 -r1.5
*** src/usr.bin/tmux/screen-write.c	2009/06/03 23:26:56	1.4
--- src/usr.bin/tmux/screen-write.c	2009/06/03 23:30:40	1.5
***************
*** 1,4 ****
! /* $OpenBSD: screen-write.c,v 1.4 2009/06/03 23:26:56 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
--- 1,4 ----
! /* $OpenBSD: screen-write.c,v 1.5 2009/06/03 23:30:40 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
***************
*** 289,294 ****
--- 289,319 ----
  		return;
  
  	s->cx -= nx;
+ }
+ 
+ /* VT100 alignment test. */
+ void
+ screen_write_alignmenttest(struct screen_write_ctx *ctx)
+ {
+ 	struct screen		*s = ctx->s;
+ 	struct grid_cell       	 gc;
+ 	u_int			 xx, yy;
+ 
+ 	memcpy(&gc, &grid_default_cell, sizeof gc);
+ 	gc.data = 'E';
+ 	
+ 	for (yy = 0; yy < screen_size_y(s); yy++) {
+ 		for (xx = 0; xx < screen_size_x(s); xx++)
+ 			grid_view_set_cell(s->grid, xx, yy, &gc);
+ 	}
+ 	
+ 	s->cx = 0;
+ 	s->cy = 0;
+ 
+ 	s->rupper = 0;
+ 	s->rlower = screen_size_y(s) - 1;
+ 
+ 	tty_write_cmd(ctx->wp, TTY_ALIGNMENTTEST);
  }
  
  /* Insert nx characters. */