Nuke CLEAR_SCREEN/ENDOFSCREEN and assert scroll region when drawing. These will be reqd for status line(s).

input.c

@@ -1,4 +1,4 @@
-/* $Id: input.c,v 1.9 2007-09-29 09:50:59 nicm Exp $ */
+/* $Id: input.c,v 1.10 2007-09-29 10:57:39 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -764,6 +764,7 @@ void
 input_handle_sequence_ed(struct input_ctx *ictx)
 {
 	uint16_t	n;
+	u_int		i;
 
 	if (ictx->private != '\0')
 		return;
@@ -780,12 +781,21 @@ input_handle_sequence_ed(struct input_ctx *ictx)
 	case 0:
 		screen_fill_end_of_screen(ictx->s, ictx->s->cx, ictx->s->cy,
 		    SCREEN_DEFDATA, ictx->s->attr, ictx->s->colr);
-		input_store_zero(ictx->b, CODE_CLEARENDOFSCREEN);
+		for (i = ictx->s->cy; i < ictx->s->sy; i++) {
+			input_store_zero(ictx->b, CODE_CLEARLINE);
+			input_store_two(ictx->b, CODE_CURSORMOVE, i + 1, 1);
+		}
+		input_store_two(
+		    ictx->b, CODE_CURSORMOVE, ictx->s->cy + 1, ictx->s->cx + 1);
 		break;
 	case 2:
 		screen_fill_screen(
 		    ictx->s, SCREEN_DEFDATA, ictx->s->attr, ictx->s->colr);
-		input_store_zero(ictx->b, CODE_CLEARSCREEN);
+		for (i = 0; i < ictx->s->sy; i++) {
+			input_store_two(ictx->b, CODE_CURSORMOVE, i + 1, 1);
+			input_store_zero(ictx->b, CODE_CLEARLINE);
+		}
+		input_store_two(ictx->b, CODE_CURSORMOVE, 1, 1);
 		break;
 	}
 }
@@ -920,7 +930,7 @@ input_handle_sequence_decstbm(struct input_ctx *ictx)
 	if (input_get_argument(ictx, 1, &m, 1) != 0)
 		return;
 
-	if (n == 0 || n > ictx->s->sy - 1 || m == 0 || m > ictx->s->sx - 1) {
+	if (n == 0 || n > ictx->s->sy || m == 0 || m > ictx->s->sx) {
 		log_debug3("decstbm: out of range: %hu,%hu", m, n);
 		return;
 	}

local.c

@@ -1,4 +1,4 @@
-/* $Id: local.c,v 1.9 2007-09-29 09:53:25 nicm Exp $ */
+/* $Id: local.c,v 1.10 2007-09-29 10:57:39 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -477,20 +477,6 @@ local_output(struct buffer *b, size_t size)
 			}
 			local_putp(tparm(cursor_address, ua - 1, ub - 1));
 			break;
-		case CODE_CLEARENDOFSCREEN:
-			if (clr_eos == NULL) {
-				log_warnx("clr_eos not supported");
-				break;
-			}
-			local_putp(clr_eos);
-			break;
-		case CODE_CLEARSCREEN:
-			if (clear_screen == NULL) {
-				log_warnx("clear_screen not supported");
-				break;
-			}
-			local_putp(clear_screen);
-			break;
 		case CODE_CLEARENDOFLINE:
 			if (clr_eol == NULL) {
 				log_warnx("clr_eol not supported");

screen.c

@@ -1,4 +1,4 @@
-/* $Id: screen.c,v 1.12 2007-09-28 22:47:21 nicm Exp $ */
+/* $Id: screen.c,v 1.13 2007-09-29 10:57:39 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -28,8 +28,6 @@
  * XXX Much of this file sucks.
  */
 
-size_t	 screen_store_attributes(struct buffer *, u_char);
-size_t	 screen_store_colours(struct buffer *, u_char);
 void	 screen_free_lines(struct screen *, u_int, u_int);
 void	 screen_make_lines(struct screen *, u_int, u_int);
 void	 screen_move_lines(struct screen *, u_int, u_int, u_int);
@@ -175,6 +173,8 @@ screen_draw(struct screen *s, struct buffer *b, u_int uy, u_int ly)
 	attr = 0;
 	colr = SCREEN_DEFCOLR;
 
+	input_store_two(b, CODE_SCROLLREGION, 1, s->sy);
+
 	input_store_zero(b, CODE_CURSOROFF);
 
 	input_store_one(b, CODE_ATTRIBUTES, 0);
@@ -192,7 +192,7 @@ screen_draw(struct screen *s, struct buffer *b, u_int uy, u_int ly)
 				attr = s->grid_attr[j][i];
 				n += screen_store_attributes(b, attr);
 				if (attr == 0)
-				colr = SCREEN_DEFCOLR;
+					colr = SCREEN_DEFCOLR;
 			}
 			if (s->grid_colr[j][i] != colr) {
 				colr = s->grid_colr[j][i];

tmux.h

@@ -1,4 +1,4 @@
-/* $Id: tmux.h,v 1.23 2007-09-29 09:53:25 nicm Exp $ */
+/* $Id: tmux.h,v 1.24 2007-09-29 10:57:39 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -238,9 +238,9 @@ struct buffer {
 #define CODE_INSERTLINE 6
 #define CODE_DELETELINE 7
 #define CODE_CLEARLINE 8
-#define CODE_CLEARSCREEN 9
+/* 9 unused */
 #define CODE_CLEARENDOFLINE 10
-#define CODE_CLEARENDOFSCREEN 11
+/* 11 unused */
 #define CODE_CLEARSTARTOFLINE 12
 #define CODE_CURSORMOVE 13
 #define CODE_ATTRIBUTES 14
@@ -568,6 +568,8 @@ void	 input_translate_key(struct buffer *, int);
 void	 screen_create(struct screen *, u_int, u_int);
 void	 screen_resize(struct screen *, u_int, u_int);
 void	 screen_draw(struct screen *, struct buffer *, u_int, u_int);
+size_t	 screen_store_attributes(struct buffer *, u_char);
+size_t	 screen_store_colours(struct buffer *, u_char);
 void	 screen_write_character(struct screen *, u_char);
 void	 screen_insert_lines(struct screen *, u_int, u_int);
 void	 screen_delete_lines(struct screen *, u_int, u_int);