1 files changed, 124 insertions, 46 deletions

diff --git a/tty.c b/tty.c
index 83ae8282..59ed3bb8 100644
--- a/tty.c
+++ b/tty.c
@@ -43,11 +43,14 @@ void	tty_colours_fg(struct tty *, const struct grid_cell *);
 void	tty_colours_bg(struct tty *, const struct grid_cell *);
 
 int	tty_large_region(struct tty *, const struct tty_ctx *);
+int	tty_fake_bce(const struct tty *, const struct window_pane *);
 void	tty_redraw_region(struct tty *, const struct tty_ctx *);
 void	tty_emulate_repeat(
 	    struct tty *, enum tty_code_code, enum tty_code_code, u_int);
 void	tty_repeat_space(struct tty *, u_int);
-void	tty_cell(struct tty *, const struct grid_cell *);
+void	tty_cell(struct tty *, const struct grid_cell *,
+	    const struct window_pane *);
+void	tty_default_colours(struct grid_cell *, const struct window_pane *);
 
 #define tty_use_acs(tty) \
 	(tty_term_has((tty)->term, TTYC_ACSC) && !((tty)->flags & TTY_UTF8))
@@ -582,6 +585,23 @@ tty_large_region(unused struct tty *tty, const struct tty_ctx *ctx)
 }
 
 /*
+ * Return if BCE is needed but the terminal doesn't have it - it'll need to be
+ * emulated.
+ */
+int
+tty_fake_bce(const struct tty *tty, const struct window_pane *wp)
+{
+	struct grid_cell	gc;
+
+	memcpy(&gc, &grid_default_cell, sizeof gc);
+	tty_default_colours(&gc, wp);
+
+	if (gc.bg == 8 && !(gc.flags & GRID_FLAG_BG256))
+		return (0);
+	return (!tty_term_flag(tty->term, TTYC_BCE));
+}
+
+/*
  * Redraw scroll region using data from screen (already updated). Used when
  * CSR not supported, or window is a pane that doesn't take up the full
  * width of the terminal.
@@ -604,15 +624,23 @@ tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
 
 	if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) {
 		for (i = ctx->ocy; i < screen_size_y(s); i++)
-			tty_draw_line(tty, s, i, ctx->xoff, ctx->yoff);
+			tty_draw_pane(tty, wp, i, ctx->xoff, ctx->yoff);
 	} else {
 		for (i = ctx->orupper; i <= ctx->orlower; i++)
-			tty_draw_line(tty, s, i, ctx->xoff, ctx->yoff);
+			tty_draw_pane(tty, wp, i, ctx->xoff, ctx->yoff);
 	}
 }
 
 void
-tty_draw_line(struct tty *tty, struct screen *s, u_int py, u_int ox, u_int oy)
+tty_draw_pane(struct tty *tty, const struct window_pane *wp, u_int py, u_int ox,
+    u_int oy)
+{
+	tty_draw_line(tty, wp, wp->screen, py, ox, oy);
+}
+
+void
+tty_draw_line(struct tty *tty, const struct window_pane *wp,
+    struct screen *s, u_int py, u_int ox, u_int oy)
 {
 	const struct grid_cell	*gc;
 	struct grid_line	*gl;
@@ -650,20 +678,20 @@ tty_draw_line(struct tty *tty, struct screen *s, u_int py, u_int ox, u_int oy)
 			    ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
 			tmpgc.flags |= s->sel.cell.flags &
 			    (GRID_FLAG_FG256|GRID_FLAG_BG256);
-			tty_cell(tty, &tmpgc);
+			tty_cell(tty, &tmpgc, wp);
 		} else
-			tty_cell(tty, gc);
+			tty_cell(tty, gc, wp);
 	}
 
 	if (sx >= tty->sx) {
 		tty_update_mode(tty, tty->mode, s);
 		return;
 	}
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, wp);
 
 	tty_cursor(tty, ox + sx, oy + py);
 	if (sx != screen_size_x(s) && ox + screen_size_x(s) >= tty->sx &&
-	    tty_term_has(tty->term, TTYC_EL))
+	    tty_term_has(tty->term, TTYC_EL) && !tty_fake_bce(tty, wp))
 		tty_putcode(tty, TTYC_EL);
 	else
 		tty_repeat_space(tty, screen_size_x(s) - sx);
@@ -713,19 +741,19 @@ tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
 	struct window_pane	*wp = ctx->wp;
 
 	if (!tty_pane_full_width(tty, ctx)) {
-		tty_draw_line(tty, wp->screen, ctx->ocy, ctx->xoff, ctx->yoff);
+		tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff);
 		return;
 	}
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, wp);
 
 	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
 
-	if (tty_term_has(tty->term, TTYC_ICH) ||
-	    tty_term_has(tty->term, TTYC_ICH1))
+	if (!tty_fake_bce(tty, wp) && (tty_term_has(tty->term, TTYC_ICH) ||
+	    tty_term_has(tty->term, TTYC_ICH1)))
 		tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
 	else
-		tty_draw_line(tty, wp->screen, ctx->ocy, ctx->xoff, ctx->yoff);
+		tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff);
 }
 
 void
@@ -733,14 +761,14 @@ tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
 {
 	struct window_pane	*wp = ctx->wp;
 
-	if (!tty_pane_full_width(tty, ctx) ||
+	if (!tty_pane_full_width(tty, ctx) || tty_fake_bce(tty, wp) ||
 	    (!tty_term_has(tty->term, TTYC_DCH) &&
 	    !tty_term_has(tty->term, TTYC_DCH1))) {
-		tty_draw_line(tty, wp->screen, ctx->ocy, ctx->xoff, ctx->yoff);
+		tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff);
 		return;
 	}
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, wp);
 
 	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
 
@@ -754,11 +782,11 @@ tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
 {
 	u_int	i;
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, ctx->wp);
 
 	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
 
-	if (tty_term_has(tty->term, TTYC_ECH))
+	if (tty_term_has(tty->term, TTYC_ECH) && !tty_fake_bce(tty, ctx->wp))
 		tty_putcode1(tty, TTYC_ECH, ctx->num);
 	else {
 		for (i = 0; i < ctx->num; i++)
@@ -769,14 +797,14 @@ tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
 void
 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
 {
-	if (!tty_pane_full_width(tty, ctx) ||
+	if (!tty_pane_full_width(tty, ctx) || tty_fake_bce(tty, ctx->wp) ||
 	    !tty_term_has(tty->term, TTYC_CSR) ||
 	    !tty_term_has(tty->term, TTYC_IL1)) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, ctx->wp);
 
 	tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
 	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
@@ -787,14 +815,14 @@ tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
 void
 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
 {
-	if (!tty_pane_full_width(tty, ctx) ||
+	if (!tty_pane_full_width(tty, ctx) || tty_fake_bce(tty, ctx->wp) ||
 	    !tty_term_has(tty->term, TTYC_CSR) ||
 	    !tty_term_has(tty->term, TTYC_DL1)) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, ctx->wp);
 
 	tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
 	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
@@ -808,11 +836,12 @@ tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
 	struct window_pane	*wp = ctx->wp;
 	struct screen		*s = wp->screen;
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, wp);
 
 	tty_cursor_pane(tty, ctx, 0, ctx->ocy);
 
-	if (tty_pane_full_width(tty, ctx) && tty_term_has(tty->term, TTYC_EL))
+	if (tty_pane_full_width(tty, ctx) && !tty_fake_bce(tty, wp) &&
+	    tty_term_has(tty->term, TTYC_EL))
 		tty_putcode(tty, TTYC_EL);
 	else
 		tty_repeat_space(tty, screen_size_x(s));
@@ -824,11 +853,12 @@ tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
 	struct window_pane	*wp = ctx->wp;
 	struct screen		*s = wp->screen;
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, wp);
 
 	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
 
-	if (tty_pane_full_width(tty, ctx) && tty_term_has(tty->term, TTYC_EL))
+	if (tty_pane_full_width(tty, ctx) &&
+	    tty_term_has(tty->term, TTYC_EL) && !tty_fake_bce(tty, wp))
 		tty_putcode(tty, TTYC_EL);
 	else
 		tty_repeat_space(tty, screen_size_x(s) - ctx->ocx);
@@ -837,9 +867,10 @@ tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
 void
 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
 {
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, ctx->wp);
 
-	if (ctx->xoff == 0 && tty_term_has(tty->term, TTYC_EL1)) {
+	if (ctx->xoff == 0 && tty_term_has(tty->term, TTYC_EL1) &&
+	    !tty_fake_bce(tty, ctx->wp)) {
 		tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
 		tty_putcode(tty, TTYC_EL1);
 	} else {
@@ -854,14 +885,14 @@ tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
 	if (ctx->ocy != ctx->orupper)
 		return;
 
-	if (!tty_pane_full_width(tty, ctx) ||
+	if (!tty_pane_full_width(tty, ctx) || tty_fake_bce(tty, ctx->wp) ||
 	    !tty_term_has(tty->term, TTYC_CSR) ||
 	    !tty_term_has(tty->term, TTYC_RI)) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, ctx->wp);
 
 	tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
 	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
@@ -877,7 +908,7 @@ tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
 	if (ctx->ocy != ctx->orlower)
 		return;
 
-	if (!tty_pane_full_width(tty, ctx) ||
+	if (!tty_pane_full_width(tty, ctx) || tty_fake_bce(tty, wp) ||
 	    !tty_term_has(tty->term, TTYC_CSR)) {
 		if (tty_large_region(tty, ctx))
 			wp->flags |= PANE_REDRAW;
@@ -894,7 +925,7 @@ tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
 	if (ctx->num && !(tty->term->flags & TERM_EARLYWRAP))
 		return;
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, wp);
 
 	tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
 	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
@@ -909,12 +940,13 @@ tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
 	struct screen		*s = wp->screen;
 	u_int		 	 i, j;
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, wp);
 
 	tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
 	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
 
-	if (tty_pane_full_width(tty, ctx) && tty_term_has(tty->term, TTYC_EL)) {
+	if (tty_pane_full_width(tty, ctx) &&
+	    tty_term_has(tty->term, TTYC_EL) && !tty_fake_bce(tty, wp)) {
 		tty_putcode(tty, TTYC_EL);
 		if (ctx->ocy != screen_size_y(s) - 1) {
 			tty_cursor_pane(tty, ctx, 0, ctx->ocy + 1);
@@ -942,12 +974,13 @@ tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
 	struct screen		*s = wp->screen;
 	u_int		 	 i, j;
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, wp);
 
 	tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
 	tty_cursor_pane(tty, ctx, 0, 0);
 
-	if (tty_pane_full_width(tty, ctx) && tty_term_has(tty->term, TTYC_EL)) {
+	if (tty_pane_full_width(tty, ctx) &&
+	    tty_term_has(tty->term, TTYC_EL) && !tty_fake_bce(tty, wp)) {
 		for (i = 0; i < ctx->ocy; i++) {
 			tty_putcode(tty, TTYC_EL);
 			tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
@@ -969,12 +1002,13 @@ tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
 	struct screen		*s = wp->screen;
 	u_int		 	 i, j;
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, wp);
 
 	tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
 	tty_cursor_pane(tty, ctx, 0, 0);
 
-	if (tty_pane_full_width(tty, ctx) && tty_term_has(tty->term, TTYC_EL)) {
+	if (tty_pane_full_width(tty, ctx) &&
+	    tty_term_has(tty->term, TTYC_EL) && !tty_fake_bce(tty, wp)) {
 		for (i = 0; i < screen_size_y(s); i++) {
 			tty_putcode(tty, TTYC_EL);
 			if (i != screen_size_y(s) - 1) {
@@ -997,7 +1031,7 @@ tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
 	struct screen		*s = wp->screen;
 	u_int			 i, j;
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, wp);
 
 	tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
 
@@ -1038,12 +1072,12 @@ tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
 			 */
 			cx = screen_size_x(s) - grid_cell_width(&ctx->last_cell);
 			tty_cursor_pane(tty, ctx, cx, ctx->ocy);
-			tty_cell(tty, &ctx->last_cell);
+			tty_cell(tty, &ctx->last_cell, wp);
 		}
 	} else
 		tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
 
-	tty_cell(tty, ctx->cell);
+	tty_cell(tty, ctx->cell, wp);
 }
 
 void
@@ -1055,7 +1089,7 @@ tty_cmd_utf8character(struct tty *tty, const struct tty_ctx *ctx)
 	 * Cannot rely on not being a partial character, so just redraw the
 	 * whole line.
 	 */
-	tty_draw_line(tty, wp->screen, ctx->ocy, ctx->xoff, ctx->yoff);
+	tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff);
 }
 
 void
@@ -1088,12 +1122,13 @@ tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
 	tty->cx = tty->cy = UINT_MAX;
 	tty->rupper = tty->rlower = UINT_MAX;
 
-	tty_reset(tty);
+	tty_attributes(tty, &grid_default_cell, ctx->wp);
 	tty_cursor(tty, 0, 0);
 }
 
 void
-tty_cell(struct tty *tty, const struct grid_cell *gc)
+tty_cell(struct tty *tty, const struct grid_cell *gc,
+    const struct window_pane *wp)
 {
 	struct utf8_data	ud;
 	u_int			i;
@@ -1108,7 +1143,7 @@ tty_cell(struct tty *tty, const struct grid_cell *gc)
 		return;
 
 	/* Set the attributes. */
-	tty_attributes(tty, gc);
+	tty_attributes(tty, gc, wp);
 
 	/* Get the cell and if ASCII write with putc to do ACS translation. */
 	grid_cell_get(gc, &ud);
@@ -1312,12 +1347,14 @@ out:
 }
 
 void
-tty_attributes(struct tty *tty, const struct grid_cell *gc)
+tty_attributes(struct tty *tty, const struct grid_cell *gc,
+    const struct window_pane *wp)
 {
 	struct grid_cell	*tc = &tty->cell, gc2;
 	u_char			 changed;
 
 	memcpy(&gc2, gc, sizeof gc2);
+	tty_default_colours(&gc2, wp);
 
 	/*
 	 * If no setab, try to use the reverse attribute as a best-effort for a
@@ -1610,6 +1647,47 @@ tty_try_256(struct tty *tty, u_char colour, const char *type)
 }
 
 void
+tty_default_colours(struct grid_cell *gc, const struct window_pane *wp)
+{
+	const struct grid_cell        *agc, *pgc, *wgc;
+
+	if (wp == NULL)
+		return;
+
+	pgc = &wp->colgc;
+	agc = options_get_style(&wp->window->options, "window-active-style");
+	wgc = options_get_style(&wp->window->options, "window-style");
+
+	if (gc->fg == 8 && !(gc->flags & GRID_FLAG_FG256)) {
+		if (pgc->fg != 8 || (pgc->flags & GRID_FLAG_FG256)) {
+			gc->fg = pgc->fg;
+			gc->flags |= (pgc->flags & GRID_FLAG_FG256);
+		} else if (wp == wp->window->active &&
+		    (agc->fg != 8 || (agc->flags & GRID_FLAG_FG256))) {
+			gc->fg = agc->fg;
+			gc->flags |= (agc->flags & GRID_FLAG_FG256);
+		} else {
+			gc->fg = wgc->fg;
+			gc->flags |= (wgc->flags & GRID_FLAG_FG256);
+		}
+	}
+
+	if (gc->bg == 8 && !(gc->flags & GRID_FLAG_BG256)) {
+		if (pgc->bg != 8 || (pgc->flags & GRID_FLAG_BG256)) {
+			gc->bg = pgc->bg;
+			gc->flags |= (pgc->flags & GRID_FLAG_BG256);
+		} else if (wp == wp->window->active &&
+		    (agc->bg != 8 || (agc->flags & GRID_FLAG_BG256))) {
+			gc->bg = agc->bg;
+			gc->flags |= (agc->flags & GRID_FLAG_BG256);
+		} else {
+			gc->bg = wgc->bg;
+			gc->flags |= (wgc->flags & GRID_FLAG_BG256);
+		}
+	}
+}
+
+void
 tty_bell(struct tty *tty)
 {
 	tty_putcode(tty, TTYC_BEL);