Add a helper function to get the terminal flags.

2 files changed, 27 insertions, 18 deletions

diff --git a/tmux.h b/tmux.h
index 87d38ef3..dbf3244f 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1957,6 +1957,7 @@ int	tty_open(struct tty *, char **);
 void	tty_close(struct tty *);
 void	tty_free(struct tty *);
 void	tty_set_flags(struct tty *, int);
+int	tty_get_flags(struct tty *);
 void	tty_write(void (*)(struct tty *, const struct tty_ctx *),
 	    struct tty_ctx *);
 void	tty_cmd_alignmenttest(struct tty *, const struct tty_ctx *);
diff --git a/tty.c b/tty.c
index 95c16fb8..a068c1a6 100644
--- a/tty.c
+++ b/tty.c
@@ -74,7 +74,7 @@ static void	tty_default_attributes(struct tty *, struct window_pane *,
 		    u_int);
 
 #define tty_use_margin(tty) \
-	((tty->term->flags|tty->term_flags) & TERM_DECSLRM)
+	(tty_get_flags(tty) & TERM_DECSLRM)
 
 #define tty_pane_full_width(tty, ctx) \
 	((ctx)->xoff == 0 && screen_size_x((ctx)->wp->screen) >= (tty)->sx)
@@ -478,6 +478,14 @@ tty_set_flags(struct tty *tty, int flags)
 		tty_puts(tty, "\033[?69h"); /* DECLRMM */
 }
 
+int
+tty_get_flags(struct tty *tty)
+{
+	if (tty->term != NULL)
+		return (tty->term->flags|tty->term_flags);
+	return (tty->term_flags);
+}
+
 void
 tty_raw(struct tty *tty, const char *s)
 {
@@ -575,7 +583,7 @@ tty_putc(struct tty *tty, u_char ch)
 {
 	const char	*acs;
 
-	if ((tty->term->flags & TERM_NOXENL) &&
+	if ((tty_get_flags(tty) & TERM_NOXENL) &&
 	    ch >= 0x20 && ch != 0x7f &&
 	    tty->cy == tty->sy - 1 &&
 	    tty->cx + 1 >= tty->sx)
@@ -601,7 +609,7 @@ tty_putc(struct tty *tty, u_char ch)
 			 * where we think it should be after a line wrap - this
 			 * means it works on sensible terminals as well.
 			 */
-			if (tty->term->flags & TERM_NOXENL)
+			if (tty_get_flags(tty) & TERM_NOXENL)
 				tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
 		} else
 			tty->cx++;
@@ -611,7 +619,7 @@ tty_putc(struct tty *tty, u_char ch)
 void
 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
 {
-	if ((tty->term->flags & TERM_NOXENL) &&
+	if ((tty_get_flags(tty) & TERM_NOXENL) &&
 	    tty->cy == tty->sy - 1 &&
 	    tty->cx + len >= tty->sx)
 		len = tty->sx - tty->cx - 1;
@@ -1167,7 +1175,7 @@ tty_clear_area(struct tty *tty, struct window_pane *wp, u_int py, u_int ny,
 		 * background colour isn't default (because it doesn't work
 		 * after SGR 0).
 		 */
-		if (((tty->term->flags|tty->term_flags) & TERM_DECFRA) &&
+		if ((tty_get_flags(tty) & TERM_DECFRA) &&
 		    !COLOUR_DEFAULT(bg)) {
 			xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
 			    py + 1, px + 1, py + ny, px + nx);
@@ -1429,14 +1437,14 @@ tty_draw_line(struct tty *tty, struct window_pane *wp, struct screen *s,
 void
 tty_sync_start(struct tty *tty)
 {
-	if ((tty->term->flags|tty->term_flags) & TERM_SYNC)
+	if (tty_get_flags(tty) & TERM_SYNC)
 		tty_puts(tty, "\033P=1s\033\\");
 }
 
 void
 tty_sync_end(struct tty *tty)
 {
-	if ((tty->term->flags|tty->term_flags) & TERM_SYNC)
+	if (tty_get_flags(tty) & TERM_SYNC)
 		tty_puts(tty, "\033P=2s\033\\");
 }
 
@@ -1890,7 +1898,7 @@ tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
 	    ctx->xoff + ctx->ocx + ctx->num > ctx->ox + ctx->sx)) {
 		if (!ctx->wrapped ||
 		    !tty_pane_full_width(tty, ctx) ||
-		    (tty->term->flags & TERM_NOXENL) ||
+		    (tty_get_flags(tty) & TERM_NOXENL) ||
 		    ctx->xoff + ctx->ocx != 0 ||
 		    ctx->yoff + ctx->ocy != tty->cy + 1 ||
 		    tty->cx < tty->sx ||
@@ -1951,7 +1959,7 @@ tty_cell(struct tty *tty, const struct grid_cell *gc, struct window_pane *wp)
 	const struct grid_cell	*gcp;
 
 	/* Skip last character if terminal is stupid. */
-	if ((tty->term->flags & TERM_NOXENL) &&
+	if ((tty_get_flags(tty) & TERM_NOXENL) &&
 	    tty->cy == tty->sy - 1 &&
 	    tty->cx == tty->sx - 1)
 		return;
@@ -2110,7 +2118,7 @@ tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
 {
 	if (!ctx->wrapped ||
 	    !tty_pane_full_width(tty, ctx) ||
-	    (tty->term->flags & TERM_NOXENL) ||
+	    (tty_get_flags(tty) & TERM_NOXENL) ||
 	    ctx->xoff + cx != 0 ||
 	    ctx->yoff + cy != tty->cy + 1 ||
 	    tty->cx < tty->sx ||
@@ -2447,14 +2455,14 @@ tty_check_fg(struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
 	/* Is this a 24-bit colour? */
 	if (gc->fg & COLOUR_FLAG_RGB) {
 		/* Not a 24-bit terminal? Translate to 256-colour palette. */
-		if ((tty->term->flags|tty->term_flags) & TERM_RGBCOLOURS)
+		if (tty_get_flags(tty) & TERM_RGBCOLOURS)
 			return;
 		colour_split_rgb(gc->fg, &r, &g, &b);
 		gc->fg = colour_find_rgb(r, g, b);
 	}
 
 	/* How many colours does this terminal have? */
-	if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS)
+	if (tty_get_flags(tty) & TERM_256COLOURS)
 		colours = 256;
 	else
 		colours = tty_term_number(tty->term, TTYC_COLORS);
@@ -2496,14 +2504,14 @@ tty_check_bg(struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
 	/* Is this a 24-bit colour? */
 	if (gc->bg & COLOUR_FLAG_RGB) {
 		/* Not a 24-bit terminal? Translate to 256-colour palette. */
-		if ((tty->term->flags|tty->term_flags) & TERM_RGBCOLOURS)
+		if (tty_get_flags(tty) & TERM_RGBCOLOURS)
 			return;
 		colour_split_rgb(gc->bg, &r, &g, &b);
 		gc->bg = colour_find_rgb(r, g, b);
 	}
 
 	/* How many colours does this terminal have? */
-	if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS)
+	if (tty_get_flags(tty) & TERM_256COLOURS)
 		colours = 256;
 	else
 		colours = tty_term_number(tty->term, TTYC_COLORS);
@@ -2564,7 +2572,7 @@ tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
 
 	/* Is this an aixterm bright colour? */
 	if (gc->fg >= 90 && gc->fg <= 97) {
-		if (tty->term_flags & TERM_256COLOURS) {
+		if (tty_get_flags(tty) & TERM_256COLOURS) {
 			xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
 			tty_puts(tty, s);
 		} else
@@ -2596,7 +2604,7 @@ tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
 
 	/* Is this an aixterm bright colour? */
 	if (gc->bg >= 90 && gc->bg <= 97) {
-		if (tty->term_flags & TERM_256COLOURS) {
+		if (tty_get_flags(tty) & TERM_256COLOURS) {
 			xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
 			tty_puts(tty, s);
 		} else
@@ -2652,7 +2660,7 @@ tty_try_colour(struct tty *tty, int colour, const char *type)
 		 * Also if RGB is set, setaf and setab do not support the 256
 		 * colour palette so use the sequences directly there too.
 		 */
-		if ((tty->term_flags & TERM_256COLOURS) ||
+		if ((tty_get_flags(tty) & TERM_256COLOURS) ||
 		    tty_term_has(tty->term, TTYC_RGB))
 			goto fallback_256;
 
@@ -2660,7 +2668,7 @@ tty_try_colour(struct tty *tty, int colour, const char *type)
 		 * If the terminfo entry has 256 colours and setaf and setab
 		 * exist, assume that they work correctly.
 		 */
-		if (tty->term->flags & TERM_256COLOURS) {
+		if (tty_get_flags(tty) & TERM_256COLOURS) {
 			if (*type == '3') {
 				if (!tty_term_has(tty->term, TTYC_SETAF))
 					goto fallback_256;