From: nicm <nicm@openbsd.org>
Date: Thu, 24 Mar 2022 09:05:57 +0000 (+0000)
Subject: Add a capability for OSC 7 and use it similarly to how the title is set
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=989dfa67a722635dd3e7e8782d75fb857f63e5d3;p=openbsd

Add a capability for OSC 7 and use it similarly to how the title is set
(and controlled by the same set-titles option). GitHub issue 3127.
---

diff --git a/usr.bin/tmux/server-client.c b/usr.bin/tmux/server-client.c
index a3279a4aef2..44a957c5cd7 100644
--- a/usr.bin/tmux/server-client.c
+++ b/usr.bin/tmux/server-client.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: server-client.c,v 1.392 2022/03/08 12:01:19 nicm Exp $ */
+/* $OpenBSD: server-client.c,v 1.393 2022/03/24 09:05:57 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -43,6 +43,7 @@ static void	server_client_check_exit(struct client *);
 static void	server_client_check_redraw(struct client *);
 static void	server_client_check_modes(struct client *);
 static void	server_client_set_title(struct client *);
+static void	server_client_set_path(struct client *);
 static void	server_client_reset_state(struct client *);
 static int	server_client_assume_paste(struct session *);
 static void	server_client_update_latest(struct client *);
@@ -2603,8 +2604,10 @@ server_client_check_redraw(struct client *c)
 	}
 
 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
-		if (options_get_number(s->options, "set-titles"))
+		if (options_get_number(s->options, "set-titles")) {
 			server_client_set_title(c);
+			server_client_set_path(c);
+		}
 		screen_redraw_screen(c);
 	}
 
@@ -2650,6 +2653,26 @@ server_client_set_title(struct client *c)
 	format_free(ft);
 }
 
+/* Set client path. */
+static void
+server_client_set_path(struct client *c)
+{
+	struct session	*s = c->session;
+	const char	*path;
+
+	if (s->curw == NULL)
+		return;
+	if (s->curw->window->active->base.path == NULL)
+		path = "";
+	else
+		path = s->curw->window->active->base.path;
+	if (c->path == NULL || strcmp(path, c->path) != 0) {
+		free(c->path);
+		c->path = xstrdup(path);
+		tty_set_path(&c->tty, c->path);
+	}
+}
+
 /* Dispatch message from client. */
 static void
 server_client_dispatch(struct imsg *imsg, void *arg)
diff --git a/usr.bin/tmux/tmux.1 b/usr.bin/tmux/tmux.1
index 5a2a50e78b5..52f4aaf44ac 100644
--- a/usr.bin/tmux/tmux.1
+++ b/usr.bin/tmux/tmux.1
@@ -1,4 +1,4 @@
-.\" $OpenBSD: tmux.1,v 1.884 2022/03/17 11:35:37 nicm Exp $
+.\" $OpenBSD: tmux.1,v 1.885 2022/03/24 09:05:57 nicm Exp $
 .\"
 .\" Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 .\"
@@ -14,7 +14,7 @@
 .\" IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 .\" OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: March 17 2022 $
+.Dd $Mdocdate: March 24 2022 $
 .Dt TMUX 1
 .Os
 .Sh NAME
@@ -3624,6 +3624,8 @@ Supports DECSLRM margins.
 Supports
 .Xr xterm 1
 mouse sequences.
+.It osc7
+Supports the OSC 7 working directory extension.
 .It overline
 Supports the overline SGR attribute.
 .It rectfill
@@ -6391,6 +6393,11 @@ $ printf '\e033[4 q'
 If
 .Em Se
 is not set, \&Ss with argument 0 will be used to reset the cursor style instead.
+.It Em \&Swd
+Set the opening sequence for the working directory notification.
+The sequence is terminated using the standard
+.Em fsl
+capability.
 .It Em \&Sync
 Start (parameter is 1) or end (parameter is 2) a synchronized update.
 .It Em \&Tc
diff --git a/usr.bin/tmux/tmux.h b/usr.bin/tmux/tmux.h
index be87e87d8e4..8095c3aa0d0 100644
--- a/usr.bin/tmux/tmux.h
+++ b/usr.bin/tmux/tmux.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: tmux.h,v 1.1165 2022/03/16 17:00:17 nicm Exp $ */
+/* $OpenBSD: tmux.h,v 1.1166 2022/03/24 09:05:57 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -539,6 +539,7 @@ enum tty_code_code {
 	TTYC_SMULX,
 	TTYC_SMXX,
 	TTYC_SS,
+	TTYC_SWD,
 	TTYC_SYNC,
 	TTYC_TC,
 	TTYC_TSL,
@@ -1708,6 +1709,7 @@ struct client {
 	struct format_job_tree	*jobs;
 
 	char			*title;
+	char			*path;
 	const char		*cwd;
 
 	char			*term_name;
@@ -2258,6 +2260,7 @@ void	tty_start_tty(struct tty *);
 void	tty_send_requests(struct tty *);
 void	tty_stop_tty(struct tty *);
 void	tty_set_title(struct tty *, const char *);
+void	tty_set_path(struct tty *, const char *);
 void	tty_update_mode(struct tty *, int, struct screen *);
 void	tty_draw_line(struct tty *, struct screen *, u_int, u_int, u_int,
 	    u_int, u_int, const struct grid_cell *, struct colour_palette *);
diff --git a/usr.bin/tmux/tty-features.c b/usr.bin/tmux/tty-features.c
index 6cf94ffcd9c..514dd8722ef 100644
--- a/usr.bin/tmux/tty-features.c
+++ b/usr.bin/tmux/tty-features.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tty-features.c,v 1.21 2021/12/21 14:57:28 nicm Exp $ */
+/* $OpenBSD: tty-features.c,v 1.22 2022/03/24 09:05:57 nicm Exp $ */
 
 /*
  * Copyright (c) 2020 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -53,6 +53,18 @@ static const struct tty_feature tty_feature_title = {
 	0
 };
 
+/* Terminal has OSC 7 working directory. */
+static const char *tty_feature_osc7_capabilities[] = {
+	"Swd=\\E]7;",
+	"fsl=\\a",
+	NULL
+};
+static const struct tty_feature tty_feature_osc7 = {
+	"osc7",
+	tty_feature_osc7_capabilities,
+	0
+};
+
 /* Terminal has mouse support. */
 static const char *tty_feature_mouse_capabilities[] = {
 	"kmous=\\E[M",
@@ -249,6 +261,7 @@ static const struct tty_feature *tty_features[] = {
 	&tty_feature_focus,
 	&tty_feature_margins,
 	&tty_feature_mouse,
+	&tty_feature_osc7,
 	&tty_feature_overline,
 	&tty_feature_rectfill,
 	&tty_feature_rgb,
diff --git a/usr.bin/tmux/tty-term.c b/usr.bin/tmux/tty-term.c
index b105008f078..36e3f2bb162 100644
--- a/usr.bin/tmux/tty-term.c
+++ b/usr.bin/tmux/tty-term.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tty-term.c,v 1.91 2021/08/25 07:37:20 nicm Exp $ */
+/* $OpenBSD: tty-term.c,v 1.92 2022/03/24 09:05:57 nicm Exp $ */
 
 /*
  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -274,6 +274,7 @@ static const struct tty_term_code_entry tty_term_codes[] = {
 	[TTYC_SMUL] = { TTYCODE_STRING, "smul" },
 	[TTYC_SMXX] =  { TTYCODE_STRING, "smxx" },
 	[TTYC_SS] = { TTYCODE_STRING, "Ss" },
+	[TTYC_SWD] = { TTYCODE_STRING, "Swd" },
 	[TTYC_SYNC] = { TTYCODE_STRING, "Sync" },
 	[TTYC_TC] = { TTYCODE_FLAG, "Tc" },
 	[TTYC_TSL] = { TTYCODE_STRING, "tsl" },
diff --git a/usr.bin/tmux/tty.c b/usr.bin/tmux/tty.c
index da7bd1921b7..15c6095c25e 100644
--- a/usr.bin/tmux/tty.c
+++ b/usr.bin/tmux/tty.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tty.c,v 1.417 2022/03/08 12:01:19 nicm Exp $ */
+/* $OpenBSD: tty.c,v 1.418 2022/03/24 09:05:57 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -655,6 +655,18 @@ tty_set_title(struct tty *tty, const char *title)
 	tty_putcode(tty, TTYC_FSL);
 }
 
+void
+tty_set_path(struct tty *tty, const char *title)
+{
+	if (!tty_term_has(tty->term, TTYC_SWD) ||
+	    !tty_term_has(tty->term, TTYC_FSL))
+		return;
+
+	tty_putcode(tty, TTYC_SWD);
+	tty_puts(tty, title);
+	tty_putcode(tty, TTYC_FSL);
+}
+
 static void
 tty_force_cursor_colour(struct tty *tty, int c)
 {