From 782feb691bc15d1abd5f5c66fe3c0d336903a461 Mon Sep 17 00:00:00 2001
From: nicm <nicm@openbsd.org>
Date: Thu, 10 Oct 2024 10:41:33 +0000
Subject: [PATCH] Add a sixel_support format variable which is 1 if SIXEL is
 supported (always 0 on OpenBSD), requested by Misaki Masa in GitHub issue
 4177

---
 usr.bin/tmux/format.c | 12 +++++++++++-
 usr.bin/tmux/tmux.1   |  5 +++--
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/usr.bin/tmux/format.c b/usr.bin/tmux/format.c
index 10283c597cd..a396491840b 100644
--- a/usr.bin/tmux/format.c
+++ b/usr.bin/tmux/format.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: format.c,v 1.320 2024/08/26 07:14:40 nicm Exp $ */
+/* $OpenBSD: format.c,v 1.321 2024/10/10 10:41:33 nicm Exp $ */
 
 /*
  * Copyright (c) 2011 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -2320,6 +2320,13 @@ format_cb_version(__unused struct format_tree *ft)
 	return (xstrdup(getversion()));
 }
 
+/* Callback for sixel_support. */
+static void *
+format_cb_sixel_support(__unused struct format_tree *ft)
+{
+	return (xstrdup("0"));
+}
+
 /* Callback for active_window_index. */
 static void *
 format_cb_active_window_index(struct format_tree *ft)
@@ -3147,6 +3154,9 @@ static const struct format_table_entry format_table[] = {
 	{ "session_windows", FORMAT_TABLE_STRING,
 	  format_cb_session_windows
 	},
+	{ "sixel_support", FORMAT_TABLE_STRING,
+	  format_cb_sixel_support
+	},
 	{ "socket_path", FORMAT_TABLE_STRING,
 	  format_cb_socket_path
 	},
diff --git a/usr.bin/tmux/tmux.1 b/usr.bin/tmux/tmux.1
index bd93f84663e..99e4f031119 100644
--- a/usr.bin/tmux/tmux.1
+++ b/usr.bin/tmux/tmux.1
@@ -1,4 +1,4 @@
-.\" $OpenBSD: tmux.1,v 1.964 2024/10/07 12:58:36 nicm Exp $
+.\" $OpenBSD: tmux.1,v 1.965 2024/10/10 10:41:33 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: October 7 2024 $
+.Dd $Mdocdate: October 10 2024 $
 .Dt TMUX 1
 .Os
 .Sh NAME
@@ -5954,6 +5954,7 @@ The following variables are available, where appropriate:
 .It Li "session_stack" Ta "" Ta "Window indexes in most recent order"
 .It Li "session_windows" Ta "" Ta "Number of windows in session"
 .It Li "socket_path" Ta "" Ta "Server socket path"
+.It Li "sixel_support" Ta "" Ta "1 if server has support for SIXEL"
 .It Li "start_time" Ta "" Ta "Server start time"
 .It Li "uid" Ta "" Ta "Server UID"
 .It Li "user" Ta "" Ta "Server user"
-- 
2.20.1