From 3893e820b2fbd04b22b9a380cb05abd820221c98 Mon Sep 17 00:00:00 2001
From: nicm <nicm@openbsd.org>
Date: Thu, 10 Jun 2021 07:59:08 +0000
Subject: [PATCH] Feature for the mouse since FreeBSD termcap does not have
 kmous.

---
 usr.bin/tmux/tmux.1         |  6 +++++-
 usr.bin/tmux/tty-features.c | 19 +++++++++++++++----
 2 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/usr.bin/tmux/tmux.1 b/usr.bin/tmux/tmux.1
index 2d55b9f61ea..8273596854f 100644
--- a/usr.bin/tmux/tmux.1
+++ b/usr.bin/tmux/tmux.1
@@ -1,4 +1,4 @@
-.\" $OpenBSD: tmux.1,v 1.841 2021/06/10 07:56:47 nicm Exp $
+.\" $OpenBSD: tmux.1,v 1.842 2021/06/10 07:59:08 nicm Exp $
 .\"
 .\" Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 .\"
@@ -3540,6 +3540,10 @@ Supports extended keys.
 Supports focus reporting.
 .It margins
 Supports DECSLRM margins.
+.It mouse
+Supports
+.Xr xterm 1
+mouse sequences.
 .It overline
 Supports the overline SGR attribute.
 .It rectfill
diff --git a/usr.bin/tmux/tty-features.c b/usr.bin/tmux/tty-features.c
index 3a055702b3d..537920347ba 100644
--- a/usr.bin/tmux/tty-features.c
+++ b/usr.bin/tmux/tty-features.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tty-features.c,v 1.19 2021/06/10 07:28:45 nicm Exp $ */
+/* $OpenBSD: tty-features.c,v 1.20 2021/06/10 07:59:08 nicm Exp $ */
 
 /*
  * Copyright (c) 2020 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -25,7 +25,6 @@
 
 /*
  * Still hardcoded:
- * - mouse (under kmous capability);
  * - default colours (under AX or op capabilities);
  * - AIX colours (under colors >= 16);
  * - alternate escape (if terminal is VT100-like).
@@ -54,6 +53,17 @@ static const struct tty_feature tty_feature_title = {
 	0
 };
 
+/* Terminal has mouse support. */
+static const char *tty_feature_mouse_capabilities[] = {
+	"kmous=\\E[M",
+	NULL
+};
+static const struct tty_feature tty_feature_mouse = {
+	"mouse",
+	tty_feature_mouse_capabilities,
+	0
+};
+
 /* Terminal can set the clipboard with OSC 52. */
 static const char *tty_feature_clipboard_capabilities[] = {
 	"Ms=\\E]52;%p1%s;%p2%s\\a",
@@ -238,6 +248,7 @@ static const struct tty_feature *tty_features[] = {
 	&tty_feature_extkeys,
 	&tty_feature_focus,
 	&tty_feature_margins,
+	&tty_feature_mouse,
 	&tty_feature_overline,
 	&tty_feature_rectfill,
 	&tty_feature_rgb,
@@ -338,7 +349,7 @@ tty_default_features(int *feat, const char *name, u_int version)
 		const char	*features;
 	} table[] = {
 #define TTY_FEATURES_BASE_MODERN_XTERM \
-	"256,RGB,bpaste,clipboard,strikethrough,title"
+	"256,RGB,bpaste,clipboard,mouse,strikethrough,title"
 		{ .name = "mintty",
 		  .features = TTY_FEATURES_BASE_MODERN_XTERM
 			      ",ccolour,cstyle,extkeys,margins,overline,usstyle"
@@ -348,7 +359,7 @@ tty_default_features(int *feat, const char *name, u_int version)
 			      ",ccolour,cstyle,focus,overline,usstyle"
 		},
 		{ .name = "rxvt-unicode",
-		  .features = "256,bpaste,ccolour,cstyle,title"
+		  .features = "256,bpaste,ccolour,cstyle,mouse,title"
 		},
 		{ .name = "iTerm2",
 		  .features = TTY_FEATURES_BASE_MODERN_XTERM
-- 
2.20.1