From 0483646801297f7316f7dbcdb2e332a6b8de3ed8 Mon Sep 17 00:00:00 2001
From: nicm <nicm@openbsd.org>
Date: Tue, 20 Jan 2015 08:18:04 +0000
Subject: [PATCH] Support blinking cursor mode, both the xterm CSI ?12 h/l and
 (the backwards) screen CSI 34 h/l. From Guanpeng Xu.

---
 usr.bin/tmux/input.c    | 14 +++++++++++++-
 usr.bin/tmux/tmux.h     |  5 +++--
 usr.bin/tmux/tty-term.c |  3 ++-
 usr.bin/tmux/tty.c      | 14 +++++++++-----
 4 files changed, 27 insertions(+), 9 deletions(-)

diff --git a/usr.bin/tmux/input.c b/usr.bin/tmux/input.c
index f22ea03e4a6..32f66a35c71 100644
--- a/usr.bin/tmux/input.c
+++ b/usr.bin/tmux/input.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: input.c,v 1.71 2014/10/08 17:35:58 nicm Exp $ */
+/* $OpenBSD: input.c,v 1.72 2015/01/20 08:18:04 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -1342,6 +1342,9 @@ input_csi_dispatch_rm(struct input_ctx *ictx)
 		case 4:		/* IRM */
 			screen_write_mode_clear(&ictx->ctx, MODE_INSERT);
 			break;
+		case 34:
+			screen_write_mode_set(&ictx->ctx, MODE_BLINKING);
+			break;
 		default:
 			log_debug("%s: unknown '%c'", __func__, ictx->ch);
 			break;
@@ -1368,6 +1371,9 @@ input_csi_dispatch_rm_private(struct input_ctx *ictx)
 		case 7:		/* DECAWM */
 			screen_write_mode_clear(&ictx->ctx, MODE_WRAP);
 			break;
+		case 12:
+			screen_write_mode_clear(&ictx->ctx, MODE_BLINKING);
+			break;
 		case 25:	/* TCEM */
 			screen_write_mode_clear(&ictx->ctx, MODE_CURSOR);
 			break;
@@ -1413,6 +1419,9 @@ input_csi_dispatch_sm(struct input_ctx *ictx)
 		case 4:		/* IRM */
 			screen_write_mode_set(&ictx->ctx, MODE_INSERT);
 			break;
+		case 34:
+			screen_write_mode_clear(&ictx->ctx, MODE_BLINKING);
+			break;
 		default:
 			log_debug("%s: unknown '%c'", __func__, ictx->ch);
 			break;
@@ -1439,6 +1448,9 @@ input_csi_dispatch_sm_private(struct input_ctx *ictx)
 		case 7:		/* DECAWM */
 			screen_write_mode_set(&ictx->ctx, MODE_WRAP);
 			break;
+		case 12:
+			screen_write_mode_set(&ictx->ctx, MODE_BLINKING);
+			break;
 		case 25:	/* TCEM */
 			screen_write_mode_set(&ictx->ctx, MODE_CURSOR);
 			break;
diff --git a/usr.bin/tmux/tmux.h b/usr.bin/tmux/tmux.h
index 87d5831335b..b7d9193bdad 100644
--- a/usr.bin/tmux/tmux.h
+++ b/usr.bin/tmux/tmux.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: tmux.h,v 1.484 2014/12/09 19:23:35 nicm Exp $ */
+/* $OpenBSD: tmux.h,v 1.485 2015/01/20 08:18:04 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -175,6 +175,7 @@ enum tty_code_code {
 	TTYC_CUP,	/* cursor_address, cm */
 	TTYC_CUU,	/* parm_up_cursor, UP */
 	TTYC_CUU1,	/* cursor_up, up */
+	TTYC_CVVIS,	/* cursor_visible, vs */
 	TTYC_DCH,	/* parm_dch, DC */
 	TTYC_DCH1,	/* delete_character, dc */
 	TTYC_DIM,	/* enter_dim_mode, mh */
@@ -600,7 +601,7 @@ struct mode_key_table {
 #define MODE_WRAP 0x10		/* whether lines wrap */
 #define MODE_MOUSE_STANDARD 0x20
 #define MODE_MOUSE_BUTTON 0x40
-/* 0x80 unused */
+#define MODE_BLINKING 0x80
 #define MODE_MOUSE_UTF8 0x100
 #define MODE_MOUSE_SGR 0x200
 #define MODE_BRACKETPASTE 0x400
diff --git a/usr.bin/tmux/tty-term.c b/usr.bin/tmux/tty-term.c
index bd0d68bf6fa..3c5e2a7889d 100644
--- a/usr.bin/tmux/tty-term.c
+++ b/usr.bin/tmux/tty-term.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tty-term.c,v 1.35 2014/07/21 10:25:48 nicm Exp $ */
+/* $OpenBSD: tty-term.c,v 1.36 2015/01/20 08:18:04 nicm Exp $ */
 
 /*
  * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -54,6 +54,7 @@ const struct tty_term_code_entry tty_term_codes[NTTYCODE] = {
 	{ TTYC_CUP, TTYCODE_STRING, "cup" },
 	{ TTYC_CUU, TTYCODE_STRING, "cuu" },
 	{ TTYC_CUU1, TTYCODE_STRING, "cuu1" },
+	{ TTYC_CVVIS, TTYCODE_STRING, "cvvis" },
 	{ TTYC_DCH, TTYCODE_STRING, "dch" },
 	{ TTYC_DCH1, TTYCODE_STRING, "dch1" },
 	{ TTYC_DIM, TTYCODE_STRING, "dim" },
diff --git a/usr.bin/tmux/tty.c b/usr.bin/tmux/tty.c
index 55e8c663618..5c418a9bc74 100644
--- a/usr.bin/tmux/tty.c
+++ b/usr.bin/tmux/tty.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tty.c,v 1.170 2014/08/09 07:33:37 nicm Exp $ */
+/* $OpenBSD: tty.c,v 1.171 2015/01/20 08:18:04 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -482,10 +482,14 @@ tty_update_mode(struct tty *tty, int mode, struct screen *s)
 		mode &= ~MODE_CURSOR;
 
 	changed = mode ^ tty->mode;
-	if (changed & MODE_CURSOR) {
-		if (mode & MODE_CURSOR)
-			tty_putcode(tty, TTYC_CNORM);
-		else
+	if (changed & (MODE_CURSOR|MODE_BLINKING)) {
+		if (mode & MODE_CURSOR) {
+			if (mode & MODE_BLINKING &&
+			    tty_term_has(tty->term, TTYC_CVVIS))
+				tty_putcode(tty, TTYC_CVVIS);
+			else
+				tty_putcode(tty, TTYC_CNORM);
+		} else
 			tty_putcode(tty, TTYC_CIVIS);
 	}
 	if (tty->cstyle != s->cstyle) {
-- 
2.20.1