===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/tty.c,v
retrieving revision 1.415
retrieving revision 1.416
diff -c -r1.415 -r1.416
*** src/usr.bin/tmux/tty.c	2021/12/31 11:35:49	1.415
--- src/usr.bin/tmux/tty.c	2022/02/15 13:03:02	1.416
***************
*** 1,4 ****
! /* $OpenBSD: tty.c,v 1.415 2021/12/31 11:35:49 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
--- 1,4 ----
! /* $OpenBSD: tty.c,v 1.416 2022/02/15 13:03:02 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
***************
*** 83,88 ****
--- 83,90 ----
  #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
  #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
  
+ #define TTY_QUERY_TIMEOUT 5
+ 
  void
  tty_create_log(void)
  {
***************
*** 307,313 ****
  {
  	struct client	*c = tty->client;
  	struct termios	 tio;
! 	struct timeval	 tv = { .tv_sec = 3 };
  
  	setblocking(c->fd, 0);
  	event_add(&tty->event_in, NULL);
--- 309,315 ----
  {
  	struct client	*c = tty->client;
  	struct termios	 tio;
! 	struct timeval	 tv = { .tv_sec = TTY_QUERY_TIMEOUT };
  
  	setblocking(c->fd, 0);
  	event_add(&tty->event_in, NULL);
***************
*** 2917,2919 ****
--- 2919,2944 ----
  	gc.bg = bg;
  	tty_attributes(tty, &gc, defaults, palette);
  }
+ 
+ static void
+ tty_query_timer_callback(__unused int fd, __unused short events, void *data)
+ {
+ 	struct tty	*tty = data;
+ 
+ 	tty->flags &= ~TTY_OSC52QUERY;
+ }
+ 
+ void
+ tty_send_osc52_query(struct tty *tty)
+ {
+ 	struct timeval	 tv = { .tv_sec = TTY_QUERY_TIMEOUT };
+ 
+ 	if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY))
+ 		return;
+ 	tty_putcode_ptr2(tty, TTYC_MS, "", "?");
+ 	tty->flags |= TTY_OSC52QUERY;
+ 
+ 	evtimer_set(&tty->query_timer, tty_query_timer_callback, tty);
+ 	evtimer_add(&tty->query_timer, &tv);
+ }
+