===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/tty-keys.c,v
retrieving revision 1.121
retrieving revision 1.122
diff -u -r1.121 -r1.122
--- src/usr.bin/tmux/tty-keys.c	2020/01/28 10:59:29	1.121
+++ src/usr.bin/tmux/tty-keys.c	2020/01/28 11:39:51	1.122
@@ -1,4 +1,4 @@
-/* $OpenBSD: tty-keys.c,v 1.121 2020/01/28 10:59:29 nicm Exp $ */
+/* $OpenBSD: tty-keys.c,v 1.122 2020/01/28 11:39:51 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -1117,7 +1117,9 @@
 
 	/* Set terminal flags. */
 	if (strncmp(tmp, "ITERM2 ", 7) == 0)
-		flags |= TERM_DECSLRM;
+		flags |= (TERM_DECSLRM|TERM_256COLOURS|TERM_RGBCOLOURS);
+	if (strncmp(tmp, "TMUX ", 5) == 0)
+		flags |= (TERM_256COLOURS|TERM_RGBCOLOURS);
 	log_debug("%s: received DSR %.*s", c->name, (int)*size, buf);
 
 	tty_set_flags(tty, flags);