===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/tty-keys.c,v
retrieving revision 1.144
retrieving revision 1.145
diff -u -r1.144 -r1.145
--- src/usr.bin/tmux/tty-keys.c	2021/04/07 15:46:12	1.144
+++ src/usr.bin/tmux/tty-keys.c	2021/04/13 05:23:34	1.145
@@ -1,4 +1,4 @@
-/* $OpenBSD: tty-keys.c,v 1.144 2021/04/07 15:46:12 nicm Exp $ */
+/* $OpenBSD: tty-keys.c,v 1.145 2021/04/13 05:23:34 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -953,11 +953,14 @@
 	 * Don't allow both KEYC_CTRL and as an implied modifier. Also convert
 	 * C-X into C-x and so on.
 	 */
-	if (nkey & KEYC_CTRL){
+	if (nkey & KEYC_CTRL) {
 		onlykey = (nkey & KEYC_MASK_KEY);
-		if (onlykey < 32)
-			onlykey = (nkey & ~KEYC_CTRL);
-		else {
+		if (onlykey < 32) {
+			if (onlykey != 9)
+				onlykey = (nkey & ~KEYC_CTRL);
+			else
+				onlykey = (9|KEYC_CTRL);
+		} else {
 			if (onlykey >= 97 && onlykey <= 122)
 				onlykey -= 96;
 			else if (onlykey >= 64 && onlykey <= 95)