===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/tmux.1,v
retrieving revision 1.816
retrieving revision 1.817
diff -u -r1.816 -r1.817
--- src/usr.bin/tmux/tmux.1	2021/02/02 07:33:29	1.816
+++ src/usr.bin/tmux/tmux.1	2021/02/05 12:23:49	1.817
@@ -1,4 +1,4 @@
-.\" $OpenBSD: tmux.1,v 1.816 2021/02/02 07:33:29 jmc Exp $
+.\" $OpenBSD: tmux.1,v 1.817 2021/02/05 12:23:49 nicm Exp $
 .\"
 .\" Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 .\"
@@ -14,7 +14,7 @@
 .\" IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 .\" OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: February 2 2021 $
+.Dd $Mdocdate: February 5 2021 $
 .Dt TMUX 1
 .Os
 .Sh NAME
@@ -2348,7 +2348,7 @@
 .Ic base-index
 option.
 .It Xo Ic new-window
-.Op Fl abdkP
+.Op Fl abdkPS
 .Op Fl c Ar start-directory
 .Op Fl e Ar environment
 .Op Fl F Ar format
@@ -2377,6 +2377,14 @@
 shown, unless the
 .Fl k
 flag is used, in which case it is destroyed.
+If
+.Fl S
+is given and a window named
+.Ar window-name
+already exists, it is selected (unless
+.Fl d
+is also given in which case the command does nothing).
+.Pp
 .Ar shell-command
 is the command to execute.
 If
@@ -4687,6 +4695,17 @@
 .Bd -literal -offset indent
 #{W:#{E:window-status-format} ,#{E:window-status-current-format} }
 .Ed
+.Pp
+.Ql N:\&
+checks if a window (without any suffix or with the
+.Ql w
+suffix) or a session (with the
+.Ql s
+suffix) name exists, for example
+.Ql `N/w:foo`
+is replaced with 1 if a window named
+.Ql foo
+exists.
 .Pp
 A prefix of the form
 .Ql s/foo/bar/:\&