Sync OpenBSD patchset 844:

Support -x and -y for new-session to specify the initial size of the
window if created detached with -d.

tmux.1

@@ -1,4 +1,4 @@
-.\" $Id: tmux.1,v 1.294 2011-01-21 23:53:45 tcunha Exp $
+.\" $Id: tmux.1,v 1.295 2011-01-21 23:55:26 tcunha Exp $
 .\"
 .\" Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
 .\"
@@ -595,6 +595,8 @@ Lock all clients attached to
 .Op Fl n Ar window-name
 .Op Fl s Ar session-name
 .Op Fl t Ar target-session
+.Op Fl x Ar width
+.Op Fl y Ar height
 .Op Ar shell-command
 .Xc
 .D1 (alias: Ic new )
@@ -608,6 +610,13 @@ is given.
 and
 .Ar shell-command
 are the name of and shell command to execute in the initial window.
+If
+.Fl d
+is used,
+.Fl x
+and
+.Fl y
+specify the size of the initial window (80 by 24 if not given).
 .Pp
 If run from a terminal, any
 .Xr termios 4