Fix up some bits about window-size that seem to have got lost.

tmux.1

@@ -206,7 +206,6 @@ and
 files in the current directory, where
 .Em PID
 is the PID of the server or client process.
-.Pp
 If
 .Fl v
 is specified twice, an additional
@@ -847,13 +846,22 @@ and
 are the name of and shell command to execute in the initial window.
 With
 .Fl d ,
-the initial size is 80 x 24;
+the initial size comes from the global
+.Ic default-size
+option;
 .Fl x
 and
 .Fl y
 can be used to specify a different size.
 .Ql -
 uses the size of the current client if any.
+If
+.Fl x
+or
+.Fl y
+is given, the
+.Ic default-size
+option is set for the session.
 .Pp
 If run from a terminal, any
 .Xr termios 4
@@ -931,6 +939,36 @@ If
 .Fl S
 is specified, only update the client's status line.
 .Pp
+The
+.Fl U ,
+.Fl D ,
+.Fl L
+.Fl R ,
+and
+.Fl c
+flags allow the visible portion of a window which is larger than the client
+to be changed.
+.Fl U
+moves the visible part up by
+.Ar adjustment
+rows and
+.Fl D
+down,
+.Fl L
+left by
+.Ar adjustment
+columns and
+.Fl R
+right.
+.Fl c
+returns to tracking the cursor automatically.
+If
+.Ar adjustment
+is omitted, 1 is used.
+Note that the visible position is a property of the client not of the
+window, changing the current window in the attached session will reset
+it.
+.Pp
 .Fl C
 sets the width and height of a control client.
 .Fl l
@@ -2783,9 +2821,15 @@ This option should be configured when
 .Nm
 is used as a login shell.
 .It Ic default-size Ar XxY
-Set the default size of windows when the size is not set or the
-.Ic window-size
-option is manual.
+Set the default size of new windows when the
+.Ar window-size
+option is set to manual or when a session is created with
+.Ic new-session
+.Fl d .
+The value is the width and height separated by an
+.Ql x
+character.
+The default is 80x24.
 .It Xo Ic destroy-unattached
 .Op Ic on | off
 .Xc
@@ -3120,10 +3164,13 @@ Supported window options are:
 Aggressively resize the chosen window.
 This means that
 .Nm
-will resize the window to the size of the smallest session for which it is the
-current window, rather than the smallest session to which it is attached.
-The window may resize when the current window is changed on another sessions;
-this option is good for full-screen programs which support
+will resize the window to the size of the smallest or largest session
+(see the
+.Ic window-size
+option) for which it is the current window, rather than the session to
+which it is attached.
+The window may resize when the current window is changed on another
+session; this option is good for full-screen programs which support
 .Dv SIGWINCH
 and poor for interactive programs such as shells.
 .Pp
@@ -3365,6 +3412,28 @@ see the
 .Sx STYLES
 section.
 .Pp
+.It Xo Ic window-size
+.Ar largest | Ar smallest | Ar manual
+.Xc
+Configure how
+.Nm
+determines the window size.
+If set to
+.Ar largest ,
+the size of the largest attached session is used; if
+.Ar smallest ,
+the size of the smallest.
+If
+.Ar manual ,
+the size of a new window is set from the
+.Ic default-size
+option and windows are resized automatically.
+See also the
+.Ic resize-window
+command and the
+.Ic aggressive-resize
+option.
+.Pp
 .It Ic window-style Ar style
 Set the default window style.
 For how to specify
@@ -3373,21 +3442,6 @@ see the
 .Sx STYLES
 section.
 .Pp
-.It Xo Ic window-size
-.Op Ic smallest | largest | manual
-.Xc
-Tell
-.Nm
-how to automatically size windows either the size of the smallest session
-containing the window, the size of the largest, or manual size.
-See also the
-.Ic resize-window
-command and the
-.Ic default-size
-and
-.Ic aggressive-resize
-options.
-.Pp
 .It Xo Ic wrap-search
 .Op Ic on | off
 .Xc
@@ -3936,12 +3990,10 @@ The following variables are available, where appropriate:
 .It Li "session_group_size" Ta "" Ta "Size of session group"
 .It Li "session_group_list" Ta "" Ta "List of sessions in group"
 .It Li "session_grouped" Ta "" Ta "1 if session in a group"
-.It Li "session_height" Ta "" Ta "Height of session"
 .It Li "session_id" Ta "" Ta "Unique session ID"
 .It Li "session_many_attached" Ta "" Ta "1 if multiple clients attached"
 .It Li "session_name" Ta "#S" Ta "Name of session"
 .It Li "session_stack" Ta "" Ta "Window indexes in most recent order"
-.It Li "session_width" Ta "" Ta "Width of session"
 .It Li "session_windows" Ta "" Ta "Number of windows in session"
 .It Li "socket_path" Ta "" Ta "Server socket path"
 .It Li "start_time" Ta "" Ta "Server start time"
@@ -3949,6 +4001,7 @@ The following variables are available, where appropriate:
 .It Li "window_activity_flag" Ta "" Ta "1 if window has activity"
 .It Li "window_active" Ta "" Ta "1 if window active"
 .It Li "window_bell_flag" Ta "" Ta "1 if window has bell"
+.It Li "window_bigger" Ta "" Ta "1 if window is larger than client"
 .It Li "window_end_flag" Ta "" Ta "1 if window has the highest index"
 .It Li "window_flags" Ta "#F" Ta "Window flags"
 .It Li "window_format" Ta "" Ta "1 if format is for a window (not assuming the current)"
@@ -3959,6 +4012,8 @@ The following variables are available, where appropriate:
 .It Li "window_layout" Ta "" Ta "Window layout description, ignoring zoomed window panes"
 .It Li "window_linked" Ta "" Ta "1 if window is linked across sessions"
 .It Li "window_name" Ta "#W" Ta "Name of window"
+.It Li "window_offset_x" Ta "" Ta "X offset into window if larger than client"
+.It Li "window_offset_y" Ta "" Ta "Y offset into window if larger than client"
 .It Li "window_panes" Ta "" Ta "Number of panes in window"
 .It Li "window_silence_flag" Ta "" Ta "1 if window has silence alert"
 .It Li "window_stack_index" Ta "" Ta "Index in session most recent stack"