===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/tmux.1,v
retrieving revision 1.285
retrieving revision 1.286
diff -c -r1.285 -r1.286
*** src/usr.bin/tmux/tmux.1	2012/03/20 17:09:48	1.285
--- src/usr.bin/tmux/tmux.1	2012/03/22 11:11:57	1.286
***************
*** 1,4 ****
! .\" $OpenBSD: tmux.1,v 1.285 2012/03/20 17:09:48 nicm Exp $
  .\"
  .\" Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
  .\"
--- 1,4 ----
! .\" $OpenBSD: tmux.1,v 1.286 2012/03/22 11:11:57 nicm Exp $
  .\"
  .\" Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
  .\"
***************
*** 14,20 ****
  .\" 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: March 20 2012 $
  .Dt TMUX 1
  .Os
  .Sh NAME
--- 14,20 ----
  .\" 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: March 22 2012 $
  .Dt TMUX 1
  .Os
  .Sh NAME
***************
*** 2908,2919 ****
--- 2908,2923 ----
  .It Xo Ic show-environment
  .Op Fl g
  .Op Fl t Ar target-session
+ .Op Ar variable
  .Xc
  .D1 (alias: Ic showenv )
  Display the environment for
  .Ar target-session
  or the global environment with
  .Fl g .
+ If
+ .Ar variable
+ is omitted, all variables are shown.
  Variables removed from the environment are prefixed with
  .Ql - .
  .El