===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/tmux.1,v
retrieving revision 1.520
retrieving revision 1.521
diff -c -r1.520 -r1.521
*** src/usr.bin/tmux/tmux.1	2017/01/09 21:03:25	1.520
--- src/usr.bin/tmux/tmux.1	2017/01/09 21:28:56	1.521
***************
*** 1,4 ****
! .\" $OpenBSD: tmux.1,v 1.520 2017/01/09 21:03:25 nicm Exp $
  .\"
  .\" Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
  .\"
--- 1,4 ----
! .\" $OpenBSD: tmux.1,v 1.521 2017/01/09 21:28:56 nicm Exp $
  .\"
  .\" Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
  .\"
***************
*** 930,935 ****
--- 930,959 ----
  is given, no error will be returned if
  .Ar path
  does not exist.
+ .Pp
+ Within a configuration file, commands may be made conditional by surrounding
+ them with
+ .Em %if
+ and
+ .Em %endif
+ lines.
+ The argument to
+ .Em %if
+ is expanded as a format and if it evaluates to false
+ .Ns ( Ql 0
+ or empty), subsequent lines are ignored until
+ .Em %endif .
+ For example:
+ .Bd -literal -offset indent
+ %if #{==:#{host},myhost}
+ set -g status-style bg=red
+ %endif
+ .Ed
+ .Pp
+ Will change the status line to red if running on
+ .Ql myhost .
+ .Em %if
+ may not be nested.
  .It Ic start-server
  .D1 (alias: Ic start )
  Start the