From d606854082f0c2123db480f17bd63050e31d89ac Mon Sep 17 00:00:00 2001
From: jmc <jmc@openbsd.org>
Date: Thu, 6 Apr 2017 17:33:39 +0000
Subject: [PATCH] document -=; while here, simplify things so that we don;t add
 a separate usage every time we think of a new way to use this;

-= bits from anton lindqvist
ok tb tom
---
 sbin/wsconsctl/wsconsctl.8 | 12 +++++-------
 sbin/wsconsctl/wsconsctl.c |  7 +++----
 2 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/sbin/wsconsctl/wsconsctl.8 b/sbin/wsconsctl/wsconsctl.8
index 631497d4732..bb706026154 100644
--- a/sbin/wsconsctl/wsconsctl.8
+++ b/sbin/wsconsctl/wsconsctl.8
@@ -1,4 +1,4 @@
-.\" $OpenBSD: wsconsctl.8,v 1.23 2008/08/04 07:32:51 sobrado Exp $
+.\" $OpenBSD: wsconsctl.8,v 1.24 2017/04/06 17:33:39 jmc Exp $
 .\" $NetBSD: wsconsctl.8,v 1.5 1999/09/12 18:47:11 kleink Exp $
 .\"
 .\" Copyright (c) 1998 The NetBSD Foundation, Inc.
@@ -28,7 +28,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"/
-.Dd $Mdocdate: August 4 2008 $
+.Dd $Mdocdate: April 6 2017 $
 .Dt WSCONSCTL 8
 .Os
 .Sh NAME
@@ -45,10 +45,6 @@
 .Op Fl n
 .Op Fl f Ar file
 .Ar name Ns = Ns Ar value ...
-.Nm wsconsctl
-.Op Fl n
-.Op Fl f Ar file
-.Ar name Ns += Ns Ar value ...
 .Sh DESCRIPTION
 The
 .Nm
@@ -77,7 +73,9 @@ The value can be specified as either an absolute, by using the
 symbol,
 or as a relative value, by using the
 .Ql +=
-symbol.
+or
+.Ql -=
+symbols.
 See the
 .Sx EXAMPLES
 section for more details.
diff --git a/sbin/wsconsctl/wsconsctl.c b/sbin/wsconsctl/wsconsctl.c
index 38b13bdf78e..d821f19df44 100644
--- a/sbin/wsconsctl/wsconsctl.c
+++ b/sbin/wsconsctl/wsconsctl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: wsconsctl.c,v 1.29 2015/05/08 19:12:51 miod Exp $	*/
+/*	$OpenBSD: wsconsctl.c,v 1.30 2017/04/06 17:33:39 jmc Exp $	*/
 /*	$NetBSD: wsconsctl.c,v 1.2 1998/12/29 22:40:20 hannken Exp $ */
 
 /*-
@@ -71,9 +71,8 @@ usage(void)
 	fprintf(stderr,
 	    "usage: %s [-an]\n"
 	    "       %s [-n] [-f file] name ...\n"
-	    "       %s [-n] [-f file] name=value ...\n"
-	    "       %s [-n] [-f file] name+=value ...\n",
-	    __progname, __progname, __progname, __progname);
+	    "       %s [-n] [-f file] name=value ...\n",
+	    __progname, __progname, __progname);
 	exit(1);
 }
 
-- 
2.20.1