Mention that -cd and -cu are possible, and that it's an extension to POSIX.

discussed with jmc and otto

ok jmc

2 files changed, 15 insertions, 6 deletions

diff --git a/usr.bin/uniq/uniq.1 b/usr.bin/uniq/uniq.1
index 55c2c71a727..881b34464ea 100644
--- a/usr.bin/uniq/uniq.1
+++ b/usr.bin/uniq/uniq.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: uniq.1,v 1.13 2007/11/09 20:04:03 kili Exp $
+.\"	$OpenBSD: uniq.1,v 1.14 2007/11/11 17:50:29 kili Exp $
 .\"	$NetBSD: uniq.1,v 1.5 1994/12/06 07:51:15 jtc Exp $
 .\"
 .\" Copyright (c) 1991, 1993
@@ -33,7 +33,7 @@
 .\"
 .\"     @(#)uniq.1	8.1 (Berkeley) 6/6/93
 .\"
-.Dd $Mdocdate: November 9 2007 $
+.Dd $Mdocdate: November 11 2007 $
 .Dt UNIQ 1
 .Os
 .Sh NAME
@@ -41,7 +41,8 @@
 .Nd report or filter out repeated lines in a file
 .Sh SYNOPSIS
 .Nm uniq
-.Op Fl c | d | u
+.Op Fl c
+.Op Fl d | u
 .Op Fl f Ar fields
 .Op Fl s Ar chars
 .Oo
@@ -126,6 +127,14 @@ utility is compliant with the
 .St -p1003.1-2004
 specification.
 .Pp
+The use of
+.Fl c
+in conjunction with
+.Fl d
+or
+.Fl u
+is an extension to that specification.
+.Pp
 The historic
 .Cm + Ns Ar number
 and
diff --git a/usr.bin/uniq/uniq.c b/usr.bin/uniq/uniq.c
index 073bb334aaf..50a0f600bc2 100644
--- a/usr.bin/uniq/uniq.c
+++ b/usr.bin/uniq/uniq.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uniq.c,v 1.16 2007/11/09 20:04:03 kili Exp $	*/
+/*	$OpenBSD: uniq.c,v 1.17 2007/11/11 17:50:29 kili Exp $	*/
 /*	$NetBSD: uniq.c,v 1.7 1995/08/31 22:03:48 jtc Exp $	*/
 
 /*
@@ -43,7 +43,7 @@ static char copyright[] =
 #if 0
 static char sccsid[] = "@(#)uniq.c	8.3 (Berkeley) 5/4/95";
 #endif
-static char rcsid[] = "$OpenBSD: uniq.c,v 1.16 2007/11/09 20:04:03 kili Exp $";
+static char rcsid[] = "$OpenBSD: uniq.c,v 1.17 2007/11/11 17:50:29 kili Exp $";
 #endif /* not lint */
 
 #include <ctype.h>
@@ -243,7 +243,7 @@ usage(void)
 	extern char *__progname;
 
 	(void)fprintf(stderr,
-	    "usage: %s [-c | -d | -u] [-f fields] [-s chars] [input_file [output_file]]\n",
+	    "usage: %s [-c] [-d | -u] [-f fields] [-s chars] [input_file [output_file]]\n",
 	    __progname);
 	exit(1);
 }