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-rw-r--r--lib/libc/stdlib/getopt.315
1 files changed, 13 insertions, 2 deletions
diff --git a/lib/libc/stdlib/getopt.3 b/lib/libc/stdlib/getopt.3
index 03a63ab..76ed7d5 100644
--- a/lib/libc/stdlib/getopt.3
+++ b/lib/libc/stdlib/getopt.3
@@ -1,4 +1,4 @@
-.\" $NetBSD: getopt.3,v 1.31 2003/09/23 10:26:54 wiz Exp $
+.\" $NetBSD: getopt.3,v 1.34 2014/06/05 22:09:50 wiz Exp $
.\"
.\" Copyright (c) 1988, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
@@ -30,7 +30,7 @@
.\" @(#)getopt.3 8.5 (Berkeley) 4/27/95
.\" $FreeBSD$
.\"
-.Dd April 27, 1995
+.Dd June 5, 2014
.Dt GETOPT 3
.Os
.Sh NAME
@@ -65,6 +65,17 @@ The option string
may contain the following elements: individual characters, and
characters followed by a colon to indicate an option argument
is to follow.
+If an individual character is followed by two colons, then the
+option argument is optional;
+.Va optarg
+is set to the rest of the current
+.Va argv
+word, or
+.Dv NULL
+if there were no more characters in the current word.
+This is a
+.Nx
+extension.
For example, an option string
.Li \&"x"
recognizes an option
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