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Document that getopt_long(3) can and will accept unique abbreviated long

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option names.  This feature has been present since getopt_long(3) was first
released in NetBSD 1.5.  This is also standard GNU getopt_long(3) behavior.
This commit is contained in:
ginsbach 2007-07-02 17:56:17 +00:00
parent dbeb9a3eeb
commit a3ae2738c9
1 changed files with 7 additions and 2 deletions
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9
lib/libc/stdlib/getopt_long.3
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@ -1,4 +1,4 @@
.\" $NetBSD: getopt_long.3,v 1.17 2006/06/28 06:25:15 mjl Exp $ .\" $NetBSD: getopt_long.3,v 1.18 2007/07/02 17:56:17 ginsbach Exp $
.\" .\"
.\" Copyright (c) 1988, 1991, 1993 .\" Copyright (c) 1988, 1991, 1993
.\" The Regents of the University of California. All rights reserved. .\" The Regents of the University of California. All rights reserved.
@ -29,7 +29,7 @@
.\" .\"
.\" @(#)getopt.3 8.5 (Berkeley) 4/27/95 .\" @(#)getopt.3 8.5 (Berkeley) 4/27/95
.\" .\"
.Dd December 2, 2005 .Dd July 2, 2007
.Dt GETOPT_LONG 3 .Dt GETOPT_LONG 3
.Os .Os
.Sh NAME .Sh NAME
@ -86,6 +86,11 @@ It is possible to combine these methods, providing for long options
processing with short option equivalents for some options. processing with short option equivalents for some options.
Less frequently used options would be processed as long options only. Less frequently used options would be processed as long options only.
.Pp .Pp
Abbreviated long option names are accepted when
.Fn getopt_long
processes long options if the abbreviation is unique.
An exact match is always preferred for a defined long option.
.Pp
The The
.Fn getopt_long .Fn getopt_long
call requires a structure to be initialized describing the long options. call requires a structure to be initialized describing the long options.