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+.\" $NetBSD: pmatch.9,v 1.3 2009/10/19 18:41:09 bouyer Exp $
+.\"
+.\" Copyright (c) 2003 Manuel Bouyer.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\"
+.Dd October 12, 2003
+.Dt PMATCH 9
+.Os
+.Sh NAME
+.Nm pmatch
+.Nd performs pattern matching on strings
+.Sh SYNOPSIS
+.In sys/systm.h
+.Ft int
+.Fn pmatch "const char *string" "const char *pattern" "const char **estr"
+.Sh DESCRIPTION
+Extract substring matching
+.Fa pattern
+from
+.Fa string .
+If not
+.Dv NULL ,
+.Fa estr
+points to the end of the longest exact or substring match.
+.Pp
+.Fn pmatch
+uses the following metacharacters:
+.Bl -tag -width Ds
+.It Li \&?
+match any single character.
+.It Li *
+match any character 0 or more times.
+.It Li \&[
+define a range of characters that will match.
+The range is defined by 2 characters separated by a
+.Sq Li \&- .
+The range definition has to end with a
+.Sq Li \&] .
+A
+.Sq Li ^
+following the
+.Sq Li \&[
+will negate the range.
+.El
+.Sh RETURN VALUES
+.Fn pmatch
+will return 2 for an exact match, 1 for a substring match, 0 for no match and
+\-1 if an error occurs.