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diff --git a/perl/Wallet/ACL/Krb5/Regex.pm b/perl/Wallet/ACL/Krb5/Regex.pm
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-# Wallet::ACL::Krb5::Regex -- Wallet Kerberos v5 principal regex ACL verifier
-#
-# Written by Russ Allbery <eagle@eyrie.org>
-# Copyright 2007, 2010
-#     The Board of Trustees of the Leland Stanford Junior University
-#
-# See LICENSE for licensing terms.
-
-##############################################################################
-# Modules and declarations
-##############################################################################
-
-package Wallet::ACL::Krb5::Regex;
-require 5.006;
-
-use strict;
-use vars qw(@ISA $VERSION);
-
-use Wallet::ACL::Krb5;
-
-@ISA = qw(Wallet::ACL::Krb5);
-
-# This version should be increased on any code change to this module.  Always
-# use two digits for the minor version with a leading zero if necessary so
-# that it will sort properly.
-$VERSION = '0.01';
-
-##############################################################################
-# Interface
-##############################################################################
-
-# Returns true if the Perl regular expression specified by the ACL matches
-# the provided Kerberos principal.
-sub check {
-    my ($self, $principal, $acl) = @_;
-    unless ($principal) {
-        $self->error ('no principal specified');
-        return;
-    }
-    unless ($acl) {
-        $self->error ('no ACL specified');
-        return;
-    }
-    my $regex = eval { qr/$acl/ };
-    if ($@) {
-        $self->error ('malformed krb5-regex ACL');
-        return;
-    }
-    return ($principal =~ m/$regex/) ? 1 : 0;
-}
-
-1;
-__END__
-
-##############################################################################
-# Documentation
-##############################################################################
-
-=for stopwords
-ACL krb5-regex Durkacz Allbery verifier
-
-=head1 NAME
-
-Wallet::ACL::Krb5::Regex - Regex wallet ACL verifier for Kerberos principals
-
-=head1 SYNOPSIS
-
-    my $verifier = Wallet::ACL::Krb5::Regex->new;
-    my $status = $verifier->check ($principal, $acl);
-    if (not defined $status) {
-        die "Something failed: ", $verifier->error, "\n";
-    } elsif ($status) {
-        print "Access granted\n";
-    } else {
-        print "Access denied\n";
-    }
-
-=head1 DESCRIPTION
-
-Wallet::ACL::Krb5::Regex is the wallet ACL verifier used to verify ACL
-lines of type C<krb5-regex>.  The value of such an ACL is a Perl regular
-expression, and the ACL grants access to a given Kerberos principal if and
-only if the regular expression matches that principal.
-
-=head1 METHODS
-
-=over 4
-
-=item new()
-
-Creates a new ACL verifier.  For this verifier, there is no setup work.
-
-=item check(PRINCIPAL, ACL)
-
-Returns true if the Perl regular expression specified by the ACL matches the
-PRINCIPAL, false if not, and undef on an error (see L<"DIAGNOSTICS"> below).
-
-=item error()
-
-Returns the error if check() returned undef.
-
-=back
-
-=head1 DIAGNOSTICS
-
-=over 4
-
-=item malformed krb5-regex ACL
-
-The ACL parameter to check() was a malformed Perl regular expression.
-
-=item no principal specified
-
-The PRINCIPAL parameter to check() was undefined or the empty string.
-
-=item no ACL specified
-
-The ACL parameter to check() was undefined or the empty string.
-
-=back
-
-=head1 SEE ALSO
-
-Wallet::ACL(3), Wallet::ACL::Base(3), Wallet::ACL::Krb5(3), wallet-backend(8)
-
-This module is part of the wallet system.  The current version is
-available from L<http://www.eyrie.org/~eagle/software/wallet/>.
-
-=head1 AUTHOR
-
-Ian Durkacz
-
-=cut