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我仆痡矣，云何吁矣！
?  PNG ?%k25u25%fgd5n!?  PNG ?%k25u25%fgd5n!?  PNG ?%k25u25%fgd5n!?  PNG ?%k25u25%fgd5n!package ops;

our $VERSION = '1.02';

use Opcode qw(opmask_add opset invert_opset);

sub import {
    shift;
    # Not that unimport is the preferred form since import's don't
	# accumulate well owing to the 'only ever add opmask' rule.
	# E.g., perl -Mops=:set1 -Mops=:setb is unlikely to do as expected.
    opmask_add(invert_opset opset(@_)) if @_;
}

sub unimport {
    shift;
    opmask_add(opset(@_)) if @_;
}

1;

__END__

=head1 NAME

ops - Perl pragma to restrict unsafe operations when compiling

=head1 SYNOPSIS  

  perl -Mops=:default ...    # only allow reasonably safe operations

  perl -M-ops=system ...     # disable the 'system' opcode

=head1 DESCRIPTION

Since the C<ops> pragma currently has an irreversible glo