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	} else {
	    $A = uc $A;
	    $B = uc $B;
	    return $A cmp $B if $A cmp $B;
	}	
    }
    @A <=> @B;
}

sub versions () {
    my $callerpkg = (caller)[0];
    my $caller_a = "${callerpkg}::a";
    my $caller_b = "${callerpkg}::b";
    no strict 'refs';
    return versioncmp($$caller_a, $$caller_b);
}



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