expected and
expected and exists
expected and empty
expected U23 condition
expected VAR23
expected M pattern
expected or
expected or exists
expected or empty
defined(V42) && 42 > 0: Ok
defined(V66) && ( "" < 42 ): Ok
1 || 42 < 42: Ok
1 ||  < 42: Ok
0 || 42 <= 42: Ok
0 ||  < 42: Ok
exit status 0