feature test {
lookup single_sub_f1 {
sub a by A;
} single_sub_f1;
lookup single_sub_f2 {
sub a by b;
# just to force format 2
sub X by Y;
} single_sub_f2;
lookup multiple_sub {
sub a by c d;
} multiple_sub;
lookup lig_sub {
sub a a by a_a;
} lig_sub;
lookup alt_sub {
sub a from [a.1 a.2];
} alt_sub;
lookup rev_single_sub {
rsub a a' by a.3;
} rev_single_sub;
} test;