{ $$ = newOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0); }
| REQUIRE term /* require Foo *//* FIMXE for MAD needed? */
{ $$ = newUNOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0, $2); }
+ | UNIOPSUB
+ { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); }
| UNIOPSUB term /* Sub treated as unop */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
append_elem(OP_LIST, $2, scalar($1))); }