=for apidoc Amn|U32|GIMME_V
The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>,
C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context,
-respectively.
+respectively. See L<perlcall> for a usage example.
=for apidoc Amn|U32|GIMME
A backward-compatible version of C<GIMME_V> which can only return
#define OPpDEREF_AV 32 /* Want ref to AV. */
#define OPpDEREF_HV 64 /* Want ref to HV. */
#define OPpDEREF_SV (32|64) /* Want ref to SV. */
+/* Private for OP_RV2SV, OP_RV2AV, OP_RV2AV */
+#define OPpDEREFed 4 /* prev op was OPpDEREF */
/* OP_ENTERSUB only */
#define OPpENTERSUB_DB 16 /* Debug subroutine. */
#define OPpENTERSUB_HASTARG 32 /* Called from OP tree. */