#define OPpSORT_QSORT 32 /* Use quicksort (not mergesort) */
#define OPpSORT_STABLE 64 /* Use a stable algorithm */
+/* Private for OP_REVERSE */
+#define OPpREVERSE_INPLACE 8 /* reverse in-place (@a = reverse @a) */
+
/* Private for OP_OPEN and OP_BACKTICK */
#define OPpOPEN_IN_RAW 16 /* binmode(F,":raw") on input fh */
#define OPpOPEN_IN_CRLF 32 /* binmode(F,":crlf") on input fh */