+#define anchored_substr substrs->data[0].substr
+#define anchored_offset substrs->data[0].min_offset
+#define float_substr substrs->data[1].substr
+#define float_min_offset substrs->data[1].min_offset
+#define float_max_offset substrs->data[1].max_offset
+#define check_substr substrs->data[2].substr
+#define check_offset_min substrs->data[2].min_offset
+#define check_offset_max substrs->data[2].max_offset
+
+#define ROPT_ANCH (ROPT_ANCH_BOL|ROPT_ANCH_MBOL|ROPT_ANCH_GPOS)
+#define ROPT_ANCH_SINGLE (ROPT_ANCH_BOL|ROPT_ANCH_GPOS)
+#define ROPT_ANCH_BOL 0x00001
+#define ROPT_ANCH_MBOL 0x00002
+#define ROPT_ANCH_GPOS 0x00004
+#define ROPT_SKIP 0x00008
+#define ROPT_IMPLICIT 0x00010 /* Converted .* to ^.* */
+#define ROPT_NOSCAN 0x00020 /* Check-string always at start. */
+#define ROPT_GPOS_SEEN 0x00040
+#define ROPT_CHECK_ALL 0x00080
+#define ROPT_LOOKBEHIND_SEEN 0x00100
+#define ROPT_EVAL_SEEN 0x00200
+#define ROPT_TAINTED_SEEN 0x00400
+#define ROPT_ANCH_SBOL 0x00800
+
+/* 0xf800 of reganch is used by PMf_COMPILETIME */
+
+#define ROPT_UTF8 0x10000
+#define ROPT_NAUGHTY 0x20000 /* how exponential is this pattern? */
+
+#define RX_MATCH_TAINTED(prog) ((prog)->reganch & ROPT_TAINTED_SEEN)
+#define RX_MATCH_TAINTED_on(prog) ((prog)->reganch |= ROPT_TAINTED_SEEN)
+#define RX_MATCH_TAINTED_off(prog) ((prog)->reganch &= ~ROPT_TAINTED_SEEN)
+#define RX_MATCH_TAINTED_set(prog, t) ((t) \
+ ? RX_MATCH_TAINTED_on(prog) \
+ : RX_MATCH_TAINTED_off(prog))
+
+#define REXEC_COPY_STR 1 /* Need to copy the string. */
+#define REXEC_CHECKED 2 /* check_substr already checked. */
+#define REXEC_SCREAM 4 /* use scream table. */
+
+#define ReREFCNT_inc(re) ((re && re->refcnt++), re)
+#define ReREFCNT_dec(re) pregfree(re)