+#define REGC(c,s) STMT_START { if (!SIZE_ONLY) *(s) = (c); else (void)(s);} STMT_END
+
+/* Macros for recording node offsets. 20001227 mjd@plover.com
+ * Nodes are numbered 1, 2, 3, 4. Node #n's position is recorded in
+ * element 2*n-1 of the array. Element #2n holds the byte length node #n.
+ * Element 0 holds the number n.
+ */
+
+#define MJD_OFFSET_DEBUG(x)
+/* #define MJD_OFFSET_DEBUG(x) fprintf x */
+
+
+# define Set_Node_Offset_To_R(node,byte) \
+ STMT_START { \
+ if (! SIZE_ONLY) { \
+ if((node) < 0) { \
+ Perl_croak(aTHX_ "value of node is %d in Offset macro", node); \
+ } else { \
+ RExC_offsets[2*(node)-1] = (byte); \
+ } \
+ } \
+ } STMT_END
+
+# define Set_Node_Offset(node,byte) Set_Node_Offset_To_R((node)-RExC_emit_start, (byte)-RExC_start)
+# define Set_Cur_Node_Offset Set_Node_Offset(RExC_emit, RExC_parse)
+
+# define Set_Node_Length_To_R(node,len) \
+ STMT_START { \
+ if (! SIZE_ONLY) { \
+ MJD_OFFSET_DEBUG((stderr, "** (%d) size of node %d is %d.\n", __LINE__, (node), (len))); \
+ if((node) < 0) { \
+ Perl_croak(aTHX_ "value of node is %d in Length macro", node); \
+ } else { \
+ RExC_offsets[2*(node)] = (len); \
+ } \
+ } \
+ } STMT_END
+
+# define Set_Node_Length(node,len) Set_Node_Length_To_R((node)-RExC_emit_start, len)
+# define Set_Cur_Node_Length(len) Set_Node_Length(RExC_emit, len)
+# define Set_Node_Cur_Length(node) Set_Node_Length(node, RExC_parse - parse_start)
+
+/* Get offsets and lengths */
+#define Node_Offset(n) (RExC_offsets[2*((n)-RExC_emit_start)-1])
+#define Node_Length(n) (RExC_offsets[2*((n)-RExC_emit_start)])