-EXTERN_C void reh_call_comp_hook(pTHX_ regexp *, regnode *);
-EXTERN_C void reh_call_exec_hook(pTHX_ regexp *, regnode *, regmatch_info *, regmatch_state *);
+#include "xsh/caps.h" /* XSH_HAS_PERL() */
-#define REH_CALL_REGCOMP_HOOK(a, b) reh_call_comp_hook(aTHX_ (a), (b))
-#define REH_CALL_REGEXEC_HOOK(a, b, c, d) reh_call_exec_hook(aTHX_ (a), (b), (c), (d))
+EXTERN_C void reh_save_re_context(pTHX);
+EXTERN_C regnode *reh_regnext(pTHX_ register regnode *);
+#if XSH_HAS_PERL(5, 11, 0)
+EXTERN_C REGEXP *reh_pregcomp(pTHX_ SV * const, const U32);
+#else
+EXTERN_C REGEXP *reh_pregcomp(pTHX_ const SV * const, const U32);
+#endif
+#if XSH_HAS_PERL(5, 11, 2)
+EXTERN_C REGEXP *reh_reg_temp_copy(pTHX_ REGEXP *, REGEXP *);
+#else
+EXTERN_C REGEXP *reh_reg_temp_copy(pTHX_ REGEXP *);
+#endif
+#if XSH_HAS_PERL(5, 15, 7)
+EXTERN_C SV *reh__invlist_contents(pTHX_ SV* const);
+#endif
+
+EXTERN_C const struct regexp_engine reh_regexp_engine;
+
+EXTERN_C void reh_call_comp_begin_hook(pTHX_ regexp *);
+EXTERN_C void reh_call_comp_node_hook(pTHX_ regexp *, regnode *);
+EXTERN_C void reh_call_exec_node_hook(pTHX_ regexp *, regnode *, regmatch_info *, regmatch_state *);
+
+#define REH_CALL_COMP_BEGIN_HOOK(a) reh_call_comp_begin_hook(aTHX_ (a))
+#define REH_CALL_COMP_NODE_HOOK(a, b) reh_call_comp_node_hook(aTHX_ (a), (b))
+#define REH_CALL_EXEC_NODE_HOOK(a, b, c, d) reh_call_exec_node_hook(aTHX_ (a), (b), (c), (d))