+START_EXTERN_C
+EXTERN_C const regexp_engine engine_plugin;
+#if XSH_HAS_PERL(5, 11, 0)
+EXTERN_C REGEXP * Plugin_comp(pTHX_ SV * const, U32);
+#else
+EXTERN_C REGEXP * Plugin_comp(pTHX_ const SV * const, const U32);
+#endif
+EXTERN_C I32 Plugin_exec(pTHX_ REGEXP * const, char *, char *,
+ char *, REP_ENG_EXEC_MINEND_TYPE, SV *, void *, U32);
+#if XSH_HAS_PERL(5, 19, 1)
+EXTERN_C char * Plugin_intuit(pTHX_ REGEXP * const, SV *, const char * const,
+ char *, char *, U32, re_scream_pos_data *);
+#else
+EXTERN_C char * Plugin_intuit(pTHX_ REGEXP * const, SV *, char *,
+ char *, U32, re_scream_pos_data *);
+#endif
+EXTERN_C SV * Plugin_checkstr(pTHX_ REGEXP * const);
+EXTERN_C void Plugin_free(pTHX_ REGEXP * const);
+EXTERN_C void * Plugin_dupe(pTHX_ REGEXP * const, CLONE_PARAMS *);
+EXTERN_C void Plugin_numbered_buff_FETCH(pTHX_ REGEXP * const,
+ const I32, SV * const);
+EXTERN_C void Plugin_numbered_buff_STORE(pTHX_ REGEXP * const,
+ const I32, SV const * const);
+EXTERN_C I32 Plugin_numbered_buff_LENGTH(pTHX_ REGEXP * const,
+ const SV * const, const I32);
+EXTERN_C SV * Plugin_named_buff(pTHX_ REGEXP * const, SV * const,
+ SV * const, const U32);
+EXTERN_C SV * Plugin_named_buff_iter(pTHX_ REGEXP * const, const SV * const,
+ const U32);
+EXTERN_C SV * Plugin_package(pTHX_ REGEXP * const);
+#ifdef USE_ITHREADS
+EXTERN_C void * Plugin_dupe(pTHX_ REGEXP * const, CLONE_PARAMS *);
+#endif