luaL_addstring    154 lauxlib.h      LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);
luaL_addstring    170 lib_aux.c          luaL_addstring(&b, r);  /* push replacement in place of pattern */
luaL_addstring    173 lib_aux.c        luaL_addstring(&b, s);  /* push last suffix */