a patch for require luaharfbuzz with luajit (LS)

source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/class_utils.c

@@ -13,13 +13,19 @@ int register_class(lua_State *L, const char *name, const luaL_Reg *methods, cons
       constants++;
     }
   }
-
+#ifdef LuajitTeX
+  luaL_register(L,NULL,methods);
+#else
   luaL_setfuncs(L, methods, 0);
+#endif
   lua_pop(L, 1);
 
   lua_newtable(L);
+#ifdef LuajitTeX
+  luaL_register(L,NULL,functions);
+#else
   luaL_setfuncs(L, functions, 0);
-
+#endif
   luaL_getmetatable(L, name);
   lua_setmetatable(L, -2);
   return 1;

source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/luaharfbuzz.c

@@ -97,7 +97,24 @@ int luaopen_luaharfbuzz (lua_State *L) {
   register_unicode(L);
   lua_setfield(L, -2, "unicode");
 
+#ifdef LuajitTeX
+  /* TODO: we usually dont use require, the module */
+  /* is already in global space  */
+  luaL_register(L,NULL, lib_table);
+  /**/
+  lua_pushvalue(L, -1);
+  lua_setglobal(L,"luaharfbuzz");
+  /**/
+  lua_getglobal(L, "package");
+  lua_getfield(L, -1, "loaded"); 
+  lua_remove(L, -2);
+  lua_pushvalue(L, -2);
+  lua_setfield(L, -2, "luaharfbuzz"); 
+  /**/
+#else
   luaL_setfuncs(L, lib_table, 0);
+#endif
+
 
   return 1;
 }