Actually, upvalues were implemented a while ago.

diff --git a/src/bindings/lua/lua_state_cloner.c b/src/bindings/lua/lua_state_cloner.c
index 11e97f2..ce6d83c 100644 (file)
--- a/src/bindings/lua/lua_state_cloner.c
+++ b/src/bindings/lua/lua_state_cloner.c
@@ -421,7 +421,6 @@ static void sglua_copy_table(lua_State* src, lua_State* dst) {
  * @brief Copies the function on the top of src to the top of dst.
  *
  * It can be a Lua function or a C function.
  * @brief Copies the function on the top of src to the top of dst.
  *
  * It can be a Lua function or a C function.

- * Copying upvalues is not implemented yet.

  *
  * @param src source state
  * @param dst destination state
  *
  * @param src source state
  * @param dst destination state