lua-dup

[Sokolov Yura <falcon@...>]

Am I wrong or there is no any way to make a copy of stack cell in the
official API?
May be it would be usefull to have a simple function:

lua_dup
         void lua_dup (lua_State *L, int index);

Pushes the element at the given position on the top without removal (
copies them).