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2010/11/27 Drake Wilson <>:
> In other words, you want to accept up to 3 parameters and treat an
> explicit nil as though it were absent?
> An easy and clean way to do that would be to call lua_settop(L, 3)
> near the beginning, adjusting the entire stack (parameter list) to
> exactly 3 slots and filling any trailing unspecified slots with nil.

Ok, I see, so I should use lua_gettop and I should not assume that a
nil argument is the same of an omitted argument (seems reasonable).

The lua_isnoneornil to accees beyond the top of the stack seems awkward...

Thank you for the prompt answer !!