Re: [ANN] Lua 5.2.0 (work3) now available

[Enrico Colombini <erix@...>]

Luiz Henrique de Figueiredo wrote:
> - light C functions

Are these just optimized C functions with no stack frame (and no C 
closure) as I infer from the (work) 5.2 manual, or is there any other 
difference?

I'm asking because I found Mike Pall's old suggestion 
(http://lua-users.org/lists/lua-l/2006-09/msg01011.html):
"Add a kind of "light" C functions. This avoids building up a call frame 
for every function call. These functions are a bit more restricted (like 
no callbacks into Lua)"

But I see that lua_pushcfunction is just a macro for lua_pushcclosure:
  #define lua_pushcfunction(L,f)  lua_pushcclosure(L,f,0)

and lua_pushcclosure(L,f,0) creates a light C function, so I guess Lua 
callbacks from light C functions are allowed. Is this so?

  Enrico