Re: Acceptable indicies

[Sean Conner <sean@...>]

It was thus said that the Great Sean Conner once stated:
> It was thus said that the Great liam mail once stated:
> > 
> > luaL_optint(L,2,0) on a stack which has one entry would therefore be
> > an error and not a valid request using the function you posted
> > previously with the incorrect name 'mylua_isacceptable'
> 
>   The stack is always going to be at least 20 entries.

  One further test.  This time, going by what Lua 5.1.4 *does* and not by
what the documentation *says*.  

static int atest(lua_State *L)
{
  int v1;
  int v2;
  int v3;
 
  v1 = luaL_optint(L,1,-10);
  v2 = luaL_optint(L,2,-50);
  v3 = luaL_optint(L,300,-60);
  printf("VALUE: %d %d %d\n",v1,v2,v3);
  return 0;
}

  A stack index of 300 is way out of range and thus, what does luaL_optint()
return?  Well, let's run it:

[spc]lucy:~/source/lua/C>lua
Lua 5.1.4  Copyright (C) 1994-2008 Lua.org, PUC-Rio
> require "atest"
> atest()
VALUE: -10 -50 -60
> 

  Hmmm ... Roberto, can we expect this behavior, or is this a detail of the
implementaion?

  -spc