Re: dofile and ...

[Asko Kauppi <asko.kauppi@...>]

Thanks, Peter.

This has the great benefit that also the name of the script itself is  
included (as 'select(1,...)').  This allows scripts to know where they  
reside, and then to launch subscripts in the same dir.

I hope the Lua authors keep it that way..

-ak

4.9.2004 kello 18:20, Peter Shook kirjoitti:

 Good work guys, replacing arg with ... is a great idea.
> It makes code easier to read:
>
>    function printf(...) io.write(string.format(...)) end
>
> And being able to access the args passed to the function returned by  
> loadstring/loadfile is really great too.
>
>
> Here is a modified version of dofile for those who can't wait to play  
> with this feature:
>
> static int luaB_dofile (lua_State *L) {
>  const char *fname = luaL_optstring(L, 1, NULL);
>  int n = lua_gettop(L);
>  if (luaL_loadfile(L, fname) != 0) lua_error(L);
>  lua_insert(L, 1);
>  lua_call(L, n, LUA_MULTRET);
>  return lua_gettop(L);
> }
>
> $ cat x.lua
>
> print(...)
>
> $ bin/lua
> Lua 5.1 (work1)  Copyright (C) 1994-2004 Tecgraf, PUC-Rio
> > dofile('x.lua',1,2,3)
> x.lua   1       2       3
> >
>
> Cheers,
>
> - Peter
>
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