Re: printf and/or %n

[spir <denis.spir@...>]

On 06/11/2012 09:08, spir wrote:
> > Watch out for that old-fashioned Lua 5.0 'arg' - LuaJIT does not like
> > it!  Besides you will not be able to process any nils in the argument.
> > Lua 5.2's table.pack() does the right thing, otherwise use the trick
> > in my example.
>
> Thank you, again, Steve. I was aware there was some trap with arg, but did not
> remember what, or if it was important or not here. I'll have a look at "Lua
> 5.2's table.pack()". I guess you'd write maybe:
>     args = pack(...)
> to get a regular table from the tuple (or whatever internal representation the
> rest arg list has)? If yes (or close), i'll use that because it's clear for me,
> unlike the select(#, ...) syntax.

For people not aware of the latest lua-nnovations (like myself), I found good 
info on the topic (and much more) in:
* the Lua inofficial FAQ: http://www.luafaq.org/
* esp a note about unpack: http://www.luafaq.org/#T8.1.3
* and the new pack: http://www.luafaq.org/#T8.2.10

However, unlike what's mentionned there, and in the official list of 
incompatibilities between 5.1 & 5.2, and while I run Lua 5.2, unpack works by me 
without 'table' prefix (was not aware the func has moved in the 'table' table 
anyway):
   print(unpack{1,2,3}) --> 1	2	3

Denis