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Yes it is, in the same way as:


function f1()
   return 1,2,3
end



function f2()
   return 4,5,6
end



print(f1(),f2())

1,4,5,6


Alexandre
-----Message d'origine----- From: Fredrik Widlund 
Sent: Wednesday, June 15, 2011 2:57 PM
To: Lua mailing list
Subject: pack/unpack

Hi,

Could someone explain if the following is by design:
Lua 5.1.4  Copyright (C) 1994-2008 Lua.org, PUC-Rio

a={1,2,3}
b={4,5,6}
c={unpack(a), unpack(b)}
print(table.concat(c, ","))

1,4,5,6
It seems the second unpack starts "writing" its members to position i+1 and thus overwrites the members of the first unpack? Is this really correct behaviour? 

Of course:

c={unpack(a)}
print(table.concat(c, ","))

1,2,3

Kind regards,
Fredrik Widlund