[GiNaC-list] list of list

[Jerome BENOIT]

Hello List,

I am rather a newbie in GiNaC and in C++
(but I am very familiar with another CAS and with C):

I have just noticed that:

lst list;
list = lst(lst(1,1),lst(2,4),lst(3,9));

gives a list of list as expected,
whereas

lst list;
list = lst(1,1),lst(2,4),lst(3,9);

gives the first list (namely lst(1,1))


is it a bug ? or is it a wrong thing to do ? 

Thanks in advance,
Jerome