Saving a matrix in a CSV doesn't discriminate line separators from column separators

Hi,

This exact same issue was raised in #2216 and apparently fixed, but it appears I still get the problem in 1.8.2 and I can't re-open an issue. Feel free to merge or anything if I did wrong.

Describe the bug Saving a matrix to a csv file using save returns a file where all values are separated by ,, despite the matrix containing several rows.

To Reproduce Run the following :

model mat2CSV

global
{
    matrix m <- matrix([[1,2,3],[2,3,4],[3,4,5]]);
    init {
        write m;
        save m to: "./m.csv" type:csv rewrite:true header:false;
    }
}
experiment test;

To obtain the following csv :

1,2,3,2,3,4,3,4,5

Expected behavior A CSV file with different separators for columns and lines, e.g. :

1,2,3;2,3,4;3,4,5

Specs:

OS: Manjaro Linux x86_64
GAMA version: 1.8.2

gama-platform / gama.old

Saving a matrix in a CSV doesn't discriminate line separators from column separators #3615