
mlr --from ./reg-test/input/xyz345 put 
    map a = {};

x=3,y=4,z=5

mlr --from ./reg-test/input/xyz345 put 
    map a = {};
    a[1]=2;
    a[3][4]=5;

x=3,y=4,z=5

mlr --from ./reg-test/input/xyz345 put 
    map a = {};
    a=2;
    a[3][4]=5;


mlr --from ./reg-test/input/xyz345 put 
    map a = {};
    a[3][4]=5;
    a=2;


