6:40:11unixlispaeth: oh, this is the correct expression in maxima (($matrix) ((mlist) 1 2 3) ((mlist) 4 5 6) ((mlist) 7 8 9)) about [1 2 3; 4 5 6; 7 8 9] in octave.
6:53:43unixlispin maxima, some matrix operation such as triangularize also use make-array to optimise.
7:52:20unixlispppcre::nsubseq is a frequently used function made a displaced array. in sbcl, it makes a displaced array adjustable, in ccl not adjustable.