$ cat borken.m #!/usr/bin/octave -qf pkg load control; pkg load signal; [a, b] = butter(4, 1/16); sos = tf2sos(a, b); sos $ octave borken.m error: '__lti_input_idx__' undefined near line 211, column 33 error: called from tf at line 211 column 31 tf2zp at line 35 column 13 tf2sos at line 67 column 11 borken at line 7 column 5
fixed with rebuild in task #323959