Eli Zaretskii writes: > Yes, but please add a comment there describing the reason. How much > more depth out of 40 is actually needed to allow cl-print calls, and > how much is safety margin? I determined by experiment that 77 needs to be added to max-lisp-eval-depth to permit the debugger to print ((1 (2 (3 (4 (5 (6 (7 (8))))))))). So I changed the increment to 100. But I really have no idea what is reasonable for a safety margin. Here's a new patch with comments.