A saner design would have been to split that API up, e.g. “killgrp” to kill groups of processes by whatever identifier (current process group, foreign process g

A saner design would have been to split that API up, e.g. “killgrp” to kill groups of processes by whatever identifier (current process group, foreign process group, all processes, etc.). This way, your intent is encoded in the function you call, which is much harder to screw up.