Instead of readline one can also use libedit; the main difference being that libedit is BSD-licensed, while readline is GPL - not LGPL. That means you cannot r

Instead of readline one can also use libedit; the main difference being that libedit is BSD-licensed, while readline is GPL - not LGPL. That means you cannot really use readline with software that is Open Source, but not GPL-ed. LinuxCNC has (or used to have) this problem, for example.