[cbm-vic-20]

That, and "inoremap jk <Esc>".

[hoosieree]

Better is "inoremap fd <Esc>" especially if you ever try to type Dijkstra or the alphabet.

Of course now you have to call your file descriptor something else. No free lunches.

[I_complete_me]

For some unremembered reason I changed from that to set <esc>=jk. No idea why but it also works.