vim

Noticed a bunch of little things running vi on Debian that, although both vi and vim point to /etc/alternatives/vim.tiny, made me suspect that there was somehow a difference.. vi was operating differently to vim (or should I say vim was operating differently to vi)

Turns out running 'vi' by default starts vim in 'vi compatability mode' which causes some things to be different (arrow keys in edit mode do entirely different things than expected :) )