@revk@neil There was a bug in the original Unix vi, when recovering your changes after a crash: ZZ would fail to save your changes (gone forever), vs :wq would save them. I'm still typing :wq decades later. 😄
@bjnord@neil I was mocked for using vi. But then there was a short power cut at offices. I lost like last 10 characters I had typed or something because of recovery stuff. Others lost a lot of work.