> nvi - 1980 for 4BSD 4BSD (same as 3BSD) had the original vi (at version 3.1). You can see the sources at TUHS. Fun fact: AT&T adopted vi in System V UNIX,

> nvi - 1980 for 4BSD 4BSD (same as 3BSD) had the original vi (at version 3.1). You can see the sources at TUHS. Fun fact: AT&T adopted vi in System V UNIX, and advertised that fact without crediting UCB as required by the BSD license. So when AT&T sued, USB countersued, which is why AT&T settled for merely removing UNIX code from future releases.