[conspire] vi (was: Re: Technical Interview Performance by Editor/OS/Language - Triplebyte Blog)

[Michael Paoli]

> From: Texx <texxgadget at gmail.com>
> Subject: Re: [conspire] vi (was: Re: Technical Interview Performance  
> by Editor/OS/Language - Triplebyte Blog)
> Date: Sun, 10 Mar 2019 19:50:14 -0700

> The Berkeley enhancements (Visual, csh and a number of other things) were
> originally under /usr/ucb/bin

Yep.

> Michael is correct about vi being built on top of ex correctly.
> For years the dot file for vi was actually .exrc

Still is .exrc for classic vi and [n]vi.

> Im trying to remember whether this was Unix v6 or v7.

7th Edition, circa 1979 was the first Unix I used (I first used it
in 1980).

> I believe the code to Bills original vi was ALWAYS opensource as it was
> developed on the university machines,

Not quite.  The portions Bill Joy contributed, copyright University
of California --> BSD, etc.
However classic vi contains some ed source code, which was copyright
Bell Labs, etc.  So only after that was eventually finally open
sourced, did classic vi finally become fully open source - and that wasn't
all that horribly long ago (long after vim and [n]vi and many other
vi "clones").