[TUHS] Who came up with the spell check pipeline?

[Jonathan Gray via TUHS]

On Wed, Sep 03, 2025 at 10:39:52AM +0300, Diomidis Spinellis via TUHS wrote:
> In Brian Kernighan's amazing VCF talk that Arnold Robbins shared yesterday,
> bwk mentions that Steve N[uancen?] came up with the famous spell checking
> pipeline: cat | tr | sort | uniq | comm
> 
> https://www.youtube.com/watch?v=WEb_YL1K1Qg&t=1396s
> 
> Anybody knows the correct name of that person?  ChatGPT only hallucinates
> many wrong ones.

"The spell script originated with Steve Johnson."
>From page 149 of Brian's book, UNIX: A History and a Memoir.
An example script is on page 150.