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 Early editor written in TECO

 Author:   Vaughan Pratt
 Homepage: http://boole.stanford.edu/pratt.html
 Manual:   http://boole.stanford.edu/zed.txt
 Source:   http://sites.google.com/site/texteditors/Home/files/zed.tec (TECO)
           http://sites.google.com/site/texteditors/Home/files/zed.ml (Mock-Lisp)
 History:  http://newsgroups.derkeiler.com/Archive/Comp/comp.emacs/2007-08/msg00082.html
 Family:   EarlyEditorFamily
 Platform: TECO
 License:  Open source

ZED was originally implemented in ITS TECO, and was considered an ancestor of Unix ex. It was originally called DOC, and later renamed to ZED. It used ITS TECO's Control-R mode, which permitted interactive usage. It was originally written to provide a more a more meaningful interface for a secretary who would be using TECO, based on work Professor Pratt was doing in natural language processing.

In the early 1980's Professor Pratt rewrote ZED in Mock-Lisp for Gosling Emacs, as ITS TECO and its associate Control-R mode was going away.

BillJoy commented in 1982 that had he known of ZED, he might have based VI's command structure on it, instead of creating his own.

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Last edited June 5, 2009 8:28 pm (diff)