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The lineage of Vi
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| Colossal Typewriter | |
| by John McCarthy and Roland | |
| Silver for the PDP-1 | Photon typesetter | |
| ? | editors by Michael | |
| ? \ Barnett & Kalon | |
| Expensive Typewriter CREATE/EDIT \ Kelley for TECO | |
| for PDP-1 by Steve Piner for CTSS \ IBM 704 for PDP-1 | |
| / | / | \ \__ \ by Dan Murphy | |
| / | / | \ \ \ | | |
| * Expensive Typewriter editors EDITS | MEMO/MODIFY | | VEDIT | | |
| for PDP-1, improved for by Arthur | by Leslie | | by Victor | | |
| by Peter Deutsch PDP-4, Samuel | Lowry / | Yngve | | |
| | PDP-5/8 for CTSS \ for CTSS / _/ for PDP-6 | |
| | ? \_ \ | / _/ CTSS TECO by | |
| QED ? \_ \ | / / / Greenblatt, | |
| for Berkeley SDS-940 ? \ \ | | | / Holloway, | |
| by Deutsch and LINED TYPSET for CTSS and Nelson | |
| Butler Lampson for PDP-6 by Jerry Saltzer ? | | | |
| / \ | | | ? | | | |
| / \ | PDP-7/9 editor | ? DEC | | |
| QED, * QED | | ? TECO | | |
| as published for CTSS | ????????????????|??? | | |
| in CACM by Ken Thompson | ?? | ITS | |
| | | | ? ED (and EDL, EDA, EDB) TECO | |
| | | STOPGAP for CTSS / | | |
| | QED for PDP-10 | / / | |
| | for Multics by Bill Weiher | / | | |
| | by Ken Thompson | edit | | | |
| | / \ SOS for Multics | | | |
| | / \ for PDP-10 by Charles Garman | | | |
| | qedx QED by Steve | ___/ | | |
| | for Multics for GCOS Savitzky | / EMACS | |
| | by Dennis Ritchie ? edm / in TECO | |
| | | ? for Multics / by RMS et al. | |
| QUIDS | ? / / | | | |
| by George Coulouris * ed ? _____/ / | | | |
| et al. for PDP-7 Unix ? / / | | | |
| | by Ken Thompson ? | / | | | |
| | | ? ZED/DOC / Multics | | |
| | | ? by Vaughan / EMACS | | |
| | ed ? Pratt / by Bernard | | |
| | for Unix ? in TECO / Greenberg | | |
| | (various versions) ? | / | / | |
| | | ? | / \ / | |
| | | ? | / GNU Emacs | |
| \ ed ? / / | |
| \ for Unix v6 ? / / | |
| \ / | \ ? / / | |
| \ / other eds | ? / / | |
| em (UCLA?) | ? / / | |
| Unix ed with additions | | ? | / | |
| from George Coulouris \ | ? | / | |
| | | \__ | | ? | / | |
| | | \__ | | ? | / | |
| other | ex (v1) | / | |
| em | Unix ed with additions / / | |
| variants | by Bill Joy and Charles / / | |
| DED Haley / / | |
| by Richard Bornat, | / / | |
| Harold Thimbleby ex (v2) / / | |
| Unix ed with additions | |
| by Bill Joy | |
| | | |
| ex/vi (v3) | |
| extended by Mark Horton | |
| Source: http://web.mit.edu/kolya/misc/txt/editors |
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