vi Editor

I have not used vi for a very long time. The vi EMACS war is over and others have won. I was looking for a tiny editor which can be easy adapted and embed into a (Forth) system.

This vi has its origin from BusyBox tiny vi.

• The program is resident. The buffer too. You can leave the program without saving, do some work on the command line and go back to vi and continue the edit task.
• The buffer is restricted to 40 KiB. Large files have to be split up.
• Mecrisp Forth uses DOS/Windows style line endings carriage return and line feed ("\r\n"). Unix (and vi) uses just line feed ("\n").
• The command v evaluates a line.

Turbo Pascal IDE (Wordstar), EDT, vi, EMACS, IDE (Eclipse, NetBeans, EWARM)

BusyBox and ToyBox

• https://git.busybox.net/busybox/plain/editors/vi.c
• Toybox
• https://github.com/landley/toybox/blob/master/toys/pending/vi.c

Documentation, Manual

• Busybox vi tutorial https://k.japko.eu/busybox-vi-tutorial.html
• Learning the vi Editor/BusyBox vi https://en.wikibooks.org/wiki/Learning_the_vi_Editor/BusyBox_vi
• Unix/Linux - The vi Editor Tutorial https://www.tutorialspoint.com/unix/unix-vi-editor.htm
• vi Editor "Cheat Sheet" http://www.atmos.albany.edu/daes/atmclasses/atm350/vi_cheat_sheet.pdf

-- Peter Schmid - 2020-08-29

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