All of the great discussion on this list about editors has made me curious about the data structures used in the various Unix editors.

I found a great discussion of this for sam in Rob Pike’s publication “The Text Editor sam.”

I’d like to read similar discussions of the data structures for ed, em, ex/vi. If anyone has suggestions of references, they would be very welcome!

Similarly, if there are any pointers to references on some other data structures in editors like TECO, QED and E, I’d welcome them as well.

All the best,

David C. Brock
Director and Curator
Software History Center
Computer History Museum
Twitter: @dcbrock
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