Zed! That's a blast from the distant past! I enjoyed this 1980 paper about its development: https://onlinelibrary.wiley.com/doi/abs/10.1002/spe.4380100107 https

Zed! That's a blast from the distant past! I enjoyed this 1980 paper about its development: https://onlinelibrary.wiley.com/doi/abs/10.1002/spe.4380100107 https://onlinelibrary.wiley.com/doi/abs/10.1002/spe.43801001... EDIT: I just saw in my own comment history that I knew (but forgot) there is a more recent Zed text editor which is probably the one you meant.