I spent the weekend obsessing over what the fastest
editor I could find
for a 4.77MHz 8088, DOS, CGA platform. The results, if anyone is
interested, are here:
http://www.oldskool.org/guides/texteditors
No doubt I will get some scorn for knocking Brief and other venerable
editors, but the truth is I have very specific needs: 1. Instant screen
response to user input, and 2. a functional undo. That's it, really,
and I was surprised how many text editors did not fit the bill.
One other factor you have forget, many small text editors could
only do 64K sized text files. Terse for example comes to mind.