I too remember TECO. In my TOPS-10 days I was quite a whiz at it.
Then I encountered UNIX and ed, and never looked back. Cryptic
programmability is fun, but a simple but well-chosen set of
commands including the g/v pair made me more efficient in the end.
it could just be that ed is a better fit for the shape of my brain.
C struck me similarly.
(Actually in the Bay Area for a few days for LISA, in case any
UNIXtorians want to meet up.)
Show replies by date