I remember reading about SNOBOL back in the day, but I never got exposed to a machine that had it.
The closest I ever got to text processing in the 1960s was TECO macros.
http://en.wikipedia.org/wiki/Text_Editor_and_CorrectorYou could do some amazing things with TECO macros. Eventually, somebody wrote a standard set of Editing MACroS that became known as EMACS.
After that, my interest in text editors waned. When I cut over to the VAX they had two editors. I went with the simpler one, whose name I forget. It was your basic WYSIWYG, with a few global replacement commands. It worked well with the VT100 terminal. The other editor, called VAXTPU was a "text processing utility", a true string oriented programming tool. VAXTPU is one of many things I put off learning until it was too late.
I've been going downhill with text editors for the last 25 years. Now, my speed is just about Notepad. About the only time I use a better editor is if there's one built into an IDE. Text editors that know the programming language and are opinionated about prettyprinting save me some work.
And, of course, there's always word processors.