tcsh was the obvious choice back then, it had the best completion and interactive features by a mile, in a way it was then what fish shell is today. That said,

tcsh was the obvious choice back then, it had the best completion and interactive features by a mile, in a way it was then what fish shell is today. That said, most people I know who still use tcsh do all their scripting in bash, again rather like fish, it just has too many gotchas. In fact, I got a production bug report about two months ago because one of our commands accepts a python-like format string as an argument, and the exclamation point they wanted to use inside it is interpreted by tcsh before interpreting the surrounding quotes. Purely a cshism, but still we got pinged for it.