[TUHS] Popular 1980 languages [Was: Comments on "C"]

[Nemo]

On 9 September 2016 at 17:15, Mary Ann Horton <mah at mhorton.net> wrote (in part):
> When I was at Berkeley working on my dissertation, I wrote a tool that would
> let you edit a text file written in any language you could define with a
> grammar, with syntax and semantic error checking while you edited.  I had
> grammars for several popular (in 1980) languages.

My curiosity is piqued.  What were these languages?

N.