[runarberg]

Yes, it is a programming language. And so is HTML, LaTeX, heck even Markup is a programming language. The shapes of discs you put into your 1950s Elna Supermatic sewing machine that alters the stitch, also a programing language.

The only requirements is that it compiles into a set of instructions which computers (or sewing machines, etc.) know how to read and execute into a predictable (preferably desired) outcome.

A programming language does not need to be Turing complete to be a programming language.