I think I've mentioned it a couple of times, but I'm also working on writing my own programming language, #Mifflin, to use instead of #Bash or #Python for shell scripting.
I've discovered that it's actually doing something relatively new, as it's statically-typed... all the others I've seen are dynamically-typed. No, TypeScript doesn't count. 😏
Immense fun, in any event. I hope to have something to release soon. Maybe a month?