I've implemented substring and indexOf for strings, and push and pop for arrays. It's probably time to start using a new name, the language is drifting away from Lox fast enough that I don't want to cause confusion down the line (although I'm still expecting that I'm the only person who's going to use it).

Current candidates:

• "Jane" - no good reason, it's short, easy to type, probably bad for searching.
• "slut" - not entirely serious, husband was doing a bit and taking about my slutty language (because I'm prepared to make asthetic compromises to make parsing/writing easier). Will never be able to search for it.
• "lang" - nice and generic, doesn't tell the reader anything useful, impossible to search (but then everything that's not a random hex string won't be unique).

I think I'm favouring 'lang' right now, I'm the same way the project is called 'browser' (although that would make it 'language', which I'm also happy with).

It only makes a difference in a couple of places, things like the file extension, the name of the folder that holds the implementation, and maybe the docs.