I was looking for this and didn't realize it. I'm designing a fantasy console and wanted to include a modern-syntax, small, interpreted language that has many independent implementations - a new BASIC or Pascal. Lua comes close to this but attention is really centered around the PUC-Rio and LuaJIT implementations and not on being easily reimplemented, and every "classic" option one might think of(including Lisps and Forths) falls a bit outside today's mainstream.
I may be getting the book soon...