I named it "block" because the structure it generates is literally called a Block in the ECMAScript spec https://www.ecma-international.org/ecma-262/5.1/#sec-12

I named it "block" because the structure it generates is literally called a Block in the ECMAScript spec https://www.ecma-international.org/ecma-262/5.1/#sec-12.1 https://www.ecma-international.org/ecma-262/5.1/#sec-12.1. I wanted to make the correspondence as familiar as possible to JS programmers. You're probably right I should have called function expressions fn. You can alias it with (macro fn lambda) though if you prefer that. First I hear of Lumen! What a coincidence that they started at the same time. It seems their language is an "overlay" entirely separate from both Lua and JS which only runs at compile-time, kind of like Lua is to Terra http://terralang.org/ http://terralang.org/. I think that means Lumen can't load macros from JavaScript modules at compile-time like eslisp can, but I'm not sure. I'll do some reading. Thanks for the link.