Urn: A Lisp implementation for Lua Urn is a new language developed by SquidDev, and demhydraz. Urn is a Lisp dialect with a focus on minimalism which compiles to Lua. What? A minimal¹ Lisp implementation, with full support for compile time code execution and macros. Support for Lua 5.1, 5.2 and 5.3. Should also work with LuaJIT. Lisp-1 scoping rules (functions and data share the same namespace). I