Spark is a Modern dialect of Lisp currently being planned. This document is not a formal functional (much less technical) specification for it, but rather a briandump of some of the conclusions I (= Shlomi Fish) have reached about the fundamentals of its behaviour. Nevertheless, some preliminary (and still subject to change) specification of it will be given and some code examples will brought.
Beside contemporary Lisp dialects such as Common Lisp, Scheme and Arc, Spark draws a lot of inspiration from other modern languages, paradigms, and technologies including Perl 5, Perl 6, Python, Ruby, Java and Haskell.