There have been already been requests for a scripting language. I used to favour JavaScript, but I've changed my mind and give my vote for Lua. Many games use it and even Adobe uses it Lightroom. The next version of Reaper (a DAW) will support it too (switching from Python/Perl).

Free

"It may be used for any purpose, including commercial purposes, at absolutely no cost."

Portable

"Lua runs on all flavors of Unix and Windows, on mobile devices (running Android, iOS, BREW, Symbian, Windows Phone), on embedded microprocessors (such as ARM and Rabbit, for applications like Lego MindStorms), on IBM mainframes, etc. "

Embeddable

"It is also easy to extend programs written in other languages with Lua. Lua has been used to extend programs written not only in C and C++, but also in Java, C#, Smalltalk, Fortran, Ada, Erlang, and even in other scripting languages, such as Perl and Ruby. "

Fast

"Several benchmarks show Lua as the fastest language in the realm of interpreted scripting languages."

More infos:

http://www.lua.org/about.html
http://www.lua.org/license.html
https://en.wikipedia.org/wiki/Lua_%28pr ... anguage%29