Rails-RLisp
The Rails-RLisp plugin is a bridge from Rails to Tomasz Wegrzanowski's RLisp language. Using this plugin, any files with an .rl extension will be compiled as RLisp instead of Ruby. These files can be weaved into your Rails app where you would normally use Ruby files.
Rails-RLisp is available from svn://svn.madriska.com/plugins/rlisp.
The plugin hacks Rails's Dependencies mechanism to autoload .rl files where needed.
.rl files will be compiled into Ruby files of the same name, with an .rlc (Ruby Lisp Compiled) extension. Files will automatically be recompiled if the corresponding .rl file is changed.
Example
1. Install the plugin:
$ script/plugin install svn://svn.madriska.com/plugins/rlisp
2. Create a test file, app/models/lisp_test.rl:
(defclass LispTest)
(class LispTest
(method hello (name)
(print (+ "Hello, " [name to_s])))
(method fib (x)
(if (== x 0)
1
(* x [self fib (- x 1)]))))
3. Test the class loading:
$ script/console Loading development environment. >> LispTest.new.fib 12 => 479001600 >> LispTest.new.hello "world" Hello, world => nil