# cat abc.treetop
grammar A
    include X

    rule ma
        'a'
    end
end
#



# cat xyz.treetop
grammar X
    rule mx
        'x'
    end
end
#



# cat foo.rb
#!/usr/bin/env ruby

require 'rubygems'
require 'polyglot'
require 'treetop'

Treetop.load 'abc'
Treetop.load 'xyz'

a = AParser.new
x = XParser.new#