Tree<String> gram = new CharParser(MetaGrammar.make()).parse(new FileInputStream(s[0])).expand1();
MetaGrammar g = (MetaGrammar)new MetaGrammar().walk(gram);
Union meta = g.done();
Tree<String> gram = new CharParser(MetaGrammar.make()).parse(new FileInputStream(s[0])).expand1();
MetaGrammar g = (MetaGrammar)new MetaGrammar().walk(gram);
Union meta = g.done();